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1config 64BIT
2 bool "64-bit kernel" if ARCH = "sparc"
3 default ARCH = "sparc64"
4 help
5 SPARC is a family of RISC microprocessors designed and marketed by
6 Sun Microsystems, incorporated. They are very widely found in Sun
7 workstations and clones.
8
9 Say yes to build a 64-bit kernel - formerly known as sparc64
10 Say no to build a 32-bit kernel - formerly known as sparc
11
12config SPARC
13 bool
14 default y
15 select OF
16 select OF_PROMTREE
17 select HAVE_IDE
18 select HAVE_OPROFILE
19 select HAVE_ARCH_KGDB if !SMP || SPARC64
20 select HAVE_ARCH_TRACEHOOK
21 select ARCH_WANT_OPTIONAL_GPIOLIB
22 select RTC_CLASS
23 select RTC_DRV_M48T59
24 select HAVE_IRQ_WORK
25 select HAVE_DMA_ATTRS
26 select HAVE_DMA_API_DEBUG
27 select HAVE_ARCH_JUMP_LABEL
28 select HAVE_GENERIC_HARDIRQS
29 select GENERIC_IRQ_SHOW
30 select USE_GENERIC_SMP_HELPERS if SMP
31 select GENERIC_PCI_IOMAP
32 select HAVE_NMI_WATCHDOG if SPARC64
33 select HAVE_BPF_JIT
34 select GENERIC_SMP_IDLE_THREAD
35 select GENERIC_CMOS_UPDATE
36 select GENERIC_CLOCKEVENTS
37 select GENERIC_STRNCPY_FROM_USER
38 select GENERIC_STRNLEN_USER
39
40config SPARC32
41 def_bool !64BIT
42 select GENERIC_ATOMIC64
43 select CLZ_TAB
44
45config SPARC64
46 def_bool 64BIT
47 select ARCH_SUPPORTS_MSI
48 select HAVE_FUNCTION_TRACER
49 select HAVE_FUNCTION_GRAPH_TRACER
50 select HAVE_FUNCTION_GRAPH_FP_TEST
51 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
52 select HAVE_KRETPROBES
53 select HAVE_KPROBES
54 select HAVE_RCU_TABLE_FREE if SMP
55 select HAVE_MEMBLOCK
56 select HAVE_MEMBLOCK_NODE_MAP
57 select HAVE_SYSCALL_WRAPPERS
58 select HAVE_DYNAMIC_FTRACE
59 select HAVE_FTRACE_MCOUNT_RECORD
60 select HAVE_SYSCALL_TRACEPOINTS
61 select RTC_DRV_CMOS
62 select RTC_DRV_BQ4802
63 select RTC_DRV_SUN4V
64 select RTC_DRV_STARFIRE
65 select HAVE_PERF_EVENTS
66 select PERF_USE_VMALLOC
67 select IRQ_PREFLOW_FASTEOI
68 select ARCH_HAVE_NMI_SAFE_CMPXCHG
69 select HAVE_C_RECORDMCOUNT
70 select NO_BOOTMEM
71
72config ARCH_DEFCONFIG
73 string
74 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
75 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
76
77# CONFIG_BITS can be used at source level to get 32/64 bits
78config BITS
79 int
80 default 32 if SPARC32
81 default 64 if SPARC64
82
83config IOMMU_HELPER
84 bool
85 default y if SPARC64
86
87config STACKTRACE_SUPPORT
88 bool
89 default y if SPARC64
90
91config LOCKDEP_SUPPORT
92 bool
93 default y if SPARC64
94
95config HAVE_LATENCYTOP_SUPPORT
96 bool
97 default y if SPARC64
98
99config AUDIT_ARCH
100 bool
101 default y
102
103config HAVE_SETUP_PER_CPU_AREA
104 def_bool y if SPARC64
105
106config NEED_PER_CPU_EMBED_FIRST_CHUNK
107 def_bool y if SPARC64
108
109config NEED_PER_CPU_PAGE_FIRST_CHUNK
110 def_bool y if SPARC64
111
112config MMU
113 bool
114 default y
115
116config HIGHMEM
117 bool
118 default y if SPARC32
119
120config ZONE_DMA
121 bool
122 default y if SPARC32
123
124config NEED_DMA_MAP_STATE
125 def_bool y
126
127config NEED_SG_DMA_LENGTH
128 def_bool y
129
130config GENERIC_ISA_DMA
131 bool
132 default y if SPARC32
133
134config GENERIC_GPIO
135 bool
136 help
137 Generic GPIO API support
138
139config ARCH_NO_VIRT_TO_BUS
140 def_bool y
141
142config ARCH_SUPPORTS_DEBUG_PAGEALLOC
143 def_bool y if SPARC64
144
145source "init/Kconfig"
146
147source "kernel/Kconfig.freezer"
148
149menu "Processor type and features"
150
151config SMP
152 bool "Symmetric multi-processing support"
153 ---help---
154 This enables support for systems with more than one CPU. If you have
155 a system with only one CPU, say N. If you have a system with more
156 than one CPU, say Y.
157
158 If you say N here, the kernel will run on single and multiprocessor
159 machines, but will use only one CPU of a multiprocessor machine. If
160 you say Y here, the kernel will run on many, but not all,
161 singleprocessor machines. On a singleprocessor machine, the kernel
162 will run faster if you say N here.
163
164 People using multiprocessor machines who say Y here should also say
165 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
166 Management" code will be disabled if you say Y here.
167
168 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
169 available at <http://www.tldp.org/docs.html#howto>.
170
171 If you don't know what to do here, say N.
172
173config NR_CPUS
174 int "Maximum number of CPUs"
175 depends on SMP
176 range 2 32 if SPARC32
177 range 2 1024 if SPARC64
178 default 32 if SPARC32
179 default 64 if SPARC64
180
181source kernel/Kconfig.hz
182
183config RWSEM_GENERIC_SPINLOCK
184 bool
185 default y if SPARC32
186
187config RWSEM_XCHGADD_ALGORITHM
188 bool
189 default y if SPARC64
190
191config GENERIC_HWEIGHT
192 bool
193 default y if !ULTRA_HAS_POPULATION_COUNT
194
195config GENERIC_CALIBRATE_DELAY
196 bool
197 default y
198
199config ARCH_MAY_HAVE_PC_FDC
200 bool
201 default y
202
203config EMULATED_CMPXCHG
204 bool
205 default y if SPARC32
206 help
207 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
208 is emulated, and therefore it is not completely atomic.
209
210# Makefile helpers
211config SPARC32_SMP
212 bool
213 default y
214 depends on SPARC32 && SMP
215
216config SPARC64_SMP
217 bool
218 default y
219 depends on SPARC64 && SMP
220
221config EARLYFB
222 bool "Support for early boot text console"
223 default y
224 depends on SPARC64
225 help
226 Say Y here to enable a faster early framebuffer boot console.
227
228choice
229 prompt "Kernel page size" if SPARC64
230 default SPARC64_PAGE_SIZE_8KB
231
232config SPARC64_PAGE_SIZE_8KB
233 bool "8KB"
234 help
235 This lets you select the page size of the kernel.
236
237 8KB and 64KB work quite well, since SPARC ELF sections
238 provide for up to 64KB alignment.
239
240 If you don't know what to do, choose 8KB.
241
242config SPARC64_PAGE_SIZE_64KB
243 bool "64KB"
244
245endchoice
246
247config SECCOMP
248 bool "Enable seccomp to safely compute untrusted bytecode"
249 depends on SPARC64 && PROC_FS
250 default y
251 help
252 This kernel feature is useful for number crunching applications
253 that may need to compute untrusted bytecode during their
254 execution. By using pipes or other transports made available to
255 the process as file descriptors supporting the read/write
256 syscalls, it's possible to isolate those applications in
257 their own address space using seccomp. Once seccomp is
258 enabled via /proc/<pid>/seccomp, it cannot be disabled
259 and the task is only allowed to execute a few safe syscalls
260 defined by each seccomp mode.
261
262 If unsure, say Y. Only embedded should say N here.
263
264config HOTPLUG_CPU
265 bool "Support for hot-pluggable CPUs"
266 depends on SPARC64 && SMP
267 select HOTPLUG
268 help
269 Say Y here to experiment with turning CPUs off and on. CPUs
270 can be controlled through /sys/devices/system/cpu/cpu#.
271 Say N if you want to disable CPU hotplug.
272
273if SPARC64
274source "drivers/cpufreq/Kconfig"
275
276config US3_FREQ
277 tristate "UltraSPARC-III CPU Frequency driver"
278 depends on CPU_FREQ
279 select CPU_FREQ_TABLE
280 help
281 This adds the CPUFreq driver for UltraSPARC-III processors.
282
283 For details, take a look at <file:Documentation/cpu-freq>.
284
285 If in doubt, say N.
286
287config US2E_FREQ
288 tristate "UltraSPARC-IIe CPU Frequency driver"
289 depends on CPU_FREQ
290 select CPU_FREQ_TABLE
291 help
292 This adds the CPUFreq driver for UltraSPARC-IIe processors.
293
294 For details, take a look at <file:Documentation/cpu-freq>.
295
296 If in doubt, say N.
297
298endif
299
300config US3_MC
301 tristate "UltraSPARC-III Memory Controller driver"
302 depends on SPARC64
303 default y
304 help
305 This adds a driver for the UltraSPARC-III memory controller.
306 Loading this driver allows exact mnemonic strings to be
307 printed in the event of a memory error, so that the faulty DIMM
308 on the motherboard can be matched to the error.
309
310 If in doubt, say Y, as this information can be very useful.
311
312# Global things across all Sun machines.
313config GENERIC_LOCKBREAK
314 bool
315 default y
316 depends on SPARC64 && SMP && PREEMPT
317
318choice
319 prompt "SPARC64 Huge TLB Page Size"
320 depends on SPARC64 && HUGETLB_PAGE
321 default HUGETLB_PAGE_SIZE_4MB
322
323config HUGETLB_PAGE_SIZE_4MB
324 bool "4MB"
325
326config HUGETLB_PAGE_SIZE_512K
327 bool "512K"
328
329config HUGETLB_PAGE_SIZE_64K
330 depends on !SPARC64_PAGE_SIZE_64KB
331 bool "64K"
332
333endchoice
334
335config NUMA
336 bool "NUMA support"
337 depends on SPARC64 && SMP
338
339config NODES_SHIFT
340 int
341 default "4"
342 depends on NEED_MULTIPLE_NODES
343
344# Some NUMA nodes have memory ranges that span
345# other nodes. Even though a pfn is valid and
346# between a node's start and end pfns, it may not
347# reside on that node. See memmap_init_zone()
348# for details.
349config NODES_SPAN_OTHER_NODES
350 def_bool y
351 depends on NEED_MULTIPLE_NODES
352
353config ARCH_SELECT_MEMORY_MODEL
354 def_bool y if SPARC64
355
356config ARCH_SPARSEMEM_ENABLE
357 def_bool y if SPARC64
358 select SPARSEMEM_VMEMMAP_ENABLE
359
360config ARCH_SPARSEMEM_DEFAULT
361 def_bool y if SPARC64
362
363source "mm/Kconfig"
364
365config SCHED_SMT
366 bool "SMT (Hyperthreading) scheduler support"
367 depends on SPARC64 && SMP
368 default y
369 help
370 SMT scheduler support improves the CPU scheduler's decision making
371 when dealing with SPARC cpus at a cost of slightly increased overhead
372 in some places. If unsure say N here.
373
374config SCHED_MC
375 bool "Multi-core scheduler support"
376 depends on SPARC64 && SMP
377 default y
378 help
379 Multi-core scheduler support improves the CPU scheduler's decision
380 making when dealing with multi-core CPU chips at a cost of slightly
381 increased overhead in some places. If unsure say N here.
382
383source "kernel/Kconfig.preempt"
384
385config CMDLINE_BOOL
386 bool "Default bootloader kernel arguments"
387 depends on SPARC64
388
389config CMDLINE
390 string "Initial kernel command string"
391 depends on CMDLINE_BOOL
392 default "console=ttyS0,9600 root=/dev/sda1"
393 help
394 Say Y here if you want to be able to pass default arguments to
395 the kernel. This will be overridden by the bootloader, if you
396 use one (such as SILO). This is most useful if you want to boot
397 a kernel from TFTP, and want default options to be available
398 with having them passed on the command line.
399
400 NOTE: This option WILL override the PROM bootargs setting!
401
402config SUN_PM
403 bool
404 default y if SPARC32
405 help
406 Enable power management and CPU standby features on supported
407 SPARC platforms.
408
409config SPARC_LED
410 tristate "Sun4m LED driver"
411 depends on SPARC32
412 help
413 This driver toggles the front-panel LED on sun4m systems
414 in a user-specifiable manner. Its state can be probed
415 by reading /proc/led and its blinking mode can be changed
416 via writes to /proc/led
417
418config SERIAL_CONSOLE
419 bool
420 depends on SPARC32
421 default y
422 ---help---
423 If you say Y here, it will be possible to use a serial port as the
424 system console (the system console is the device which receives all
425 kernel messages and warnings and which allows logins in single user
426 mode). This could be useful if some terminal or printer is connected
427 to that serial port.
428
429 Even if you say Y here, the currently visible virtual console
430 (/dev/tty0) will still be used as the system console by default, but
431 you can alter that using a kernel command line option such as
432 "console=ttyS1". (Try "man bootparam" or see the documentation of
433 your boot loader (silo) about how to pass options to the kernel at
434 boot time.)
435
436 If you don't have a graphics card installed and you say Y here, the
437 kernel will automatically use the first serial line, /dev/ttyS0, as
438 system console.
439
440 If unsure, say N.
441
442config SPARC_LEON
443 bool "Sparc Leon processor family"
444 depends on SPARC32
445 ---help---
446 If you say Y here if you are running on a SPARC-LEON processor.
447 The LEON processor is a synthesizable VHDL model of the
448 SPARC-v8 standard. LEON is part of the GRLIB collection of
449 IP cores that are distributed under GPL. GRLIB can be downloaded
450 from www.gaisler.com. You can download a sparc-linux cross-compilation
451 toolchain at www.gaisler.com.
452
453if SPARC_LEON
454menu "U-Boot options"
455
456config UBOOT_LOAD_ADDR
457 hex "uImage Load Address"
458 default 0x40004000
459 ---help---
460 U-Boot kernel load address, the address in physical address space
461 where u-boot will place the Linux kernel before booting it.
462 This address is normally the base address of main memory + 0x4000.
463
464config UBOOT_FLASH_ADDR
465 hex "uImage.o Load Address"
466 default 0x00080000
467 ---help---
468 Optional setting only affecting the uImage.o ELF-image used to
469 download the uImage file to the target using a ELF-loader other than
470 U-Boot. It may for example be used to download an uImage to FLASH with
471 the GRMON utility before even starting u-boot.
472
473config UBOOT_ENTRY_ADDR
474 hex "uImage Entry Address"
475 default 0xf0004000
476 ---help---
477 Do not change this unless you know what you're doing. This is
478 hardcoded by the SPARC32 and LEON port.
479
480 This is the virtual address u-boot jumps to when booting the Linux
481 Kernel.
482
483endmenu
484endif
485
486endmenu
487
488menu "Bus options (PCI etc.)"
489config SBUS
490 bool
491 default y
492
493config SBUSCHAR
494 bool
495 default y
496
497config SUN_LDOMS
498 bool "Sun Logical Domains support"
499 depends on SPARC64
500 help
501 Say Y here is you want to support virtual devices via
502 Logical Domains.
503
504config PCI
505 bool "Support for PCI and PS/2 keyboard/mouse"
506 help
507 Find out whether your system includes a PCI bus. PCI is the name of
508 a bus system, i.e. the way the CPU talks to the other stuff inside
509 your box. If you say Y here, the kernel will include drivers and
510 infrastructure code to support PCI bus devices.
511
512 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
513 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
514 All of these platforms are extremely obscure, so say N if unsure.
515
516config PCI_DOMAINS
517 def_bool PCI if SPARC64
518
519config PCI_SYSCALL
520 def_bool PCI
521
522config PCIC_PCI
523 bool
524 depends on PCI && SPARC32 && !SPARC_LEON
525 default y
526
527config LEON_PCI
528 bool
529 depends on PCI && SPARC_LEON
530 default y
531
532config GRPCI2
533 bool "GRPCI2 Host Bridge Support"
534 depends on LEON_PCI
535 default y
536 help
537 Say Y here to include the GRPCI2 Host Bridge Driver.
538
539source "drivers/pci/Kconfig"
540
541source "drivers/pcmcia/Kconfig"
542
543config SUN_OPENPROMFS
544 tristate "Openprom tree appears in /proc/openprom"
545 help
546 If you say Y, the OpenPROM device tree will be available as a
547 virtual file system, which you can mount to /proc/openprom by "mount
548 -t openpromfs none /proc/openprom".
549
550 To compile the /proc/openprom support as a module, choose M here: the
551 module will be called openpromfs.
552
553 Only choose N if you know in advance that you will not need to modify
554 OpenPROM settings on the running system.
555
556# Makefile helper
557config SPARC64_PCI
558 bool
559 default y
560 depends on SPARC64 && PCI
561
562endmenu
563
564menu "Executable file formats"
565
566source "fs/Kconfig.binfmt"
567
568config COMPAT
569 bool
570 depends on SPARC64
571 default y
572 select COMPAT_BINFMT_ELF
573 select ARCH_WANT_OLD_COMPAT_IPC
574
575config SYSVIPC_COMPAT
576 bool
577 depends on COMPAT && SYSVIPC
578 default y
579
580config KEYS_COMPAT
581 def_bool y if COMPAT && KEYS
582
583endmenu
584
585source "net/Kconfig"
586
587source "drivers/Kconfig"
588
589source "drivers/sbus/char/Kconfig"
590
591source "fs/Kconfig"
592
593source "arch/sparc/Kconfig.debug"
594
595source "security/Kconfig"
596
597source "crypto/Kconfig"
598
599source "lib/Kconfig"
1config 64BIT
2 bool "64-bit kernel" if ARCH = "sparc"
3 default ARCH = "sparc64"
4 help
5 SPARC is a family of RISC microprocessors designed and marketed by
6 Sun Microsystems, incorporated. They are very widely found in Sun
7 workstations and clones.
8
9 Say yes to build a 64-bit kernel - formerly known as sparc64
10 Say no to build a 32-bit kernel - formerly known as sparc
11
12config SPARC
13 bool
14 default y
15 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
16 select ARCH_MIGHT_HAVE_PC_SERIO
17 select OF
18 select OF_PROMTREE
19 select HAVE_IDE
20 select HAVE_OPROFILE
21 select HAVE_ARCH_KGDB if !SMP || SPARC64
22 select HAVE_ARCH_TRACEHOOK
23 select HAVE_EXIT_THREAD
24 select SYSCTL_EXCEPTION_TRACE
25 select RTC_CLASS
26 select RTC_DRV_M48T59
27 select RTC_SYSTOHC
28 select HAVE_DMA_API_DEBUG
29 select HAVE_ARCH_JUMP_LABEL if SPARC64
30 select GENERIC_IRQ_SHOW
31 select ARCH_WANT_IPC_PARSE_VERSION
32 select GENERIC_PCI_IOMAP
33 select HAVE_NMI_WATCHDOG if SPARC64
34 select HAVE_CBPF_JIT if SPARC32
35 select HAVE_EBPF_JIT if SPARC64
36 select HAVE_DEBUG_BUGVERBOSE
37 select GENERIC_SMP_IDLE_THREAD
38 select GENERIC_CLOCKEVENTS
39 select GENERIC_STRNCPY_FROM_USER
40 select GENERIC_STRNLEN_USER
41 select MODULES_USE_ELF_RELA
42 select ODD_RT_SIGACTION
43 select OLD_SIGSUSPEND
44 select ARCH_HAS_SG_CHAIN
45 select CPU_NO_EFFICIENT_FFS
46 select LOCKDEP_SMALL if LOCKDEP
47
48config SPARC32
49 def_bool !64BIT
50 select GENERIC_ATOMIC64
51 select CLZ_TAB
52 select HAVE_UID16
53 select OLD_SIGACTION
54
55config SPARC64
56 def_bool 64BIT
57 select HAVE_FUNCTION_TRACER
58 select HAVE_FUNCTION_GRAPH_TRACER
59 select HAVE_KRETPROBES
60 select HAVE_KPROBES
61 select HAVE_RCU_TABLE_FREE if SMP
62 select HAVE_MEMBLOCK
63 select HAVE_MEMBLOCK_NODE_MAP
64 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
65 select HAVE_DYNAMIC_FTRACE
66 select HAVE_FTRACE_MCOUNT_RECORD
67 select HAVE_SYSCALL_TRACEPOINTS
68 select HAVE_CONTEXT_TRACKING
69 select HAVE_DEBUG_KMEMLEAK
70 select SPARSE_IRQ
71 select RTC_DRV_CMOS
72 select RTC_DRV_BQ4802
73 select RTC_DRV_SUN4V
74 select RTC_DRV_STARFIRE
75 select HAVE_PERF_EVENTS
76 select PERF_USE_VMALLOC
77 select IRQ_PREFLOW_FASTEOI
78 select ARCH_HAVE_NMI_SAFE_CMPXCHG
79 select HAVE_C_RECORDMCOUNT
80 select NO_BOOTMEM
81 select HAVE_ARCH_AUDITSYSCALL
82 select ARCH_SUPPORTS_ATOMIC_RMW
83 select HAVE_NMI
84 select HAVE_REGS_AND_STACK_ACCESS_API
85 select ARCH_USE_QUEUED_RWLOCKS
86 select ARCH_USE_QUEUED_SPINLOCKS
87 select GENERIC_TIME_VSYSCALL
88 select ARCH_CLOCKSOURCE_DATA
89
90config ARCH_DEFCONFIG
91 string
92 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
93 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
94
95config ARCH_PROC_KCORE_TEXT
96 def_bool y
97
98config CPU_BIG_ENDIAN
99 def_bool y
100
101config ARCH_ATU
102 bool
103 default y if SPARC64
104
105config ARCH_DMA_ADDR_T_64BIT
106 bool
107 default y if ARCH_ATU
108
109config IOMMU_HELPER
110 bool
111 default y if SPARC64
112
113config STACKTRACE_SUPPORT
114 bool
115 default y if SPARC64
116
117config LOCKDEP_SUPPORT
118 bool
119 default y if SPARC64
120
121config ARCH_HIBERNATION_POSSIBLE
122 def_bool y if SPARC64
123
124config AUDIT_ARCH
125 bool
126 default y
127
128config HAVE_SETUP_PER_CPU_AREA
129 def_bool y if SPARC64
130
131config NEED_PER_CPU_EMBED_FIRST_CHUNK
132 def_bool y if SPARC64
133
134config NEED_PER_CPU_PAGE_FIRST_CHUNK
135 def_bool y if SPARC64
136
137config MMU
138 bool
139 default y
140
141config HIGHMEM
142 bool
143 default y if SPARC32
144
145config ZONE_DMA
146 bool
147 default y if SPARC32
148
149config NEED_DMA_MAP_STATE
150 def_bool y
151
152config NEED_SG_DMA_LENGTH
153 def_bool y
154
155config GENERIC_ISA_DMA
156 bool
157 default y if SPARC32
158
159config ARCH_SUPPORTS_DEBUG_PAGEALLOC
160 def_bool y if SPARC64
161
162config PGTABLE_LEVELS
163 default 4 if 64BIT
164 default 3
165
166config ARCH_SUPPORTS_UPROBES
167 def_bool y if SPARC64
168
169source "init/Kconfig"
170
171source "kernel/Kconfig.freezer"
172
173menu "Processor type and features"
174
175config SMP
176 bool "Symmetric multi-processing support"
177 ---help---
178 This enables support for systems with more than one CPU. If you have
179 a system with only one CPU, say N. If you have a system with more
180 than one CPU, say Y.
181
182 If you say N here, the kernel will run on uni- and multiprocessor
183 machines, but will use only one CPU of a multiprocessor machine. If
184 you say Y here, the kernel will run on many, but not all,
185 uniprocessor machines. On a uniprocessor machine, the kernel
186 will run faster if you say N here.
187
188 People using multiprocessor machines who say Y here should also say
189 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
190 Management" code will be disabled if you say Y here.
191
192 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
193 available at <http://www.tldp.org/docs.html#howto>.
194
195 If you don't know what to do here, say N.
196
197config NR_CPUS
198 int "Maximum number of CPUs"
199 depends on SMP
200 range 2 32 if SPARC32
201 range 2 4096 if SPARC64
202 default 32 if SPARC32
203 default 4096 if SPARC64
204
205source kernel/Kconfig.hz
206
207config RWSEM_GENERIC_SPINLOCK
208 bool
209 default y if SPARC32
210
211config RWSEM_XCHGADD_ALGORITHM
212 bool
213 default y if SPARC64
214
215config GENERIC_HWEIGHT
216 bool
217 default y
218
219config GENERIC_CALIBRATE_DELAY
220 bool
221 default y
222
223config ARCH_MAY_HAVE_PC_FDC
224 bool
225 default y
226
227config EMULATED_CMPXCHG
228 bool
229 default y if SPARC32
230 help
231 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
232 is emulated, and therefore it is not completely atomic.
233
234# Makefile helpers
235config SPARC32_SMP
236 bool
237 default y
238 depends on SPARC32 && SMP
239
240config SPARC64_SMP
241 bool
242 default y
243 depends on SPARC64 && SMP
244
245config EARLYFB
246 bool "Support for early boot text console"
247 default y
248 depends on SPARC64
249 help
250 Say Y here to enable a faster early framebuffer boot console.
251
252config SECCOMP
253 bool "Enable seccomp to safely compute untrusted bytecode"
254 depends on SPARC64 && PROC_FS
255 default y
256 help
257 This kernel feature is useful for number crunching applications
258 that may need to compute untrusted bytecode during their
259 execution. By using pipes or other transports made available to
260 the process as file descriptors supporting the read/write
261 syscalls, it's possible to isolate those applications in
262 their own address space using seccomp. Once seccomp is
263 enabled via /proc/<pid>/seccomp, it cannot be disabled
264 and the task is only allowed to execute a few safe syscalls
265 defined by each seccomp mode.
266
267 If unsure, say Y. Only embedded should say N here.
268
269config HOTPLUG_CPU
270 bool "Support for hot-pluggable CPUs"
271 depends on SPARC64 && SMP
272 help
273 Say Y here to experiment with turning CPUs off and on. CPUs
274 can be controlled through /sys/devices/system/cpu/cpu#.
275 Say N if you want to disable CPU hotplug.
276
277if SPARC64
278source "drivers/cpufreq/Kconfig"
279endif
280
281config US3_MC
282 tristate "UltraSPARC-III Memory Controller driver"
283 depends on SPARC64
284 default y
285 help
286 This adds a driver for the UltraSPARC-III memory controller.
287 Loading this driver allows exact mnemonic strings to be
288 printed in the event of a memory error, so that the faulty DIMM
289 on the motherboard can be matched to the error.
290
291 If in doubt, say Y, as this information can be very useful.
292
293# Global things across all Sun machines.
294config GENERIC_LOCKBREAK
295 bool
296 default y
297 depends on SPARC64 && SMP && PREEMPT
298
299config NUMA
300 bool "NUMA support"
301 depends on SPARC64 && SMP
302
303config NODES_SHIFT
304 int "Maximum NUMA Nodes (as a power of 2)"
305 range 4 5 if SPARC64
306 default "5"
307 depends on NEED_MULTIPLE_NODES
308 help
309 Specify the maximum number of NUMA Nodes available on the target
310 system. Increases memory reserved to accommodate various tables.
311
312# Some NUMA nodes have memory ranges that span
313# other nodes. Even though a pfn is valid and
314# between a node's start and end pfns, it may not
315# reside on that node. See memmap_init_zone()
316# for details.
317config NODES_SPAN_OTHER_NODES
318 def_bool y
319 depends on NEED_MULTIPLE_NODES
320
321config ARCH_SELECT_MEMORY_MODEL
322 def_bool y if SPARC64
323
324config ARCH_SPARSEMEM_ENABLE
325 def_bool y if SPARC64
326 select SPARSEMEM_VMEMMAP_ENABLE
327
328config ARCH_SPARSEMEM_DEFAULT
329 def_bool y if SPARC64
330
331config FORCE_MAX_ZONEORDER
332 int "Maximum zone order"
333 default "13"
334 help
335 The kernel memory allocator divides physically contiguous memory
336 blocks into "zones", where each zone is a power of two number of
337 pages. This option selects the largest power of two that the kernel
338 keeps in the memory allocator. If you need to allocate very large
339 blocks of physically contiguous memory, then you may need to
340 increase this value.
341
342 This config option is actually maximum order plus one. For example,
343 a value of 13 means that the largest free memory block is 2^12 pages.
344
345source "mm/Kconfig"
346
347if SPARC64
348source "kernel/power/Kconfig"
349endif
350
351config SCHED_SMT
352 bool "SMT (Hyperthreading) scheduler support"
353 depends on SPARC64 && SMP
354 default y
355 help
356 SMT scheduler support improves the CPU scheduler's decision making
357 when dealing with SPARC cpus at a cost of slightly increased overhead
358 in some places. If unsure say N here.
359
360config SCHED_MC
361 bool "Multi-core scheduler support"
362 depends on SPARC64 && SMP
363 default y
364 help
365 Multi-core scheduler support improves the CPU scheduler's decision
366 making when dealing with multi-core CPU chips at a cost of slightly
367 increased overhead in some places. If unsure say N here.
368
369source "kernel/Kconfig.preempt"
370
371config CMDLINE_BOOL
372 bool "Default bootloader kernel arguments"
373 depends on SPARC64
374
375config CMDLINE
376 string "Initial kernel command string"
377 depends on CMDLINE_BOOL
378 default "console=ttyS0,9600 root=/dev/sda1"
379 help
380 Say Y here if you want to be able to pass default arguments to
381 the kernel. This will be overridden by the bootloader, if you
382 use one (such as SILO). This is most useful if you want to boot
383 a kernel from TFTP, and want default options to be available
384 with having them passed on the command line.
385
386 NOTE: This option WILL override the PROM bootargs setting!
387
388config SUN_PM
389 bool
390 default y if SPARC32
391 help
392 Enable power management and CPU standby features on supported
393 SPARC platforms.
394
395config SPARC_LED
396 tristate "Sun4m LED driver"
397 depends on SPARC32
398 help
399 This driver toggles the front-panel LED on sun4m systems
400 in a user-specifiable manner. Its state can be probed
401 by reading /proc/led and its blinking mode can be changed
402 via writes to /proc/led
403
404config SERIAL_CONSOLE
405 bool
406 depends on SPARC32
407 default y
408 ---help---
409 If you say Y here, it will be possible to use a serial port as the
410 system console (the system console is the device which receives all
411 kernel messages and warnings and which allows logins in single user
412 mode). This could be useful if some terminal or printer is connected
413 to that serial port.
414
415 Even if you say Y here, the currently visible virtual console
416 (/dev/tty0) will still be used as the system console by default, but
417 you can alter that using a kernel command line option such as
418 "console=ttyS1". (Try "man bootparam" or see the documentation of
419 your boot loader (silo) about how to pass options to the kernel at
420 boot time.)
421
422 If you don't have a graphics card installed and you say Y here, the
423 kernel will automatically use the first serial line, /dev/ttyS0, as
424 system console.
425
426 If unsure, say N.
427
428config SPARC_LEON
429 bool "Sparc Leon processor family"
430 depends on SPARC32
431 select USB_EHCI_BIG_ENDIAN_MMIO
432 select USB_EHCI_BIG_ENDIAN_DESC
433 select USB_UHCI_BIG_ENDIAN_MMIO
434 select USB_UHCI_BIG_ENDIAN_DESC
435 ---help---
436 If you say Y here if you are running on a SPARC-LEON processor.
437 The LEON processor is a synthesizable VHDL model of the
438 SPARC-v8 standard. LEON is part of the GRLIB collection of
439 IP cores that are distributed under GPL. GRLIB can be downloaded
440 from www.gaisler.com. You can download a sparc-linux cross-compilation
441 toolchain at www.gaisler.com.
442
443if SPARC_LEON
444menu "U-Boot options"
445
446config UBOOT_LOAD_ADDR
447 hex "uImage Load Address"
448 default 0x40004000
449 ---help---
450 U-Boot kernel load address, the address in physical address space
451 where u-boot will place the Linux kernel before booting it.
452 This address is normally the base address of main memory + 0x4000.
453
454config UBOOT_FLASH_ADDR
455 hex "uImage.o Load Address"
456 default 0x00080000
457 ---help---
458 Optional setting only affecting the uImage.o ELF-image used to
459 download the uImage file to the target using a ELF-loader other than
460 U-Boot. It may for example be used to download an uImage to FLASH with
461 the GRMON utility before even starting u-boot.
462
463config UBOOT_ENTRY_ADDR
464 hex "uImage Entry Address"
465 default 0xf0004000
466 ---help---
467 Do not change this unless you know what you're doing. This is
468 hardcoded by the SPARC32 and LEON port.
469
470 This is the virtual address u-boot jumps to when booting the Linux
471 Kernel.
472
473endmenu
474endif
475
476endmenu
477
478menu "Bus options (PCI etc.)"
479config SBUS
480 bool
481 default y
482
483config SBUSCHAR
484 bool
485 default y
486
487config SUN_LDOMS
488 bool "Sun Logical Domains support"
489 depends on SPARC64
490 help
491 Say Y here is you want to support virtual devices via
492 Logical Domains.
493
494config PCI
495 bool "Support for PCI and PS/2 keyboard/mouse"
496 help
497 Find out whether your system includes a PCI bus. PCI is the name of
498 a bus system, i.e. the way the CPU talks to the other stuff inside
499 your box. If you say Y here, the kernel will include drivers and
500 infrastructure code to support PCI bus devices.
501
502 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
503 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
504 All of these platforms are extremely obscure, so say N if unsure.
505
506config PCI_DOMAINS
507 def_bool PCI if SPARC64
508
509config PCI_SYSCALL
510 def_bool PCI
511
512config PCIC_PCI
513 bool
514 depends on PCI && SPARC32 && !SPARC_LEON
515 default y
516
517config LEON_PCI
518 bool
519 depends on PCI && SPARC_LEON
520 default y
521
522config SPARC_GRPCI1
523 bool "GRPCI Host Bridge Support"
524 depends on LEON_PCI
525 default y
526 help
527 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
528 PCI host controller is typically found in GRLIB SPARC32/LEON
529 systems. The driver has one property (all_pci_errors) controlled
530 from the bootloader that makes the GRPCI to generate interrupts
531 on detected PCI Parity and System errors.
532
533config SPARC_GRPCI2
534 bool "GRPCI2 Host Bridge Support"
535 depends on LEON_PCI
536 default y
537 help
538 Say Y here to include the GRPCI2 Host Bridge Driver.
539
540source "drivers/pci/Kconfig"
541
542source "drivers/pcmcia/Kconfig"
543
544config SUN_OPENPROMFS
545 tristate "Openprom tree appears in /proc/openprom"
546 help
547 If you say Y, the OpenPROM device tree will be available as a
548 virtual file system, which you can mount to /proc/openprom by "mount
549 -t openpromfs none /proc/openprom".
550
551 To compile the /proc/openprom support as a module, choose M here: the
552 module will be called openpromfs.
553
554 Only choose N if you know in advance that you will not need to modify
555 OpenPROM settings on the running system.
556
557# Makefile helpers
558config SPARC64_PCI
559 bool
560 default y
561 depends on SPARC64 && PCI
562
563config SPARC64_PCI_MSI
564 bool
565 default y
566 depends on SPARC64_PCI && PCI_MSI
567
568endmenu
569
570menu "Executable file formats"
571
572source "fs/Kconfig.binfmt"
573
574config COMPAT
575 bool
576 depends on SPARC64
577 default y
578 select COMPAT_BINFMT_ELF
579 select HAVE_UID16
580 select ARCH_WANT_OLD_COMPAT_IPC
581 select COMPAT_OLD_SIGACTION
582
583config SYSVIPC_COMPAT
584 bool
585 depends on COMPAT && SYSVIPC
586 default y
587
588endmenu
589
590source "net/Kconfig"
591
592source "drivers/Kconfig"
593
594source "drivers/sbus/char/Kconfig"
595
596source "fs/Kconfig"
597
598source "arch/sparc/Kconfig.debug"
599
600source "security/Kconfig"
601
602source "crypto/Kconfig"
603
604source "lib/Kconfig"