1 # SPDX-License-Identifier: GPL-2.0-only 1 # SPDX-License-Identifier: GPL-2.0-only
2 # <<
3 # For a description of the syntax of this conf <<
4 # see Documentation/kbuild/kconfig-language.rs <<
5 # <<
6 <<
7 config 64BIT 2 config 64BIT
8 bool !! 3 bool "64-bit kernel" if "$(ARCH)" = "sparc"
>> 4 default "$(ARCH)" = "sparc64"
>> 5 help
>> 6 SPARC is a family of RISC microprocessors designed and marketed by
>> 7 Sun Microsystems, incorporated. They are very widely found in Sun
>> 8 workstations and clones.
9 9
10 config 32BIT !! 10 Say yes to build a 64-bit kernel - formerly known as sparc64
11 bool !! 11 Say no to build a 32-bit kernel - formerly known as sparc
12 12
13 config RISCV !! 13 config SPARC
14 def_bool y !! 14 bool
15 select ACPI_GENERIC_GSI if ACPI !! 15 default y
16 select ACPI_MCFG if (ACPI && PCI) !! 16 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
17 select ACPI_PPTT if ACPI !! 17 select ARCH_MIGHT_HAVE_PC_SERIO
18 select ACPI_REDUCED_HARDWARE_ONLY if A !! 18 select DMA_OPS
19 select ACPI_SPCR_TABLE if ACPI !! 19 select OF
20 select ARCH_DMA_DEFAULT_COHERENT !! 20 select OF_PROMTREE
21 select ARCH_ENABLE_HUGEPAGE_MIGRATION !! 21 select HAVE_ASM_MODVERSIONS
22 select ARCH_ENABLE_MEMORY_HOTPLUG if S !! 22 select HAVE_ARCH_KGDB if !SMP || SPARC64
23 select ARCH_ENABLE_MEMORY_HOTREMOVE if !! 23 select HAVE_ARCH_TRACEHOOK
24 select ARCH_ENABLE_SPLIT_PMD_PTLOCK if !! 24 select HAVE_ARCH_SECCOMP if SPARC64
25 select ARCH_ENABLE_THP_MIGRATION if TR !! 25 select HAVE_EXIT_THREAD
26 select ARCH_HAS_BINFMT_FLAT !! 26 select HAVE_PCI
27 select ARCH_HAS_CURRENT_STACK_POINTER !! 27 select SYSCTL_EXCEPTION_TRACE
28 select ARCH_HAS_DEBUG_VIRTUAL if MMU !! 28 select RTC_CLASS
29 select ARCH_HAS_DEBUG_VM_PGTABLE !! 29 select RTC_DRV_M48T59
30 select ARCH_HAS_DEBUG_WX !! 30 select RTC_SYSTOHC
31 select ARCH_HAS_FAST_MULTIPLIER !! 31 select HAVE_ARCH_JUMP_LABEL if SPARC64
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 32 select GENERIC_IRQ_SHOW
108 select GENERIC_IRQ_SHOW_LEVEL !! 33 select ARCH_WANT_IPC_PARSE_VERSION
109 select GENERIC_LIB_DEVMEM_IS_ALLOWED <<
110 select GENERIC_PCI_IOMAP 34 select GENERIC_PCI_IOMAP
111 select GENERIC_PTDUMP if MMU !! 35 select HAVE_NMI_WATCHDOG if SPARC64
112 select GENERIC_SCHED_CLOCK !! 36 select HAVE_CBPF_JIT if SPARC32
>> 37 select HAVE_EBPF_JIT if SPARC64
>> 38 select HAVE_DEBUG_BUGVERBOSE
113 select GENERIC_SMP_IDLE_THREAD 39 select GENERIC_SMP_IDLE_THREAD
114 select GENERIC_TIME_VSYSCALL if MMU && !! 40 select MODULES_USE_ELF_RELA
115 select GENERIC_VDSO_TIME_NS if HAVE_GE !! 41 select PCI_SYSCALL if PCI
116 select HARDIRQS_SW_RESEND !! 42 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
117 select HAS_IOPORT if MMU !! 43 select ODD_RT_SIGACTION
118 select HAVE_ARCH_AUDITSYSCALL !! 44 select OLD_SIGSUSPEND
119 select HAVE_ARCH_HUGE_VMALLOC if HAVE_ !! 45 select CPU_NO_EFFICIENT_FFS
120 select HAVE_ARCH_HUGE_VMAP if MMU && 6 !! 46 select LOCKDEP_SMALL if LOCKDEP
121 select HAVE_ARCH_JUMP_LABEL if !XIP_KE !! 47 select NEED_DMA_MAP_STATE
122 select HAVE_ARCH_JUMP_LABEL_RELATIVE i !! 48 select NEED_SG_DMA_LENGTH
123 select HAVE_ARCH_KASAN if MMU && 64BIT !! 49 select TRACE_IRQFLAGS_SUPPORT
124 select HAVE_ARCH_KASAN_VMALLOC if MMU !! 50
125 select HAVE_ARCH_KFENCE if MMU && 64BI !! 51 config SPARC32
126 select HAVE_ARCH_KGDB if !XIP_KERNEL !! 52 def_bool !64BIT
127 select HAVE_ARCH_KGDB_QXFER_PKT !! 53 select ARCH_32BIT_OFF_T
128 select HAVE_ARCH_MMAP_RND_BITS if MMU !! 54 select ARCH_HAS_SYNC_DMA_FOR_CPU
129 select HAVE_ARCH_MMAP_RND_COMPAT_BITS !! 55 select CLZ_TAB
130 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS !! 56 select DMA_DIRECT_REMAP
131 select HAVE_ARCH_SECCOMP_FILTER !! 57 select GENERIC_ATOMIC64
132 select HAVE_ARCH_STACKLEAK !! 58 select HAVE_UID16
133 select HAVE_ARCH_THREAD_STRUCT_WHITELI !! 59 select OLD_SIGACTION
134 select HAVE_ARCH_TRACEHOOK !! 60 select ZONE_DMA
135 select HAVE_ARCH_TRANSPARENT_HUGEPAGE !! 61
136 select HAVE_ARCH_USERFAULTFD_MINOR if !! 62 config SPARC64
137 select HAVE_ARCH_VMAP_STACK if MMU && !! 63 def_bool 64BIT
138 select HAVE_ASM_MODVERSIONS !! 64 select ALTERNATE_USER_ADDRESS_SPACE
>> 65 select HAVE_FUNCTION_TRACER
>> 66 select HAVE_FUNCTION_GRAPH_TRACER
>> 67 select HAVE_KRETPROBES
>> 68 select HAVE_KPROBES
>> 69 select MMU_GATHER_RCU_TABLE_FREE if SMP
>> 70 select MMU_GATHER_MERGE_VMAS
>> 71 select MMU_GATHER_NO_FLUSH_CACHE
>> 72 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
>> 73 select HAVE_DYNAMIC_FTRACE
>> 74 select HAVE_FTRACE_MCOUNT_RECORD
>> 75 select HAVE_SYSCALL_TRACEPOINTS
139 select HAVE_CONTEXT_TRACKING_USER 76 select HAVE_CONTEXT_TRACKING_USER
>> 77 select HAVE_TIF_NOHZ
140 select HAVE_DEBUG_KMEMLEAK 78 select HAVE_DEBUG_KMEMLEAK
141 select HAVE_DMA_CONTIGUOUS if MMU !! 79 select IOMMU_HELPER
142 select HAVE_DYNAMIC_FTRACE if !XIP_KER !! 80 select SPARSE_IRQ
143 select HAVE_DYNAMIC_FTRACE_WITH_DIRECT !! 81 select RTC_DRV_CMOS
144 select HAVE_DYNAMIC_FTRACE_WITH_ARGS i !! 82 select RTC_DRV_BQ4802
145 select HAVE_FTRACE_MCOUNT_RECORD if !X !! 83 select RTC_DRV_SUN4V
146 select HAVE_FUNCTION_GRAPH_TRACER !! 84 select RTC_DRV_STARFIRE
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 85 select HAVE_PERF_EVENTS
173 select HAVE_PERF_REGS !! 86 select PERF_USE_VMALLOC
174 select HAVE_PERF_USER_STACK_DUMP !! 87 select ARCH_HAVE_NMI_SAFE_CMPXCHG
175 select HAVE_POSIX_CPU_TIMERS_TASK_WORK !! 88 select HAVE_C_RECORDMCOUNT
176 select HAVE_PREEMPT_DYNAMIC_KEY if !XI !! 89 select HAVE_ARCH_AUDITSYSCALL
>> 90 select ARCH_SUPPORTS_ATOMIC_RMW
>> 91 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
>> 92 select HAVE_NMI
177 select HAVE_REGS_AND_STACK_ACCESS_API 93 select HAVE_REGS_AND_STACK_ACCESS_API
178 select HAVE_RETHOOK if !XIP_KERNEL !! 94 select ARCH_USE_QUEUED_RWLOCKS
179 select HAVE_RSEQ !! 95 select ARCH_USE_QUEUED_SPINLOCKS
180 select HAVE_RUST if RUSTC_SUPPORTS_RIS !! 96 select GENERIC_TIME_VSYSCALL
181 select HAVE_SAMPLE_FTRACE_DIRECT !! 97 select ARCH_CLOCKSOURCE_DATA
182 select HAVE_SAMPLE_FTRACE_DIRECT_MULTI !! 98 select ARCH_HAS_PTE_SPECIAL
183 select HAVE_STACKPROTECTOR !! 99 select PCI_DOMAINS if PCI
184 select HAVE_SYSCALL_TRACEPOINTS !! 100 select ARCH_HAS_GIGANTIC_PAGE
185 select HOTPLUG_CORE_SYNC_DEAD if HOTPL !! 101 select HAVE_SOFTIRQ_ON_OWN_STACK
186 select IRQ_DOMAIN !! 102 select HAVE_SETUP_PER_CPU_AREA
187 select IRQ_FORCED_THREADING !! 103 select NEED_PER_CPU_EMBED_FIRST_CHUNK
188 select KASAN_VMALLOC if KASAN !! 104 select NEED_PER_CPU_PAGE_FIRST_CHUNK
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) <<
232 105
233 config RISCV_USE_LINKER_RELAXATION !! 106 config ARCH_PROC_KCORE_TEXT
234 def_bool y 107 def_bool y
235 # https://github.com/llvm/llvm-project <<
236 depends on !LD_IS_LLD || LLD_VERSION > <<
237 108
238 # https://github.com/llvm/llvm-project/commit/ !! 109 config CPU_BIG_ENDIAN
239 config ARCH_HAS_BROKEN_DWARF5 <<
240 def_bool y 110 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 < <<
246 111
247 config ARCH_MMAP_RND_BITS_MIN !! 112 config ARCH_ATU
248 default 18 if 64BIT !! 113 bool
249 default 8 !! 114 default y if SPARC64
250 <<
251 config ARCH_MMAP_RND_COMPAT_BITS_MIN <<
252 default 8 <<
253 115
254 # max bits determined by the following formula !! 116 config STACKTRACE_SUPPORT
255 # VA_BITS - PAGE_SHIFT - 3 !! 117 bool
256 config ARCH_MMAP_RND_BITS_MAX !! 118 default y if SPARC64
257 default 24 if 64BIT # SV39 based <<
258 default 17 <<
259 119
260 config ARCH_MMAP_RND_COMPAT_BITS_MAX !! 120 config LOCKDEP_SUPPORT
261 default 17 !! 121 bool
>> 122 default y if SPARC64
262 123
263 # set if we run in machine mode, cleared if we !! 124 config ARCH_HIBERNATION_POSSIBLE
264 config RISCV_M_MODE !! 125 def_bool y if SPARC64
265 bool "Build a kernel that runs in mach <<
266 depends on !MMU <<
267 default y <<
268 help <<
269 Select this option if you want to ru <<
270 without the assistance of any other <<
271 126
272 # set if we are running in S-mode and can use !! 127 config AUDIT_ARCH
273 config RISCV_SBI <<
274 bool 128 bool
275 depends on !RISCV_M_MODE <<
276 default y 129 default y
277 130
278 config MMU 131 config MMU
279 bool "MMU-based Paged Memory Managemen <<
280 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 <<
310 config ARCH_SUPPORTS_UPROBES <<
311 def_bool y <<
312 <<
313 config STACKTRACE_SUPPORT <<
314 def_bool y <<
315 <<
316 config GENERIC_BUG <<
317 def_bool y <<
318 depends on BUG <<
319 select GENERIC_BUG_RELATIVE_POINTERS i <<
320 <<
321 config GENERIC_BUG_RELATIVE_POINTERS <<
322 bool 132 bool
>> 133 default y
323 134
324 config GENERIC_CALIBRATE_DELAY !! 135 config HIGHMEM
325 def_bool y <<
326 <<
327 config GENERIC_CSUM <<
328 def_bool y <<
329 <<
330 config GENERIC_HWEIGHT <<
331 def_bool y <<
332 <<
333 config FIX_EARLYCON_MEM <<
334 def_bool MMU <<
335 <<
336 config ILLEGAL_POINTER_VALUE <<
337 hex <<
338 default 0 if 32BIT <<
339 default 0xdead000000000000 if 64BIT <<
340 <<
341 config PGTABLE_LEVELS <<
342 int <<
343 default 5 if 64BIT <<
344 default 2 <<
345 <<
346 config LOCKDEP_SUPPORT <<
347 def_bool y <<
348 <<
349 config RISCV_DMA_NONCOHERENT <<
350 bool 136 bool
351 select ARCH_HAS_DMA_PREP_COHERENT !! 137 default y if SPARC32
352 select ARCH_HAS_SETUP_DMA_OPS !! 138 select KMAP_LOCAL
353 select ARCH_HAS_SYNC_DMA_FOR_CPU <<
354 select ARCH_HAS_SYNC_DMA_FOR_DEVICE <<
355 select DMA_BOUNCE_UNALIGNED_KMALLOC if <<
356 139
357 config RISCV_NONSTANDARD_CACHE_OPS !! 140 config GENERIC_ISA_DMA
358 bool 141 bool
359 help !! 142 default y if SPARC32
360 This enables function pointer suppor <<
361 systems to handle cache management. <<
362 143
363 config AS_HAS_INSN !! 144 config PGTABLE_LEVELS
364 def_bool $(as-instr,.insn r 51$(comma) !! 145 default 4 if 64BIT
365 !! 146 default 3
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 <<
371 source "arch/riscv/Kconfig.socs" <<
372 source "arch/riscv/Kconfig.errata" <<
373 <<
374 menu "Platform type" <<
375 <<
376 config NONPORTABLE <<
377 bool "Allow configurations that result <<
378 help <<
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 <<
384 Selecting N does not guarantee kerne <<
385 systems. Selecting any of the optio <<
386 result in kernel binaries that are u <<
387 systems. <<
388 <<
389 If unsure, say N. <<
390 147
391 choice !! 148 config ARCH_SUPPORTS_UPROBES
392 prompt "Base ISA" !! 149 def_bool y if SPARC64
393 default ARCH_RV64I <<
394 help <<
395 This selects the base ISA that this <<
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 <<
413 endchoice <<
414 <<
415 # We must be able to map all physical memory i <<
416 # is still a bit more efficient when generatin <<
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 <<
428 150
429 config MODULE_SECTIONS !! 151 menu "Processor type and features"
430 bool <<
431 select HAVE_MOD_ARCH_SPECIFIC <<
432 152
433 config SMP 153 config SMP
434 bool "Symmetric Multi-Processing" !! 154 bool "Symmetric multi-processing support"
435 help 155 help
436 This enables support for systems wit !! 156 This enables support for systems with more than one CPU. If you have
437 you say N here, the kernel will run !! 157 a system with only one CPU, say N. If you have a system with more
438 multiprocessor machines, but will us !! 158 than one CPU, say Y.
439 multiprocessor machine. If you say Y !! 159
440 on many, but not all, single process !! 160 If you say N here, the kernel will run on uni- and multiprocessor
441 processor machine, the kernel will r !! 161 machines, but will use only one CPU of a multiprocessor machine. If
442 here. !! 162 you say Y here, the kernel will run on many, but not all,
>> 163 uniprocessor machines. On a uniprocessor machine, the kernel
>> 164 will run faster if you say N here.
>> 165
>> 166 People using multiprocessor machines who say Y here should also say
>> 167 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 168 Management" code will be disabled if you say Y here.
443 169
444 If you don't know what to do here, s !! 170 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
>> 171 available at <https://www.tldp.org/docs.html#howto>.
445 172
446 config SCHED_MC !! 173 If you don't know what to do here, say N.
447 bool "Multi-core scheduler support" <<
448 depends on SMP <<
449 help <<
450 Multi-core scheduler support improve <<
451 making when dealing with multi-core <<
452 increased overhead in some places. I <<
453 174
454 config NR_CPUS 175 config NR_CPUS
455 int "Maximum number of CPUs (2-512)" !! 176 int "Maximum number of CPUs"
456 depends on SMP <<
457 range 2 512 if !RISCV_SBI_V01 <<
458 range 2 32 if RISCV_SBI_V01 && 32BIT <<
459 range 2 64 if RISCV_SBI_V01 && 64BIT <<
460 default "32" if 32BIT <<
461 default "64" if 64BIT <<
462 <<
463 config HOTPLUG_CPU <<
464 bool "Support for hot-pluggable CPUs" <<
465 depends on SMP 177 depends on SMP
466 select GENERIC_IRQ_MIGRATION !! 178 range 2 32 if SPARC32
467 help !! 179 range 2 4096 if SPARC64
468 !! 180 default 32 if SPARC32
469 Say Y here to experiment with turnin !! 181 default 4096 if SPARC64
470 can be controlled through /sys/devic <<
471 <<
472 Say N if you want to disable CPU hot <<
473 <<
474 choice <<
475 prompt "CPU Tuning" <<
476 default TUNE_GENERIC <<
477 <<
478 config TUNE_GENERIC <<
479 bool "generic" <<
480 182
481 endchoice !! 183 source "kernel/Kconfig.hz"
482 <<
483 # Common NUMA Features <<
484 config NUMA <<
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 <<
495 Enable NUMA (Non-Uniform Memory Acce <<
496 <<
497 The kernel will try to allocate memo <<
498 local memory of the CPU and add some <<
499 <<
500 config NODES_SHIFT <<
501 int "Maximum NUMA Nodes (as a power of <<
502 range 1 10 <<
503 default "2" <<
504 depends on NUMA <<
505 help <<
506 Specify the maximum number of NUMA N <<
507 system. Increases memory reserved t <<
508 184
509 config RISCV_ALTERNATIVE !! 185 config GENERIC_HWEIGHT
510 bool 186 bool
511 depends on !XIP_KERNEL !! 187 default y
512 help <<
513 This Kconfig allows the kernel to au <<
514 erratum or cpufeature required by th <<
515 time. The code patching overhead is <<
516 once at boot and once on each module <<
517 188
518 config RISCV_ALTERNATIVE_EARLY !! 189 config GENERIC_CALIBRATE_DELAY
519 bool 190 bool
520 depends on RISCV_ALTERNATIVE <<
521 help <<
522 Allows early patching of the kernel <<
523 <<
524 config RISCV_ISA_C <<
525 bool "Emit compressed instructions whe <<
526 default y 191 default y
527 help <<
528 Adds "C" to the ISA subsets that the <<
529 when building Linux, which results i <<
530 Linux binary. <<
531 192
532 If you don't know what to do here, s !! 193 config ARCH_MAY_HAVE_PC_FDC
533 !! 194 bool
534 config RISCV_ISA_SVNAPOT <<
535 bool "Svnapot extension support for su <<
536 depends on 64BIT && MMU <<
537 depends on RISCV_ALTERNATIVE <<
538 default y 195 default y
539 help <<
540 Allow kernel to detect the Svnapot I <<
541 time and enable its usage. <<
542 <<
543 The Svnapot extension is used to mar <<
544 of contiguous virtual-to-physical tr <<
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 <<
550 196
551 If you don't know what to do here, s !! 197 config EMULATED_CMPXCHG
552 !! 198 bool
553 config RISCV_ISA_SVPBMT !! 199 default y if SPARC32
554 bool "Svpbmt extension support for sup <<
555 depends on 64BIT && MMU <<
556 depends on RISCV_ALTERNATIVE <<
557 default y <<
558 help 200 help
559 Adds support to dynamically detect !! 201 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
560 ISA-extension (Supervisor-mode: pag !! 202 is emulated, and therefore it is not completely atomic.
561 enable its usage. <<
562 <<
563 The memory type for a page contains <<
564 that indicate the cacheability, ide <<
565 properties for access to that page. <<
566 <<
567 The Svpbmt extension is only availa <<
568 203
569 If you don't know what to do here, !! 204 # Makefile helpers
570 !! 205 config SPARC32_SMP
571 config TOOLCHAIN_HAS_V <<
572 bool 206 bool
573 default y 207 default y
574 depends on !64BIT || $(cc-option,-mabi !! 208 depends on SPARC32 && SMP
575 depends on !32BIT || $(cc-option,-mabi <<
576 depends on LLD_VERSION >= 140000 || LD <<
577 depends on AS_HAS_OPTION_ARCH <<
578 209
579 config RISCV_ISA_V !! 210 config SPARC64_SMP
580 bool "VECTOR extension support" !! 211 bool
581 depends on TOOLCHAIN_HAS_V <<
582 depends on FPU <<
583 select DYNAMIC_SIGFRAME <<
584 default y 212 default y
585 help !! 213 depends on SPARC64 && SMP
586 Say N here if you want to disable al <<
587 in the kernel. <<
588 <<
589 If you don't know what to do here, s <<
590 214
591 config RISCV_ISA_V_DEFAULT_ENABLE !! 215 config EARLYFB
592 bool "Enable userspace Vector by defau !! 216 bool "Support for early boot text console"
593 depends on RISCV_ISA_V <<
594 default y 217 default y
>> 218 depends on SPARC64
595 help 219 help
596 Say Y here if you want to enable Vec !! 220 Say Y here to enable a faster early framebuffer boot console.
597 Otherwise, userspace has to make exp <<
598 Vector, or enable it via the sysctl <<
599 221
600 If you don't know what to do here, s !! 222 config HOTPLUG_CPU
601 !! 223 bool "Support for hot-pluggable CPUs"
602 config RISCV_ISA_V_UCOPY_THRESHOLD !! 224 depends on SPARC64 && SMP
603 int "Threshold size for vectorized use <<
604 depends on RISCV_ISA_V <<
605 default 768 <<
606 help <<
607 Prefer using vectorized copy_to_user <<
608 workload size exceeds this value. <<
609 <<
610 config RISCV_ISA_V_PREEMPTIVE <<
611 bool "Run kernel-mode Vector with kern <<
612 depends on PREEMPTION <<
613 depends on RISCV_ISA_V <<
614 default y <<
615 help 225 help
616 Usually, in-kernel SIMD routines are !! 226 Say Y here to experiment with turning CPUs off and on. CPUs
617 Functions which envoke long running !! 227 can be controlled through /sys/devices/system/cpu/cpu#.
618 vector unit to prevent blocking othe !! 228 Say N if you want to disable CPU hotplug.
619 229
620 This config allows kernel to run SIM !! 230 if SPARC64
621 preemption. Enabling this config wil !! 231 source "drivers/cpufreq/Kconfig"
622 consumption due to the allocation of !! 232 endif
623 233
624 config RISCV_ISA_ZAWRS !! 234 config US3_MC
625 bool "Zawrs extension support for more !! 235 tristate "UltraSPARC-III Memory Controller driver"
626 depends on RISCV_ALTERNATIVE !! 236 depends on SPARC64
627 default y 237 default y
628 help 238 help
629 The Zawrs extension defines instruct !! 239 This adds a driver for the UltraSPARC-III memory controller.
630 which allow a hart to enter a low-po !! 240 Loading this driver allows exact mnemonic strings to be
631 hypervisor while waiting on a store !! 241 printed in the event of a memory error, so that the faulty DIMM
632 use of these instructions in the ker !! 242 on the motherboard can be matched to the error.
633 detected at boot. <<
634 243
635 If you don't know what to do here, s !! 244 If in doubt, say Y, as this information can be very useful.
636 245
637 config TOOLCHAIN_HAS_ZBB !! 246 # Global things across all Sun machines.
>> 247 config GENERIC_LOCKBREAK
638 bool 248 bool
639 default y 249 default y
640 depends on !64BIT || $(cc-option,-mabi !! 250 depends on SPARC64 && SMP && PREEMPTION
641 depends on !32BIT || $(cc-option,-mabi <<
642 depends on LLD_VERSION >= 150000 || LD <<
643 depends on AS_HAS_OPTION_ARCH <<
644 251
645 # This symbol indicates that the toolchain sup !! 252 config NUMA
646 # extensions, including Zvk*, Zvbb, and Zvbc. !! 253 bool "NUMA support"
647 # binutils added all except Zvkb, then added Z !! 254 depends on SPARC64 && SMP
648 config TOOLCHAIN_HAS_VECTOR_CRYPTO <<
649 def_bool $(as-instr, .option arch$(com <<
650 depends on AS_HAS_OPTION_ARCH <<
651 255
652 config RISCV_ISA_ZBA !! 256 config NODES_SHIFT
653 bool "Zba extension support for bit ma !! 257 int "Maximum NUMA Nodes (as a power of 2)"
654 default y !! 258 range 4 5 if SPARC64
>> 259 default "5"
>> 260 depends on NUMA
655 help 261 help
656 Add support for enabling optimisati !! 262 Specify the maximum number of NUMA Nodes available on the target
657 extension is detected at boot. !! 263 system. Increases memory reserved to accommodate various tables.
658 <<
659 The Zba extension provides instruct <<
660 of addresses that index into arrays <<
661 264
662 If you don't know what to do here, !! 265 config ARCH_SPARSEMEM_ENABLE
>> 266 def_bool y if SPARC64
>> 267 select SPARSEMEM_VMEMMAP_ENABLE
663 268
664 config RISCV_ISA_ZBB !! 269 config ARCH_SPARSEMEM_DEFAULT
665 bool "Zbb extension support for bit ma !! 270 def_bool y if SPARC64
666 depends on TOOLCHAIN_HAS_ZBB <<
667 depends on RISCV_ALTERNATIVE <<
668 default y <<
669 help <<
670 Adds support to dynamically detect <<
671 extension (basic bit manipulation) <<
672 271
673 The Zbb extension provides instruct !! 272 config FORCE_MAX_ZONEORDER
674 of bit-specific operations (count b !! 273 int "Maximum zone order"
675 bitrotation, etc). !! 274 default "13"
>> 275 help
>> 276 The kernel memory allocator divides physically contiguous memory
>> 277 blocks into "zones", where each zone is a power of two number of
>> 278 pages. This option selects the largest power of two that the kernel
>> 279 keeps in the memory allocator. If you need to allocate very large
>> 280 blocks of physically contiguous memory, then you may need to
>> 281 increase this value.
676 282
677 If you don't know what to do here, !! 283 This config option is actually maximum order plus one. For example,
>> 284 a value of 13 means that the largest free memory block is 2^12 pages.
678 285
679 config TOOLCHAIN_HAS_ZBC !! 286 if SPARC64
680 bool !! 287 source "kernel/power/Kconfig"
681 default y !! 288 endif
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 <<
686 289
687 config RISCV_ISA_ZBC !! 290 config SCHED_SMT
688 bool "Zbc extension support for carry- !! 291 bool "SMT (Hyperthreading) scheduler support"
689 depends on TOOLCHAIN_HAS_ZBC !! 292 depends on SPARC64 && SMP
690 depends on MMU <<
691 depends on RISCV_ALTERNATIVE <<
692 default y 293 default y
693 help 294 help
694 Adds support to dynamically detect !! 295 SMT scheduler support improves the CPU scheduler's decision making
695 extension (carry-less multiplicatio !! 296 when dealing with SPARC cpus at a cost of slightly increased overhead
696 !! 297 in some places. If unsure say N here.
697 The Zbc extension could accelerate <<
698 calculations. <<
699 298
700 If you don't know what to do here, !! 299 config SCHED_MC
701 !! 300 bool "Multi-core scheduler support"
702 config RISCV_ISA_ZICBOM !! 301 depends on SPARC64 && SMP
703 bool "Zicbom extension support for non <<
704 depends on MMU <<
705 depends on RISCV_ALTERNATIVE <<
706 default y 302 default y
707 select RISCV_DMA_NONCOHERENT <<
708 select DMA_DIRECT_REMAP <<
709 help 303 help
710 Adds support to dynamically detect !! 304 Multi-core scheduler support improves the CPU scheduler's decision
711 extension (Cache Block Management O !! 305 making when dealing with multi-core CPU chips at a cost of slightly
712 usage. !! 306 increased overhead in some places. If unsure say N here.
713 <<
714 The Zicbom extension can be used to <<
715 non-coherent DMA support on devices <<
716 307
717 If you don't know what to do here, !! 308 config CMDLINE_BOOL
>> 309 bool "Default bootloader kernel arguments"
>> 310 depends on SPARC64
718 311
719 config RISCV_ISA_ZICBOZ !! 312 config CMDLINE
720 bool "Zicboz extension support for fas !! 313 string "Initial kernel command string"
721 depends on RISCV_ALTERNATIVE !! 314 depends on CMDLINE_BOOL
722 default y !! 315 default "console=ttyS0,9600 root=/dev/sda1"
723 help 316 help
724 Enable the use of the Zicboz extens !! 317 Say Y here if you want to be able to pass default arguments to
725 when available. !! 318 the kernel. This will be overridden by the bootloader, if you
726 !! 319 use one (such as SILO). This is most useful if you want to boot
727 The Zicboz extension is used for fa !! 320 a kernel from TFTP, and want default options to be available
>> 321 with having them passed on the command line.
728 322
729 If you don't know what to do here, !! 323 NOTE: This option WILL override the PROM bootargs setting!
730 324
731 config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI !! 325 config SUN_PM
732 def_bool y !! 326 bool
733 # https://sourceware.org/git/?p=binuti !! 327 default y if SPARC32
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 <<
747 config TOOLCHAIN_NEEDS_OLD_ISA_SPEC <<
748 def_bool y <<
749 depends on TOOLCHAIN_NEEDS_EXPLICIT_ZI <<
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 328 help
754 Certain versions of clang and GCC do !! 329 Enable power management and CPU standby features on supported
755 -march. This option causes an older !! 330 SPARC platforms.
756 versions of clang and GCC to be pass <<
757 as passing zicsr and zifencei to -ma <<
758 331
759 config FPU !! 332 config SPARC_LED
760 bool "FPU support" !! 333 tristate "Sun4m LED driver"
761 default y !! 334 depends on SPARC32
762 help 335 help
763 Say N here if you want to disable al !! 336 This driver toggles the front-panel LED on sun4m systems
764 in the kernel. !! 337 in a user-specifiable manner. Its state can be probed
>> 338 by reading /proc/led and its blinking mode can be changed
>> 339 via writes to /proc/led
765 340
766 If you don't know what to do here, s !! 341 config SERIAL_CONSOLE
767 !! 342 bool
768 config IRQ_STACKS !! 343 depends on SPARC32
769 bool "Independent irq & softirq stacks <<
770 default y 344 default y
771 select HAVE_IRQ_EXIT_ON_IRQ_STACK <<
772 select HAVE_SOFTIRQ_ON_OWN_STACK <<
773 help 345 help
774 Add independent irq & softirq stacks !! 346 If you say Y here, it will be possible to use a serial port as the
775 overflows. We may save some memory f !! 347 system console (the system console is the device which receives all
>> 348 kernel messages and warnings and which allows logins in single user
>> 349 mode). This could be useful if some terminal or printer is connected
>> 350 to that serial port.
776 351
777 config THREAD_SIZE_ORDER !! 352 Even if you say Y here, the currently visible virtual console
778 int "Kernel stack size (in power-of-tw !! 353 (/dev/tty0) will still be used as the system console by default, but
779 range 0 4 !! 354 you can alter that using a kernel command line option such as
780 default 1 if 32BIT !! 355 "console=ttyS1". (Try "man bootparam" or see the documentation of
781 default 2 !! 356 your boot loader (silo) about how to pass options to the kernel at
782 help !! 357 boot time.)
783 Specify the Pages of thread stack si <<
784 affects irq stack size, which is equ <<
785 358
786 config RISCV_MISALIGNED !! 359 If you don't have a graphics card installed and you say Y here, the
787 bool !! 360 kernel will automatically use the first serial line, /dev/ttyS0, as
788 select SYSCTL_ARCH_UNALIGN_ALLOW !! 361 system console.
789 help <<
790 Embed support for emulating misalign <<
791 362
792 choice !! 363 If unsure, say N.
793 prompt "Unaligned Accesses Support" <<
794 default RISCV_PROBE_UNALIGNED_ACCESS <<
795 help <<
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. <<
800 364
801 config RISCV_PROBE_UNALIGNED_ACCESS !! 365 config SPARC_LEON
802 bool "Probe for hardware unaligned acc !! 366 bool "Sparc Leon processor family"
803 select RISCV_MISALIGNED !! 367 depends on SPARC32
>> 368 select USB_EHCI_BIG_ENDIAN_MMIO
>> 369 select USB_EHCI_BIG_ENDIAN_DESC
>> 370 select USB_UHCI_BIG_ENDIAN_MMIO
>> 371 select USB_UHCI_BIG_ENDIAN_DESC
804 help 372 help
805 During boot, the kernel will run a s !! 373 If you say Y here if you are running on a SPARC-LEON processor.
806 speed of unaligned accesses. This pr !! 374 The LEON processor is a synthesizable VHDL model of the
807 the speed of unaligned accesses on t !! 375 SPARC-v8 standard. LEON is part of the GRLIB collection of
808 memory accesses trap into the kernel !! 376 IP cores that are distributed under GPL. GRLIB can be downloaded
809 system, the kernel will emulate the !! 377 from www.gaisler.com. You can download a sparc-linux cross-compilation
810 UABI. !! 378 toolchain at www.gaisler.com.
811 379
812 config RISCV_EMULATED_UNALIGNED_ACCESS !! 380 if SPARC_LEON
813 bool "Emulate unaligned access where s !! 381 menu "U-Boot options"
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 <<
820 382
821 config RISCV_SLOW_UNALIGNED_ACCESS !! 383 config UBOOT_LOAD_ADDR
822 bool "Assume the system supports slow !! 384 hex "uImage Load Address"
823 depends on NONPORTABLE !! 385 default 0x40004000
824 help 386 help
825 Assume that the system supports slow !! 387 U-Boot kernel load address, the address in physical address space
826 kernel and userspace programs may no !! 388 where u-boot will place the Linux kernel before booting it.
827 that do not support unaligned memory !! 389 This address is normally the base address of main memory + 0x4000.
828 390
829 config RISCV_EFFICIENT_UNALIGNED_ACCESS !! 391 config UBOOT_FLASH_ADDR
830 bool "Assume the system supports fast !! 392 hex "uImage.o Load Address"
831 depends on NONPORTABLE !! 393 default 0x00080000
832 select DCACHE_WORD_ACCESS if MMU <<
833 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
834 help 394 help
835 Assume that the system supports fast !! 395 Optional setting only affecting the uImage.o ELF-image used to
836 enabled, this option improves the pe !! 396 download the uImage file to the target using a ELF-loader other than
837 systems. However, the kernel and use !! 397 U-Boot. It may for example be used to download an uImage to FLASH with
838 slowly, or will not be able to run a !! 398 the GRMON utility before even starting u-boot.
839 support efficient unaligned memory a <<
840 <<
841 endchoice <<
842 <<
843 source "arch/riscv/Kconfig.vendor" <<
844 <<
845 endmenu # "Platform type" <<
846 399
847 menu "Kernel features" !! 400 config UBOOT_ENTRY_ADDR
848 !! 401 hex "uImage Entry Address"
849 source "kernel/Kconfig.hz" !! 402 default 0xf0004000
850 <<
851 config RISCV_SBI_V01 <<
852 bool "SBI v0.1 support" <<
853 depends on RISCV_SBI <<
854 help 403 help
855 This config allows kernel to use SBI !! 404 Do not change this unless you know what you're doing. This is
856 deprecated in future once legacy M-m !! 405 hardcoded by the SPARC32 and LEON port.
857 <<
858 config RISCV_BOOT_SPINWAIT <<
859 bool "Spinwait booting method" <<
860 depends on SMP <<
861 default y if RISCV_SBI_V01 || RISCV_M_ <<
862 help <<
863 This enables support for booting Lin <<
864 spinwait method, all cores randomly <<
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 <<
876 If unsure what to do here, say N. <<
877 <<
878 config ARCH_SUPPORTS_KEXEC <<
879 def_bool y <<
880 406
881 config ARCH_SELECTS_KEXEC !! 407 This is the virtual address u-boot jumps to when booting the Linux
882 def_bool y !! 408 Kernel.
883 depends on KEXEC <<
884 select HOTPLUG_CPU if SMP <<
885 <<
886 config ARCH_SUPPORTS_KEXEC_FILE <<
887 def_bool 64BIT <<
888 <<
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 <<
894 409
895 config ARCH_SUPPORTS_KEXEC_PURGATORY !! 410 endmenu
896 def_bool ARCH_SUPPORTS_KEXEC_FILE !! 411 endif
897 412
898 config ARCH_SUPPORTS_CRASH_DUMP !! 413 endmenu
899 def_bool y <<
900 <<
901 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO <<
902 def_bool CRASH_RESERVE <<
903 <<
904 config COMPAT <<
905 bool "Kernel support for 32-bit U-mode <<
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 <<
966 414
967 If unsure, say N. !! 415 menu "Bus options (PCI etc.)"
968 !! 416 config SBUS
969 endmenu # "Kernel features" !! 417 bool
970 !! 418 default y
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 <<
984 choice <<
985 prompt "Built-in command line usage" <<
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 <<
997 419
998 config CMDLINE_EXTEND !! 420 config SBUSCHAR
999 bool "Extend bootloader kernel argumen !! 421 bool
1000 help !! 422 default y
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 423
1006 config CMDLINE_FORCE !! 424 config SUN_LDOMS
1007 bool "Always use the default kernel c !! 425 bool "Sun Logical Domains support"
>> 426 depends on SPARC64
1008 help 427 help
1009 Always use the built-in command lin !! 428 Say Y here is you want to support virtual devices via
1010 boot. This is useful in case you ne !! 429 Logical Domains.
1011 command line on systems where you d <<
1012 over it. <<
1013 430
1014 endchoice !! 431 config PCIC_PCI
>> 432 bool
>> 433 depends on PCI && SPARC32 && !SPARC_LEON
>> 434 default y
1015 435
1016 config EFI_STUB !! 436 config LEON_PCI
1017 bool 437 bool
>> 438 depends on PCI && SPARC_LEON
>> 439 default y
1018 440
1019 config EFI !! 441 config SPARC_GRPCI1
1020 bool "UEFI runtime support" !! 442 bool "GRPCI Host Bridge Support"
1021 depends on OF && !XIP_KERNEL !! 443 depends on LEON_PCI
1022 depends on MMU <<
1023 default y 444 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 445 help
1033 This option provides support for ru !! 446 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
1034 by UEFI firmware (such as non-volat !! 447 PCI host controller is typically found in GRLIB SPARC32/LEON
1035 clock, and platform reset). A UEFI !! 448 systems. The driver has one property (all_pci_errors) controlled
1036 allow the kernel to be booted as an !! 449 from the bootloader that makes the GRPCI to generate interrupts
1037 is only useful on systems that have !! 450 on detected PCI Parity and System errors.
1038 451
1039 config DMI !! 452 config SPARC_GRPCI2
1040 bool "Enable support for SMBIOS (DMI) !! 453 bool "GRPCI2 Host Bridge Support"
1041 depends on EFI !! 454 depends on LEON_PCI
1042 default y 455 default y
1043 help 456 help
1044 This enables SMBIOS/DMI feature for !! 457 Say Y here to include the GRPCI2 Host Bridge Driver.
1045 <<
1046 This option is only useful on syste <<
1047 However, even with this option, the <<
1048 continue to boot on existing non-UE <<
1049 <<
1050 config CC_HAVE_STACKPROTECTOR_TLS <<
1051 def_bool $(cc-option,-mstack-protecto <<
1052 <<
1053 config STACKPROTECTOR_PER_TASK <<
1054 def_bool y <<
1055 depends on !RANDSTRUCT <<
1056 depends on STACKPROTECTOR && CC_HAVE_ <<
1057 458
1058 config PHYS_RAM_BASE_FIXED !! 459 config SUN_OPENPROMFS
1059 bool "Explicitly specified physical R !! 460 tristate "Openprom tree appears in /proc/openprom"
1060 depends on NONPORTABLE <<
1061 default n <<
1062 <<
1063 config PHYS_RAM_BASE <<
1064 hex "Platform Physical RAM address" <<
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 <<
1099 If unsure, say N. <<
1100 <<
1101 config XIP_PHYS_ADDR <<
1102 hex "XIP Kernel Physical Location" <<
1103 depends on XIP_KERNEL <<
1104 default "0x21000000" <<
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 461 help
1132 Build a device tree into the Linux !! 462 If you say Y, the OpenPROM device tree will be available as a
1133 This option should be selected if n !! 463 virtual file system, which you can mount to /proc/openprom by "mount
1134 If unsure, say N. !! 464 -t openpromfs none /proc/openprom".
1135 465
>> 466 To compile the /proc/openprom support as a module, choose M here: the
>> 467 module will be called openpromfs.
1136 468
1137 config BUILTIN_DTB_SOURCE !! 469 Only choose N if you know in advance that you will not need to modify
1138 string "Built-in device tree source" !! 470 OpenPROM settings on the running system.
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 <<
1145 endmenu # "Boot options" <<
1146 471
1147 config PORTABLE !! 472 # Makefile helpers
>> 473 config SPARC64_PCI
1148 bool 474 bool
1149 default !NONPORTABLE !! 475 default y
1150 select EFI !! 476 depends on SPARC64 && PCI
1151 select MMU <<
1152 select OF <<
1153 <<
1154 config ARCH_PROC_KCORE_TEXT <<
1155 def_bool y <<
1156 <<
1157 menu "Power management options" <<
1158 <<
1159 source "kernel/power/Kconfig" <<
1160 <<
1161 config ARCH_HIBERNATION_POSSIBLE <<
1162 def_bool y <<
1163 <<
1164 config ARCH_HIBERNATION_HEADER <<
1165 def_bool HIBERNATION <<
1166 <<
1167 config ARCH_SUSPEND_POSSIBLE <<
1168 def_bool y <<
1169 <<
1170 endmenu # "Power management options" <<
1171 <<
1172 menu "CPU Power Management" <<
1173 <<
1174 source "drivers/cpuidle/Kconfig" <<
1175 477
1176 source "drivers/cpufreq/Kconfig" !! 478 config SPARC64_PCI_MSI
>> 479 bool
>> 480 default y
>> 481 depends on SPARC64_PCI && PCI_MSI
1177 482
1178 endmenu # "CPU Power Management" !! 483 endmenu
1179 484
1180 source "arch/riscv/kvm/Kconfig" !! 485 config COMPAT
>> 486 bool
>> 487 depends on SPARC64
>> 488 default y
>> 489 select HAVE_UID16
>> 490 select ARCH_WANT_OLD_COMPAT_IPC
>> 491 select COMPAT_OLD_SIGACTION
1181 492
1182 source "drivers/acpi/Kconfig" !! 493 source "drivers/sbus/char/Kconfig"
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