1 # SPDX-License-Identifier: GPL-2.0 !! 1 # For a description of the syntax of this configuration file,
2 config ARM !! 2 # see Documentation/kbuild/kconfig-language.txt.
>> 3 #
>> 4
>> 5 mainmenu "Linux/SPARC Kernel Configuration"
>> 6
>> 7 config 64BIT
>> 8 bool "64-bit kernel" if ARCH = "sparc"
>> 9 default ARCH = "sparc64"
>> 10 help
>> 11 SPARC is a family of RISC microprocessors designed and marketed by
>> 12 Sun Microsystems, incorporated. They are very widely found in Sun
>> 13 workstations and clones.
>> 14
>> 15 Say yes to build a 64-bit kernel - formerly known as sparc64
>> 16 Say no to build a 32-bit kernel - formerly known as sparc
>> 17
>> 18 config SPARC
3 bool 19 bool
4 default y 20 default y
5 select ARCH_32BIT_OFF_T !! 21 select HAVE_IDE
6 select ARCH_CORRECT_STACKTRACE_ON_KRET !! 22 select HAVE_OPROFILE
7 select ARCH_HAS_BINFMT_FLAT !! 23 select HAVE_ARCH_KGDB if !SMP || SPARC64
8 select ARCH_HAS_CPU_CACHE_ALIASING <<
9 select ARCH_HAS_CPU_FINALIZE_INIT if M <<
10 select ARCH_HAS_CURRENT_STACK_POINTER <<
11 select ARCH_HAS_DEBUG_VIRTUAL if MMU <<
12 select ARCH_HAS_DMA_ALLOC if MMU <<
13 select ARCH_HAS_DMA_OPS <<
14 select ARCH_HAS_DMA_WRITE_COMBINE if ! <<
15 select ARCH_HAS_ELF_RANDOMIZE <<
16 select ARCH_HAS_FORTIFY_SOURCE <<
17 select ARCH_HAS_KEEPINITRD <<
18 select ARCH_HAS_KCOV <<
19 select ARCH_HAS_MEMBARRIER_SYNC_CORE <<
20 select ARCH_HAS_NON_OVERLAPPING_ADDRES <<
21 select ARCH_HAS_PTE_SPECIAL if ARM_LPA <<
22 select ARCH_HAS_SETUP_DMA_OPS <<
23 select ARCH_HAS_SET_MEMORY <<
24 select ARCH_STACKWALK <<
25 select ARCH_HAS_STRICT_KERNEL_RWX if M <<
26 select ARCH_HAS_STRICT_MODULE_RWX if M <<
27 select ARCH_HAS_SYNC_DMA_FOR_DEVICE <<
28 select ARCH_HAS_SYNC_DMA_FOR_CPU <<
29 select ARCH_HAS_TEARDOWN_DMA_OPS if MM <<
30 select ARCH_HAS_TICK_BROADCAST if GENE <<
31 select ARCH_HAVE_NMI_SAFE_CMPXCHG if C <<
32 select ARCH_HAS_GCOV_PROFILE_ALL <<
33 select ARCH_KEEP_MEMBLOCK <<
34 select ARCH_HAS_UBSAN <<
35 select ARCH_MIGHT_HAVE_PC_PARPORT <<
36 select ARCH_OPTIONAL_KERNEL_RWX if ARC <<
37 select ARCH_OPTIONAL_KERNEL_RWX_DEFAUL <<
38 select ARCH_NEED_CMPXCHG_1_EMU if CPU_ <<
39 select ARCH_SUPPORTS_ATOMIC_RMW <<
40 select ARCH_SUPPORTS_CFI_CLANG <<
41 select ARCH_SUPPORTS_HUGETLBFS if ARM_ <<
42 select ARCH_SUPPORTS_PER_VMA_LOCK <<
43 select ARCH_USE_BUILTIN_BSWAP <<
44 select ARCH_USE_CMPXCHG_LOCKREF <<
45 select ARCH_USE_MEMTEST <<
46 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_ <<
47 select ARCH_WANT_GENERAL_HUGETLB <<
48 select ARCH_WANT_IPC_PARSE_VERSION <<
49 select ARCH_WANT_LD_ORPHAN_WARN <<
50 select BINFMT_FLAT_ARGVP_ENVP_ON_STACK <<
51 select BUILDTIME_TABLE_SORT if MMU <<
52 select COMMON_CLK if !(ARCH_RPC || ARC <<
53 select CLONE_BACKWARDS <<
54 select CPU_PM if SUSPEND || CPU_IDLE <<
55 select DCACHE_WORD_ACCESS if HAVE_EFFI <<
56 select DMA_DECLARE_COHERENT <<
57 select DMA_GLOBAL_POOL if !MMU <<
58 select DMA_NONCOHERENT_MMAP if MMU <<
59 select EDAC_SUPPORT <<
60 select EDAC_ATOMIC_SCRUB <<
61 select GENERIC_ALLOCATOR <<
62 select GENERIC_ARCH_TOPOLOGY if ARM_CP <<
63 select GENERIC_ATOMIC64 if CPU_V7M || <<
64 select GENERIC_CLOCKEVENTS_BROADCAST i <<
65 select GENERIC_IRQ_IPI if SMP <<
66 select GENERIC_CPU_AUTOPROBE <<
67 select GENERIC_CPU_DEVICES <<
68 select GENERIC_EARLY_IOREMAP <<
69 select GENERIC_IDLE_POLL_SETUP <<
70 select GENERIC_IRQ_MULTI_HANDLER <<
71 select GENERIC_IRQ_PROBE <<
72 select GENERIC_IRQ_SHOW <<
73 select GENERIC_IRQ_SHOW_LEVEL <<
74 select GENERIC_LIB_DEVMEM_IS_ALLOWED <<
75 select GENERIC_PCI_IOMAP <<
76 select GENERIC_SCHED_CLOCK <<
77 select GENERIC_SMP_IDLE_THREAD <<
78 select HARDIRQS_SW_RESEND <<
79 select HAS_IOPORT <<
80 select HAVE_ARCH_AUDITSYSCALL if AEABI <<
81 select HAVE_ARCH_BITREVERSE if (CPU_32 <<
82 select HAVE_ARCH_JUMP_LABEL if !XIP_KE <<
83 select HAVE_ARCH_KFENCE if MMU && !XIP <<
84 select HAVE_ARCH_KGDB if !CPU_ENDIAN_B <<
85 select HAVE_ARCH_KASAN if MMU && !XIP_ <<
86 select HAVE_ARCH_KASAN_VMALLOC if HAVE <<
87 select HAVE_ARCH_MMAP_RND_BITS if MMU <<
88 select HAVE_ARCH_PFN_VALID <<
89 select HAVE_ARCH_SECCOMP <<
90 select HAVE_ARCH_SECCOMP_FILTER if AEA <<
91 select HAVE_ARCH_STACKLEAK <<
92 select HAVE_ARCH_THREAD_STRUCT_WHITELI <<
93 select HAVE_ARCH_TRACEHOOK 24 select HAVE_ARCH_TRACEHOOK
94 select HAVE_ARCH_TRANSPARENT_HUGEPAGE !! 25 select ARCH_WANT_OPTIONAL_GPIOLIB
95 select HAVE_ARM_SMCCC if CPU_V7 !! 26 select RTC_CLASS
96 select HAVE_EBPF_JIT if !CPU_ENDIAN_BE !! 27 select RTC_DRV_M48T59
97 select HAVE_CONTEXT_TRACKING_USER <<
98 select HAVE_C_RECORDMCOUNT <<
99 select HAVE_BUILDTIME_MCOUNT_SORT <<
100 select HAVE_DEBUG_KMEMLEAK if !XIP_KER <<
101 select HAVE_DMA_CONTIGUOUS if MMU <<
102 select HAVE_DYNAMIC_FTRACE if !XIP_KER <<
103 select HAVE_DYNAMIC_FTRACE_WITH_REGS i <<
104 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
105 select HAVE_EXIT_THREAD <<
106 select HAVE_GUP_FAST if ARM_LPAE <<
107 select HAVE_FTRACE_MCOUNT_RECORD if !X <<
108 select HAVE_FUNCTION_ERROR_INJECTION <<
109 select HAVE_FUNCTION_GRAPH_TRACER <<
110 select HAVE_FUNCTION_TRACER if !XIP_KE <<
111 select HAVE_GCC_PLUGINS <<
112 select HAVE_HW_BREAKPOINT if PERF_EVEN <<
113 select HAVE_IRQ_TIME_ACCOUNTING <<
114 select HAVE_KERNEL_GZIP <<
115 select HAVE_KERNEL_LZ4 <<
116 select HAVE_KERNEL_LZMA <<
117 select HAVE_KERNEL_LZO <<
118 select HAVE_KERNEL_XZ <<
119 select HAVE_KPROBES if !XIP_KERNEL && <<
120 select HAVE_KRETPROBES if HAVE_KPROBES <<
121 select HAVE_LD_DEAD_CODE_DATA_ELIMINAT <<
122 select HAVE_MOD_ARCH_SPECIFIC <<
123 select HAVE_NMI <<
124 select HAVE_OPTPROBES if !THUMB2_KERNE <<
125 select HAVE_PAGE_SIZE_4KB <<
126 select HAVE_PCI if MMU <<
127 select HAVE_PERF_EVENTS 28 select HAVE_PERF_EVENTS
128 select HAVE_PERF_REGS <<
129 select HAVE_PERF_USER_STACK_DUMP <<
130 select MMU_GATHER_RCU_TABLE_FREE if SM <<
131 select HAVE_REGS_AND_STACK_ACCESS_API <<
132 select HAVE_RSEQ <<
133 select HAVE_STACKPROTECTOR <<
134 select HAVE_SYSCALL_TRACEPOINTS <<
135 select HAVE_UID16 <<
136 select HAVE_VIRT_CPU_ACCOUNTING_GEN <<
137 select HOTPLUG_CORE_SYNC_DEAD if HOTPL <<
138 select IRQ_FORCED_THREADING <<
139 select LOCK_MM_AND_FIND_VMA <<
140 select MODULES_USE_ELF_REL <<
141 select NEED_DMA_MAP_STATE <<
142 select OF_EARLY_FLATTREE if OF <<
143 select OLD_SIGACTION <<
144 select OLD_SIGSUSPEND3 <<
145 select PCI_DOMAINS_GENERIC if PCI <<
146 select PCI_SYSCALL if PCI <<
147 select PERF_USE_VMALLOC 29 select PERF_USE_VMALLOC
148 select RTC_LIB !! 30 select HAVE_DMA_ATTRS
149 select SPARSE_IRQ if !(ARCH_FOOTBRIDGE !! 31 select HAVE_DMA_API_DEBUG
150 select SYS_SUPPORTS_APM_EMULATION <<
151 select THREAD_INFO_IN_TASK <<
152 select TIMER_OF if OF <<
153 select HAVE_ARCH_VMAP_STACK if MMU && <<
154 select TRACE_IRQFLAGS_SUPPORT if !CPU_ <<
155 select USE_OF if !(ARCH_FOOTBRIDGE || <<
156 # Above selects are sorted alphabetica <<
157 # according to that. Thanks. <<
158 help <<
159 The ARM series is a line of low-powe <<
160 licensed by ARM Ltd and targeted at <<
161 handhelds such as the Compaq IPAQ. <<
162 manufactured, but legacy ARM-based P <<
163 Europe. There is an ARM Linux proje <<
164 <http://www.arm.linux.org.uk/>. <<
165 32
166 config ARM_HAS_GROUP_RELOCS !! 33 config SPARC32
167 def_bool y !! 34 def_bool !64BIT
168 depends on !LD_IS_LLD || LLD_VERSION > <<
169 depends on !COMPILE_TEST <<
170 help <<
171 Whether or not to use R_ARM_ALU_PC_G <<
172 relocations, which have been around <<
173 supported in LLD until version 14. T <<
174 which is usually sufficient, but not <<
175 this feature when doing compile test <<
176 <<
177 config ARM_DMA_USE_IOMMU <<
178 bool <<
179 select NEED_SG_DMA_LENGTH <<
180 <<
181 if ARM_DMA_USE_IOMMU <<
182 <<
183 config ARM_DMA_IOMMU_ALIGNMENT <<
184 int "Maximum PAGE_SIZE order of alignm <<
185 range 4 9 <<
186 default 8 <<
187 help <<
188 DMA mapping framework by default ali <<
189 PAGE_SIZE order which is greater tha <<
190 size. This works well for buffers up <<
191 for larger buffers it just a waste o <<
192 relatively small addressing window ( <<
193 virtual space with just a few alloca <<
194 <<
195 With this parameter you can specify <<
196 DMA IOMMU buffers. Larger buffers wi <<
197 specified order. The order is expres <<
198 by the PAGE_SIZE. <<
199 35
200 endif !! 36 config SPARC64
201 !! 37 def_bool 64BIT
202 config SYS_SUPPORTS_APM_EMULATION !! 38 select ARCH_SUPPORTS_MSI
203 bool !! 39 select HAVE_FUNCTION_TRACER
>> 40 select HAVE_KRETPROBES
>> 41 select HAVE_KPROBES
>> 42 select HAVE_LMB
>> 43 select HAVE_SYSCALL_WRAPPERS
>> 44 select HAVE_DYNAMIC_FTRACE
>> 45 select HAVE_FTRACE_MCOUNT_RECORD
>> 46 select USE_GENERIC_SMP_HELPERS if SMP
>> 47 select RTC_DRV_CMOS
>> 48 select RTC_DRV_BQ4802
>> 49 select RTC_DRV_SUN4V
>> 50 select RTC_DRV_STARFIRE
>> 51 select HAVE_PERF_EVENTS
>> 52 select PERF_USE_VMALLOC
204 53
205 config HAVE_TCM !! 54 config ARCH_DEFCONFIG
206 bool !! 55 string
207 select GENERIC_ALLOCATOR !! 56 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
>> 57 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
208 58
209 config HAVE_PROC_CPU !! 59 # CONFIG_BITS can be used at source level to get 32/64 bits
210 bool !! 60 config BITS
>> 61 int
>> 62 default 32 if SPARC32
>> 63 default 64 if SPARC64
211 64
212 config NO_IOPORT_MAP !! 65 config GENERIC_TIME
213 bool 66 bool
>> 67 default y if SPARC64
214 68
215 config SBUS !! 69 config GENERIC_CMOS_UPDATE
216 bool 70 bool
>> 71 default y if SPARC64
217 72
218 config STACKTRACE_SUPPORT !! 73 config GENERIC_CLOCKEVENTS
219 bool 74 bool
220 default y !! 75 default y if SPARC64
221 76
222 config LOCKDEP_SUPPORT !! 77 config IOMMU_HELPER
223 bool 78 bool
224 default y !! 79 default y if SPARC64
225 80
226 config ARCH_HAS_ILOG2_U32 !! 81 config QUICKLIST
227 bool 82 bool
>> 83 default y if SPARC64
228 84
229 config ARCH_HAS_ILOG2_U64 !! 85 config STACKTRACE_SUPPORT
230 bool 86 bool
>> 87 default y if SPARC64
231 88
232 config ARCH_HAS_BANDGAP !! 89 config LOCKDEP_SUPPORT
233 bool 90 bool
>> 91 default y if SPARC64
234 92
235 config FIX_EARLYCON_MEM !! 93 config HAVE_LATENCYTOP_SUPPORT
236 def_bool y if MMU <<
237 <<
238 config GENERIC_HWEIGHT <<
239 bool 94 bool
240 default y !! 95 default y if SPARC64
241 96
242 config GENERIC_CALIBRATE_DELAY !! 97 config AUDIT_ARCH
243 bool 98 bool
244 default y 99 default y
245 100
246 config ARCH_MAY_HAVE_PC_FDC !! 101 config HAVE_SETUP_PER_CPU_AREA
247 bool !! 102 def_bool y if SPARC64
248 103
249 config ARCH_SUPPORTS_UPROBES !! 104 config NEED_PER_CPU_EMBED_FIRST_CHUNK
250 def_bool y !! 105 def_bool y if SPARC64
251 <<
252 config GENERIC_ISA_DMA <<
253 bool <<
254 <<
255 config FIQ <<
256 bool <<
257 <<
258 config ARCH_MTD_XIP <<
259 bool <<
260 <<
261 config ARM_PATCH_PHYS_VIRT <<
262 bool "Patch physical to virtual transl <<
263 default y <<
264 depends on MMU <<
265 help <<
266 Patch phys-to-virt and virt-to-phys <<
267 boot and module load time according <<
268 kernel in system memory. <<
269 <<
270 This can only be used with non-XIP M <<
271 of physical memory is at a 2 MiB bou <<
272 <<
273 Only disable this option if you know <<
274 this feature (eg, building a kernel <<
275 you need to shrink the kernel to the <<
276 106
277 config NEED_MACH_IO_H !! 107 config NEED_PER_CPU_PAGE_FIRST_CHUNK
278 bool !! 108 def_bool y if SPARC64
279 help <<
280 Select this when mach/io.h is requir <<
281 definitions for this platform. The <<
282 be avoided when possible. <<
283 109
284 config NEED_MACH_MEMORY_H !! 110 config GENERIC_HARDIRQS_NO__DO_IRQ
285 bool 111 bool
286 help !! 112 def_bool y if SPARC64
287 Select this when mach/memory.h is re <<
288 definitions for this platform. The <<
289 be avoided when possible. <<
290 <<
291 config PHYS_OFFSET <<
292 hex "Physical address of main memory" <<
293 depends on !ARM_PATCH_PHYS_VIRT || !AU <<
294 default DRAM_BASE if !MMU <<
295 default 0x00000000 if ARCH_FOOTBRIDGE <<
296 default 0x10000000 if ARCH_OMAP1 || AR <<
297 default 0xa0000000 if ARCH_PXA <<
298 default 0xc0000000 if ARCH_EP93XX || A <<
299 default 0 <<
300 help <<
301 Please provide the physical address <<
302 location of main memory in your syst <<
303 <<
304 config GENERIC_BUG <<
305 def_bool y <<
306 depends on BUG <<
307 <<
308 config PGTABLE_LEVELS <<
309 int <<
310 default 3 if ARM_LPAE <<
311 default 2 <<
312 <<
313 menu "System Type" <<
314 113
315 config MMU 114 config MMU
316 bool "MMU-based Paged Memory Managemen !! 115 bool
317 default y <<
318 help <<
319 Select if you want MMU-based virtual <<
320 support by paged memory management. <<
321 <<
322 config ARM_SINGLE_ARMV7M <<
323 def_bool !MMU <<
324 select ARM_NVIC <<
325 select CPU_V7M <<
326 select NO_IOPORT_MAP <<
327 <<
328 config ARCH_MMAP_RND_BITS_MIN <<
329 default 8 <<
330 <<
331 config ARCH_MMAP_RND_BITS_MAX <<
332 default 14 if PAGE_OFFSET=0x40000000 <<
333 default 15 if PAGE_OFFSET=0x80000000 <<
334 default 16 <<
335 <<
336 config ARCH_MULTIPLATFORM <<
337 bool "Require kernel to be portable to <<
338 depends on MMU && !(ARCH_FOOTBRIDGE || <<
339 default y 116 default y
340 help <<
341 In general, all Arm machines can be <<
342 kernel image, covering either Armv4/ <<
343 <<
344 However, some configuration options <<
345 specific physical addresses or enabl <<
346 break other machines. <<
347 <<
348 Selecting N here allows using those <<
349 DEBUG_UNCOMPRESS, XIP_KERNEL and ZBO <<
350 <<
351 source "arch/arm/Kconfig.platforms" <<
352 <<
353 # <<
354 # This is sorted alphabetically by mach-* path <<
355 # Kconfigs may be included either alphabetical <<
356 # plat- suffix) or along side the correspondin <<
357 # <<
358 source "arch/arm/mach-actions/Kconfig" <<
359 <<
360 source "arch/arm/mach-alpine/Kconfig" <<
361 <<
362 source "arch/arm/mach-artpec/Kconfig" <<
363 <<
364 source "arch/arm/mach-aspeed/Kconfig" <<
365 <<
366 source "arch/arm/mach-at91/Kconfig" <<
367 <<
368 source "arch/arm/mach-axxia/Kconfig" <<
369 <<
370 source "arch/arm/mach-bcm/Kconfig" <<
371 <<
372 source "arch/arm/mach-berlin/Kconfig" <<
373 <<
374 source "arch/arm/mach-clps711x/Kconfig" <<
375 <<
376 source "arch/arm/mach-davinci/Kconfig" <<
377 <<
378 source "arch/arm/mach-digicolor/Kconfig" <<
379 <<
380 source "arch/arm/mach-dove/Kconfig" <<
381 <<
382 source "arch/arm/mach-ep93xx/Kconfig" <<
383 <<
384 source "arch/arm/mach-exynos/Kconfig" <<
385 <<
386 source "arch/arm/mach-footbridge/Kconfig" <<
387 <<
388 source "arch/arm/mach-gemini/Kconfig" <<
389 <<
390 source "arch/arm/mach-highbank/Kconfig" <<
391 <<
392 source "arch/arm/mach-hisi/Kconfig" <<
393 <<
394 source "arch/arm/mach-hpe/Kconfig" <<
395 <<
396 source "arch/arm/mach-imx/Kconfig" <<
397 <<
398 source "arch/arm/mach-ixp4xx/Kconfig" <<
399 <<
400 source "arch/arm/mach-keystone/Kconfig" <<
401 <<
402 source "arch/arm/mach-lpc32xx/Kconfig" <<
403 117
404 source "arch/arm/mach-mediatek/Kconfig" !! 118 config HIGHMEM
405 <<
406 source "arch/arm/mach-meson/Kconfig" <<
407 <<
408 source "arch/arm/mach-milbeaut/Kconfig" <<
409 <<
410 source "arch/arm/mach-mmp/Kconfig" <<
411 <<
412 source "arch/arm/mach-mstar/Kconfig" <<
413 <<
414 source "arch/arm/mach-mv78xx0/Kconfig" <<
415 <<
416 source "arch/arm/mach-mvebu/Kconfig" <<
417 <<
418 source "arch/arm/mach-mxs/Kconfig" <<
419 <<
420 source "arch/arm/mach-nomadik/Kconfig" <<
421 <<
422 source "arch/arm/mach-npcm/Kconfig" <<
423 <<
424 source "arch/arm/mach-omap1/Kconfig" <<
425 <<
426 source "arch/arm/mach-omap2/Kconfig" <<
427 <<
428 source "arch/arm/mach-orion5x/Kconfig" <<
429 <<
430 source "arch/arm/mach-pxa/Kconfig" <<
431 <<
432 source "arch/arm/mach-qcom/Kconfig" <<
433 <<
434 source "arch/arm/mach-realtek/Kconfig" <<
435 <<
436 source "arch/arm/mach-rpc/Kconfig" <<
437 <<
438 source "arch/arm/mach-rockchip/Kconfig" <<
439 <<
440 source "arch/arm/mach-s3c/Kconfig" <<
441 <<
442 source "arch/arm/mach-s5pv210/Kconfig" <<
443 <<
444 source "arch/arm/mach-sa1100/Kconfig" <<
445 <<
446 source "arch/arm/mach-shmobile/Kconfig" <<
447 <<
448 source "arch/arm/mach-socfpga/Kconfig" <<
449 <<
450 source "arch/arm/mach-spear/Kconfig" <<
451 <<
452 source "arch/arm/mach-sti/Kconfig" <<
453 <<
454 source "arch/arm/mach-stm32/Kconfig" <<
455 <<
456 source "arch/arm/mach-sunxi/Kconfig" <<
457 <<
458 source "arch/arm/mach-tegra/Kconfig" <<
459 <<
460 source "arch/arm/mach-ux500/Kconfig" <<
461 <<
462 source "arch/arm/mach-versatile/Kconfig" <<
463 <<
464 source "arch/arm/mach-vt8500/Kconfig" <<
465 <<
466 source "arch/arm/mach-zynq/Kconfig" <<
467 <<
468 # ARMv7-M architecture <<
469 config ARCH_LPC18XX <<
470 bool "NXP LPC18xx/LPC43xx" <<
471 depends on ARM_SINGLE_ARMV7M <<
472 select ARCH_HAS_RESET_CONTROLLER <<
473 select ARM_AMBA <<
474 select CLKSRC_LPC32XX <<
475 select PINCTRL <<
476 help <<
477 Support for NXP's LPC18xx Cortex-M3 <<
478 high performance microcontrollers. <<
479 <<
480 config ARCH_MPS2 <<
481 bool "ARM MPS2 platform" <<
482 depends on ARM_SINGLE_ARMV7M <<
483 select ARM_AMBA <<
484 select CLKSRC_MPS2 <<
485 help <<
486 Support for Cortex-M Prototyping Sys <<
487 with a range of available cores like <<
488 <<
489 Please, note that depends which Appl <<
490 for the platform may vary, so adjust <<
491 <<
492 # Definitions to make life easier <<
493 config ARCH_ACORN <<
494 bool 119 bool
>> 120 default y if SPARC32
495 121
496 config PLAT_ORION !! 122 config ZONE_DMA
497 bool 123 bool
498 select CLKSRC_MMIO !! 124 default y if SPARC32
499 select GENERIC_IRQ_CHIP <<
500 select IRQ_DOMAIN <<
501 125
502 config PLAT_ORION_LEGACY !! 126 config GENERIC_ISA_DMA
503 bool 127 bool
504 select PLAT_ORION !! 128 default y if SPARC32
505 129
506 config PLAT_VERSATILE !! 130 config GENERIC_GPIO
507 bool 131 bool
508 <<
509 source "arch/arm/mm/Kconfig" <<
510 <<
511 config IWMMXT <<
512 bool "Enable iWMMXt support" <<
513 depends on CPU_XSCALE || CPU_XSC3 || C <<
514 default y if PXA27x || PXA3xx || ARCH_ <<
515 help <<
516 Enable support for iWMMXt context sw <<
517 running on a CPU that supports it. <<
518 <<
519 if !MMU <<
520 source "arch/arm/Kconfig-nommu" <<
521 endif <<
522 <<
523 config PJ4B_ERRATA_4742 <<
524 bool "PJ4B Errata 4742: IDLE Wake Up C <<
525 depends on CPU_PJ4B && MACH_ARMADA_370 <<
526 default y <<
527 help <<
528 When coming out of either a Wait for <<
529 Event (WFE) IDLE states, a specific <<
530 the retiring WFI/WFE instructions an <<
531 instructions. This sensitivity can <<
532 Workaround: <<
533 The software must insert either a Da <<
534 or Data Memory Barrier (DMB) command <<
535 instruction <<
536 <<
537 config ARM_ERRATA_326103 <<
538 bool "ARM errata: FSR write bit incorr <<
539 depends on CPU_V6 <<
540 help <<
541 Executing a SWP instruction to read- <<
542 of the FSR on the ARM 1136 prior to <<
543 treat the access as a read, preventi <<
544 causing the faulting task to liveloc <<
545 <<
546 config ARM_ERRATA_411920 <<
547 bool "ARM errata: Invalidation of the <<
548 depends on CPU_V6 || CPU_V6K <<
549 help <<
550 Invalidation of the Instruction Cach <<
551 fail. This erratum is present in 113 <<
552 It does not affect the MPCore. This <<
553 recommended workaround. <<
554 <<
555 config ARM_ERRATA_430973 <<
556 bool "ARM errata: Stale prediction on <<
557 depends on CPU_V7 <<
558 help <<
559 This option enables the workaround f <<
560 r1p* erratum. If a code sequence con <<
561 interworking branch is replaced with <<
562 same virtual address, whether due to <<
563 to physical address re-mapping, Cort <<
564 stale interworking branch prediction <<
565 executing the new code sequence in t <<
566 The workaround enables the BTB/BTAC <<
567 and also flushes the branch target c <<
568 Note that setting specific bits in t <<
569 available in non-secure mode. <<
570 <<
571 config ARM_ERRATA_458693 <<
572 bool "ARM errata: Processor deadlock w <<
573 depends on CPU_V7 <<
574 depends on !ARCH_MULTIPLATFORM <<
575 help <<
576 This option enables the workaround f <<
577 erratum. For very specific sequences <<
578 possible for a hazard condition inte <<
579 be incorrectly associated with a dif <<
580 hazard might then cause a processor <<
581 the L1 caching of the NEON accesses <<
582 in the ACTLR register. Note that set <<
583 register may not be available in non <<
584 available on a multiplatform kernel. <<
585 bootloader instead. <<
586 <<
587 config ARM_ERRATA_460075 <<
588 bool "ARM errata: Data written to the <<
589 depends on CPU_V7 <<
590 depends on !ARCH_MULTIPLATFORM <<
591 help <<
592 This option enables the workaround f <<
593 erratum. Any asynchronous access to <<
594 situation in which recent store tran <<
595 and overwritten with stale memory co <<
596 workaround disables the write-alloca <<
597 ACTLR register. Note that setting sp <<
598 may not be available in non-secure m <<
599 a multiplatform kernel. This should <<
600 instead. <<
601 <<
602 config ARM_ERRATA_742230 <<
603 bool "ARM errata: DMB operation may be <<
604 depends on CPU_V7 && SMP <<
605 depends on !ARCH_MULTIPLATFORM <<
606 help <<
607 This option enables the workaround f <<
608 (r1p0..r2p2) erratum. Under rare cir <<
609 between two write operations may not <<
610 ordering of the two writes. This wor <<
611 the diagnostic register of the Corte <<
612 instruction to behave as a DSB, ensu <<
613 the two writes. Note that setting sp <<
614 register may not be available in non <<
615 available on a multiplatform kernel. <<
616 bootloader instead. <<
617 <<
618 config ARM_ERRATA_742231 <<
619 bool "ARM errata: Incorrect hazard han <<
620 depends on CPU_V7 && SMP <<
621 depends on !ARCH_MULTIPLATFORM <<
622 help <<
623 This option enables the workaround f <<
624 (r2p0..r2p2) erratum. Under certain <<
625 Cortex-A9 MPCore micro-architecture, <<
626 accessing some data located in the s <<
627 data due to bad handling of the addr <<
628 replaced from one of the CPUs at the <<
629 accessing it. This workaround sets s <<
630 register of the Cortex-A9 which redu <<
631 capabilities of the processor. Note <<
632 diagnostics register may not be avai <<
633 is not available on a multiplatform <<
634 the bootloader instead. <<
635 <<
636 config ARM_ERRATA_643719 <<
637 bool "ARM errata: LoUIS bit field in C <<
638 depends on CPU_V7 && SMP <<
639 default y <<
640 help <<
641 This option enables the workaround f <<
642 r1p0) erratum. On affected cores the <<
643 register returns zero when it should <<
644 corrects this value, ensuring cache <<
645 it behave as intended and avoiding d <<
646 <<
647 config ARM_ERRATA_720789 <<
648 bool "ARM errata: TLBIASIDIS and TLBIM <<
649 depends on CPU_V7 <<
650 help <<
651 This option enables the workaround f <<
652 r2p0) erratum. A faulty ASID can be <<
653 broadcasted CP15 TLB maintenance ope <<
654 As a consequence of this erratum, so <<
655 invalidated are not, resulting in an <<
656 tables. The workaround changes the T <<
657 entries regardless of the ASID. <<
658 <<
659 config ARM_ERRATA_743622 <<
660 bool "ARM errata: Faulty hazard checki <<
661 depends on CPU_V7 <<
662 depends on !ARCH_MULTIPLATFORM <<
663 help <<
664 This option enables the workaround f <<
665 (r2p*) erratum. Under very rare cond <<
666 optimisation in the Cortex-A9 Store <<
667 corruption. This workaround sets a s <<
668 register of the Cortex-A9 which disa <<
669 optimisation, preventing the defect <<
670 visible impact on the overall perfor <<
671 processor. Note that setting specifi <<
672 may not be available in non-secure m <<
673 multiplatform kernel. This should be <<
674 <<
675 config ARM_ERRATA_751472 <<
676 bool "ARM errata: Interrupted ICIALLUI <<
677 depends on CPU_V7 <<
678 depends on !ARCH_MULTIPLATFORM <<
679 help <<
680 This option enables the workaround f <<
681 to r3p0) erratum. An interrupted ICI <<
682 completion of a following broadcaste <<
683 operation is received by a CPU befor <<
684 potentially leading to corrupted ent <<
685 Note that setting specific bits in t <<
686 not be available in non-secure mode <<
687 a multiplatform kernel. This should <<
688 instead. <<
689 <<
690 config ARM_ERRATA_754322 <<
691 bool "ARM errata: possible faulty MMU <<
692 depends on CPU_V7 <<
693 help <<
694 This option enables the workaround f <<
695 r3p*) erratum. A speculative memory <<
696 which starts prior to an ASID switch <<
697 can populate the micro-TLB with a st <<
698 the new ASID. This workaround places <<
699 switching code so that no page table <<
700 <<
701 config ARM_ERRATA_754327 <<
702 bool "ARM errata: no automatic Store B <<
703 depends on CPU_V7 && SMP <<
704 help <<
705 This option enables the workaround f <<
706 r2p0) erratum. The Store Buffer does <<
707 mechanism and therefore a livelock m <<
708 continuously polls a memory location <<
709 This workaround defines cpu_relax() <<
710 written polling loops from denying v <<
711 <<
712 config ARM_ERRATA_364296 <<
713 bool "ARM errata: Possible cache data <<
714 depends on CPU_V6 <<
715 help <<
716 This options enables the workaround <<
717 r0p2 erratum (possible cache data co <<
718 hit-under-miss enabled). It sets the <<
719 the auxiliary control register and t <<
720 register, thus disabling hit-under-m <<
721 processor into full low interrupt la <<
722 is not affected. <<
723 <<
724 config ARM_ERRATA_764369 <<
725 bool "ARM errata: Data cache line main <<
726 depends on CPU_V7 && SMP <<
727 help <<
728 This option enables the workaround f <<
729 affecting Cortex-A9 MPCore with two <<
730 current revisions). Under certain ti <<
731 cache line maintenance operation by <<
732 Shareable memory region may fail to <<
733 Point of Coherency or to the Point o <<
734 system. This workaround adds a DSB i <<
735 relevant cache maintenance functions <<
736 in the diagnostic control register o <<
737 <<
738 config ARM_ERRATA_764319 <<
739 bool "ARM errata: Read to DBGPRSR and <<
740 depends on CPU_V7 <<
741 help 132 help
742 This option enables the workaround f !! 133 Generic GPIO API support
743 CP14 read accesses to the DBGPRSR an <<
744 unexpected Undefined Instruction exc <<
745 external pin is set to 0, even when <<
746 from a privileged mode. This work ar <<
747 way the kernel does not stop executi <<
748 <<
749 config ARM_ERRATA_775420 <<
750 bool "ARM errata: A data cache maintena <<
751 depends on CPU_V7 <<
752 help <<
753 This option enables the workaround fo <<
754 r2p6,r2p8,r2p10,r3p0) erratum. In cas <<
755 operation aborts with MMU exception, <<
756 to deadlock. This workaround puts DSB <<
757 an abort may occur on cache maintenan <<
758 <<
759 config ARM_ERRATA_798181 <<
760 bool "ARM errata: TLBI/DSB failure on <<
761 depends on CPU_V7 && SMP <<
762 help <<
763 On Cortex-A15 (r0p0..r3p2) the TLBI* <<
764 adequately shooting down all use of <<
765 option enables the Linux kernel work <<
766 which sends an IPI to the CPUs that <<
767 as the one being invalidated. <<
768 <<
769 config ARM_ERRATA_773022 <<
770 bool "ARM errata: incorrect instructio <<
771 depends on CPU_V7 <<
772 help <<
773 This option enables the workaround f <<
774 (up to r0p4) erratum. In certain rar <<
775 loop buffer may deliver incorrect in <<
776 workaround disables the loop buffer <<
777 <<
778 config ARM_ERRATA_818325_852422 <<
779 bool "ARM errata: A12: some seqs of op <<
780 depends on CPU_V7 <<
781 help <<
782 This option enables the workaround f <<
783 - Cortex-A12 818325: Execution of an <<
784 instruction might deadlock. Fixed <<
785 - Cortex-A12 852422: Execution of a <<
786 lead to either a data corruption o <<
787 any Cortex-A12 cores yet. <<
788 This workaround for all both errata <<
789 Feature Register. This bit disables <<
790 sequence of 2 instructions that use <<
791 <<
792 config ARM_ERRATA_821420 <<
793 bool "ARM errata: A12: sequence of VMO <<
794 depends on CPU_V7 <<
795 help <<
796 This option enables the workaround f <<
797 (all revs) erratum. In very rare tim <<
798 of VMOV to Core registers instructio <<
799 one is in the shadow of a branch or <<
800 deadlock when the VMOV instructions <<
801 <<
802 config ARM_ERRATA_825619 <<
803 bool "ARM errata: A12: DMB NSHST/ISHST <<
804 depends on CPU_V7 <<
805 help <<
806 This option enables the workaround f <<
807 (all revs) erratum. Within rare timi <<
808 DMB NSHST or DMB ISHST instruction f <<
809 and Device/Strongly-Ordered loads an <<
810 <<
811 config ARM_ERRATA_857271 <<
812 bool "ARM errata: A12: CPU might deadl <<
813 depends on CPU_V7 <<
814 help <<
815 This option enables the workaround f <<
816 (all revs) erratum. Under very rare <<
817 hang. The workaround is expected to <<
818 <<
819 config ARM_ERRATA_852421 <<
820 bool "ARM errata: A17: DMB ST might fa <<
821 depends on CPU_V7 <<
822 help <<
823 This option enables the workaround f <<
824 (r1p0, r1p1, r1p2) erratum. Under ve <<
825 execution of a DMB ST instruction mi <<
826 stores from GroupA and stores from G <<
827 <<
828 config ARM_ERRATA_852423 <<
829 bool "ARM errata: A17: some seqs of op <<
830 depends on CPU_V7 <<
831 help <<
832 This option enables the workaround f <<
833 - Cortex-A17 852423: Execution of a <<
834 lead to either a data corruption o <<
835 any Cortex-A17 cores yet. <<
836 This is identical to Cortex-A12 erra <<
837 config option from the A12 erratum d <<
838 for and handled. <<
839 <<
840 config ARM_ERRATA_857272 <<
841 bool "ARM errata: A17: CPU might deadl <<
842 depends on CPU_V7 <<
843 help <<
844 This option enables the workaround f <<
845 This erratum is not known to be fixe <<
846 This is identical to Cortex-A12 erra <<
847 config option from the A12 erratum d <<
848 for and handled. <<
849 <<
850 endmenu <<
851 134
852 source "arch/arm/common/Kconfig" !! 135 config ARCH_NO_VIRT_TO_BUS
853 !! 136 def_bool y
854 menu "Bus support" <<
855 137
856 config ISA !! 138 config OF
857 bool !! 139 def_bool y
858 help <<
859 Find out whether you have ISA slots <<
860 name of a bus system, i.e. the way t <<
861 inside your box. Other bus systems <<
862 (MCA) or VESA. ISA is an older syst <<
863 newer boards don't support it. If y <<
864 <<
865 # Select ISA DMA interface <<
866 config ISA_DMA_API <<
867 bool <<
868 140
869 config ARM_ERRATA_814220 !! 141 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
870 bool "ARM errata: Cache maintenance by !! 142 def_bool y if SPARC64
871 depends on CPU_V7 <<
872 help <<
873 The v7 ARM states that all cache and <<
874 operations that do not specify an ad <<
875 each other, in program order. <<
876 However, because of this erratum, an <<
877 operation can overtake an L1 set/way <<
878 This ERRATA only affected the Cortex <<
879 r0p4, r0p5. <<
880 143
881 endmenu !! 144 source "init/Kconfig"
882 145
883 menu "Kernel Features" !! 146 source "kernel/Kconfig.freezer"
884 147
885 config HAVE_SMP !! 148 menu "Processor type and features"
886 bool <<
887 help <<
888 This option should be selected by ma <<
889 capable CPU. <<
890 <<
891 The only effect of this option is to <<
892 options available to the user for co <<
893 149
894 config SMP 150 config SMP
895 bool "Symmetric Multi-Processing" !! 151 bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
896 depends on CPU_V6K || CPU_V7 !! 152 ---help---
897 depends on HAVE_SMP <<
898 depends on MMU || ARM_MPU <<
899 select IRQ_WORK <<
900 help <<
901 This enables support for systems wit 153 This enables support for systems with more than one CPU. If you have
902 a system with only one CPU, say N. I 154 a system with only one CPU, say N. If you have a system with more
903 than one CPU, say Y. 155 than one CPU, say Y.
904 156
905 If you say N here, the kernel will r !! 157 If you say N here, the kernel will run on single and multiprocessor
906 machines, but will use only one CPU 158 machines, but will use only one CPU of a multiprocessor machine. If
907 you say Y here, the kernel will run 159 you say Y here, the kernel will run on many, but not all,
908 uniprocessor machines. On a uniproce !! 160 singleprocessor machines. On a singleprocessor machine, the kernel
909 will run faster if you say N here. 161 will run faster if you say N here.
910 162
911 See also <file:Documentation/arch/x8 !! 163 People using multiprocessor machines who say Y here should also say
912 <file:Documentation/admin-guide/lock !! 164 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
913 <http://tldp.org/HOWTO/SMP-HOWTO.htm !! 165 Management" code will be disabled if you say Y here.
914 166
915 If you don't know what to do here, s !! 167 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
>> 168 available at <http://www.tldp.org/docs.html#howto>.
916 169
917 config SMP_ON_UP !! 170 If you don't know what to do here, say N.
918 bool "Allow booting SMP kernel on unip <<
919 depends on SMP && MMU <<
920 default y <<
921 help <<
922 SMP kernels contain instructions whi <<
923 Enabling this option allows the kern <<
924 these instructions safe. Disabling <<
925 savings. <<
926 171
927 If you don't know what to do here, s !! 172 config NR_CPUS
>> 173 int "Maximum number of CPUs"
>> 174 depends on SMP
>> 175 range 2 32 if SPARC32
>> 176 range 2 1024 if SPARC64
>> 177 default 32 if SPARC32
>> 178 default 64 if SPARC64
928 179
>> 180 source kernel/Kconfig.hz
929 181
930 config CURRENT_POINTER_IN_TPIDRURO !! 182 config RWSEM_GENERIC_SPINLOCK
931 def_bool y !! 183 bool
932 depends on CPU_32v6K && !CPU_V6 !! 184 default y if SPARC32
933 185
934 config IRQSTACKS !! 186 config RWSEM_XCHGADD_ALGORITHM
935 def_bool y !! 187 bool
936 select HAVE_IRQ_EXIT_ON_IRQ_STACK !! 188 default y if SPARC64
937 select HAVE_SOFTIRQ_ON_OWN_STACK <<
938 189
939 config ARM_CPU_TOPOLOGY !! 190 config GENERIC_FIND_NEXT_BIT
940 bool "Support cpu topology definition" !! 191 bool
941 depends on SMP && CPU_V7 <<
942 default y 192 default y
943 help <<
944 Support ARM cpu topology definition. <<
945 affinity between processors which is <<
946 topology of an ARM System. <<
947 <<
948 config SCHED_MC <<
949 bool "Multi-core scheduler support" <<
950 depends on ARM_CPU_TOPOLOGY <<
951 help <<
952 Multi-core scheduler support improve <<
953 making when dealing with multi-core <<
954 increased overhead in some places. I <<
955 193
956 config SCHED_SMT !! 194 config GENERIC_HWEIGHT
957 bool "SMT scheduler support" <<
958 depends on ARM_CPU_TOPOLOGY <<
959 help <<
960 Improves the CPU scheduler's decisio <<
961 MultiThreading at a cost of slightly <<
962 places. If unsure say N here. <<
963 <<
964 config HAVE_ARM_SCU <<
965 bool 195 bool
966 help !! 196 default y if !ULTRA_HAS_POPULATION_COUNT
967 This option enables support for the <<
968 197
969 config HAVE_ARM_ARCH_TIMER !! 198 config GENERIC_CALIBRATE_DELAY
970 bool "Architected timer support" !! 199 bool
971 depends on CPU_V7 !! 200 default y
972 select ARM_ARCH_TIMER <<
973 help <<
974 This option enables support for the <<
975 201
976 config HAVE_ARM_TWD !! 202 config ARCH_MAY_HAVE_PC_FDC
977 bool 203 bool
978 help !! 204 default y
979 This options enables support for the <<
980 205
981 config MCPM !! 206 config EMULATED_CMPXCHG
982 bool "Multi-Cluster Power Management" !! 207 bool
983 depends on CPU_V7 && SMP !! 208 default y if SPARC32
984 help 209 help
985 This option provides the common powe !! 210 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
986 for (multi-)cluster based systems, s !! 211 is emulated, and therefore it is not completely atomic.
987 systems. <<
988 212
989 config MCPM_QUAD_CLUSTER !! 213 # Makefile helpers
>> 214 config SPARC32_SMP
990 bool 215 bool
991 depends on MCPM !! 216 default y
992 help !! 217 depends on SPARC32 && SMP
993 To avoid wasting resources unnecessa <<
994 to 2 clusters by default. <<
995 Platforms with 3 or 4 clusters that <<
996 option to allow the additional clust <<
997 <<
998 config BIG_LITTLE <<
999 bool "big.LITTLE support (Experimental <<
1000 depends on CPU_V7 && SMP <<
1001 select MCPM <<
1002 help <<
1003 This option enables support selecti <<
1004 system architecture. <<
1005 218
1006 config BL_SWITCHER !! 219 config SPARC64_SMP
1007 bool "big.LITTLE switcher support" !! 220 bool
1008 depends on BIG_LITTLE && MCPM && HOTP !! 221 default y
1009 select CPU_PM !! 222 depends on SPARC64 && SMP
1010 help <<
1011 The big.LITTLE "switcher" provides <<
1012 transparently handle transition bet <<
1013 and a cluster of A7's in a big.LITT <<
1014 <<
1015 config BL_SWITCHER_DUMMY_IF <<
1016 tristate "Simple big.LITTLE switcher <<
1017 depends on BL_SWITCHER && DEBUG_KERNE <<
1018 help <<
1019 This is a simple and dummy char dev <<
1020 the big.LITTLE switcher core code. <<
1021 debugging purposes only. <<
1022 223
1023 choice 224 choice
1024 prompt "Memory split" !! 225 prompt "Kernel page size" if SPARC64
1025 depends on MMU !! 226 default SPARC64_PAGE_SIZE_8KB
1026 default VMSPLIT_3G !! 227
>> 228 config SPARC64_PAGE_SIZE_8KB
>> 229 bool "8KB"
1027 help 230 help
1028 Select the desired split between ke !! 231 This lets you select the page size of the kernel.
1029 232
1030 If you are not absolutely sure what !! 233 8KB and 64KB work quite well, since SPARC ELF sections
1031 option alone! !! 234 provide for up to 64KB alignment.
>> 235
>> 236 If you don't know what to do, choose 8KB.
>> 237
>> 238 config SPARC64_PAGE_SIZE_64KB
>> 239 bool "64KB"
1032 240
1033 config VMSPLIT_3G <<
1034 bool "3G/1G user/kernel split <<
1035 config VMSPLIT_3G_OPT <<
1036 depends on !ARM_LPAE <<
1037 bool "3G/1G user/kernel split <<
1038 config VMSPLIT_2G <<
1039 bool "2G/2G user/kernel split <<
1040 config VMSPLIT_1G <<
1041 bool "1G/3G user/kernel split <<
1042 endchoice 241 endchoice
1043 242
1044 config PAGE_OFFSET !! 243 config SECCOMP
1045 hex !! 244 bool "Enable seccomp to safely compute untrusted bytecode"
1046 default PHYS_OFFSET if !MMU !! 245 depends on SPARC64 && PROC_FS
1047 default 0x40000000 if VMSPLIT_1G !! 246 default y
1048 default 0x80000000 if VMSPLIT_2G !! 247 help
1049 default 0xB0000000 if VMSPLIT_3G_OPT !! 248 This kernel feature is useful for number crunching applications
1050 default 0xC0000000 !! 249 that may need to compute untrusted bytecode during their
1051 !! 250 execution. By using pipes or other transports made available to
1052 config KASAN_SHADOW_OFFSET !! 251 the process as file descriptors supporting the read/write
1053 hex !! 252 syscalls, it's possible to isolate those applications in
1054 depends on KASAN !! 253 their own address space using seccomp. Once seccomp is
1055 default 0x1f000000 if PAGE_OFFSET=0x4 !! 254 enabled via /proc/<pid>/seccomp, it cannot be disabled
1056 default 0x5f000000 if PAGE_OFFSET=0x8 !! 255 and the task is only allowed to execute a few safe syscalls
1057 default 0x9f000000 if PAGE_OFFSET=0xC !! 256 defined by each seccomp mode.
1058 default 0x8f000000 if PAGE_OFFSET=0xB <<
1059 default 0xffffffff <<
1060 257
1061 config NR_CPUS !! 258 If unsure, say Y. Only embedded should say N here.
1062 int "Maximum number of CPUs (2-32)" <<
1063 range 2 16 if DEBUG_KMAP_LOCAL <<
1064 range 2 32 if !DEBUG_KMAP_LOCAL <<
1065 depends on SMP <<
1066 default "4" <<
1067 help <<
1068 The maximum number of CPUs that the <<
1069 Up to 32 CPUs can be supported, or <<
1070 debugging is enabled, which uses ha <<
1071 slots as guard regions. <<
1072 259
1073 config HOTPLUG_CPU 260 config HOTPLUG_CPU
1074 bool "Support for hot-pluggable CPUs" 261 bool "Support for hot-pluggable CPUs"
1075 depends on SMP !! 262 depends on SPARC64 && SMP
1076 select GENERIC_IRQ_MIGRATION !! 263 select HOTPLUG
1077 help 264 help
1078 Say Y here to experiment with turni 265 Say Y here to experiment with turning CPUs off and on. CPUs
1079 can be controlled through /sys/devi !! 266 can be controlled through /sys/devices/system/cpu/cpu#.
1080 !! 267 Say N if you want to disable CPU hotplug.
1081 config ARM_PSCI <<
1082 bool "Support for the ARM Power State <<
1083 depends on HAVE_ARM_SMCCC <<
1084 select ARM_PSCI_FW <<
1085 help <<
1086 Say Y here if you want Linux to com <<
1087 implementing the PSCI specification <<
1088 management operations described in <<
1089 0022A ("Power State Coordination In <<
1090 ARM processors"). <<
1091 <<
1092 config HZ_FIXED <<
1093 int <<
1094 default 128 if SOC_AT91RM9200 <<
1095 default 0 <<
1096 268
1097 choice !! 269 config GENERIC_HARDIRQS
1098 depends on HZ_FIXED = 0 !! 270 bool
1099 prompt "Timer frequency" !! 271 default y if SPARC64
1100 272
1101 config HZ_100 !! 273 source "kernel/time/Kconfig"
1102 bool "100 Hz" <<
1103 274
1104 config HZ_200 !! 275 if SPARC64
1105 bool "200 Hz" !! 276 source "drivers/cpufreq/Kconfig"
1106 277
1107 config HZ_250 !! 278 config US3_FREQ
1108 bool "250 Hz" !! 279 tristate "UltraSPARC-III CPU Frequency driver"
>> 280 depends on CPU_FREQ
>> 281 select CPU_FREQ_TABLE
>> 282 help
>> 283 This adds the CPUFreq driver for UltraSPARC-III processors.
1109 284
1110 config HZ_300 !! 285 For details, take a look at <file:Documentation/cpu-freq>.
1111 bool "300 Hz" <<
1112 286
1113 config HZ_500 !! 287 If in doubt, say N.
1114 bool "500 Hz" <<
1115 288
1116 config HZ_1000 !! 289 config US2E_FREQ
1117 bool "1000 Hz" !! 290 tristate "UltraSPARC-IIe CPU Frequency driver"
>> 291 depends on CPU_FREQ
>> 292 select CPU_FREQ_TABLE
>> 293 help
>> 294 This adds the CPUFreq driver for UltraSPARC-IIe processors.
1118 295
1119 endchoice !! 296 For details, take a look at <file:Documentation/cpu-freq>.
1120 297
1121 config HZ !! 298 If in doubt, say N.
1122 int <<
1123 default HZ_FIXED if HZ_FIXED != 0 <<
1124 default 100 if HZ_100 <<
1125 default 200 if HZ_200 <<
1126 default 250 if HZ_250 <<
1127 default 300 if HZ_300 <<
1128 default 500 if HZ_500 <<
1129 default 1000 <<
1130 <<
1131 config SCHED_HRTICK <<
1132 def_bool HIGH_RES_TIMERS <<
1133 <<
1134 config THUMB2_KERNEL <<
1135 bool "Compile the kernel in Thumb-2 m <<
1136 depends on (CPU_V7 || CPU_V7M) && !CP <<
1137 default y if CPU_THUMBONLY <<
1138 select ARM_UNWIND <<
1139 help <<
1140 By enabling this option, the kernel <<
1141 Thumb-2 mode. <<
1142 299
1143 If unsure, say N. !! 300 endif
1144 301
1145 config ARM_PATCH_IDIV !! 302 config US3_MC
1146 bool "Runtime patch udiv/sdiv instruc !! 303 tristate "UltraSPARC-III Memory Controller driver"
1147 depends on CPU_32v7 !! 304 depends on SPARC64
1148 default y 305 default y
1149 help 306 help
1150 The ARM compiler inserts calls to _ !! 307 This adds a driver for the UltraSPARC-III memory controller.
1151 __aeabi_uidiv() when it needs to pe !! 308 Loading this driver allows exact mnemonic strings to be
1152 and unsigned integers. Some v7 CPUs !! 309 printed in the event of a memory error, so that the faulty DIMM
1153 and udiv instructions that can be u !! 310 on the motherboard can be matched to the error.
1154 functions. <<
1155 <<
1156 Enabling this option allows the ker <<
1157 replace the first two instructions <<
1158 with the sdiv or udiv plus "bx lr" <<
1159 it is running on supports them. Typ <<
1160 and less power intensive than runni <<
1161 code to do integer division. <<
1162 <<
1163 config AEABI <<
1164 bool "Use the ARM EABI to compile the <<
1165 !CPU_V7M && !CPU_V6 && !CPU_V <<
1166 default CPU_V7 || CPU_V7M || CPU_V6 | <<
1167 help <<
1168 This option allows for the kernel t <<
1169 ARM ABI (aka EABI). This is only u <<
1170 space environment that is also comp <<
1171 <<
1172 Since there are major incompatibili <<
1173 EABI, especially with regard to str <<
1174 option also changes the kernel sysc <<
1175 disambiguate both ABIs and allow fo <<
1176 (selected with CONFIG_OABI_COMPAT). <<
1177 <<
1178 To use this you need GCC version 4. <<
1179 <<
1180 config OABI_COMPAT <<
1181 bool "Allow old ABI binaries to run w <<
1182 depends on AEABI && !THUMB2_KERNEL <<
1183 help <<
1184 This option preserves the old sysca <<
1185 new (ARM EABI) one. It also provide <<
1186 intercept syscalls that have struct <<
1187 in memory differs between the legac <<
1188 (only for non "thumb" binaries). Th <<
1189 overhead to all syscalls and produc <<
1190 <<
1191 The seccomp filter system will not <<
1192 selected, since there is no way yet <<
1193 between calling conventions during <<
1194 <<
1195 If you know you'll be using only pu <<
1196 can say N here. If this option is n <<
1197 to execute a legacy ABI binary then <<
1198 UNPREDICTABLE (in fact it can be pr <<
1199 at all). If in doubt say N. <<
1200 <<
1201 config ARCH_SELECT_MEMORY_MODEL <<
1202 def_bool y <<
1203 311
1204 config ARCH_FLATMEM_ENABLE !! 312 If in doubt, say Y, as this information can be very useful.
1205 def_bool !(ARCH_RPC || ARCH_SA1100) <<
1206 313
1207 config ARCH_SPARSEMEM_ENABLE !! 314 # Global things across all Sun machines.
1208 def_bool !ARCH_FOOTBRIDGE !! 315 config GENERIC_LOCKBREAK
1209 select SPARSEMEM_STATIC if SPARSEMEM !! 316 bool
1210 <<
1211 config HIGHMEM <<
1212 bool "High Memory Support" <<
1213 depends on MMU <<
1214 select KMAP_LOCAL <<
1215 select KMAP_LOCAL_NON_LINEAR_PTE_ARRA <<
1216 help <<
1217 The address space of ARM processors <<
1218 and it has to accommodate user addr <<
1219 space as well as some memory mapped <<
1220 have a large amount of physical mem <<
1221 memory can be "permanently mapped" <<
1222 memory that is not permanently mapp <<
1223 <<
1224 Depending on the selected kernel/us <<
1225 vmalloc space and actual amount of <<
1226 option which should result in a sli <<
1227 <<
1228 If unsure, say n. <<
1229 <<
1230 config HIGHPTE <<
1231 bool "Allocate 2nd-level pagetables f <<
1232 depends on HIGHMEM <<
1233 default y <<
1234 help <<
1235 The VM uses one page of physical me <<
1236 For systems with a lot of processes <<
1237 precious low memory, eventually lea <<
1238 consumed by page tables. Setting t <<
1239 user-space 2nd level page tables to <<
1240 <<
1241 config ARM_PAN <<
1242 bool "Enable privileged no-access" <<
1243 depends on MMU <<
1244 default y 317 default y
1245 help !! 318 depends on SPARC64 && SMP && PREEMPT
1246 Increase kernel security by ensurin <<
1247 are unable to access userspace addr <<
1248 use-after-free bugs becoming an exp <<
1249 by ensuring that magic values (such <<
1250 fault when dereferenced. <<
1251 319
1252 The implementation uses CPU domains !! 320 choice
1253 disabling of TTBR0 page table walks !! 321 prompt "SPARC64 Huge TLB Page Size"
>> 322 depends on SPARC64 && HUGETLB_PAGE
>> 323 default HUGETLB_PAGE_SIZE_4MB
>> 324
>> 325 config HUGETLB_PAGE_SIZE_4MB
>> 326 bool "4MB"
>> 327
>> 328 config HUGETLB_PAGE_SIZE_512K
>> 329 bool "512K"
>> 330
>> 331 config HUGETLB_PAGE_SIZE_64K
>> 332 depends on !SPARC64_PAGE_SIZE_64KB
>> 333 bool "64K"
1254 334
1255 config CPU_SW_DOMAIN_PAN !! 335 endchoice
1256 def_bool y <<
1257 depends on ARM_PAN && !ARM_LPAE <<
1258 help <<
1259 Enable use of CPU domains to implem <<
1260 336
1261 CPUs with low-vector mappings use a !! 337 config NUMA
1262 Their lower 1MB needs to remain acc !! 338 bool "NUMA support"
1263 the remainder of userspace will bec !! 339 depends on SPARC64 && SMP
1264 340
1265 config CPU_TTBR0_PAN !! 341 config NODES_SHIFT
1266 def_bool y !! 342 int
1267 depends on ARM_PAN && ARM_LPAE !! 343 default "4"
1268 help !! 344 depends on NEED_MULTIPLE_NODES
1269 Enable privileged no-access by disa <<
1270 running in kernel mode. <<
1271 345
1272 config HW_PERF_EVENTS !! 346 # Some NUMA nodes have memory ranges that span
>> 347 # other nodes. Even though a pfn is valid and
>> 348 # between a node's start and end pfns, it may not
>> 349 # reside on that node. See memmap_init_zone()
>> 350 # for details.
>> 351 config NODES_SPAN_OTHER_NODES
1273 def_bool y 352 def_bool y
1274 depends on ARM_PMU !! 353 depends on NEED_MULTIPLE_NODES
1275 354
1276 config ARM_MODULE_PLTS !! 355 config ARCH_POPULATES_NODE_MAP
1277 bool "Use PLTs to allow module memory !! 356 def_bool y if SPARC64
1278 depends on MODULES <<
1279 select KASAN_VMALLOC if KASAN <<
1280 default y <<
1281 help <<
1282 Allocate PLTs when loading modules <<
1283 targets are too far away for their <<
1284 in the instructions themselves can <<
1285 module's PLT. This allows modules t <<
1286 vmalloc area after the dedicated mo <<
1287 exhausted. The modules will use sli <<
1288 rounding up to page size, the actua <<
1289 the same. <<
1290 <<
1291 Disabling this is usually safe for <<
1292 configurations. If unsure, say y. <<
1293 <<
1294 config ARCH_FORCE_MAX_ORDER <<
1295 int "Order of maximal physically cont <<
1296 default "11" if SOC_AM33XX <<
1297 default "8" if SA1111 <<
1298 default "10" <<
1299 help <<
1300 The kernel page allocator limits th <<
1301 contiguous allocations. The limit i <<
1302 defines the maximal power of two of <<
1303 allocated as a single contiguous bl <<
1304 overriding the default setting when <<
1305 large blocks of physically contiguo <<
1306 <<
1307 Don't change if unsure. <<
1308 <<
1309 config ALIGNMENT_TRAP <<
1310 def_bool CPU_CP15_MMU <<
1311 select HAVE_PROC_CPU if PROC_FS <<
1312 help <<
1313 ARM processors cannot fetch/store i <<
1314 naturally aligned on the bus, i.e., <<
1315 address divisible by 4. On 32-bit A <<
1316 fetch/store instructions will be em <<
1317 here, which has a severe performanc <<
1318 correct operation of some network p <<
1319 configuration it is safe to say N, <<
1320 <<
1321 config UACCESS_WITH_MEMCPY <<
1322 bool "Use kernel mem{cpy,set}() for { <<
1323 depends on MMU <<
1324 default y if CPU_FEROCEON <<
1325 help <<
1326 Implement faster copy_to_user and c <<
1327 cores where a 8-word STM instructio <<
1328 memory write throughput than a sequ <<
1329 <<
1330 A possible side effect is a slight <<
1331 between threads sharing the same ad <<
1332 such copy operations with large buf <<
1333 357
1334 However, if the CPU data cache is u !! 358 config ARCH_SELECT_MEMORY_MODEL
1335 this option is unlikely to provide !! 359 def_bool y if SPARC64
1336 360
1337 config PARAVIRT !! 361 config ARCH_SPARSEMEM_ENABLE
1338 bool "Enable paravirtualization code" !! 362 def_bool y if SPARC64
1339 help !! 363 select SPARSEMEM_VMEMMAP_ENABLE
1340 This changes the kernel so it can m <<
1341 under a hypervisor, potentially imp <<
1342 over full virtualization. <<
1343 <<
1344 config PARAVIRT_TIME_ACCOUNTING <<
1345 bool "Paravirtual steal time accounti <<
1346 select PARAVIRT <<
1347 help <<
1348 Select this option to enable fine g <<
1349 accounting. Time spent executing ot <<
1350 the current vCPU is discounted from <<
1351 that, there can be a small performa <<
1352 364
1353 If in doubt, say N here. !! 365 config ARCH_SPARSEMEM_DEFAULT
>> 366 def_bool y if SPARC64
1354 367
1355 config XEN_DOM0 !! 368 source "mm/Kconfig"
1356 def_bool y <<
1357 depends on XEN <<
1358 369
1359 config XEN !! 370 config SCHED_SMT
1360 bool "Xen guest support on ARM" !! 371 bool "SMT (Hyperthreading) scheduler support"
1361 depends on ARM && AEABI && OF !! 372 depends on SPARC64 && SMP
1362 depends on CPU_V7 && !CPU_V6 !! 373 default y
1363 depends on !GENERIC_ATOMIC64 <<
1364 depends on MMU <<
1365 select ARCH_DMA_ADDR_T_64BIT <<
1366 select ARM_PSCI <<
1367 select SWIOTLB <<
1368 select SWIOTLB_XEN <<
1369 select PARAVIRT <<
1370 help 374 help
1371 Say Y if you want to run Linux in a !! 375 SMT scheduler support improves the CPU scheduler's decision making
1372 !! 376 when dealing with SPARC cpus at a cost of slightly increased overhead
1373 config CC_HAVE_STACKPROTECTOR_TLS !! 377 in some places. If unsure say N here.
1374 def_bool $(cc-option,-mtp=cp15 -mstac <<
1375 378
1376 config STACKPROTECTOR_PER_TASK !! 379 config SCHED_MC
1377 bool "Use a unique stack canary value !! 380 bool "Multi-core scheduler support"
1378 depends on STACKPROTECTOR && CURRENT_ !! 381 depends on SPARC64 && SMP
1379 depends on GCC_PLUGINS || CC_HAVE_STA <<
1380 select GCC_PLUGIN_ARM_SSP_PER_TASK if <<
1381 default y 382 default y
1382 help 383 help
1383 Due to the fact that GCC uses an or !! 384 Multi-core scheduler support improves the CPU scheduler's decision
1384 which to load the value of the stac !! 385 making when dealing with multi-core CPU chips at a cost of slightly
1385 change at reboot time on SMP system !! 386 increased overhead in some places. If unsure say N here.
1386 kernel's address space are forced t <<
1387 the entire duration that the system <<
1388 387
1389 Enable this option to switch to a d !! 388 if SPARC64
1390 different canary value for each tas !! 389 source "kernel/Kconfig.preempt"
>> 390 endif
1391 391
1392 endmenu !! 392 config CMDLINE_BOOL
>> 393 bool "Default bootloader kernel arguments"
>> 394 depends on SPARC64
>> 395
>> 396 config CMDLINE
>> 397 string "Initial kernel command string"
>> 398 depends on CMDLINE_BOOL
>> 399 default "console=ttyS0,9600 root=/dev/sda1"
>> 400 help
>> 401 Say Y here if you want to be able to pass default arguments to
>> 402 the kernel. This will be overridden by the bootloader, if you
>> 403 use one (such as SILO). This is most useful if you want to boot
>> 404 a kernel from TFTP, and want default options to be available
>> 405 with having them passed on the command line.
>> 406
>> 407 NOTE: This option WILL override the PROM bootargs setting!
>> 408
>> 409 config SUN_PM
>> 410 bool
>> 411 default y if SPARC32
>> 412 help
>> 413 Enable power management and CPU standby features on supported
>> 414 SPARC platforms.
>> 415
>> 416 config SPARC_LED
>> 417 tristate "Sun4m LED driver"
>> 418 depends on SPARC32
>> 419 help
>> 420 This driver toggles the front-panel LED on sun4m systems
>> 421 in a user-specifiable manner. Its state can be probed
>> 422 by reading /proc/led and its blinking mode can be changed
>> 423 via writes to /proc/led
>> 424
>> 425 config SERIAL_CONSOLE
>> 426 bool
>> 427 depends on SPARC32
>> 428 default y
>> 429 ---help---
>> 430 If you say Y here, it will be possible to use a serial port as the
>> 431 system console (the system console is the device which receives all
>> 432 kernel messages and warnings and which allows logins in single user
>> 433 mode). This could be useful if some terminal or printer is connected
>> 434 to that serial port.
>> 435
>> 436 Even if you say Y here, the currently visible virtual console
>> 437 (/dev/tty0) will still be used as the system console by default, but
>> 438 you can alter that using a kernel command line option such as
>> 439 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 440 your boot loader (silo) about how to pass options to the kernel at
>> 441 boot time.)
>> 442
>> 443 If you don't have a graphics card installed and you say Y here, the
>> 444 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 445 system console.
1393 446
1394 menu "Boot options" !! 447 If unsure, say N.
1395 448
1396 config USE_OF !! 449 config SPARC_LEON
1397 bool "Flattened Device Tree support" !! 450 bool "Sparc Leon processor family"
1398 select IRQ_DOMAIN !! 451 depends on SPARC32
1399 select OF !! 452 ---help---
1400 help !! 453 If you say Y here if you are running on a SPARC-LEON processor.
1401 Include support for flattened devic !! 454 The LEON processor is a synthesizable VHDL model of the
>> 455 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 456 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 457 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 458 toolchain at www.gaisler.com.
1402 459
1403 config ARCH_WANT_FLAT_DTB_INSTALL !! 460 endmenu
1404 def_bool y <<
1405 461
1406 config ATAGS !! 462 menu "Bus options (PCI etc.)"
1407 bool "Support for the traditional ATA !! 463 config SBUS
>> 464 bool
1408 default y 465 default y
1409 help <<
1410 This is the traditional way of pass <<
1411 time. If you are solely relying on <<
1412 the ARM_ATAG_DTB_COMPAT option) the <<
1413 to remove ATAGS support from your k <<
1414 <<
1415 config DEPRECATED_PARAM_STRUCT <<
1416 bool "Provide old way to pass kernel <<
1417 depends on ATAGS <<
1418 help <<
1419 This was deprecated in 2001 and ann <<
1420 Some old boot loaders still use thi <<
1421 466
1422 # Compressed boot loader in ROM. Yes, we rea !! 467 config SBUSCHAR
1423 # TEXT and BSS so we preserve their values in !! 468 bool
1424 config ZBOOT_ROM_TEXT !! 469 default y
1425 hex "Compressed ROM boot loader base <<
1426 default 0x0 <<
1427 help <<
1428 The physical address at which the R <<
1429 placed in the target. Platforms wh <<
1430 ROM-able zImage formats normally se <<
1431 value in their defconfig file. <<
1432 <<
1433 If ZBOOT_ROM is not enabled, this h <<
1434 <<
1435 config ZBOOT_ROM_BSS <<
1436 hex "Compressed ROM boot loader BSS a <<
1437 default 0x0 <<
1438 help <<
1439 The base address of an area of read <<
1440 for the ROM-able zImage which must <<
1441 decompressor is running. It must be <<
1442 entire decompressed kernel plus an <<
1443 Platforms which normally make use o <<
1444 normally set this to a suitable val <<
1445 <<
1446 If ZBOOT_ROM is not enabled, this h <<
1447 <<
1448 config ZBOOT_ROM <<
1449 bool "Compressed boot loader in ROM/f <<
1450 depends on ZBOOT_ROM_TEXT != ZBOOT_RO <<
1451 depends on !ARM_APPENDED_DTB && !XIP_ <<
1452 help <<
1453 Say Y here if you intend to execute <<
1454 (zImage) directly from ROM or flash <<
1455 470
1456 config ARM_APPENDED_DTB !! 471 config SUN_LDOMS
1457 bool "Use appended device tree blob t !! 472 bool "Sun Logical Domains support"
1458 depends on OF !! 473 depends on SPARC64
1459 help 474 help
1460 With this option, the boot code wil !! 475 Say Y here is you want to support virtual devices via
1461 (DTB) appended to zImage !! 476 Logical Domains.
1462 (e.g. cat zImage <filename>.dtb > z <<
1463 <<
1464 This is meant as a backward compati <<
1465 systems with a bootloader that can' <<
1466 the documented boot protocol using <<
1467 <<
1468 Beware that there is very little in <<
1469 this option being confused by lefto <<
1470 look like a DTB header after a rebo <<
1471 to zImage. Do not leave this optio <<
1472 if you don't intend to always appen <<
1473 location into r2 of a bootloader pr <<
1474 to this option. <<
1475 <<
1476 config ARM_ATAG_DTB_COMPAT <<
1477 bool "Supplement the appended DTB wit <<
1478 depends on ARM_APPENDED_DTB <<
1479 help <<
1480 Some old bootloaders can't be updat <<
1481 they provide ATAGs with memory conf <<
1482 the kernel cmdline string, etc. Su <<
1483 provided by the bootloader and can' <<
1484 DTB. To allow a device tree enable <<
1485 bootloaders, this option allows zIm <<
1486 from the ATAG list and store it at <<
1487 <<
1488 choice <<
1489 prompt "Kernel command line type" <<
1490 depends on ARM_ATAG_DTB_COMPAT <<
1491 default ARM_ATAG_DTB_COMPAT_CMDLINE_F <<
1492 477
1493 config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTL !! 478 config PCI
1494 bool "Use bootloader kernel arguments !! 479 bool "Support for PCI and PS/2 keyboard/mouse"
1495 help 480 help
1496 Uses the command-line options passe !! 481 Find out whether your system includes a PCI bus. PCI is the name of
1497 the device tree bootargs property. !! 482 a bus system, i.e. the way the CPU talks to the other stuff inside
1498 any, the device tree bootargs prope !! 483 your box. If you say Y here, the kernel will include drivers and
>> 484 infrastructure code to support PCI bus devices.
1499 485
1500 config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND !! 486 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
1501 bool "Extend with bootloader kernel a !! 487 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
1502 help !! 488 All of these platforms are extremely obscure, so say N if unsure.
1503 The command-line arguments provided <<
1504 appended to the the device tree boo <<
1505 489
1506 endchoice !! 490 config PCI_DOMAINS
>> 491 def_bool PCI if SPARC64
1507 492
1508 config CMDLINE !! 493 config PCI_SYSCALL
1509 string "Default kernel command string !! 494 def_bool PCI
1510 default "" <<
1511 help <<
1512 On some architectures (e.g. CATS), <<
1513 for the boot loader to pass argumen <<
1514 architectures, you should supply so <<
1515 time by entering them here. As a mi <<
1516 memory size and the root device (e. <<
1517 495
1518 choice !! 496 source "drivers/pci/Kconfig"
1519 prompt "Kernel command line type" <<
1520 depends on CMDLINE != "" <<
1521 default CMDLINE_FROM_BOOTLOADER <<
1522 497
1523 config CMDLINE_FROM_BOOTLOADER !! 498 source "drivers/pcmcia/Kconfig"
1524 bool "Use bootloader kernel arguments <<
1525 help <<
1526 Uses the command-line options passe <<
1527 the boot loader doesn't provide any <<
1528 string provided in CMDLINE will be <<
1529 499
1530 config CMDLINE_EXTEND !! 500 config SUN_OPENPROMFS
1531 bool "Extend bootloader kernel argume !! 501 tristate "Openprom tree appears in /proc/openprom"
1532 help 502 help
1533 The command-line arguments provided !! 503 If you say Y, the OpenPROM device tree will be available as a
1534 appended to the default kernel comm !! 504 virtual file system, which you can mount to /proc/openprom by "mount
>> 505 -t openpromfs none /proc/openprom".
1535 506
1536 config CMDLINE_FORCE !! 507 To compile the /proc/openprom support as a module, choose M here: the
1537 bool "Always use the default kernel c !! 508 module will be called openpromfs.
1538 help <<
1539 Always use the default kernel comma <<
1540 loader passes other arguments to th <<
1541 This is useful if you cannot or don <<
1542 command-line options your boot load <<
1543 endchoice <<
1544 509
1545 config XIP_KERNEL !! 510 Only choose N if you know in advance that you will not need to modify
1546 bool "Kernel Execute-In-Place from RO !! 511 OpenPROM settings on the running system.
1547 depends on !ARM_LPAE && !ARCH_MULTIPL <<
1548 depends on !ARM_PATCH_IDIV && !ARM_PA <<
1549 help <<
1550 Execute-In-Place allows the kernel <<
1551 directly addressable by the CPU, su <<
1552 space since the text section of the <<
1553 to RAM. Read-write sections, such <<
1554 are still copied to RAM. The XIP k <<
1555 it has to run directly from flash, <<
1556 store it. The flash address used t <<
1557 and for storing it, is configuratio <<
1558 say Y here, you must know the prope <<
1559 store the kernel image depending on <<
1560 <<
1561 Also note that the make target beco <<
1562 "make zImage" or "make Image". The <<
1563 ROM memory will be arch/arm/boot/xi <<
1564 512
1565 If unsure, say N. !! 513 # Makefile helpers
1566 !! 514 config SPARC32_PCI
1567 config XIP_PHYS_ADDR !! 515 bool
1568 hex "XIP Kernel Physical Location" <<
1569 depends on XIP_KERNEL <<
1570 default "0x00080000" <<
1571 help <<
1572 This is the physical address in you <<
1573 be linked for and stored to. This <<
1574 own flash usage. <<
1575 <<
1576 config XIP_DEFLATED_DATA <<
1577 bool "Store kernel .data section comp <<
1578 depends on XIP_KERNEL <<
1579 select ZLIB_INFLATE <<
1580 help <<
1581 Before the kernel is actually execu <<
1582 copied to RAM from ROM. This option <<
1583 in compressed form and decompressed <<
1584 copied, saving some precious ROM sp <<
1585 slightly longer boot delay. <<
1586 <<
1587 config ARCH_SUPPORTS_KEXEC <<
1588 def_bool (!SMP || PM_SLEEP_SMP) && MM <<
1589 <<
1590 config ATAGS_PROC <<
1591 bool "Export atags in procfs" <<
1592 depends on ATAGS && KEXEC <<
1593 default y 516 default y
1594 help !! 517 depends on SPARC32 && PCI
1595 Should the atags used to boot the k <<
1596 file in procfs. Useful with kexec. <<
1597 518
1598 config ARCH_SUPPORTS_CRASH_DUMP !! 519 config SPARC64_PCI
1599 def_bool y !! 520 bool
1600 <<
1601 config AUTO_ZRELADDR <<
1602 bool "Auto calculation of the decompr <<
1603 default !(ARCH_FOOTBRIDGE || ARCH_RPC <<
1604 help <<
1605 ZRELADDR is the physical address wh <<
1606 image will be placed. If AUTO_ZRELA <<
1607 will be determined at run-time, eit <<
1608 with 0xf8000000, or, if invalid, fr <<
1609 This assumes the zImage being place <<
1610 start of memory. <<
1611 <<
1612 config EFI_STUB <<
1613 bool <<
1614 <<
1615 config EFI <<
1616 bool "UEFI runtime support" <<
1617 depends on OF && !CPU_BIG_ENDIAN && M <<
1618 select UCS2_STRING <<
1619 select EFI_PARAMS_FROM_FDT <<
1620 select EFI_STUB <<
1621 select EFI_GENERIC_STUB <<
1622 select EFI_RUNTIME_WRAPPERS <<
1623 help <<
1624 This option provides support for ru <<
1625 by UEFI firmware (such as non-volat <<
1626 clock, and platform reset). A UEFI <<
1627 allow the kernel to be booted as an <<
1628 is only useful for kernels that may <<
1629 UEFI firmware. <<
1630 <<
1631 config DMI <<
1632 bool "Enable support for SMBIOS (DMI) <<
1633 depends on EFI <<
1634 default y 521 default y
1635 help !! 522 depends on SPARC64 && PCI
1636 This enables SMBIOS/DMI feature for <<
1637 <<
1638 This option is only useful on syste <<
1639 However, even with this option, the <<
1640 continue to boot on existing non-UE <<
1641 <<
1642 NOTE: This does *NOT* enable or enc <<
1643 i.e., the the practice of identifyi <<
1644 decide whether certain workarounds <<
1645 firmware need to be enabled. This w <<
1646 to be enabled much earlier than we <<
1647 523
1648 endmenu 524 endmenu
1649 525
1650 menu "CPU Power Management" !! 526 menu "Executable file formats"
1651 527
1652 source "drivers/cpufreq/Kconfig" !! 528 source "fs/Kconfig.binfmt"
1653 529
1654 source "drivers/cpuidle/Kconfig" !! 530 config COMPAT
1655 <<
1656 endmenu <<
1657 <<
1658 menu "Floating point emulation" <<
1659 <<
1660 comment "At least one emulation must be selec <<
1661 <<
1662 config FPE_NWFPE <<
1663 bool "NWFPE math emulation" <<
1664 depends on (!AEABI || OABI_COMPAT) && <<
1665 help <<
1666 Say Y to include the NWFPE floating <<
1667 This is necessary to run most binar <<
1668 support floating point hardware so <<
1669 your machine has an FPA or floating <<
1670 <<
1671 You may say N here if you are going <<
1672 early in the bootup. <<
1673 <<
1674 config FPE_NWFPE_XP <<
1675 bool "Support extended precision" <<
1676 depends on FPE_NWFPE <<
1677 help <<
1678 Say Y to include 80-bit support in <<
1679 emulator. Otherwise, only 32 and 6 <<
1680 Note that gcc does not generate 80- <<
1681 so in most cases this option only e <<
1682 floating point emulator without any <<
1683 <<
1684 You almost surely want to say N her <<
1685 <<
1686 config FPE_FASTFPE <<
1687 bool "FastFPE math emulation (EXPERIM <<
1688 depends on (!AEABI || OABI_COMPAT) && <<
1689 help <<
1690 Say Y here to include the FAST floa <<
1691 This is an experimental much faster <<
1692 precision for the mantissa. It doe <<
1693 It is very simple, and approximatel <<
1694 <<
1695 It should be sufficient for most pr <<
1696 for scientific calculations, but yo <<
1697 If you do not feel you need a faste <<
1698 choose NWFPE. <<
1699 <<
1700 config VFP <<
1701 bool "VFP-format floating point maths <<
1702 depends on CPU_V6 || CPU_V6K || CPU_A <<
1703 help <<
1704 Say Y to include VFP support code i <<
1705 if your hardware includes a VFP uni <<
1706 <<
1707 Please see <file:Documentation/arch <<
1708 release notes and additional status <<
1709 <<
1710 Say N if your target does not have <<
1711 <<
1712 config VFPv3 <<
1713 bool 531 bool
1714 depends on VFP !! 532 depends on SPARC64
1715 default y if CPU_V7 !! 533 default y
1716 !! 534 select COMPAT_BINFMT_ELF
1717 config NEON <<
1718 bool "Advanced SIMD (NEON) Extension <<
1719 depends on VFPv3 && CPU_V7 <<
1720 help <<
1721 Say Y to include support code for N <<
1722 Extension. <<
1723 535
1724 config KERNEL_MODE_NEON !! 536 config SYSVIPC_COMPAT
1725 bool "Support for NEON in kernel mode !! 537 bool
1726 depends on NEON && AEABI !! 538 depends on COMPAT && SYSVIPC
1727 help !! 539 default y
1728 Say Y to include support for NEON i <<
1729 540
1730 endmenu 541 endmenu
1731 542
1732 menu "Power management options" !! 543 source "net/Kconfig"
1733 544
1734 source "kernel/power/Kconfig" !! 545 source "drivers/Kconfig"
1735 546
1736 config ARCH_SUSPEND_POSSIBLE !! 547 source "drivers/sbus/char/Kconfig"
1737 depends on CPU_ARM920T || CPU_ARM926T <<
1738 CPU_V6 || CPU_V6K || CPU_V7 | <<
1739 def_bool y <<
1740 548
1741 config ARM_CPU_SUSPEND !! 549 source "fs/Kconfig"
1742 def_bool PM_SLEEP || BL_SWITCHER || A <<
1743 depends on ARCH_SUSPEND_POSSIBLE <<
1744 550
1745 config ARCH_HIBERNATION_POSSIBLE !! 551 source "arch/sparc/Kconfig.debug"
1746 bool <<
1747 depends on MMU <<
1748 default y if ARCH_SUSPEND_POSSIBLE <<
1749 552
1750 endmenu !! 553 source "security/Kconfig"
>> 554
>> 555 source "crypto/Kconfig"
1751 556
1752 source "arch/arm/Kconfig.assembler" !! 557 source "lib/Kconfig"
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