1 # SPDX-License-Identifier: GPL-2.0-only !! 1 config ALPHA
2 # <<
3 # For a description of the syntax of this conf <<
4 # see Documentation/kbuild/kconfig-language.rs <<
5 # <<
6 <<
7 config 64BIT <<
8 bool <<
9 <<
10 config 32BIT <<
11 bool 2 bool
12 !! 3 default y
13 config RISCV !! 4 select ARCH_MIGHT_HAVE_PC_PARPORT
14 def_bool y !! 5 select ARCH_MIGHT_HAVE_PC_SERIO
15 select ACPI_GENERIC_GSI if ACPI !! 6 select ARCH_USE_CMPXCHG_LOCKREF
16 select ACPI_MCFG if (ACPI && PCI) !! 7 select HAVE_AOUT
17 select ACPI_PPTT if ACPI !! 8 select HAVE_IDE
18 select ACPI_REDUCED_HARDWARE_ONLY if A !! 9 select HAVE_OPROFILE
19 select ACPI_SPCR_TABLE if ACPI !! 10 select HAVE_PCSPKR_PLATFORM
20 select ARCH_DMA_DEFAULT_COHERENT !! 11 select HAVE_PERF_EVENTS
21 select ARCH_ENABLE_HUGEPAGE_MIGRATION !! 12 select VIRT_TO_BUS
22 select ARCH_ENABLE_MEMORY_HOTPLUG if S !! 13 select GENERIC_IRQ_PROBE
23 select ARCH_ENABLE_MEMORY_HOTREMOVE if !! 14 select AUTO_IRQ_AFFINITY if SMP
24 select ARCH_ENABLE_SPLIT_PMD_PTLOCK if <<
25 select ARCH_ENABLE_THP_MIGRATION if TR <<
26 select ARCH_HAS_BINFMT_FLAT <<
27 select ARCH_HAS_CURRENT_STACK_POINTER <<
28 select ARCH_HAS_DEBUG_VIRTUAL if MMU <<
29 select ARCH_HAS_DEBUG_VM_PGTABLE <<
30 select ARCH_HAS_DEBUG_WX <<
31 select ARCH_HAS_FAST_MULTIPLIER <<
32 select ARCH_HAS_FORTIFY_SOURCE <<
33 select ARCH_HAS_GCOV_PROFILE_ALL <<
34 select ARCH_HAS_GIGANTIC_PAGE <<
35 select ARCH_HAS_KCOV <<
36 select ARCH_HAS_KERNEL_FPU_SUPPORT if <<
37 select ARCH_HAS_MEMBARRIER_CALLBACKS <<
38 select ARCH_HAS_MEMBARRIER_SYNC_CORE <<
39 select ARCH_HAS_MMIOWB <<
40 select ARCH_HAS_NON_OVERLAPPING_ADDRES <<
41 select ARCH_HAS_PMEM_API <<
42 select ARCH_HAS_PREPARE_SYNC_CORE_CMD <<
43 select ARCH_HAS_PTE_DEVMAP if 64BIT && <<
44 select ARCH_HAS_PTE_SPECIAL <<
45 select ARCH_HAS_SET_DIRECT_MAP if MMU <<
46 select ARCH_HAS_SET_MEMORY if MMU <<
47 select ARCH_HAS_STRICT_KERNEL_RWX if M <<
48 select ARCH_HAS_STRICT_MODULE_RWX if M <<
49 select ARCH_HAS_SYNC_CORE_BEFORE_USERM <<
50 select ARCH_HAS_SYSCALL_WRAPPER <<
51 select ARCH_HAS_TICK_BROADCAST if GENE <<
52 select ARCH_HAS_UBSAN <<
53 select ARCH_HAS_VDSO_DATA <<
54 select ARCH_KEEP_MEMBLOCK if ACPI <<
55 select ARCH_MHP_MEMMAP_ON_MEMORY_ENABL <<
56 select ARCH_OPTIONAL_KERNEL_RWX if ARC <<
57 select ARCH_OPTIONAL_KERNEL_RWX_DEFAUL <<
58 select ARCH_STACKWALK <<
59 select ARCH_SUPPORTS_ATOMIC_RMW <<
60 select ARCH_SUPPORTS_CFI_CLANG <<
61 select ARCH_SUPPORTS_DEBUG_PAGEALLOC i <<
62 select ARCH_SUPPORTS_HUGETLBFS if MMU <<
63 # LLD >= 14: https://github.com/llvm/l <<
64 select ARCH_SUPPORTS_LTO_CLANG if LLD_ <<
65 select ARCH_SUPPORTS_LTO_CLANG_THIN if <<
66 select ARCH_SUPPORTS_PAGE_TABLE_CHECK <<
67 select ARCH_SUPPORTS_PER_VMA_LOCK if M <<
68 select ARCH_SUPPORTS_RT <<
69 select ARCH_SUPPORTS_SHADOW_CALL_STACK <<
70 select ARCH_USE_CMPXCHG_LOCKREF if 64B <<
71 select ARCH_USE_MEMTEST <<
72 select ARCH_USE_QUEUED_RWLOCKS <<
73 select ARCH_USE_SYM_ANNOTATIONS <<
74 select ARCH_USES_CFI_TRAPS if CFI_CLAN <<
75 select ARCH_WANT_BATCHED_UNMAP_TLB_FLU <<
76 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_ <<
77 select ARCH_WANT_FRAME_POINTERS <<
78 select ARCH_WANT_GENERAL_HUGETLB if !R <<
79 select ARCH_WANT_HUGE_PMD_SHARE if 64B <<
80 select ARCH_WANT_LD_ORPHAN_WARN if !XI <<
81 select ARCH_WANT_OPTIMIZE_DAX_VMEMMAP <<
82 select ARCH_WANT_OPTIMIZE_HUGETLB_VMEM <<
83 select ARCH_WANTS_NO_INSTR <<
84 select ARCH_WANTS_THP_SWAP if HAVE_ARC <<
85 select BINFMT_FLAT_NO_DATA_START_OFFSE <<
86 select BUILDTIME_TABLE_SORT if MMU <<
87 select CLINT_TIMER if RISCV_M_MODE <<
88 select CLONE_BACKWARDS <<
89 select COMMON_CLK <<
90 select CPU_PM if CPU_IDLE || HIBERNATI <<
91 select EDAC_SUPPORT <<
92 select FRAME_POINTER if PERF_EVENTS || <<
93 select FTRACE_MCOUNT_USE_PATCHABLE_FUN <<
94 select GENERIC_ARCH_TOPOLOGY <<
95 select GENERIC_ATOMIC64 if !64BIT <<
96 select GENERIC_CLOCKEVENTS_BROADCAST i <<
97 select GENERIC_CPU_DEVICES <<
98 select GENERIC_CPU_VULNERABILITIES <<
99 select GENERIC_EARLY_IOREMAP <<
100 select GENERIC_ENTRY <<
101 select GENERIC_GETTIMEOFDAY if HAVE_GE <<
102 select GENERIC_IDLE_POLL_SETUP <<
103 select GENERIC_IOREMAP if MMU <<
104 select GENERIC_IRQ_IPI if SMP <<
105 select GENERIC_IRQ_IPI_MUX if SMP <<
106 select GENERIC_IRQ_MULTI_HANDLER <<
107 select GENERIC_IRQ_SHOW 15 select GENERIC_IRQ_SHOW
108 select GENERIC_IRQ_SHOW_LEVEL !! 16 select ARCH_WANT_IPC_PARSE_VERSION
109 select GENERIC_LIB_DEVMEM_IS_ALLOWED !! 17 select ARCH_HAVE_NMI_SAFE_CMPXCHG
110 select GENERIC_PCI_IOMAP !! 18 select AUDIT_ARCH
111 select GENERIC_PTDUMP if MMU !! 19 select GENERIC_CLOCKEVENTS
112 select GENERIC_SCHED_CLOCK <<
113 select GENERIC_SMP_IDLE_THREAD 20 select GENERIC_SMP_IDLE_THREAD
114 select GENERIC_TIME_VSYSCALL if MMU && !! 21 select GENERIC_STRNCPY_FROM_USER
115 select GENERIC_VDSO_TIME_NS if HAVE_GE !! 22 select GENERIC_STRNLEN_USER
116 select HARDIRQS_SW_RESEND <<
117 select HAS_IOPORT if MMU <<
118 select HAVE_ARCH_AUDITSYSCALL 23 select HAVE_ARCH_AUDITSYSCALL
119 select HAVE_ARCH_HUGE_VMALLOC if HAVE_ !! 24 select HAVE_MOD_ARCH_SPECIFIC
120 select HAVE_ARCH_HUGE_VMAP if MMU && 6 !! 25 select MODULES_USE_ELF_RELA
121 select HAVE_ARCH_JUMP_LABEL if !XIP_KE !! 26 select ODD_RT_SIGACTION
122 select HAVE_ARCH_JUMP_LABEL_RELATIVE i !! 27 select OLD_SIGSUSPEND
123 select HAVE_ARCH_KASAN if MMU && 64BIT !! 28 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
124 select HAVE_ARCH_KASAN_VMALLOC if MMU !! 29 help
125 select HAVE_ARCH_KFENCE if MMU && 64BI !! 30 The Alpha is a 64-bit general-purpose processor designed and
126 select HAVE_ARCH_KGDB if !XIP_KERNEL !! 31 marketed by the Digital Equipment Corporation of blessed memory,
127 select HAVE_ARCH_KGDB_QXFER_PKT !! 32 now Hewlett-Packard. The Alpha Linux project has a home page at
128 select HAVE_ARCH_MMAP_RND_BITS if MMU !! 33 <http://www.alphalinux.org/>.
129 select HAVE_ARCH_MMAP_RND_COMPAT_BITS <<
130 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS <<
131 select HAVE_ARCH_SECCOMP_FILTER <<
132 select HAVE_ARCH_STACKLEAK <<
133 select HAVE_ARCH_THREAD_STRUCT_WHITELI <<
134 select HAVE_ARCH_TRACEHOOK <<
135 select HAVE_ARCH_TRANSPARENT_HUGEPAGE <<
136 select HAVE_ARCH_USERFAULTFD_MINOR if <<
137 select HAVE_ARCH_VMAP_STACK if MMU && <<
138 select HAVE_ASM_MODVERSIONS <<
139 select HAVE_CONTEXT_TRACKING_USER <<
140 select HAVE_DEBUG_KMEMLEAK <<
141 select HAVE_DMA_CONTIGUOUS if MMU <<
142 select HAVE_DYNAMIC_FTRACE if !XIP_KER <<
143 select HAVE_DYNAMIC_FTRACE_WITH_DIRECT <<
144 select HAVE_DYNAMIC_FTRACE_WITH_ARGS i <<
145 select HAVE_FTRACE_MCOUNT_RECORD if !X <<
146 select HAVE_FUNCTION_GRAPH_TRACER <<
147 select HAVE_FUNCTION_GRAPH_RETVAL if H <<
148 select HAVE_FUNCTION_TRACER if !XIP_KE <<
149 select HAVE_EBPF_JIT if MMU <<
150 select HAVE_GUP_FAST if MMU <<
151 select HAVE_FUNCTION_ARG_ACCESS_API <<
152 select HAVE_FUNCTION_ERROR_INJECTION <<
153 select HAVE_GCC_PLUGINS <<
154 select HAVE_GENERIC_VDSO if MMU && 64B <<
155 select HAVE_IRQ_TIME_ACCOUNTING <<
156 select HAVE_KERNEL_BZIP2 if !XIP_KERNE <<
157 select HAVE_KERNEL_GZIP if !XIP_KERNEL <<
158 select HAVE_KERNEL_LZ4 if !XIP_KERNEL <<
159 select HAVE_KERNEL_LZMA if !XIP_KERNEL <<
160 select HAVE_KERNEL_LZO if !XIP_KERNEL <<
161 select HAVE_KERNEL_UNCOMPRESSED if !XI <<
162 select HAVE_KERNEL_ZSTD if !XIP_KERNEL <<
163 select HAVE_KERNEL_XZ if !XIP_KERNEL & <<
164 select HAVE_KPROBES if !XIP_KERNEL <<
165 select HAVE_KRETPROBES if !XIP_KERNEL <<
166 # https://github.com/ClangBuiltLinux/l <<
167 select HAVE_LD_DEAD_CODE_DATA_ELIMINAT <<
168 select HAVE_MOVE_PMD <<
169 select HAVE_MOVE_PUD <<
170 select HAVE_PAGE_SIZE_4KB <<
171 select HAVE_PCI <<
172 select HAVE_PERF_EVENTS <<
173 select HAVE_PERF_REGS <<
174 select HAVE_PERF_USER_STACK_DUMP <<
175 select HAVE_POSIX_CPU_TIMERS_TASK_WORK <<
176 select HAVE_PREEMPT_DYNAMIC_KEY if !XI <<
177 select HAVE_REGS_AND_STACK_ACCESS_API <<
178 select HAVE_RETHOOK if !XIP_KERNEL <<
179 select HAVE_RSEQ <<
180 select HAVE_RUST if RUSTC_SUPPORTS_RIS <<
181 select HAVE_SAMPLE_FTRACE_DIRECT <<
182 select HAVE_SAMPLE_FTRACE_DIRECT_MULTI <<
183 select HAVE_STACKPROTECTOR <<
184 select HAVE_SYSCALL_TRACEPOINTS <<
185 select HOTPLUG_CORE_SYNC_DEAD if HOTPL <<
186 select IRQ_DOMAIN <<
187 select IRQ_FORCED_THREADING <<
188 select KASAN_VMALLOC if KASAN <<
189 select LOCK_MM_AND_FIND_VMA <<
190 select MMU_GATHER_RCU_TABLE_FREE if SM <<
191 select MODULES_USE_ELF_RELA if MODULES <<
192 select OF <<
193 select OF_EARLY_FLATTREE <<
194 select OF_IRQ <<
195 select PCI_DOMAINS_GENERIC if PCI <<
196 select PCI_ECAM if (ACPI && PCI) <<
197 select PCI_MSI if PCI <<
198 select RISCV_ALTERNATIVE if !XIP_KERNE <<
199 select RISCV_APLIC <<
200 select RISCV_IMSIC <<
201 select RISCV_INTC <<
202 select RISCV_TIMER if RISCV_SBI <<
203 select SIFIVE_PLIC <<
204 select SPARSE_IRQ <<
205 select SYSCTL_EXCEPTION_TRACE <<
206 select THREAD_INFO_IN_TASK <<
207 select TRACE_IRQFLAGS_SUPPORT <<
208 select UACCESS_MEMCPY if !MMU <<
209 select USER_STACKTRACE_SUPPORT <<
210 select ZONE_DMA32 if 64BIT <<
211 <<
212 config RUSTC_SUPPORTS_RISCV <<
213 def_bool y <<
214 depends on 64BIT <<
215 # Shadow call stack requires rustc ver <<
216 # -Zsanitizer=shadow-call-stack flag. <<
217 depends on !SHADOW_CALL_STACK || RUSTC <<
218 <<
219 config CLANG_SUPPORTS_DYNAMIC_FTRACE <<
220 def_bool CC_IS_CLANG <<
221 # https://github.com/ClangBuiltLinux/l <<
222 depends on AS_IS_GNU || (AS_IS_LLVM && <<
223 <<
224 config GCC_SUPPORTS_DYNAMIC_FTRACE <<
225 def_bool CC_IS_GCC <<
226 depends on $(cc-option,-fpatchable-fun <<
227 <<
228 config HAVE_SHADOW_CALL_STACK <<
229 def_bool $(cc-option,-fsanitize=shadow <<
230 # https://github.com/riscv-non-isa/ris <<
231 depends on $(ld-option,--no-relax-gp) <<
232 <<
233 config RISCV_USE_LINKER_RELAXATION <<
234 def_bool y <<
235 # https://github.com/llvm/llvm-project <<
236 depends on !LD_IS_LLD || LLD_VERSION > <<
237 34
238 # https://github.com/llvm/llvm-project/commit/ !! 35 config 64BIT
239 config ARCH_HAS_BROKEN_DWARF5 <<
240 def_bool y 36 def_bool y
241 depends on RISCV_USE_LINKER_RELAXATION <<
242 # https://github.com/llvm/llvm-project <<
243 depends on AS_IS_LLVM && AS_VERSION < <<
244 # https://github.com/llvm/llvm-project <<
245 depends on LD_IS_LLD && LLD_VERSION < <<
246 <<
247 config ARCH_MMAP_RND_BITS_MIN <<
248 default 18 if 64BIT <<
249 default 8 <<
250 <<
251 config ARCH_MMAP_RND_COMPAT_BITS_MIN <<
252 default 8 <<
253 <<
254 # max bits determined by the following formula <<
255 # VA_BITS - PAGE_SHIFT - 3 <<
256 config ARCH_MMAP_RND_BITS_MAX <<
257 default 24 if 64BIT # SV39 based <<
258 default 17 <<
259 37
260 config ARCH_MMAP_RND_COMPAT_BITS_MAX !! 38 config MMU
261 default 17 !! 39 bool
262 <<
263 # set if we run in machine mode, cleared if we <<
264 config RISCV_M_MODE <<
265 bool "Build a kernel that runs in mach <<
266 depends on !MMU <<
267 default y 40 default y
268 help <<
269 Select this option if you want to ru <<
270 without the assistance of any other <<
271 41
272 # set if we are running in S-mode and can use !! 42 config RWSEM_GENERIC_SPINLOCK
273 config RISCV_SBI <<
274 bool 43 bool
275 depends on !RISCV_M_MODE <<
276 default y <<
277 44
278 config MMU !! 45 config RWSEM_XCHGADD_ALGORITHM
279 bool "MMU-based Paged Memory Managemen !! 46 bool
280 default y 47 default y
281 help <<
282 Select if you want MMU-based virtual <<
283 support by paged memory management. <<
284 <<
285 config PAGE_OFFSET <<
286 hex <<
287 default 0x80000000 if !MMU && RISCV_M_ <<
288 default 0x80200000 if !MMU <<
289 default 0xc0000000 if 32BIT <<
290 default 0xff60000000000000 if 64BIT <<
291 <<
292 config KASAN_SHADOW_OFFSET <<
293 hex <<
294 depends on KASAN_GENERIC <<
295 default 0xdfffffff00000000 if 64BIT <<
296 default 0xffffffff if 32BIT <<
297 <<
298 config ARCH_FLATMEM_ENABLE <<
299 def_bool !NUMA <<
300 <<
301 config ARCH_SPARSEMEM_ENABLE <<
302 def_bool y <<
303 depends on MMU <<
304 select SPARSEMEM_STATIC if 32BIT && SP <<
305 select SPARSEMEM_VMEMMAP_ENABLE if 64B <<
306 <<
307 config ARCH_SELECT_MEMORY_MODEL <<
308 def_bool ARCH_SPARSEMEM_ENABLE <<
309 48
310 config ARCH_SUPPORTS_UPROBES !! 49 config ARCH_HAS_ILOG2_U32
311 def_bool y !! 50 bool
>> 51 default n
312 52
313 config STACKTRACE_SUPPORT !! 53 config ARCH_HAS_ILOG2_U64
314 def_bool y !! 54 bool
>> 55 default n
315 56
316 config GENERIC_BUG !! 57 config GENERIC_CALIBRATE_DELAY
317 def_bool y !! 58 bool
318 depends on BUG !! 59 default y
319 select GENERIC_BUG_RELATIVE_POINTERS i <<
320 60
321 config GENERIC_BUG_RELATIVE_POINTERS !! 61 config ZONE_DMA
322 bool 62 bool
>> 63 default y
323 64
324 config GENERIC_CALIBRATE_DELAY !! 65 config ARCH_DMA_ADDR_T_64BIT
325 def_bool y 66 def_bool y
326 67
327 config GENERIC_CSUM !! 68 config NEED_DMA_MAP_STATE
328 def_bool y !! 69 def_bool y
329 70
330 config GENERIC_HWEIGHT !! 71 config NEED_SG_DMA_LENGTH
331 def_bool y 72 def_bool y
332 73
333 config FIX_EARLYCON_MEM !! 74 config GENERIC_ISA_DMA
334 def_bool MMU !! 75 bool
335 !! 76 default y
336 config ILLEGAL_POINTER_VALUE <<
337 hex <<
338 default 0 if 32BIT <<
339 default 0xdead000000000000 if 64BIT <<
340 77
341 config PGTABLE_LEVELS 78 config PGTABLE_LEVELS
342 int 79 int
343 default 5 if 64BIT !! 80 default 3
344 default 2 <<
345 81
346 config LOCKDEP_SUPPORT !! 82 source "init/Kconfig"
347 def_bool y !! 83 source "kernel/Kconfig.freezer"
348 84
349 config RISCV_DMA_NONCOHERENT !! 85 config AUDIT_ARCH
350 bool 86 bool
351 select ARCH_HAS_DMA_PREP_COHERENT <<
352 select ARCH_HAS_SETUP_DMA_OPS <<
353 select ARCH_HAS_SYNC_DMA_FOR_CPU <<
354 select ARCH_HAS_SYNC_DMA_FOR_DEVICE <<
355 select DMA_BOUNCE_UNALIGNED_KMALLOC if <<
356 87
357 config RISCV_NONSTANDARD_CACHE_OPS !! 88 menu "System setup"
358 bool <<
359 help <<
360 This enables function pointer suppor <<
361 systems to handle cache management. <<
362 89
363 config AS_HAS_INSN !! 90 choice
364 def_bool $(as-instr,.insn r 51$(comma) !! 91 prompt "Alpha system type"
>> 92 default ALPHA_GENERIC
>> 93 ---help---
>> 94 This is the system type of your hardware. A "generic" kernel will
>> 95 run on any supported Alpha system. However, if you configure a
>> 96 kernel for your specific system, it will be faster and smaller.
365 97
366 config AS_HAS_OPTION_ARCH !! 98 To find out what type of Alpha system you have, you may want to
367 # https://github.com/llvm/llvm-project !! 99 check out the Linux/Alpha FAQ, accessible on the WWW from
368 def_bool y !! 100 <http://www.alphalinux.org/>. In summary:
369 depends on $(as-instr, .option arch$(c <<
370 101
371 source "arch/riscv/Kconfig.socs" !! 102 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
372 source "arch/riscv/Kconfig.errata" !! 103 Alpha-XL XL-233, XL-266
>> 104 AlphaBook1 Alpha laptop
>> 105 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
>> 106 Cabriolet AlphaPC64, AlphaPCI64
>> 107 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
>> 108 EB164 EB164 21164 evaluation board
>> 109 EB64+ EB64+ 21064 evaluation board
>> 110 EB66 EB66 21066 evaluation board
>> 111 EB66+ EB66+ 21066 evaluation board
>> 112 Jensen DECpc 150, DEC 2000 models 300, 500
>> 113 LX164 AlphaPC164-LX
>> 114 Lynx AS 2100A
>> 115 Miata Personal Workstation 433/500/600 a/au
>> 116 Marvel AlphaServer ES47 / ES80 / GS1280
>> 117 Mikasa AS 1000
>> 118 Noname AXPpci33, UDB (Multia)
>> 119 Noritake AS 1000A, AS 600A, AS 800
>> 120 PC164 AlphaPC164
>> 121 Rawhide AS 1200, AS 4000, AS 4100
>> 122 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
>> 123 SX164 AlphaPC164-SX
>> 124 Sable AS 2000, AS 2100
>> 125 Shark DS 20L
>> 126 Takara Takara (OEM)
>> 127 Titan AlphaServer ES45 / DS25 / DS15
>> 128 Wildfire AlphaServer GS 40/80/160/320
373 129
374 menu "Platform type" !! 130 If you don't know what to do, choose "generic".
375 131
376 config NONPORTABLE !! 132 config ALPHA_GENERIC
377 bool "Allow configurations that result !! 133 bool "Generic"
>> 134 depends on TTY
378 help 135 help
379 RISC-V kernel binaries are compatibl !! 136 A generic kernel will run on all supported Alpha hardware.
380 whenever possible, but there are som <<
381 satisfied by configurations that res <<
382 not portable between systems. <<
383 137
384 Selecting N does not guarantee kerne !! 138 config ALPHA_ALCOR
385 systems. Selecting any of the optio !! 139 bool "Alcor/Alpha-XLT"
386 result in kernel binaries that are u <<
387 systems. <<
388 <<
389 If unsure, say N. <<
390 <<
391 choice <<
392 prompt "Base ISA" <<
393 default ARCH_RV64I <<
394 help 140 help
395 This selects the base ISA that this !! 141 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
396 the target platform. !! 142 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
397 !! 143 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
398 config ARCH_RV32I !! 144 controller (256-bit memory bus) and a PCI interface. It also does
399 bool "RV32I" !! 145 all the work required to support an external Bcache and to maintain
400 depends on NONPORTABLE !! 146 memory coherence when a PCI device DMAs into (or out of) memory.
401 select 32BIT <<
402 select GENERIC_LIB_ASHLDI3 <<
403 select GENERIC_LIB_ASHRDI3 <<
404 select GENERIC_LIB_LSHRDI3 <<
405 select GENERIC_LIB_UCMPDI2 <<
406 <<
407 config ARCH_RV64I <<
408 bool "RV64I" <<
409 select 64BIT <<
410 select ARCH_SUPPORTS_INT128 if CC_HAS_ <<
411 select SWIOTLB if MMU <<
412 147
413 endchoice !! 148 config ALPHA_XL
414 !! 149 bool "Alpha-XL"
415 # We must be able to map all physical memory i !! 150 help
416 # is still a bit more efficient when generatin !! 151 XL-233 and XL-266-based Alpha systems.
417 # such that it can only map 2GiB of memory. <<
418 choice <<
419 prompt "Kernel Code Model" <<
420 default CMODEL_MEDLOW if 32BIT <<
421 default CMODEL_MEDANY if 64BIT <<
422 <<
423 config CMODEL_MEDLOW <<
424 bool "medium low code model" <<
425 config CMODEL_MEDANY <<
426 bool "medium any code model" <<
427 endchoice <<
428 <<
429 config MODULE_SECTIONS <<
430 bool <<
431 select HAVE_MOD_ARCH_SPECIFIC <<
432 152
433 config SMP !! 153 config ALPHA_BOOK1
434 bool "Symmetric Multi-Processing" !! 154 bool "AlphaBook1"
435 help 155 help
436 This enables support for systems wit !! 156 Dec AlphaBook1/Burns Alpha-based laptops.
437 you say N here, the kernel will run <<
438 multiprocessor machines, but will us <<
439 multiprocessor machine. If you say Y <<
440 on many, but not all, single process <<
441 processor machine, the kernel will r <<
442 here. <<
443 157
444 If you don't know what to do here, s !! 158 config ALPHA_AVANTI_CH
>> 159 bool "Avanti"
445 160
446 config SCHED_MC !! 161 config ALPHA_CABRIOLET
447 bool "Multi-core scheduler support" !! 162 bool "Cabriolet"
448 depends on SMP <<
449 help 163 help
450 Multi-core scheduler support improve !! 164 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
451 making when dealing with multi-core !! 165 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
452 increased overhead in some places. I !! 166 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
>> 167 Bcache SIMMs. Requires power supply with 3.3V output.
453 168
454 config NR_CPUS !! 169 config ALPHA_DP264
455 int "Maximum number of CPUs (2-512)" !! 170 bool "DP264"
456 depends on SMP !! 171 help
457 range 2 512 if !RISCV_SBI_V01 !! 172 Various 21264 systems with the tsunami core logic chipset.
458 range 2 32 if RISCV_SBI_V01 && 32BIT !! 173 API Networks: 264DP, UP2000(+), CS20;
459 range 2 64 if RISCV_SBI_V01 && 64BIT !! 174 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
460 default "32" if 32BIT <<
461 default "64" if 64BIT <<
462 175
463 config HOTPLUG_CPU !! 176 config ALPHA_EB164
464 bool "Support for hot-pluggable CPUs" !! 177 bool "EB164"
465 depends on SMP <<
466 select GENERIC_IRQ_MIGRATION <<
467 help 178 help
>> 179 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
>> 180 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
>> 181 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
>> 182 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
>> 183 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
>> 184 motherboard. Requires power supply with 3.3V output.
468 185
469 Say Y here to experiment with turnin !! 186 config ALPHA_EB64P_CH
470 can be controlled through /sys/devic !! 187 bool "EB64+"
471 188
472 Say N if you want to disable CPU hot !! 189 config ALPHA_EB66
>> 190 bool "EB66"
>> 191 help
>> 192 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
>> 193 identical to EB64+. Baby PC-AT size. Runs from standard PC power
>> 194 supply. The EB66 schematic was published as a marketing poster
>> 195 advertising the 21066 as "the first microprocessor in the world with
>> 196 embedded PCI".
473 197
474 choice !! 198 config ALPHA_EB66P
475 prompt "CPU Tuning" !! 199 bool "EB66+"
476 default TUNE_GENERIC !! 200 help
>> 201 Later variant of the EB66 board.
477 202
478 config TUNE_GENERIC !! 203 config ALPHA_EIGER
479 bool "generic" !! 204 bool "Eiger"
>> 205 help
>> 206 Apparently an obscure OEM single-board computer based on the
>> 207 Typhoon/Tsunami chipset family. Information on it is scanty.
480 208
481 endchoice !! 209 config ALPHA_JENSEN
>> 210 bool "Jensen"
>> 211 help
>> 212 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
>> 213 of the first-generation Alpha systems. A number of these systems
>> 214 seem to be available on the second- hand market. The Jensen is a
>> 215 floor-standing tower system which originally used a 150MHz 21064 It
>> 216 used programmable logic to interface a 486 EISA I/O bridge to the
>> 217 CPU.
482 218
483 # Common NUMA Features !! 219 config ALPHA_LX164
484 config NUMA !! 220 bool "LX164"
485 bool "NUMA Memory Allocation and Sched <<
486 depends on SMP && MMU <<
487 select ARCH_SUPPORTS_NUMA_BALANCING <<
488 select GENERIC_ARCH_NUMA <<
489 select HAVE_SETUP_PER_CPU_AREA <<
490 select NEED_PER_CPU_EMBED_FIRST_CHUNK <<
491 select NEED_PER_CPU_PAGE_FIRST_CHUNK <<
492 select OF_NUMA <<
493 select USE_PERCPU_NUMA_NODE_ID <<
494 help 221 help
495 Enable NUMA (Non-Uniform Memory Acce !! 222 A technical overview of this board is available at
>> 223 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
496 224
497 The kernel will try to allocate memo !! 225 config ALPHA_LYNX
498 local memory of the CPU and add some !! 226 bool "Lynx"
>> 227 help
>> 228 AlphaServer 2100A-based systems.
499 229
500 config NODES_SHIFT !! 230 config ALPHA_MARVEL
501 int "Maximum NUMA Nodes (as a power of !! 231 bool "Marvel"
502 range 1 10 <<
503 default "2" <<
504 depends on NUMA <<
505 help 232 help
506 Specify the maximum number of NUMA N !! 233 AlphaServer ES47 / ES80 / GS1280 based on EV7.
507 system. Increases memory reserved t <<
508 234
509 config RISCV_ALTERNATIVE !! 235 config ALPHA_MIATA
510 bool !! 236 bool "Miata"
511 depends on !XIP_KERNEL <<
512 help 237 help
513 This Kconfig allows the kernel to au !! 238 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
514 erratum or cpufeature required by th !! 239 or 600au).
515 time. The code patching overhead is <<
516 once at boot and once on each module <<
517 240
518 config RISCV_ALTERNATIVE_EARLY !! 241 config ALPHA_MIKASA
519 bool !! 242 bool "Mikasa"
520 depends on RISCV_ALTERNATIVE <<
521 help 243 help
522 Allows early patching of the kernel !! 244 AlphaServer 1000-based Alpha systems.
523 245
524 config RISCV_ISA_C !! 246 config ALPHA_NAUTILUS
525 bool "Emit compressed instructions whe !! 247 bool "Nautilus"
526 default y <<
527 help 248 help
528 Adds "C" to the ISA subsets that the !! 249 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
529 when building Linux, which results i <<
530 Linux binary. <<
531 250
532 If you don't know what to do here, s !! 251 config ALPHA_NONAME_CH
>> 252 bool "Noname"
533 253
534 config RISCV_ISA_SVNAPOT !! 254 config ALPHA_NORITAKE
535 bool "Svnapot extension support for su !! 255 bool "Noritake"
536 depends on 64BIT && MMU <<
537 depends on RISCV_ALTERNATIVE <<
538 default y <<
539 help 256 help
540 Allow kernel to detect the Svnapot I !! 257 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
541 time and enable its usage. !! 258 systems.
542 259
543 The Svnapot extension is used to mar !! 260 config ALPHA_PC164
544 of contiguous virtual-to-physical tr !! 261 bool "PC164"
545 aligned power-of-2 (NAPOT) granulari <<
546 size. When HUGETLBFS is also selecte <<
547 allocates some memory for each NAPOT <<
548 When optimizing for low memory consu <<
549 the Svnapot extension, it may be bet <<
550 262
551 If you don't know what to do here, s !! 263 config ALPHA_P2K
>> 264 bool "Platform2000"
552 265
553 config RISCV_ISA_SVPBMT !! 266 config ALPHA_RAWHIDE
554 bool "Svpbmt extension support for sup !! 267 bool "Rawhide"
555 depends on 64BIT && MMU <<
556 depends on RISCV_ALTERNATIVE <<
557 default y <<
558 help 268 help
559 Adds support to dynamically detect !! 269 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
560 ISA-extension (Supervisor-mode: pag !! 270 See HOWTO at
561 enable its usage. !! 271 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
562 272
563 The memory type for a page contains !! 273 config ALPHA_RUFFIAN
564 that indicate the cacheability, ide !! 274 bool "Ruffian"
565 properties for access to that page. !! 275 help
566 !! 276 Samsung APC164UX. There is a page on known problems and workarounds
567 The Svpbmt extension is only availa !! 277 at <http://www.alphalinux.org/faq/FAQ-11.html>.
568 278
569 If you don't know what to do here, !! 279 config ALPHA_RX164
>> 280 bool "RX164"
570 281
571 config TOOLCHAIN_HAS_V !! 282 config ALPHA_SX164
572 bool !! 283 bool "SX164"
573 default y <<
574 depends on !64BIT || $(cc-option,-mabi <<
575 depends on !32BIT || $(cc-option,-mabi <<
576 depends on LLD_VERSION >= 140000 || LD <<
577 depends on AS_HAS_OPTION_ARCH <<
578 284
579 config RISCV_ISA_V !! 285 config ALPHA_SABLE
580 bool "VECTOR extension support" !! 286 bool "Sable"
581 depends on TOOLCHAIN_HAS_V <<
582 depends on FPU <<
583 select DYNAMIC_SIGFRAME <<
584 default y <<
585 help 287 help
586 Say N here if you want to disable al !! 288 Digital AlphaServer 2000 and 2100-based systems.
587 in the kernel. <<
588 289
589 If you don't know what to do here, s !! 290 config ALPHA_SHARK
>> 291 bool "Shark"
590 292
591 config RISCV_ISA_V_DEFAULT_ENABLE !! 293 config ALPHA_TAKARA
592 bool "Enable userspace Vector by defau !! 294 bool "Takara"
593 depends on RISCV_ISA_V <<
594 default y <<
595 help 295 help
596 Say Y here if you want to enable Vec !! 296 Alpha 11164-based OEM single-board computer.
597 Otherwise, userspace has to make exp <<
598 Vector, or enable it via the sysctl <<
599 297
600 If you don't know what to do here, s !! 298 config ALPHA_TITAN
601 !! 299 bool "Titan"
602 config RISCV_ISA_V_UCOPY_THRESHOLD <<
603 int "Threshold size for vectorized use <<
604 depends on RISCV_ISA_V <<
605 default 768 <<
606 help 300 help
607 Prefer using vectorized copy_to_user !! 301 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
608 workload size exceeds this value. <<
609 302
610 config RISCV_ISA_V_PREEMPTIVE !! 303 config ALPHA_WILDFIRE
611 bool "Run kernel-mode Vector with kern !! 304 bool "Wildfire"
612 depends on PREEMPTION <<
613 depends on RISCV_ISA_V <<
614 default y <<
615 help 305 help
616 Usually, in-kernel SIMD routines are !! 306 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
617 Functions which envoke long running <<
618 vector unit to prevent blocking othe <<
619 307
620 This config allows kernel to run SIM !! 308 endchoice
621 preemption. Enabling this config wil <<
622 consumption due to the allocation of <<
623 309
624 config RISCV_ISA_ZAWRS !! 310 # clear all implied options (don't want default values for those):
625 bool "Zawrs extension support for more !! 311 # Most of these machines have ISA slots; not exactly sure which don't,
626 depends on RISCV_ALTERNATIVE !! 312 # and this doesn't activate hordes of code, so do it always.
>> 313 config ISA
>> 314 bool
627 default y 315 default y
628 help 316 help
629 The Zawrs extension defines instruct !! 317 Find out whether you have ISA slots on your motherboard. ISA is the
630 which allow a hart to enter a low-po !! 318 name of a bus system, i.e. the way the CPU talks to the other stuff
631 hypervisor while waiting on a store !! 319 inside your box. Other bus systems are PCI, EISA, MicroChannel
632 use of these instructions in the ker !! 320 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
633 detected at boot. !! 321 newer boards don't support it. If you have ISA, say Y, otherwise N.
634 322
635 If you don't know what to do here, s !! 323 config ISA_DMA_API
636 <<
637 config TOOLCHAIN_HAS_ZBB <<
638 bool 324 bool
639 default y 325 default y
640 depends on !64BIT || $(cc-option,-mabi <<
641 depends on !32BIT || $(cc-option,-mabi <<
642 depends on LLD_VERSION >= 150000 || LD <<
643 depends on AS_HAS_OPTION_ARCH <<
644 <<
645 # This symbol indicates that the toolchain sup <<
646 # extensions, including Zvk*, Zvbb, and Zvbc. <<
647 # binutils added all except Zvkb, then added Z <<
648 config TOOLCHAIN_HAS_VECTOR_CRYPTO <<
649 def_bool $(as-instr, .option arch$(com <<
650 depends on AS_HAS_OPTION_ARCH <<
651 326
652 config RISCV_ISA_ZBA !! 327 config PCI
653 bool "Zba extension support for bit ma !! 328 bool
>> 329 depends on !ALPHA_JENSEN
>> 330 select GENERIC_PCI_IOMAP
654 default y 331 default y
655 help 332 help
656 Add support for enabling optimisati !! 333 Find out whether you have a PCI motherboard. PCI is the name of a
657 extension is detected at boot. !! 334 bus system, i.e. the way the CPU talks to the other stuff inside
>> 335 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
>> 336 VESA. If you have PCI, say Y, otherwise N.
>> 337
>> 338 config PCI_DOMAINS
>> 339 bool
>> 340 default y
658 341
659 The Zba extension provides instruct !! 342 config PCI_SYSCALL
660 of addresses that index into arrays !! 343 def_bool PCI
661 344
662 If you don't know what to do here, !! 345 config IOMMU_HELPER
>> 346 def_bool PCI
663 347
664 config RISCV_ISA_ZBB !! 348 config ALPHA_NONAME
665 bool "Zbb extension support for bit ma !! 349 bool
666 depends on TOOLCHAIN_HAS_ZBB !! 350 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
667 depends on RISCV_ALTERNATIVE <<
668 default y 351 default y
669 help 352 help
670 Adds support to dynamically detect !! 353 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
671 extension (basic bit manipulation) !! 354 UDB). This design was produced by Digital's Technical OEM (TOEM)
672 !! 355 group. It uses the 21066 processor running at 166MHz or 233MHz. It
673 The Zbb extension provides instruct !! 356 is a baby-AT size, and runs from a standard PC power supply. It has
674 of bit-specific operations (count b !! 357 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
675 bitrotation, etc). !! 358 2 versions, with either PS/2 or large DIN connectors for the
>> 359 keyboard.
676 360
677 If you don't know what to do here, !! 361 config ALPHA_EV4
>> 362 bool
>> 363 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
>> 364 default y if !ALPHA_LYNX
678 365
679 config TOOLCHAIN_HAS_ZBC !! 366 config ALPHA_LCA
680 bool 367 bool
>> 368 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
681 default y 369 default y
682 depends on !64BIT || $(cc-option,-mabi <<
683 depends on !32BIT || $(cc-option,-mabi <<
684 depends on LLD_VERSION >= 150000 || LD <<
685 depends on AS_HAS_OPTION_ARCH <<
686 370
687 config RISCV_ISA_ZBC !! 371 config ALPHA_APECS
688 bool "Zbc extension support for carry- !! 372 bool
689 depends on TOOLCHAIN_HAS_ZBC !! 373 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
690 depends on MMU <<
691 depends on RISCV_ALTERNATIVE <<
692 default y 374 default y
693 help <<
694 Adds support to dynamically detect <<
695 extension (carry-less multiplicatio <<
696 375
697 The Zbc extension could accelerate !! 376 config ALPHA_EB64P
698 calculations. !! 377 bool
699 !! 378 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
700 If you don't know what to do here, <<
701 <<
702 config RISCV_ISA_ZICBOM <<
703 bool "Zicbom extension support for non <<
704 depends on MMU <<
705 depends on RISCV_ALTERNATIVE <<
706 default y 379 default y
707 select RISCV_DMA_NONCOHERENT <<
708 select DMA_DIRECT_REMAP <<
709 help 380 help
710 Adds support to dynamically detect !! 381 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
711 extension (Cache Block Management O !! 382 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
712 usage. !! 383 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
>> 384 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
>> 385 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
>> 386 Runs from standard PC power supply.
713 387
714 The Zicbom extension can be used to !! 388 config ALPHA_EV5
715 non-coherent DMA support on devices !! 389 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
>> 390 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
716 391
717 If you don't know what to do here, !! 392 config ALPHA_EV4
>> 393 bool
>> 394 default y if ALPHA_LYNX && !ALPHA_EV5
718 395
719 config RISCV_ISA_ZICBOZ !! 396 config ALPHA_CIA
720 bool "Zicboz extension support for fas !! 397 bool
721 depends on RISCV_ALTERNATIVE !! 398 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
722 default y 399 default y
723 help <<
724 Enable the use of the Zicboz extens <<
725 when available. <<
726 400
727 The Zicboz extension is used for fa !! 401 config ALPHA_EV56
>> 402 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
>> 403 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
728 404
729 If you don't know what to do here, !! 405 config ALPHA_EV56
>> 406 prompt "EV56 CPU (speed >= 333MHz)?"
>> 407 depends on ALPHA_NORITAKE || ALPHA_PRIMO
730 408
731 config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI !! 409 config ALPHA_EV56
732 def_bool y !! 410 prompt "EV56 CPU (speed >= 400MHz)?"
733 # https://sourceware.org/git/?p=binuti !! 411 depends on ALPHA_RAWHIDE
734 # https://gcc.gnu.org/git/?p=gcc.git;a <<
735 depends on AS_IS_GNU && AS_VERSION >= <<
736 help <<
737 Binutils-2.38 and GCC-12.1.0 bumped <<
738 20191213 version, which moves some i <<
739 the Zicsr and Zifencei extensions. T <<
740 Zicsr and Zifencei when binutils >= <<
741 and Zifencei are supported in binuti <<
742 To make life easier, and avoid forci <<
743 newer ISA spec to version 2.2, relax <<
744 For clang < 17 or GCC < 11.3.0, for <<
745 special treatment, this is dealt wit <<
746 412
747 config TOOLCHAIN_NEEDS_OLD_ISA_SPEC !! 413 config ALPHA_PRIMO
748 def_bool y !! 414 bool "EV5 CPU daughtercard (model 5/xxx)?"
749 depends on TOOLCHAIN_NEEDS_EXPLICIT_ZI !! 415 depends on ALPHA_NORITAKE || ALPHA_MIKASA
750 # https://github.com/llvm/llvm-project <<
751 # https://gcc.gnu.org/git/?p=gcc.git;a <<
752 depends on (CC_IS_CLANG && CLANG_VERSI <<
753 help 416 help
754 Certain versions of clang and GCC do !! 417 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
755 -march. This option causes an older <<
756 versions of clang and GCC to be pass <<
757 as passing zicsr and zifencei to -ma <<
758 418
759 config FPU !! 419 config ALPHA_GAMMA
760 bool "FPU support" !! 420 bool "EV5 CPU(s) (model 5/xxx)?"
761 default y !! 421 depends on ALPHA_SABLE
762 help 422 help
763 Say N here if you want to disable al !! 423 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
764 in the kernel. <<
765 424
766 If you don't know what to do here, s !! 425 config ALPHA_GAMMA
>> 426 bool
>> 427 depends on ALPHA_LYNX
>> 428 default y
767 429
768 config IRQ_STACKS !! 430 config ALPHA_T2
769 bool "Independent irq & softirq stacks !! 431 bool
>> 432 depends on ALPHA_SABLE || ALPHA_LYNX
770 default y 433 default y
771 select HAVE_IRQ_EXIT_ON_IRQ_STACK <<
772 select HAVE_SOFTIRQ_ON_OWN_STACK <<
773 help <<
774 Add independent irq & softirq stacks <<
775 overflows. We may save some memory f <<
776 434
777 config THREAD_SIZE_ORDER !! 435 config ALPHA_PYXIS
778 int "Kernel stack size (in power-of-tw !! 436 bool
779 range 0 4 !! 437 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
780 default 1 if 32BIT !! 438 default y
781 default 2 <<
782 help <<
783 Specify the Pages of thread stack si <<
784 affects irq stack size, which is equ <<
785 439
786 config RISCV_MISALIGNED !! 440 config ALPHA_EV6
787 bool 441 bool
788 select SYSCTL_ARCH_UNALIGN_ALLOW !! 442 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
789 help !! 443 default y
790 Embed support for emulating misalign <<
791 444
792 choice !! 445 config ALPHA_TSUNAMI
793 prompt "Unaligned Accesses Support" !! 446 bool
794 default RISCV_PROBE_UNALIGNED_ACCESS !! 447 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
795 help !! 448 default y
796 This determines the level of support <<
797 information is used by the kernel to <<
798 exposed to user space via the hwprob <<
799 probed at boot by default. <<
800 <<
801 config RISCV_PROBE_UNALIGNED_ACCESS <<
802 bool "Probe for hardware unaligned acc <<
803 select RISCV_MISALIGNED <<
804 help <<
805 During boot, the kernel will run a s <<
806 speed of unaligned accesses. This pr <<
807 the speed of unaligned accesses on t <<
808 memory accesses trap into the kernel <<
809 system, the kernel will emulate the <<
810 UABI. <<
811 <<
812 config RISCV_EMULATED_UNALIGNED_ACCESS <<
813 bool "Emulate unaligned access where s <<
814 select RISCV_MISALIGNED <<
815 help <<
816 If unaligned memory accesses trap in <<
817 supported by the system, the kernel <<
818 accesses to preserve the UABI. When <<
819 unaligned accesses, the unaligned ac <<
820 <<
821 config RISCV_SLOW_UNALIGNED_ACCESS <<
822 bool "Assume the system supports slow <<
823 depends on NONPORTABLE <<
824 help <<
825 Assume that the system supports slow <<
826 kernel and userspace programs may no <<
827 that do not support unaligned memory <<
828 <<
829 config RISCV_EFFICIENT_UNALIGNED_ACCESS <<
830 bool "Assume the system supports fast <<
831 depends on NONPORTABLE <<
832 select DCACHE_WORD_ACCESS if MMU <<
833 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
834 help <<
835 Assume that the system supports fast <<
836 enabled, this option improves the pe <<
837 systems. However, the kernel and use <<
838 slowly, or will not be able to run a <<
839 support efficient unaligned memory a <<
840 449
841 endchoice !! 450 config ALPHA_EV67
>> 451 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
>> 452 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
>> 453 help
>> 454 Is this a machine based on the EV67 core? If in doubt, select N here
>> 455 and the machine will be treated as an EV6.
842 456
843 source "arch/riscv/Kconfig.vendor" !! 457 config ALPHA_MCPCIA
>> 458 bool
>> 459 depends on ALPHA_RAWHIDE
>> 460 default y
844 461
845 endmenu # "Platform type" !! 462 config ALPHA_POLARIS
>> 463 bool
>> 464 depends on ALPHA_RX164
>> 465 default y
846 466
847 menu "Kernel features" !! 467 config ALPHA_IRONGATE
>> 468 bool
>> 469 depends on ALPHA_NAUTILUS
>> 470 default y
848 471
849 source "kernel/Kconfig.hz" !! 472 config GENERIC_HWEIGHT
>> 473 bool
>> 474 default y if !ALPHA_EV67
850 475
851 config RISCV_SBI_V01 !! 476 config ALPHA_AVANTI
852 bool "SBI v0.1 support" !! 477 bool
853 depends on RISCV_SBI !! 478 depends on ALPHA_XL || ALPHA_AVANTI_CH
>> 479 default y
854 help 480 help
855 This config allows kernel to use SBI !! 481 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
856 deprecated in future once legacy M-m !! 482 Alphas. Info at
>> 483 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
857 484
858 config RISCV_BOOT_SPINWAIT !! 485 config ALPHA_BROKEN_IRQ_MASK
859 bool "Spinwait booting method" !! 486 bool
860 depends on SMP !! 487 depends on ALPHA_GENERIC || ALPHA_PC164
861 default y if RISCV_SBI_V01 || RISCV_M_ !! 488 default y
>> 489
>> 490 config VGA_HOSE
>> 491 bool
>> 492 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
>> 493 default y
862 help 494 help
863 This enables support for booting Lin !! 495 Support VGA on an arbitrary hose; needed for several platforms
864 spinwait method, all cores randomly !! 496 which always have multiple hoses, and whose consoles support it.
865 gets chosen via lottery and all othe <<
866 variable. This method cannot support <<
867 scheme. It should be only enabled fo <<
868 on older firmware without SBI HSM ex <<
869 rely on ordered booting via SBI HSM <<
870 dynamically at runtime if the firmwa <<
871 <<
872 Since spinwait is incompatible with <<
873 NR_CPUS be large enough to contain t <<
874 hart to enter Linux. <<
875 497
876 If unsure what to do here, say N. <<
877 498
878 config ARCH_SUPPORTS_KEXEC !! 499 config ALPHA_QEMU
879 def_bool y !! 500 bool "Run under QEMU emulation"
>> 501 depends on !ALPHA_GENERIC
>> 502 ---help---
>> 503 Assume the presence of special features supported by QEMU PALcode
>> 504 that reduce the overhead of system emulation.
880 505
881 config ARCH_SELECTS_KEXEC !! 506 Generic kernels will auto-detect QEMU. But when building a
882 def_bool y !! 507 system-specific kernel, the assumption is that we want to
883 depends on KEXEC !! 508 elimiate as many runtime tests as possible.
884 select HOTPLUG_CPU if SMP <<
885 509
886 config ARCH_SUPPORTS_KEXEC_FILE !! 510 If unsure, say N.
887 def_bool 64BIT <<
888 511
889 config ARCH_SELECTS_KEXEC_FILE <<
890 def_bool y <<
891 depends on KEXEC_FILE <<
892 select HAVE_IMA_KEXEC if IMA <<
893 select KEXEC_ELF <<
894 512
895 config ARCH_SUPPORTS_KEXEC_PURGATORY !! 513 config ALPHA_SRM
896 def_bool ARCH_SUPPORTS_KEXEC_FILE !! 514 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
>> 515 depends on TTY
>> 516 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
>> 517 ---help---
>> 518 There are two different types of booting firmware on Alphas: SRM,
>> 519 which is command line driven, and ARC, which uses menus and arrow
>> 520 keys. Details about the Linux/Alpha booting process are contained in
>> 521 the Linux/Alpha FAQ, accessible on the WWW from
>> 522 <http://www.alphalinux.org/>.
>> 523
>> 524 The usual way to load Linux on an Alpha machine is to use MILO
>> 525 (a bootloader that lets you pass command line parameters to the
>> 526 kernel just like lilo does for the x86 architecture) which can be
>> 527 loaded either from ARC or can be installed directly as a permanent
>> 528 firmware replacement from floppy (which requires changing a certain
>> 529 jumper on the motherboard). If you want to do either of these, say N
>> 530 here. If MILO doesn't work on your system (true for Jensen
>> 531 motherboards), you can bypass it altogether and boot Linux directly
>> 532 from an SRM console; say Y here in order to do that. Note that you
>> 533 won't be able to boot from an IDE disk using SRM.
897 534
898 config ARCH_SUPPORTS_CRASH_DUMP !! 535 If unsure, say N.
899 def_bool y <<
900 536
901 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 537 config EISA
902 def_bool CRASH_RESERVE !! 538 bool
>> 539 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
>> 540 default y
903 541
904 config COMPAT !! 542 config ARCH_MAY_HAVE_PC_FDC
905 bool "Kernel support for 32-bit U-mode !! 543 def_bool y
906 default 64BIT <<
907 depends on 64BIT && MMU <<
908 help <<
909 This option enables support for a 32 <<
910 kernel at S-mode. riscv32-specific c <<
911 the user helper functions (vdso), si <<
912 ptrace interface are handled appropr <<
913 <<
914 If you want to execute 32-bit usersp <<
915 <<
916 config PARAVIRT <<
917 bool "Enable paravirtualization code" <<
918 depends on RISCV_SBI <<
919 help <<
920 This changes the kernel so it can mo <<
921 under a hypervisor, potentially impr <<
922 over full virtualization. <<
923 <<
924 config PARAVIRT_TIME_ACCOUNTING <<
925 bool "Paravirtual steal time accountin <<
926 depends on PARAVIRT <<
927 help <<
928 Select this option to enable fine gr <<
929 accounting. Time spent executing oth <<
930 the current vCPU is discounted from <<
931 that, there can be a small performan <<
932 <<
933 If in doubt, say N here. <<
934 <<
935 config RELOCATABLE <<
936 bool "Build a relocatable kernel" <<
937 depends on MMU && 64BIT && !XIP_KERNEL <<
938 select MODULE_SECTIONS if MODULES <<
939 help <<
940 This builds a kernel as a Position I <<
941 which retains all relocation metadat <<
942 kernel binary at runtime to a differ <<
943 address it was linked at. <<
944 Since RISCV uses the RELA relocation <<
945 relocation pass at runtime even if t <<
946 same address it was linked at. <<
947 <<
948 If unsure, say N. <<
949 <<
950 config RANDOMIZE_BASE <<
951 bool "Randomize the address of the ker <<
952 select RELOCATABLE <<
953 depends on MMU && 64BIT && !XIP_KERNEL <<
954 help <<
955 Randomizes the virtual address at wh <<
956 loaded, as a security feature that d <<
957 relying on knowledge of the location <<
958 <<
959 It is the bootloader's job to provid <<
960 random u64 value in /chosen/kaslr-se <<
961 <<
962 When booting via the UEFI stub, it w <<
963 EFI_RNG_PROTOCOL implementation (if <<
964 to the kernel proper. In addition, i <<
965 location of the kernel Image as well <<
966 <<
967 If unsure, say N. <<
968 <<
969 endmenu # "Kernel features" <<
970 <<
971 menu "Boot options" <<
972 <<
973 config CMDLINE <<
974 string "Built-in kernel command line" <<
975 help <<
976 For most platforms, the arguments fo <<
977 are provided at run-time, during boo <<
978 where either no arguments are being <<
979 arguments are insufficient or even i <<
980 544
981 When that occurs, it is possible to !! 545 config SMP
982 line here and choose how the kernel !! 546 bool "Symmetric multi-processing support"
>> 547 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
>> 548 ---help---
>> 549 This enables support for systems with more than one CPU. If you have
>> 550 a system with only one CPU, say N. If you have a system with more
>> 551 than one CPU, say Y.
>> 552
>> 553 If you say N here, the kernel will run on uni- and multiprocessor
>> 554 machines, but will use only one CPU of a multiprocessor machine. If
>> 555 you say Y here, the kernel will run on many, but not all,
>> 556 uniprocessor machines. On a uniprocessor machine, the kernel
>> 557 will run faster if you say N here.
983 558
984 choice !! 559 See also the SMP-HOWTO available at
985 prompt "Built-in command line usage" !! 560 <http://www.tldp.org/docs.html#howto>.
986 depends on CMDLINE != "" <<
987 default CMDLINE_FALLBACK <<
988 help <<
989 Choose how the kernel will handle th <<
990 line. <<
991 <<
992 config CMDLINE_FALLBACK <<
993 bool "Use bootloader kernel arguments <<
994 help <<
995 Use the built-in command line as fal <<
996 during boot. This is the default beh <<
997 <<
998 config CMDLINE_EXTEND <<
999 bool "Extend bootloader kernel argumen <<
1000 help <<
1001 The command-line arguments provided <<
1002 appended to the built-in command li <<
1003 cases where the provided arguments <<
1004 you don't want to or cannot modify <<
1005 <<
1006 config CMDLINE_FORCE <<
1007 bool "Always use the default kernel c <<
1008 help <<
1009 Always use the built-in command lin <<
1010 boot. This is useful in case you ne <<
1011 command line on systems where you d <<
1012 over it. <<
1013 561
1014 endchoice !! 562 If you don't know what to do here, say N.
1015 563
1016 config EFI_STUB !! 564 config HAVE_DEC_LOCK
1017 bool 565 bool
1018 !! 566 depends on SMP
1019 config EFI <<
1020 bool "UEFI runtime support" <<
1021 depends on OF && !XIP_KERNEL <<
1022 depends on MMU <<
1023 default y 567 default y
1024 select ARCH_SUPPORTS_ACPI if 64BIT !! 568
1025 select EFI_GENERIC_STUB !! 569 config NR_CPUS
1026 select EFI_PARAMS_FROM_FDT !! 570 int "Maximum number of CPUs (2-32)"
1027 select EFI_RUNTIME_WRAPPERS !! 571 range 2 32
1028 select EFI_STUB !! 572 depends on SMP
1029 select LIBFDT !! 573 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
1030 select RISCV_ISA_C !! 574 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
1031 select UCS2_STRING <<
1032 help 575 help
1033 This option provides support for ru !! 576 MARVEL support can handle a maximum of 32 CPUs, all the others
1034 by UEFI firmware (such as non-volat !! 577 with working support have a maximum of 4 CPUs.
1035 clock, and platform reset). A UEFI <<
1036 allow the kernel to be booted as an <<
1037 is only useful on systems that have <<
1038 578
1039 config DMI !! 579 config ARCH_DISCONTIGMEM_ENABLE
1040 bool "Enable support for SMBIOS (DMI) !! 580 bool "Discontiguous Memory Support"
1041 depends on EFI <<
1042 default y <<
1043 help 581 help
1044 This enables SMBIOS/DMI feature for !! 582 Say Y to support efficient handling of discontiguous physical memory,
>> 583 for architectures which are either NUMA (Non-Uniform Memory Access)
>> 584 or have huge holes in the physical address space for other reasons.
>> 585 See <file:Documentation/vm/numa> for more.
1045 586
1046 This option is only useful on syste !! 587 source "mm/Kconfig"
1047 However, even with this option, the <<
1048 continue to boot on existing non-UE <<
1049 588
1050 config CC_HAVE_STACKPROTECTOR_TLS !! 589 config NUMA
1051 def_bool $(cc-option,-mstack-protecto !! 590 bool "NUMA Support (EXPERIMENTAL)"
>> 591 depends on DISCONTIGMEM && BROKEN
>> 592 help
>> 593 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
>> 594 Access). This option is for configuring high-end multiprocessor
>> 595 server machines. If in doubt, say N.
>> 596
>> 597 config ALPHA_WTINT
>> 598 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
>> 599 default y if ALPHA_QEMU
>> 600 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
>> 601 default n if !ALPHA_SRM && !ALPHA_GENERIC
>> 602 default y if SMP
>> 603 ---help---
>> 604 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
>> 605 to sleep until the next interrupt. This may reduce the power
>> 606 consumed, and the heat produced by the computer. However, it has
>> 607 the side effect of making the cycle counter unreliable as a timing
>> 608 device across the sleep.
1052 609
1053 config STACKPROTECTOR_PER_TASK !! 610 For emulation under QEMU, definitely say Y here, as we have other
1054 def_bool y !! 611 mechanisms for measuring time than the cycle counter.
1055 depends on !RANDSTRUCT <<
1056 depends on STACKPROTECTOR && CC_HAVE_ <<
1057 612
1058 config PHYS_RAM_BASE_FIXED !! 613 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
1059 bool "Explicitly specified physical R !! 614 MILO, sleep mode is not supported so you might as well say N here.
1060 depends on NONPORTABLE <<
1061 default n <<
1062 615
1063 config PHYS_RAM_BASE !! 616 For SMP systems we cannot use the cycle counter for timing anyway,
1064 hex "Platform Physical RAM address" !! 617 so you might as well say Y here.
1065 depends on PHYS_RAM_BASE_FIXED <<
1066 default "0x80000000" <<
1067 help <<
1068 This is the physical address of RAM <<
1069 explicitly specified to run early r <<
1070 from flash to RAM. <<
1071 <<
1072 config XIP_KERNEL <<
1073 bool "Kernel Execute-In-Place from RO <<
1074 depends on MMU && SPARSEMEM && NONPOR <<
1075 # This prevents XIP from being enable <<
1076 # fail to build since XIP doesn't sup <<
1077 depends on !COMPILE_TEST <<
1078 select PHYS_RAM_BASE_FIXED <<
1079 help <<
1080 Execute-In-Place allows the kernel <<
1081 directly addressable by the CPU, su <<
1082 space since the text section of the <<
1083 to RAM. Read-write sections, such <<
1084 are still copied to RAM. The XIP k <<
1085 it has to run directly from flash, <<
1086 store it. The flash address used t <<
1087 and for storing it, is configuratio <<
1088 say Y here, you must know the prope <<
1089 store the kernel image depending on <<
1090 <<
1091 Also note that the make target beco <<
1092 "make zImage" or "make Image". The <<
1093 ROM memory will be arch/riscv/boot/ <<
1094 <<
1095 SPARSEMEM is required because the k <<
1096 flash resident are not backed by me <<
1097 a struct page on those regions will <<
1098 618
1099 If unsure, say N. 619 If unsure, say N.
1100 620
1101 config XIP_PHYS_ADDR !! 621 config NODES_SHIFT
1102 hex "XIP Kernel Physical Location" !! 622 int
1103 depends on XIP_KERNEL !! 623 default "7"
1104 default "0x21000000" !! 624 depends on NEED_MULTIPLE_NODES
1105 help <<
1106 This is the physical address in you <<
1107 be linked for and stored to. This <<
1108 own flash usage. <<
1109 <<
1110 config RISCV_ISA_FALLBACK <<
1111 bool "Permit falling back to parsing <<
1112 default y <<
1113 help <<
1114 Parsing the "riscv,isa" devicetree <<
1115 replaced by a list of explicitly de <<
1116 with existing platforms, the kernel <<
1117 "riscv,isa" property if the replace <<
1118 <<
1119 Selecting N here will result in a k <<
1120 fallback, unless the commandline "r <<
1121 present. <<
1122 <<
1123 Please see the dt-binding, located <<
1124 Documentation/devicetree/bindings/r <<
1125 on the replacement properties, "ris <<
1126 "riscv,isa-extensions". <<
1127 <<
1128 config BUILTIN_DTB <<
1129 bool "Built-in device tree" <<
1130 depends on OF && NONPORTABLE <<
1131 help <<
1132 Build a device tree into the Linux <<
1133 This option should be selected if n <<
1134 If unsure, say N. <<
1135 625
>> 626 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
>> 627 config ALPHA_LARGE_VMALLOC
>> 628 bool
>> 629 ---help---
>> 630 Process creation and other aspects of virtual memory management can
>> 631 be streamlined if we restrict the kernel to one PGD for all vmalloc
>> 632 allocations. This equates to about 8GB.
>> 633
>> 634 Under normal circumstances, this is so far and above what is needed
>> 635 as to be laughable. However, there are certain applications (such
>> 636 as benchmark-grade in-kernel web serving) that can make use of as
>> 637 much vmalloc space as is available.
>> 638
>> 639 Say N unless you know you need gobs and gobs of vmalloc space.
>> 640
>> 641 config VERBOSE_MCHECK
>> 642 bool "Verbose Machine Checks"
>> 643
>> 644 config VERBOSE_MCHECK_ON
>> 645 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
>> 646 depends on VERBOSE_MCHECK
>> 647 default 1
>> 648 ---help---
>> 649 This option allows the default printing mode to be set, and then
>> 650 possibly overridden by a boot command argument.
>> 651
>> 652 For example, if one wanted the option of printing verbose
>> 653 machine checks, but wanted the default to be as if verbose
>> 654 machine check printing was turned off, then one would choose
>> 655 the printing mode to be 0. Then, upon reboot, one could add
>> 656 the boot command line "verbose_mcheck=1" to get the normal
>> 657 verbose machine check printing, or "verbose_mcheck=2" to get
>> 658 the maximum information available.
1136 659
1137 config BUILTIN_DTB_SOURCE !! 660 Take the default (1) unless you want more control or more info.
1138 string "Built-in device tree source" <<
1139 depends on BUILTIN_DTB <<
1140 help <<
1141 DTS file path (without suffix, rela <<
1142 for the DTS file that will be used <<
1143 kernel. <<
1144 661
1145 endmenu # "Boot options" !! 662 choice
>> 663 prompt "Timer interrupt frequency (HZ)?"
>> 664 default HZ_128 if ALPHA_QEMU
>> 665 default HZ_1200 if ALPHA_RAWHIDE
>> 666 default HZ_1024
>> 667 ---help---
>> 668 The frequency at which timer interrupts occur. A high frequency
>> 669 minimizes latency, whereas a low frequency minimizes overhead of
>> 670 process accounting. The later effect is especially significant
>> 671 when being run under QEMU.
>> 672
>> 673 Note that some Alpha hardware cannot change the interrupt frequency
>> 674 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
>> 675
>> 676 config HZ_32
>> 677 bool "32 Hz"
>> 678 config HZ_64
>> 679 bool "64 Hz"
>> 680 config HZ_128
>> 681 bool "128 Hz"
>> 682 config HZ_256
>> 683 bool "256 Hz"
>> 684 config HZ_1024
>> 685 bool "1024 Hz"
>> 686 config HZ_1200
>> 687 bool "1200 Hz"
>> 688 endchoice
1146 689
1147 config PORTABLE !! 690 config HZ
1148 bool !! 691 int
1149 default !NONPORTABLE !! 692 default 32 if HZ_32
1150 select EFI !! 693 default 64 if HZ_64
1151 select MMU !! 694 default 128 if HZ_128
1152 select OF !! 695 default 256 if HZ_256
>> 696 default 1200 if HZ_1200
>> 697 default 1024
1153 698
1154 config ARCH_PROC_KCORE_TEXT !! 699 source "drivers/pci/Kconfig"
1155 def_bool y !! 700 source "drivers/eisa/Kconfig"
1156 701
1157 menu "Power management options" !! 702 source "drivers/pcmcia/Kconfig"
1158 703
1159 source "kernel/power/Kconfig" !! 704 config SRM_ENV
>> 705 tristate "SRM environment through procfs"
>> 706 depends on PROC_FS
>> 707 ---help---
>> 708 If you enable this option, a subdirectory inside /proc called
>> 709 /proc/srm_environment will give you access to the all important
>> 710 SRM environment variables (those which have a name) and also
>> 711 to all others (by their internal number).
1160 712
1161 config ARCH_HIBERNATION_POSSIBLE !! 713 SRM is something like a BIOS for Alpha machines. There are some
1162 def_bool y !! 714 other such BIOSes, like AlphaBIOS, which this driver cannot
>> 715 support (hey, that's not SRM!).
1163 716
1164 config ARCH_HIBERNATION_HEADER !! 717 Despite the fact that this driver doesn't work on all Alphas (but
1165 def_bool HIBERNATION !! 718 only on those which have SRM as their firmware), it's save to
>> 719 build it even if your particular machine doesn't know about SRM
>> 720 (or if you intend to compile a generic kernel). It will simply
>> 721 not create those subdirectory in /proc (and give you some warning,
>> 722 of course).
1166 723
1167 config ARCH_SUSPEND_POSSIBLE !! 724 This driver is also available as a module and will be called
1168 def_bool y !! 725 srm_env then.
1169 726
1170 endmenu # "Power management options" !! 727 source "fs/Kconfig.binfmt"
1171 728
1172 menu "CPU Power Management" !! 729 endmenu
1173 730
1174 source "drivers/cpuidle/Kconfig" !! 731 source "net/Kconfig"
>> 732
>> 733 source "drivers/Kconfig"
>> 734
>> 735 source "fs/Kconfig"
>> 736
>> 737 source "arch/alpha/Kconfig.debug"
>> 738
>> 739 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
>> 740 # but we also need it if VGA_HOSE is set
>> 741 config DUMMY_CONSOLE
>> 742 bool
>> 743 depends on VGA_HOSE
>> 744 default y
1175 745
1176 source "drivers/cpufreq/Kconfig" !! 746 source "security/Kconfig"
1177 747
1178 endmenu # "CPU Power Management" !! 748 source "crypto/Kconfig"
1179 749
1180 source "arch/riscv/kvm/Kconfig" !! 750 source "lib/Kconfig"
1181 751
1182 source "drivers/acpi/Kconfig" <<
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.