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1# SPDX-License-Identifier: GPL-2.0-only
2config 64BIT
3 bool "64-bit kernel" if "$(ARCH)" = "sparc"
4 default "$(ARCH)" = "sparc64"
5 help
6 SPARC is a family of RISC microprocessors designed and marketed by
7 Sun Microsystems, incorporated. They are very widely found in Sun
8 workstations and clones.
9
10 Say yes to build a 64-bit kernel - formerly known as sparc64
11 Say no to build a 32-bit kernel - formerly known as sparc
12
13config SPARC
14 bool
15 default y
16 select ARCH_HAS_CPU_CACHE_ALIASING
17 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
18 select ARCH_MIGHT_HAVE_PC_SERIO
19 select DMA_OPS
20 select OF
21 select OF_PROMTREE
22 select HAVE_ASM_MODVERSIONS
23 select HAVE_ARCH_KGDB if !SMP || SPARC64
24 select HAVE_ARCH_TRACEHOOK
25 select HAVE_ARCH_SECCOMP if SPARC64
26 select HAVE_EXIT_THREAD
27 select HAVE_PCI
28 select SYSCTL_EXCEPTION_TRACE
29 select RTC_CLASS
30 select RTC_DRV_M48T59
31 select RTC_SYSTOHC
32 select HAVE_ARCH_JUMP_LABEL if SPARC64
33 select GENERIC_IRQ_SHOW
34 select ARCH_WANT_IPC_PARSE_VERSION
35 select GENERIC_PCI_IOMAP
36 select HAS_IOPORT
37 select HAVE_HARDLOCKUP_DETECTOR_SPARC64 if SPARC64
38 select HAVE_CBPF_JIT if SPARC32
39 select HAVE_EBPF_JIT if SPARC64
40 select HAVE_DEBUG_BUGVERBOSE
41 select GENERIC_SMP_IDLE_THREAD
42 select MODULES_USE_ELF_RELA
43 select PCI_SYSCALL if PCI
44 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
45 select ODD_RT_SIGACTION
46 select OLD_SIGSUSPEND
47 select CPU_NO_EFFICIENT_FFS
48 select LOCKDEP_SMALL if LOCKDEP
49 select NEED_DMA_MAP_STATE
50 select NEED_SG_DMA_LENGTH
51 select TRACE_IRQFLAGS_SUPPORT
52
53config SPARC32
54 def_bool !64BIT
55 select ARCH_32BIT_OFF_T
56 select ARCH_HAS_CPU_FINALIZE_INIT if !SMP
57 select ARCH_HAS_SYNC_DMA_FOR_CPU
58 select CLZ_TAB
59 select DMA_DIRECT_REMAP
60 select GENERIC_ATOMIC64
61 select GENERIC_LIB_CMPDI2
62 select GENERIC_LIB_UCMPDI2
63 select HAVE_UID16
64 select HAVE_PAGE_SIZE_4KB
65 select LOCK_MM_AND_FIND_VMA
66 select OLD_SIGACTION
67 select ZONE_DMA
68
69config SPARC64
70 def_bool 64BIT
71 select ALTERNATE_USER_ADDRESS_SPACE
72 select HAVE_FUNCTION_TRACER
73 select HAVE_FUNCTION_GRAPH_TRACER
74 select HAVE_KRETPROBES
75 select HAVE_KPROBES
76 select MMU_GATHER_RCU_TABLE_FREE if SMP
77 select MMU_GATHER_MERGE_VMAS
78 select MMU_GATHER_NO_FLUSH_CACHE
79 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
80 select HAVE_DYNAMIC_FTRACE
81 select HAVE_FTRACE_MCOUNT_RECORD
82 select HAVE_PAGE_SIZE_8KB
83 select HAVE_SYSCALL_TRACEPOINTS
84 select HAVE_CONTEXT_TRACKING_USER
85 select HAVE_TIF_NOHZ
86 select HAVE_DEBUG_KMEMLEAK
87 select IOMMU_HELPER
88 select SPARSE_IRQ
89 select RTC_DRV_CMOS
90 select RTC_DRV_BQ4802
91 select RTC_DRV_SUN4V
92 select RTC_DRV_STARFIRE
93 select HAVE_PERF_EVENTS
94 select PERF_USE_VMALLOC
95 select ARCH_HAVE_NMI_SAFE_CMPXCHG
96 select HAVE_C_RECORDMCOUNT
97 select HAVE_ARCH_AUDITSYSCALL
98 select ARCH_SUPPORTS_ATOMIC_RMW
99 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
100 select HAVE_NMI
101 select HAVE_REGS_AND_STACK_ACCESS_API
102 select ARCH_USE_QUEUED_RWLOCKS
103 select ARCH_USE_QUEUED_SPINLOCKS
104 select GENERIC_TIME_VSYSCALL
105 select ARCH_CLOCKSOURCE_DATA
106 select ARCH_HAS_PTE_SPECIAL
107 select PCI_DOMAINS if PCI
108 select ARCH_HAS_GIGANTIC_PAGE
109 select HAVE_SOFTIRQ_ON_OWN_STACK
110 select HAVE_SETUP_PER_CPU_AREA
111 select NEED_PER_CPU_EMBED_FIRST_CHUNK
112 select NEED_PER_CPU_PAGE_FIRST_CHUNK
113
114config ARCH_PROC_KCORE_TEXT
115 def_bool y
116
117config CPU_BIG_ENDIAN
118 def_bool y
119
120config STACKTRACE_SUPPORT
121 bool
122 default y if SPARC64
123
124config LOCKDEP_SUPPORT
125 bool
126 default y if SPARC64
127
128config ARCH_HIBERNATION_POSSIBLE
129 def_bool y if SPARC64
130
131config AUDIT_ARCH
132 bool
133 default y
134
135config MMU
136 bool
137 default y
138
139config HIGHMEM
140 bool
141 default y if SPARC32
142 select KMAP_LOCAL
143
144config PGTABLE_LEVELS
145 default 4 if 64BIT
146 default 3
147
148config ARCH_SUPPORTS_UPROBES
149 def_bool y if SPARC64
150
151menu "Processor type and features"
152
153config SMP
154 bool "Symmetric multi-processing support"
155 help
156 This enables support for systems with more than one CPU. If you have
157 a system with only one CPU, say N. If you have a system with more
158 than one CPU, say Y.
159
160 If you say N here, the kernel will run on uni- and multiprocessor
161 machines, but will use only one CPU of a multiprocessor machine. If
162 you say Y here, the kernel will run on many, but not all,
163 uniprocessor machines. On a uniprocessor machine, the kernel
164 will run faster if you say N here.
165
166 People using multiprocessor machines who say Y here should also say
167 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
168 Management" code will be disabled if you say Y here.
169
170 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
171 available at <https://www.tldp.org/docs.html#howto>.
172
173 If you don't know what to do here, say N.
174
175config NR_CPUS
176 int "Maximum number of CPUs"
177 depends on SMP
178 range 2 32 if SPARC32
179 range 2 4096 if SPARC64
180 default 32 if SPARC32
181 default 4096 if SPARC64
182
183source "kernel/Kconfig.hz"
184
185config GENERIC_HWEIGHT
186 bool
187 default y
188
189config GENERIC_CALIBRATE_DELAY
190 bool
191 default y
192
193config ARCH_MAY_HAVE_PC_FDC
194 bool
195 default y
196
197config EMULATED_CMPXCHG
198 bool
199 default y if SPARC32
200 help
201 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
202 is emulated, and therefore it is not completely atomic.
203
204# Makefile helpers
205config SPARC32_SMP
206 bool
207 default y
208 depends on SPARC32 && SMP
209
210config SPARC64_SMP
211 bool
212 default y
213 depends on SPARC64 && SMP
214
215config EARLYFB
216 bool "Support for early boot text console"
217 default y
218 depends on SPARC64
219 select FONT_SUN8x16
220 select FONT_SUPPORT
221 help
222 Say Y here to enable a faster early framebuffer boot console.
223
224config HOTPLUG_CPU
225 bool "Support for hot-pluggable CPUs"
226 depends on SPARC64 && SMP
227 help
228 Say Y here to experiment with turning CPUs off and on. CPUs
229 can be controlled through /sys/devices/system/cpu/cpu#.
230 Say N if you want to disable CPU hotplug.
231
232if SPARC64
233source "drivers/cpufreq/Kconfig"
234endif
235
236config US3_MC
237 tristate "UltraSPARC-III Memory Controller driver"
238 depends on SPARC64
239 default y
240 help
241 This adds a driver for the UltraSPARC-III memory controller.
242 Loading this driver allows exact mnemonic strings to be
243 printed in the event of a memory error, so that the faulty DIMM
244 on the motherboard can be matched to the error.
245
246 If in doubt, say Y, as this information can be very useful.
247
248# Global things across all Sun machines.
249config GENERIC_LOCKBREAK
250 bool
251 default y
252 depends on SPARC64 && SMP && PREEMPTION
253
254config NUMA
255 bool "NUMA support"
256 depends on SPARC64 && SMP
257
258config NODES_SHIFT
259 int "Maximum NUMA Nodes (as a power of 2)"
260 range 4 5 if SPARC64
261 default "5"
262 depends on NUMA
263 help
264 Specify the maximum number of NUMA Nodes available on the target
265 system. Increases memory reserved to accommodate various tables.
266
267config ARCH_SPARSEMEM_ENABLE
268 def_bool y if SPARC64
269 select SPARSEMEM_VMEMMAP_ENABLE
270
271config ARCH_SPARSEMEM_DEFAULT
272 def_bool y if SPARC64
273
274config ARCH_FORCE_MAX_ORDER
275 int "Order of maximal physically contiguous allocations"
276 default "12"
277 help
278 The kernel page allocator limits the size of maximal physically
279 contiguous allocations. The limit is called MAX_PAGE_ORDER and it
280 defines the maximal power of two of number of pages that can be
281 allocated as a single contiguous block. This option allows
282 overriding the default setting when ability to allocate very
283 large blocks of physically contiguous memory is required.
284
285 Don't change if unsure.
286
287if SPARC64 || COMPILE_TEST
288source "kernel/power/Kconfig"
289endif
290
291config SCHED_SMT
292 bool "SMT (Hyperthreading) scheduler support"
293 depends on SPARC64 && SMP
294 default y
295 help
296 SMT scheduler support improves the CPU scheduler's decision making
297 when dealing with SPARC cpus at a cost of slightly increased overhead
298 in some places. If unsure say N here.
299
300config SCHED_MC
301 bool "Multi-core scheduler support"
302 depends on SPARC64 && SMP
303 default y
304 help
305 Multi-core scheduler support improves the CPU scheduler's decision
306 making when dealing with multi-core CPU chips at a cost of slightly
307 increased overhead in some places. If unsure say N here.
308
309config CMDLINE_BOOL
310 bool "Default bootloader kernel arguments"
311 depends on SPARC64
312
313config CMDLINE
314 string "Initial kernel command string"
315 depends on CMDLINE_BOOL
316 default "console=ttyS0,9600 root=/dev/sda1"
317 help
318 Say Y here if you want to be able to pass default arguments to
319 the kernel. This will be overridden by the bootloader, if you
320 use one (such as SILO). This is most useful if you want to boot
321 a kernel from TFTP, and want default options to be available
322 with having them passed on the command line.
323
324 NOTE: This option WILL override the PROM bootargs setting!
325
326config SUN_PM
327 bool
328 default y if SPARC32
329 help
330 Enable power management and CPU standby features on supported
331 SPARC platforms.
332
333config SPARC_LED
334 tristate "Sun4m LED driver"
335 depends on SPARC32
336 help
337 This driver toggles the front-panel LED on sun4m systems
338 in a user-specifiable manner. Its state can be probed
339 by reading /proc/led and its blinking mode can be changed
340 via writes to /proc/led
341
342config SERIAL_CONSOLE
343 bool
344 depends on SPARC32
345 default y
346 help
347 If you say Y here, it will be possible to use a serial port as the
348 system console (the system console is the device which receives all
349 kernel messages and warnings and which allows logins in single user
350 mode). This could be useful if some terminal or printer is connected
351 to that serial port.
352
353 Even if you say Y here, the currently visible virtual console
354 (/dev/tty0) will still be used as the system console by default, but
355 you can alter that using a kernel command line option such as
356 "console=ttyS1". (Try "man bootparam" or see the documentation of
357 your boot loader (silo) about how to pass options to the kernel at
358 boot time.)
359
360 If you don't have a graphics card installed and you say Y here, the
361 kernel will automatically use the first serial line, /dev/ttyS0, as
362 system console.
363
364 If unsure, say N.
365
366config SPARC_LEON
367 bool "Sparc Leon processor family"
368 depends on SPARC32
369 select USB_EHCI_BIG_ENDIAN_MMIO
370 select USB_EHCI_BIG_ENDIAN_DESC
371 select USB_UHCI_BIG_ENDIAN_MMIO
372 select USB_UHCI_BIG_ENDIAN_DESC
373 help
374 If you say Y here if you are running on a SPARC-LEON processor.
375 The LEON processor is a synthesizable VHDL model of the
376 SPARC-v8 standard. LEON is part of the GRLIB collection of
377 IP cores that are distributed under GPL. GRLIB can be downloaded
378 from www.gaisler.com. You can download a sparc-linux cross-compilation
379 toolchain at www.gaisler.com.
380
381if SPARC_LEON
382menu "U-Boot options"
383
384config UBOOT_LOAD_ADDR
385 hex "uImage Load Address"
386 default 0x40004000
387 help
388 U-Boot kernel load address, the address in physical address space
389 where u-boot will place the Linux kernel before booting it.
390 This address is normally the base address of main memory + 0x4000.
391
392config UBOOT_FLASH_ADDR
393 hex "uImage.o Load Address"
394 default 0x00080000
395 help
396 Optional setting only affecting the uImage.o ELF-image used to
397 download the uImage file to the target using a ELF-loader other than
398 U-Boot. It may for example be used to download an uImage to FLASH with
399 the GRMON utility before even starting u-boot.
400
401config UBOOT_ENTRY_ADDR
402 hex "uImage Entry Address"
403 default 0xf0004000
404 help
405 Do not change this unless you know what you're doing. This is
406 hardcoded by the SPARC32 and LEON port.
407
408 This is the virtual address u-boot jumps to when booting the Linux
409 Kernel.
410
411endmenu
412endif
413
414endmenu
415
416menu "Bus options (PCI etc.)"
417config SBUS
418 bool
419 default y
420
421config SBUSCHAR
422 bool
423 default y
424
425config SUN_LDOMS
426 bool "Sun Logical Domains support"
427 depends on SPARC64
428 help
429 Say Y here is you want to support virtual devices via
430 Logical Domains.
431
432config PCIC_PCI
433 bool
434 depends on PCI && SPARC32 && !SPARC_LEON
435 default y
436
437config LEON_PCI
438 bool
439 depends on PCI && SPARC_LEON
440 default y
441
442config SPARC_GRPCI1
443 bool "GRPCI Host Bridge Support"
444 depends on LEON_PCI
445 default y
446 help
447 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
448 PCI host controller is typically found in GRLIB SPARC32/LEON
449 systems. The driver has one property (all_pci_errors) controlled
450 from the bootloader that makes the GRPCI to generate interrupts
451 on detected PCI Parity and System errors.
452
453config SPARC_GRPCI2
454 bool "GRPCI2 Host Bridge Support"
455 depends on LEON_PCI
456 default y
457 help
458 Say Y here to include the GRPCI2 Host Bridge Driver.
459
460config SUN_OPENPROMFS
461 tristate "Openprom tree appears in /proc/openprom"
462 help
463 If you say Y, the OpenPROM device tree will be available as a
464 virtual file system, which you can mount to /proc/openprom by "mount
465 -t openpromfs none /proc/openprom".
466
467 To compile the /proc/openprom support as a module, choose M here: the
468 module will be called openpromfs.
469
470 Only choose N if you know in advance that you will not need to modify
471 OpenPROM settings on the running system.
472
473# Makefile helpers
474config SPARC64_PCI
475 bool
476 default y
477 depends on SPARC64 && PCI
478
479config SPARC64_PCI_MSI
480 bool
481 default y
482 depends on SPARC64_PCI && PCI_MSI
483
484endmenu
485
486config COMPAT
487 bool
488 depends on SPARC64
489 default y
490 select HAVE_UID16
491 select ARCH_WANT_OLD_COMPAT_IPC
492 select COMPAT_OLD_SIGACTION
493
494source "drivers/sbus/char/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 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"