1 # SPDX-License-Identifier: GPL-2.0-only <<
2 # 1 #
3 # For a description of the syntax of this conf 2 # For a description of the syntax of this configuration file,
4 # see Documentation/kbuild/kconfig-language.rs !! 3 # see Documentation/kbuild/kconfig-language.txt.
5 # 4 #
6 !! 5 config ALPHA
7 config 64BIT <<
8 bool <<
9 <<
10 config 32BIT <<
11 bool 6 bool
>> 7 default y
>> 8 select HAVE_AOUT
>> 9 select HAVE_IDE
>> 10 select HAVE_OPROFILE
>> 11 select HAVE_SYSCALL_WRAPPERS
>> 12 help
>> 13 The Alpha is a 64-bit general-purpose processor designed and
>> 14 marketed by the Digital Equipment Corporation of blessed memory,
>> 15 now Hewlett-Packard. The Alpha Linux project has a home page at
>> 16 <http://www.alphalinux.org/>.
12 17
13 config RISCV !! 18 config 64BIT
14 def_bool y <<
15 select ACPI_GENERIC_GSI if ACPI <<
16 select ACPI_MCFG if (ACPI && PCI) <<
17 select ACPI_PPTT if ACPI <<
18 select ACPI_REDUCED_HARDWARE_ONLY if A <<
19 select ACPI_SPCR_TABLE if ACPI <<
20 select ARCH_DMA_DEFAULT_COHERENT <<
21 select ARCH_ENABLE_HUGEPAGE_MIGRATION <<
22 select ARCH_ENABLE_MEMORY_HOTPLUG if S <<
23 select ARCH_ENABLE_MEMORY_HOTREMOVE if <<
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 <<
108 select GENERIC_IRQ_SHOW_LEVEL <<
109 select GENERIC_LIB_DEVMEM_IS_ALLOWED <<
110 select GENERIC_PCI_IOMAP <<
111 select GENERIC_PTDUMP if MMU <<
112 select GENERIC_SCHED_CLOCK <<
113 select GENERIC_SMP_IDLE_THREAD <<
114 select GENERIC_TIME_VSYSCALL if MMU && <<
115 select GENERIC_VDSO_TIME_NS if HAVE_GE <<
116 select HARDIRQS_SW_RESEND <<
117 select HAS_IOPORT if MMU <<
118 select HAVE_ARCH_AUDITSYSCALL <<
119 select HAVE_ARCH_HUGE_VMALLOC if HAVE_ <<
120 select HAVE_ARCH_HUGE_VMAP if MMU && 6 <<
121 select HAVE_ARCH_JUMP_LABEL if !XIP_KE <<
122 select HAVE_ARCH_JUMP_LABEL_RELATIVE i <<
123 select HAVE_ARCH_KASAN if MMU && 64BIT <<
124 select HAVE_ARCH_KASAN_VMALLOC if MMU <<
125 select HAVE_ARCH_KFENCE if MMU && 64BI <<
126 select HAVE_ARCH_KGDB if !XIP_KERNEL <<
127 select HAVE_ARCH_KGDB_QXFER_PKT <<
128 select HAVE_ARCH_MMAP_RND_BITS if MMU <<
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 <<
238 # https://github.com/llvm/llvm-project/commit/ <<
239 config ARCH_HAS_BROKEN_DWARF5 <<
240 def_bool y 19 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 20
251 config ARCH_MMAP_RND_COMPAT_BITS_MIN !! 21 config MMU
252 default 8 !! 22 bool
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 <<
260 config ARCH_MMAP_RND_COMPAT_BITS_MAX <<
261 default 17 <<
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 23 default y
268 help <<
269 Select this option if you want to ru <<
270 without the assistance of any other <<
271 24
272 # set if we are running in S-mode and can use !! 25 config RWSEM_GENERIC_SPINLOCK
273 config RISCV_SBI <<
274 bool 26 bool
275 depends on !RISCV_M_MODE <<
276 default y <<
277 27
278 config MMU !! 28 config RWSEM_XCHGADD_ALGORITHM
279 bool "MMU-based Paged Memory Managemen !! 29 bool
280 default y 30 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 31
298 config ARCH_FLATMEM_ENABLE !! 32 config ARCH_HAS_ILOG2_U32
299 def_bool !NUMA !! 33 bool
300 !! 34 default n
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 <<
310 config ARCH_SUPPORTS_UPROBES <<
311 def_bool y <<
312 <<
313 config STACKTRACE_SUPPORT <<
314 def_bool y <<
315 35
316 config GENERIC_BUG !! 36 config ARCH_HAS_ILOG2_U64
317 def_bool y !! 37 bool
318 depends on BUG !! 38 default n
319 select GENERIC_BUG_RELATIVE_POINTERS i <<
320 39
321 config GENERIC_BUG_RELATIVE_POINTERS !! 40 config GENERIC_FIND_NEXT_BIT
322 bool 41 bool
>> 42 default y
323 43
324 config GENERIC_CALIBRATE_DELAY 44 config GENERIC_CALIBRATE_DELAY
325 def_bool y !! 45 bool
>> 46 default y
326 47
327 config GENERIC_CSUM !! 48 config GENERIC_TIME
328 def_bool y !! 49 bool
>> 50 default y
329 51
330 config GENERIC_HWEIGHT !! 52 config ARCH_USES_GETTIMEOFFSET
331 def_bool y !! 53 bool
>> 54 default y
332 55
333 config FIX_EARLYCON_MEM !! 56 config ZONE_DMA
334 def_bool MMU !! 57 bool
>> 58 default y
335 59
336 config ILLEGAL_POINTER_VALUE !! 60 config GENERIC_ISA_DMA
337 hex !! 61 bool
338 default 0 if 32BIT !! 62 default y
339 default 0xdead000000000000 if 64BIT <<
340 63
341 config PGTABLE_LEVELS !! 64 config GENERIC_IOMAP
342 int !! 65 bool
343 default 5 if 64BIT !! 66 default n
344 default 2 <<
345 67
346 config LOCKDEP_SUPPORT !! 68 config GENERIC_HARDIRQS
347 def_bool y !! 69 bool
>> 70 default y
348 71
349 config RISCV_DMA_NONCOHERENT !! 72 config GENERIC_IRQ_PROBE
350 bool 73 bool
351 select ARCH_HAS_DMA_PREP_COHERENT !! 74 default y
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 75
357 config RISCV_NONSTANDARD_CACHE_OPS !! 76 config AUTO_IRQ_AFFINITY
358 bool 77 bool
359 help !! 78 depends on SMP
360 This enables function pointer suppor !! 79 default y
361 systems to handle cache management. <<
362 80
363 config AS_HAS_INSN !! 81 source "init/Kconfig"
364 def_bool $(as-instr,.insn r 51$(comma) !! 82 source "kernel/Kconfig.freezer"
365 83
366 config AS_HAS_OPTION_ARCH <<
367 # https://github.com/llvm/llvm-project <<
368 def_bool y <<
369 depends on $(as-instr, .option arch$(c <<
370 84
371 source "arch/riscv/Kconfig.socs" !! 85 menu "System setup"
372 source "arch/riscv/Kconfig.errata" <<
373 86
374 menu "Platform type" !! 87 choice
>> 88 prompt "Alpha system type"
>> 89 default ALPHA_GENERIC
>> 90 ---help---
>> 91 This is the system type of your hardware. A "generic" kernel will
>> 92 run on any supported Alpha system. However, if you configure a
>> 93 kernel for your specific system, it will be faster and smaller.
375 94
376 config NONPORTABLE !! 95 To find out what type of Alpha system you have, you may want to
377 bool "Allow configurations that result !! 96 check out the Linux/Alpha FAQ, accessible on the WWW from
378 help !! 97 <http://www.alphalinux.org/>. In summary:
379 RISC-V kernel binaries are compatibl <<
380 whenever possible, but there are som <<
381 satisfied by configurations that res <<
382 not portable between systems. <<
383 98
384 Selecting N does not guarantee kerne !! 99 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
385 systems. Selecting any of the optio !! 100 Alpha-XL XL-233, XL-266
386 result in kernel binaries that are u !! 101 AlphaBook1 Alpha laptop
387 systems. !! 102 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
>> 103 Cabriolet AlphaPC64, AlphaPCI64
>> 104 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
>> 105 EB164 EB164 21164 evaluation board
>> 106 EB64+ EB64+ 21064 evaluation board
>> 107 EB66 EB66 21066 evaluation board
>> 108 EB66+ EB66+ 21066 evaluation board
>> 109 Jensen DECpc 150, DEC 2000 models 300, 500
>> 110 LX164 AlphaPC164-LX
>> 111 Lynx AS 2100A
>> 112 Miata Personal Workstation 433/500/600 a/au
>> 113 Marvel AlphaServer ES47 / ES80 / GS1280
>> 114 Mikasa AS 1000
>> 115 Noname AXPpci33, UDB (Multia)
>> 116 Noritake AS 1000A, AS 600A, AS 800
>> 117 PC164 AlphaPC164
>> 118 Rawhide AS 1200, AS 4000, AS 4100
>> 119 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
>> 120 SX164 AlphaPC164-SX
>> 121 Sable AS 2000, AS 2100
>> 122 Shark DS 20L
>> 123 Takara Takara (OEM)
>> 124 Titan AlphaServer ES45 / DS25 / DS15
>> 125 Wildfire AlphaServer GS 40/80/160/320
388 126
389 If unsure, say N. !! 127 If you don't know what to do, choose "generic".
390 128
391 choice !! 129 config ALPHA_GENERIC
392 prompt "Base ISA" !! 130 bool "Generic"
393 default ARCH_RV64I <<
394 help 131 help
395 This selects the base ISA that this !! 132 A generic kernel will run on all supported Alpha hardware.
396 the target platform. <<
397 <<
398 config ARCH_RV32I <<
399 bool "RV32I" <<
400 depends on NONPORTABLE <<
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 <<
412 133
413 endchoice !! 134 config ALPHA_ALCOR
414 !! 135 bool "Alcor/Alpha-XLT"
415 # We must be able to map all physical memory i !! 136 help
416 # is still a bit more efficient when generatin !! 137 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
417 # such that it can only map 2GiB of memory. !! 138 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
418 choice !! 139 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
419 prompt "Kernel Code Model" !! 140 controller (256-bit memory bus) and a PCI interface. It also does
420 default CMODEL_MEDLOW if 32BIT !! 141 all the work required to support an external Bcache and to maintain
421 default CMODEL_MEDANY if 64BIT !! 142 memory coherence when a PCI device DMAs into (or out of) memory.
422 <<
423 config CMODEL_MEDLOW <<
424 bool "medium low code model" <<
425 config CMODEL_MEDANY <<
426 bool "medium any code model" <<
427 endchoice <<
428 143
429 config MODULE_SECTIONS !! 144 config ALPHA_XL
430 bool !! 145 bool "Alpha-XL"
431 select HAVE_MOD_ARCH_SPECIFIC !! 146 help
>> 147 XL-233 and XL-266-based Alpha systems.
432 148
433 config SMP !! 149 config ALPHA_BOOK1
434 bool "Symmetric Multi-Processing" !! 150 bool "AlphaBook1"
435 help 151 help
436 This enables support for systems wit !! 152 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. <<
443 153
444 If you don't know what to do here, s !! 154 config ALPHA_AVANTI_CH
>> 155 bool "Avanti"
445 156
446 config SCHED_MC !! 157 config ALPHA_CABRIOLET
447 bool "Multi-core scheduler support" !! 158 bool "Cabriolet"
448 depends on SMP <<
449 help 159 help
450 Multi-core scheduler support improve !! 160 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
451 making when dealing with multi-core !! 161 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
452 increased overhead in some places. I !! 162 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
>> 163 Bcache SIMMs. Requires power supply with 3.3V output.
453 164
454 config NR_CPUS !! 165 config ALPHA_DP264
455 int "Maximum number of CPUs (2-512)" !! 166 bool "DP264"
456 depends on SMP !! 167 help
457 range 2 512 if !RISCV_SBI_V01 !! 168 Various 21264 systems with the tsunami core logic chipset.
458 range 2 32 if RISCV_SBI_V01 && 32BIT !! 169 API Networks: 264DP, UP2000(+), CS20;
459 range 2 64 if RISCV_SBI_V01 && 64BIT !! 170 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
460 default "32" if 32BIT <<
461 default "64" if 64BIT <<
462 171
463 config HOTPLUG_CPU !! 172 config ALPHA_EB164
464 bool "Support for hot-pluggable CPUs" !! 173 bool "EB164"
465 depends on SMP <<
466 select GENERIC_IRQ_MIGRATION <<
467 help 174 help
>> 175 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
>> 176 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
>> 177 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
>> 178 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
>> 179 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
>> 180 motherboard. Requires power supply with 3.3V output.
468 181
469 Say Y here to experiment with turnin !! 182 config ALPHA_EB64P_CH
470 can be controlled through /sys/devic !! 183 bool "EB64+"
471 184
472 Say N if you want to disable CPU hot !! 185 config ALPHA_EB66
>> 186 bool "EB66"
>> 187 help
>> 188 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
>> 189 identical to EB64+. Baby PC-AT size. Runs from standard PC power
>> 190 supply. The EB66 schematic was published as a marketing poster
>> 191 advertising the 21066 as "the first microprocessor in the world with
>> 192 embedded PCI".
473 193
474 choice !! 194 config ALPHA_EB66P
475 prompt "CPU Tuning" !! 195 bool "EB66+"
476 default TUNE_GENERIC !! 196 help
>> 197 Later variant of the EB66 board.
477 198
478 config TUNE_GENERIC !! 199 config ALPHA_EIGER
479 bool "generic" !! 200 bool "Eiger"
>> 201 help
>> 202 Apparently an obscure OEM single-board computer based on the
>> 203 Typhoon/Tsunami chipset family. Information on it is scanty.
480 204
481 endchoice !! 205 config ALPHA_JENSEN
>> 206 bool "Jensen"
>> 207 help
>> 208 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
>> 209 of the first-generation Alpha systems. A number of these systems
>> 210 seem to be available on the second- hand market. The Jensen is a
>> 211 floor-standing tower system which originally used a 150MHz 21064 It
>> 212 used programmable logic to interface a 486 EISA I/O bridge to the
>> 213 CPU.
482 214
483 # Common NUMA Features !! 215 config ALPHA_LX164
484 config NUMA !! 216 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 217 help
495 Enable NUMA (Non-Uniform Memory Acce !! 218 A technical overview of this board is available at
>> 219 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
496 220
497 The kernel will try to allocate memo !! 221 config ALPHA_LYNX
498 local memory of the CPU and add some !! 222 bool "Lynx"
>> 223 help
>> 224 AlphaServer 2100A-based systems.
499 225
500 config NODES_SHIFT !! 226 config ALPHA_MARVEL
501 int "Maximum NUMA Nodes (as a power of !! 227 bool "Marvel"
502 range 1 10 <<
503 default "2" <<
504 depends on NUMA <<
505 help 228 help
506 Specify the maximum number of NUMA N !! 229 AlphaServer ES47 / ES80 / GS1280 based on EV7.
507 system. Increases memory reserved t <<
508 230
509 config RISCV_ALTERNATIVE !! 231 config ALPHA_MIATA
510 bool !! 232 bool "Miata"
511 depends on !XIP_KERNEL <<
512 help 233 help
513 This Kconfig allows the kernel to au !! 234 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
514 erratum or cpufeature required by th !! 235 or 600au).
515 time. The code patching overhead is <<
516 once at boot and once on each module <<
517 236
518 config RISCV_ALTERNATIVE_EARLY !! 237 config ALPHA_MIKASA
519 bool !! 238 bool "Mikasa"
520 depends on RISCV_ALTERNATIVE <<
521 help 239 help
522 Allows early patching of the kernel !! 240 AlphaServer 1000-based Alpha systems.
523 241
524 config RISCV_ISA_C !! 242 config ALPHA_NAUTILUS
525 bool "Emit compressed instructions whe !! 243 bool "Nautilus"
526 default y <<
527 help 244 help
528 Adds "C" to the ISA subsets that the !! 245 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
529 when building Linux, which results i <<
530 Linux binary. <<
531 246
532 If you don't know what to do here, s !! 247 config ALPHA_NONAME_CH
>> 248 bool "Noname"
533 249
534 config RISCV_ISA_SVNAPOT !! 250 config ALPHA_NORITAKE
535 bool "Svnapot extension support for su !! 251 bool "Noritake"
536 depends on 64BIT && MMU <<
537 depends on RISCV_ALTERNATIVE <<
538 default y <<
539 help 252 help
540 Allow kernel to detect the Svnapot I !! 253 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
541 time and enable its usage. !! 254 systems.
542 255
543 The Svnapot extension is used to mar !! 256 config ALPHA_PC164
544 of contiguous virtual-to-physical tr !! 257 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 <<
550 258
551 If you don't know what to do here, s !! 259 config ALPHA_P2K
>> 260 bool "Platform2000"
552 261
553 config RISCV_ISA_SVPBMT !! 262 config ALPHA_RAWHIDE
554 bool "Svpbmt extension support for sup !! 263 bool "Rawhide"
555 depends on 64BIT && MMU <<
556 depends on RISCV_ALTERNATIVE <<
557 default y <<
558 help 264 help
559 Adds support to dynamically detect !! 265 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
560 ISA-extension (Supervisor-mode: pag !! 266 See HOWTO at
561 enable its usage. !! 267 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
562 <<
563 The memory type for a page contains <<
564 that indicate the cacheability, ide <<
565 properties for access to that page. <<
566 268
567 The Svpbmt extension is only availa !! 269 config ALPHA_RUFFIAN
>> 270 bool "Ruffian"
>> 271 help
>> 272 Samsung APC164UX. There is a page on known problems and workarounds
>> 273 at <http://www.alphalinux.org/faq/FAQ-11.html>.
568 274
569 If you don't know what to do here, !! 275 config ALPHA_RX164
>> 276 bool "RX164"
570 277
571 config TOOLCHAIN_HAS_V !! 278 config ALPHA_SX164
572 bool !! 279 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 <<
578 280
579 config RISCV_ISA_V !! 281 config ALPHA_SABLE
580 bool "VECTOR extension support" !! 282 bool "Sable"
581 depends on TOOLCHAIN_HAS_V <<
582 depends on FPU <<
583 select DYNAMIC_SIGFRAME <<
584 default y <<
585 help 283 help
586 Say N here if you want to disable al !! 284 Digital AlphaServer 2000 and 2100-based systems.
587 in the kernel. <<
588 285
589 If you don't know what to do here, s !! 286 config ALPHA_SHARK
>> 287 bool "Shark"
590 288
591 config RISCV_ISA_V_DEFAULT_ENABLE !! 289 config ALPHA_TAKARA
592 bool "Enable userspace Vector by defau !! 290 bool "Takara"
593 depends on RISCV_ISA_V <<
594 default y <<
595 help 291 help
596 Say Y here if you want to enable Vec !! 292 Alpha 11164-based OEM single-board computer.
597 Otherwise, userspace has to make exp <<
598 Vector, or enable it via the sysctl <<
599 <<
600 If you don't know what to do here, s <<
601 293
602 config RISCV_ISA_V_UCOPY_THRESHOLD !! 294 config ALPHA_TITAN
603 int "Threshold size for vectorized use !! 295 bool "Titan"
604 depends on RISCV_ISA_V <<
605 default 768 <<
606 help 296 help
607 Prefer using vectorized copy_to_user !! 297 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
608 workload size exceeds this value. <<
609 298
610 config RISCV_ISA_V_PREEMPTIVE !! 299 config ALPHA_WILDFIRE
611 bool "Run kernel-mode Vector with kern !! 300 bool "Wildfire"
612 depends on PREEMPTION <<
613 depends on RISCV_ISA_V <<
614 default y <<
615 help 301 help
616 Usually, in-kernel SIMD routines are !! 302 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 <<
619 303
620 This config allows kernel to run SIM !! 304 endchoice
621 preemption. Enabling this config wil <<
622 consumption due to the allocation of <<
623 305
624 config RISCV_ISA_ZAWRS !! 306 # clear all implied options (don't want default values for those):
625 bool "Zawrs extension support for more !! 307 # Most of these machines have ISA slots; not exactly sure which don't,
626 depends on RISCV_ALTERNATIVE !! 308 # and this doesn't activate hordes of code, so do it always.
>> 309 config ISA
>> 310 bool
627 default y 311 default y
628 help 312 help
629 The Zawrs extension defines instruct !! 313 Find out whether you have ISA slots on your motherboard. ISA is the
630 which allow a hart to enter a low-po !! 314 name of a bus system, i.e. the way the CPU talks to the other stuff
631 hypervisor while waiting on a store !! 315 inside your box. Other bus systems are PCI, EISA, MicroChannel
632 use of these instructions in the ker !! 316 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
633 detected at boot. !! 317 newer boards don't support it. If you have ISA, say Y, otherwise N.
634 <<
635 If you don't know what to do here, s <<
636 318
637 config TOOLCHAIN_HAS_ZBB !! 319 config ISA_DMA_API
638 bool 320 bool
639 default y 321 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 <<
644 322
645 # This symbol indicates that the toolchain sup !! 323 config PCI
646 # extensions, including Zvk*, Zvbb, and Zvbc. !! 324 bool
647 # binutils added all except Zvkb, then added Z !! 325 depends on !ALPHA_JENSEN
648 config TOOLCHAIN_HAS_VECTOR_CRYPTO <<
649 def_bool $(as-instr, .option arch$(com <<
650 depends on AS_HAS_OPTION_ARCH <<
651 <<
652 config RISCV_ISA_ZBA <<
653 bool "Zba extension support for bit ma <<
654 default y 326 default y
655 help 327 help
656 Add support for enabling optimisati !! 328 Find out whether you have a PCI motherboard. PCI is the name of a
657 extension is detected at boot. !! 329 bus system, i.e. the way the CPU talks to the other stuff inside
>> 330 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
>> 331 VESA. If you have PCI, say Y, otherwise N.
658 332
659 The Zba extension provides instruct !! 333 config PCI_DOMAINS
660 of addresses that index into arrays !! 334 bool
>> 335 default y
>> 336
>> 337 config PCI_SYSCALL
>> 338 def_bool PCI
661 339
662 If you don't know what to do here, !! 340 config IOMMU_HELPER
>> 341 def_bool PCI
663 342
664 config RISCV_ISA_ZBB !! 343 config ALPHA_NONAME
665 bool "Zbb extension support for bit ma !! 344 bool
666 depends on TOOLCHAIN_HAS_ZBB !! 345 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
667 depends on RISCV_ALTERNATIVE <<
668 default y 346 default y
669 help 347 help
670 Adds support to dynamically detect !! 348 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
671 extension (basic bit manipulation) !! 349 UDB). This design was produced by Digital's Technical OEM (TOEM)
>> 350 group. It uses the 21066 processor running at 166MHz or 233MHz. It
>> 351 is a baby-AT size, and runs from a standard PC power supply. It has
>> 352 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
>> 353 2 versions, with either PS/2 or large DIN connectors for the
>> 354 keyboard.
672 355
673 The Zbb extension provides instruct !! 356 config ALPHA_EV4
674 of bit-specific operations (count b !! 357 bool
675 bitrotation, etc). !! 358 depends on ALPHA_JENSEN || (ALPHA_SABLE && !ALPHA_GAMMA) || ALPHA_LYNX || ALPHA_NORITAKE && !ALPHA_PRIMO || ALPHA_MIKASA && !ALPHA_PRIMO || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL || ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
676 !! 359 default y if !ALPHA_LYNX
677 If you don't know what to do here, <<
678 360
679 config TOOLCHAIN_HAS_ZBC !! 361 config ALPHA_LCA
680 bool 362 bool
>> 363 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
681 default y 364 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 <<
686 365
687 config RISCV_ISA_ZBC !! 366 config ALPHA_APECS
688 bool "Zbc extension support for carry- !! 367 bool
689 depends on TOOLCHAIN_HAS_ZBC !! 368 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 369 default y
693 help <<
694 Adds support to dynamically detect <<
695 extension (carry-less multiplicatio <<
696 <<
697 The Zbc extension could accelerate <<
698 calculations. <<
699 <<
700 If you don't know what to do here, <<
701 370
702 config RISCV_ISA_ZICBOM !! 371 config ALPHA_EB64P
703 bool "Zicbom extension support for non !! 372 bool
704 depends on MMU !! 373 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
705 depends on RISCV_ALTERNATIVE <<
706 default y 374 default y
707 select RISCV_DMA_NONCOHERENT <<
708 select DMA_DIRECT_REMAP <<
709 help 375 help
710 Adds support to dynamically detect !! 376 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
711 extension (Cache Block Management O !! 377 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
712 usage. !! 378 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
>> 379 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
>> 380 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
>> 381 Runs from standard PC power supply.
713 382
714 The Zicbom extension can be used to !! 383 config ALPHA_EV5
715 non-coherent DMA support on devices !! 384 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
>> 385 default y if ALPHA_RX164 || ALPHA_RAWHIDE || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_SABLE && ALPHA_GAMMA || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
716 386
717 If you don't know what to do here, !! 387 config ALPHA_EV4
>> 388 bool
>> 389 default y if ALPHA_LYNX && !ALPHA_EV5
718 390
719 config RISCV_ISA_ZICBOZ !! 391 config ALPHA_CIA
720 bool "Zicboz extension support for fas !! 392 bool
721 depends on RISCV_ALTERNATIVE !! 393 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
722 default y 394 default y
723 help <<
724 Enable the use of the Zicboz extens <<
725 when available. <<
726 395
727 The Zicboz extension is used for fa !! 396 config ALPHA_EV56
>> 397 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
>> 398 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
728 399
729 If you don't know what to do here, !! 400 config ALPHA_EV56
>> 401 prompt "EV56 CPU (speed >= 333MHz)?"
>> 402 depends on ALPHA_NORITAKE || ALPHA_PRIMO
730 403
731 config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI !! 404 config ALPHA_EV56
732 def_bool y !! 405 prompt "EV56 CPU (speed >= 400MHz)?"
733 # https://sourceware.org/git/?p=binuti !! 406 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 <<
746 407
747 config TOOLCHAIN_NEEDS_OLD_ISA_SPEC !! 408 config ALPHA_PRIMO
748 def_bool y !! 409 bool "EV5 CPU daughtercard (model 5/xxx)?"
749 depends on TOOLCHAIN_NEEDS_EXPLICIT_ZI !! 410 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 411 help
754 Certain versions of clang and GCC do !! 412 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 <<
758 413
759 config FPU !! 414 config ALPHA_GAMMA
760 bool "FPU support" !! 415 bool "EV5 CPU(s) (model 5/xxx)?"
761 default y !! 416 depends on ALPHA_SABLE
762 help 417 help
763 Say N here if you want to disable al !! 418 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
764 in the kernel. <<
765 419
766 If you don't know what to do here, s !! 420 config ALPHA_GAMMA
>> 421 bool
>> 422 depends on ALPHA_LYNX
>> 423 default y
767 424
768 config IRQ_STACKS !! 425 config ALPHA_T2
769 bool "Independent irq & softirq stacks !! 426 bool
>> 427 depends on ALPHA_SABLE || ALPHA_LYNX
770 default y 428 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 <<
776 429
777 config THREAD_SIZE_ORDER !! 430 config ALPHA_PYXIS
778 int "Kernel stack size (in power-of-tw !! 431 bool
779 range 0 4 !! 432 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
780 default 1 if 32BIT !! 433 default y
781 default 2 <<
782 help <<
783 Specify the Pages of thread stack si <<
784 affects irq stack size, which is equ <<
785 434
786 config RISCV_MISALIGNED !! 435 config ALPHA_EV6
787 bool 436 bool
788 select SYSCTL_ARCH_UNALIGN_ALLOW !! 437 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
789 help !! 438 default y
790 Embed support for emulating misalign <<
791 439
792 choice !! 440 config ALPHA_TSUNAMI
793 prompt "Unaligned Accesses Support" !! 441 bool
794 default RISCV_PROBE_UNALIGNED_ACCESS !! 442 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
>> 443 default y
>> 444
>> 445 config ALPHA_EV67
>> 446 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
>> 447 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
795 help 448 help
796 This determines the level of support !! 449 Is this a machine based on the EV67 core? If in doubt, select N here
797 information is used by the kernel to !! 450 and the machine will be treated as an EV6.
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 <<
840 451
841 endchoice !! 452 config ALPHA_EV7
>> 453 bool
>> 454 depends on ALPHA_MARVEL
>> 455 default y
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 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_SRM
879 def_bool y !! 500 bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME
>> 501 default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
>> 502 ---help---
>> 503 There are two different types of booting firmware on Alphas: SRM,
>> 504 which is command line driven, and ARC, which uses menus and arrow
>> 505 keys. Details about the Linux/Alpha booting process are contained in
>> 506 the Linux/Alpha FAQ, accessible on the WWW from
>> 507 <http://www.alphalinux.org/>.
880 508
881 config ARCH_SELECTS_KEXEC !! 509 The usual way to load Linux on an Alpha machine is to use MILO
882 def_bool y !! 510 (a bootloader that lets you pass command line parameters to the
883 depends on KEXEC !! 511 kernel just like lilo does for the x86 architecture) which can be
884 select HOTPLUG_CPU if SMP !! 512 loaded either from ARC or can be installed directly as a permanent
885 !! 513 firmware replacement from floppy (which requires changing a certain
886 config ARCH_SUPPORTS_KEXEC_FILE !! 514 jumper on the motherboard). If you want to do either of these, say N
887 def_bool 64BIT !! 515 here. If MILO doesn't work on your system (true for Jensen
>> 516 motherboards), you can bypass it altogether and boot Linux directly
>> 517 from an SRM console; say Y here in order to do that. Note that you
>> 518 won't be able to boot from an IDE disk using SRM.
888 519
889 config ARCH_SELECTS_KEXEC_FILE !! 520 If unsure, say N.
890 def_bool y <<
891 depends on KEXEC_FILE <<
892 select HAVE_IMA_KEXEC if IMA <<
893 select KEXEC_ELF <<
894 521
895 config ARCH_SUPPORTS_KEXEC_PURGATORY !! 522 config EISA
896 def_bool ARCH_SUPPORTS_KEXEC_FILE !! 523 bool
>> 524 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
>> 525 default y
897 526
898 config ARCH_SUPPORTS_CRASH_DUMP !! 527 config ARCH_MAY_HAVE_PC_FDC
899 def_bool y 528 def_bool y
900 529
901 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 530 config SMP
902 def_bool CRASH_RESERVE !! 531 bool "Symmetric multi-processing support"
903 !! 532 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
904 config COMPAT !! 533 select USE_GENERIC_SMP_HELPERS
905 bool "Kernel support for 32-bit U-mode !! 534 ---help---
906 default 64BIT !! 535 This enables support for systems with more than one CPU. If you have
907 depends on 64BIT && MMU !! 536 a system with only one CPU, like most personal computers, say N. If
908 help !! 537 you have a system with more than one CPU, say Y.
909 This option enables support for a 32 !! 538
910 kernel at S-mode. riscv32-specific c !! 539 If you say N here, the kernel will run on single and multiprocessor
911 the user helper functions (vdso), si !! 540 machines, but will use only one CPU of a multiprocessor machine. If
912 ptrace interface are handled appropr !! 541 you say Y here, the kernel will run on many, but not all,
913 !! 542 singleprocessor machines. On a singleprocessor machine, the kernel
914 If you want to execute 32-bit usersp !! 543 will run faster if you say N here.
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 <<
981 When that occurs, it is possible to <<
982 line here and choose how the kernel <<
983 544
984 choice !! 545 See also the SMP-HOWTO available at
985 prompt "Built-in command line usage" !! 546 <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 547
1014 endchoice !! 548 If you don't know what to do here, say N.
1015 549
1016 config EFI_STUB !! 550 config HAVE_DEC_LOCK
1017 bool 551 bool
1018 !! 552 depends on SMP
1019 config EFI <<
1020 bool "UEFI runtime support" <<
1021 depends on OF && !XIP_KERNEL <<
1022 depends on MMU <<
1023 default y 553 default y
1024 select ARCH_SUPPORTS_ACPI if 64BIT <<
1025 select EFI_GENERIC_STUB <<
1026 select EFI_PARAMS_FROM_FDT <<
1027 select EFI_RUNTIME_WRAPPERS <<
1028 select EFI_STUB <<
1029 select LIBFDT <<
1030 select RISCV_ISA_C <<
1031 select UCS2_STRING <<
1032 help <<
1033 This option provides support for ru <<
1034 by UEFI firmware (such as non-volat <<
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 554
1039 config DMI !! 555 config NR_CPUS
1040 bool "Enable support for SMBIOS (DMI) !! 556 int "Maximum number of CPUs (2-32)"
1041 depends on EFI !! 557 range 2 32
1042 default y !! 558 depends on SMP
>> 559 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
>> 560 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
1043 help 561 help
1044 This enables SMBIOS/DMI feature for !! 562 MARVEL support can handle a maximum of 32 CPUs, all the others
>> 563 with working support have a maximum of 4 CPUs.
1045 564
1046 This option is only useful on syste !! 565 config ARCH_DISCONTIGMEM_ENABLE
1047 However, even with this option, the !! 566 bool "Discontiguous Memory Support (EXPERIMENTAL)"
1048 continue to boot on existing non-UE !! 567 depends on EXPERIMENTAL
>> 568 help
>> 569 Say Y to support efficient handling of discontiguous physical memory,
>> 570 for architectures which are either NUMA (Non-Uniform Memory Access)
>> 571 or have huge holes in the physical address space for other reasons.
>> 572 See <file:Documentation/vm/numa> for more.
1049 573
1050 config CC_HAVE_STACKPROTECTOR_TLS !! 574 source "mm/Kconfig"
1051 def_bool $(cc-option,-mstack-protecto <<
1052 575
1053 config STACKPROTECTOR_PER_TASK !! 576 config NUMA
1054 def_bool y !! 577 bool "NUMA Support (EXPERIMENTAL)"
1055 depends on !RANDSTRUCT !! 578 depends on DISCONTIGMEM && BROKEN
1056 depends on STACKPROTECTOR && CC_HAVE_ !! 579 help
>> 580 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
>> 581 Access). This option is for configuring high-end multiprocessor
>> 582 server machines. If in doubt, say N.
1057 583
1058 config PHYS_RAM_BASE_FIXED !! 584 config NODES_SHIFT
1059 bool "Explicitly specified physical R !! 585 int
1060 depends on NONPORTABLE !! 586 default "7"
1061 default n !! 587 depends on NEED_MULTIPLE_NODES
1062 588
1063 config PHYS_RAM_BASE !! 589 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
1064 hex "Platform Physical RAM address" !! 590 config ALPHA_LARGE_VMALLOC
1065 depends on PHYS_RAM_BASE_FIXED !! 591 bool
1066 default "0x80000000" !! 592 ---help---
1067 help !! 593 Process creation and other aspects of virtual memory management can
1068 This is the physical address of RAM !! 594 be streamlined if we restrict the kernel to one PGD for all vmalloc
1069 explicitly specified to run early r !! 595 allocations. This equates to about 8GB.
1070 from flash to RAM. !! 596
1071 !! 597 Under normal circumstances, this is so far and above what is needed
1072 config XIP_KERNEL !! 598 as to be laughable. However, there are certain applications (such
1073 bool "Kernel Execute-In-Place from RO !! 599 as benchmark-grade in-kernel web serving) that can make use of as
1074 depends on MMU && SPARSEMEM && NONPOR !! 600 much vmalloc space as is available.
1075 # This prevents XIP from being enable !! 601
1076 # fail to build since XIP doesn't sup !! 602 Say N unless you know you need gobs and gobs of vmalloc space.
1077 depends on !COMPILE_TEST !! 603
1078 select PHYS_RAM_BASE_FIXED !! 604 config VERBOSE_MCHECK
1079 help !! 605 bool "Verbose Machine Checks"
1080 Execute-In-Place allows the kernel !! 606
1081 directly addressable by the CPU, su !! 607 config VERBOSE_MCHECK_ON
1082 space since the text section of the !! 608 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
1083 to RAM. Read-write sections, such !! 609 depends on VERBOSE_MCHECK
1084 are still copied to RAM. The XIP k !! 610 default 1
1085 it has to run directly from flash, !! 611 ---help---
1086 store it. The flash address used t !! 612 This option allows the default printing mode to be set, and then
1087 and for storing it, is configuratio !! 613 possibly overridden by a boot command argument.
1088 say Y here, you must know the prope !! 614
1089 store the kernel image depending on !! 615 For example, if one wanted the option of printing verbose
1090 !! 616 machine checks, but wanted the default to be as if verbose
1091 Also note that the make target beco !! 617 machine check printing was turned off, then one would choose
1092 "make zImage" or "make Image". The !! 618 the printing mode to be 0. Then, upon reboot, one could add
1093 ROM memory will be arch/riscv/boot/ !! 619 the boot command line "verbose_mcheck=1" to get the normal
1094 !! 620 verbose machine check printing, or "verbose_mcheck=2" to get
1095 SPARSEMEM is required because the k !! 621 the maximum information available.
1096 flash resident are not backed by me <<
1097 a struct page on those regions will <<
1098 622
1099 If unsure, say N. !! 623 Take the default (1) unless you want more control or more info.
1100 624
1101 config XIP_PHYS_ADDR !! 625 config HZ
1102 hex "XIP Kernel Physical Location" !! 626 int
1103 depends on XIP_KERNEL !! 627 default 1200 if ALPHA_RAWHIDE
1104 default "0x21000000" !! 628 default 1024
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 629
>> 630 source "drivers/pci/Kconfig"
>> 631 source "drivers/eisa/Kconfig"
1136 632
1137 config BUILTIN_DTB_SOURCE !! 633 source "drivers/pcmcia/Kconfig"
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 634
1145 endmenu # "Boot options" !! 635 config SRM_ENV
>> 636 tristate "SRM environment through procfs"
>> 637 depends on PROC_FS
>> 638 ---help---
>> 639 If you enable this option, a subdirectory inside /proc called
>> 640 /proc/srm_environment will give you access to the all important
>> 641 SRM environment variables (those which have a name) and also
>> 642 to all others (by their internal number).
1146 643
1147 config PORTABLE !! 644 SRM is something like a BIOS for Alpha machines. There are some
1148 bool !! 645 other such BIOSes, like AlphaBIOS, which this driver cannot
1149 default !NONPORTABLE !! 646 support (hey, that's not SRM!).
1150 select EFI <<
1151 select MMU <<
1152 select OF <<
1153 647
1154 config ARCH_PROC_KCORE_TEXT !! 648 Despite the fact that this driver doesn't work on all Alphas (but
1155 def_bool y !! 649 only on those which have SRM as their firmware), it's save to
>> 650 build it even if your particular machine doesn't know about SRM
>> 651 (or if you intend to compile a generic kernel). It will simply
>> 652 not create those subdirectory in /proc (and give you some warning,
>> 653 of course).
1156 654
1157 menu "Power management options" !! 655 This driver is also available as a module and will be called
>> 656 srm_env then.
1158 657
1159 source "kernel/power/Kconfig" !! 658 source "fs/Kconfig.binfmt"
1160 659
1161 config ARCH_HIBERNATION_POSSIBLE !! 660 endmenu
1162 def_bool y <<
1163 661
1164 config ARCH_HIBERNATION_HEADER !! 662 source "net/Kconfig"
1165 def_bool HIBERNATION <<
1166 663
1167 config ARCH_SUSPEND_POSSIBLE !! 664 source "drivers/Kconfig"
1168 def_bool y <<
1169 665
1170 endmenu # "Power management options" !! 666 source "fs/Kconfig"
1171 667
1172 menu "CPU Power Management" !! 668 source "arch/alpha/Kconfig.debug"
1173 669
1174 source "drivers/cpuidle/Kconfig" !! 670 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
>> 671 # but we also need it if VGA_HOSE is set
>> 672 config DUMMY_CONSOLE
>> 673 bool
>> 674 depends on VGA_HOSE
>> 675 default y
1175 676
1176 source "drivers/cpufreq/Kconfig" !! 677 source "security/Kconfig"
1177 678
1178 endmenu # "CPU Power Management" !! 679 source "crypto/Kconfig"
1179 680
1180 source "arch/riscv/kvm/Kconfig" !! 681 source "lib/Kconfig"
1181 682
1182 source "drivers/acpi/Kconfig" <<
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