1 # SPDX-License-Identifier: GPL-2.0 !! 1 #
2 config ARM !! 2 # For a description of the syntax of this configuration file,
>> 3 # see Documentation/kbuild/kconfig-language.txt.
>> 4 #
>> 5 config ALPHA
3 bool 6 bool
4 default y 7 default y
5 select ARCH_32BIT_OFF_T !! 8 select HAVE_AOUT
6 select ARCH_CORRECT_STACKTRACE_ON_KRET !! 9 select HAVE_IDE
7 select ARCH_HAS_BINFMT_FLAT !! 10 select HAVE_OPROFILE
8 select ARCH_HAS_CPU_CACHE_ALIASING !! 11 select HAVE_SYSCALL_WRAPPERS
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 <<
94 select HAVE_ARCH_TRANSPARENT_HUGEPAGE <<
95 select HAVE_ARM_SMCCC if CPU_V7 <<
96 select HAVE_EBPF_JIT if !CPU_ENDIAN_BE <<
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 <<
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 <<
148 select RTC_LIB <<
149 select SPARSE_IRQ if !(ARCH_FOOTBRIDGE <<
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 <<
166 config ARM_HAS_GROUP_RELOCS <<
167 def_bool y <<
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 12 help
188 DMA mapping framework by default ali !! 13 The Alpha is a 64-bit general-purpose processor designed and
189 PAGE_SIZE order which is greater tha !! 14 marketed by the Digital Equipment Corporation of blessed memory,
190 size. This works well for buffers up !! 15 now Hewlett-Packard. The Alpha Linux project has a home page at
191 for larger buffers it just a waste o !! 16 <http://www.alphalinux.org/>.
192 relatively small addressing window ( <<
193 virtual space with just a few alloca <<
194 17
195 With this parameter you can specify !! 18 config 64BIT
196 DMA IOMMU buffers. Larger buffers wi !! 19 def_bool y
197 specified order. The order is expres <<
198 by the PAGE_SIZE. <<
199 <<
200 endif <<
201 <<
202 config SYS_SUPPORTS_APM_EMULATION <<
203 bool <<
204 <<
205 config HAVE_TCM <<
206 bool <<
207 select GENERIC_ALLOCATOR <<
208 <<
209 config HAVE_PROC_CPU <<
210 bool <<
211 <<
212 config NO_IOPORT_MAP <<
213 bool <<
214 20
215 config SBUS !! 21 config MMU
216 bool 22 bool
>> 23 default y
217 24
218 config STACKTRACE_SUPPORT !! 25 config RWSEM_GENERIC_SPINLOCK
219 bool 26 bool
220 default y <<
221 27
222 config LOCKDEP_SUPPORT !! 28 config RWSEM_XCHGADD_ALGORITHM
223 bool 29 bool
224 default y 30 default y
225 31
226 config ARCH_HAS_ILOG2_U32 32 config ARCH_HAS_ILOG2_U32
227 bool 33 bool
>> 34 default n
228 35
229 config ARCH_HAS_ILOG2_U64 36 config ARCH_HAS_ILOG2_U64
230 bool 37 bool
>> 38 default n
231 39
232 config ARCH_HAS_BANDGAP !! 40 config GENERIC_FIND_NEXT_BIT
233 bool <<
234 <<
235 config FIX_EARLYCON_MEM <<
236 def_bool y if MMU <<
237 <<
238 config GENERIC_HWEIGHT <<
239 bool 41 bool
240 default y 42 default y
241 43
242 config GENERIC_CALIBRATE_DELAY 44 config GENERIC_CALIBRATE_DELAY
243 bool 45 bool
244 default y 46 default y
245 47
246 config ARCH_MAY_HAVE_PC_FDC !! 48 config GENERIC_TIME
247 bool 49 bool
>> 50 default y
248 51
249 config ARCH_SUPPORTS_UPROBES !! 52 config ARCH_USES_GETTIMEOFFSET
250 def_bool y <<
251 <<
252 config GENERIC_ISA_DMA <<
253 bool 53 bool
>> 54 default y
254 55
255 config FIQ !! 56 config ZONE_DMA
256 bool 57 bool
>> 58 default y
257 59
258 config ARCH_MTD_XIP !! 60 config GENERIC_ISA_DMA
259 bool 61 bool
260 <<
261 config ARM_PATCH_PHYS_VIRT <<
262 bool "Patch physical to virtual transl <<
263 default y 62 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 63
277 config NEED_MACH_IO_H !! 64 config GENERIC_IOMAP
278 bool 65 bool
279 help !! 66 default n
280 Select this when mach/io.h is requir <<
281 definitions for this platform. The <<
282 be avoided when possible. <<
283 67
284 config NEED_MACH_MEMORY_H !! 68 config GENERIC_HARDIRQS
285 bool 69 bool
286 help <<
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 <<
315 config MMU <<
316 bool "MMU-based Paged Memory Managemen <<
317 default y 70 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 71
336 config ARCH_MULTIPLATFORM !! 72 config GENERIC_IRQ_PROBE
337 bool "Require kernel to be portable to !! 73 bool
338 depends on MMU && !(ARCH_FOOTBRIDGE || <<
339 default y 74 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 75
378 source "arch/arm/mach-digicolor/Kconfig" !! 76 config AUTO_IRQ_AFFINITY
379 !! 77 bool
380 source "arch/arm/mach-dove/Kconfig" !! 78 depends on SMP
381 !! 79 default y
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 <<
404 source "arch/arm/mach-mediatek/Kconfig" <<
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 80
454 source "arch/arm/mach-stm32/Kconfig" !! 81 source "init/Kconfig"
>> 82 source "kernel/Kconfig.freezer"
455 83
456 source "arch/arm/mach-sunxi/Kconfig" <<
457 84
458 source "arch/arm/mach-tegra/Kconfig" !! 85 menu "System setup"
459 86
460 source "arch/arm/mach-ux500/Kconfig" !! 87 choice
>> 88 prompt "Alpha system type"
>> 89 default ALPHA_GENERIC
>> 90 ---help---
>> 91 This is the system type of your hardware. A "generic" kernel will
>> 92 run on any supported Alpha system. However, if you configure a
>> 93 kernel for your specific system, it will be faster and smaller.
461 94
462 source "arch/arm/mach-versatile/Kconfig" !! 95 To find out what type of Alpha system you have, you may want to
>> 96 check out the Linux/Alpha FAQ, accessible on the WWW from
>> 97 <http://www.alphalinux.org/>. In summary:
463 98
464 source "arch/arm/mach-vt8500/Kconfig" !! 99 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
>> 100 Alpha-XL XL-233, XL-266
>> 101 AlphaBook1 Alpha laptop
>> 102 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
>> 103 Cabriolet AlphaPC64, AlphaPCI64
>> 104 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
>> 105 EB164 EB164 21164 evaluation board
>> 106 EB64+ EB64+ 21064 evaluation board
>> 107 EB66 EB66 21066 evaluation board
>> 108 EB66+ EB66+ 21066 evaluation board
>> 109 Jensen DECpc 150, DEC 2000 models 300, 500
>> 110 LX164 AlphaPC164-LX
>> 111 Lynx AS 2100A
>> 112 Miata Personal Workstation 433/500/600 a/au
>> 113 Marvel AlphaServer ES47 / ES80 / GS1280
>> 114 Mikasa AS 1000
>> 115 Noname AXPpci33, UDB (Multia)
>> 116 Noritake AS 1000A, AS 600A, AS 800
>> 117 PC164 AlphaPC164
>> 118 Rawhide AS 1200, AS 4000, AS 4100
>> 119 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
>> 120 SX164 AlphaPC164-SX
>> 121 Sable AS 2000, AS 2100
>> 122 Shark DS 20L
>> 123 Takara Takara (OEM)
>> 124 Titan AlphaServer ES45 / DS25 / DS15
>> 125 Wildfire AlphaServer GS 40/80/160/320
465 126
466 source "arch/arm/mach-zynq/Kconfig" !! 127 If you don't know what to do, choose "generic".
467 128
468 # ARMv7-M architecture !! 129 config ALPHA_GENERIC
469 config ARCH_LPC18XX !! 130 bool "Generic"
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 131 help
477 Support for NXP's LPC18xx Cortex-M3 !! 132 A generic kernel will run on all supported Alpha hardware.
478 high performance microcontrollers. <<
479 133
480 config ARCH_MPS2 !! 134 config ALPHA_ALCOR
481 bool "ARM MPS2 platform" !! 135 bool "Alcor/Alpha-XLT"
482 depends on ARM_SINGLE_ARMV7M <<
483 select ARM_AMBA <<
484 select CLKSRC_MPS2 <<
485 help 136 help
486 Support for Cortex-M Prototyping Sys !! 137 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
487 with a range of available cores like !! 138 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
488 !! 139 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
489 Please, note that depends which Appl !! 140 controller (256-bit memory bus) and a PCI interface. It also does
490 for the platform may vary, so adjust !! 141 all the work required to support an external Bcache and to maintain
491 !! 142 memory coherence when a PCI device DMAs into (or out of) memory.
492 # Definitions to make life easier <<
493 config ARCH_ACORN <<
494 bool <<
495 143
496 config PLAT_ORION !! 144 config ALPHA_XL
497 bool !! 145 bool "Alpha-XL"
498 select CLKSRC_MMIO !! 146 help
499 select GENERIC_IRQ_CHIP !! 147 XL-233 and XL-266-based Alpha systems.
500 select IRQ_DOMAIN <<
501 <<
502 config PLAT_ORION_LEGACY <<
503 bool <<
504 select PLAT_ORION <<
505 <<
506 config PLAT_VERSATILE <<
507 bool <<
508 <<
509 source "arch/arm/mm/Kconfig" <<
510 148
511 config IWMMXT !! 149 config ALPHA_BOOK1
512 bool "Enable iWMMXt support" !! 150 bool "AlphaBook1"
513 depends on CPU_XSCALE || CPU_XSC3 || C <<
514 default y if PXA27x || PXA3xx || ARCH_ <<
515 help 151 help
516 Enable support for iWMMXt context sw !! 152 Dec AlphaBook1/Burns Alpha-based laptops.
517 running on a CPU that supports it. <<
518 153
519 if !MMU !! 154 config ALPHA_AVANTI_CH
520 source "arch/arm/Kconfig-nommu" !! 155 bool "Avanti"
521 endif <<
522 156
523 config PJ4B_ERRATA_4742 !! 157 config ALPHA_CABRIOLET
524 bool "PJ4B Errata 4742: IDLE Wake Up C !! 158 bool "Cabriolet"
525 depends on CPU_PJ4B && MACH_ARMADA_370 <<
526 default y <<
527 help 159 help
528 When coming out of either a Wait for !! 160 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
529 Event (WFE) IDLE states, a specific !! 161 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
530 the retiring WFI/WFE instructions an !! 162 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
531 instructions. This sensitivity can !! 163 Bcache SIMMs. Requires power supply with 3.3V output.
532 Workaround: <<
533 The software must insert either a Da <<
534 or Data Memory Barrier (DMB) command <<
535 instruction <<
536 164
537 config ARM_ERRATA_326103 !! 165 config ALPHA_DP264
538 bool "ARM errata: FSR write bit incorr !! 166 bool "DP264"
539 depends on CPU_V6 <<
540 help 167 help
541 Executing a SWP instruction to read- !! 168 Various 21264 systems with the tsunami core logic chipset.
542 of the FSR on the ARM 1136 prior to !! 169 API Networks: 264DP, UP2000(+), CS20;
543 treat the access as a read, preventi !! 170 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
544 causing the faulting task to liveloc <<
545 171
546 config ARM_ERRATA_411920 !! 172 config ALPHA_EB164
547 bool "ARM errata: Invalidation of the !! 173 bool "EB164"
548 depends on CPU_V6 || CPU_V6K <<
549 help 174 help
550 Invalidation of the Instruction Cach !! 175 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
551 fail. This erratum is present in 113 !! 176 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
552 It does not affect the MPCore. This !! 177 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
553 recommended workaround. !! 178 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
>> 179 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
>> 180 motherboard. Requires power supply with 3.3V output.
554 181
555 config ARM_ERRATA_430973 !! 182 config ALPHA_EB64P_CH
556 bool "ARM errata: Stale prediction on !! 183 bool "EB64+"
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. <<
570 184
571 config ARM_ERRATA_458693 !! 185 config ALPHA_EB66
572 bool "ARM errata: Processor deadlock w !! 186 bool "EB66"
573 depends on CPU_V7 <<
574 depends on !ARCH_MULTIPLATFORM <<
575 help 187 help
576 This option enables the workaround f !! 188 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
577 erratum. For very specific sequences !! 189 identical to EB64+. Baby PC-AT size. Runs from standard PC power
578 possible for a hazard condition inte !! 190 supply. The EB66 schematic was published as a marketing poster
579 be incorrectly associated with a dif !! 191 advertising the 21066 as "the first microprocessor in the world with
580 hazard might then cause a processor !! 192 embedded PCI".
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. <<
586 193
587 config ARM_ERRATA_460075 !! 194 config ALPHA_EB66P
588 bool "ARM errata: Data written to the !! 195 bool "EB66+"
589 depends on CPU_V7 <<
590 depends on !ARCH_MULTIPLATFORM <<
591 help 196 help
592 This option enables the workaround f !! 197 Later variant of the EB66 board.
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. <<
601 198
602 config ARM_ERRATA_742230 !! 199 config ALPHA_EIGER
603 bool "ARM errata: DMB operation may be !! 200 bool "Eiger"
604 depends on CPU_V7 && SMP <<
605 depends on !ARCH_MULTIPLATFORM <<
606 help 201 help
607 This option enables the workaround f !! 202 Apparently an obscure OEM single-board computer based on the
608 (r1p0..r2p2) erratum. Under rare cir !! 203 Typhoon/Tsunami chipset family. Information on it is scanty.
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. <<
617 204
618 config ARM_ERRATA_742231 !! 205 config ALPHA_JENSEN
619 bool "ARM errata: Incorrect hazard han !! 206 bool "Jensen"
620 depends on CPU_V7 && SMP <<
621 depends on !ARCH_MULTIPLATFORM <<
622 help 207 help
623 This option enables the workaround f !! 208 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
624 (r2p0..r2p2) erratum. Under certain !! 209 of the first-generation Alpha systems. A number of these systems
625 Cortex-A9 MPCore micro-architecture, !! 210 seem to be available on the second- hand market. The Jensen is a
626 accessing some data located in the s !! 211 floor-standing tower system which originally used a 150MHz 21064 It
627 data due to bad handling of the addr !! 212 used programmable logic to interface a 486 EISA I/O bridge to the
628 replaced from one of the CPUs at the !! 213 CPU.
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. <<
635 214
636 config ARM_ERRATA_643719 !! 215 config ALPHA_LX164
637 bool "ARM errata: LoUIS bit field in C !! 216 bool "LX164"
638 depends on CPU_V7 && SMP <<
639 default y <<
640 help 217 help
641 This option enables the workaround f !! 218 A technical overview of this board is available at
642 r1p0) erratum. On affected cores the !! 219 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
643 register returns zero when it should <<
644 corrects this value, ensuring cache <<
645 it behave as intended and avoiding d <<
646 220
647 config ARM_ERRATA_720789 !! 221 config ALPHA_LYNX
648 bool "ARM errata: TLBIASIDIS and TLBIM !! 222 bool "Lynx"
649 depends on CPU_V7 <<
650 help 223 help
651 This option enables the workaround f !! 224 AlphaServer 2100A-based systems.
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. <<
658 225
659 config ARM_ERRATA_743622 !! 226 config ALPHA_MARVEL
660 bool "ARM errata: Faulty hazard checki !! 227 bool "Marvel"
661 depends on CPU_V7 <<
662 depends on !ARCH_MULTIPLATFORM <<
663 help 228 help
664 This option enables the workaround f !! 229 AlphaServer ES47 / ES80 / GS1280 based on EV7.
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 <<
674 230
675 config ARM_ERRATA_751472 !! 231 config ALPHA_MIATA
676 bool "ARM errata: Interrupted ICIALLUI !! 232 bool "Miata"
677 depends on CPU_V7 <<
678 depends on !ARCH_MULTIPLATFORM <<
679 help 233 help
680 This option enables the workaround f !! 234 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
681 to r3p0) erratum. An interrupted ICI !! 235 or 600au).
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. <<
689 236
690 config ARM_ERRATA_754322 !! 237 config ALPHA_MIKASA
691 bool "ARM errata: possible faulty MMU !! 238 bool "Mikasa"
692 depends on CPU_V7 <<
693 help 239 help
694 This option enables the workaround f !! 240 AlphaServer 1000-based Alpha systems.
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 <<
700 241
701 config ARM_ERRATA_754327 !! 242 config ALPHA_NAUTILUS
702 bool "ARM errata: no automatic Store B !! 243 bool "Nautilus"
703 depends on CPU_V7 && SMP <<
704 help 244 help
705 This option enables the workaround f !! 245 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
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 <<
711 246
712 config ARM_ERRATA_364296 !! 247 config ALPHA_NONAME_CH
713 bool "ARM errata: Possible cache data !! 248 bool "Noname"
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. <<
723 249
724 config ARM_ERRATA_764369 !! 250 config ALPHA_NORITAKE
725 bool "ARM errata: Data cache line main !! 251 bool "Noritake"
726 depends on CPU_V7 && SMP <<
727 help 252 help
728 This option enables the workaround f !! 253 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
729 affecting Cortex-A9 MPCore with two !! 254 systems.
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 <<
737 255
738 config ARM_ERRATA_764319 !! 256 config ALPHA_PC164
739 bool "ARM errata: Read to DBGPRSR and !! 257 bool "PC164"
740 depends on CPU_V7 <<
741 help <<
742 This option enables the workaround f <<
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 <<
748 258
749 config ARM_ERRATA_775420 !! 259 config ALPHA_P2K
750 bool "ARM errata: A data cache maintena !! 260 bool "Platform2000"
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 <<
758 261
759 config ARM_ERRATA_798181 !! 262 config ALPHA_RAWHIDE
760 bool "ARM errata: TLBI/DSB failure on !! 263 bool "Rawhide"
761 depends on CPU_V7 && SMP <<
762 help 264 help
763 On Cortex-A15 (r0p0..r3p2) the TLBI* !! 265 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
764 adequately shooting down all use of !! 266 See HOWTO at
765 option enables the Linux kernel work !! 267 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
766 which sends an IPI to the CPUs that <<
767 as the one being invalidated. <<
768 268
769 config ARM_ERRATA_773022 !! 269 config ALPHA_RUFFIAN
770 bool "ARM errata: incorrect instructio !! 270 bool "Ruffian"
771 depends on CPU_V7 <<
772 help 271 help
773 This option enables the workaround f !! 272 Samsung APC164UX. There is a page on known problems and workarounds
774 (up to r0p4) erratum. In certain rar !! 273 at <http://www.alphalinux.org/faq/FAQ-11.html>.
775 loop buffer may deliver incorrect in <<
776 workaround disables the loop buffer <<
777 274
778 config ARM_ERRATA_818325_852422 !! 275 config ALPHA_RX164
779 bool "ARM errata: A12: some seqs of op !! 276 bool "RX164"
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 <<
791 277
792 config ARM_ERRATA_821420 !! 278 config ALPHA_SX164
793 bool "ARM errata: A12: sequence of VMO !! 279 bool "SX164"
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 <<
801 280
802 config ARM_ERRATA_825619 !! 281 config ALPHA_SABLE
803 bool "ARM errata: A12: DMB NSHST/ISHST !! 282 bool "Sable"
804 depends on CPU_V7 <<
805 help 283 help
806 This option enables the workaround f !! 284 Digital AlphaServer 2000 and 2100-based systems.
807 (all revs) erratum. Within rare timi <<
808 DMB NSHST or DMB ISHST instruction f <<
809 and Device/Strongly-Ordered loads an <<
810 285
811 config ARM_ERRATA_857271 !! 286 config ALPHA_SHARK
812 bool "ARM errata: A12: CPU might deadl !! 287 bool "Shark"
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 <<
818 288
819 config ARM_ERRATA_852421 !! 289 config ALPHA_TAKARA
820 bool "ARM errata: A17: DMB ST might fa !! 290 bool "Takara"
821 depends on CPU_V7 <<
822 help 291 help
823 This option enables the workaround f !! 292 Alpha 11164-based OEM single-board computer.
824 (r1p0, r1p1, r1p2) erratum. Under ve <<
825 execution of a DMB ST instruction mi <<
826 stores from GroupA and stores from G <<
827 293
828 config ARM_ERRATA_852423 !! 294 config ALPHA_TITAN
829 bool "ARM errata: A17: some seqs of op !! 295 bool "Titan"
830 depends on CPU_V7 <<
831 help 296 help
832 This option enables the workaround f !! 297 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
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. <<
839 298
840 config ARM_ERRATA_857272 !! 299 config ALPHA_WILDFIRE
841 bool "ARM errata: A17: CPU might deadl !! 300 bool "Wildfire"
842 depends on CPU_V7 <<
843 help 301 help
844 This option enables the workaround f !! 302 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
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. <<
849 303
850 endmenu !! 304 endchoice
851 <<
852 source "arch/arm/common/Kconfig" <<
853 <<
854 menu "Bus support" <<
855 305
>> 306 # clear all implied options (don't want default values for those):
>> 307 # Most of these machines have ISA slots; not exactly sure which don't,
>> 308 # and this doesn't activate hordes of code, so do it always.
856 config ISA 309 config ISA
857 bool 310 bool
>> 311 default y
858 help 312 help
859 Find out whether you have ISA slots 313 Find out whether you have ISA slots on your motherboard. ISA is the
860 name of a bus system, i.e. the way t 314 name of a bus system, i.e. the way the CPU talks to the other stuff
861 inside your box. Other bus systems 315 inside your box. Other bus systems are PCI, EISA, MicroChannel
862 (MCA) or VESA. ISA is an older syst 316 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
863 newer boards don't support it. If y 317 newer boards don't support it. If you have ISA, say Y, otherwise N.
864 318
865 # Select ISA DMA interface <<
866 config ISA_DMA_API 319 config ISA_DMA_API
867 bool 320 bool
>> 321 default y
868 322
869 config ARM_ERRATA_814220 !! 323 config PCI
870 bool "ARM errata: Cache maintenance by <<
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 <<
881 endmenu <<
882 <<
883 menu "Kernel Features" <<
884 <<
885 config HAVE_SMP <<
886 bool 324 bool
>> 325 depends on !ALPHA_JENSEN
>> 326 default y
887 help 327 help
888 This option should be selected by ma !! 328 Find out whether you have a PCI motherboard. PCI is the name of a
889 capable CPU. !! 329 bus system, i.e. the way the CPU talks to the other stuff inside
890 !! 330 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
891 The only effect of this option is to !! 331 VESA. If you have PCI, say Y, otherwise N.
892 options available to the user for co <<
893 <<
894 config SMP <<
895 bool "Symmetric Multi-Processing" <<
896 depends on CPU_V6K || CPU_V7 <<
897 depends on HAVE_SMP <<
898 depends on MMU || ARM_MPU <<
899 select IRQ_WORK <<
900 help <<
901 This enables support for systems wit <<
902 a system with only one CPU, say N. I <<
903 than one CPU, say Y. <<
904 332
905 If you say N here, the kernel will r !! 333 config PCI_DOMAINS
906 machines, but will use only one CPU !! 334 bool
907 you say Y here, the kernel will run !! 335 default y
908 uniprocessor machines. On a uniproce <<
909 will run faster if you say N here. <<
910 336
911 See also <file:Documentation/arch/x8 !! 337 config PCI_SYSCALL
912 <file:Documentation/admin-guide/lock !! 338 def_bool PCI
913 <http://tldp.org/HOWTO/SMP-HOWTO.htm <<
914 339
915 If you don't know what to do here, s !! 340 config IOMMU_HELPER
>> 341 def_bool PCI
916 342
917 config SMP_ON_UP !! 343 config ALPHA_NONAME
918 bool "Allow booting SMP kernel on unip !! 344 bool
919 depends on SMP && MMU !! 345 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
920 default y 346 default y
921 help 347 help
922 SMP kernels contain instructions whi !! 348 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
923 Enabling this option allows the kern !! 349 UDB). This design was produced by Digital's Technical OEM (TOEM)
924 these instructions safe. Disabling !! 350 group. It uses the 21066 processor running at 166MHz or 233MHz. It
925 savings. !! 351 is a baby-AT size, and runs from a standard PC power supply. It has
926 !! 352 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
927 If you don't know what to do here, s !! 353 2 versions, with either PS/2 or large DIN connectors for the
928 !! 354 keyboard.
929 <<
930 config CURRENT_POINTER_IN_TPIDRURO <<
931 def_bool y <<
932 depends on CPU_32v6K && !CPU_V6 <<
933 355
934 config IRQSTACKS !! 356 config ALPHA_EV4
935 def_bool y !! 357 bool
936 select HAVE_IRQ_EXIT_ON_IRQ_STACK !! 358 depends on ALPHA_JENSEN || (ALPHA_SABLE && !ALPHA_GAMMA) || ALPHA_LYNX || ALPHA_NORITAKE && !ALPHA_PRIMO || ALPHA_MIKASA && !ALPHA_PRIMO || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL || ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
937 select HAVE_SOFTIRQ_ON_OWN_STACK !! 359 default y if !ALPHA_LYNX
938 360
939 config ARM_CPU_TOPOLOGY !! 361 config ALPHA_LCA
940 bool "Support cpu topology definition" !! 362 bool
941 depends on SMP && CPU_V7 !! 363 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
942 default y 364 default y
943 help <<
944 Support ARM cpu topology definition. <<
945 affinity between processors which is <<
946 topology of an ARM System. <<
947 365
948 config SCHED_MC !! 366 config ALPHA_APECS
949 bool "Multi-core scheduler support" !! 367 bool
950 depends on ARM_CPU_TOPOLOGY !! 368 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
951 help !! 369 default y
952 Multi-core scheduler support improve <<
953 making when dealing with multi-core <<
954 increased overhead in some places. I <<
955 <<
956 config SCHED_SMT <<
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. <<
963 370
964 config HAVE_ARM_SCU !! 371 config ALPHA_EB64P
965 bool 372 bool
>> 373 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
>> 374 default y
966 help 375 help
967 This option enables support for the !! 376 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
>> 377 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
>> 378 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
>> 379 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
>> 380 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
>> 381 Runs from standard PC power supply.
968 382
969 config HAVE_ARM_ARCH_TIMER !! 383 config ALPHA_EV5
970 bool "Architected timer support" !! 384 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
971 depends on CPU_V7 !! 385 default y if ALPHA_RX164 || ALPHA_RAWHIDE || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_SABLE && ALPHA_GAMMA || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
972 select ARM_ARCH_TIMER <<
973 help <<
974 This option enables support for the <<
975 386
976 config HAVE_ARM_TWD !! 387 config ALPHA_EV4
977 bool 388 bool
978 help !! 389 default y if ALPHA_LYNX && !ALPHA_EV5
979 This options enables support for the <<
980 <<
981 config MCPM <<
982 bool "Multi-Cluster Power Management" <<
983 depends on CPU_V7 && SMP <<
984 help <<
985 This option provides the common powe <<
986 for (multi-)cluster based systems, s <<
987 systems. <<
988 390
989 config MCPM_QUAD_CLUSTER !! 391 config ALPHA_CIA
990 bool 392 bool
991 depends on MCPM !! 393 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
992 help !! 394 default y
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 <<
1006 config BL_SWITCHER <<
1007 bool "big.LITTLE switcher support" <<
1008 depends on BIG_LITTLE && MCPM && HOTP <<
1009 select CPU_PM <<
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 395
1023 choice !! 396 config ALPHA_EV56
1024 prompt "Memory split" !! 397 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
1025 depends on MMU !! 398 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
1026 default VMSPLIT_3G <<
1027 help <<
1028 Select the desired split between ke <<
1029 <<
1030 If you are not absolutely sure what <<
1031 option alone! <<
1032 <<
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 <<
1043 399
1044 config PAGE_OFFSET !! 400 config ALPHA_EV56
1045 hex !! 401 prompt "EV56 CPU (speed >= 333MHz)?"
1046 default PHYS_OFFSET if !MMU !! 402 depends on ALPHA_NORITAKE || ALPHA_PRIMO
1047 default 0x40000000 if VMSPLIT_1G <<
1048 default 0x80000000 if VMSPLIT_2G <<
1049 default 0xB0000000 if VMSPLIT_3G_OPT <<
1050 default 0xC0000000 <<
1051 <<
1052 config KASAN_SHADOW_OFFSET <<
1053 hex <<
1054 depends on KASAN <<
1055 default 0x1f000000 if PAGE_OFFSET=0x4 <<
1056 default 0x5f000000 if PAGE_OFFSET=0x8 <<
1057 default 0x9f000000 if PAGE_OFFSET=0xC <<
1058 default 0x8f000000 if PAGE_OFFSET=0xB <<
1059 default 0xffffffff <<
1060 403
1061 config NR_CPUS !! 404 config ALPHA_EV56
1062 int "Maximum number of CPUs (2-32)" !! 405 prompt "EV56 CPU (speed >= 400MHz)?"
1063 range 2 16 if DEBUG_KMAP_LOCAL !! 406 depends on ALPHA_RAWHIDE
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 407
1073 config HOTPLUG_CPU !! 408 config ALPHA_PRIMO
1074 bool "Support for hot-pluggable CPUs" !! 409 bool "EV5 CPU daughtercard (model 5/xxx)?"
1075 depends on SMP !! 410 depends on ALPHA_NORITAKE || ALPHA_MIKASA
1076 select GENERIC_IRQ_MIGRATION <<
1077 help 411 help
1078 Say Y here to experiment with turni !! 412 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
1079 can be controlled through /sys/devi <<
1080 <<
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 <<
1097 choice <<
1098 depends on HZ_FIXED = 0 <<
1099 prompt "Timer frequency" <<
1100 <<
1101 config HZ_100 <<
1102 bool "100 Hz" <<
1103 <<
1104 config HZ_200 <<
1105 bool "200 Hz" <<
1106 <<
1107 config HZ_250 <<
1108 bool "250 Hz" <<
1109 <<
1110 config HZ_300 <<
1111 bool "300 Hz" <<
1112 <<
1113 config HZ_500 <<
1114 bool "500 Hz" <<
1115 <<
1116 config HZ_1000 <<
1117 bool "1000 Hz" <<
1118 413
1119 endchoice !! 414 config ALPHA_GAMMA
1120 !! 415 bool "EV5 CPU(s) (model 5/xxx)?"
1121 config HZ !! 416 depends on ALPHA_SABLE
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 417 help
1140 By enabling this option, the kernel !! 418 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
1141 Thumb-2 mode. <<
1142 <<
1143 If unsure, say N. <<
1144 <<
1145 config ARM_PATCH_IDIV <<
1146 bool "Runtime patch udiv/sdiv instruc <<
1147 depends on CPU_32v7 <<
1148 default y <<
1149 help <<
1150 The ARM compiler inserts calls to _ <<
1151 __aeabi_uidiv() when it needs to pe <<
1152 and unsigned integers. Some v7 CPUs <<
1153 and udiv instructions that can be u <<
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 419
1204 config ARCH_FLATMEM_ENABLE !! 420 config ALPHA_GAMMA
1205 def_bool !(ARCH_RPC || ARCH_SA1100) !! 421 bool
>> 422 depends on ALPHA_LYNX
>> 423 default y
1206 424
1207 config ARCH_SPARSEMEM_ENABLE !! 425 config ALPHA_T2
1208 def_bool !ARCH_FOOTBRIDGE !! 426 bool
1209 select SPARSEMEM_STATIC if SPARSEMEM !! 427 depends on ALPHA_SABLE || ALPHA_LYNX
1210 !! 428 default y
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 <<
1245 help <<
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 429
1252 The implementation uses CPU domains !! 430 config ALPHA_PYXIS
1253 disabling of TTBR0 page table walks !! 431 bool
>> 432 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
>> 433 default y
1254 434
1255 config CPU_SW_DOMAIN_PAN !! 435 config ALPHA_EV6
1256 def_bool y !! 436 bool
1257 depends on ARM_PAN && !ARM_LPAE !! 437 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
1258 help !! 438 default y
1259 Enable use of CPU domains to implem <<
1260 439
1261 CPUs with low-vector mappings use a !! 440 config ALPHA_TSUNAMI
1262 Their lower 1MB needs to remain acc !! 441 bool
1263 the remainder of userspace will bec !! 442 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
>> 443 default y
1264 444
1265 config CPU_TTBR0_PAN !! 445 config ALPHA_EV67
1266 def_bool y !! 446 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
1267 depends on ARM_PAN && ARM_LPAE !! 447 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
1268 help 448 help
1269 Enable privileged no-access by disa !! 449 Is this a machine based on the EV67 core? If in doubt, select N here
1270 running in kernel mode. !! 450 and the machine will be treated as an EV6.
1271 <<
1272 config HW_PERF_EVENTS <<
1273 def_bool y <<
1274 depends on ARM_PMU <<
1275 <<
1276 config ARM_MODULE_PLTS <<
1277 bool "Use PLTs to allow module memory <<
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 <<
1334 However, if the CPU data cache is u <<
1335 this option is unlikely to provide <<
1336 <<
1337 config PARAVIRT <<
1338 bool "Enable paravirtualization code" <<
1339 help <<
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 <<
1353 If in doubt, say N here. <<
1354 451
1355 config XEN_DOM0 !! 452 config ALPHA_EV7
1356 def_bool y !! 453 bool
1357 depends on XEN !! 454 depends on ALPHA_MARVEL
1358 !! 455 default y
1359 config XEN <<
1360 bool "Xen guest support on ARM" <<
1361 depends on ARM && AEABI && OF <<
1362 depends on CPU_V7 && !CPU_V6 <<
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 <<
1371 Say Y if you want to run Linux in a <<
1372 <<
1373 config CC_HAVE_STACKPROTECTOR_TLS <<
1374 def_bool $(cc-option,-mtp=cp15 -mstac <<
1375 <<
1376 config STACKPROTECTOR_PER_TASK <<
1377 bool "Use a unique stack canary value <<
1378 depends on STACKPROTECTOR && CURRENT_ <<
1379 depends on GCC_PLUGINS || CC_HAVE_STA <<
1380 select GCC_PLUGIN_ARM_SSP_PER_TASK if <<
1381 default y <<
1382 help <<
1383 Due to the fact that GCC uses an or <<
1384 which to load the value of the stac <<
1385 change at reboot time on SMP system <<
1386 kernel's address space are forced t <<
1387 the entire duration that the system <<
1388 <<
1389 Enable this option to switch to a d <<
1390 different canary value for each tas <<
1391 456
1392 endmenu !! 457 config ALPHA_MCPCIA
>> 458 bool
>> 459 depends on ALPHA_RAWHIDE
>> 460 default y
1393 461
1394 menu "Boot options" !! 462 config ALPHA_POLARIS
>> 463 bool
>> 464 depends on ALPHA_RX164
>> 465 default y
1395 466
1396 config USE_OF !! 467 config ALPHA_IRONGATE
1397 bool "Flattened Device Tree support" !! 468 bool
1398 select IRQ_DOMAIN !! 469 depends on ALPHA_NAUTILUS
1399 select OF !! 470 default y
1400 help <<
1401 Include support for flattened devic <<
1402 471
1403 config ARCH_WANT_FLAT_DTB_INSTALL !! 472 config GENERIC_HWEIGHT
1404 def_bool y !! 473 bool
>> 474 default y if !ALPHA_EV67
1405 475
1406 config ATAGS !! 476 config ALPHA_AVANTI
1407 bool "Support for the traditional ATA !! 477 bool
>> 478 depends on ALPHA_XL || ALPHA_AVANTI_CH
1408 default y 479 default y
1409 help 480 help
1410 This is the traditional way of pass !! 481 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
1411 time. If you are solely relying on !! 482 Alphas. Info at
1412 the ARM_ATAG_DTB_COMPAT option) the !! 483 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
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 <<
1422 # Compressed boot loader in ROM. Yes, we rea <<
1423 # TEXT and BSS so we preserve their values in <<
1424 config ZBOOT_ROM_TEXT <<
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 <<
1456 config ARM_APPENDED_DTB <<
1457 bool "Use appended device tree blob t <<
1458 depends on OF <<
1459 help <<
1460 With this option, the boot code wil <<
1461 (DTB) appended to zImage <<
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 484
1488 choice !! 485 config ALPHA_BROKEN_IRQ_MASK
1489 prompt "Kernel command line type" !! 486 bool
1490 depends on ARM_ATAG_DTB_COMPAT !! 487 depends on ALPHA_GENERIC || ALPHA_PC164
1491 default ARM_ATAG_DTB_COMPAT_CMDLINE_F !! 488 default y
1492 <<
1493 config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTL <<
1494 bool "Use bootloader kernel arguments <<
1495 help <<
1496 Uses the command-line options passe <<
1497 the device tree bootargs property. <<
1498 any, the device tree bootargs prope <<
1499 489
1500 config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND !! 490 config VGA_HOSE
1501 bool "Extend with bootloader kernel a !! 491 bool
>> 492 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
>> 493 default y
1502 help 494 help
1503 The command-line arguments provided !! 495 Support VGA on an arbitrary hose; needed for several platforms
1504 appended to the the device tree boo !! 496 which always have multiple hoses, and whose consoles support it.
1505 497
1506 endchoice <<
1507 <<
1508 config CMDLINE <<
1509 string "Default kernel command string <<
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 498
1518 choice !! 499 config ALPHA_SRM
1519 prompt "Kernel command line type" !! 500 bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME
1520 depends on CMDLINE != "" !! 501 default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
1521 default CMDLINE_FROM_BOOTLOADER !! 502 ---help---
1522 !! 503 There are two different types of booting firmware on Alphas: SRM,
1523 config CMDLINE_FROM_BOOTLOADER !! 504 which is command line driven, and ARC, which uses menus and arrow
1524 bool "Use bootloader kernel arguments !! 505 keys. Details about the Linux/Alpha booting process are contained in
1525 help !! 506 the Linux/Alpha FAQ, accessible on the WWW from
1526 Uses the command-line options passe !! 507 <http://www.alphalinux.org/>.
1527 the boot loader doesn't provide any <<
1528 string provided in CMDLINE will be <<
1529 <<
1530 config CMDLINE_EXTEND <<
1531 bool "Extend bootloader kernel argume <<
1532 help <<
1533 The command-line arguments provided <<
1534 appended to the default kernel comm <<
1535 <<
1536 config CMDLINE_FORCE <<
1537 bool "Always use the default kernel c <<
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 508
1545 config XIP_KERNEL !! 509 The usual way to load Linux on an Alpha machine is to use MILO
1546 bool "Kernel Execute-In-Place from RO !! 510 (a bootloader that lets you pass command line parameters to the
1547 depends on !ARM_LPAE && !ARCH_MULTIPL !! 511 kernel just like lilo does for the x86 architecture) which can be
1548 depends on !ARM_PATCH_IDIV && !ARM_PA !! 512 loaded either from ARC or can be installed directly as a permanent
1549 help !! 513 firmware replacement from floppy (which requires changing a certain
1550 Execute-In-Place allows the kernel !! 514 jumper on the motherboard). If you want to do either of these, say N
1551 directly addressable by the CPU, su !! 515 here. If MILO doesn't work on your system (true for Jensen
1552 space since the text section of the !! 516 motherboards), you can bypass it altogether and boot Linux directly
1553 to RAM. Read-write sections, such !! 517 from an SRM console; say Y here in order to do that. Note that you
1554 are still copied to RAM. The XIP k !! 518 won't be able to boot from an IDE disk using SRM.
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 519
1565 If unsure, say N. 520 If unsure, say N.
1566 521
1567 config XIP_PHYS_ADDR !! 522 config EISA
1568 hex "XIP Kernel Physical Location" !! 523 bool
1569 depends on XIP_KERNEL !! 524 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
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 525 default y
1594 help <<
1595 Should the atags used to boot the k <<
1596 file in procfs. Useful with kexec. <<
1597 526
1598 config ARCH_SUPPORTS_CRASH_DUMP !! 527 config ARCH_MAY_HAVE_PC_FDC
1599 def_bool y 528 def_bool y
1600 529
1601 config AUTO_ZRELADDR !! 530 config SMP
1602 bool "Auto calculation of the decompr !! 531 bool "Symmetric multi-processing support"
1603 default !(ARCH_FOOTBRIDGE || ARCH_RPC !! 532 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
1604 help !! 533 select USE_GENERIC_SMP_HELPERS
1605 ZRELADDR is the physical address wh !! 534 ---help---
1606 image will be placed. If AUTO_ZRELA !! 535 This enables support for systems with more than one CPU. If you have
1607 will be determined at run-time, eit !! 536 a system with only one CPU, like most personal computers, say N. If
1608 with 0xf8000000, or, if invalid, fr !! 537 you have a system with more than one CPU, say Y.
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 <<
1635 help <<
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 <<
1648 endmenu <<
1649 <<
1650 menu "CPU Power Management" <<
1651 538
1652 source "drivers/cpufreq/Kconfig" !! 539 If you say N here, the kernel will run on single and multiprocessor
>> 540 machines, but will use only one CPU of a multiprocessor machine. If
>> 541 you say Y here, the kernel will run on many, but not all,
>> 542 singleprocessor machines. On a singleprocessor machine, the kernel
>> 543 will run faster if you say N here.
1653 544
1654 source "drivers/cpuidle/Kconfig" !! 545 See also the SMP-HOWTO available at
>> 546 <http://www.tldp.org/docs.html#howto>.
1655 547
1656 endmenu !! 548 If you don't know what to do here, say N.
1657 549
1658 menu "Floating point emulation" !! 550 config HAVE_DEC_LOCK
>> 551 bool
>> 552 depends on SMP
>> 553 default y
1659 554
1660 comment "At least one emulation must be selec !! 555 config NR_CPUS
>> 556 int "Maximum number of CPUs (2-32)"
>> 557 range 2 32
>> 558 depends on SMP
>> 559 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
>> 560 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
>> 561 help
>> 562 MARVEL support can handle a maximum of 32 CPUs, all the others
>> 563 with working support have a maximum of 4 CPUs.
1661 564
1662 config FPE_NWFPE !! 565 config ARCH_DISCONTIGMEM_ENABLE
1663 bool "NWFPE math emulation" !! 566 bool "Discontiguous Memory Support (EXPERIMENTAL)"
1664 depends on (!AEABI || OABI_COMPAT) && !! 567 depends on EXPERIMENTAL
1665 help 568 help
1666 Say Y to include the NWFPE floating !! 569 Say Y to support efficient handling of discontiguous physical memory,
1667 This is necessary to run most binar !! 570 for architectures which are either NUMA (Non-Uniform Memory Access)
1668 support floating point hardware so !! 571 or have huge holes in the physical address space for other reasons.
1669 your machine has an FPA or floating !! 572 See <file:Documentation/vm/numa> for more.
1670 573
1671 You may say N here if you are going !! 574 source "mm/Kconfig"
1672 early in the bootup. <<
1673 575
1674 config FPE_NWFPE_XP !! 576 config NUMA
1675 bool "Support extended precision" !! 577 bool "NUMA Support (EXPERIMENTAL)"
1676 depends on FPE_NWFPE !! 578 depends on DISCONTIGMEM && BROKEN
1677 help 579 help
1678 Say Y to include 80-bit support in !! 580 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1679 emulator. Otherwise, only 32 and 6 !! 581 Access). This option is for configuring high-end multiprocessor
1680 Note that gcc does not generate 80- !! 582 server machines. If in doubt, say N.
1681 so in most cases this option only e <<
1682 floating point emulator without any <<
1683 583
1684 You almost surely want to say N her !! 584 config NODES_SHIFT
>> 585 int
>> 586 default "7"
>> 587 depends on NEED_MULTIPLE_NODES
1685 588
1686 config FPE_FASTFPE !! 589 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
1687 bool "FastFPE math emulation (EXPERIM !! 590 config ALPHA_LARGE_VMALLOC
1688 depends on (!AEABI || OABI_COMPAT) && !! 591 bool
1689 help !! 592 ---help---
1690 Say Y here to include the FAST floa !! 593 Process creation and other aspects of virtual memory management can
1691 This is an experimental much faster !! 594 be streamlined if we restrict the kernel to one PGD for all vmalloc
1692 precision for the mantissa. It doe !! 595 allocations. This equates to about 8GB.
1693 It is very simple, and approximatel !! 596
>> 597 Under normal circumstances, this is so far and above what is needed
>> 598 as to be laughable. However, there are certain applications (such
>> 599 as benchmark-grade in-kernel web serving) that can make use of as
>> 600 much vmalloc space as is available.
>> 601
>> 602 Say N unless you know you need gobs and gobs of vmalloc space.
>> 603
>> 604 config VERBOSE_MCHECK
>> 605 bool "Verbose Machine Checks"
>> 606
>> 607 config VERBOSE_MCHECK_ON
>> 608 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
>> 609 depends on VERBOSE_MCHECK
>> 610 default 1
>> 611 ---help---
>> 612 This option allows the default printing mode to be set, and then
>> 613 possibly overridden by a boot command argument.
>> 614
>> 615 For example, if one wanted the option of printing verbose
>> 616 machine checks, but wanted the default to be as if verbose
>> 617 machine check printing was turned off, then one would choose
>> 618 the printing mode to be 0. Then, upon reboot, one could add
>> 619 the boot command line "verbose_mcheck=1" to get the normal
>> 620 verbose machine check printing, or "verbose_mcheck=2" to get
>> 621 the maximum information available.
1694 622
1695 It should be sufficient for most pr !! 623 Take the default (1) unless you want more control or more info.
1696 for scientific calculations, but yo <<
1697 If you do not feel you need a faste <<
1698 choose NWFPE. <<
1699 624
1700 config VFP !! 625 config HZ
1701 bool "VFP-format floating point maths !! 626 int
1702 depends on CPU_V6 || CPU_V6K || CPU_A !! 627 default 1200 if ALPHA_RAWHIDE
1703 help !! 628 default 1024
1704 Say Y to include VFP support code i <<
1705 if your hardware includes a VFP uni <<
1706 629
1707 Please see <file:Documentation/arch !! 630 source "drivers/pci/Kconfig"
1708 release notes and additional status !! 631 source "drivers/eisa/Kconfig"
1709 632
1710 Say N if your target does not have !! 633 source "drivers/pcmcia/Kconfig"
1711 634
1712 config VFPv3 !! 635 config SRM_ENV
1713 bool !! 636 tristate "SRM environment through procfs"
1714 depends on VFP !! 637 depends on PROC_FS
1715 default y if CPU_V7 !! 638 ---help---
>> 639 If you enable this option, a subdirectory inside /proc called
>> 640 /proc/srm_environment will give you access to the all important
>> 641 SRM environment variables (those which have a name) and also
>> 642 to all others (by their internal number).
>> 643
>> 644 SRM is something like a BIOS for Alpha machines. There are some
>> 645 other such BIOSes, like AlphaBIOS, which this driver cannot
>> 646 support (hey, that's not SRM!).
>> 647
>> 648 Despite the fact that this driver doesn't work on all Alphas (but
>> 649 only on those which have SRM as their firmware), it's save to
>> 650 build it even if your particular machine doesn't know about SRM
>> 651 (or if you intend to compile a generic kernel). It will simply
>> 652 not create those subdirectory in /proc (and give you some warning,
>> 653 of course).
1716 654
1717 config NEON !! 655 This driver is also available as a module and will be called
1718 bool "Advanced SIMD (NEON) Extension !! 656 srm_env then.
1719 depends on VFPv3 && CPU_V7 <<
1720 help <<
1721 Say Y to include support code for N <<
1722 Extension. <<
1723 657
1724 config KERNEL_MODE_NEON !! 658 source "fs/Kconfig.binfmt"
1725 bool "Support for NEON in kernel mode <<
1726 depends on NEON && AEABI <<
1727 help <<
1728 Say Y to include support for NEON i <<
1729 659
1730 endmenu 660 endmenu
1731 661
1732 menu "Power management options" !! 662 source "net/Kconfig"
1733 663
1734 source "kernel/power/Kconfig" !! 664 source "drivers/Kconfig"
1735 665
1736 config ARCH_SUSPEND_POSSIBLE !! 666 source "fs/Kconfig"
1737 depends on CPU_ARM920T || CPU_ARM926T <<
1738 CPU_V6 || CPU_V6K || CPU_V7 | <<
1739 def_bool y <<
1740 667
1741 config ARM_CPU_SUSPEND !! 668 source "arch/alpha/Kconfig.debug"
1742 def_bool PM_SLEEP || BL_SWITCHER || A <<
1743 depends on ARCH_SUSPEND_POSSIBLE <<
1744 669
1745 config ARCH_HIBERNATION_POSSIBLE !! 670 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
>> 671 # but we also need it if VGA_HOSE is set
>> 672 config DUMMY_CONSOLE
1746 bool 673 bool
1747 depends on MMU !! 674 depends on VGA_HOSE
1748 default y if ARCH_SUSPEND_POSSIBLE !! 675 default y
1749 676
1750 endmenu !! 677 source "security/Kconfig"
>> 678
>> 679 source "crypto/Kconfig"
>> 680
>> 681 source "lib/Kconfig"
1751 682
1752 source "arch/arm/Kconfig.assembler" <<
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