1 # SPDX-License-Identifier: GPL-2.0 !! 1 # SPDX-License-Identifier: GPL-2.0-only
2 config ARM !! 2 config 64BIT
>> 3 bool "64-bit kernel" if "$(ARCH)" = "sparc"
>> 4 default "$(ARCH)" = "sparc64"
>> 5 help
>> 6 SPARC is a family of RISC microprocessors designed and marketed by
>> 7 Sun Microsystems, incorporated. They are very widely found in Sun
>> 8 workstations and clones.
>> 9
>> 10 Say yes to build a 64-bit kernel - formerly known as sparc64
>> 11 Say no to build a 32-bit kernel - formerly known as sparc
>> 12
>> 13 config SPARC
3 bool 14 bool
4 default y 15 default y
5 select ARCH_32BIT_OFF_T !! 16 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
6 select ARCH_CORRECT_STACKTRACE_ON_KRET !! 17 select ARCH_MIGHT_HAVE_PC_SERIO
7 select ARCH_HAS_BINFMT_FLAT !! 18 select DMA_OPS
8 select ARCH_HAS_CPU_CACHE_ALIASING !! 19 select OF
9 select ARCH_HAS_CPU_FINALIZE_INIT if M !! 20 select OF_PROMTREE
10 select ARCH_HAS_CURRENT_STACK_POINTER !! 21 select HAVE_ASM_MODVERSIONS
11 select ARCH_HAS_DEBUG_VIRTUAL if MMU !! 22 select HAVE_ARCH_KGDB if !SMP || SPARC64
12 select ARCH_HAS_DMA_ALLOC if MMU !! 23 select HAVE_ARCH_TRACEHOOK
13 select ARCH_HAS_DMA_OPS !! 24 select HAVE_ARCH_SECCOMP if SPARC64
14 select ARCH_HAS_DMA_WRITE_COMBINE if ! !! 25 select HAVE_EXIT_THREAD
15 select ARCH_HAS_ELF_RANDOMIZE !! 26 select HAVE_PCI
16 select ARCH_HAS_FORTIFY_SOURCE !! 27 select SYSCTL_EXCEPTION_TRACE
17 select ARCH_HAS_KEEPINITRD !! 28 select RTC_CLASS
18 select ARCH_HAS_KCOV !! 29 select RTC_DRV_M48T59
19 select ARCH_HAS_MEMBARRIER_SYNC_CORE !! 30 select RTC_SYSTOHC
20 select ARCH_HAS_NON_OVERLAPPING_ADDRES !! 31 select HAVE_ARCH_JUMP_LABEL if SPARC64
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 32 select GENERIC_IRQ_SHOW
73 select GENERIC_IRQ_SHOW_LEVEL !! 33 select ARCH_WANT_IPC_PARSE_VERSION
74 select GENERIC_LIB_DEVMEM_IS_ALLOWED <<
75 select GENERIC_PCI_IOMAP 34 select GENERIC_PCI_IOMAP
76 select GENERIC_SCHED_CLOCK !! 35 select HAVE_NMI_WATCHDOG if SPARC64
>> 36 select HAVE_CBPF_JIT if SPARC32
>> 37 select HAVE_EBPF_JIT if SPARC64
>> 38 select HAVE_DEBUG_BUGVERBOSE
77 select GENERIC_SMP_IDLE_THREAD 39 select GENERIC_SMP_IDLE_THREAD
78 select HARDIRQS_SW_RESEND !! 40 select MODULES_USE_ELF_RELA
79 select HAS_IOPORT !! 41 select PCI_SYSCALL if PCI
80 select HAVE_ARCH_AUDITSYSCALL if AEABI !! 42 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
81 select HAVE_ARCH_BITREVERSE if (CPU_32 !! 43 select ODD_RT_SIGACTION
82 select HAVE_ARCH_JUMP_LABEL if !XIP_KE !! 44 select OLD_SIGSUSPEND
83 select HAVE_ARCH_KFENCE if MMU && !XIP !! 45 select CPU_NO_EFFICIENT_FFS
84 select HAVE_ARCH_KGDB if !CPU_ENDIAN_B !! 46 select LOCKDEP_SMALL if LOCKDEP
85 select HAVE_ARCH_KASAN if MMU && !XIP_ !! 47 select NEED_DMA_MAP_STATE
86 select HAVE_ARCH_KASAN_VMALLOC if HAVE !! 48 select NEED_SG_DMA_LENGTH
87 select HAVE_ARCH_MMAP_RND_BITS if MMU !! 49 select TRACE_IRQFLAGS_SUPPORT
88 select HAVE_ARCH_PFN_VALID !! 50
89 select HAVE_ARCH_SECCOMP !! 51 config SPARC32
90 select HAVE_ARCH_SECCOMP_FILTER if AEA !! 52 def_bool !64BIT
91 select HAVE_ARCH_STACKLEAK !! 53 select ARCH_32BIT_OFF_T
92 select HAVE_ARCH_THREAD_STRUCT_WHITELI !! 54 select ARCH_HAS_SYNC_DMA_FOR_CPU
93 select HAVE_ARCH_TRACEHOOK !! 55 select CLZ_TAB
94 select HAVE_ARCH_TRANSPARENT_HUGEPAGE !! 56 select DMA_DIRECT_REMAP
95 select HAVE_ARM_SMCCC if CPU_V7 !! 57 select GENERIC_ATOMIC64
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 58 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 59 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 60 select OLD_SIGACTION
144 select OLD_SIGSUSPEND3 !! 61 select ZONE_DMA
145 select PCI_DOMAINS_GENERIC if PCI !! 62
146 select PCI_SYSCALL if PCI !! 63 config SPARC64
>> 64 def_bool 64BIT
>> 65 select ALTERNATE_USER_ADDRESS_SPACE
>> 66 select HAVE_FUNCTION_TRACER
>> 67 select HAVE_FUNCTION_GRAPH_TRACER
>> 68 select HAVE_KRETPROBES
>> 69 select HAVE_KPROBES
>> 70 select MMU_GATHER_RCU_TABLE_FREE if SMP
>> 71 select MMU_GATHER_MERGE_VMAS
>> 72 select MMU_GATHER_NO_FLUSH_CACHE
>> 73 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
>> 74 select HAVE_DYNAMIC_FTRACE
>> 75 select HAVE_FTRACE_MCOUNT_RECORD
>> 76 select HAVE_SYSCALL_TRACEPOINTS
>> 77 select HAVE_CONTEXT_TRACKING_USER
>> 78 select HAVE_TIF_NOHZ
>> 79 select HAVE_DEBUG_KMEMLEAK
>> 80 select IOMMU_HELPER
>> 81 select SPARSE_IRQ
>> 82 select RTC_DRV_CMOS
>> 83 select RTC_DRV_BQ4802
>> 84 select RTC_DRV_SUN4V
>> 85 select RTC_DRV_STARFIRE
>> 86 select HAVE_PERF_EVENTS
147 select PERF_USE_VMALLOC 87 select PERF_USE_VMALLOC
148 select RTC_LIB !! 88 select ARCH_HAVE_NMI_SAFE_CMPXCHG
149 select SPARSE_IRQ if !(ARCH_FOOTBRIDGE !! 89 select HAVE_C_RECORDMCOUNT
150 select SYS_SUPPORTS_APM_EMULATION !! 90 select HAVE_ARCH_AUDITSYSCALL
151 select THREAD_INFO_IN_TASK !! 91 select ARCH_SUPPORTS_ATOMIC_RMW
152 select TIMER_OF if OF !! 92 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
153 select HAVE_ARCH_VMAP_STACK if MMU && !! 93 select HAVE_NMI
154 select TRACE_IRQFLAGS_SUPPORT if !CPU_ !! 94 select HAVE_REGS_AND_STACK_ACCESS_API
155 select USE_OF if !(ARCH_FOOTBRIDGE || !! 95 select ARCH_USE_QUEUED_RWLOCKS
156 # Above selects are sorted alphabetica !! 96 select ARCH_USE_QUEUED_SPINLOCKS
157 # according to that. Thanks. !! 97 select GENERIC_TIME_VSYSCALL
158 help !! 98 select ARCH_CLOCKSOURCE_DATA
159 The ARM series is a line of low-powe !! 99 select ARCH_HAS_PTE_SPECIAL
160 licensed by ARM Ltd and targeted at !! 100 select PCI_DOMAINS if PCI
161 handhelds such as the Compaq IPAQ. !! 101 select ARCH_HAS_GIGANTIC_PAGE
162 manufactured, but legacy ARM-based P !! 102 select HAVE_SOFTIRQ_ON_OWN_STACK
163 Europe. There is an ARM Linux proje !! 103 select HAVE_SETUP_PER_CPU_AREA
164 <http://www.arm.linux.org.uk/>. !! 104 select NEED_PER_CPU_EMBED_FIRST_CHUNK
>> 105 select NEED_PER_CPU_PAGE_FIRST_CHUNK
165 106
166 config ARM_HAS_GROUP_RELOCS !! 107 config ARCH_PROC_KCORE_TEXT
167 def_bool y 108 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 <<
180 109
181 if ARM_DMA_USE_IOMMU !! 110 config CPU_BIG_ENDIAN
182 !! 111 def_bool y
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 <<
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 <<
214 112
215 config SBUS !! 113 config ARCH_ATU
216 bool 114 bool
>> 115 default y if SPARC64
217 116
218 config STACKTRACE_SUPPORT 117 config STACKTRACE_SUPPORT
219 bool 118 bool
220 default y !! 119 default y if SPARC64
221 120
222 config LOCKDEP_SUPPORT 121 config LOCKDEP_SUPPORT
223 bool 122 bool
224 default y !! 123 default y if SPARC64
225 <<
226 config ARCH_HAS_ILOG2_U32 <<
227 bool <<
228 <<
229 config ARCH_HAS_ILOG2_U64 <<
230 bool <<
231 <<
232 config ARCH_HAS_BANDGAP <<
233 bool <<
234 124
235 config FIX_EARLYCON_MEM !! 125 config ARCH_HIBERNATION_POSSIBLE
236 def_bool y if MMU !! 126 def_bool y if SPARC64
237 127
238 config GENERIC_HWEIGHT !! 128 config AUDIT_ARCH
239 bool 129 bool
240 default y 130 default y
241 131
242 config GENERIC_CALIBRATE_DELAY !! 132 config MMU
243 bool 133 bool
244 default y 134 default y
245 135
246 config ARCH_MAY_HAVE_PC_FDC !! 136 config HIGHMEM
247 bool 137 bool
248 !! 138 default y if SPARC32
249 config ARCH_SUPPORTS_UPROBES !! 139 select KMAP_LOCAL
250 def_bool y <<
251 140
252 config GENERIC_ISA_DMA 141 config GENERIC_ISA_DMA
253 bool 142 bool
254 !! 143 default y if SPARC32
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 <<
277 config NEED_MACH_IO_H <<
278 bool <<
279 help <<
280 Select this when mach/io.h is requir <<
281 definitions for this platform. The <<
282 be avoided when possible. <<
283 <<
284 config NEED_MACH_MEMORY_H <<
285 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 <<
307 144
308 config PGTABLE_LEVELS 145 config PGTABLE_LEVELS
309 int !! 146 default 4 if 64BIT
310 default 3 if ARM_LPAE !! 147 default 3
311 default 2 <<
312 <<
313 menu "System Type" <<
314 <<
315 config MMU <<
316 bool "MMU-based Paged Memory Managemen <<
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 <<
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 <<
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 <<
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 <<
495 148
496 config PLAT_ORION !! 149 config ARCH_SUPPORTS_UPROBES
497 bool !! 150 def_bool y if SPARC64
498 select CLKSRC_MMIO <<
499 select GENERIC_IRQ_CHIP <<
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 <<
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 <<
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 <<
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 <<
852 source "arch/arm/common/Kconfig" <<
853 <<
854 menu "Bus support" <<
855 <<
856 config ISA <<
857 bool <<
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 <<
869 config ARM_ERRATA_814220 <<
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 <<
887 help <<
888 This option should be selected by ma <<
889 capable CPU. <<
890 151
891 The only effect of this option is to !! 152 menu "Processor type and features"
892 options available to the user for co <<
893 153
894 config SMP 154 config SMP
895 bool "Symmetric Multi-Processing" !! 155 bool "Symmetric multi-processing support"
896 depends on CPU_V6K || CPU_V7 <<
897 depends on HAVE_SMP <<
898 depends on MMU || ARM_MPU <<
899 select IRQ_WORK <<
900 help 156 help
901 This enables support for systems wit 157 This enables support for systems with more than one CPU. If you have
902 a system with only one CPU, say N. I 158 a system with only one CPU, say N. If you have a system with more
903 than one CPU, say Y. 159 than one CPU, say Y.
904 160
905 If you say N here, the kernel will r 161 If you say N here, the kernel will run on uni- and multiprocessor
906 machines, but will use only one CPU 162 machines, but will use only one CPU of a multiprocessor machine. If
907 you say Y here, the kernel will run 163 you say Y here, the kernel will run on many, but not all,
908 uniprocessor machines. On a uniproce 164 uniprocessor machines. On a uniprocessor machine, the kernel
909 will run faster if you say N here. 165 will run faster if you say N here.
910 166
911 See also <file:Documentation/arch/x8 !! 167 People using multiprocessor machines who say Y here should also say
912 <file:Documentation/admin-guide/lock !! 168 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
913 <http://tldp.org/HOWTO/SMP-HOWTO.htm !! 169 Management" code will be disabled if you say Y here.
914 170
915 If you don't know what to do here, s !! 171 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
916 !! 172 available at <https://www.tldp.org/docs.html#howto>.
917 config SMP_ON_UP <<
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 <<
927 If you don't know what to do here, s <<
928 173
>> 174 If you don't know what to do here, say N.
929 175
930 config CURRENT_POINTER_IN_TPIDRURO !! 176 config NR_CPUS
931 def_bool y !! 177 int "Maximum number of CPUs"
932 depends on CPU_32v6K && !CPU_V6 !! 178 depends on SMP
>> 179 range 2 32 if SPARC32
>> 180 range 2 4096 if SPARC64
>> 181 default 32 if SPARC32
>> 182 default 4096 if SPARC64
933 183
934 config IRQSTACKS !! 184 source "kernel/Kconfig.hz"
935 def_bool y <<
936 select HAVE_IRQ_EXIT_ON_IRQ_STACK <<
937 select HAVE_SOFTIRQ_ON_OWN_STACK <<
938 185
939 config ARM_CPU_TOPOLOGY !! 186 config GENERIC_HWEIGHT
940 bool "Support cpu topology definition" !! 187 bool
941 depends on SMP && CPU_V7 <<
942 default y 188 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 <<
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. <<
963 189
964 config HAVE_ARM_SCU !! 190 config GENERIC_CALIBRATE_DELAY
965 bool 191 bool
966 help !! 192 default y
967 This option enables support for the <<
968 <<
969 config HAVE_ARM_ARCH_TIMER <<
970 bool "Architected timer support" <<
971 depends on CPU_V7 <<
972 select ARM_ARCH_TIMER <<
973 help <<
974 This option enables support for the <<
975 193
976 config HAVE_ARM_TWD !! 194 config ARCH_MAY_HAVE_PC_FDC
977 bool 195 bool
978 help !! 196 default y
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. <<
988 197
989 config MCPM_QUAD_CLUSTER !! 198 config EMULATED_CMPXCHG
990 bool 199 bool
991 depends on MCPM !! 200 default y if SPARC32
992 help 201 help
993 To avoid wasting resources unnecessa !! 202 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
994 to 2 clusters by default. !! 203 is emulated, and therefore it is not completely atomic.
995 Platforms with 3 or 4 clusters that <<
996 option to allow the additional clust <<
997 204
998 config BIG_LITTLE !! 205 # Makefile helpers
999 bool "big.LITTLE support (Experimental !! 206 config SPARC32_SMP
1000 depends on CPU_V7 && SMP !! 207 bool
1001 select MCPM !! 208 default y
1002 help !! 209 depends on SPARC32 && SMP
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 <<
1023 choice <<
1024 prompt "Memory split" <<
1025 depends on MMU <<
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 <<
1044 config PAGE_OFFSET <<
1045 hex <<
1046 default PHYS_OFFSET if !MMU <<
1047 default 0x40000000 if VMSPLIT_1G <<
1048 default 0x80000000 if VMSPLIT_2G <<
1049 default 0xB0000000 if VMSPLIT_3G_OPT <<
1050 default 0xC0000000 <<
1051 210
1052 config KASAN_SHADOW_OFFSET !! 211 config SPARC64_SMP
1053 hex !! 212 bool
1054 depends on KASAN !! 213 default y
1055 default 0x1f000000 if PAGE_OFFSET=0x4 !! 214 depends on SPARC64 && SMP
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 215
1061 config NR_CPUS !! 216 config EARLYFB
1062 int "Maximum number of CPUs (2-32)" !! 217 bool "Support for early boot text console"
1063 range 2 16 if DEBUG_KMAP_LOCAL !! 218 default y
1064 range 2 32 if !DEBUG_KMAP_LOCAL !! 219 depends on SPARC64
1065 depends on SMP <<
1066 default "4" <<
1067 help 220 help
1068 The maximum number of CPUs that the !! 221 Say Y here to enable a faster early framebuffer boot console.
1069 Up to 32 CPUs can be supported, or <<
1070 debugging is enabled, which uses ha <<
1071 slots as guard regions. <<
1072 222
1073 config HOTPLUG_CPU 223 config HOTPLUG_CPU
1074 bool "Support for hot-pluggable CPUs" 224 bool "Support for hot-pluggable CPUs"
1075 depends on SMP !! 225 depends on SPARC64 && SMP
1076 select GENERIC_IRQ_MIGRATION <<
1077 help 226 help
1078 Say Y here to experiment with turni 227 Say Y here to experiment with turning CPUs off and on. CPUs
1079 can be controlled through /sys/devi !! 228 can be controlled through /sys/devices/system/cpu/cpu#.
>> 229 Say N if you want to disable CPU hotplug.
>> 230
>> 231 if SPARC64
>> 232 source "drivers/cpufreq/Kconfig"
>> 233 endif
1080 234
1081 config ARM_PSCI !! 235 config US3_MC
1082 bool "Support for the ARM Power State !! 236 tristate "UltraSPARC-III Memory Controller driver"
1083 depends on HAVE_ARM_SMCCC !! 237 depends on SPARC64
1084 select ARM_PSCI_FW !! 238 default y
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 <<
1119 endchoice <<
1120 <<
1121 config HZ <<
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 239 help
1140 By enabling this option, the kernel !! 240 This adds a driver for the UltraSPARC-III memory controller.
1141 Thumb-2 mode. !! 241 Loading this driver allows exact mnemonic strings to be
>> 242 printed in the event of a memory error, so that the faulty DIMM
>> 243 on the motherboard can be matched to the error.
1142 244
1143 If unsure, say N. !! 245 If in doubt, say Y, as this information can be very useful.
1144 246
1145 config ARM_PATCH_IDIV !! 247 # Global things across all Sun machines.
1146 bool "Runtime patch udiv/sdiv instruc !! 248 config GENERIC_LOCKBREAK
1147 depends on CPU_32v7 !! 249 bool
1148 default y !! 250 default y
1149 help !! 251 depends on SPARC64 && SMP && PREEMPTION
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 252
1201 config ARCH_SELECT_MEMORY_MODEL !! 253 config NUMA
1202 def_bool y !! 254 bool "NUMA support"
>> 255 depends on SPARC64 && SMP
1203 256
1204 config ARCH_FLATMEM_ENABLE !! 257 config NODES_SHIFT
1205 def_bool !(ARCH_RPC || ARCH_SA1100) !! 258 int "Maximum NUMA Nodes (as a power of 2)"
>> 259 range 4 5 if SPARC64
>> 260 default "5"
>> 261 depends on NUMA
>> 262 help
>> 263 Specify the maximum number of NUMA Nodes available on the target
>> 264 system. Increases memory reserved to accommodate various tables.
1206 265
1207 config ARCH_SPARSEMEM_ENABLE 266 config ARCH_SPARSEMEM_ENABLE
1208 def_bool !ARCH_FOOTBRIDGE !! 267 def_bool y if SPARC64
1209 select SPARSEMEM_STATIC if SPARSEMEM !! 268 select SPARSEMEM_VMEMMAP_ENABLE
1210 269
1211 config HIGHMEM !! 270 config ARCH_SPARSEMEM_DEFAULT
1212 bool "High Memory Support" !! 271 def_bool y if SPARC64
1213 depends on MMU !! 272
1214 select KMAP_LOCAL !! 273 config ARCH_FORCE_MAX_ORDER
1215 select KMAP_LOCAL_NON_LINEAR_PTE_ARRA !! 274 int "Maximum zone order"
>> 275 default "13"
1216 help 276 help
1217 The address space of ARM processors !! 277 The kernel memory allocator divides physically contiguous memory
1218 and it has to accommodate user addr !! 278 blocks into "zones", where each zone is a power of two number of
1219 space as well as some memory mapped !! 279 pages. This option selects the largest power of two that the kernel
1220 have a large amount of physical mem !! 280 keeps in the memory allocator. If you need to allocate very large
1221 memory can be "permanently mapped" !! 281 blocks of physically contiguous memory, then you may need to
1222 memory that is not permanently mapp !! 282 increase this value.
1223 283
1224 Depending on the selected kernel/us !! 284 This config option is actually maximum order plus one. For example,
1225 vmalloc space and actual amount of !! 285 a value of 13 means that the largest free memory block is 2^12 pages.
1226 option which should result in a sli <<
1227 286
1228 If unsure, say n. !! 287 if SPARC64 || COMPILE_TEST
>> 288 source "kernel/power/Kconfig"
>> 289 endif
1229 290
1230 config HIGHPTE !! 291 config SCHED_SMT
1231 bool "Allocate 2nd-level pagetables f !! 292 bool "SMT (Hyperthreading) scheduler support"
1232 depends on HIGHMEM !! 293 depends on SPARC64 && SMP
1233 default y 294 default y
1234 help 295 help
1235 The VM uses one page of physical me !! 296 SMT scheduler support improves the CPU scheduler's decision making
1236 For systems with a lot of processes !! 297 when dealing with SPARC cpus at a cost of slightly increased overhead
1237 precious low memory, eventually lea !! 298 in some places. If unsure say N here.
1238 consumed by page tables. Setting t <<
1239 user-space 2nd level page tables to <<
1240 299
1241 config ARM_PAN !! 300 config SCHED_MC
1242 bool "Enable privileged no-access" !! 301 bool "Multi-core scheduler support"
1243 depends on MMU !! 302 depends on SPARC64 && SMP
1244 default y 303 default y
1245 help 304 help
1246 Increase kernel security by ensurin !! 305 Multi-core scheduler support improves the CPU scheduler's decision
1247 are unable to access userspace addr !! 306 making when dealing with multi-core CPU chips at a cost of slightly
1248 use-after-free bugs becoming an exp !! 307 increased overhead in some places. If unsure say N here.
1249 by ensuring that magic values (such <<
1250 fault when dereferenced. <<
1251 308
1252 The implementation uses CPU domains !! 309 config CMDLINE_BOOL
1253 disabling of TTBR0 page table walks !! 310 bool "Default bootloader kernel arguments"
>> 311 depends on SPARC64
1254 312
1255 config CPU_SW_DOMAIN_PAN !! 313 config CMDLINE
1256 def_bool y !! 314 string "Initial kernel command string"
1257 depends on ARM_PAN && !ARM_LPAE !! 315 depends on CMDLINE_BOOL
>> 316 default "console=ttyS0,9600 root=/dev/sda1"
1258 help 317 help
1259 Enable use of CPU domains to implem !! 318 Say Y here if you want to be able to pass default arguments to
>> 319 the kernel. This will be overridden by the bootloader, if you
>> 320 use one (such as SILO). This is most useful if you want to boot
>> 321 a kernel from TFTP, and want default options to be available
>> 322 with having them passed on the command line.
1260 323
1261 CPUs with low-vector mappings use a !! 324 NOTE: This option WILL override the PROM bootargs setting!
1262 Their lower 1MB needs to remain acc <<
1263 the remainder of userspace will bec <<
1264 325
1265 config CPU_TTBR0_PAN !! 326 config SUN_PM
1266 def_bool y !! 327 bool
1267 depends on ARM_PAN && ARM_LPAE !! 328 default y if SPARC32
1268 help 329 help
1269 Enable privileged no-access by disa !! 330 Enable power management and CPU standby features on supported
1270 running in kernel mode. !! 331 SPARC platforms.
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 <<
1355 config XEN_DOM0 <<
1356 def_bool y <<
1357 depends on XEN <<
1358 <<
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 332
1389 Enable this option to switch to a d !! 333 config SPARC_LED
1390 different canary value for each tas !! 334 tristate "Sun4m LED driver"
1391 !! 335 depends on SPARC32
1392 endmenu <<
1393 <<
1394 menu "Boot options" <<
1395 <<
1396 config USE_OF <<
1397 bool "Flattened Device Tree support" <<
1398 select IRQ_DOMAIN <<
1399 select OF <<
1400 help 336 help
1401 Include support for flattened devic !! 337 This driver toggles the front-panel LED on sun4m systems
>> 338 in a user-specifiable manner. Its state can be probed
>> 339 by reading /proc/led and its blinking mode can be changed
>> 340 via writes to /proc/led
1402 341
1403 config ARCH_WANT_FLAT_DTB_INSTALL !! 342 config SERIAL_CONSOLE
1404 def_bool y !! 343 bool
1405 !! 344 depends on SPARC32
1406 config ATAGS <<
1407 bool "Support for the traditional ATA <<
1408 default y 345 default y
1409 help 346 help
1410 This is the traditional way of pass !! 347 If you say Y here, it will be possible to use a serial port as the
1411 time. If you are solely relying on !! 348 system console (the system console is the device which receives all
1412 the ARM_ATAG_DTB_COMPAT option) the !! 349 kernel messages and warnings and which allows logins in single user
1413 to remove ATAGS support from your k !! 350 mode). This could be useful if some terminal or printer is connected
1414 !! 351 to that serial port.
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 <<
1488 choice <<
1489 prompt "Kernel command line type" <<
1490 depends on ARM_ATAG_DTB_COMPAT <<
1491 default ARM_ATAG_DTB_COMPAT_CMDLINE_F <<
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 352
1500 config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND !! 353 Even if you say Y here, the currently visible virtual console
1501 bool "Extend with bootloader kernel a !! 354 (/dev/tty0) will still be used as the system console by default, but
1502 help !! 355 you can alter that using a kernel command line option such as
1503 The command-line arguments provided !! 356 "console=ttyS1". (Try "man bootparam" or see the documentation of
1504 appended to the the device tree boo !! 357 your boot loader (silo) about how to pass options to the kernel at
>> 358 boot time.)
1505 359
1506 endchoice !! 360 If you don't have a graphics card installed and you say Y here, the
1507 !! 361 kernel will automatically use the first serial line, /dev/ttyS0, as
1508 config CMDLINE !! 362 system console.
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 <<
1518 choice <<
1519 prompt "Kernel command line type" <<
1520 depends on CMDLINE != "" <<
1521 default CMDLINE_FROM_BOOTLOADER <<
1522 <<
1523 config CMDLINE_FROM_BOOTLOADER <<
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 <<
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 <<
1545 config XIP_KERNEL <<
1546 bool "Kernel Execute-In-Place from RO <<
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 363
1565 If unsure, say N. 364 If unsure, say N.
1566 365
1567 config XIP_PHYS_ADDR !! 366 config SPARC_LEON
1568 hex "XIP Kernel Physical Location" !! 367 bool "Sparc Leon processor family"
1569 depends on XIP_KERNEL !! 368 depends on SPARC32
1570 default "0x00080000" !! 369 select USB_EHCI_BIG_ENDIAN_MMIO
1571 help !! 370 select USB_EHCI_BIG_ENDIAN_DESC
1572 This is the physical address in you !! 371 select USB_UHCI_BIG_ENDIAN_MMIO
1573 be linked for and stored to. This !! 372 select USB_UHCI_BIG_ENDIAN_DESC
1574 own flash usage. !! 373 help
1575 !! 374 If you say Y here if you are running on a SPARC-LEON processor.
1576 config XIP_DEFLATED_DATA !! 375 The LEON processor is a synthesizable VHDL model of the
1577 bool "Store kernel .data section comp !! 376 SPARC-v8 standard. LEON is part of the GRLIB collection of
1578 depends on XIP_KERNEL !! 377 IP cores that are distributed under GPL. GRLIB can be downloaded
1579 select ZLIB_INFLATE !! 378 from www.gaisler.com. You can download a sparc-linux cross-compilation
1580 help !! 379 toolchain at www.gaisler.com.
1581 Before the kernel is actually execu !! 380
1582 copied to RAM from ROM. This option !! 381 if SPARC_LEON
1583 in compressed form and decompressed !! 382 menu "U-Boot options"
1584 copied, saving some precious ROM sp !! 383
1585 slightly longer boot delay. !! 384 config UBOOT_LOAD_ADDR
1586 !! 385 hex "uImage Load Address"
1587 config ARCH_SUPPORTS_KEXEC !! 386 default 0x40004000
1588 def_bool (!SMP || PM_SLEEP_SMP) && MM !! 387 help
1589 !! 388 U-Boot kernel load address, the address in physical address space
1590 config ATAGS_PROC !! 389 where u-boot will place the Linux kernel before booting it.
1591 bool "Export atags in procfs" !! 390 This address is normally the base address of main memory + 0x4000.
1592 depends on ATAGS && KEXEC !! 391
1593 default y !! 392 config UBOOT_FLASH_ADDR
>> 393 hex "uImage.o Load Address"
>> 394 default 0x00080000
>> 395 help
>> 396 Optional setting only affecting the uImage.o ELF-image used to
>> 397 download the uImage file to the target using a ELF-loader other than
>> 398 U-Boot. It may for example be used to download an uImage to FLASH with
>> 399 the GRMON utility before even starting u-boot.
>> 400
>> 401 config UBOOT_ENTRY_ADDR
>> 402 hex "uImage Entry Address"
>> 403 default 0xf0004000
1594 help 404 help
1595 Should the atags used to boot the k !! 405 Do not change this unless you know what you're doing. This is
1596 file in procfs. Useful with kexec. !! 406 hardcoded by the SPARC32 and LEON port.
1597 407
1598 config ARCH_SUPPORTS_CRASH_DUMP !! 408 This is the virtual address u-boot jumps to when booting the Linux
1599 def_bool y !! 409 Kernel.
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 <<
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 410
1648 endmenu 411 endmenu
1649 !! 412 endif
1650 menu "CPU Power Management" <<
1651 <<
1652 source "drivers/cpufreq/Kconfig" <<
1653 <<
1654 source "drivers/cpuidle/Kconfig" <<
1655 413
1656 endmenu 414 endmenu
1657 415
1658 menu "Floating point emulation" !! 416 menu "Bus options (PCI etc.)"
>> 417 config SBUS
>> 418 bool
>> 419 default y
1659 420
1660 comment "At least one emulation must be selec !! 421 config SBUSCHAR
>> 422 bool
>> 423 default y
1661 424
1662 config FPE_NWFPE !! 425 config SUN_LDOMS
1663 bool "NWFPE math emulation" !! 426 bool "Sun Logical Domains support"
1664 depends on (!AEABI || OABI_COMPAT) && !! 427 depends on SPARC64
1665 help 428 help
1666 Say Y to include the NWFPE floating !! 429 Say Y here is you want to support virtual devices via
1667 This is necessary to run most binar !! 430 Logical Domains.
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 431
1674 config FPE_NWFPE_XP !! 432 config PCIC_PCI
1675 bool "Support extended precision" !! 433 bool
1676 depends on FPE_NWFPE !! 434 depends on PCI && SPARC32 && !SPARC_LEON
1677 help !! 435 default y
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 436
1684 You almost surely want to say N her !! 437 config LEON_PCI
>> 438 bool
>> 439 depends on PCI && SPARC_LEON
>> 440 default y
1685 441
1686 config FPE_FASTFPE !! 442 config SPARC_GRPCI1
1687 bool "FastFPE math emulation (EXPERIM !! 443 bool "GRPCI Host Bridge Support"
1688 depends on (!AEABI || OABI_COMPAT) && !! 444 depends on LEON_PCI
>> 445 default y
1689 help 446 help
1690 Say Y here to include the FAST floa !! 447 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
1691 This is an experimental much faster !! 448 PCI host controller is typically found in GRLIB SPARC32/LEON
1692 precision for the mantissa. It doe !! 449 systems. The driver has one property (all_pci_errors) controlled
1693 It is very simple, and approximatel !! 450 from the bootloader that makes the GRPCI to generate interrupts
>> 451 on detected PCI Parity and System errors.
1694 452
1695 It should be sufficient for most pr !! 453 config SPARC_GRPCI2
1696 for scientific calculations, but yo !! 454 bool "GRPCI2 Host Bridge Support"
1697 If you do not feel you need a faste !! 455 depends on LEON_PCI
1698 choose NWFPE. !! 456 default y
>> 457 help
>> 458 Say Y here to include the GRPCI2 Host Bridge Driver.
1699 459
1700 config VFP !! 460 config SUN_OPENPROMFS
1701 bool "VFP-format floating point maths !! 461 tristate "Openprom tree appears in /proc/openprom"
1702 depends on CPU_V6 || CPU_V6K || CPU_A <<
1703 help 462 help
1704 Say Y to include VFP support code i !! 463 If you say Y, the OpenPROM device tree will be available as a
1705 if your hardware includes a VFP uni !! 464 virtual file system, which you can mount to /proc/openprom by "mount
>> 465 -t openpromfs none /proc/openprom".
1706 466
1707 Please see <file:Documentation/arch !! 467 To compile the /proc/openprom support as a module, choose M here: the
1708 release notes and additional status !! 468 module will be called openpromfs.
1709 469
1710 Say N if your target does not have !! 470 Only choose N if you know in advance that you will not need to modify
>> 471 OpenPROM settings on the running system.
1711 472
1712 config VFPv3 !! 473 # Makefile helpers
>> 474 config SPARC64_PCI
1713 bool 475 bool
1714 depends on VFP !! 476 default y
1715 default y if CPU_V7 !! 477 depends on SPARC64 && PCI
1716 <<
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 478
1724 config KERNEL_MODE_NEON !! 479 config SPARC64_PCI_MSI
1725 bool "Support for NEON in kernel mode !! 480 bool
1726 depends on NEON && AEABI !! 481 default y
1727 help !! 482 depends on SPARC64_PCI && PCI_MSI
1728 Say Y to include support for NEON i <<
1729 483
1730 endmenu 484 endmenu
1731 485
1732 menu "Power management options" !! 486 config COMPAT
1733 <<
1734 source "kernel/power/Kconfig" <<
1735 <<
1736 config ARCH_SUSPEND_POSSIBLE <<
1737 depends on CPU_ARM920T || CPU_ARM926T <<
1738 CPU_V6 || CPU_V6K || CPU_V7 | <<
1739 def_bool y <<
1740 <<
1741 config ARM_CPU_SUSPEND <<
1742 def_bool PM_SLEEP || BL_SWITCHER || A <<
1743 depends on ARCH_SUSPEND_POSSIBLE <<
1744 <<
1745 config ARCH_HIBERNATION_POSSIBLE <<
1746 bool 487 bool
1747 depends on MMU !! 488 depends on SPARC64
1748 default y if ARCH_SUSPEND_POSSIBLE !! 489 default y
1749 !! 490 select HAVE_UID16
1750 endmenu !! 491 select ARCH_WANT_OLD_COMPAT_IPC
>> 492 select COMPAT_OLD_SIGACTION
1751 493
1752 source "arch/arm/Kconfig.assembler" !! 494 source "drivers/sbus/char/Kconfig"
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