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1# SPDX-License-Identifier: GPL-2.0
2config MIPS
3 bool
4 default y
5 select ARCH_BINFMT_ELF_STATE
6 select ARCH_CLOCKSOURCE_DATA
7 select ARCH_DISCARD_MEMBLOCK
8 select ARCH_HAS_ELF_RANDOMIZE
9 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
10 select ARCH_SUPPORTS_UPROBES
11 select ARCH_USE_BUILTIN_BSWAP
12 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
13 select ARCH_USE_QUEUED_RWLOCKS
14 select ARCH_USE_QUEUED_SPINLOCKS
15 select ARCH_WANT_IPC_PARSE_VERSION
16 select BUILDTIME_EXTABLE_SORT
17 select CLONE_BACKWARDS
18 select CPU_PM if CPU_IDLE
19 select GENERIC_ATOMIC64 if !64BIT
20 select GENERIC_CLOCKEVENTS
21 select GENERIC_CMOS_UPDATE
22 select GENERIC_CPU_AUTOPROBE
23 select GENERIC_IRQ_PROBE
24 select GENERIC_IRQ_SHOW
25 select GENERIC_PCI_IOMAP
26 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
27 select GENERIC_SMP_IDLE_THREAD
28 select GENERIC_TIME_VSYSCALL
29 select HANDLE_DOMAIN_IRQ
30 select HAVE_ARCH_JUMP_LABEL
31 select HAVE_ARCH_KGDB
32 select HAVE_ARCH_MMAP_RND_BITS if MMU
33 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
34 select HAVE_ARCH_SECCOMP_FILTER
35 select HAVE_ARCH_TRACEHOOK
36 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
37 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
38 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
39 select HAVE_CC_STACKPROTECTOR
40 select HAVE_CONTEXT_TRACKING
41 select HAVE_COPY_THREAD_TLS
42 select HAVE_C_RECORDMCOUNT
43 select HAVE_DEBUG_KMEMLEAK
44 select HAVE_DEBUG_STACKOVERFLOW
45 select HAVE_DMA_API_DEBUG
46 select HAVE_DMA_CONTIGUOUS
47 select HAVE_DYNAMIC_FTRACE
48 select HAVE_EXIT_THREAD
49 select HAVE_FTRACE_MCOUNT_RECORD
50 select HAVE_FUNCTION_GRAPH_TRACER
51 select HAVE_FUNCTION_TRACER
52 select HAVE_GENERIC_DMA_COHERENT
53 select HAVE_IDE
54 select HAVE_IRQ_EXIT_ON_IRQ_STACK
55 select HAVE_IRQ_TIME_ACCOUNTING
56 select HAVE_KPROBES
57 select HAVE_KRETPROBES
58 select HAVE_MEMBLOCK
59 select HAVE_MEMBLOCK_NODE_MAP
60 select HAVE_MOD_ARCH_SPECIFIC
61 select HAVE_NMI
62 select HAVE_OPROFILE
63 select HAVE_PERF_EVENTS
64 select HAVE_REGS_AND_STACK_ACCESS_API
65 select HAVE_SYSCALL_TRACEPOINTS
66 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
67 select IRQ_FORCED_THREADING
68 select MODULES_USE_ELF_RELA if MODULES && 64BIT
69 select MODULES_USE_ELF_REL if MODULES
70 select PERF_USE_VMALLOC
71 select RTC_LIB if !MACH_LOONGSON64
72 select SYSCTL_EXCEPTION_TRACE
73 select VIRT_TO_BUS
74
75menu "Machine selection"
76
77choice
78 prompt "System type"
79 default MIPS_GENERIC
80
81config MIPS_GENERIC
82 bool "Generic board-agnostic MIPS kernel"
83 select BOOT_RAW
84 select BUILTIN_DTB
85 select CEVT_R4K
86 select CLKSRC_MIPS_GIC
87 select COMMON_CLK
88 select CPU_MIPSR2_IRQ_VI
89 select CPU_MIPSR2_IRQ_EI
90 select CSRC_R4K
91 select DMA_PERDEV_COHERENT
92 select HW_HAS_PCI
93 select IRQ_MIPS_CPU
94 select LIBFDT
95 select MIPS_CPU_SCACHE
96 select MIPS_GIC
97 select MIPS_L1_CACHE_SHIFT_7
98 select NO_EXCEPT_FILL
99 select PCI_DRIVERS_GENERIC
100 select PINCTRL
101 select SMP_UP if SMP
102 select SWAP_IO_SPACE
103 select SYS_HAS_CPU_MIPS32_R1
104 select SYS_HAS_CPU_MIPS32_R2
105 select SYS_HAS_CPU_MIPS32_R6
106 select SYS_HAS_CPU_MIPS64_R1
107 select SYS_HAS_CPU_MIPS64_R2
108 select SYS_HAS_CPU_MIPS64_R6
109 select SYS_SUPPORTS_32BIT_KERNEL
110 select SYS_SUPPORTS_64BIT_KERNEL
111 select SYS_SUPPORTS_BIG_ENDIAN
112 select SYS_SUPPORTS_HIGHMEM
113 select SYS_SUPPORTS_LITTLE_ENDIAN
114 select SYS_SUPPORTS_MICROMIPS
115 select SYS_SUPPORTS_MIPS_CPS
116 select SYS_SUPPORTS_MIPS16
117 select SYS_SUPPORTS_MULTITHREADING
118 select SYS_SUPPORTS_RELOCATABLE
119 select SYS_SUPPORTS_SMARTMIPS
120 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
121 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
122 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
123 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
124 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
125 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
126 select USE_OF
127 help
128 Select this to build a kernel which aims to support multiple boards,
129 generally using a flattened device tree passed from the bootloader
130 using the boot protocol defined in the UHI (Unified Hosting
131 Interface) specification.
132
133config MIPS_ALCHEMY
134 bool "Alchemy processor based machines"
135 select ARCH_PHYS_ADDR_T_64BIT
136 select CEVT_R4K
137 select CSRC_R4K
138 select IRQ_MIPS_CPU
139 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
140 select SYS_HAS_CPU_MIPS32_R1
141 select SYS_SUPPORTS_32BIT_KERNEL
142 select SYS_SUPPORTS_APM_EMULATION
143 select GPIOLIB
144 select SYS_SUPPORTS_ZBOOT
145 select COMMON_CLK
146
147config AR7
148 bool "Texas Instruments AR7"
149 select BOOT_ELF32
150 select DMA_NONCOHERENT
151 select CEVT_R4K
152 select CSRC_R4K
153 select IRQ_MIPS_CPU
154 select NO_EXCEPT_FILL
155 select SWAP_IO_SPACE
156 select SYS_HAS_CPU_MIPS32_R1
157 select SYS_HAS_EARLY_PRINTK
158 select SYS_SUPPORTS_32BIT_KERNEL
159 select SYS_SUPPORTS_LITTLE_ENDIAN
160 select SYS_SUPPORTS_MIPS16
161 select SYS_SUPPORTS_ZBOOT_UART16550
162 select GPIOLIB
163 select VLYNQ
164 select HAVE_CLK
165 help
166 Support for the Texas Instruments AR7 System-on-a-Chip
167 family: TNETD7100, 7200 and 7300.
168
169config ATH25
170 bool "Atheros AR231x/AR531x SoC support"
171 select CEVT_R4K
172 select CSRC_R4K
173 select DMA_NONCOHERENT
174 select IRQ_MIPS_CPU
175 select IRQ_DOMAIN
176 select SYS_HAS_CPU_MIPS32_R1
177 select SYS_SUPPORTS_BIG_ENDIAN
178 select SYS_SUPPORTS_32BIT_KERNEL
179 select SYS_HAS_EARLY_PRINTK
180 help
181 Support for Atheros AR231x and Atheros AR531x based boards
182
183config ATH79
184 bool "Atheros AR71XX/AR724X/AR913X based boards"
185 select ARCH_HAS_RESET_CONTROLLER
186 select BOOT_RAW
187 select CEVT_R4K
188 select CSRC_R4K
189 select DMA_NONCOHERENT
190 select GPIOLIB
191 select HAVE_CLK
192 select COMMON_CLK
193 select CLKDEV_LOOKUP
194 select IRQ_MIPS_CPU
195 select MIPS_MACHINE
196 select SYS_HAS_CPU_MIPS32_R2
197 select SYS_HAS_EARLY_PRINTK
198 select SYS_SUPPORTS_32BIT_KERNEL
199 select SYS_SUPPORTS_BIG_ENDIAN
200 select SYS_SUPPORTS_MIPS16
201 select SYS_SUPPORTS_ZBOOT_UART_PROM
202 select USE_OF
203 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
204 help
205 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
206
207config BMIPS_GENERIC
208 bool "Broadcom Generic BMIPS kernel"
209 select BOOT_RAW
210 select NO_EXCEPT_FILL
211 select USE_OF
212 select CEVT_R4K
213 select CSRC_R4K
214 select SYNC_R4K
215 select COMMON_CLK
216 select BCM6345_L1_IRQ
217 select BCM7038_L1_IRQ
218 select BCM7120_L2_IRQ
219 select BRCMSTB_L2_IRQ
220 select IRQ_MIPS_CPU
221 select DMA_NONCOHERENT
222 select SYS_SUPPORTS_32BIT_KERNEL
223 select SYS_SUPPORTS_LITTLE_ENDIAN
224 select SYS_SUPPORTS_BIG_ENDIAN
225 select SYS_SUPPORTS_HIGHMEM
226 select SYS_HAS_CPU_BMIPS32_3300
227 select SYS_HAS_CPU_BMIPS4350
228 select SYS_HAS_CPU_BMIPS4380
229 select SYS_HAS_CPU_BMIPS5000
230 select SWAP_IO_SPACE
231 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
232 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
233 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
234 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
235 select HARDIRQS_SW_RESEND
236 help
237 Build a generic DT-based kernel image that boots on select
238 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
239 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
240 must be set appropriately for your board.
241
242config BCM47XX
243 bool "Broadcom BCM47XX based boards"
244 select BOOT_RAW
245 select CEVT_R4K
246 select CSRC_R4K
247 select DMA_NONCOHERENT
248 select HW_HAS_PCI
249 select IRQ_MIPS_CPU
250 select SYS_HAS_CPU_MIPS32_R1
251 select NO_EXCEPT_FILL
252 select SYS_SUPPORTS_32BIT_KERNEL
253 select SYS_SUPPORTS_LITTLE_ENDIAN
254 select SYS_SUPPORTS_MIPS16
255 select SYS_SUPPORTS_ZBOOT
256 select SYS_HAS_EARLY_PRINTK
257 select USE_GENERIC_EARLY_PRINTK_8250
258 select GPIOLIB
259 select LEDS_GPIO_REGISTER
260 select BCM47XX_NVRAM
261 select BCM47XX_SPROM
262 select BCM47XX_SSB if !BCM47XX_BCMA
263 help
264 Support for BCM47XX based boards
265
266config BCM63XX
267 bool "Broadcom BCM63XX based boards"
268 select BOOT_RAW
269 select CEVT_R4K
270 select CSRC_R4K
271 select SYNC_R4K
272 select DMA_NONCOHERENT
273 select IRQ_MIPS_CPU
274 select SYS_SUPPORTS_32BIT_KERNEL
275 select SYS_SUPPORTS_BIG_ENDIAN
276 select SYS_HAS_EARLY_PRINTK
277 select SWAP_IO_SPACE
278 select GPIOLIB
279 select HAVE_CLK
280 select MIPS_L1_CACHE_SHIFT_4
281 select CLKDEV_LOOKUP
282 help
283 Support for BCM63XX based boards
284
285config MIPS_COBALT
286 bool "Cobalt Server"
287 select CEVT_R4K
288 select CSRC_R4K
289 select CEVT_GT641XX
290 select DMA_NONCOHERENT
291 select HW_HAS_PCI
292 select I8253
293 select I8259
294 select IRQ_MIPS_CPU
295 select IRQ_GT641XX
296 select PCI_GT64XXX_PCI0
297 select PCI
298 select SYS_HAS_CPU_NEVADA
299 select SYS_HAS_EARLY_PRINTK
300 select SYS_SUPPORTS_32BIT_KERNEL
301 select SYS_SUPPORTS_64BIT_KERNEL
302 select SYS_SUPPORTS_LITTLE_ENDIAN
303 select USE_GENERIC_EARLY_PRINTK_8250
304
305config MACH_DECSTATION
306 bool "DECstations"
307 select BOOT_ELF32
308 select CEVT_DS1287
309 select CEVT_R4K if CPU_R4X00
310 select CSRC_IOASIC
311 select CSRC_R4K if CPU_R4X00
312 select CPU_DADDI_WORKAROUNDS if 64BIT
313 select CPU_R4000_WORKAROUNDS if 64BIT
314 select CPU_R4400_WORKAROUNDS if 64BIT
315 select DMA_NONCOHERENT
316 select NO_IOPORT_MAP
317 select IRQ_MIPS_CPU
318 select SYS_HAS_CPU_R3000
319 select SYS_HAS_CPU_R4X00
320 select SYS_SUPPORTS_32BIT_KERNEL
321 select SYS_SUPPORTS_64BIT_KERNEL
322 select SYS_SUPPORTS_LITTLE_ENDIAN
323 select SYS_SUPPORTS_128HZ
324 select SYS_SUPPORTS_256HZ
325 select SYS_SUPPORTS_1024HZ
326 select MIPS_L1_CACHE_SHIFT_4
327 help
328 This enables support for DEC's MIPS based workstations. For details
329 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
330 DECstation porting pages on <http://decstation.unix-ag.org/>.
331
332 If you have one of the following DECstation Models you definitely
333 want to choose R4xx0 for the CPU Type:
334
335 DECstation 5000/50
336 DECstation 5000/150
337 DECstation 5000/260
338 DECsystem 5900/260
339
340 otherwise choose R3000.
341
342config MACH_JAZZ
343 bool "Jazz family of machines"
344 select ARCH_MIGHT_HAVE_PC_PARPORT
345 select ARCH_MIGHT_HAVE_PC_SERIO
346 select FW_ARC
347 select FW_ARC32
348 select ARCH_MAY_HAVE_PC_FDC
349 select CEVT_R4K
350 select CSRC_R4K
351 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
352 select GENERIC_ISA_DMA
353 select HAVE_PCSPKR_PLATFORM
354 select IRQ_MIPS_CPU
355 select I8253
356 select I8259
357 select ISA
358 select SYS_HAS_CPU_R4X00
359 select SYS_SUPPORTS_32BIT_KERNEL
360 select SYS_SUPPORTS_64BIT_KERNEL
361 select SYS_SUPPORTS_100HZ
362 help
363 This a family of machines based on the MIPS R4030 chipset which was
364 used by several vendors to build RISC/os and Windows NT workstations.
365 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
366 Olivetti M700-10 workstations.
367
368config MACH_INGENIC
369 bool "Ingenic SoC based machines"
370 select SYS_SUPPORTS_32BIT_KERNEL
371 select SYS_SUPPORTS_LITTLE_ENDIAN
372 select SYS_SUPPORTS_ZBOOT_UART16550
373 select DMA_NONCOHERENT
374 select IRQ_MIPS_CPU
375 select PINCTRL
376 select GPIOLIB
377 select COMMON_CLK
378 select GENERIC_IRQ_CHIP
379 select BUILTIN_DTB
380 select USE_OF
381 select LIBFDT
382
383config LANTIQ
384 bool "Lantiq based platforms"
385 select DMA_NONCOHERENT
386 select IRQ_MIPS_CPU
387 select CEVT_R4K
388 select CSRC_R4K
389 select SYS_HAS_CPU_MIPS32_R1
390 select SYS_HAS_CPU_MIPS32_R2
391 select SYS_SUPPORTS_BIG_ENDIAN
392 select SYS_SUPPORTS_32BIT_KERNEL
393 select SYS_SUPPORTS_MIPS16
394 select SYS_SUPPORTS_MULTITHREADING
395 select SYS_SUPPORTS_VPE_LOADER
396 select SYS_HAS_EARLY_PRINTK
397 select GPIOLIB
398 select SWAP_IO_SPACE
399 select BOOT_RAW
400 select CLKDEV_LOOKUP
401 select USE_OF
402 select PINCTRL
403 select PINCTRL_LANTIQ
404 select ARCH_HAS_RESET_CONTROLLER
405 select RESET_CONTROLLER
406
407config LASAT
408 bool "LASAT Networks platforms"
409 select CEVT_R4K
410 select CRC32
411 select CSRC_R4K
412 select DMA_NONCOHERENT
413 select SYS_HAS_EARLY_PRINTK
414 select HW_HAS_PCI
415 select IRQ_MIPS_CPU
416 select PCI_GT64XXX_PCI0
417 select MIPS_NILE4
418 select R5000_CPU_SCACHE
419 select SYS_HAS_CPU_R5000
420 select SYS_SUPPORTS_32BIT_KERNEL
421 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
422 select SYS_SUPPORTS_LITTLE_ENDIAN
423
424config MACH_LOONGSON32
425 bool "Loongson-1 family of machines"
426 select SYS_SUPPORTS_ZBOOT
427 help
428 This enables support for the Loongson-1 family of machines.
429
430 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
431 the Institute of Computing Technology (ICT), Chinese Academy of
432 Sciences (CAS).
433
434config MACH_LOONGSON64
435 bool "Loongson-2/3 family of machines"
436 select ARCH_HAS_PHYS_TO_DMA
437 select SYS_SUPPORTS_ZBOOT
438 help
439 This enables the support of Loongson-2/3 family of machines.
440
441 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
442 family of multi-core CPUs. They are both 64-bit general-purpose
443 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
444 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
445 in the People's Republic of China. The chief architect is Professor
446 Weiwu Hu.
447
448config MACH_PISTACHIO
449 bool "IMG Pistachio SoC based boards"
450 select BOOT_ELF32
451 select BOOT_RAW
452 select CEVT_R4K
453 select CLKSRC_MIPS_GIC
454 select COMMON_CLK
455 select CSRC_R4K
456 select DMA_NONCOHERENT
457 select GPIOLIB
458 select IRQ_MIPS_CPU
459 select LIBFDT
460 select MFD_SYSCON
461 select MIPS_CPU_SCACHE
462 select MIPS_GIC
463 select PINCTRL
464 select REGULATOR
465 select SYS_HAS_CPU_MIPS32_R2
466 select SYS_SUPPORTS_32BIT_KERNEL
467 select SYS_SUPPORTS_LITTLE_ENDIAN
468 select SYS_SUPPORTS_MIPS_CPS
469 select SYS_SUPPORTS_MULTITHREADING
470 select SYS_SUPPORTS_RELOCATABLE
471 select SYS_SUPPORTS_ZBOOT
472 select SYS_HAS_EARLY_PRINTK
473 select USE_GENERIC_EARLY_PRINTK_8250
474 select USE_OF
475 help
476 This enables support for the IMG Pistachio SoC platform.
477
478config MIPS_MALTA
479 bool "MIPS Malta board"
480 select ARCH_MAY_HAVE_PC_FDC
481 select ARCH_MIGHT_HAVE_PC_PARPORT
482 select ARCH_MIGHT_HAVE_PC_SERIO
483 select BOOT_ELF32
484 select BOOT_RAW
485 select BUILTIN_DTB
486 select CEVT_R4K
487 select CSRC_R4K
488 select CLKSRC_MIPS_GIC
489 select COMMON_CLK
490 select DMA_MAYBE_COHERENT
491 select GENERIC_ISA_DMA
492 select HAVE_PCSPKR_PLATFORM
493 select IRQ_MIPS_CPU
494 select MIPS_GIC
495 select HW_HAS_PCI
496 select I8253
497 select I8259
498 select MIPS_BONITO64
499 select MIPS_CPU_SCACHE
500 select MIPS_L1_CACHE_SHIFT_6
501 select PCI_GT64XXX_PCI0
502 select MIPS_MSC
503 select SMP_UP if SMP
504 select SWAP_IO_SPACE
505 select SYS_HAS_CPU_MIPS32_R1
506 select SYS_HAS_CPU_MIPS32_R2
507 select SYS_HAS_CPU_MIPS32_R3_5
508 select SYS_HAS_CPU_MIPS32_R5
509 select SYS_HAS_CPU_MIPS32_R6
510 select SYS_HAS_CPU_MIPS64_R1
511 select SYS_HAS_CPU_MIPS64_R2
512 select SYS_HAS_CPU_MIPS64_R6
513 select SYS_HAS_CPU_NEVADA
514 select SYS_HAS_CPU_RM7000
515 select SYS_SUPPORTS_32BIT_KERNEL
516 select SYS_SUPPORTS_64BIT_KERNEL
517 select SYS_SUPPORTS_BIG_ENDIAN
518 select SYS_SUPPORTS_HIGHMEM
519 select SYS_SUPPORTS_LITTLE_ENDIAN
520 select SYS_SUPPORTS_MICROMIPS
521 select SYS_SUPPORTS_MIPS_CMP
522 select SYS_SUPPORTS_MIPS_CPS
523 select SYS_SUPPORTS_MIPS16
524 select SYS_SUPPORTS_MULTITHREADING
525 select SYS_SUPPORTS_SMARTMIPS
526 select SYS_SUPPORTS_VPE_LOADER
527 select SYS_SUPPORTS_ZBOOT
528 select SYS_SUPPORTS_RELOCATABLE
529 select USE_OF
530 select LIBFDT
531 select ZONE_DMA32 if 64BIT
532 select BUILTIN_DTB
533 select LIBFDT
534 help
535 This enables support for the MIPS Technologies Malta evaluation
536 board.
537
538config MACH_PIC32
539 bool "Microchip PIC32 Family"
540 help
541 This enables support for the Microchip PIC32 family of platforms.
542
543 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
544 microcontrollers.
545
546config NEC_MARKEINS
547 bool "NEC EMMA2RH Mark-eins board"
548 select SOC_EMMA2RH
549 select HW_HAS_PCI
550 help
551 This enables support for the NEC Electronics Mark-eins boards.
552
553config MACH_VR41XX
554 bool "NEC VR4100 series based machines"
555 select CEVT_R4K
556 select CSRC_R4K
557 select SYS_HAS_CPU_VR41XX
558 select SYS_SUPPORTS_MIPS16
559 select GPIOLIB
560
561config NXP_STB220
562 bool "NXP STB220 board"
563 select SOC_PNX833X
564 help
565 Support for NXP Semiconductors STB220 Development Board.
566
567config NXP_STB225
568 bool "NXP 225 board"
569 select SOC_PNX833X
570 select SOC_PNX8335
571 help
572 Support for NXP Semiconductors STB225 Development Board.
573
574config PMC_MSP
575 bool "PMC-Sierra MSP chipsets"
576 select CEVT_R4K
577 select CSRC_R4K
578 select DMA_NONCOHERENT
579 select SWAP_IO_SPACE
580 select NO_EXCEPT_FILL
581 select BOOT_RAW
582 select SYS_HAS_CPU_MIPS32_R1
583 select SYS_HAS_CPU_MIPS32_R2
584 select SYS_SUPPORTS_32BIT_KERNEL
585 select SYS_SUPPORTS_BIG_ENDIAN
586 select SYS_SUPPORTS_MIPS16
587 select IRQ_MIPS_CPU
588 select SERIAL_8250
589 select SERIAL_8250_CONSOLE
590 select USB_EHCI_BIG_ENDIAN_MMIO
591 select USB_EHCI_BIG_ENDIAN_DESC
592 help
593 This adds support for the PMC-Sierra family of Multi-Service
594 Processor System-On-A-Chips. These parts include a number
595 of integrated peripherals, interfaces and DSPs in addition to
596 a variety of MIPS cores.
597
598config RALINK
599 bool "Ralink based machines"
600 select CEVT_R4K
601 select CSRC_R4K
602 select BOOT_RAW
603 select DMA_NONCOHERENT
604 select IRQ_MIPS_CPU
605 select USE_OF
606 select SYS_HAS_CPU_MIPS32_R1
607 select SYS_HAS_CPU_MIPS32_R2
608 select SYS_SUPPORTS_32BIT_KERNEL
609 select SYS_SUPPORTS_LITTLE_ENDIAN
610 select SYS_SUPPORTS_MIPS16
611 select SYS_HAS_EARLY_PRINTK
612 select CLKDEV_LOOKUP
613 select ARCH_HAS_RESET_CONTROLLER
614 select RESET_CONTROLLER
615
616config SGI_IP22
617 bool "SGI IP22 (Indy/Indigo2)"
618 select FW_ARC
619 select FW_ARC32
620 select ARCH_MIGHT_HAVE_PC_SERIO
621 select BOOT_ELF32
622 select CEVT_R4K
623 select CSRC_R4K
624 select DEFAULT_SGI_PARTITION
625 select DMA_NONCOHERENT
626 select HW_HAS_EISA
627 select I8253
628 select I8259
629 select IP22_CPU_SCACHE
630 select IRQ_MIPS_CPU
631 select GENERIC_ISA_DMA_SUPPORT_BROKEN
632 select SGI_HAS_I8042
633 select SGI_HAS_INDYDOG
634 select SGI_HAS_HAL2
635 select SGI_HAS_SEEQ
636 select SGI_HAS_WD93
637 select SGI_HAS_ZILOG
638 select SWAP_IO_SPACE
639 select SYS_HAS_CPU_R4X00
640 select SYS_HAS_CPU_R5000
641 #
642 # Disable EARLY_PRINTK for now since it leads to overwritten prom
643 # memory during early boot on some machines.
644 #
645 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
646 # for a more details discussion
647 #
648 # select SYS_HAS_EARLY_PRINTK
649 select SYS_SUPPORTS_32BIT_KERNEL
650 select SYS_SUPPORTS_64BIT_KERNEL
651 select SYS_SUPPORTS_BIG_ENDIAN
652 select MIPS_L1_CACHE_SHIFT_7
653 help
654 This are the SGI Indy, Challenge S and Indigo2, as well as certain
655 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
656 that runs on these, say Y here.
657
658config SGI_IP27
659 bool "SGI IP27 (Origin200/2000)"
660 select FW_ARC
661 select FW_ARC64
662 select BOOT_ELF64
663 select DEFAULT_SGI_PARTITION
664 select DMA_COHERENT
665 select SYS_HAS_EARLY_PRINTK
666 select HW_HAS_PCI
667 select NR_CPUS_DEFAULT_64
668 select SYS_HAS_CPU_R10000
669 select SYS_SUPPORTS_64BIT_KERNEL
670 select SYS_SUPPORTS_BIG_ENDIAN
671 select SYS_SUPPORTS_NUMA
672 select SYS_SUPPORTS_SMP
673 select MIPS_L1_CACHE_SHIFT_7
674 help
675 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
676 workstations. To compile a Linux kernel that runs on these, say Y
677 here.
678
679config SGI_IP28
680 bool "SGI IP28 (Indigo2 R10k)"
681 select FW_ARC
682 select FW_ARC64
683 select ARCH_MIGHT_HAVE_PC_SERIO
684 select BOOT_ELF64
685 select CEVT_R4K
686 select CSRC_R4K
687 select DEFAULT_SGI_PARTITION
688 select DMA_NONCOHERENT
689 select GENERIC_ISA_DMA_SUPPORT_BROKEN
690 select IRQ_MIPS_CPU
691 select HW_HAS_EISA
692 select I8253
693 select I8259
694 select SGI_HAS_I8042
695 select SGI_HAS_INDYDOG
696 select SGI_HAS_HAL2
697 select SGI_HAS_SEEQ
698 select SGI_HAS_WD93
699 select SGI_HAS_ZILOG
700 select SWAP_IO_SPACE
701 select SYS_HAS_CPU_R10000
702 #
703 # Disable EARLY_PRINTK for now since it leads to overwritten prom
704 # memory during early boot on some machines.
705 #
706 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
707 # for a more details discussion
708 #
709 # select SYS_HAS_EARLY_PRINTK
710 select SYS_SUPPORTS_64BIT_KERNEL
711 select SYS_SUPPORTS_BIG_ENDIAN
712 select MIPS_L1_CACHE_SHIFT_7
713 help
714 This is the SGI Indigo2 with R10000 processor. To compile a Linux
715 kernel that runs on these, say Y here.
716
717config SGI_IP32
718 bool "SGI IP32 (O2)"
719 select FW_ARC
720 select FW_ARC32
721 select BOOT_ELF32
722 select CEVT_R4K
723 select CSRC_R4K
724 select DMA_NONCOHERENT
725 select HW_HAS_PCI
726 select IRQ_MIPS_CPU
727 select R5000_CPU_SCACHE
728 select RM7000_CPU_SCACHE
729 select SYS_HAS_CPU_R5000
730 select SYS_HAS_CPU_R10000 if BROKEN
731 select SYS_HAS_CPU_RM7000
732 select SYS_HAS_CPU_NEVADA
733 select SYS_SUPPORTS_64BIT_KERNEL
734 select SYS_SUPPORTS_BIG_ENDIAN
735 help
736 If you want this kernel to run on SGI O2 workstation, say Y here.
737
738config SIBYTE_CRHINE
739 bool "Sibyte BCM91120C-CRhine"
740 select BOOT_ELF32
741 select DMA_COHERENT
742 select SIBYTE_BCM1120
743 select SWAP_IO_SPACE
744 select SYS_HAS_CPU_SB1
745 select SYS_SUPPORTS_BIG_ENDIAN
746 select SYS_SUPPORTS_LITTLE_ENDIAN
747
748config SIBYTE_CARMEL
749 bool "Sibyte BCM91120x-Carmel"
750 select BOOT_ELF32
751 select DMA_COHERENT
752 select SIBYTE_BCM1120
753 select SWAP_IO_SPACE
754 select SYS_HAS_CPU_SB1
755 select SYS_SUPPORTS_BIG_ENDIAN
756 select SYS_SUPPORTS_LITTLE_ENDIAN
757
758config SIBYTE_CRHONE
759 bool "Sibyte BCM91125C-CRhone"
760 select BOOT_ELF32
761 select DMA_COHERENT
762 select SIBYTE_BCM1125
763 select SWAP_IO_SPACE
764 select SYS_HAS_CPU_SB1
765 select SYS_SUPPORTS_BIG_ENDIAN
766 select SYS_SUPPORTS_HIGHMEM
767 select SYS_SUPPORTS_LITTLE_ENDIAN
768
769config SIBYTE_RHONE
770 bool "Sibyte BCM91125E-Rhone"
771 select BOOT_ELF32
772 select DMA_COHERENT
773 select SIBYTE_BCM1125H
774 select SWAP_IO_SPACE
775 select SYS_HAS_CPU_SB1
776 select SYS_SUPPORTS_BIG_ENDIAN
777 select SYS_SUPPORTS_LITTLE_ENDIAN
778
779config SIBYTE_SWARM
780 bool "Sibyte BCM91250A-SWARM"
781 select BOOT_ELF32
782 select DMA_COHERENT
783 select HAVE_PATA_PLATFORM
784 select SIBYTE_SB1250
785 select SWAP_IO_SPACE
786 select SYS_HAS_CPU_SB1
787 select SYS_SUPPORTS_BIG_ENDIAN
788 select SYS_SUPPORTS_HIGHMEM
789 select SYS_SUPPORTS_LITTLE_ENDIAN
790 select ZONE_DMA32 if 64BIT
791
792config SIBYTE_LITTLESUR
793 bool "Sibyte BCM91250C2-LittleSur"
794 select BOOT_ELF32
795 select DMA_COHERENT
796 select HAVE_PATA_PLATFORM
797 select SIBYTE_SB1250
798 select SWAP_IO_SPACE
799 select SYS_HAS_CPU_SB1
800 select SYS_SUPPORTS_BIG_ENDIAN
801 select SYS_SUPPORTS_HIGHMEM
802 select SYS_SUPPORTS_LITTLE_ENDIAN
803
804config SIBYTE_SENTOSA
805 bool "Sibyte BCM91250E-Sentosa"
806 select BOOT_ELF32
807 select DMA_COHERENT
808 select SIBYTE_SB1250
809 select SWAP_IO_SPACE
810 select SYS_HAS_CPU_SB1
811 select SYS_SUPPORTS_BIG_ENDIAN
812 select SYS_SUPPORTS_LITTLE_ENDIAN
813
814config SIBYTE_BIGSUR
815 bool "Sibyte BCM91480B-BigSur"
816 select BOOT_ELF32
817 select DMA_COHERENT
818 select NR_CPUS_DEFAULT_4
819 select SIBYTE_BCM1x80
820 select SWAP_IO_SPACE
821 select SYS_HAS_CPU_SB1
822 select SYS_SUPPORTS_BIG_ENDIAN
823 select SYS_SUPPORTS_HIGHMEM
824 select SYS_SUPPORTS_LITTLE_ENDIAN
825 select ZONE_DMA32 if 64BIT
826
827config SNI_RM
828 bool "SNI RM200/300/400"
829 select FW_ARC if CPU_LITTLE_ENDIAN
830 select FW_ARC32 if CPU_LITTLE_ENDIAN
831 select FW_SNIPROM if CPU_BIG_ENDIAN
832 select ARCH_MAY_HAVE_PC_FDC
833 select ARCH_MIGHT_HAVE_PC_PARPORT
834 select ARCH_MIGHT_HAVE_PC_SERIO
835 select BOOT_ELF32
836 select CEVT_R4K
837 select CSRC_R4K
838 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
839 select DMA_NONCOHERENT
840 select GENERIC_ISA_DMA
841 select HAVE_PCSPKR_PLATFORM
842 select HW_HAS_EISA
843 select HW_HAS_PCI
844 select IRQ_MIPS_CPU
845 select I8253
846 select I8259
847 select ISA
848 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
849 select SYS_HAS_CPU_R4X00
850 select SYS_HAS_CPU_R5000
851 select SYS_HAS_CPU_R10000
852 select R5000_CPU_SCACHE
853 select SYS_HAS_EARLY_PRINTK
854 select SYS_SUPPORTS_32BIT_KERNEL
855 select SYS_SUPPORTS_64BIT_KERNEL
856 select SYS_SUPPORTS_BIG_ENDIAN
857 select SYS_SUPPORTS_HIGHMEM
858 select SYS_SUPPORTS_LITTLE_ENDIAN
859 help
860 The SNI RM200/300/400 are MIPS-based machines manufactured by
861 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
862 Technology and now in turn merged with Fujitsu. Say Y here to
863 support this machine type.
864
865config MACH_TX39XX
866 bool "Toshiba TX39 series based machines"
867
868config MACH_TX49XX
869 bool "Toshiba TX49 series based machines"
870
871config MIKROTIK_RB532
872 bool "Mikrotik RB532 boards"
873 select CEVT_R4K
874 select CSRC_R4K
875 select DMA_NONCOHERENT
876 select HW_HAS_PCI
877 select IRQ_MIPS_CPU
878 select SYS_HAS_CPU_MIPS32_R1
879 select SYS_SUPPORTS_32BIT_KERNEL
880 select SYS_SUPPORTS_LITTLE_ENDIAN
881 select SWAP_IO_SPACE
882 select BOOT_RAW
883 select GPIOLIB
884 select MIPS_L1_CACHE_SHIFT_4
885 help
886 Support the Mikrotik(tm) RouterBoard 532 series,
887 based on the IDT RC32434 SoC.
888
889config CAVIUM_OCTEON_SOC
890 bool "Cavium Networks Octeon SoC based boards"
891 select CEVT_R4K
892 select ARCH_HAS_PHYS_TO_DMA
893 select ARCH_PHYS_ADDR_T_64BIT
894 select DMA_COHERENT
895 select SYS_SUPPORTS_64BIT_KERNEL
896 select SYS_SUPPORTS_BIG_ENDIAN
897 select EDAC_SUPPORT
898 select EDAC_ATOMIC_SCRUB
899 select SYS_SUPPORTS_LITTLE_ENDIAN
900 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
901 select SYS_HAS_EARLY_PRINTK
902 select SYS_HAS_CPU_CAVIUM_OCTEON
903 select HW_HAS_PCI
904 select ZONE_DMA32
905 select HOLES_IN_ZONE
906 select GPIOLIB
907 select LIBFDT
908 select USE_OF
909 select ARCH_SPARSEMEM_ENABLE
910 select SYS_SUPPORTS_SMP
911 select NR_CPUS_DEFAULT_64
912 select MIPS_NR_CPU_NR_MAP_1024
913 select BUILTIN_DTB
914 select MTD_COMPLEX_MAPPINGS
915 select SYS_SUPPORTS_RELOCATABLE
916 help
917 This option supports all of the Octeon reference boards from Cavium
918 Networks. It builds a kernel that dynamically determines the Octeon
919 CPU type and supports all known board reference implementations.
920 Some of the supported boards are:
921 EBT3000
922 EBH3000
923 EBH3100
924 Thunder
925 Kodama
926 Hikari
927 Say Y here for most Octeon reference boards.
928
929config NLM_XLR_BOARD
930 bool "Netlogic XLR/XLS based systems"
931 select BOOT_ELF32
932 select NLM_COMMON
933 select SYS_HAS_CPU_XLR
934 select SYS_SUPPORTS_SMP
935 select HW_HAS_PCI
936 select SWAP_IO_SPACE
937 select SYS_SUPPORTS_32BIT_KERNEL
938 select SYS_SUPPORTS_64BIT_KERNEL
939 select ARCH_PHYS_ADDR_T_64BIT
940 select SYS_SUPPORTS_BIG_ENDIAN
941 select SYS_SUPPORTS_HIGHMEM
942 select DMA_COHERENT
943 select NR_CPUS_DEFAULT_32
944 select CEVT_R4K
945 select CSRC_R4K
946 select IRQ_MIPS_CPU
947 select ZONE_DMA32 if 64BIT
948 select SYNC_R4K
949 select SYS_HAS_EARLY_PRINTK
950 select SYS_SUPPORTS_ZBOOT
951 select SYS_SUPPORTS_ZBOOT_UART16550
952 help
953 Support for systems based on Netlogic XLR and XLS processors.
954 Say Y here if you have a XLR or XLS based board.
955
956config NLM_XLP_BOARD
957 bool "Netlogic XLP based systems"
958 select BOOT_ELF32
959 select NLM_COMMON
960 select SYS_HAS_CPU_XLP
961 select SYS_SUPPORTS_SMP
962 select HW_HAS_PCI
963 select SYS_SUPPORTS_32BIT_KERNEL
964 select SYS_SUPPORTS_64BIT_KERNEL
965 select ARCH_PHYS_ADDR_T_64BIT
966 select GPIOLIB
967 select SYS_SUPPORTS_BIG_ENDIAN
968 select SYS_SUPPORTS_LITTLE_ENDIAN
969 select SYS_SUPPORTS_HIGHMEM
970 select DMA_COHERENT
971 select NR_CPUS_DEFAULT_32
972 select CEVT_R4K
973 select CSRC_R4K
974 select IRQ_MIPS_CPU
975 select ZONE_DMA32 if 64BIT
976 select SYNC_R4K
977 select SYS_HAS_EARLY_PRINTK
978 select USE_OF
979 select SYS_SUPPORTS_ZBOOT
980 select SYS_SUPPORTS_ZBOOT_UART16550
981 help
982 This board is based on Netlogic XLP Processor.
983 Say Y here if you have a XLP based board.
984
985config MIPS_PARAVIRT
986 bool "Para-Virtualized guest system"
987 select CEVT_R4K
988 select CSRC_R4K
989 select DMA_COHERENT
990 select SYS_SUPPORTS_64BIT_KERNEL
991 select SYS_SUPPORTS_32BIT_KERNEL
992 select SYS_SUPPORTS_BIG_ENDIAN
993 select SYS_SUPPORTS_SMP
994 select NR_CPUS_DEFAULT_4
995 select SYS_HAS_EARLY_PRINTK
996 select SYS_HAS_CPU_MIPS32_R2
997 select SYS_HAS_CPU_MIPS64_R2
998 select SYS_HAS_CPU_CAVIUM_OCTEON
999 select HW_HAS_PCI
1000 select SWAP_IO_SPACE
1001 help
1002 This option supports guest running under ????
1003
1004endchoice
1005
1006source "arch/mips/alchemy/Kconfig"
1007source "arch/mips/ath25/Kconfig"
1008source "arch/mips/ath79/Kconfig"
1009source "arch/mips/bcm47xx/Kconfig"
1010source "arch/mips/bcm63xx/Kconfig"
1011source "arch/mips/bmips/Kconfig"
1012source "arch/mips/generic/Kconfig"
1013source "arch/mips/jazz/Kconfig"
1014source "arch/mips/jz4740/Kconfig"
1015source "arch/mips/lantiq/Kconfig"
1016source "arch/mips/lasat/Kconfig"
1017source "arch/mips/pic32/Kconfig"
1018source "arch/mips/pistachio/Kconfig"
1019source "arch/mips/pmcs-msp71xx/Kconfig"
1020source "arch/mips/ralink/Kconfig"
1021source "arch/mips/sgi-ip27/Kconfig"
1022source "arch/mips/sibyte/Kconfig"
1023source "arch/mips/txx9/Kconfig"
1024source "arch/mips/vr41xx/Kconfig"
1025source "arch/mips/cavium-octeon/Kconfig"
1026source "arch/mips/loongson32/Kconfig"
1027source "arch/mips/loongson64/Kconfig"
1028source "arch/mips/netlogic/Kconfig"
1029source "arch/mips/paravirt/Kconfig"
1030
1031endmenu
1032
1033config RWSEM_GENERIC_SPINLOCK
1034 bool
1035 default y
1036
1037config RWSEM_XCHGADD_ALGORITHM
1038 bool
1039
1040config GENERIC_HWEIGHT
1041 bool
1042 default y
1043
1044config GENERIC_CALIBRATE_DELAY
1045 bool
1046 default y
1047
1048config SCHED_OMIT_FRAME_POINTER
1049 bool
1050 default y
1051
1052#
1053# Select some configuration options automatically based on user selections.
1054#
1055config FW_ARC
1056 bool
1057
1058config ARCH_MAY_HAVE_PC_FDC
1059 bool
1060
1061config BOOT_RAW
1062 bool
1063
1064config CEVT_BCM1480
1065 bool
1066
1067config CEVT_DS1287
1068 bool
1069
1070config CEVT_GT641XX
1071 bool
1072
1073config CEVT_R4K
1074 bool
1075
1076config CEVT_SB1250
1077 bool
1078
1079config CEVT_TXX9
1080 bool
1081
1082config CSRC_BCM1480
1083 bool
1084
1085config CSRC_IOASIC
1086 bool
1087
1088config CSRC_R4K
1089 bool
1090
1091config CSRC_SB1250
1092 bool
1093
1094config MIPS_CLOCK_VSYSCALL
1095 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1096
1097config GPIO_TXX9
1098 select GPIOLIB
1099 bool
1100
1101config FW_CFE
1102 bool
1103
1104config ARCH_DMA_ADDR_T_64BIT
1105 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1106
1107config ARCH_SUPPORTS_UPROBES
1108 bool
1109
1110config DMA_MAYBE_COHERENT
1111 select DMA_NONCOHERENT
1112 bool
1113
1114config DMA_PERDEV_COHERENT
1115 bool
1116 select DMA_MAYBE_COHERENT
1117
1118config DMA_COHERENT
1119 bool
1120
1121config DMA_NONCOHERENT
1122 bool
1123 select NEED_DMA_MAP_STATE
1124
1125config NEED_DMA_MAP_STATE
1126 bool
1127
1128config SYS_HAS_EARLY_PRINTK
1129 bool
1130
1131config SYS_SUPPORTS_HOTPLUG_CPU
1132 bool
1133
1134config MIPS_BONITO64
1135 bool
1136
1137config MIPS_MSC
1138 bool
1139
1140config MIPS_NILE4
1141 bool
1142
1143config SYNC_R4K
1144 bool
1145
1146config MIPS_MACHINE
1147 def_bool n
1148
1149config NO_IOPORT_MAP
1150 def_bool n
1151
1152config GENERIC_CSUM
1153 bool
1154
1155config GENERIC_ISA_DMA
1156 bool
1157 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1158 select ISA_DMA_API
1159
1160config GENERIC_ISA_DMA_SUPPORT_BROKEN
1161 bool
1162 select GENERIC_ISA_DMA
1163
1164config ISA_DMA_API
1165 bool
1166
1167config HOLES_IN_ZONE
1168 bool
1169
1170config SYS_SUPPORTS_RELOCATABLE
1171 bool
1172 help
1173 Selected if the platform supports relocating the kernel.
1174 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1175 to allow access to command line and entropy sources.
1176
1177config MIPS_CBPF_JIT
1178 def_bool y
1179 depends on BPF_JIT && HAVE_CBPF_JIT
1180
1181config MIPS_EBPF_JIT
1182 def_bool y
1183 depends on BPF_JIT && HAVE_EBPF_JIT
1184
1185
1186#
1187# Endianness selection. Sufficiently obscure so many users don't know what to
1188# answer,so we try hard to limit the available choices. Also the use of a
1189# choice statement should be more obvious to the user.
1190#
1191choice
1192 prompt "Endianness selection"
1193 help
1194 Some MIPS machines can be configured for either little or big endian
1195 byte order. These modes require different kernels and a different
1196 Linux distribution. In general there is one preferred byteorder for a
1197 particular system but some systems are just as commonly used in the
1198 one or the other endianness.
1199
1200config CPU_BIG_ENDIAN
1201 bool "Big endian"
1202 depends on SYS_SUPPORTS_BIG_ENDIAN
1203
1204config CPU_LITTLE_ENDIAN
1205 bool "Little endian"
1206 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1207
1208endchoice
1209
1210config EXPORT_UASM
1211 bool
1212
1213config SYS_SUPPORTS_APM_EMULATION
1214 bool
1215
1216config SYS_SUPPORTS_BIG_ENDIAN
1217 bool
1218
1219config SYS_SUPPORTS_LITTLE_ENDIAN
1220 bool
1221
1222config SYS_SUPPORTS_HUGETLBFS
1223 bool
1224 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1225 default y
1226
1227config MIPS_HUGE_TLB_SUPPORT
1228 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1229
1230config IRQ_CPU_RM7K
1231 bool
1232
1233config IRQ_MSP_SLP
1234 bool
1235
1236config IRQ_MSP_CIC
1237 bool
1238
1239config IRQ_TXX9
1240 bool
1241
1242config IRQ_GT641XX
1243 bool
1244
1245config PCI_GT64XXX_PCI0
1246 bool
1247
1248config NO_EXCEPT_FILL
1249 bool
1250
1251config SOC_EMMA2RH
1252 bool
1253 select CEVT_R4K
1254 select CSRC_R4K
1255 select DMA_NONCOHERENT
1256 select IRQ_MIPS_CPU
1257 select SWAP_IO_SPACE
1258 select SYS_HAS_CPU_R5500
1259 select SYS_SUPPORTS_32BIT_KERNEL
1260 select SYS_SUPPORTS_64BIT_KERNEL
1261 select SYS_SUPPORTS_BIG_ENDIAN
1262
1263config SOC_PNX833X
1264 bool
1265 select CEVT_R4K
1266 select CSRC_R4K
1267 select IRQ_MIPS_CPU
1268 select DMA_NONCOHERENT
1269 select SYS_HAS_CPU_MIPS32_R2
1270 select SYS_SUPPORTS_32BIT_KERNEL
1271 select SYS_SUPPORTS_LITTLE_ENDIAN
1272 select SYS_SUPPORTS_BIG_ENDIAN
1273 select SYS_SUPPORTS_MIPS16
1274 select CPU_MIPSR2_IRQ_VI
1275
1276config SOC_PNX8335
1277 bool
1278 select SOC_PNX833X
1279
1280config MIPS_SPRAM
1281 bool
1282
1283config SWAP_IO_SPACE
1284 bool
1285
1286config SGI_HAS_INDYDOG
1287 bool
1288
1289config SGI_HAS_HAL2
1290 bool
1291
1292config SGI_HAS_SEEQ
1293 bool
1294
1295config SGI_HAS_WD93
1296 bool
1297
1298config SGI_HAS_ZILOG
1299 bool
1300
1301config SGI_HAS_I8042
1302 bool
1303
1304config DEFAULT_SGI_PARTITION
1305 bool
1306
1307config FW_ARC32
1308 bool
1309
1310config FW_SNIPROM
1311 bool
1312
1313config BOOT_ELF32
1314 bool
1315
1316config MIPS_L1_CACHE_SHIFT_4
1317 bool
1318
1319config MIPS_L1_CACHE_SHIFT_5
1320 bool
1321
1322config MIPS_L1_CACHE_SHIFT_6
1323 bool
1324
1325config MIPS_L1_CACHE_SHIFT_7
1326 bool
1327
1328config MIPS_L1_CACHE_SHIFT
1329 int
1330 default "7" if MIPS_L1_CACHE_SHIFT_7
1331 default "6" if MIPS_L1_CACHE_SHIFT_6
1332 default "5" if MIPS_L1_CACHE_SHIFT_5
1333 default "4" if MIPS_L1_CACHE_SHIFT_4
1334 default "5"
1335
1336config HAVE_STD_PC_SERIAL_PORT
1337 bool
1338
1339config ARC_CONSOLE
1340 bool "ARC console support"
1341 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1342
1343config ARC_MEMORY
1344 bool
1345 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1346 default y
1347
1348config ARC_PROMLIB
1349 bool
1350 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1351 default y
1352
1353config FW_ARC64
1354 bool
1355
1356config BOOT_ELF64
1357 bool
1358
1359menu "CPU selection"
1360
1361choice
1362 prompt "CPU type"
1363 default CPU_R4X00
1364
1365config CPU_LOONGSON3
1366 bool "Loongson 3 CPU"
1367 depends on SYS_HAS_CPU_LOONGSON3
1368 select CPU_SUPPORTS_64BIT_KERNEL
1369 select CPU_SUPPORTS_HIGHMEM
1370 select CPU_SUPPORTS_HUGEPAGES
1371 select WEAK_ORDERING
1372 select WEAK_REORDERING_BEYOND_LLSC
1373 select MIPS_PGD_C0_CONTEXT
1374 select MIPS_L1_CACHE_SHIFT_6
1375 select GPIOLIB
1376 help
1377 The Loongson 3 processor implements the MIPS64R2 instruction
1378 set with many extensions.
1379
1380config LOONGSON3_ENHANCEMENT
1381 bool "New Loongson 3 CPU Enhancements"
1382 default n
1383 select CPU_MIPSR2
1384 select CPU_HAS_PREFETCH
1385 depends on CPU_LOONGSON3
1386 help
1387 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1388 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1389 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1390 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1391 Fast TLB refill support, etc.
1392
1393 This option enable those enhancements which are not probed at run
1394 time. If you want a generic kernel to run on all Loongson 3 machines,
1395 please say 'N' here. If you want a high-performance kernel to run on
1396 new Loongson 3 machines only, please say 'Y' here.
1397
1398config CPU_LOONGSON2E
1399 bool "Loongson 2E"
1400 depends on SYS_HAS_CPU_LOONGSON2E
1401 select CPU_LOONGSON2
1402 help
1403 The Loongson 2E processor implements the MIPS III instruction set
1404 with many extensions.
1405
1406 It has an internal FPGA northbridge, which is compatible to
1407 bonito64.
1408
1409config CPU_LOONGSON2F
1410 bool "Loongson 2F"
1411 depends on SYS_HAS_CPU_LOONGSON2F
1412 select CPU_LOONGSON2
1413 select GPIOLIB
1414 help
1415 The Loongson 2F processor implements the MIPS III instruction set
1416 with many extensions.
1417
1418 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1419 have a similar programming interface with FPGA northbridge used in
1420 Loongson2E.
1421
1422config CPU_LOONGSON1B
1423 bool "Loongson 1B"
1424 depends on SYS_HAS_CPU_LOONGSON1B
1425 select CPU_LOONGSON1
1426 select LEDS_GPIO_REGISTER
1427 help
1428 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1429 release 2 instruction set.
1430
1431config CPU_LOONGSON1C
1432 bool "Loongson 1C"
1433 depends on SYS_HAS_CPU_LOONGSON1C
1434 select CPU_LOONGSON1
1435 select LEDS_GPIO_REGISTER
1436 help
1437 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1438 release 2 instruction set.
1439
1440config CPU_MIPS32_R1
1441 bool "MIPS32 Release 1"
1442 depends on SYS_HAS_CPU_MIPS32_R1
1443 select CPU_HAS_PREFETCH
1444 select CPU_SUPPORTS_32BIT_KERNEL
1445 select CPU_SUPPORTS_HIGHMEM
1446 help
1447 Choose this option to build a kernel for release 1 or later of the
1448 MIPS32 architecture. Most modern embedded systems with a 32-bit
1449 MIPS processor are based on a MIPS32 processor. If you know the
1450 specific type of processor in your system, choose those that one
1451 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1452 Release 2 of the MIPS32 architecture is available since several
1453 years so chances are you even have a MIPS32 Release 2 processor
1454 in which case you should choose CPU_MIPS32_R2 instead for better
1455 performance.
1456
1457config CPU_MIPS32_R2
1458 bool "MIPS32 Release 2"
1459 depends on SYS_HAS_CPU_MIPS32_R2
1460 select CPU_HAS_PREFETCH
1461 select CPU_SUPPORTS_32BIT_KERNEL
1462 select CPU_SUPPORTS_HIGHMEM
1463 select CPU_SUPPORTS_MSA
1464 select HAVE_KVM
1465 help
1466 Choose this option to build a kernel for release 2 or later of the
1467 MIPS32 architecture. Most modern embedded systems with a 32-bit
1468 MIPS processor are based on a MIPS32 processor. If you know the
1469 specific type of processor in your system, choose those that one
1470 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1471
1472config CPU_MIPS32_R6
1473 bool "MIPS32 Release 6"
1474 depends on SYS_HAS_CPU_MIPS32_R6
1475 select CPU_HAS_PREFETCH
1476 select CPU_SUPPORTS_32BIT_KERNEL
1477 select CPU_SUPPORTS_HIGHMEM
1478 select CPU_SUPPORTS_MSA
1479 select GENERIC_CSUM
1480 select HAVE_KVM
1481 select MIPS_O32_FP64_SUPPORT
1482 help
1483 Choose this option to build a kernel for release 6 or later of the
1484 MIPS32 architecture. New MIPS processors, starting with the Warrior
1485 family, are based on a MIPS32r6 processor. If you own an older
1486 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1487
1488config CPU_MIPS64_R1
1489 bool "MIPS64 Release 1"
1490 depends on SYS_HAS_CPU_MIPS64_R1
1491 select CPU_HAS_PREFETCH
1492 select CPU_SUPPORTS_32BIT_KERNEL
1493 select CPU_SUPPORTS_64BIT_KERNEL
1494 select CPU_SUPPORTS_HIGHMEM
1495 select CPU_SUPPORTS_HUGEPAGES
1496 help
1497 Choose this option to build a kernel for release 1 or later of the
1498 MIPS64 architecture. Many modern embedded systems with a 64-bit
1499 MIPS processor are based on a MIPS64 processor. If you know the
1500 specific type of processor in your system, choose those that one
1501 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1502 Release 2 of the MIPS64 architecture is available since several
1503 years so chances are you even have a MIPS64 Release 2 processor
1504 in which case you should choose CPU_MIPS64_R2 instead for better
1505 performance.
1506
1507config CPU_MIPS64_R2
1508 bool "MIPS64 Release 2"
1509 depends on SYS_HAS_CPU_MIPS64_R2
1510 select CPU_HAS_PREFETCH
1511 select CPU_SUPPORTS_32BIT_KERNEL
1512 select CPU_SUPPORTS_64BIT_KERNEL
1513 select CPU_SUPPORTS_HIGHMEM
1514 select CPU_SUPPORTS_HUGEPAGES
1515 select CPU_SUPPORTS_MSA
1516 select HAVE_KVM
1517 help
1518 Choose this option to build a kernel for release 2 or later of the
1519 MIPS64 architecture. Many modern embedded systems with a 64-bit
1520 MIPS processor are based on a MIPS64 processor. If you know the
1521 specific type of processor in your system, choose those that one
1522 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1523
1524config CPU_MIPS64_R6
1525 bool "MIPS64 Release 6"
1526 depends on SYS_HAS_CPU_MIPS64_R6
1527 select CPU_HAS_PREFETCH
1528 select CPU_SUPPORTS_32BIT_KERNEL
1529 select CPU_SUPPORTS_64BIT_KERNEL
1530 select CPU_SUPPORTS_HIGHMEM
1531 select CPU_SUPPORTS_MSA
1532 select GENERIC_CSUM
1533 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1534 select HAVE_KVM
1535 help
1536 Choose this option to build a kernel for release 6 or later of the
1537 MIPS64 architecture. New MIPS processors, starting with the Warrior
1538 family, are based on a MIPS64r6 processor. If you own an older
1539 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1540
1541config CPU_R3000
1542 bool "R3000"
1543 depends on SYS_HAS_CPU_R3000
1544 select CPU_HAS_WB
1545 select CPU_SUPPORTS_32BIT_KERNEL
1546 select CPU_SUPPORTS_HIGHMEM
1547 help
1548 Please make sure to pick the right CPU type. Linux/MIPS is not
1549 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1550 *not* work on R4000 machines and vice versa. However, since most
1551 of the supported machines have an R4000 (or similar) CPU, R4x00
1552 might be a safe bet. If the resulting kernel does not work,
1553 try to recompile with R3000.
1554
1555config CPU_TX39XX
1556 bool "R39XX"
1557 depends on SYS_HAS_CPU_TX39XX
1558 select CPU_SUPPORTS_32BIT_KERNEL
1559
1560config CPU_VR41XX
1561 bool "R41xx"
1562 depends on SYS_HAS_CPU_VR41XX
1563 select CPU_SUPPORTS_32BIT_KERNEL
1564 select CPU_SUPPORTS_64BIT_KERNEL
1565 help
1566 The options selects support for the NEC VR4100 series of processors.
1567 Only choose this option if you have one of these processors as a
1568 kernel built with this option will not run on any other type of
1569 processor or vice versa.
1570
1571config CPU_R4300
1572 bool "R4300"
1573 depends on SYS_HAS_CPU_R4300
1574 select CPU_SUPPORTS_32BIT_KERNEL
1575 select CPU_SUPPORTS_64BIT_KERNEL
1576 help
1577 MIPS Technologies R4300-series processors.
1578
1579config CPU_R4X00
1580 bool "R4x00"
1581 depends on SYS_HAS_CPU_R4X00
1582 select CPU_SUPPORTS_32BIT_KERNEL
1583 select CPU_SUPPORTS_64BIT_KERNEL
1584 select CPU_SUPPORTS_HUGEPAGES
1585 help
1586 MIPS Technologies R4000-series processors other than 4300, including
1587 the R4000, R4400, R4600, and 4700.
1588
1589config CPU_TX49XX
1590 bool "R49XX"
1591 depends on SYS_HAS_CPU_TX49XX
1592 select CPU_HAS_PREFETCH
1593 select CPU_SUPPORTS_32BIT_KERNEL
1594 select CPU_SUPPORTS_64BIT_KERNEL
1595 select CPU_SUPPORTS_HUGEPAGES
1596
1597config CPU_R5000
1598 bool "R5000"
1599 depends on SYS_HAS_CPU_R5000
1600 select CPU_SUPPORTS_32BIT_KERNEL
1601 select CPU_SUPPORTS_64BIT_KERNEL
1602 select CPU_SUPPORTS_HUGEPAGES
1603 help
1604 MIPS Technologies R5000-series processors other than the Nevada.
1605
1606config CPU_R5432
1607 bool "R5432"
1608 depends on SYS_HAS_CPU_R5432
1609 select CPU_SUPPORTS_32BIT_KERNEL
1610 select CPU_SUPPORTS_64BIT_KERNEL
1611 select CPU_SUPPORTS_HUGEPAGES
1612
1613config CPU_R5500
1614 bool "R5500"
1615 depends on SYS_HAS_CPU_R5500
1616 select CPU_SUPPORTS_32BIT_KERNEL
1617 select CPU_SUPPORTS_64BIT_KERNEL
1618 select CPU_SUPPORTS_HUGEPAGES
1619 help
1620 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1621 instruction set.
1622
1623config CPU_NEVADA
1624 bool "RM52xx"
1625 depends on SYS_HAS_CPU_NEVADA
1626 select CPU_SUPPORTS_32BIT_KERNEL
1627 select CPU_SUPPORTS_64BIT_KERNEL
1628 select CPU_SUPPORTS_HUGEPAGES
1629 help
1630 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1631
1632config CPU_R8000
1633 bool "R8000"
1634 depends on SYS_HAS_CPU_R8000
1635 select CPU_HAS_PREFETCH
1636 select CPU_SUPPORTS_64BIT_KERNEL
1637 help
1638 MIPS Technologies R8000 processors. Note these processors are
1639 uncommon and the support for them is incomplete.
1640
1641config CPU_R10000
1642 bool "R10000"
1643 depends on SYS_HAS_CPU_R10000
1644 select CPU_HAS_PREFETCH
1645 select CPU_SUPPORTS_32BIT_KERNEL
1646 select CPU_SUPPORTS_64BIT_KERNEL
1647 select CPU_SUPPORTS_HIGHMEM
1648 select CPU_SUPPORTS_HUGEPAGES
1649 help
1650 MIPS Technologies R10000-series processors.
1651
1652config CPU_RM7000
1653 bool "RM7000"
1654 depends on SYS_HAS_CPU_RM7000
1655 select CPU_HAS_PREFETCH
1656 select CPU_SUPPORTS_32BIT_KERNEL
1657 select CPU_SUPPORTS_64BIT_KERNEL
1658 select CPU_SUPPORTS_HIGHMEM
1659 select CPU_SUPPORTS_HUGEPAGES
1660
1661config CPU_SB1
1662 bool "SB1"
1663 depends on SYS_HAS_CPU_SB1
1664 select CPU_SUPPORTS_32BIT_KERNEL
1665 select CPU_SUPPORTS_64BIT_KERNEL
1666 select CPU_SUPPORTS_HIGHMEM
1667 select CPU_SUPPORTS_HUGEPAGES
1668 select WEAK_ORDERING
1669
1670config CPU_CAVIUM_OCTEON
1671 bool "Cavium Octeon processor"
1672 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1673 select CPU_HAS_PREFETCH
1674 select CPU_SUPPORTS_64BIT_KERNEL
1675 select WEAK_ORDERING
1676 select CPU_SUPPORTS_HIGHMEM
1677 select CPU_SUPPORTS_HUGEPAGES
1678 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1679 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1680 select MIPS_L1_CACHE_SHIFT_7
1681 select HAVE_KVM
1682 help
1683 The Cavium Octeon processor is a highly integrated chip containing
1684 many ethernet hardware widgets for networking tasks. The processor
1685 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1686 Full details can be found at http://www.caviumnetworks.com.
1687
1688config CPU_BMIPS
1689 bool "Broadcom BMIPS"
1690 depends on SYS_HAS_CPU_BMIPS
1691 select CPU_MIPS32
1692 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1693 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1694 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1695 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1696 select CPU_SUPPORTS_32BIT_KERNEL
1697 select DMA_NONCOHERENT
1698 select IRQ_MIPS_CPU
1699 select SWAP_IO_SPACE
1700 select WEAK_ORDERING
1701 select CPU_SUPPORTS_HIGHMEM
1702 select CPU_HAS_PREFETCH
1703 select CPU_SUPPORTS_CPUFREQ
1704 select MIPS_EXTERNAL_TIMER
1705 help
1706 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1707
1708config CPU_XLR
1709 bool "Netlogic XLR SoC"
1710 depends on SYS_HAS_CPU_XLR
1711 select CPU_SUPPORTS_32BIT_KERNEL
1712 select CPU_SUPPORTS_64BIT_KERNEL
1713 select CPU_SUPPORTS_HIGHMEM
1714 select CPU_SUPPORTS_HUGEPAGES
1715 select WEAK_ORDERING
1716 select WEAK_REORDERING_BEYOND_LLSC
1717 help
1718 Netlogic Microsystems XLR/XLS processors.
1719
1720config CPU_XLP
1721 bool "Netlogic XLP SoC"
1722 depends on SYS_HAS_CPU_XLP
1723 select CPU_SUPPORTS_32BIT_KERNEL
1724 select CPU_SUPPORTS_64BIT_KERNEL
1725 select CPU_SUPPORTS_HIGHMEM
1726 select WEAK_ORDERING
1727 select WEAK_REORDERING_BEYOND_LLSC
1728 select CPU_HAS_PREFETCH
1729 select CPU_MIPSR2
1730 select CPU_SUPPORTS_HUGEPAGES
1731 select MIPS_ASID_BITS_VARIABLE
1732 help
1733 Netlogic Microsystems XLP processors.
1734endchoice
1735
1736config CPU_MIPS32_3_5_FEATURES
1737 bool "MIPS32 Release 3.5 Features"
1738 depends on SYS_HAS_CPU_MIPS32_R3_5
1739 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1740 help
1741 Choose this option to build a kernel for release 2 or later of the
1742 MIPS32 architecture including features from the 3.5 release such as
1743 support for Enhanced Virtual Addressing (EVA).
1744
1745config CPU_MIPS32_3_5_EVA
1746 bool "Enhanced Virtual Addressing (EVA)"
1747 depends on CPU_MIPS32_3_5_FEATURES
1748 select EVA
1749 default y
1750 help
1751 Choose this option if you want to enable the Enhanced Virtual
1752 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1753 One of its primary benefits is an increase in the maximum size
1754 of lowmem (up to 3GB). If unsure, say 'N' here.
1755
1756config CPU_MIPS32_R5_FEATURES
1757 bool "MIPS32 Release 5 Features"
1758 depends on SYS_HAS_CPU_MIPS32_R5
1759 depends on CPU_MIPS32_R2
1760 help
1761 Choose this option to build a kernel for release 2 or later of the
1762 MIPS32 architecture including features from release 5 such as
1763 support for Extended Physical Addressing (XPA).
1764
1765config CPU_MIPS32_R5_XPA
1766 bool "Extended Physical Addressing (XPA)"
1767 depends on CPU_MIPS32_R5_FEATURES
1768 depends on !EVA
1769 depends on !PAGE_SIZE_4KB
1770 depends on SYS_SUPPORTS_HIGHMEM
1771 select XPA
1772 select HIGHMEM
1773 select ARCH_PHYS_ADDR_T_64BIT
1774 default n
1775 help
1776 Choose this option if you want to enable the Extended Physical
1777 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1778 benefit is to increase physical addressing equal to or greater
1779 than 40 bits. Note that this has the side effect of turning on
1780 64-bit addressing which in turn makes the PTEs 64-bit in size.
1781 If unsure, say 'N' here.
1782
1783if CPU_LOONGSON2F
1784config CPU_NOP_WORKAROUNDS
1785 bool
1786
1787config CPU_JUMP_WORKAROUNDS
1788 bool
1789
1790config CPU_LOONGSON2F_WORKAROUNDS
1791 bool "Loongson 2F Workarounds"
1792 default y
1793 select CPU_NOP_WORKAROUNDS
1794 select CPU_JUMP_WORKAROUNDS
1795 help
1796 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1797 require workarounds. Without workarounds the system may hang
1798 unexpectedly. For more information please refer to the gas
1799 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1800
1801 Loongson 2F03 and later have fixed these issues and no workarounds
1802 are needed. The workarounds have no significant side effect on them
1803 but may decrease the performance of the system so this option should
1804 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1805 systems.
1806
1807 If unsure, please say Y.
1808endif # CPU_LOONGSON2F
1809
1810config SYS_SUPPORTS_ZBOOT
1811 bool
1812 select HAVE_KERNEL_GZIP
1813 select HAVE_KERNEL_BZIP2
1814 select HAVE_KERNEL_LZ4
1815 select HAVE_KERNEL_LZMA
1816 select HAVE_KERNEL_LZO
1817 select HAVE_KERNEL_XZ
1818
1819config SYS_SUPPORTS_ZBOOT_UART16550
1820 bool
1821 select SYS_SUPPORTS_ZBOOT
1822
1823config SYS_SUPPORTS_ZBOOT_UART_PROM
1824 bool
1825 select SYS_SUPPORTS_ZBOOT
1826
1827config CPU_LOONGSON2
1828 bool
1829 select CPU_SUPPORTS_32BIT_KERNEL
1830 select CPU_SUPPORTS_64BIT_KERNEL
1831 select CPU_SUPPORTS_HIGHMEM
1832 select CPU_SUPPORTS_HUGEPAGES
1833
1834config CPU_LOONGSON1
1835 bool
1836 select CPU_MIPS32
1837 select CPU_MIPSR2
1838 select CPU_HAS_PREFETCH
1839 select CPU_SUPPORTS_32BIT_KERNEL
1840 select CPU_SUPPORTS_HIGHMEM
1841 select CPU_SUPPORTS_CPUFREQ
1842
1843config CPU_BMIPS32_3300
1844 select SMP_UP if SMP
1845 bool
1846
1847config CPU_BMIPS4350
1848 bool
1849 select SYS_SUPPORTS_SMP
1850 select SYS_SUPPORTS_HOTPLUG_CPU
1851
1852config CPU_BMIPS4380
1853 bool
1854 select MIPS_L1_CACHE_SHIFT_6
1855 select SYS_SUPPORTS_SMP
1856 select SYS_SUPPORTS_HOTPLUG_CPU
1857 select CPU_HAS_RIXI
1858
1859config CPU_BMIPS5000
1860 bool
1861 select MIPS_CPU_SCACHE
1862 select MIPS_L1_CACHE_SHIFT_7
1863 select SYS_SUPPORTS_SMP
1864 select SYS_SUPPORTS_HOTPLUG_CPU
1865 select CPU_HAS_RIXI
1866
1867config SYS_HAS_CPU_LOONGSON3
1868 bool
1869 select CPU_SUPPORTS_CPUFREQ
1870 select CPU_HAS_RIXI
1871
1872config SYS_HAS_CPU_LOONGSON2E
1873 bool
1874
1875config SYS_HAS_CPU_LOONGSON2F
1876 bool
1877 select CPU_SUPPORTS_CPUFREQ
1878 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1879 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1880
1881config SYS_HAS_CPU_LOONGSON1B
1882 bool
1883
1884config SYS_HAS_CPU_LOONGSON1C
1885 bool
1886
1887config SYS_HAS_CPU_MIPS32_R1
1888 bool
1889
1890config SYS_HAS_CPU_MIPS32_R2
1891 bool
1892
1893config SYS_HAS_CPU_MIPS32_R3_5
1894 bool
1895
1896config SYS_HAS_CPU_MIPS32_R5
1897 bool
1898
1899config SYS_HAS_CPU_MIPS32_R6
1900 bool
1901
1902config SYS_HAS_CPU_MIPS64_R1
1903 bool
1904
1905config SYS_HAS_CPU_MIPS64_R2
1906 bool
1907
1908config SYS_HAS_CPU_MIPS64_R6
1909 bool
1910
1911config SYS_HAS_CPU_R3000
1912 bool
1913
1914config SYS_HAS_CPU_TX39XX
1915 bool
1916
1917config SYS_HAS_CPU_VR41XX
1918 bool
1919
1920config SYS_HAS_CPU_R4300
1921 bool
1922
1923config SYS_HAS_CPU_R4X00
1924 bool
1925
1926config SYS_HAS_CPU_TX49XX
1927 bool
1928
1929config SYS_HAS_CPU_R5000
1930 bool
1931
1932config SYS_HAS_CPU_R5432
1933 bool
1934
1935config SYS_HAS_CPU_R5500
1936 bool
1937
1938config SYS_HAS_CPU_NEVADA
1939 bool
1940
1941config SYS_HAS_CPU_R8000
1942 bool
1943
1944config SYS_HAS_CPU_R10000
1945 bool
1946
1947config SYS_HAS_CPU_RM7000
1948 bool
1949
1950config SYS_HAS_CPU_SB1
1951 bool
1952
1953config SYS_HAS_CPU_CAVIUM_OCTEON
1954 bool
1955
1956config SYS_HAS_CPU_BMIPS
1957 bool
1958
1959config SYS_HAS_CPU_BMIPS32_3300
1960 bool
1961 select SYS_HAS_CPU_BMIPS
1962
1963config SYS_HAS_CPU_BMIPS4350
1964 bool
1965 select SYS_HAS_CPU_BMIPS
1966
1967config SYS_HAS_CPU_BMIPS4380
1968 bool
1969 select SYS_HAS_CPU_BMIPS
1970
1971config SYS_HAS_CPU_BMIPS5000
1972 bool
1973 select SYS_HAS_CPU_BMIPS
1974
1975config SYS_HAS_CPU_XLR
1976 bool
1977
1978config SYS_HAS_CPU_XLP
1979 bool
1980
1981config MIPS_MALTA_PM
1982 depends on MIPS_MALTA
1983 depends on PCI
1984 bool
1985 default y
1986
1987#
1988# CPU may reorder R->R, R->W, W->R, W->W
1989# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1990#
1991config WEAK_ORDERING
1992 bool
1993
1994#
1995# CPU may reorder reads and writes beyond LL/SC
1996# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1997#
1998config WEAK_REORDERING_BEYOND_LLSC
1999 bool
2000endmenu
2001
2002#
2003# These two indicate any level of the MIPS32 and MIPS64 architecture
2004#
2005config CPU_MIPS32
2006 bool
2007 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2008
2009config CPU_MIPS64
2010 bool
2011 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2012
2013#
2014# These two indicate the revision of the architecture, either Release 1 or Release 2
2015#
2016config CPU_MIPSR1
2017 bool
2018 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2019
2020config CPU_MIPSR2
2021 bool
2022 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2023 select CPU_HAS_RIXI
2024 select MIPS_SPRAM
2025
2026config CPU_MIPSR6
2027 bool
2028 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2029 select CPU_HAS_RIXI
2030 select HAVE_ARCH_BITREVERSE
2031 select MIPS_ASID_BITS_VARIABLE
2032 select MIPS_CRC_SUPPORT
2033 select MIPS_SPRAM
2034
2035config EVA
2036 bool
2037
2038config XPA
2039 bool
2040
2041config SYS_SUPPORTS_32BIT_KERNEL
2042 bool
2043config SYS_SUPPORTS_64BIT_KERNEL
2044 bool
2045config CPU_SUPPORTS_32BIT_KERNEL
2046 bool
2047config CPU_SUPPORTS_64BIT_KERNEL
2048 bool
2049config CPU_SUPPORTS_CPUFREQ
2050 bool
2051config CPU_SUPPORTS_ADDRWINCFG
2052 bool
2053config CPU_SUPPORTS_HUGEPAGES
2054 bool
2055config CPU_SUPPORTS_UNCACHED_ACCELERATED
2056 bool
2057config MIPS_PGD_C0_CONTEXT
2058 bool
2059 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2060
2061#
2062# Set to y for ptrace access to watch registers.
2063#
2064config HARDWARE_WATCHPOINTS
2065 bool
2066 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2067
2068menu "Kernel type"
2069
2070choice
2071 prompt "Kernel code model"
2072 help
2073 You should only select this option if you have a workload that
2074 actually benefits from 64-bit processing or if your machine has
2075 large memory. You will only be presented a single option in this
2076 menu if your system does not support both 32-bit and 64-bit kernels.
2077
2078config 32BIT
2079 bool "32-bit kernel"
2080 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2081 select TRAD_SIGNALS
2082 help
2083 Select this option if you want to build a 32-bit kernel.
2084
2085config 64BIT
2086 bool "64-bit kernel"
2087 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2088 help
2089 Select this option if you want to build a 64-bit kernel.
2090
2091endchoice
2092
2093config KVM_GUEST
2094 bool "KVM Guest Kernel"
2095 depends on BROKEN_ON_SMP
2096 help
2097 Select this option if building a guest kernel for KVM (Trap & Emulate)
2098 mode.
2099
2100config KVM_GUEST_TIMER_FREQ
2101 int "Count/Compare Timer Frequency (MHz)"
2102 depends on KVM_GUEST
2103 default 100
2104 help
2105 Set this to non-zero if building a guest kernel for KVM to skip RTC
2106 emulation when determining guest CPU Frequency. Instead, the guest's
2107 timer frequency is specified directly.
2108
2109config MIPS_VA_BITS_48
2110 bool "48 bits virtual memory"
2111 depends on 64BIT
2112 help
2113 Support a maximum at least 48 bits of application virtual
2114 memory. Default is 40 bits or less, depending on the CPU.
2115 For page sizes 16k and above, this option results in a small
2116 memory overhead for page tables. For 4k page size, a fourth
2117 level of page tables is added which imposes both a memory
2118 overhead as well as slower TLB fault handling.
2119
2120 If unsure, say N.
2121
2122choice
2123 prompt "Kernel page size"
2124 default PAGE_SIZE_4KB
2125
2126config PAGE_SIZE_4KB
2127 bool "4kB"
2128 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2129 help
2130 This option select the standard 4kB Linux page size. On some
2131 R3000-family processors this is the only available page size. Using
2132 4kB page size will minimize memory consumption and is therefore
2133 recommended for low memory systems.
2134
2135config PAGE_SIZE_8KB
2136 bool "8kB"
2137 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2138 depends on !MIPS_VA_BITS_48
2139 help
2140 Using 8kB page size will result in higher performance kernel at
2141 the price of higher memory consumption. This option is available
2142 only on R8000 and cnMIPS processors. Note that you will need a
2143 suitable Linux distribution to support this.
2144
2145config PAGE_SIZE_16KB
2146 bool "16kB"
2147 depends on !CPU_R3000 && !CPU_TX39XX
2148 help
2149 Using 16kB page size will result in higher performance kernel at
2150 the price of higher memory consumption. This option is available on
2151 all non-R3000 family processors. Note that you will need a suitable
2152 Linux distribution to support this.
2153
2154config PAGE_SIZE_32KB
2155 bool "32kB"
2156 depends on CPU_CAVIUM_OCTEON
2157 depends on !MIPS_VA_BITS_48
2158 help
2159 Using 32kB page size will result in higher performance kernel at
2160 the price of higher memory consumption. This option is available
2161 only on cnMIPS cores. Note that you will need a suitable Linux
2162 distribution to support this.
2163
2164config PAGE_SIZE_64KB
2165 bool "64kB"
2166 depends on !CPU_R3000 && !CPU_TX39XX
2167 help
2168 Using 64kB page size will result in higher performance kernel at
2169 the price of higher memory consumption. This option is available on
2170 all non-R3000 family processor. Not that at the time of this
2171 writing this option is still high experimental.
2172
2173endchoice
2174
2175config FORCE_MAX_ZONEORDER
2176 int "Maximum zone order"
2177 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2178 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2179 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2180 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2181 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2182 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2183 range 11 64
2184 default "11"
2185 help
2186 The kernel memory allocator divides physically contiguous memory
2187 blocks into "zones", where each zone is a power of two number of
2188 pages. This option selects the largest power of two that the kernel
2189 keeps in the memory allocator. If you need to allocate very large
2190 blocks of physically contiguous memory, then you may need to
2191 increase this value.
2192
2193 This config option is actually maximum order plus one. For example,
2194 a value of 11 means that the largest free memory block is 2^10 pages.
2195
2196 The page size is not necessarily 4KB. Keep this in mind
2197 when choosing a value for this option.
2198
2199config BOARD_SCACHE
2200 bool
2201
2202config IP22_CPU_SCACHE
2203 bool
2204 select BOARD_SCACHE
2205
2206#
2207# Support for a MIPS32 / MIPS64 style S-caches
2208#
2209config MIPS_CPU_SCACHE
2210 bool
2211 select BOARD_SCACHE
2212
2213config R5000_CPU_SCACHE
2214 bool
2215 select BOARD_SCACHE
2216
2217config RM7000_CPU_SCACHE
2218 bool
2219 select BOARD_SCACHE
2220
2221config SIBYTE_DMA_PAGEOPS
2222 bool "Use DMA to clear/copy pages"
2223 depends on CPU_SB1
2224 help
2225 Instead of using the CPU to zero and copy pages, use a Data Mover
2226 channel. These DMA channels are otherwise unused by the standard
2227 SiByte Linux port. Seems to give a small performance benefit.
2228
2229config CPU_HAS_PREFETCH
2230 bool
2231
2232config CPU_GENERIC_DUMP_TLB
2233 bool
2234 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2235
2236config CPU_R4K_FPU
2237 bool
2238 default y if !(CPU_R3000 || CPU_TX39XX)
2239
2240config CPU_R4K_CACHE_TLB
2241 bool
2242 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2243
2244config MIPS_MT_SMP
2245 bool "MIPS MT SMP support (1 TC on each available VPE)"
2246 default y
2247 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2248 select CPU_MIPSR2_IRQ_VI
2249 select CPU_MIPSR2_IRQ_EI
2250 select SYNC_R4K
2251 select MIPS_MT
2252 select SMP
2253 select SMP_UP
2254 select SYS_SUPPORTS_SMP
2255 select SYS_SUPPORTS_SCHED_SMT
2256 select MIPS_PERF_SHARED_TC_COUNTERS
2257 help
2258 This is a kernel model which is known as SMVP. This is supported
2259 on cores with the MT ASE and uses the available VPEs to implement
2260 virtual processors which supports SMP. This is equivalent to the
2261 Intel Hyperthreading feature. For further information go to
2262 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2263
2264config MIPS_MT
2265 bool
2266
2267config SCHED_SMT
2268 bool "SMT (multithreading) scheduler support"
2269 depends on SYS_SUPPORTS_SCHED_SMT
2270 default n
2271 help
2272 SMT scheduler support improves the CPU scheduler's decision making
2273 when dealing with MIPS MT enabled cores at a cost of slightly
2274 increased overhead in some places. If unsure say N here.
2275
2276config SYS_SUPPORTS_SCHED_SMT
2277 bool
2278
2279config SYS_SUPPORTS_MULTITHREADING
2280 bool
2281
2282config MIPS_MT_FPAFF
2283 bool "Dynamic FPU affinity for FP-intensive threads"
2284 default y
2285 depends on MIPS_MT_SMP
2286
2287config MIPSR2_TO_R6_EMULATOR
2288 bool "MIPS R2-to-R6 emulator"
2289 depends on CPU_MIPSR6
2290 default y
2291 help
2292 Choose this option if you want to run non-R6 MIPS userland code.
2293 Even if you say 'Y' here, the emulator will still be disabled by
2294 default. You can enable it using the 'mipsr2emu' kernel option.
2295 The only reason this is a build-time option is to save ~14K from the
2296 final kernel image.
2297
2298config SYS_SUPPORTS_VPE_LOADER
2299 bool
2300 depends on SYS_SUPPORTS_MULTITHREADING
2301 help
2302 Indicates that the platform supports the VPE loader, and provides
2303 physical_memsize.
2304
2305config MIPS_VPE_LOADER
2306 bool "VPE loader support."
2307 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2308 select CPU_MIPSR2_IRQ_VI
2309 select CPU_MIPSR2_IRQ_EI
2310 select MIPS_MT
2311 help
2312 Includes a loader for loading an elf relocatable object
2313 onto another VPE and running it.
2314
2315config MIPS_VPE_LOADER_CMP
2316 bool
2317 default "y"
2318 depends on MIPS_VPE_LOADER && MIPS_CMP
2319
2320config MIPS_VPE_LOADER_MT
2321 bool
2322 default "y"
2323 depends on MIPS_VPE_LOADER && !MIPS_CMP
2324
2325config MIPS_VPE_LOADER_TOM
2326 bool "Load VPE program into memory hidden from linux"
2327 depends on MIPS_VPE_LOADER
2328 default y
2329 help
2330 The loader can use memory that is present but has been hidden from
2331 Linux using the kernel command line option "mem=xxMB". It's up to
2332 you to ensure the amount you put in the option and the space your
2333 program requires is less or equal to the amount physically present.
2334
2335config MIPS_VPE_APSP_API
2336 bool "Enable support for AP/SP API (RTLX)"
2337 depends on MIPS_VPE_LOADER
2338
2339config MIPS_VPE_APSP_API_CMP
2340 bool
2341 default "y"
2342 depends on MIPS_VPE_APSP_API && MIPS_CMP
2343
2344config MIPS_VPE_APSP_API_MT
2345 bool
2346 default "y"
2347 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2348
2349config MIPS_CMP
2350 bool "MIPS CMP framework support (DEPRECATED)"
2351 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2352 select SMP
2353 select SYNC_R4K
2354 select SYS_SUPPORTS_SMP
2355 select WEAK_ORDERING
2356 default n
2357 help
2358 Select this if you are using a bootloader which implements the "CMP
2359 framework" protocol (ie. YAMON) and want your kernel to make use of
2360 its ability to start secondary CPUs.
2361
2362 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2363 instead of this.
2364
2365config MIPS_CPS
2366 bool "MIPS Coherent Processing System support"
2367 depends on SYS_SUPPORTS_MIPS_CPS
2368 select MIPS_CM
2369 select MIPS_CPS_PM if HOTPLUG_CPU
2370 select SMP
2371 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2372 select SYS_SUPPORTS_HOTPLUG_CPU
2373 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2374 select SYS_SUPPORTS_SMP
2375 select WEAK_ORDERING
2376 help
2377 Select this if you wish to run an SMP kernel across multiple cores
2378 within a MIPS Coherent Processing System. When this option is
2379 enabled the kernel will probe for other cores and boot them with
2380 no external assistance. It is safe to enable this when hardware
2381 support is unavailable.
2382
2383config MIPS_CPS_PM
2384 depends on MIPS_CPS
2385 bool
2386
2387config MIPS_CM
2388 bool
2389 select MIPS_CPC
2390
2391config MIPS_CPC
2392 bool
2393
2394config SB1_PASS_2_WORKAROUNDS
2395 bool
2396 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2397 default y
2398
2399config SB1_PASS_2_1_WORKAROUNDS
2400 bool
2401 depends on CPU_SB1 && CPU_SB1_PASS_2
2402 default y
2403
2404
2405config ARCH_PHYS_ADDR_T_64BIT
2406 bool
2407
2408choice
2409 prompt "SmartMIPS or microMIPS ASE support"
2410
2411config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2412 bool "None"
2413 help
2414 Select this if you want neither microMIPS nor SmartMIPS support
2415
2416config CPU_HAS_SMARTMIPS
2417 depends on SYS_SUPPORTS_SMARTMIPS
2418 bool "SmartMIPS"
2419 help
2420 SmartMIPS is a extension of the MIPS32 architecture aimed at
2421 increased security at both hardware and software level for
2422 smartcards. Enabling this option will allow proper use of the
2423 SmartMIPS instructions by Linux applications. However a kernel with
2424 this option will not work on a MIPS core without SmartMIPS core. If
2425 you don't know you probably don't have SmartMIPS and should say N
2426 here.
2427
2428config CPU_MICROMIPS
2429 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2430 bool "microMIPS"
2431 help
2432 When this option is enabled the kernel will be built using the
2433 microMIPS ISA
2434
2435endchoice
2436
2437config CPU_HAS_MSA
2438 bool "Support for the MIPS SIMD Architecture"
2439 depends on CPU_SUPPORTS_MSA
2440 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2441 help
2442 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2443 and a set of SIMD instructions to operate on them. When this option
2444 is enabled the kernel will support allocating & switching MSA
2445 vector register contexts. If you know that your kernel will only be
2446 running on CPUs which do not support MSA or that your userland will
2447 not be making use of it then you may wish to say N here to reduce
2448 the size & complexity of your kernel.
2449
2450 If unsure, say Y.
2451
2452config CPU_HAS_WB
2453 bool
2454
2455config XKS01
2456 bool
2457
2458config CPU_HAS_RIXI
2459 bool
2460
2461#
2462# Vectored interrupt mode is an R2 feature
2463#
2464config CPU_MIPSR2_IRQ_VI
2465 bool
2466
2467#
2468# Extended interrupt mode is an R2 feature
2469#
2470config CPU_MIPSR2_IRQ_EI
2471 bool
2472
2473config CPU_HAS_SYNC
2474 bool
2475 depends on !CPU_R3000
2476 default y
2477
2478#
2479# CPU non-features
2480#
2481config CPU_DADDI_WORKAROUNDS
2482 bool
2483
2484config CPU_R4000_WORKAROUNDS
2485 bool
2486 select CPU_R4400_WORKAROUNDS
2487
2488config CPU_R4400_WORKAROUNDS
2489 bool
2490
2491config MIPS_ASID_SHIFT
2492 int
2493 default 6 if CPU_R3000 || CPU_TX39XX
2494 default 4 if CPU_R8000
2495 default 0
2496
2497config MIPS_ASID_BITS
2498 int
2499 default 0 if MIPS_ASID_BITS_VARIABLE
2500 default 6 if CPU_R3000 || CPU_TX39XX
2501 default 8
2502
2503config MIPS_ASID_BITS_VARIABLE
2504 bool
2505
2506config MIPS_CRC_SUPPORT
2507 bool
2508
2509#
2510# - Highmem only makes sense for the 32-bit kernel.
2511# - The current highmem code will only work properly on physically indexed
2512# caches such as R3000, SB1, R7000 or those that look like they're virtually
2513# indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2514# moment we protect the user and offer the highmem option only on machines
2515# where it's known to be safe. This will not offer highmem on a few systems
2516# such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2517# indexed CPUs but we're playing safe.
2518# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2519# know they might have memory configurations that could make use of highmem
2520# support.
2521#
2522config HIGHMEM
2523 bool "High Memory Support"
2524 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2525
2526config CPU_SUPPORTS_HIGHMEM
2527 bool
2528
2529config SYS_SUPPORTS_HIGHMEM
2530 bool
2531
2532config SYS_SUPPORTS_SMARTMIPS
2533 bool
2534
2535config SYS_SUPPORTS_MICROMIPS
2536 bool
2537
2538config SYS_SUPPORTS_MIPS16
2539 bool
2540 help
2541 This option must be set if a kernel might be executed on a MIPS16-
2542 enabled CPU even if MIPS16 is not actually being used. In other
2543 words, it makes the kernel MIPS16-tolerant.
2544
2545config CPU_SUPPORTS_MSA
2546 bool
2547
2548config ARCH_FLATMEM_ENABLE
2549 def_bool y
2550 depends on !NUMA && !CPU_LOONGSON2
2551
2552config ARCH_DISCONTIGMEM_ENABLE
2553 bool
2554 default y if SGI_IP27
2555 help
2556 Say Y to support efficient handling of discontiguous physical memory,
2557 for architectures which are either NUMA (Non-Uniform Memory Access)
2558 or have huge holes in the physical address space for other reasons.
2559 See <file:Documentation/vm/numa> for more.
2560
2561config ARCH_SPARSEMEM_ENABLE
2562 bool
2563 select SPARSEMEM_STATIC
2564
2565config NUMA
2566 bool "NUMA Support"
2567 depends on SYS_SUPPORTS_NUMA
2568 help
2569 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2570 Access). This option improves performance on systems with more
2571 than two nodes; on two node systems it is generally better to
2572 leave it disabled; on single node systems disable this option
2573 disabled.
2574
2575config SYS_SUPPORTS_NUMA
2576 bool
2577
2578config RELOCATABLE
2579 bool "Relocatable kernel"
2580 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2581 help
2582 This builds a kernel image that retains relocation information
2583 so it can be loaded someplace besides the default 1MB.
2584 The relocations make the kernel binary about 15% larger,
2585 but are discarded at runtime
2586
2587config RELOCATION_TABLE_SIZE
2588 hex "Relocation table size"
2589 depends on RELOCATABLE
2590 range 0x0 0x01000000
2591 default "0x00100000"
2592 ---help---
2593 A table of relocation data will be appended to the kernel binary
2594 and parsed at boot to fix up the relocated kernel.
2595
2596 This option allows the amount of space reserved for the table to be
2597 adjusted, although the default of 1Mb should be ok in most cases.
2598
2599 The build will fail and a valid size suggested if this is too small.
2600
2601 If unsure, leave at the default value.
2602
2603config RANDOMIZE_BASE
2604 bool "Randomize the address of the kernel image"
2605 depends on RELOCATABLE
2606 ---help---
2607 Randomizes the physical and virtual address at which the
2608 kernel image is loaded, as a security feature that
2609 deters exploit attempts relying on knowledge of the location
2610 of kernel internals.
2611
2612 Entropy is generated using any coprocessor 0 registers available.
2613
2614 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2615
2616 If unsure, say N.
2617
2618config RANDOMIZE_BASE_MAX_OFFSET
2619 hex "Maximum kASLR offset" if EXPERT
2620 depends on RANDOMIZE_BASE
2621 range 0x0 0x40000000 if EVA || 64BIT
2622 range 0x0 0x08000000
2623 default "0x01000000"
2624 ---help---
2625 When kASLR is active, this provides the maximum offset that will
2626 be applied to the kernel image. It should be set according to the
2627 amount of physical RAM available in the target system minus
2628 PHYSICAL_START and must be a power of 2.
2629
2630 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2631 EVA or 64-bit. The default is 16Mb.
2632
2633config NODES_SHIFT
2634 int
2635 default "6"
2636 depends on NEED_MULTIPLE_NODES
2637
2638config HW_PERF_EVENTS
2639 bool "Enable hardware performance counter support for perf events"
2640 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2641 default y
2642 help
2643 Enable hardware performance counter support for perf events. If
2644 disabled, perf events will use software events only.
2645
2646source "mm/Kconfig"
2647
2648config SMP
2649 bool "Multi-Processing support"
2650 depends on SYS_SUPPORTS_SMP
2651 help
2652 This enables support for systems with more than one CPU. If you have
2653 a system with only one CPU, say N. If you have a system with more
2654 than one CPU, say Y.
2655
2656 If you say N here, the kernel will run on uni- and multiprocessor
2657 machines, but will use only one CPU of a multiprocessor machine. If
2658 you say Y here, the kernel will run on many, but not all,
2659 uniprocessor machines. On a uniprocessor machine, the kernel
2660 will run faster if you say N here.
2661
2662 People using multiprocessor machines who say Y here should also say
2663 Y to "Enhanced Real Time Clock Support", below.
2664
2665 See also the SMP-HOWTO available at
2666 <http://www.tldp.org/docs.html#howto>.
2667
2668 If you don't know what to do here, say N.
2669
2670config HOTPLUG_CPU
2671 bool "Support for hot-pluggable CPUs"
2672 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2673 help
2674 Say Y here to allow turning CPUs off and on. CPUs can be
2675 controlled through /sys/devices/system/cpu.
2676 (Note: power management support will enable this option
2677 automatically on SMP systems. )
2678 Say N if you want to disable CPU hotplug.
2679
2680config SMP_UP
2681 bool
2682
2683config SYS_SUPPORTS_MIPS_CMP
2684 bool
2685
2686config SYS_SUPPORTS_MIPS_CPS
2687 bool
2688
2689config SYS_SUPPORTS_SMP
2690 bool
2691
2692config NR_CPUS_DEFAULT_4
2693 bool
2694
2695config NR_CPUS_DEFAULT_8
2696 bool
2697
2698config NR_CPUS_DEFAULT_16
2699 bool
2700
2701config NR_CPUS_DEFAULT_32
2702 bool
2703
2704config NR_CPUS_DEFAULT_64
2705 bool
2706
2707config NR_CPUS
2708 int "Maximum number of CPUs (2-256)"
2709 range 2 256
2710 depends on SMP
2711 default "4" if NR_CPUS_DEFAULT_4
2712 default "8" if NR_CPUS_DEFAULT_8
2713 default "16" if NR_CPUS_DEFAULT_16
2714 default "32" if NR_CPUS_DEFAULT_32
2715 default "64" if NR_CPUS_DEFAULT_64
2716 help
2717 This allows you to specify the maximum number of CPUs which this
2718 kernel will support. The maximum supported value is 32 for 32-bit
2719 kernel and 64 for 64-bit kernels; the minimum value which makes
2720 sense is 1 for Qemu (useful only for kernel debugging purposes)
2721 and 2 for all others.
2722
2723 This is purely to save memory - each supported CPU adds
2724 approximately eight kilobytes to the kernel image. For best
2725 performance should round up your number of processors to the next
2726 power of two.
2727
2728config MIPS_PERF_SHARED_TC_COUNTERS
2729 bool
2730
2731config MIPS_NR_CPU_NR_MAP_1024
2732 bool
2733
2734config MIPS_NR_CPU_NR_MAP
2735 int
2736 depends on SMP
2737 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2738 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2739
2740#
2741# Timer Interrupt Frequency Configuration
2742#
2743
2744choice
2745 prompt "Timer frequency"
2746 default HZ_250
2747 help
2748 Allows the configuration of the timer frequency.
2749
2750 config HZ_24
2751 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2752
2753 config HZ_48
2754 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2755
2756 config HZ_100
2757 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2758
2759 config HZ_128
2760 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2761
2762 config HZ_250
2763 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2764
2765 config HZ_256
2766 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2767
2768 config HZ_1000
2769 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2770
2771 config HZ_1024
2772 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2773
2774endchoice
2775
2776config SYS_SUPPORTS_24HZ
2777 bool
2778
2779config SYS_SUPPORTS_48HZ
2780 bool
2781
2782config SYS_SUPPORTS_100HZ
2783 bool
2784
2785config SYS_SUPPORTS_128HZ
2786 bool
2787
2788config SYS_SUPPORTS_250HZ
2789 bool
2790
2791config SYS_SUPPORTS_256HZ
2792 bool
2793
2794config SYS_SUPPORTS_1000HZ
2795 bool
2796
2797config SYS_SUPPORTS_1024HZ
2798 bool
2799
2800config SYS_SUPPORTS_ARBIT_HZ
2801 bool
2802 default y if !SYS_SUPPORTS_24HZ && \
2803 !SYS_SUPPORTS_48HZ && \
2804 !SYS_SUPPORTS_100HZ && \
2805 !SYS_SUPPORTS_128HZ && \
2806 !SYS_SUPPORTS_250HZ && \
2807 !SYS_SUPPORTS_256HZ && \
2808 !SYS_SUPPORTS_1000HZ && \
2809 !SYS_SUPPORTS_1024HZ
2810
2811config HZ
2812 int
2813 default 24 if HZ_24
2814 default 48 if HZ_48
2815 default 100 if HZ_100
2816 default 128 if HZ_128
2817 default 250 if HZ_250
2818 default 256 if HZ_256
2819 default 1000 if HZ_1000
2820 default 1024 if HZ_1024
2821
2822config SCHED_HRTICK
2823 def_bool HIGH_RES_TIMERS
2824
2825source "kernel/Kconfig.preempt"
2826
2827config KEXEC
2828 bool "Kexec system call"
2829 select KEXEC_CORE
2830 help
2831 kexec is a system call that implements the ability to shutdown your
2832 current kernel, and to start another kernel. It is like a reboot
2833 but it is independent of the system firmware. And like a reboot
2834 you can start any kernel with it, not just Linux.
2835
2836 The name comes from the similarity to the exec system call.
2837
2838 It is an ongoing process to be certain the hardware in a machine
2839 is properly shutdown, so do not be surprised if this code does not
2840 initially work for you. As of this writing the exact hardware
2841 interface is strongly in flux, so no good recommendation can be
2842 made.
2843
2844config CRASH_DUMP
2845 bool "Kernel crash dumps"
2846 help
2847 Generate crash dump after being started by kexec.
2848 This should be normally only set in special crash dump kernels
2849 which are loaded in the main kernel with kexec-tools into
2850 a specially reserved region and then later executed after
2851 a crash by kdump/kexec. The crash dump kernel must be compiled
2852 to a memory address not used by the main kernel or firmware using
2853 PHYSICAL_START.
2854
2855config PHYSICAL_START
2856 hex "Physical address where the kernel is loaded"
2857 default "0xffffffff84000000"
2858 depends on CRASH_DUMP
2859 help
2860 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2861 If you plan to use kernel for capturing the crash dump change
2862 this value to start of the reserved region (the "X" value as
2863 specified in the "crashkernel=YM@XM" command line boot parameter
2864 passed to the panic-ed kernel).
2865
2866config SECCOMP
2867 bool "Enable seccomp to safely compute untrusted bytecode"
2868 depends on PROC_FS
2869 default y
2870 help
2871 This kernel feature is useful for number crunching applications
2872 that may need to compute untrusted bytecode during their
2873 execution. By using pipes or other transports made available to
2874 the process as file descriptors supporting the read/write
2875 syscalls, it's possible to isolate those applications in
2876 their own address space using seccomp. Once seccomp is
2877 enabled via /proc/<pid>/seccomp, it cannot be disabled
2878 and the task is only allowed to execute a few safe syscalls
2879 defined by each seccomp mode.
2880
2881 If unsure, say Y. Only embedded should say N here.
2882
2883config MIPS_O32_FP64_SUPPORT
2884 bool "Support for O32 binaries using 64-bit FP"
2885 depends on 32BIT || MIPS32_O32
2886 help
2887 When this is enabled, the kernel will support use of 64-bit floating
2888 point registers with binaries using the O32 ABI along with the
2889 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2890 32-bit MIPS systems this support is at the cost of increasing the
2891 size and complexity of the compiled FPU emulator. Thus if you are
2892 running a MIPS32 system and know that none of your userland binaries
2893 will require 64-bit floating point, you may wish to reduce the size
2894 of your kernel & potentially improve FP emulation performance by
2895 saying N here.
2896
2897 Although binutils currently supports use of this flag the details
2898 concerning its effect upon the O32 ABI in userland are still being
2899 worked on. In order to avoid userland becoming dependant upon current
2900 behaviour before the details have been finalised, this option should
2901 be considered experimental and only enabled by those working upon
2902 said details.
2903
2904 If unsure, say N.
2905
2906config USE_OF
2907 bool
2908 select OF
2909 select OF_EARLY_FLATTREE
2910 select IRQ_DOMAIN
2911
2912config BUILTIN_DTB
2913 bool
2914
2915choice
2916 prompt "Kernel appended dtb support" if USE_OF
2917 default MIPS_NO_APPENDED_DTB
2918
2919 config MIPS_NO_APPENDED_DTB
2920 bool "None"
2921 help
2922 Do not enable appended dtb support.
2923
2924 config MIPS_ELF_APPENDED_DTB
2925 bool "vmlinux"
2926 help
2927 With this option, the boot code will look for a device tree binary
2928 DTB) included in the vmlinux ELF section .appended_dtb. By default
2929 it is empty and the DTB can be appended using binutils command
2930 objcopy:
2931
2932 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2933
2934 This is meant as a backward compatiblity convenience for those
2935 systems with a bootloader that can't be upgraded to accommodate
2936 the documented boot protocol using a device tree.
2937
2938 config MIPS_RAW_APPENDED_DTB
2939 bool "vmlinux.bin or vmlinuz.bin"
2940 help
2941 With this option, the boot code will look for a device tree binary
2942 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2943 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2944
2945 This is meant as a backward compatibility convenience for those
2946 systems with a bootloader that can't be upgraded to accommodate
2947 the documented boot protocol using a device tree.
2948
2949 Beware that there is very little in terms of protection against
2950 this option being confused by leftover garbage in memory that might
2951 look like a DTB header after a reboot if no actual DTB is appended
2952 to vmlinux.bin. Do not leave this option active in a production kernel
2953 if you don't intend to always append a DTB.
2954endchoice
2955
2956choice
2957 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2958 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2959 !MIPS_MALTA && \
2960 !CAVIUM_OCTEON_SOC
2961 default MIPS_CMDLINE_FROM_BOOTLOADER
2962
2963 config MIPS_CMDLINE_FROM_DTB
2964 depends on USE_OF
2965 bool "Dtb kernel arguments if available"
2966
2967 config MIPS_CMDLINE_DTB_EXTEND
2968 depends on USE_OF
2969 bool "Extend dtb kernel arguments with bootloader arguments"
2970
2971 config MIPS_CMDLINE_FROM_BOOTLOADER
2972 bool "Bootloader kernel arguments if available"
2973
2974 config MIPS_CMDLINE_BUILTIN_EXTEND
2975 depends on CMDLINE_BOOL
2976 bool "Extend builtin kernel arguments with bootloader arguments"
2977endchoice
2978
2979endmenu
2980
2981config LOCKDEP_SUPPORT
2982 bool
2983 default y
2984
2985config STACKTRACE_SUPPORT
2986 bool
2987 default y
2988
2989config HAVE_LATENCYTOP_SUPPORT
2990 bool
2991 default y
2992
2993config PGTABLE_LEVELS
2994 int
2995 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
2996 default 3 if 64BIT && !PAGE_SIZE_64KB
2997 default 2
2998
2999source "init/Kconfig"
3000
3001source "kernel/Kconfig.freezer"
3002
3003menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3004
3005config HW_HAS_EISA
3006 bool
3007config HW_HAS_PCI
3008 bool
3009
3010config PCI
3011 bool "Support for PCI controller"
3012 depends on HW_HAS_PCI
3013 select PCI_DOMAINS
3014 help
3015 Find out whether you have a PCI motherboard. PCI is the name of a
3016 bus system, i.e. the way the CPU talks to the other stuff inside
3017 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3018 say Y, otherwise N.
3019
3020config HT_PCI
3021 bool "Support for HT-linked PCI"
3022 default y
3023 depends on CPU_LOONGSON3
3024 select PCI
3025 select PCI_DOMAINS
3026 help
3027 Loongson family machines use Hyper-Transport bus for inter-core
3028 connection and device connection. The PCI bus is a subordinate
3029 linked at HT. Choose Y for Loongson-3 based machines.
3030
3031config PCI_DOMAINS
3032 bool
3033
3034config PCI_DOMAINS_GENERIC
3035 bool
3036
3037config PCI_DRIVERS_GENERIC
3038 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3039 bool
3040
3041config PCI_DRIVERS_LEGACY
3042 def_bool !PCI_DRIVERS_GENERIC
3043 select NO_GENERIC_PCI_IOPORT_MAP
3044
3045source "drivers/pci/Kconfig"
3046
3047#
3048# ISA support is now enabled via select. Too many systems still have the one
3049# or other ISA chip on the board that users don't know about so don't expect
3050# users to choose the right thing ...
3051#
3052config ISA
3053 bool
3054
3055config EISA
3056 bool "EISA support"
3057 depends on HW_HAS_EISA
3058 select ISA
3059 select GENERIC_ISA_DMA
3060 ---help---
3061 The Extended Industry Standard Architecture (EISA) bus was
3062 developed as an open alternative to the IBM MicroChannel bus.
3063
3064 The EISA bus provided some of the features of the IBM MicroChannel
3065 bus while maintaining backward compatibility with cards made for
3066 the older ISA bus. The EISA bus saw limited use between 1988 and
3067 1995 when it was made obsolete by the PCI bus.
3068
3069 Say Y here if you are building a kernel for an EISA-based machine.
3070
3071 Otherwise, say N.
3072
3073source "drivers/eisa/Kconfig"
3074
3075config TC
3076 bool "TURBOchannel support"
3077 depends on MACH_DECSTATION
3078 help
3079 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3080 processors. TURBOchannel programming specifications are available
3081 at:
3082 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3083 and:
3084 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3085 Linux driver support status is documented at:
3086 <http://www.linux-mips.org/wiki/DECstation>
3087
3088config MMU
3089 bool
3090 default y
3091
3092config ARCH_MMAP_RND_BITS_MIN
3093 default 12 if 64BIT
3094 default 8
3095
3096config ARCH_MMAP_RND_BITS_MAX
3097 default 18 if 64BIT
3098 default 15
3099
3100config ARCH_MMAP_RND_COMPAT_BITS_MIN
3101 default 8
3102
3103config ARCH_MMAP_RND_COMPAT_BITS_MAX
3104 default 15
3105
3106config I8253
3107 bool
3108 select CLKSRC_I8253
3109 select CLKEVT_I8253
3110 select MIPS_EXTERNAL_TIMER
3111
3112config ZONE_DMA
3113 bool
3114
3115config ZONE_DMA32
3116 bool
3117
3118source "drivers/pcmcia/Kconfig"
3119
3120config RAPIDIO
3121 tristate "RapidIO support"
3122 depends on PCI
3123 default n
3124 help
3125 If you say Y here, the kernel will include drivers and
3126 infrastructure code to support RapidIO interconnect devices.
3127
3128source "drivers/rapidio/Kconfig"
3129
3130endmenu
3131
3132menu "Executable file formats"
3133
3134source "fs/Kconfig.binfmt"
3135
3136config TRAD_SIGNALS
3137 bool
3138
3139config MIPS32_COMPAT
3140 bool
3141
3142config COMPAT
3143 bool
3144
3145config SYSVIPC_COMPAT
3146 bool
3147
3148config MIPS32_O32
3149 bool "Kernel support for o32 binaries"
3150 depends on 64BIT
3151 select ARCH_WANT_OLD_COMPAT_IPC
3152 select COMPAT
3153 select MIPS32_COMPAT
3154 select SYSVIPC_COMPAT if SYSVIPC
3155 help
3156 Select this option if you want to run o32 binaries. These are pure
3157 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3158 existing binaries are in this format.
3159
3160 If unsure, say Y.
3161
3162config MIPS32_N32
3163 bool "Kernel support for n32 binaries"
3164 depends on 64BIT
3165 select COMPAT
3166 select MIPS32_COMPAT
3167 select SYSVIPC_COMPAT if SYSVIPC
3168 help
3169 Select this option if you want to run n32 binaries. These are
3170 64-bit binaries using 32-bit quantities for addressing and certain
3171 data that would normally be 64-bit. They are used in special
3172 cases.
3173
3174 If unsure, say N.
3175
3176config BINFMT_ELF32
3177 bool
3178 default y if MIPS32_O32 || MIPS32_N32
3179 select ELFCORE
3180
3181endmenu
3182
3183menu "Power management options"
3184
3185config ARCH_HIBERNATION_POSSIBLE
3186 def_bool y
3187 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3188
3189config ARCH_SUSPEND_POSSIBLE
3190 def_bool y
3191 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3192
3193source "kernel/power/Kconfig"
3194
3195endmenu
3196
3197config MIPS_EXTERNAL_TIMER
3198 bool
3199
3200menu "CPU Power Management"
3201
3202if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3203source "drivers/cpufreq/Kconfig"
3204endif
3205
3206source "drivers/cpuidle/Kconfig"
3207
3208endmenu
3209
3210source "net/Kconfig"
3211
3212source "drivers/Kconfig"
3213
3214source "drivers/firmware/Kconfig"
3215
3216source "fs/Kconfig"
3217
3218source "arch/mips/Kconfig.debug"
3219
3220source "security/Kconfig"
3221
3222source "crypto/Kconfig"
3223
3224source "lib/Kconfig"
3225
3226source "arch/mips/kvm/Kconfig"
1# SPDX-License-Identifier: GPL-2.0
2config MIPS
3 bool
4 default y
5 select ARCH_32BIT_OFF_T if !64BIT
6 select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
7 select ARCH_HAS_FORTIFY_SOURCE
8 select ARCH_HAS_KCOV
9 select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
10 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
11 select ARCH_HAS_UBSAN_SANITIZE_ALL
12 select ARCH_SUPPORTS_UPROBES
13 select ARCH_USE_BUILTIN_BSWAP
14 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
15 select ARCH_USE_QUEUED_RWLOCKS
16 select ARCH_USE_QUEUED_SPINLOCKS
17 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
18 select ARCH_WANT_IPC_PARSE_VERSION
19 select BUILDTIME_TABLE_SORT
20 select CLONE_BACKWARDS
21 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
22 select CPU_PM if CPU_IDLE
23 select GENERIC_ATOMIC64 if !64BIT
24 select GENERIC_CLOCKEVENTS
25 select GENERIC_CMOS_UPDATE
26 select GENERIC_CPU_AUTOPROBE
27 select GENERIC_GETTIMEOFDAY
28 select GENERIC_IOMAP
29 select GENERIC_IRQ_PROBE
30 select GENERIC_IRQ_SHOW
31 select GENERIC_ISA_DMA if EISA
32 select GENERIC_LIB_ASHLDI3
33 select GENERIC_LIB_ASHRDI3
34 select GENERIC_LIB_CMPDI2
35 select GENERIC_LIB_LSHRDI3
36 select GENERIC_LIB_UCMPDI2
37 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
38 select GENERIC_SMP_IDLE_THREAD
39 select GENERIC_TIME_VSYSCALL
40 select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
41 select HANDLE_DOMAIN_IRQ
42 select HAVE_ARCH_COMPILER_H
43 select HAVE_ARCH_JUMP_LABEL
44 select HAVE_ARCH_KGDB
45 select HAVE_ARCH_MMAP_RND_BITS if MMU
46 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
47 select HAVE_ARCH_SECCOMP_FILTER
48 select HAVE_ARCH_TRACEHOOK
49 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
50 select HAVE_ASM_MODVERSIONS
51 select HAVE_CBPF_JIT if !64BIT && !CPU_MICROMIPS
52 select HAVE_CONTEXT_TRACKING
53 select HAVE_TIF_NOHZ
54 select HAVE_C_RECORDMCOUNT
55 select HAVE_DEBUG_KMEMLEAK
56 select HAVE_DEBUG_STACKOVERFLOW
57 select HAVE_DMA_CONTIGUOUS
58 select HAVE_DYNAMIC_FTRACE
59 select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2
60 select HAVE_EXIT_THREAD
61 select HAVE_FAST_GUP
62 select HAVE_FTRACE_MCOUNT_RECORD
63 select HAVE_FUNCTION_GRAPH_TRACER
64 select HAVE_FUNCTION_TRACER
65 select HAVE_GCC_PLUGINS
66 select HAVE_GENERIC_VDSO
67 select HAVE_IDE
68 select HAVE_IOREMAP_PROT
69 select HAVE_IRQ_EXIT_ON_IRQ_STACK
70 select HAVE_IRQ_TIME_ACCOUNTING
71 select HAVE_KPROBES
72 select HAVE_KRETPROBES
73 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
74 select HAVE_MOD_ARCH_SPECIFIC
75 select HAVE_NMI
76 select HAVE_OPROFILE
77 select HAVE_PERF_EVENTS
78 select HAVE_REGS_AND_STACK_ACCESS_API
79 select HAVE_RSEQ
80 select HAVE_SPARSE_SYSCALL_NR
81 select HAVE_STACKPROTECTOR
82 select HAVE_SYSCALL_TRACEPOINTS
83 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
84 select IRQ_FORCED_THREADING
85 select ISA if EISA
86 select MODULES_USE_ELF_REL if MODULES
87 select MODULES_USE_ELF_RELA if MODULES && 64BIT
88 select PERF_USE_VMALLOC
89 select RTC_LIB
90 select SYSCTL_EXCEPTION_TRACE
91 select VIRT_TO_BUS
92
93config MIPS_FIXUP_BIGPHYS_ADDR
94 bool
95
96menu "Machine selection"
97
98choice
99 prompt "System type"
100 default MIPS_GENERIC
101
102config MIPS_GENERIC
103 bool "Generic board-agnostic MIPS kernel"
104 select BOOT_RAW
105 select BUILTIN_DTB
106 select CEVT_R4K
107 select CLKSRC_MIPS_GIC
108 select COMMON_CLK
109 select CPU_MIPSR2_IRQ_EI
110 select CPU_MIPSR2_IRQ_VI
111 select CSRC_R4K
112 select DMA_PERDEV_COHERENT
113 select HAVE_PCI
114 select IRQ_MIPS_CPU
115 select MIPS_AUTO_PFN_OFFSET
116 select MIPS_CPU_SCACHE
117 select MIPS_GIC
118 select MIPS_L1_CACHE_SHIFT_7
119 select NO_EXCEPT_FILL
120 select PCI_DRIVERS_GENERIC
121 select SMP_UP if SMP
122 select SWAP_IO_SPACE
123 select SYS_HAS_CPU_MIPS32_R1
124 select SYS_HAS_CPU_MIPS32_R2
125 select SYS_HAS_CPU_MIPS32_R6
126 select SYS_HAS_CPU_MIPS64_R1
127 select SYS_HAS_CPU_MIPS64_R2
128 select SYS_HAS_CPU_MIPS64_R6
129 select SYS_SUPPORTS_32BIT_KERNEL
130 select SYS_SUPPORTS_64BIT_KERNEL
131 select SYS_SUPPORTS_BIG_ENDIAN
132 select SYS_SUPPORTS_HIGHMEM
133 select SYS_SUPPORTS_LITTLE_ENDIAN
134 select SYS_SUPPORTS_MICROMIPS
135 select SYS_SUPPORTS_MIPS16
136 select SYS_SUPPORTS_MIPS_CPS
137 select SYS_SUPPORTS_MULTITHREADING
138 select SYS_SUPPORTS_RELOCATABLE
139 select SYS_SUPPORTS_SMARTMIPS
140 select UHI_BOOT
141 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
142 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
143 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
144 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
145 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
146 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
147 select USE_OF
148 help
149 Select this to build a kernel which aims to support multiple boards,
150 generally using a flattened device tree passed from the bootloader
151 using the boot protocol defined in the UHI (Unified Hosting
152 Interface) specification.
153
154config MIPS_ALCHEMY
155 bool "Alchemy processor based machines"
156 select PHYS_ADDR_T_64BIT
157 select CEVT_R4K
158 select CSRC_R4K
159 select IRQ_MIPS_CPU
160 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
161 select MIPS_FIXUP_BIGPHYS_ADDR if PCI
162 select SYS_HAS_CPU_MIPS32_R1
163 select SYS_SUPPORTS_32BIT_KERNEL
164 select SYS_SUPPORTS_APM_EMULATION
165 select GPIOLIB
166 select SYS_SUPPORTS_ZBOOT
167 select COMMON_CLK
168
169config AR7
170 bool "Texas Instruments AR7"
171 select BOOT_ELF32
172 select DMA_NONCOHERENT
173 select CEVT_R4K
174 select CSRC_R4K
175 select IRQ_MIPS_CPU
176 select NO_EXCEPT_FILL
177 select SWAP_IO_SPACE
178 select SYS_HAS_CPU_MIPS32_R1
179 select SYS_HAS_EARLY_PRINTK
180 select SYS_SUPPORTS_32BIT_KERNEL
181 select SYS_SUPPORTS_LITTLE_ENDIAN
182 select SYS_SUPPORTS_MIPS16
183 select SYS_SUPPORTS_ZBOOT_UART16550
184 select GPIOLIB
185 select VLYNQ
186 select HAVE_LEGACY_CLK
187 help
188 Support for the Texas Instruments AR7 System-on-a-Chip
189 family: TNETD7100, 7200 and 7300.
190
191config ATH25
192 bool "Atheros AR231x/AR531x SoC support"
193 select CEVT_R4K
194 select CSRC_R4K
195 select DMA_NONCOHERENT
196 select IRQ_MIPS_CPU
197 select IRQ_DOMAIN
198 select SYS_HAS_CPU_MIPS32_R1
199 select SYS_SUPPORTS_BIG_ENDIAN
200 select SYS_SUPPORTS_32BIT_KERNEL
201 select SYS_HAS_EARLY_PRINTK
202 help
203 Support for Atheros AR231x and Atheros AR531x based boards
204
205config ATH79
206 bool "Atheros AR71XX/AR724X/AR913X based boards"
207 select ARCH_HAS_RESET_CONTROLLER
208 select BOOT_RAW
209 select CEVT_R4K
210 select CSRC_R4K
211 select DMA_NONCOHERENT
212 select GPIOLIB
213 select PINCTRL
214 select COMMON_CLK
215 select IRQ_MIPS_CPU
216 select SYS_HAS_CPU_MIPS32_R2
217 select SYS_HAS_EARLY_PRINTK
218 select SYS_SUPPORTS_32BIT_KERNEL
219 select SYS_SUPPORTS_BIG_ENDIAN
220 select SYS_SUPPORTS_MIPS16
221 select SYS_SUPPORTS_ZBOOT_UART_PROM
222 select USE_OF
223 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
224 help
225 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
226
227config BMIPS_GENERIC
228 bool "Broadcom Generic BMIPS kernel"
229 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
230 select ARCH_HAS_PHYS_TO_DMA
231 select BOOT_RAW
232 select NO_EXCEPT_FILL
233 select USE_OF
234 select CEVT_R4K
235 select CSRC_R4K
236 select SYNC_R4K
237 select COMMON_CLK
238 select BCM6345_L1_IRQ
239 select BCM7038_L1_IRQ
240 select BCM7120_L2_IRQ
241 select BRCMSTB_L2_IRQ
242 select IRQ_MIPS_CPU
243 select DMA_NONCOHERENT
244 select SYS_SUPPORTS_32BIT_KERNEL
245 select SYS_SUPPORTS_LITTLE_ENDIAN
246 select SYS_SUPPORTS_BIG_ENDIAN
247 select SYS_SUPPORTS_HIGHMEM
248 select SYS_HAS_CPU_BMIPS32_3300
249 select SYS_HAS_CPU_BMIPS4350
250 select SYS_HAS_CPU_BMIPS4380
251 select SYS_HAS_CPU_BMIPS5000
252 select SWAP_IO_SPACE
253 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
254 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
255 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
256 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
257 select HARDIRQS_SW_RESEND
258 help
259 Build a generic DT-based kernel image that boots on select
260 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
261 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
262 must be set appropriately for your board.
263
264config BCM47XX
265 bool "Broadcom BCM47XX based boards"
266 select BOOT_RAW
267 select CEVT_R4K
268 select CSRC_R4K
269 select DMA_NONCOHERENT
270 select HAVE_PCI
271 select IRQ_MIPS_CPU
272 select SYS_HAS_CPU_MIPS32_R1
273 select NO_EXCEPT_FILL
274 select SYS_SUPPORTS_32BIT_KERNEL
275 select SYS_SUPPORTS_LITTLE_ENDIAN
276 select SYS_SUPPORTS_MIPS16
277 select SYS_SUPPORTS_ZBOOT
278 select SYS_HAS_EARLY_PRINTK
279 select USE_GENERIC_EARLY_PRINTK_8250
280 select GPIOLIB
281 select LEDS_GPIO_REGISTER
282 select BCM47XX_NVRAM
283 select BCM47XX_SPROM
284 select BCM47XX_SSB if !BCM47XX_BCMA
285 help
286 Support for BCM47XX based boards
287
288config BCM63XX
289 bool "Broadcom BCM63XX based boards"
290 select BOOT_RAW
291 select CEVT_R4K
292 select CSRC_R4K
293 select SYNC_R4K
294 select DMA_NONCOHERENT
295 select IRQ_MIPS_CPU
296 select SYS_SUPPORTS_32BIT_KERNEL
297 select SYS_SUPPORTS_BIG_ENDIAN
298 select SYS_HAS_EARLY_PRINTK
299 select SWAP_IO_SPACE
300 select GPIOLIB
301 select MIPS_L1_CACHE_SHIFT_4
302 select CLKDEV_LOOKUP
303 select HAVE_LEGACY_CLK
304 help
305 Support for BCM63XX based boards
306
307config MIPS_COBALT
308 bool "Cobalt Server"
309 select CEVT_R4K
310 select CSRC_R4K
311 select CEVT_GT641XX
312 select DMA_NONCOHERENT
313 select FORCE_PCI
314 select I8253
315 select I8259
316 select IRQ_MIPS_CPU
317 select IRQ_GT641XX
318 select PCI_GT64XXX_PCI0
319 select SYS_HAS_CPU_NEVADA
320 select SYS_HAS_EARLY_PRINTK
321 select SYS_SUPPORTS_32BIT_KERNEL
322 select SYS_SUPPORTS_64BIT_KERNEL
323 select SYS_SUPPORTS_LITTLE_ENDIAN
324 select USE_GENERIC_EARLY_PRINTK_8250
325
326config MACH_DECSTATION
327 bool "DECstations"
328 select BOOT_ELF32
329 select CEVT_DS1287
330 select CEVT_R4K if CPU_R4X00
331 select CSRC_IOASIC
332 select CSRC_R4K if CPU_R4X00
333 select CPU_DADDI_WORKAROUNDS if 64BIT
334 select CPU_R4000_WORKAROUNDS if 64BIT
335 select CPU_R4400_WORKAROUNDS if 64BIT
336 select DMA_NONCOHERENT
337 select NO_IOPORT_MAP
338 select IRQ_MIPS_CPU
339 select SYS_HAS_CPU_R3000
340 select SYS_HAS_CPU_R4X00
341 select SYS_SUPPORTS_32BIT_KERNEL
342 select SYS_SUPPORTS_64BIT_KERNEL
343 select SYS_SUPPORTS_LITTLE_ENDIAN
344 select SYS_SUPPORTS_128HZ
345 select SYS_SUPPORTS_256HZ
346 select SYS_SUPPORTS_1024HZ
347 select MIPS_L1_CACHE_SHIFT_4
348 help
349 This enables support for DEC's MIPS based workstations. For details
350 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
351 DECstation porting pages on <http://decstation.unix-ag.org/>.
352
353 If you have one of the following DECstation Models you definitely
354 want to choose R4xx0 for the CPU Type:
355
356 DECstation 5000/50
357 DECstation 5000/150
358 DECstation 5000/260
359 DECsystem 5900/260
360
361 otherwise choose R3000.
362
363config MACH_JAZZ
364 bool "Jazz family of machines"
365 select ARC_MEMORY
366 select ARC_PROMLIB
367 select ARCH_MIGHT_HAVE_PC_PARPORT
368 select ARCH_MIGHT_HAVE_PC_SERIO
369 select DMA_OPS
370 select FW_ARC
371 select FW_ARC32
372 select ARCH_MAY_HAVE_PC_FDC
373 select CEVT_R4K
374 select CSRC_R4K
375 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
376 select GENERIC_ISA_DMA
377 select HAVE_PCSPKR_PLATFORM
378 select IRQ_MIPS_CPU
379 select I8253
380 select I8259
381 select ISA
382 select SYS_HAS_CPU_R4X00
383 select SYS_SUPPORTS_32BIT_KERNEL
384 select SYS_SUPPORTS_64BIT_KERNEL
385 select SYS_SUPPORTS_100HZ
386 help
387 This a family of machines based on the MIPS R4030 chipset which was
388 used by several vendors to build RISC/os and Windows NT workstations.
389 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
390 Olivetti M700-10 workstations.
391
392config MACH_INGENIC
393 bool "Ingenic SoC based machines"
394 select SYS_SUPPORTS_32BIT_KERNEL
395 select SYS_SUPPORTS_LITTLE_ENDIAN
396 select SYS_SUPPORTS_ZBOOT_UART16550
397 select CPU_SUPPORTS_HUGEPAGES
398 select DMA_NONCOHERENT
399 select IRQ_MIPS_CPU
400 select PINCTRL
401 select GPIOLIB
402 select COMMON_CLK
403 select GENERIC_IRQ_CHIP
404 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
405 select USE_OF
406
407config LANTIQ
408 bool "Lantiq based platforms"
409 select DMA_NONCOHERENT
410 select IRQ_MIPS_CPU
411 select CEVT_R4K
412 select CSRC_R4K
413 select SYS_HAS_CPU_MIPS32_R1
414 select SYS_HAS_CPU_MIPS32_R2
415 select SYS_SUPPORTS_BIG_ENDIAN
416 select SYS_SUPPORTS_32BIT_KERNEL
417 select SYS_SUPPORTS_MIPS16
418 select SYS_SUPPORTS_MULTITHREADING
419 select SYS_SUPPORTS_VPE_LOADER
420 select SYS_HAS_EARLY_PRINTK
421 select GPIOLIB
422 select SWAP_IO_SPACE
423 select BOOT_RAW
424 select CLKDEV_LOOKUP
425 select HAVE_LEGACY_CLK
426 select USE_OF
427 select PINCTRL
428 select PINCTRL_LANTIQ
429 select ARCH_HAS_RESET_CONTROLLER
430 select RESET_CONTROLLER
431
432config MACH_LOONGSON32
433 bool "Loongson 32-bit family of machines"
434 select SYS_SUPPORTS_ZBOOT
435 help
436 This enables support for the Loongson-1 family of machines.
437
438 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
439 the Institute of Computing Technology (ICT), Chinese Academy of
440 Sciences (CAS).
441
442config MACH_LOONGSON2EF
443 bool "Loongson-2E/F family of machines"
444 select SYS_SUPPORTS_ZBOOT
445 help
446 This enables the support of early Loongson-2E/F family of machines.
447
448config MACH_LOONGSON64
449 bool "Loongson 64-bit family of machines"
450 select ARCH_SPARSEMEM_ENABLE
451 select ARCH_MIGHT_HAVE_PC_PARPORT
452 select ARCH_MIGHT_HAVE_PC_SERIO
453 select GENERIC_ISA_DMA_SUPPORT_BROKEN
454 select BOOT_ELF32
455 select BOARD_SCACHE
456 select CSRC_R4K
457 select CEVT_R4K
458 select CPU_HAS_WB
459 select FORCE_PCI
460 select ISA
461 select I8259
462 select IRQ_MIPS_CPU
463 select NO_EXCEPT_FILL
464 select NR_CPUS_DEFAULT_64
465 select USE_GENERIC_EARLY_PRINTK_8250
466 select PCI_DRIVERS_GENERIC
467 select SYS_HAS_CPU_LOONGSON64
468 select SYS_HAS_EARLY_PRINTK
469 select SYS_SUPPORTS_SMP
470 select SYS_SUPPORTS_HOTPLUG_CPU
471 select SYS_SUPPORTS_NUMA
472 select SYS_SUPPORTS_64BIT_KERNEL
473 select SYS_SUPPORTS_HIGHMEM
474 select SYS_SUPPORTS_LITTLE_ENDIAN
475 select SYS_SUPPORTS_ZBOOT
476 select ZONE_DMA32
477 select NUMA
478 select COMMON_CLK
479 select USE_OF
480 select BUILTIN_DTB
481 select PCI_HOST_GENERIC
482 help
483 This enables the support of Loongson-2/3 family of machines.
484
485 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
486 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
487 and Loongson-2F which will be removed), developed by the Institute
488 of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
489
490config MACH_PISTACHIO
491 bool "IMG Pistachio SoC based boards"
492 select BOOT_ELF32
493 select BOOT_RAW
494 select CEVT_R4K
495 select CLKSRC_MIPS_GIC
496 select COMMON_CLK
497 select CSRC_R4K
498 select DMA_NONCOHERENT
499 select GPIOLIB
500 select IRQ_MIPS_CPU
501 select MFD_SYSCON
502 select MIPS_CPU_SCACHE
503 select MIPS_GIC
504 select PINCTRL
505 select REGULATOR
506 select SYS_HAS_CPU_MIPS32_R2
507 select SYS_SUPPORTS_32BIT_KERNEL
508 select SYS_SUPPORTS_LITTLE_ENDIAN
509 select SYS_SUPPORTS_MIPS_CPS
510 select SYS_SUPPORTS_MULTITHREADING
511 select SYS_SUPPORTS_RELOCATABLE
512 select SYS_SUPPORTS_ZBOOT
513 select SYS_HAS_EARLY_PRINTK
514 select USE_GENERIC_EARLY_PRINTK_8250
515 select USE_OF
516 help
517 This enables support for the IMG Pistachio SoC platform.
518
519config MIPS_MALTA
520 bool "MIPS Malta board"
521 select ARCH_MAY_HAVE_PC_FDC
522 select ARCH_MIGHT_HAVE_PC_PARPORT
523 select ARCH_MIGHT_HAVE_PC_SERIO
524 select BOOT_ELF32
525 select BOOT_RAW
526 select BUILTIN_DTB
527 select CEVT_R4K
528 select CLKSRC_MIPS_GIC
529 select COMMON_CLK
530 select CSRC_R4K
531 select DMA_MAYBE_COHERENT
532 select GENERIC_ISA_DMA
533 select HAVE_PCSPKR_PLATFORM
534 select HAVE_PCI
535 select I8253
536 select I8259
537 select IRQ_MIPS_CPU
538 select MIPS_BONITO64
539 select MIPS_CPU_SCACHE
540 select MIPS_GIC
541 select MIPS_L1_CACHE_SHIFT_6
542 select MIPS_MSC
543 select PCI_GT64XXX_PCI0
544 select SMP_UP if SMP
545 select SWAP_IO_SPACE
546 select SYS_HAS_CPU_MIPS32_R1
547 select SYS_HAS_CPU_MIPS32_R2
548 select SYS_HAS_CPU_MIPS32_R3_5
549 select SYS_HAS_CPU_MIPS32_R5
550 select SYS_HAS_CPU_MIPS32_R6
551 select SYS_HAS_CPU_MIPS64_R1
552 select SYS_HAS_CPU_MIPS64_R2
553 select SYS_HAS_CPU_MIPS64_R6
554 select SYS_HAS_CPU_NEVADA
555 select SYS_HAS_CPU_RM7000
556 select SYS_SUPPORTS_32BIT_KERNEL
557 select SYS_SUPPORTS_64BIT_KERNEL
558 select SYS_SUPPORTS_BIG_ENDIAN
559 select SYS_SUPPORTS_HIGHMEM
560 select SYS_SUPPORTS_LITTLE_ENDIAN
561 select SYS_SUPPORTS_MICROMIPS
562 select SYS_SUPPORTS_MIPS16
563 select SYS_SUPPORTS_MIPS_CMP
564 select SYS_SUPPORTS_MIPS_CPS
565 select SYS_SUPPORTS_MULTITHREADING
566 select SYS_SUPPORTS_RELOCATABLE
567 select SYS_SUPPORTS_SMARTMIPS
568 select SYS_SUPPORTS_VPE_LOADER
569 select SYS_SUPPORTS_ZBOOT
570 select USE_OF
571 select ZONE_DMA32 if 64BIT
572 help
573 This enables support for the MIPS Technologies Malta evaluation
574 board.
575
576config MACH_PIC32
577 bool "Microchip PIC32 Family"
578 help
579 This enables support for the Microchip PIC32 family of platforms.
580
581 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
582 microcontrollers.
583
584config MACH_VR41XX
585 bool "NEC VR4100 series based machines"
586 select CEVT_R4K
587 select CSRC_R4K
588 select SYS_HAS_CPU_VR41XX
589 select SYS_SUPPORTS_MIPS16
590 select GPIOLIB
591
592config NXP_STB220
593 bool "NXP STB220 board"
594 select SOC_PNX833X
595 help
596 Support for NXP Semiconductors STB220 Development Board.
597
598config NXP_STB225
599 bool "NXP 225 board"
600 select SOC_PNX833X
601 select SOC_PNX8335
602 help
603 Support for NXP Semiconductors STB225 Development Board.
604
605config RALINK
606 bool "Ralink based machines"
607 select CEVT_R4K
608 select CSRC_R4K
609 select BOOT_RAW
610 select DMA_NONCOHERENT
611 select IRQ_MIPS_CPU
612 select USE_OF
613 select SYS_HAS_CPU_MIPS32_R1
614 select SYS_HAS_CPU_MIPS32_R2
615 select SYS_SUPPORTS_32BIT_KERNEL
616 select SYS_SUPPORTS_LITTLE_ENDIAN
617 select SYS_SUPPORTS_MIPS16
618 select SYS_HAS_EARLY_PRINTK
619 select CLKDEV_LOOKUP
620 select ARCH_HAS_RESET_CONTROLLER
621 select RESET_CONTROLLER
622
623config SGI_IP22
624 bool "SGI IP22 (Indy/Indigo2)"
625 select ARC_MEMORY
626 select ARC_PROMLIB
627 select FW_ARC
628 select FW_ARC32
629 select ARCH_MIGHT_HAVE_PC_SERIO
630 select BOOT_ELF32
631 select CEVT_R4K
632 select CSRC_R4K
633 select DEFAULT_SGI_PARTITION
634 select DMA_NONCOHERENT
635 select HAVE_EISA
636 select I8253
637 select I8259
638 select IP22_CPU_SCACHE
639 select IRQ_MIPS_CPU
640 select GENERIC_ISA_DMA_SUPPORT_BROKEN
641 select SGI_HAS_I8042
642 select SGI_HAS_INDYDOG
643 select SGI_HAS_HAL2
644 select SGI_HAS_SEEQ
645 select SGI_HAS_WD93
646 select SGI_HAS_ZILOG
647 select SWAP_IO_SPACE
648 select SYS_HAS_CPU_R4X00
649 select SYS_HAS_CPU_R5000
650 select SYS_HAS_EARLY_PRINTK
651 select SYS_SUPPORTS_32BIT_KERNEL
652 select SYS_SUPPORTS_64BIT_KERNEL
653 select SYS_SUPPORTS_BIG_ENDIAN
654 select MIPS_L1_CACHE_SHIFT_7
655 help
656 This are the SGI Indy, Challenge S and Indigo2, as well as certain
657 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
658 that runs on these, say Y here.
659
660config SGI_IP27
661 bool "SGI IP27 (Origin200/2000)"
662 select ARCH_HAS_PHYS_TO_DMA
663 select ARCH_SPARSEMEM_ENABLE
664 select FW_ARC
665 select FW_ARC64
666 select ARC_CMDLINE_ONLY
667 select BOOT_ELF64
668 select DEFAULT_SGI_PARTITION
669 select SYS_HAS_EARLY_PRINTK
670 select HAVE_PCI
671 select IRQ_MIPS_CPU
672 select IRQ_DOMAIN_HIERARCHY
673 select NR_CPUS_DEFAULT_64
674 select PCI_DRIVERS_GENERIC
675 select PCI_XTALK_BRIDGE
676 select SYS_HAS_CPU_R10000
677 select SYS_SUPPORTS_64BIT_KERNEL
678 select SYS_SUPPORTS_BIG_ENDIAN
679 select SYS_SUPPORTS_NUMA
680 select SYS_SUPPORTS_SMP
681 select MIPS_L1_CACHE_SHIFT_7
682 select NUMA
683 help
684 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
685 workstations. To compile a Linux kernel that runs on these, say Y
686 here.
687
688config SGI_IP28
689 bool "SGI IP28 (Indigo2 R10k)"
690 select ARC_MEMORY
691 select ARC_PROMLIB
692 select FW_ARC
693 select FW_ARC64
694 select ARCH_MIGHT_HAVE_PC_SERIO
695 select BOOT_ELF64
696 select CEVT_R4K
697 select CSRC_R4K
698 select DEFAULT_SGI_PARTITION
699 select DMA_NONCOHERENT
700 select GENERIC_ISA_DMA_SUPPORT_BROKEN
701 select IRQ_MIPS_CPU
702 select HAVE_EISA
703 select I8253
704 select I8259
705 select SGI_HAS_I8042
706 select SGI_HAS_INDYDOG
707 select SGI_HAS_HAL2
708 select SGI_HAS_SEEQ
709 select SGI_HAS_WD93
710 select SGI_HAS_ZILOG
711 select SWAP_IO_SPACE
712 select SYS_HAS_CPU_R10000
713 select SYS_HAS_EARLY_PRINTK
714 select SYS_SUPPORTS_64BIT_KERNEL
715 select SYS_SUPPORTS_BIG_ENDIAN
716 select MIPS_L1_CACHE_SHIFT_7
717 help
718 This is the SGI Indigo2 with R10000 processor. To compile a Linux
719 kernel that runs on these, say Y here.
720
721config SGI_IP30
722 bool "SGI IP30 (Octane/Octane2)"
723 select ARCH_HAS_PHYS_TO_DMA
724 select FW_ARC
725 select FW_ARC64
726 select BOOT_ELF64
727 select CEVT_R4K
728 select CSRC_R4K
729 select SYNC_R4K if SMP
730 select ZONE_DMA32
731 select HAVE_PCI
732 select IRQ_MIPS_CPU
733 select IRQ_DOMAIN_HIERARCHY
734 select NR_CPUS_DEFAULT_2
735 select PCI_DRIVERS_GENERIC
736 select PCI_XTALK_BRIDGE
737 select SYS_HAS_EARLY_PRINTK
738 select SYS_HAS_CPU_R10000
739 select SYS_SUPPORTS_64BIT_KERNEL
740 select SYS_SUPPORTS_BIG_ENDIAN
741 select SYS_SUPPORTS_SMP
742 select MIPS_L1_CACHE_SHIFT_7
743 select ARC_MEMORY
744 help
745 These are the SGI Octane and Octane2 graphics workstations. To
746 compile a Linux kernel that runs on these, say Y here.
747
748config SGI_IP32
749 bool "SGI IP32 (O2)"
750 select ARC_MEMORY
751 select ARC_PROMLIB
752 select ARCH_HAS_PHYS_TO_DMA
753 select FW_ARC
754 select FW_ARC32
755 select BOOT_ELF32
756 select CEVT_R4K
757 select CSRC_R4K
758 select DMA_NONCOHERENT
759 select HAVE_PCI
760 select IRQ_MIPS_CPU
761 select R5000_CPU_SCACHE
762 select RM7000_CPU_SCACHE
763 select SYS_HAS_CPU_R5000
764 select SYS_HAS_CPU_R10000 if BROKEN
765 select SYS_HAS_CPU_RM7000
766 select SYS_HAS_CPU_NEVADA
767 select SYS_SUPPORTS_64BIT_KERNEL
768 select SYS_SUPPORTS_BIG_ENDIAN
769 help
770 If you want this kernel to run on SGI O2 workstation, say Y here.
771
772config SIBYTE_CRHINE
773 bool "Sibyte BCM91120C-CRhine"
774 select BOOT_ELF32
775 select SIBYTE_BCM1120
776 select SWAP_IO_SPACE
777 select SYS_HAS_CPU_SB1
778 select SYS_SUPPORTS_BIG_ENDIAN
779 select SYS_SUPPORTS_LITTLE_ENDIAN
780
781config SIBYTE_CARMEL
782 bool "Sibyte BCM91120x-Carmel"
783 select BOOT_ELF32
784 select SIBYTE_BCM1120
785 select SWAP_IO_SPACE
786 select SYS_HAS_CPU_SB1
787 select SYS_SUPPORTS_BIG_ENDIAN
788 select SYS_SUPPORTS_LITTLE_ENDIAN
789
790config SIBYTE_CRHONE
791 bool "Sibyte BCM91125C-CRhone"
792 select BOOT_ELF32
793 select SIBYTE_BCM1125
794 select SWAP_IO_SPACE
795 select SYS_HAS_CPU_SB1
796 select SYS_SUPPORTS_BIG_ENDIAN
797 select SYS_SUPPORTS_HIGHMEM
798 select SYS_SUPPORTS_LITTLE_ENDIAN
799
800config SIBYTE_RHONE
801 bool "Sibyte BCM91125E-Rhone"
802 select BOOT_ELF32
803 select SIBYTE_BCM1125H
804 select SWAP_IO_SPACE
805 select SYS_HAS_CPU_SB1
806 select SYS_SUPPORTS_BIG_ENDIAN
807 select SYS_SUPPORTS_LITTLE_ENDIAN
808
809config SIBYTE_SWARM
810 bool "Sibyte BCM91250A-SWARM"
811 select BOOT_ELF32
812 select HAVE_PATA_PLATFORM
813 select SIBYTE_SB1250
814 select SWAP_IO_SPACE
815 select SYS_HAS_CPU_SB1
816 select SYS_SUPPORTS_BIG_ENDIAN
817 select SYS_SUPPORTS_HIGHMEM
818 select SYS_SUPPORTS_LITTLE_ENDIAN
819 select ZONE_DMA32 if 64BIT
820 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
821
822config SIBYTE_LITTLESUR
823 bool "Sibyte BCM91250C2-LittleSur"
824 select BOOT_ELF32
825 select HAVE_PATA_PLATFORM
826 select SIBYTE_SB1250
827 select SWAP_IO_SPACE
828 select SYS_HAS_CPU_SB1
829 select SYS_SUPPORTS_BIG_ENDIAN
830 select SYS_SUPPORTS_HIGHMEM
831 select SYS_SUPPORTS_LITTLE_ENDIAN
832 select ZONE_DMA32 if 64BIT
833
834config SIBYTE_SENTOSA
835 bool "Sibyte BCM91250E-Sentosa"
836 select BOOT_ELF32
837 select SIBYTE_SB1250
838 select SWAP_IO_SPACE
839 select SYS_HAS_CPU_SB1
840 select SYS_SUPPORTS_BIG_ENDIAN
841 select SYS_SUPPORTS_LITTLE_ENDIAN
842 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
843
844config SIBYTE_BIGSUR
845 bool "Sibyte BCM91480B-BigSur"
846 select BOOT_ELF32
847 select NR_CPUS_DEFAULT_4
848 select SIBYTE_BCM1x80
849 select SWAP_IO_SPACE
850 select SYS_HAS_CPU_SB1
851 select SYS_SUPPORTS_BIG_ENDIAN
852 select SYS_SUPPORTS_HIGHMEM
853 select SYS_SUPPORTS_LITTLE_ENDIAN
854 select ZONE_DMA32 if 64BIT
855 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
856
857config SNI_RM
858 bool "SNI RM200/300/400"
859 select ARC_MEMORY
860 select ARC_PROMLIB
861 select FW_ARC if CPU_LITTLE_ENDIAN
862 select FW_ARC32 if CPU_LITTLE_ENDIAN
863 select FW_SNIPROM if CPU_BIG_ENDIAN
864 select ARCH_MAY_HAVE_PC_FDC
865 select ARCH_MIGHT_HAVE_PC_PARPORT
866 select ARCH_MIGHT_HAVE_PC_SERIO
867 select BOOT_ELF32
868 select CEVT_R4K
869 select CSRC_R4K
870 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
871 select DMA_NONCOHERENT
872 select GENERIC_ISA_DMA
873 select HAVE_EISA
874 select HAVE_PCSPKR_PLATFORM
875 select HAVE_PCI
876 select IRQ_MIPS_CPU
877 select I8253
878 select I8259
879 select ISA
880 select MIPS_L1_CACHE_SHIFT_6
881 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
882 select SYS_HAS_CPU_R4X00
883 select SYS_HAS_CPU_R5000
884 select SYS_HAS_CPU_R10000
885 select R5000_CPU_SCACHE
886 select SYS_HAS_EARLY_PRINTK
887 select SYS_SUPPORTS_32BIT_KERNEL
888 select SYS_SUPPORTS_64BIT_KERNEL
889 select SYS_SUPPORTS_BIG_ENDIAN
890 select SYS_SUPPORTS_HIGHMEM
891 select SYS_SUPPORTS_LITTLE_ENDIAN
892 help
893 The SNI RM200/300/400 are MIPS-based machines manufactured by
894 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
895 Technology and now in turn merged with Fujitsu. Say Y here to
896 support this machine type.
897
898config MACH_TX39XX
899 bool "Toshiba TX39 series based machines"
900
901config MACH_TX49XX
902 bool "Toshiba TX49 series based machines"
903
904config MIKROTIK_RB532
905 bool "Mikrotik RB532 boards"
906 select CEVT_R4K
907 select CSRC_R4K
908 select DMA_NONCOHERENT
909 select HAVE_PCI
910 select IRQ_MIPS_CPU
911 select SYS_HAS_CPU_MIPS32_R1
912 select SYS_SUPPORTS_32BIT_KERNEL
913 select SYS_SUPPORTS_LITTLE_ENDIAN
914 select SWAP_IO_SPACE
915 select BOOT_RAW
916 select GPIOLIB
917 select MIPS_L1_CACHE_SHIFT_4
918 help
919 Support the Mikrotik(tm) RouterBoard 532 series,
920 based on the IDT RC32434 SoC.
921
922config CAVIUM_OCTEON_SOC
923 bool "Cavium Networks Octeon SoC based boards"
924 select CEVT_R4K
925 select ARCH_HAS_PHYS_TO_DMA
926 select HAVE_RAPIDIO
927 select PHYS_ADDR_T_64BIT
928 select SYS_SUPPORTS_64BIT_KERNEL
929 select SYS_SUPPORTS_BIG_ENDIAN
930 select EDAC_SUPPORT
931 select EDAC_ATOMIC_SCRUB
932 select SYS_SUPPORTS_LITTLE_ENDIAN
933 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
934 select SYS_HAS_EARLY_PRINTK
935 select SYS_HAS_CPU_CAVIUM_OCTEON
936 select HAVE_PCI
937 select HAVE_PLAT_DELAY
938 select HAVE_PLAT_FW_INIT_CMDLINE
939 select HAVE_PLAT_MEMCPY
940 select ZONE_DMA32
941 select HOLES_IN_ZONE
942 select GPIOLIB
943 select USE_OF
944 select ARCH_SPARSEMEM_ENABLE
945 select SYS_SUPPORTS_SMP
946 select NR_CPUS_DEFAULT_64
947 select MIPS_NR_CPU_NR_MAP_1024
948 select BUILTIN_DTB
949 select MTD_COMPLEX_MAPPINGS
950 select SWIOTLB
951 select SYS_SUPPORTS_RELOCATABLE
952 help
953 This option supports all of the Octeon reference boards from Cavium
954 Networks. It builds a kernel that dynamically determines the Octeon
955 CPU type and supports all known board reference implementations.
956 Some of the supported boards are:
957 EBT3000
958 EBH3000
959 EBH3100
960 Thunder
961 Kodama
962 Hikari
963 Say Y here for most Octeon reference boards.
964
965config NLM_XLR_BOARD
966 bool "Netlogic XLR/XLS based systems"
967 select BOOT_ELF32
968 select NLM_COMMON
969 select SYS_HAS_CPU_XLR
970 select SYS_SUPPORTS_SMP
971 select HAVE_PCI
972 select SWAP_IO_SPACE
973 select SYS_SUPPORTS_32BIT_KERNEL
974 select SYS_SUPPORTS_64BIT_KERNEL
975 select PHYS_ADDR_T_64BIT
976 select SYS_SUPPORTS_BIG_ENDIAN
977 select SYS_SUPPORTS_HIGHMEM
978 select NR_CPUS_DEFAULT_32
979 select CEVT_R4K
980 select CSRC_R4K
981 select IRQ_MIPS_CPU
982 select ZONE_DMA32 if 64BIT
983 select SYNC_R4K
984 select SYS_HAS_EARLY_PRINTK
985 select SYS_SUPPORTS_ZBOOT
986 select SYS_SUPPORTS_ZBOOT_UART16550
987 help
988 Support for systems based on Netlogic XLR and XLS processors.
989 Say Y here if you have a XLR or XLS based board.
990
991config NLM_XLP_BOARD
992 bool "Netlogic XLP based systems"
993 select BOOT_ELF32
994 select NLM_COMMON
995 select SYS_HAS_CPU_XLP
996 select SYS_SUPPORTS_SMP
997 select HAVE_PCI
998 select SYS_SUPPORTS_32BIT_KERNEL
999 select SYS_SUPPORTS_64BIT_KERNEL
1000 select PHYS_ADDR_T_64BIT
1001 select GPIOLIB
1002 select SYS_SUPPORTS_BIG_ENDIAN
1003 select SYS_SUPPORTS_LITTLE_ENDIAN
1004 select SYS_SUPPORTS_HIGHMEM
1005 select NR_CPUS_DEFAULT_32
1006 select CEVT_R4K
1007 select CSRC_R4K
1008 select IRQ_MIPS_CPU
1009 select ZONE_DMA32 if 64BIT
1010 select SYNC_R4K
1011 select SYS_HAS_EARLY_PRINTK
1012 select USE_OF
1013 select SYS_SUPPORTS_ZBOOT
1014 select SYS_SUPPORTS_ZBOOT_UART16550
1015 help
1016 This board is based on Netlogic XLP Processor.
1017 Say Y here if you have a XLP based board.
1018
1019endchoice
1020
1021source "arch/mips/alchemy/Kconfig"
1022source "arch/mips/ath25/Kconfig"
1023source "arch/mips/ath79/Kconfig"
1024source "arch/mips/bcm47xx/Kconfig"
1025source "arch/mips/bcm63xx/Kconfig"
1026source "arch/mips/bmips/Kconfig"
1027source "arch/mips/generic/Kconfig"
1028source "arch/mips/jazz/Kconfig"
1029source "arch/mips/jz4740/Kconfig"
1030source "arch/mips/lantiq/Kconfig"
1031source "arch/mips/pic32/Kconfig"
1032source "arch/mips/pistachio/Kconfig"
1033source "arch/mips/ralink/Kconfig"
1034source "arch/mips/sgi-ip27/Kconfig"
1035source "arch/mips/sibyte/Kconfig"
1036source "arch/mips/txx9/Kconfig"
1037source "arch/mips/vr41xx/Kconfig"
1038source "arch/mips/cavium-octeon/Kconfig"
1039source "arch/mips/loongson2ef/Kconfig"
1040source "arch/mips/loongson32/Kconfig"
1041source "arch/mips/loongson64/Kconfig"
1042source "arch/mips/netlogic/Kconfig"
1043
1044endmenu
1045
1046config GENERIC_HWEIGHT
1047 bool
1048 default y
1049
1050config GENERIC_CALIBRATE_DELAY
1051 bool
1052 default y
1053
1054config SCHED_OMIT_FRAME_POINTER
1055 bool
1056 default y
1057
1058#
1059# Select some configuration options automatically based on user selections.
1060#
1061config FW_ARC
1062 bool
1063
1064config ARCH_MAY_HAVE_PC_FDC
1065 bool
1066
1067config BOOT_RAW
1068 bool
1069
1070config CEVT_BCM1480
1071 bool
1072
1073config CEVT_DS1287
1074 bool
1075
1076config CEVT_GT641XX
1077 bool
1078
1079config CEVT_R4K
1080 bool
1081
1082config CEVT_SB1250
1083 bool
1084
1085config CEVT_TXX9
1086 bool
1087
1088config CSRC_BCM1480
1089 bool
1090
1091config CSRC_IOASIC
1092 bool
1093
1094config CSRC_R4K
1095 select CLOCKSOURCE_WATCHDOG if CPU_FREQ
1096 bool
1097
1098config CSRC_SB1250
1099 bool
1100
1101config MIPS_CLOCK_VSYSCALL
1102 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1103
1104config GPIO_TXX9
1105 select GPIOLIB
1106 bool
1107
1108config FW_CFE
1109 bool
1110
1111config ARCH_SUPPORTS_UPROBES
1112 bool
1113
1114config DMA_MAYBE_COHERENT
1115 select ARCH_HAS_DMA_COHERENCE_H
1116 select DMA_NONCOHERENT
1117 bool
1118
1119config DMA_PERDEV_COHERENT
1120 bool
1121 select ARCH_HAS_SETUP_DMA_OPS
1122 select DMA_NONCOHERENT
1123
1124config DMA_NONCOHERENT
1125 bool
1126 #
1127 # MIPS allows mixing "slightly different" Cacheability and Coherency
1128 # Attribute bits. It is believed that the uncached access through
1129 # KSEG1 and the implementation specific "uncached accelerated" used
1130 # by pgprot_writcombine can be mixed, and the latter sometimes provides
1131 # significant advantages.
1132 #
1133 select ARCH_HAS_DMA_WRITE_COMBINE
1134 select ARCH_HAS_DMA_PREP_COHERENT
1135 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1136 select ARCH_HAS_DMA_SET_UNCACHED
1137 select DMA_NONCOHERENT_MMAP
1138 select DMA_NONCOHERENT_CACHE_SYNC
1139 select NEED_DMA_MAP_STATE
1140
1141config SYS_HAS_EARLY_PRINTK
1142 bool
1143
1144config SYS_SUPPORTS_HOTPLUG_CPU
1145 bool
1146
1147config MIPS_BONITO64
1148 bool
1149
1150config MIPS_MSC
1151 bool
1152
1153config SYNC_R4K
1154 bool
1155
1156config NO_IOPORT_MAP
1157 def_bool n
1158
1159config GENERIC_CSUM
1160 def_bool CPU_NO_LOAD_STORE_LR
1161
1162config GENERIC_ISA_DMA
1163 bool
1164 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1165 select ISA_DMA_API
1166
1167config GENERIC_ISA_DMA_SUPPORT_BROKEN
1168 bool
1169 select GENERIC_ISA_DMA
1170
1171config HAVE_PLAT_DELAY
1172 bool
1173
1174config HAVE_PLAT_FW_INIT_CMDLINE
1175 bool
1176
1177config HAVE_PLAT_MEMCPY
1178 bool
1179
1180config ISA_DMA_API
1181 bool
1182
1183config HOLES_IN_ZONE
1184 bool
1185
1186config SYS_SUPPORTS_RELOCATABLE
1187 bool
1188 help
1189 Selected if the platform supports relocating the kernel.
1190 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1191 to allow access to command line and entropy sources.
1192
1193config MIPS_CBPF_JIT
1194 def_bool y
1195 depends on BPF_JIT && HAVE_CBPF_JIT
1196
1197config MIPS_EBPF_JIT
1198 def_bool y
1199 depends on BPF_JIT && HAVE_EBPF_JIT
1200
1201
1202#
1203# Endianness selection. Sufficiently obscure so many users don't know what to
1204# answer,so we try hard to limit the available choices. Also the use of a
1205# choice statement should be more obvious to the user.
1206#
1207choice
1208 prompt "Endianness selection"
1209 help
1210 Some MIPS machines can be configured for either little or big endian
1211 byte order. These modes require different kernels and a different
1212 Linux distribution. In general there is one preferred byteorder for a
1213 particular system but some systems are just as commonly used in the
1214 one or the other endianness.
1215
1216config CPU_BIG_ENDIAN
1217 bool "Big endian"
1218 depends on SYS_SUPPORTS_BIG_ENDIAN
1219
1220config CPU_LITTLE_ENDIAN
1221 bool "Little endian"
1222 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1223
1224endchoice
1225
1226config EXPORT_UASM
1227 bool
1228
1229config SYS_SUPPORTS_APM_EMULATION
1230 bool
1231
1232config SYS_SUPPORTS_BIG_ENDIAN
1233 bool
1234
1235config SYS_SUPPORTS_LITTLE_ENDIAN
1236 bool
1237
1238config SYS_SUPPORTS_HUGETLBFS
1239 bool
1240 depends on CPU_SUPPORTS_HUGEPAGES
1241 default y
1242
1243config MIPS_HUGE_TLB_SUPPORT
1244 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1245
1246config IRQ_CPU_RM7K
1247 bool
1248
1249config IRQ_MSP_SLP
1250 bool
1251
1252config IRQ_MSP_CIC
1253 bool
1254
1255config IRQ_TXX9
1256 bool
1257
1258config IRQ_GT641XX
1259 bool
1260
1261config PCI_GT64XXX_PCI0
1262 bool
1263
1264config PCI_XTALK_BRIDGE
1265 bool
1266
1267config NO_EXCEPT_FILL
1268 bool
1269
1270config SOC_PNX833X
1271 bool
1272 select CEVT_R4K
1273 select CSRC_R4K
1274 select IRQ_MIPS_CPU
1275 select DMA_NONCOHERENT
1276 select SYS_HAS_CPU_MIPS32_R2
1277 select SYS_SUPPORTS_32BIT_KERNEL
1278 select SYS_SUPPORTS_LITTLE_ENDIAN
1279 select SYS_SUPPORTS_BIG_ENDIAN
1280 select SYS_SUPPORTS_MIPS16
1281 select CPU_MIPSR2_IRQ_VI
1282
1283config SOC_PNX8335
1284 bool
1285 select SOC_PNX833X
1286
1287config MIPS_SPRAM
1288 bool
1289
1290config SWAP_IO_SPACE
1291 bool
1292
1293config SGI_HAS_INDYDOG
1294 bool
1295
1296config SGI_HAS_HAL2
1297 bool
1298
1299config SGI_HAS_SEEQ
1300 bool
1301
1302config SGI_HAS_WD93
1303 bool
1304
1305config SGI_HAS_ZILOG
1306 bool
1307
1308config SGI_HAS_I8042
1309 bool
1310
1311config DEFAULT_SGI_PARTITION
1312 bool
1313
1314config FW_ARC32
1315 bool
1316
1317config FW_SNIPROM
1318 bool
1319
1320config BOOT_ELF32
1321 bool
1322
1323config MIPS_L1_CACHE_SHIFT_4
1324 bool
1325
1326config MIPS_L1_CACHE_SHIFT_5
1327 bool
1328
1329config MIPS_L1_CACHE_SHIFT_6
1330 bool
1331
1332config MIPS_L1_CACHE_SHIFT_7
1333 bool
1334
1335config MIPS_L1_CACHE_SHIFT
1336 int
1337 default "7" if MIPS_L1_CACHE_SHIFT_7
1338 default "6" if MIPS_L1_CACHE_SHIFT_6
1339 default "5" if MIPS_L1_CACHE_SHIFT_5
1340 default "4" if MIPS_L1_CACHE_SHIFT_4
1341 default "5"
1342
1343config ARC_CMDLINE_ONLY
1344 bool
1345
1346config ARC_CONSOLE
1347 bool "ARC console support"
1348 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1349
1350config ARC_MEMORY
1351 bool
1352
1353config ARC_PROMLIB
1354 bool
1355
1356config FW_ARC64
1357 bool
1358
1359config BOOT_ELF64
1360 bool
1361
1362menu "CPU selection"
1363
1364choice
1365 prompt "CPU type"
1366 default CPU_R4X00
1367
1368config CPU_LOONGSON64
1369 bool "Loongson 64-bit CPU"
1370 depends on SYS_HAS_CPU_LOONGSON64
1371 select ARCH_HAS_PHYS_TO_DMA
1372 select CPU_MIPSR2
1373 select CPU_HAS_PREFETCH
1374 select CPU_SUPPORTS_64BIT_KERNEL
1375 select CPU_SUPPORTS_HIGHMEM
1376 select CPU_SUPPORTS_HUGEPAGES
1377 select CPU_SUPPORTS_MSA
1378 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
1379 select CPU_MIPSR2_IRQ_VI
1380 select WEAK_ORDERING
1381 select WEAK_REORDERING_BEYOND_LLSC
1382 select MIPS_ASID_BITS_VARIABLE
1383 select MIPS_PGD_C0_CONTEXT
1384 select MIPS_L1_CACHE_SHIFT_6
1385 select GPIOLIB
1386 select SWIOTLB
1387 select HAVE_KVM
1388 help
1389 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
1390 cores implements the MIPS64R2 instruction set with many extensions,
1391 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
1392 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
1393 Loongson-2E/2F is not covered here and will be removed in future.
1394
1395config LOONGSON3_ENHANCEMENT
1396 bool "New Loongson-3 CPU Enhancements"
1397 default n
1398 depends on CPU_LOONGSON64
1399 help
1400 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
1401 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1402 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
1403 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1404 Fast TLB refill support, etc.
1405
1406 This option enable those enhancements which are not probed at run
1407 time. If you want a generic kernel to run on all Loongson 3 machines,
1408 please say 'N' here. If you want a high-performance kernel to run on
1409 new Loongson-3 machines only, please say 'Y' here.
1410
1411config CPU_LOONGSON3_WORKAROUNDS
1412 bool "Old Loongson-3 LLSC Workarounds"
1413 default y if SMP
1414 depends on CPU_LOONGSON64
1415 help
1416 Loongson-3 processors have the llsc issues which require workarounds.
1417 Without workarounds the system may hang unexpectedly.
1418
1419 Newer Loongson-3 will fix these issues and no workarounds are needed.
1420 The workarounds have no significant side effect on them but may
1421 decrease the performance of the system so this option should be
1422 disabled unless the kernel is intended to be run on old systems.
1423
1424 If unsure, please say Y.
1425
1426config CPU_LOONGSON3_CPUCFG_EMULATION
1427 bool "Emulate the CPUCFG instruction on older Loongson cores"
1428 default y
1429 depends on CPU_LOONGSON64
1430 help
1431 Loongson-3A R4 and newer have the CPUCFG instruction available for
1432 userland to query CPU capabilities, much like CPUID on x86. This
1433 option provides emulation of the instruction on older Loongson
1434 cores, back to Loongson-3A1000.
1435
1436 If unsure, please say Y.
1437
1438config CPU_LOONGSON2E
1439 bool "Loongson 2E"
1440 depends on SYS_HAS_CPU_LOONGSON2E
1441 select CPU_LOONGSON2EF
1442 help
1443 The Loongson 2E processor implements the MIPS III instruction set
1444 with many extensions.
1445
1446 It has an internal FPGA northbridge, which is compatible to
1447 bonito64.
1448
1449config CPU_LOONGSON2F
1450 bool "Loongson 2F"
1451 depends on SYS_HAS_CPU_LOONGSON2F
1452 select CPU_LOONGSON2EF
1453 select GPIOLIB
1454 help
1455 The Loongson 2F processor implements the MIPS III instruction set
1456 with many extensions.
1457
1458 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1459 have a similar programming interface with FPGA northbridge used in
1460 Loongson2E.
1461
1462config CPU_LOONGSON1B
1463 bool "Loongson 1B"
1464 depends on SYS_HAS_CPU_LOONGSON1B
1465 select CPU_LOONGSON32
1466 select LEDS_GPIO_REGISTER
1467 help
1468 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1469 Release 1 instruction set and part of the MIPS32 Release 2
1470 instruction set.
1471
1472config CPU_LOONGSON1C
1473 bool "Loongson 1C"
1474 depends on SYS_HAS_CPU_LOONGSON1C
1475 select CPU_LOONGSON32
1476 select LEDS_GPIO_REGISTER
1477 help
1478 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1479 Release 1 instruction set and part of the MIPS32 Release 2
1480 instruction set.
1481
1482config CPU_MIPS32_R1
1483 bool "MIPS32 Release 1"
1484 depends on SYS_HAS_CPU_MIPS32_R1
1485 select CPU_HAS_PREFETCH
1486 select CPU_SUPPORTS_32BIT_KERNEL
1487 select CPU_SUPPORTS_HIGHMEM
1488 help
1489 Choose this option to build a kernel for release 1 or later of the
1490 MIPS32 architecture. Most modern embedded systems with a 32-bit
1491 MIPS processor are based on a MIPS32 processor. If you know the
1492 specific type of processor in your system, choose those that one
1493 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1494 Release 2 of the MIPS32 architecture is available since several
1495 years so chances are you even have a MIPS32 Release 2 processor
1496 in which case you should choose CPU_MIPS32_R2 instead for better
1497 performance.
1498
1499config CPU_MIPS32_R2
1500 bool "MIPS32 Release 2"
1501 depends on SYS_HAS_CPU_MIPS32_R2
1502 select CPU_HAS_PREFETCH
1503 select CPU_SUPPORTS_32BIT_KERNEL
1504 select CPU_SUPPORTS_HIGHMEM
1505 select CPU_SUPPORTS_MSA
1506 select HAVE_KVM
1507 help
1508 Choose this option to build a kernel for release 2 or later of the
1509 MIPS32 architecture. Most modern embedded systems with a 32-bit
1510 MIPS processor are based on a MIPS32 processor. If you know the
1511 specific type of processor in your system, choose those that one
1512 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1513
1514config CPU_MIPS32_R5
1515 bool "MIPS32 Release 5"
1516 depends on SYS_HAS_CPU_MIPS32_R5
1517 select CPU_HAS_PREFETCH
1518 select CPU_SUPPORTS_32BIT_KERNEL
1519 select CPU_SUPPORTS_HIGHMEM
1520 select CPU_SUPPORTS_MSA
1521 select HAVE_KVM
1522 select MIPS_O32_FP64_SUPPORT
1523 help
1524 Choose this option to build a kernel for release 5 or later of the
1525 MIPS32 architecture. New MIPS processors, starting with the Warrior
1526 family, are based on a MIPS32r5 processor. If you own an older
1527 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1528
1529config CPU_MIPS32_R6
1530 bool "MIPS32 Release 6"
1531 depends on SYS_HAS_CPU_MIPS32_R6
1532 select CPU_HAS_PREFETCH
1533 select CPU_NO_LOAD_STORE_LR
1534 select CPU_SUPPORTS_32BIT_KERNEL
1535 select CPU_SUPPORTS_HIGHMEM
1536 select CPU_SUPPORTS_MSA
1537 select HAVE_KVM
1538 select MIPS_O32_FP64_SUPPORT
1539 help
1540 Choose this option to build a kernel for release 6 or later of the
1541 MIPS32 architecture. New MIPS processors, starting with the Warrior
1542 family, are based on a MIPS32r6 processor. If you own an older
1543 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1544
1545config CPU_MIPS64_R1
1546 bool "MIPS64 Release 1"
1547 depends on SYS_HAS_CPU_MIPS64_R1
1548 select CPU_HAS_PREFETCH
1549 select CPU_SUPPORTS_32BIT_KERNEL
1550 select CPU_SUPPORTS_64BIT_KERNEL
1551 select CPU_SUPPORTS_HIGHMEM
1552 select CPU_SUPPORTS_HUGEPAGES
1553 help
1554 Choose this option to build a kernel for release 1 or later of the
1555 MIPS64 architecture. Many modern embedded systems with a 64-bit
1556 MIPS processor are based on a MIPS64 processor. If you know the
1557 specific type of processor in your system, choose those that one
1558 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1559 Release 2 of the MIPS64 architecture is available since several
1560 years so chances are you even have a MIPS64 Release 2 processor
1561 in which case you should choose CPU_MIPS64_R2 instead for better
1562 performance.
1563
1564config CPU_MIPS64_R2
1565 bool "MIPS64 Release 2"
1566 depends on SYS_HAS_CPU_MIPS64_R2
1567 select CPU_HAS_PREFETCH
1568 select CPU_SUPPORTS_32BIT_KERNEL
1569 select CPU_SUPPORTS_64BIT_KERNEL
1570 select CPU_SUPPORTS_HIGHMEM
1571 select CPU_SUPPORTS_HUGEPAGES
1572 select CPU_SUPPORTS_MSA
1573 select HAVE_KVM
1574 help
1575 Choose this option to build a kernel for release 2 or later of the
1576 MIPS64 architecture. Many modern embedded systems with a 64-bit
1577 MIPS processor are based on a MIPS64 processor. If you know the
1578 specific type of processor in your system, choose those that one
1579 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1580
1581config CPU_MIPS64_R5
1582 bool "MIPS64 Release 5"
1583 depends on SYS_HAS_CPU_MIPS64_R5
1584 select CPU_HAS_PREFETCH
1585 select CPU_SUPPORTS_32BIT_KERNEL
1586 select CPU_SUPPORTS_64BIT_KERNEL
1587 select CPU_SUPPORTS_HIGHMEM
1588 select CPU_SUPPORTS_HUGEPAGES
1589 select CPU_SUPPORTS_MSA
1590 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1591 select HAVE_KVM
1592 help
1593 Choose this option to build a kernel for release 5 or later of the
1594 MIPS64 architecture. This is a intermediate MIPS architecture
1595 release partly implementing release 6 features. Though there is no
1596 any hardware known to be based on this release.
1597
1598config CPU_MIPS64_R6
1599 bool "MIPS64 Release 6"
1600 depends on SYS_HAS_CPU_MIPS64_R6
1601 select CPU_HAS_PREFETCH
1602 select CPU_NO_LOAD_STORE_LR
1603 select CPU_SUPPORTS_32BIT_KERNEL
1604 select CPU_SUPPORTS_64BIT_KERNEL
1605 select CPU_SUPPORTS_HIGHMEM
1606 select CPU_SUPPORTS_HUGEPAGES
1607 select CPU_SUPPORTS_MSA
1608 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1609 select HAVE_KVM
1610 help
1611 Choose this option to build a kernel for release 6 or later of the
1612 MIPS64 architecture. New MIPS processors, starting with the Warrior
1613 family, are based on a MIPS64r6 processor. If you own an older
1614 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1615
1616config CPU_P5600
1617 bool "MIPS Warrior P5600"
1618 depends on SYS_HAS_CPU_P5600
1619 select CPU_HAS_PREFETCH
1620 select CPU_SUPPORTS_32BIT_KERNEL
1621 select CPU_SUPPORTS_HIGHMEM
1622 select CPU_SUPPORTS_MSA
1623 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1624 select CPU_SUPPORTS_CPUFREQ
1625 select CPU_MIPSR2_IRQ_VI
1626 select CPU_MIPSR2_IRQ_EI
1627 select HAVE_KVM
1628 select MIPS_O32_FP64_SUPPORT
1629 help
1630 Choose this option to build a kernel for MIPS Warrior P5600 CPU.
1631 It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes,
1632 MMU with two-levels TLB, UCA, MSA, MDU core level features and system
1633 level features like up to six P5600 calculation cores, CM2 with L2
1634 cache, IOCU/IOMMU (though might be unused depending on the system-
1635 specific IP core configuration), GIC, CPC, virtualisation module,
1636 eJTAG and PDtrace.
1637
1638config CPU_R3000
1639 bool "R3000"
1640 depends on SYS_HAS_CPU_R3000
1641 select CPU_HAS_WB
1642 select CPU_R3K_TLB
1643 select CPU_SUPPORTS_32BIT_KERNEL
1644 select CPU_SUPPORTS_HIGHMEM
1645 help
1646 Please make sure to pick the right CPU type. Linux/MIPS is not
1647 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1648 *not* work on R4000 machines and vice versa. However, since most
1649 of the supported machines have an R4000 (or similar) CPU, R4x00
1650 might be a safe bet. If the resulting kernel does not work,
1651 try to recompile with R3000.
1652
1653config CPU_TX39XX
1654 bool "R39XX"
1655 depends on SYS_HAS_CPU_TX39XX
1656 select CPU_SUPPORTS_32BIT_KERNEL
1657 select CPU_R3K_TLB
1658
1659config CPU_VR41XX
1660 bool "R41xx"
1661 depends on SYS_HAS_CPU_VR41XX
1662 select CPU_SUPPORTS_32BIT_KERNEL
1663 select CPU_SUPPORTS_64BIT_KERNEL
1664 help
1665 The options selects support for the NEC VR4100 series of processors.
1666 Only choose this option if you have one of these processors as a
1667 kernel built with this option will not run on any other type of
1668 processor or vice versa.
1669
1670config CPU_R4X00
1671 bool "R4x00"
1672 depends on SYS_HAS_CPU_R4X00
1673 select CPU_SUPPORTS_32BIT_KERNEL
1674 select CPU_SUPPORTS_64BIT_KERNEL
1675 select CPU_SUPPORTS_HUGEPAGES
1676 help
1677 MIPS Technologies R4000-series processors other than 4300, including
1678 the R4000, R4400, R4600, and 4700.
1679
1680config CPU_TX49XX
1681 bool "R49XX"
1682 depends on SYS_HAS_CPU_TX49XX
1683 select CPU_HAS_PREFETCH
1684 select CPU_SUPPORTS_32BIT_KERNEL
1685 select CPU_SUPPORTS_64BIT_KERNEL
1686 select CPU_SUPPORTS_HUGEPAGES
1687
1688config CPU_R5000
1689 bool "R5000"
1690 depends on SYS_HAS_CPU_R5000
1691 select CPU_SUPPORTS_32BIT_KERNEL
1692 select CPU_SUPPORTS_64BIT_KERNEL
1693 select CPU_SUPPORTS_HUGEPAGES
1694 help
1695 MIPS Technologies R5000-series processors other than the Nevada.
1696
1697config CPU_R5500
1698 bool "R5500"
1699 depends on SYS_HAS_CPU_R5500
1700 select CPU_SUPPORTS_32BIT_KERNEL
1701 select CPU_SUPPORTS_64BIT_KERNEL
1702 select CPU_SUPPORTS_HUGEPAGES
1703 help
1704 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1705 instruction set.
1706
1707config CPU_NEVADA
1708 bool "RM52xx"
1709 depends on SYS_HAS_CPU_NEVADA
1710 select CPU_SUPPORTS_32BIT_KERNEL
1711 select CPU_SUPPORTS_64BIT_KERNEL
1712 select CPU_SUPPORTS_HUGEPAGES
1713 help
1714 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1715
1716config CPU_R10000
1717 bool "R10000"
1718 depends on SYS_HAS_CPU_R10000
1719 select CPU_HAS_PREFETCH
1720 select CPU_SUPPORTS_32BIT_KERNEL
1721 select CPU_SUPPORTS_64BIT_KERNEL
1722 select CPU_SUPPORTS_HIGHMEM
1723 select CPU_SUPPORTS_HUGEPAGES
1724 help
1725 MIPS Technologies R10000-series processors.
1726
1727config CPU_RM7000
1728 bool "RM7000"
1729 depends on SYS_HAS_CPU_RM7000
1730 select CPU_HAS_PREFETCH
1731 select CPU_SUPPORTS_32BIT_KERNEL
1732 select CPU_SUPPORTS_64BIT_KERNEL
1733 select CPU_SUPPORTS_HIGHMEM
1734 select CPU_SUPPORTS_HUGEPAGES
1735
1736config CPU_SB1
1737 bool "SB1"
1738 depends on SYS_HAS_CPU_SB1
1739 select CPU_SUPPORTS_32BIT_KERNEL
1740 select CPU_SUPPORTS_64BIT_KERNEL
1741 select CPU_SUPPORTS_HIGHMEM
1742 select CPU_SUPPORTS_HUGEPAGES
1743 select WEAK_ORDERING
1744
1745config CPU_CAVIUM_OCTEON
1746 bool "Cavium Octeon processor"
1747 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1748 select CPU_HAS_PREFETCH
1749 select CPU_SUPPORTS_64BIT_KERNEL
1750 select WEAK_ORDERING
1751 select CPU_SUPPORTS_HIGHMEM
1752 select CPU_SUPPORTS_HUGEPAGES
1753 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1754 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1755 select MIPS_L1_CACHE_SHIFT_7
1756 select HAVE_KVM
1757 help
1758 The Cavium Octeon processor is a highly integrated chip containing
1759 many ethernet hardware widgets for networking tasks. The processor
1760 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1761 Full details can be found at http://www.caviumnetworks.com.
1762
1763config CPU_BMIPS
1764 bool "Broadcom BMIPS"
1765 depends on SYS_HAS_CPU_BMIPS
1766 select CPU_MIPS32
1767 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1768 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1769 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1770 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1771 select CPU_SUPPORTS_32BIT_KERNEL
1772 select DMA_NONCOHERENT
1773 select IRQ_MIPS_CPU
1774 select SWAP_IO_SPACE
1775 select WEAK_ORDERING
1776 select CPU_SUPPORTS_HIGHMEM
1777 select CPU_HAS_PREFETCH
1778 select CPU_SUPPORTS_CPUFREQ
1779 select MIPS_EXTERNAL_TIMER
1780 help
1781 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1782
1783config CPU_XLR
1784 bool "Netlogic XLR SoC"
1785 depends on SYS_HAS_CPU_XLR
1786 select CPU_SUPPORTS_32BIT_KERNEL
1787 select CPU_SUPPORTS_64BIT_KERNEL
1788 select CPU_SUPPORTS_HIGHMEM
1789 select CPU_SUPPORTS_HUGEPAGES
1790 select WEAK_ORDERING
1791 select WEAK_REORDERING_BEYOND_LLSC
1792 help
1793 Netlogic Microsystems XLR/XLS processors.
1794
1795config CPU_XLP
1796 bool "Netlogic XLP SoC"
1797 depends on SYS_HAS_CPU_XLP
1798 select CPU_SUPPORTS_32BIT_KERNEL
1799 select CPU_SUPPORTS_64BIT_KERNEL
1800 select CPU_SUPPORTS_HIGHMEM
1801 select WEAK_ORDERING
1802 select WEAK_REORDERING_BEYOND_LLSC
1803 select CPU_HAS_PREFETCH
1804 select CPU_MIPSR2
1805 select CPU_SUPPORTS_HUGEPAGES
1806 select MIPS_ASID_BITS_VARIABLE
1807 help
1808 Netlogic Microsystems XLP processors.
1809endchoice
1810
1811config CPU_MIPS32_3_5_FEATURES
1812 bool "MIPS32 Release 3.5 Features"
1813 depends on SYS_HAS_CPU_MIPS32_R3_5
1814 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \
1815 CPU_P5600
1816 help
1817 Choose this option to build a kernel for release 2 or later of the
1818 MIPS32 architecture including features from the 3.5 release such as
1819 support for Enhanced Virtual Addressing (EVA).
1820
1821config CPU_MIPS32_3_5_EVA
1822 bool "Enhanced Virtual Addressing (EVA)"
1823 depends on CPU_MIPS32_3_5_FEATURES
1824 select EVA
1825 default y
1826 help
1827 Choose this option if you want to enable the Enhanced Virtual
1828 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1829 One of its primary benefits is an increase in the maximum size
1830 of lowmem (up to 3GB). If unsure, say 'N' here.
1831
1832config CPU_MIPS32_R5_FEATURES
1833 bool "MIPS32 Release 5 Features"
1834 depends on SYS_HAS_CPU_MIPS32_R5
1835 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600
1836 help
1837 Choose this option to build a kernel for release 2 or later of the
1838 MIPS32 architecture including features from release 5 such as
1839 support for Extended Physical Addressing (XPA).
1840
1841config CPU_MIPS32_R5_XPA
1842 bool "Extended Physical Addressing (XPA)"
1843 depends on CPU_MIPS32_R5_FEATURES
1844 depends on !EVA
1845 depends on !PAGE_SIZE_4KB
1846 depends on SYS_SUPPORTS_HIGHMEM
1847 select XPA
1848 select HIGHMEM
1849 select PHYS_ADDR_T_64BIT
1850 default n
1851 help
1852 Choose this option if you want to enable the Extended Physical
1853 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1854 benefit is to increase physical addressing equal to or greater
1855 than 40 bits. Note that this has the side effect of turning on
1856 64-bit addressing which in turn makes the PTEs 64-bit in size.
1857 If unsure, say 'N' here.
1858
1859if CPU_LOONGSON2F
1860config CPU_NOP_WORKAROUNDS
1861 bool
1862
1863config CPU_JUMP_WORKAROUNDS
1864 bool
1865
1866config CPU_LOONGSON2F_WORKAROUNDS
1867 bool "Loongson 2F Workarounds"
1868 default y
1869 select CPU_NOP_WORKAROUNDS
1870 select CPU_JUMP_WORKAROUNDS
1871 help
1872 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1873 require workarounds. Without workarounds the system may hang
1874 unexpectedly. For more information please refer to the gas
1875 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1876
1877 Loongson 2F03 and later have fixed these issues and no workarounds
1878 are needed. The workarounds have no significant side effect on them
1879 but may decrease the performance of the system so this option should
1880 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1881 systems.
1882
1883 If unsure, please say Y.
1884endif # CPU_LOONGSON2F
1885
1886config SYS_SUPPORTS_ZBOOT
1887 bool
1888 select HAVE_KERNEL_GZIP
1889 select HAVE_KERNEL_BZIP2
1890 select HAVE_KERNEL_LZ4
1891 select HAVE_KERNEL_LZMA
1892 select HAVE_KERNEL_LZO
1893 select HAVE_KERNEL_XZ
1894
1895config SYS_SUPPORTS_ZBOOT_UART16550
1896 bool
1897 select SYS_SUPPORTS_ZBOOT
1898
1899config SYS_SUPPORTS_ZBOOT_UART_PROM
1900 bool
1901 select SYS_SUPPORTS_ZBOOT
1902
1903config CPU_LOONGSON2EF
1904 bool
1905 select CPU_SUPPORTS_32BIT_KERNEL
1906 select CPU_SUPPORTS_64BIT_KERNEL
1907 select CPU_SUPPORTS_HIGHMEM
1908 select CPU_SUPPORTS_HUGEPAGES
1909 select ARCH_HAS_PHYS_TO_DMA
1910
1911config CPU_LOONGSON32
1912 bool
1913 select CPU_MIPS32
1914 select CPU_MIPSR2
1915 select CPU_HAS_PREFETCH
1916 select CPU_SUPPORTS_32BIT_KERNEL
1917 select CPU_SUPPORTS_HIGHMEM
1918 select CPU_SUPPORTS_CPUFREQ
1919
1920config CPU_BMIPS32_3300
1921 select SMP_UP if SMP
1922 bool
1923
1924config CPU_BMIPS4350
1925 bool
1926 select SYS_SUPPORTS_SMP
1927 select SYS_SUPPORTS_HOTPLUG_CPU
1928
1929config CPU_BMIPS4380
1930 bool
1931 select MIPS_L1_CACHE_SHIFT_6
1932 select SYS_SUPPORTS_SMP
1933 select SYS_SUPPORTS_HOTPLUG_CPU
1934 select CPU_HAS_RIXI
1935
1936config CPU_BMIPS5000
1937 bool
1938 select MIPS_CPU_SCACHE
1939 select MIPS_L1_CACHE_SHIFT_7
1940 select SYS_SUPPORTS_SMP
1941 select SYS_SUPPORTS_HOTPLUG_CPU
1942 select CPU_HAS_RIXI
1943
1944config SYS_HAS_CPU_LOONGSON64
1945 bool
1946 select CPU_SUPPORTS_CPUFREQ
1947 select CPU_HAS_RIXI
1948
1949config SYS_HAS_CPU_LOONGSON2E
1950 bool
1951
1952config SYS_HAS_CPU_LOONGSON2F
1953 bool
1954 select CPU_SUPPORTS_CPUFREQ
1955 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1956
1957config SYS_HAS_CPU_LOONGSON1B
1958 bool
1959
1960config SYS_HAS_CPU_LOONGSON1C
1961 bool
1962
1963config SYS_HAS_CPU_MIPS32_R1
1964 bool
1965
1966config SYS_HAS_CPU_MIPS32_R2
1967 bool
1968
1969config SYS_HAS_CPU_MIPS32_R3_5
1970 bool
1971
1972config SYS_HAS_CPU_MIPS32_R5
1973 bool
1974 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1975
1976config SYS_HAS_CPU_MIPS32_R6
1977 bool
1978 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1979
1980config SYS_HAS_CPU_MIPS64_R1
1981 bool
1982
1983config SYS_HAS_CPU_MIPS64_R2
1984 bool
1985
1986config SYS_HAS_CPU_MIPS64_R6
1987 bool
1988 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1989
1990config SYS_HAS_CPU_P5600
1991 bool
1992 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1993
1994config SYS_HAS_CPU_R3000
1995 bool
1996
1997config SYS_HAS_CPU_TX39XX
1998 bool
1999
2000config SYS_HAS_CPU_VR41XX
2001 bool
2002
2003config SYS_HAS_CPU_R4X00
2004 bool
2005
2006config SYS_HAS_CPU_TX49XX
2007 bool
2008
2009config SYS_HAS_CPU_R5000
2010 bool
2011
2012config SYS_HAS_CPU_R5500
2013 bool
2014
2015config SYS_HAS_CPU_NEVADA
2016 bool
2017
2018config SYS_HAS_CPU_R10000
2019 bool
2020 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2021
2022config SYS_HAS_CPU_RM7000
2023 bool
2024
2025config SYS_HAS_CPU_SB1
2026 bool
2027
2028config SYS_HAS_CPU_CAVIUM_OCTEON
2029 bool
2030
2031config SYS_HAS_CPU_BMIPS
2032 bool
2033
2034config SYS_HAS_CPU_BMIPS32_3300
2035 bool
2036 select SYS_HAS_CPU_BMIPS
2037
2038config SYS_HAS_CPU_BMIPS4350
2039 bool
2040 select SYS_HAS_CPU_BMIPS
2041
2042config SYS_HAS_CPU_BMIPS4380
2043 bool
2044 select SYS_HAS_CPU_BMIPS
2045
2046config SYS_HAS_CPU_BMIPS5000
2047 bool
2048 select SYS_HAS_CPU_BMIPS
2049 select ARCH_HAS_SYNC_DMA_FOR_CPU
2050
2051config SYS_HAS_CPU_XLR
2052 bool
2053
2054config SYS_HAS_CPU_XLP
2055 bool
2056
2057#
2058# CPU may reorder R->R, R->W, W->R, W->W
2059# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2060#
2061config WEAK_ORDERING
2062 bool
2063
2064#
2065# CPU may reorder reads and writes beyond LL/SC
2066# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2067#
2068config WEAK_REORDERING_BEYOND_LLSC
2069 bool
2070endmenu
2071
2072#
2073# These two indicate any level of the MIPS32 and MIPS64 architecture
2074#
2075config CPU_MIPS32
2076 bool
2077 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \
2078 CPU_MIPS32_R6 || CPU_P5600
2079
2080config CPU_MIPS64
2081 bool
2082 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \
2083 CPU_MIPS64_R6
2084
2085#
2086# These indicate the revision of the architecture
2087#
2088config CPU_MIPSR1
2089 bool
2090 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2091
2092config CPU_MIPSR2
2093 bool
2094 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2095 select CPU_HAS_RIXI
2096 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2097 select MIPS_SPRAM
2098
2099config CPU_MIPSR5
2100 bool
2101 default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600
2102 select CPU_HAS_RIXI
2103 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2104 select MIPS_SPRAM
2105
2106config CPU_MIPSR6
2107 bool
2108 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2109 select CPU_HAS_RIXI
2110 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2111 select HAVE_ARCH_BITREVERSE
2112 select MIPS_ASID_BITS_VARIABLE
2113 select MIPS_CRC_SUPPORT
2114 select MIPS_SPRAM
2115
2116config TARGET_ISA_REV
2117 int
2118 default 1 if CPU_MIPSR1
2119 default 2 if CPU_MIPSR2
2120 default 5 if CPU_MIPSR5
2121 default 6 if CPU_MIPSR6
2122 default 0
2123 help
2124 Reflects the ISA revision being targeted by the kernel build. This
2125 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2126
2127config EVA
2128 bool
2129
2130config XPA
2131 bool
2132
2133config SYS_SUPPORTS_32BIT_KERNEL
2134 bool
2135config SYS_SUPPORTS_64BIT_KERNEL
2136 bool
2137config CPU_SUPPORTS_32BIT_KERNEL
2138 bool
2139config CPU_SUPPORTS_64BIT_KERNEL
2140 bool
2141config CPU_SUPPORTS_CPUFREQ
2142 bool
2143config CPU_SUPPORTS_ADDRWINCFG
2144 bool
2145config CPU_SUPPORTS_HUGEPAGES
2146 bool
2147 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2148config MIPS_PGD_C0_CONTEXT
2149 bool
2150 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2151
2152#
2153# Set to y for ptrace access to watch registers.
2154#
2155config HARDWARE_WATCHPOINTS
2156 bool
2157 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2158
2159menu "Kernel type"
2160
2161choice
2162 prompt "Kernel code model"
2163 help
2164 You should only select this option if you have a workload that
2165 actually benefits from 64-bit processing or if your machine has
2166 large memory. You will only be presented a single option in this
2167 menu if your system does not support both 32-bit and 64-bit kernels.
2168
2169config 32BIT
2170 bool "32-bit kernel"
2171 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2172 select TRAD_SIGNALS
2173 help
2174 Select this option if you want to build a 32-bit kernel.
2175
2176config 64BIT
2177 bool "64-bit kernel"
2178 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2179 help
2180 Select this option if you want to build a 64-bit kernel.
2181
2182endchoice
2183
2184config KVM_GUEST
2185 bool "KVM Guest Kernel"
2186 depends on CPU_MIPS32_R2
2187 depends on BROKEN_ON_SMP
2188 help
2189 Select this option if building a guest kernel for KVM (Trap & Emulate)
2190 mode.
2191
2192config KVM_GUEST_TIMER_FREQ
2193 int "Count/Compare Timer Frequency (MHz)"
2194 depends on KVM_GUEST
2195 default 100
2196 help
2197 Set this to non-zero if building a guest kernel for KVM to skip RTC
2198 emulation when determining guest CPU Frequency. Instead, the guest's
2199 timer frequency is specified directly.
2200
2201config MIPS_VA_BITS_48
2202 bool "48 bits virtual memory"
2203 depends on 64BIT
2204 help
2205 Support a maximum at least 48 bits of application virtual
2206 memory. Default is 40 bits or less, depending on the CPU.
2207 For page sizes 16k and above, this option results in a small
2208 memory overhead for page tables. For 4k page size, a fourth
2209 level of page tables is added which imposes both a memory
2210 overhead as well as slower TLB fault handling.
2211
2212 If unsure, say N.
2213
2214choice
2215 prompt "Kernel page size"
2216 default PAGE_SIZE_4KB
2217
2218config PAGE_SIZE_4KB
2219 bool "4kB"
2220 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
2221 help
2222 This option select the standard 4kB Linux page size. On some
2223 R3000-family processors this is the only available page size. Using
2224 4kB page size will minimize memory consumption and is therefore
2225 recommended for low memory systems.
2226
2227config PAGE_SIZE_8KB
2228 bool "8kB"
2229 depends on CPU_CAVIUM_OCTEON
2230 depends on !MIPS_VA_BITS_48
2231 help
2232 Using 8kB page size will result in higher performance kernel at
2233 the price of higher memory consumption. This option is available
2234 only on cnMIPS processors. Note that you will need a suitable Linux
2235 distribution to support this.
2236
2237config PAGE_SIZE_16KB
2238 bool "16kB"
2239 depends on !CPU_R3000 && !CPU_TX39XX
2240 help
2241 Using 16kB page size will result in higher performance kernel at
2242 the price of higher memory consumption. This option is available on
2243 all non-R3000 family processors. Note that you will need a suitable
2244 Linux distribution to support this.
2245
2246config PAGE_SIZE_32KB
2247 bool "32kB"
2248 depends on CPU_CAVIUM_OCTEON
2249 depends on !MIPS_VA_BITS_48
2250 help
2251 Using 32kB page size will result in higher performance kernel at
2252 the price of higher memory consumption. This option is available
2253 only on cnMIPS cores. Note that you will need a suitable Linux
2254 distribution to support this.
2255
2256config PAGE_SIZE_64KB
2257 bool "64kB"
2258 depends on !CPU_R3000 && !CPU_TX39XX
2259 help
2260 Using 64kB page size will result in higher performance kernel at
2261 the price of higher memory consumption. This option is available on
2262 all non-R3000 family processor. Not that at the time of this
2263 writing this option is still high experimental.
2264
2265endchoice
2266
2267config FORCE_MAX_ZONEORDER
2268 int "Maximum zone order"
2269 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2270 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2271 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2272 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2273 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2274 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2275 range 11 64
2276 default "11"
2277 help
2278 The kernel memory allocator divides physically contiguous memory
2279 blocks into "zones", where each zone is a power of two number of
2280 pages. This option selects the largest power of two that the kernel
2281 keeps in the memory allocator. If you need to allocate very large
2282 blocks of physically contiguous memory, then you may need to
2283 increase this value.
2284
2285 This config option is actually maximum order plus one. For example,
2286 a value of 11 means that the largest free memory block is 2^10 pages.
2287
2288 The page size is not necessarily 4KB. Keep this in mind
2289 when choosing a value for this option.
2290
2291config BOARD_SCACHE
2292 bool
2293
2294config IP22_CPU_SCACHE
2295 bool
2296 select BOARD_SCACHE
2297
2298#
2299# Support for a MIPS32 / MIPS64 style S-caches
2300#
2301config MIPS_CPU_SCACHE
2302 bool
2303 select BOARD_SCACHE
2304
2305config R5000_CPU_SCACHE
2306 bool
2307 select BOARD_SCACHE
2308
2309config RM7000_CPU_SCACHE
2310 bool
2311 select BOARD_SCACHE
2312
2313config SIBYTE_DMA_PAGEOPS
2314 bool "Use DMA to clear/copy pages"
2315 depends on CPU_SB1
2316 help
2317 Instead of using the CPU to zero and copy pages, use a Data Mover
2318 channel. These DMA channels are otherwise unused by the standard
2319 SiByte Linux port. Seems to give a small performance benefit.
2320
2321config CPU_HAS_PREFETCH
2322 bool
2323
2324config CPU_GENERIC_DUMP_TLB
2325 bool
2326 default y if !(CPU_R3000 || CPU_TX39XX)
2327
2328config MIPS_FP_SUPPORT
2329 bool "Floating Point support" if EXPERT
2330 default y
2331 help
2332 Select y to include support for floating point in the kernel
2333 including initialization of FPU hardware, FP context save & restore
2334 and emulation of an FPU where necessary. Without this support any
2335 userland program attempting to use floating point instructions will
2336 receive a SIGILL.
2337
2338 If you know that your userland will not attempt to use floating point
2339 instructions then you can say n here to shrink the kernel a little.
2340
2341 If unsure, say y.
2342
2343config CPU_R2300_FPU
2344 bool
2345 depends on MIPS_FP_SUPPORT
2346 default y if CPU_R3000 || CPU_TX39XX
2347
2348config CPU_R3K_TLB
2349 bool
2350
2351config CPU_R4K_FPU
2352 bool
2353 depends on MIPS_FP_SUPPORT
2354 default y if !CPU_R2300_FPU
2355
2356config CPU_R4K_CACHE_TLB
2357 bool
2358 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2359
2360config MIPS_MT_SMP
2361 bool "MIPS MT SMP support (1 TC on each available VPE)"
2362 default y
2363 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2364 select CPU_MIPSR2_IRQ_VI
2365 select CPU_MIPSR2_IRQ_EI
2366 select SYNC_R4K
2367 select MIPS_MT
2368 select SMP
2369 select SMP_UP
2370 select SYS_SUPPORTS_SMP
2371 select SYS_SUPPORTS_SCHED_SMT
2372 select MIPS_PERF_SHARED_TC_COUNTERS
2373 help
2374 This is a kernel model which is known as SMVP. This is supported
2375 on cores with the MT ASE and uses the available VPEs to implement
2376 virtual processors which supports SMP. This is equivalent to the
2377 Intel Hyperthreading feature. For further information go to
2378 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2379
2380config MIPS_MT
2381 bool
2382
2383config SCHED_SMT
2384 bool "SMT (multithreading) scheduler support"
2385 depends on SYS_SUPPORTS_SCHED_SMT
2386 default n
2387 help
2388 SMT scheduler support improves the CPU scheduler's decision making
2389 when dealing with MIPS MT enabled cores at a cost of slightly
2390 increased overhead in some places. If unsure say N here.
2391
2392config SYS_SUPPORTS_SCHED_SMT
2393 bool
2394
2395config SYS_SUPPORTS_MULTITHREADING
2396 bool
2397
2398config MIPS_MT_FPAFF
2399 bool "Dynamic FPU affinity for FP-intensive threads"
2400 default y
2401 depends on MIPS_MT_SMP
2402
2403config MIPSR2_TO_R6_EMULATOR
2404 bool "MIPS R2-to-R6 emulator"
2405 depends on CPU_MIPSR6
2406 depends on MIPS_FP_SUPPORT
2407 default y
2408 help
2409 Choose this option if you want to run non-R6 MIPS userland code.
2410 Even if you say 'Y' here, the emulator will still be disabled by
2411 default. You can enable it using the 'mipsr2emu' kernel option.
2412 The only reason this is a build-time option is to save ~14K from the
2413 final kernel image.
2414
2415config SYS_SUPPORTS_VPE_LOADER
2416 bool
2417 depends on SYS_SUPPORTS_MULTITHREADING
2418 help
2419 Indicates that the platform supports the VPE loader, and provides
2420 physical_memsize.
2421
2422config MIPS_VPE_LOADER
2423 bool "VPE loader support."
2424 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2425 select CPU_MIPSR2_IRQ_VI
2426 select CPU_MIPSR2_IRQ_EI
2427 select MIPS_MT
2428 help
2429 Includes a loader for loading an elf relocatable object
2430 onto another VPE and running it.
2431
2432config MIPS_VPE_LOADER_CMP
2433 bool
2434 default "y"
2435 depends on MIPS_VPE_LOADER && MIPS_CMP
2436
2437config MIPS_VPE_LOADER_MT
2438 bool
2439 default "y"
2440 depends on MIPS_VPE_LOADER && !MIPS_CMP
2441
2442config MIPS_VPE_LOADER_TOM
2443 bool "Load VPE program into memory hidden from linux"
2444 depends on MIPS_VPE_LOADER
2445 default y
2446 help
2447 The loader can use memory that is present but has been hidden from
2448 Linux using the kernel command line option "mem=xxMB". It's up to
2449 you to ensure the amount you put in the option and the space your
2450 program requires is less or equal to the amount physically present.
2451
2452config MIPS_VPE_APSP_API
2453 bool "Enable support for AP/SP API (RTLX)"
2454 depends on MIPS_VPE_LOADER
2455
2456config MIPS_VPE_APSP_API_CMP
2457 bool
2458 default "y"
2459 depends on MIPS_VPE_APSP_API && MIPS_CMP
2460
2461config MIPS_VPE_APSP_API_MT
2462 bool
2463 default "y"
2464 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2465
2466config MIPS_CMP
2467 bool "MIPS CMP framework support (DEPRECATED)"
2468 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2469 select SMP
2470 select SYNC_R4K
2471 select SYS_SUPPORTS_SMP
2472 select WEAK_ORDERING
2473 default n
2474 help
2475 Select this if you are using a bootloader which implements the "CMP
2476 framework" protocol (ie. YAMON) and want your kernel to make use of
2477 its ability to start secondary CPUs.
2478
2479 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2480 instead of this.
2481
2482config MIPS_CPS
2483 bool "MIPS Coherent Processing System support"
2484 depends on SYS_SUPPORTS_MIPS_CPS
2485 select MIPS_CM
2486 select MIPS_CPS_PM if HOTPLUG_CPU
2487 select SMP
2488 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2489 select SYS_SUPPORTS_HOTPLUG_CPU
2490 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2491 select SYS_SUPPORTS_SMP
2492 select WEAK_ORDERING
2493 help
2494 Select this if you wish to run an SMP kernel across multiple cores
2495 within a MIPS Coherent Processing System. When this option is
2496 enabled the kernel will probe for other cores and boot them with
2497 no external assistance. It is safe to enable this when hardware
2498 support is unavailable.
2499
2500config MIPS_CPS_PM
2501 depends on MIPS_CPS
2502 bool
2503
2504config MIPS_CM
2505 bool
2506 select MIPS_CPC
2507
2508config MIPS_CPC
2509 bool
2510
2511config SB1_PASS_2_WORKAROUNDS
2512 bool
2513 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2514 default y
2515
2516config SB1_PASS_2_1_WORKAROUNDS
2517 bool
2518 depends on CPU_SB1 && CPU_SB1_PASS_2
2519 default y
2520
2521choice
2522 prompt "SmartMIPS or microMIPS ASE support"
2523
2524config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2525 bool "None"
2526 help
2527 Select this if you want neither microMIPS nor SmartMIPS support
2528
2529config CPU_HAS_SMARTMIPS
2530 depends on SYS_SUPPORTS_SMARTMIPS
2531 bool "SmartMIPS"
2532 help
2533 SmartMIPS is a extension of the MIPS32 architecture aimed at
2534 increased security at both hardware and software level for
2535 smartcards. Enabling this option will allow proper use of the
2536 SmartMIPS instructions by Linux applications. However a kernel with
2537 this option will not work on a MIPS core without SmartMIPS core. If
2538 you don't know you probably don't have SmartMIPS and should say N
2539 here.
2540
2541config CPU_MICROMIPS
2542 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2543 bool "microMIPS"
2544 help
2545 When this option is enabled the kernel will be built using the
2546 microMIPS ISA
2547
2548endchoice
2549
2550config CPU_HAS_MSA
2551 bool "Support for the MIPS SIMD Architecture"
2552 depends on CPU_SUPPORTS_MSA
2553 depends on MIPS_FP_SUPPORT
2554 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2555 help
2556 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2557 and a set of SIMD instructions to operate on them. When this option
2558 is enabled the kernel will support allocating & switching MSA
2559 vector register contexts. If you know that your kernel will only be
2560 running on CPUs which do not support MSA or that your userland will
2561 not be making use of it then you may wish to say N here to reduce
2562 the size & complexity of your kernel.
2563
2564 If unsure, say Y.
2565
2566config CPU_HAS_WB
2567 bool
2568
2569config XKS01
2570 bool
2571
2572config CPU_HAS_DIEI
2573 depends on !CPU_DIEI_BROKEN
2574 bool
2575
2576config CPU_DIEI_BROKEN
2577 bool
2578
2579config CPU_HAS_RIXI
2580 bool
2581
2582config CPU_NO_LOAD_STORE_LR
2583 bool
2584 help
2585 CPU lacks support for unaligned load and store instructions:
2586 LWL, LWR, SWL, SWR (Load/store word left/right).
2587 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
2588 systems).
2589
2590#
2591# Vectored interrupt mode is an R2 feature
2592#
2593config CPU_MIPSR2_IRQ_VI
2594 bool
2595
2596#
2597# Extended interrupt mode is an R2 feature
2598#
2599config CPU_MIPSR2_IRQ_EI
2600 bool
2601
2602config CPU_HAS_SYNC
2603 bool
2604 depends on !CPU_R3000
2605 default y
2606
2607#
2608# CPU non-features
2609#
2610config CPU_DADDI_WORKAROUNDS
2611 bool
2612
2613config CPU_R4000_WORKAROUNDS
2614 bool
2615 select CPU_R4400_WORKAROUNDS
2616
2617config CPU_R4400_WORKAROUNDS
2618 bool
2619
2620config CPU_R4X00_BUGS64
2621 bool
2622 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
2623
2624config MIPS_ASID_SHIFT
2625 int
2626 default 6 if CPU_R3000 || CPU_TX39XX
2627 default 0
2628
2629config MIPS_ASID_BITS
2630 int
2631 default 0 if MIPS_ASID_BITS_VARIABLE
2632 default 6 if CPU_R3000 || CPU_TX39XX
2633 default 8
2634
2635config MIPS_ASID_BITS_VARIABLE
2636 bool
2637
2638config MIPS_CRC_SUPPORT
2639 bool
2640
2641#
2642# - Highmem only makes sense for the 32-bit kernel.
2643# - The current highmem code will only work properly on physically indexed
2644# caches such as R3000, SB1, R7000 or those that look like they're virtually
2645# indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2646# moment we protect the user and offer the highmem option only on machines
2647# where it's known to be safe. This will not offer highmem on a few systems
2648# such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2649# indexed CPUs but we're playing safe.
2650# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2651# know they might have memory configurations that could make use of highmem
2652# support.
2653#
2654config HIGHMEM
2655 bool "High Memory Support"
2656 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2657
2658config CPU_SUPPORTS_HIGHMEM
2659 bool
2660
2661config SYS_SUPPORTS_HIGHMEM
2662 bool
2663
2664config SYS_SUPPORTS_SMARTMIPS
2665 bool
2666
2667config SYS_SUPPORTS_MICROMIPS
2668 bool
2669
2670config SYS_SUPPORTS_MIPS16
2671 bool
2672 help
2673 This option must be set if a kernel might be executed on a MIPS16-
2674 enabled CPU even if MIPS16 is not actually being used. In other
2675 words, it makes the kernel MIPS16-tolerant.
2676
2677config CPU_SUPPORTS_MSA
2678 bool
2679
2680config ARCH_FLATMEM_ENABLE
2681 def_bool y
2682 depends on !NUMA && !CPU_LOONGSON2EF
2683
2684config ARCH_SPARSEMEM_ENABLE
2685 bool
2686 select SPARSEMEM_STATIC if !SGI_IP27
2687
2688config NUMA
2689 bool "NUMA Support"
2690 depends on SYS_SUPPORTS_NUMA
2691 help
2692 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2693 Access). This option improves performance on systems with more
2694 than two nodes; on two node systems it is generally better to
2695 leave it disabled; on single node systems leave this option
2696 disabled.
2697
2698config SYS_SUPPORTS_NUMA
2699 bool
2700
2701config HAVE_SETUP_PER_CPU_AREA
2702 def_bool y
2703 depends on NUMA
2704
2705config NEED_PER_CPU_EMBED_FIRST_CHUNK
2706 def_bool y
2707 depends on NUMA
2708
2709config RELOCATABLE
2710 bool "Relocatable kernel"
2711 depends on SYS_SUPPORTS_RELOCATABLE
2712 depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \
2713 CPU_MIPS32_R5 || CPU_MIPS64_R5 || \
2714 CPU_MIPS32_R6 || CPU_MIPS64_R6 || \
2715 CPU_P5600 || CAVIUM_OCTEON_SOC
2716 help
2717 This builds a kernel image that retains relocation information
2718 so it can be loaded someplace besides the default 1MB.
2719 The relocations make the kernel binary about 15% larger,
2720 but are discarded at runtime
2721
2722config RELOCATION_TABLE_SIZE
2723 hex "Relocation table size"
2724 depends on RELOCATABLE
2725 range 0x0 0x01000000
2726 default "0x00100000"
2727 help
2728 A table of relocation data will be appended to the kernel binary
2729 and parsed at boot to fix up the relocated kernel.
2730
2731 This option allows the amount of space reserved for the table to be
2732 adjusted, although the default of 1Mb should be ok in most cases.
2733
2734 The build will fail and a valid size suggested if this is too small.
2735
2736 If unsure, leave at the default value.
2737
2738config RANDOMIZE_BASE
2739 bool "Randomize the address of the kernel image"
2740 depends on RELOCATABLE
2741 help
2742 Randomizes the physical and virtual address at which the
2743 kernel image is loaded, as a security feature that
2744 deters exploit attempts relying on knowledge of the location
2745 of kernel internals.
2746
2747 Entropy is generated using any coprocessor 0 registers available.
2748
2749 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2750
2751 If unsure, say N.
2752
2753config RANDOMIZE_BASE_MAX_OFFSET
2754 hex "Maximum kASLR offset" if EXPERT
2755 depends on RANDOMIZE_BASE
2756 range 0x0 0x40000000 if EVA || 64BIT
2757 range 0x0 0x08000000
2758 default "0x01000000"
2759 help
2760 When kASLR is active, this provides the maximum offset that will
2761 be applied to the kernel image. It should be set according to the
2762 amount of physical RAM available in the target system minus
2763 PHYSICAL_START and must be a power of 2.
2764
2765 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2766 EVA or 64-bit. The default is 16Mb.
2767
2768config NODES_SHIFT
2769 int
2770 default "6"
2771 depends on NEED_MULTIPLE_NODES
2772
2773config HW_PERF_EVENTS
2774 bool "Enable hardware performance counter support for perf events"
2775 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
2776 default y
2777 help
2778 Enable hardware performance counter support for perf events. If
2779 disabled, perf events will use software events only.
2780
2781config DMI
2782 bool "Enable DMI scanning"
2783 depends on MACH_LOONGSON64
2784 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
2785 default y
2786 help
2787 Enabled scanning of DMI to identify machine quirks. Say Y
2788 here unless you have verified that your setup is not
2789 affected by entries in the DMI blacklist. Required by PNP
2790 BIOS code.
2791
2792config SMP
2793 bool "Multi-Processing support"
2794 depends on SYS_SUPPORTS_SMP
2795 help
2796 This enables support for systems with more than one CPU. If you have
2797 a system with only one CPU, say N. If you have a system with more
2798 than one CPU, say Y.
2799
2800 If you say N here, the kernel will run on uni- and multiprocessor
2801 machines, but will use only one CPU of a multiprocessor machine. If
2802 you say Y here, the kernel will run on many, but not all,
2803 uniprocessor machines. On a uniprocessor machine, the kernel
2804 will run faster if you say N here.
2805
2806 People using multiprocessor machines who say Y here should also say
2807 Y to "Enhanced Real Time Clock Support", below.
2808
2809 See also the SMP-HOWTO available at
2810 <https://www.tldp.org/docs.html#howto>.
2811
2812 If you don't know what to do here, say N.
2813
2814config HOTPLUG_CPU
2815 bool "Support for hot-pluggable CPUs"
2816 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2817 help
2818 Say Y here to allow turning CPUs off and on. CPUs can be
2819 controlled through /sys/devices/system/cpu.
2820 (Note: power management support will enable this option
2821 automatically on SMP systems. )
2822 Say N if you want to disable CPU hotplug.
2823
2824config SMP_UP
2825 bool
2826
2827config SYS_SUPPORTS_MIPS_CMP
2828 bool
2829
2830config SYS_SUPPORTS_MIPS_CPS
2831 bool
2832
2833config SYS_SUPPORTS_SMP
2834 bool
2835
2836config NR_CPUS_DEFAULT_4
2837 bool
2838
2839config NR_CPUS_DEFAULT_8
2840 bool
2841
2842config NR_CPUS_DEFAULT_16
2843 bool
2844
2845config NR_CPUS_DEFAULT_32
2846 bool
2847
2848config NR_CPUS_DEFAULT_64
2849 bool
2850
2851config NR_CPUS
2852 int "Maximum number of CPUs (2-256)"
2853 range 2 256
2854 depends on SMP
2855 default "4" if NR_CPUS_DEFAULT_4
2856 default "8" if NR_CPUS_DEFAULT_8
2857 default "16" if NR_CPUS_DEFAULT_16
2858 default "32" if NR_CPUS_DEFAULT_32
2859 default "64" if NR_CPUS_DEFAULT_64
2860 help
2861 This allows you to specify the maximum number of CPUs which this
2862 kernel will support. The maximum supported value is 32 for 32-bit
2863 kernel and 64 for 64-bit kernels; the minimum value which makes
2864 sense is 1 for Qemu (useful only for kernel debugging purposes)
2865 and 2 for all others.
2866
2867 This is purely to save memory - each supported CPU adds
2868 approximately eight kilobytes to the kernel image. For best
2869 performance should round up your number of processors to the next
2870 power of two.
2871
2872config MIPS_PERF_SHARED_TC_COUNTERS
2873 bool
2874
2875config MIPS_NR_CPU_NR_MAP_1024
2876 bool
2877
2878config MIPS_NR_CPU_NR_MAP
2879 int
2880 depends on SMP
2881 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2882 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2883
2884#
2885# Timer Interrupt Frequency Configuration
2886#
2887
2888choice
2889 prompt "Timer frequency"
2890 default HZ_250
2891 help
2892 Allows the configuration of the timer frequency.
2893
2894 config HZ_24
2895 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2896
2897 config HZ_48
2898 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2899
2900 config HZ_100
2901 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2902
2903 config HZ_128
2904 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2905
2906 config HZ_250
2907 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2908
2909 config HZ_256
2910 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2911
2912 config HZ_1000
2913 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2914
2915 config HZ_1024
2916 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2917
2918endchoice
2919
2920config SYS_SUPPORTS_24HZ
2921 bool
2922
2923config SYS_SUPPORTS_48HZ
2924 bool
2925
2926config SYS_SUPPORTS_100HZ
2927 bool
2928
2929config SYS_SUPPORTS_128HZ
2930 bool
2931
2932config SYS_SUPPORTS_250HZ
2933 bool
2934
2935config SYS_SUPPORTS_256HZ
2936 bool
2937
2938config SYS_SUPPORTS_1000HZ
2939 bool
2940
2941config SYS_SUPPORTS_1024HZ
2942 bool
2943
2944config SYS_SUPPORTS_ARBIT_HZ
2945 bool
2946 default y if !SYS_SUPPORTS_24HZ && \
2947 !SYS_SUPPORTS_48HZ && \
2948 !SYS_SUPPORTS_100HZ && \
2949 !SYS_SUPPORTS_128HZ && \
2950 !SYS_SUPPORTS_250HZ && \
2951 !SYS_SUPPORTS_256HZ && \
2952 !SYS_SUPPORTS_1000HZ && \
2953 !SYS_SUPPORTS_1024HZ
2954
2955config HZ
2956 int
2957 default 24 if HZ_24
2958 default 48 if HZ_48
2959 default 100 if HZ_100
2960 default 128 if HZ_128
2961 default 250 if HZ_250
2962 default 256 if HZ_256
2963 default 1000 if HZ_1000
2964 default 1024 if HZ_1024
2965
2966config SCHED_HRTICK
2967 def_bool HIGH_RES_TIMERS
2968
2969config KEXEC
2970 bool "Kexec system call"
2971 select KEXEC_CORE
2972 help
2973 kexec is a system call that implements the ability to shutdown your
2974 current kernel, and to start another kernel. It is like a reboot
2975 but it is independent of the system firmware. And like a reboot
2976 you can start any kernel with it, not just Linux.
2977
2978 The name comes from the similarity to the exec system call.
2979
2980 It is an ongoing process to be certain the hardware in a machine
2981 is properly shutdown, so do not be surprised if this code does not
2982 initially work for you. As of this writing the exact hardware
2983 interface is strongly in flux, so no good recommendation can be
2984 made.
2985
2986config CRASH_DUMP
2987 bool "Kernel crash dumps"
2988 help
2989 Generate crash dump after being started by kexec.
2990 This should be normally only set in special crash dump kernels
2991 which are loaded in the main kernel with kexec-tools into
2992 a specially reserved region and then later executed after
2993 a crash by kdump/kexec. The crash dump kernel must be compiled
2994 to a memory address not used by the main kernel or firmware using
2995 PHYSICAL_START.
2996
2997config PHYSICAL_START
2998 hex "Physical address where the kernel is loaded"
2999 default "0xffffffff84000000"
3000 depends on CRASH_DUMP
3001 help
3002 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
3003 If you plan to use kernel for capturing the crash dump change
3004 this value to start of the reserved region (the "X" value as
3005 specified in the "crashkernel=YM@XM" command line boot parameter
3006 passed to the panic-ed kernel).
3007
3008config SECCOMP
3009 bool "Enable seccomp to safely compute untrusted bytecode"
3010 depends on PROC_FS
3011 default y
3012 help
3013 This kernel feature is useful for number crunching applications
3014 that may need to compute untrusted bytecode during their
3015 execution. By using pipes or other transports made available to
3016 the process as file descriptors supporting the read/write
3017 syscalls, it's possible to isolate those applications in
3018 their own address space using seccomp. Once seccomp is
3019 enabled via /proc/<pid>/seccomp, it cannot be disabled
3020 and the task is only allowed to execute a few safe syscalls
3021 defined by each seccomp mode.
3022
3023 If unsure, say Y. Only embedded should say N here.
3024
3025config MIPS_O32_FP64_SUPPORT
3026 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
3027 depends on 32BIT || MIPS32_O32
3028 help
3029 When this is enabled, the kernel will support use of 64-bit floating
3030 point registers with binaries using the O32 ABI along with the
3031 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
3032 32-bit MIPS systems this support is at the cost of increasing the
3033 size and complexity of the compiled FPU emulator. Thus if you are
3034 running a MIPS32 system and know that none of your userland binaries
3035 will require 64-bit floating point, you may wish to reduce the size
3036 of your kernel & potentially improve FP emulation performance by
3037 saying N here.
3038
3039 Although binutils currently supports use of this flag the details
3040 concerning its effect upon the O32 ABI in userland are still being
3041 worked on. In order to avoid userland becoming dependant upon current
3042 behaviour before the details have been finalised, this option should
3043 be considered experimental and only enabled by those working upon
3044 said details.
3045
3046 If unsure, say N.
3047
3048config USE_OF
3049 bool
3050 select OF
3051 select OF_EARLY_FLATTREE
3052 select IRQ_DOMAIN
3053
3054config UHI_BOOT
3055 bool
3056
3057config BUILTIN_DTB
3058 bool
3059
3060choice
3061 prompt "Kernel appended dtb support" if USE_OF
3062 default MIPS_NO_APPENDED_DTB
3063
3064 config MIPS_NO_APPENDED_DTB
3065 bool "None"
3066 help
3067 Do not enable appended dtb support.
3068
3069 config MIPS_ELF_APPENDED_DTB
3070 bool "vmlinux"
3071 help
3072 With this option, the boot code will look for a device tree binary
3073 DTB) included in the vmlinux ELF section .appended_dtb. By default
3074 it is empty and the DTB can be appended using binutils command
3075 objcopy:
3076
3077 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3078
3079 This is meant as a backward compatiblity convenience for those
3080 systems with a bootloader that can't be upgraded to accommodate
3081 the documented boot protocol using a device tree.
3082
3083 config MIPS_RAW_APPENDED_DTB
3084 bool "vmlinux.bin or vmlinuz.bin"
3085 help
3086 With this option, the boot code will look for a device tree binary
3087 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3088 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3089
3090 This is meant as a backward compatibility convenience for those
3091 systems with a bootloader that can't be upgraded to accommodate
3092 the documented boot protocol using a device tree.
3093
3094 Beware that there is very little in terms of protection against
3095 this option being confused by leftover garbage in memory that might
3096 look like a DTB header after a reboot if no actual DTB is appended
3097 to vmlinux.bin. Do not leave this option active in a production kernel
3098 if you don't intend to always append a DTB.
3099endchoice
3100
3101choice
3102 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3103 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3104 !MACH_LOONGSON64 && !MIPS_MALTA && \
3105 !CAVIUM_OCTEON_SOC
3106 default MIPS_CMDLINE_FROM_BOOTLOADER
3107
3108 config MIPS_CMDLINE_FROM_DTB
3109 depends on USE_OF
3110 bool "Dtb kernel arguments if available"
3111
3112 config MIPS_CMDLINE_DTB_EXTEND
3113 depends on USE_OF
3114 bool "Extend dtb kernel arguments with bootloader arguments"
3115
3116 config MIPS_CMDLINE_FROM_BOOTLOADER
3117 bool "Bootloader kernel arguments if available"
3118
3119 config MIPS_CMDLINE_BUILTIN_EXTEND
3120 depends on CMDLINE_BOOL
3121 bool "Extend builtin kernel arguments with bootloader arguments"
3122endchoice
3123
3124endmenu
3125
3126config LOCKDEP_SUPPORT
3127 bool
3128 default y
3129
3130config STACKTRACE_SUPPORT
3131 bool
3132 default y
3133
3134config PGTABLE_LEVELS
3135 int
3136 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3137 default 3 if 64BIT && !PAGE_SIZE_64KB
3138 default 2
3139
3140config MIPS_AUTO_PFN_OFFSET
3141 bool
3142
3143menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3144
3145config PCI_DRIVERS_GENERIC
3146 select PCI_DOMAINS_GENERIC if PCI
3147 bool
3148
3149config PCI_DRIVERS_LEGACY
3150 def_bool !PCI_DRIVERS_GENERIC
3151 select NO_GENERIC_PCI_IOPORT_MAP
3152 select PCI_DOMAINS if PCI
3153
3154#
3155# ISA support is now enabled via select. Too many systems still have the one
3156# or other ISA chip on the board that users don't know about so don't expect
3157# users to choose the right thing ...
3158#
3159config ISA
3160 bool
3161
3162config TC
3163 bool "TURBOchannel support"
3164 depends on MACH_DECSTATION
3165 help
3166 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3167 processors. TURBOchannel programming specifications are available
3168 at:
3169 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3170 and:
3171 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3172 Linux driver support status is documented at:
3173 <http://www.linux-mips.org/wiki/DECstation>
3174
3175config MMU
3176 bool
3177 default y
3178
3179config ARCH_MMAP_RND_BITS_MIN
3180 default 12 if 64BIT
3181 default 8
3182
3183config ARCH_MMAP_RND_BITS_MAX
3184 default 18 if 64BIT
3185 default 15
3186
3187config ARCH_MMAP_RND_COMPAT_BITS_MIN
3188 default 8
3189
3190config ARCH_MMAP_RND_COMPAT_BITS_MAX
3191 default 15
3192
3193config I8253
3194 bool
3195 select CLKSRC_I8253
3196 select CLKEVT_I8253
3197 select MIPS_EXTERNAL_TIMER
3198
3199config ZONE_DMA
3200 bool
3201
3202config ZONE_DMA32
3203 bool
3204
3205endmenu
3206
3207config TRAD_SIGNALS
3208 bool
3209
3210config MIPS32_COMPAT
3211 bool
3212
3213config COMPAT
3214 bool
3215
3216config SYSVIPC_COMPAT
3217 bool
3218
3219config MIPS32_O32
3220 bool "Kernel support for o32 binaries"
3221 depends on 64BIT
3222 select ARCH_WANT_OLD_COMPAT_IPC
3223 select COMPAT
3224 select MIPS32_COMPAT
3225 select SYSVIPC_COMPAT if SYSVIPC
3226 help
3227 Select this option if you want to run o32 binaries. These are pure
3228 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3229 existing binaries are in this format.
3230
3231 If unsure, say Y.
3232
3233config MIPS32_N32
3234 bool "Kernel support for n32 binaries"
3235 depends on 64BIT
3236 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3237 select COMPAT
3238 select MIPS32_COMPAT
3239 select SYSVIPC_COMPAT if SYSVIPC
3240 help
3241 Select this option if you want to run n32 binaries. These are
3242 64-bit binaries using 32-bit quantities for addressing and certain
3243 data that would normally be 64-bit. They are used in special
3244 cases.
3245
3246 If unsure, say N.
3247
3248config BINFMT_ELF32
3249 bool
3250 default y if MIPS32_O32 || MIPS32_N32
3251 select ELFCORE
3252
3253menu "Power management options"
3254
3255config ARCH_HIBERNATION_POSSIBLE
3256 def_bool y
3257 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3258
3259config ARCH_SUSPEND_POSSIBLE
3260 def_bool y
3261 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3262
3263source "kernel/power/Kconfig"
3264
3265endmenu
3266
3267config MIPS_EXTERNAL_TIMER
3268 bool
3269
3270menu "CPU Power Management"
3271
3272if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3273source "drivers/cpufreq/Kconfig"
3274endif
3275
3276source "drivers/cpuidle/Kconfig"
3277
3278endmenu
3279
3280source "drivers/firmware/Kconfig"
3281
3282source "arch/mips/kvm/Kconfig"
3283
3284source "arch/mips/vdso/Kconfig"