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_IDE
23 select ARCH_ENABLE_MEMORY_HOTREMOVE if !! 23 select HAVE_OPROFILE
24 select ARCH_ENABLE_SPLIT_PMD_PTLOCK if !! 24 select HAVE_ARCH_KGDB if !SMP || SPARC64
25 select ARCH_ENABLE_THP_MIGRATION if TR !! 25 select HAVE_ARCH_TRACEHOOK
26 select ARCH_HAS_BINFMT_FLAT !! 26 select HAVE_ARCH_SECCOMP if SPARC64
27 select ARCH_HAS_CURRENT_STACK_POINTER !! 27 select HAVE_EXIT_THREAD
28 select ARCH_HAS_DEBUG_VIRTUAL if MMU !! 28 select HAVE_PCI
29 select ARCH_HAS_DEBUG_VM_PGTABLE !! 29 select SYSCTL_EXCEPTION_TRACE
30 select ARCH_HAS_DEBUG_WX !! 30 select RTC_CLASS
31 select ARCH_HAS_FAST_MULTIPLIER !! 31 select RTC_DRV_M48T59
32 select ARCH_HAS_FORTIFY_SOURCE !! 32 select RTC_SYSTOHC
33 select ARCH_HAS_GCOV_PROFILE_ALL !! 33 select HAVE_ARCH_JUMP_LABEL if SPARC64
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 34 select GENERIC_IRQ_SHOW
108 select GENERIC_IRQ_SHOW_LEVEL !! 35 select ARCH_WANT_IPC_PARSE_VERSION
109 select GENERIC_LIB_DEVMEM_IS_ALLOWED <<
110 select GENERIC_PCI_IOMAP 36 select GENERIC_PCI_IOMAP
111 select GENERIC_PTDUMP if MMU !! 37 select HAVE_NMI_WATCHDOG if SPARC64
112 select GENERIC_SCHED_CLOCK !! 38 select HAVE_CBPF_JIT if SPARC32
>> 39 select HAVE_EBPF_JIT if SPARC64
>> 40 select HAVE_DEBUG_BUGVERBOSE
113 select GENERIC_SMP_IDLE_THREAD 41 select GENERIC_SMP_IDLE_THREAD
114 select GENERIC_TIME_VSYSCALL if MMU && !! 42 select GENERIC_CLOCKEVENTS
115 select GENERIC_VDSO_TIME_NS if HAVE_GE !! 43 select GENERIC_STRNCPY_FROM_USER
116 select HARDIRQS_SW_RESEND !! 44 select GENERIC_STRNLEN_USER
117 select HAS_IOPORT if MMU !! 45 select MODULES_USE_ELF_RELA
118 select HAVE_ARCH_AUDITSYSCALL !! 46 select PCI_SYSCALL if PCI
119 select HAVE_ARCH_HUGE_VMALLOC if HAVE_ !! 47 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
120 select HAVE_ARCH_HUGE_VMAP if MMU && 6 !! 48 select ODD_RT_SIGACTION
121 select HAVE_ARCH_JUMP_LABEL if !XIP_KE !! 49 select OLD_SIGSUSPEND
122 select HAVE_ARCH_JUMP_LABEL_RELATIVE i !! 50 select CPU_NO_EFFICIENT_FFS
123 select HAVE_ARCH_KASAN if MMU && 64BIT !! 51 select LOCKDEP_SMALL if LOCKDEP
124 select HAVE_ARCH_KASAN_VMALLOC if MMU !! 52 select NEED_DMA_MAP_STATE
125 select HAVE_ARCH_KFENCE if MMU && 64BI !! 53 select NEED_SG_DMA_LENGTH
126 select HAVE_ARCH_KGDB if !XIP_KERNEL !! 54 select SET_FS
127 select HAVE_ARCH_KGDB_QXFER_PKT !! 55
128 select HAVE_ARCH_MMAP_RND_BITS if MMU !! 56 config SPARC32
129 select HAVE_ARCH_MMAP_RND_COMPAT_BITS !! 57 def_bool !64BIT
130 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS !! 58 select ARCH_32BIT_OFF_T
131 select HAVE_ARCH_SECCOMP_FILTER !! 59 select ARCH_HAS_CPU_FINALIZE_INIT if !SMP
132 select HAVE_ARCH_STACKLEAK !! 60 select ARCH_HAS_SYNC_DMA_FOR_CPU
133 select HAVE_ARCH_THREAD_STRUCT_WHITELI !! 61 select GENERIC_ATOMIC64
134 select HAVE_ARCH_TRACEHOOK !! 62 select CLZ_TAB
135 select HAVE_ARCH_TRANSPARENT_HUGEPAGE !! 63 select HAVE_UID16
136 select HAVE_ARCH_USERFAULTFD_MINOR if !! 64 select OLD_SIGACTION
137 select HAVE_ARCH_VMAP_STACK if MMU && !! 65
138 select HAVE_ASM_MODVERSIONS !! 66 config SPARC64
139 select HAVE_CONTEXT_TRACKING_USER !! 67 def_bool 64BIT
140 select HAVE_DEBUG_KMEMLEAK !! 68 select HAVE_FUNCTION_TRACER
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 69 select HAVE_FUNCTION_GRAPH_TRACER
147 select HAVE_FUNCTION_GRAPH_RETVAL if H !! 70 select HAVE_KRETPROBES
148 select HAVE_FUNCTION_TRACER if !XIP_KE !! 71 select HAVE_KPROBES
149 select HAVE_EBPF_JIT if MMU !! 72 select MMU_GATHER_RCU_TABLE_FREE if SMP
150 select HAVE_GUP_FAST if MMU !! 73 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
151 select HAVE_FUNCTION_ARG_ACCESS_API !! 74 select HAVE_DYNAMIC_FTRACE
152 select HAVE_FUNCTION_ERROR_INJECTION !! 75 select HAVE_FTRACE_MCOUNT_RECORD
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 76 select HAVE_SYSCALL_TRACEPOINTS
185 select HOTPLUG_CORE_SYNC_DEAD if HOTPL !! 77 select HAVE_CONTEXT_TRACKING
186 select IRQ_DOMAIN !! 78 select HAVE_TIF_NOHZ
187 select IRQ_FORCED_THREADING !! 79 select HAVE_DEBUG_KMEMLEAK
188 select KASAN_VMALLOC if KASAN !! 80 select IOMMU_HELPER
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 81 select SPARSE_IRQ
205 select SYSCTL_EXCEPTION_TRACE !! 82 select RTC_DRV_CMOS
206 select THREAD_INFO_IN_TASK !! 83 select RTC_DRV_BQ4802
207 select TRACE_IRQFLAGS_SUPPORT !! 84 select RTC_DRV_SUN4V
208 select UACCESS_MEMCPY if !MMU !! 85 select RTC_DRV_STARFIRE
209 select USER_STACKTRACE_SUPPORT !! 86 select HAVE_PERF_EVENTS
210 select ZONE_DMA32 if 64BIT !! 87 select PERF_USE_VMALLOC
211 !! 88 select ARCH_HAVE_NMI_SAFE_CMPXCHG
212 config RUSTC_SUPPORTS_RISCV !! 89 select HAVE_C_RECORDMCOUNT
213 def_bool y !! 90 select HAVE_ARCH_AUDITSYSCALL
214 depends on 64BIT !! 91 select ARCH_SUPPORTS_ATOMIC_RMW
215 # Shadow call stack requires rustc ver !! 92 select HAVE_NMI
216 # -Zsanitizer=shadow-call-stack flag. !! 93 select HAVE_REGS_AND_STACK_ACCESS_API
217 depends on !SHADOW_CALL_STACK || RUSTC !! 94 select ARCH_USE_QUEUED_RWLOCKS
218 !! 95 select ARCH_USE_QUEUED_SPINLOCKS
219 config CLANG_SUPPORTS_DYNAMIC_FTRACE !! 96 select GENERIC_TIME_VSYSCALL
220 def_bool CC_IS_CLANG !! 97 select ARCH_CLOCKSOURCE_DATA
221 # https://github.com/ClangBuiltLinux/l !! 98 select ARCH_HAS_PTE_SPECIAL
222 depends on AS_IS_GNU || (AS_IS_LLVM && !! 99 select PCI_DOMAINS if PCI
223 !! 100 select ARCH_HAS_GIGANTIC_PAGE
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) <<
232 101
233 config RISCV_USE_LINKER_RELAXATION !! 102 config ARCH_PROC_KCORE_TEXT
234 def_bool y 103 def_bool y
235 # https://github.com/llvm/llvm-project <<
236 depends on !LD_IS_LLD || LLD_VERSION > <<
237 104
238 # https://github.com/llvm/llvm-project/commit/ !! 105 config CPU_BIG_ENDIAN
239 config ARCH_HAS_BROKEN_DWARF5 <<
240 def_bool y 106 def_bool y
241 depends on RISCV_USE_LINKER_RELAXATION <<
242 # https://github.com/llvm/llvm-project <<
243 depends on AS_IS_LLVM && AS_VERSION < <<
244 # https://github.com/llvm/llvm-project <<
245 depends on LD_IS_LLD && LLD_VERSION < <<
246 <<
247 config ARCH_MMAP_RND_BITS_MIN <<
248 default 18 if 64BIT <<
249 default 8 <<
250 <<
251 config ARCH_MMAP_RND_COMPAT_BITS_MIN <<
252 default 8 <<
253 <<
254 # max bits determined by the following formula <<
255 # VA_BITS - PAGE_SHIFT - 3 <<
256 config ARCH_MMAP_RND_BITS_MAX <<
257 default 24 if 64BIT # SV39 based <<
258 default 17 <<
259 107
260 config ARCH_MMAP_RND_COMPAT_BITS_MAX !! 108 config ARCH_ATU
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 <<
268 help <<
269 Select this option if you want to ru <<
270 without the assistance of any other <<
271 <<
272 # set if we are running in S-mode and can use <<
273 config RISCV_SBI <<
274 bool 109 bool
275 depends on !RISCV_M_MODE !! 110 default y if SPARC64
276 default y <<
277 <<
278 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 <<
312 111
313 config STACKTRACE_SUPPORT 112 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 113 bool
>> 114 default y if SPARC64
323 115
324 config GENERIC_CALIBRATE_DELAY !! 116 config LOCKDEP_SUPPORT
325 def_bool y !! 117 bool
326 !! 118 default y if SPARC64
327 config GENERIC_CSUM <<
328 def_bool y <<
329 119
330 config GENERIC_HWEIGHT !! 120 config ARCH_HIBERNATION_POSSIBLE
331 def_bool y !! 121 def_bool y if SPARC64
332 122
333 config FIX_EARLYCON_MEM !! 123 config AUDIT_ARCH
334 def_bool MMU !! 124 bool
>> 125 default y
335 126
336 config ILLEGAL_POINTER_VALUE !! 127 config HAVE_SETUP_PER_CPU_AREA
337 hex !! 128 def_bool y if SPARC64
338 default 0 if 32BIT <<
339 default 0xdead000000000000 if 64BIT <<
340 129
341 config PGTABLE_LEVELS !! 130 config NEED_PER_CPU_EMBED_FIRST_CHUNK
342 int !! 131 def_bool y if SPARC64
343 default 5 if 64BIT <<
344 default 2 <<
345 132
346 config LOCKDEP_SUPPORT !! 133 config NEED_PER_CPU_PAGE_FIRST_CHUNK
347 def_bool y !! 134 def_bool y if SPARC64
348 135
349 config RISCV_DMA_NONCOHERENT !! 136 config MMU
350 bool 137 bool
351 select ARCH_HAS_DMA_PREP_COHERENT !! 138 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 <<
356 139
357 config RISCV_NONSTANDARD_CACHE_OPS !! 140 config HIGHMEM
358 bool 141 bool
359 help !! 142 default y if SPARC32
360 This enables function pointer suppor <<
361 systems to handle cache management. <<
362 <<
363 config AS_HAS_INSN <<
364 def_bool $(as-instr,.insn r 51$(comma) <<
365 143
366 config AS_HAS_OPTION_ARCH !! 144 config ZONE_DMA
367 # https://github.com/llvm/llvm-project !! 145 bool
368 def_bool y !! 146 default y if SPARC32
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" <<
375 147
376 config NONPORTABLE !! 148 config GENERIC_ISA_DMA
377 bool "Allow configurations that result !! 149 bool
378 help !! 150 default y if SPARC32
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. <<
383 151
384 Selecting N does not guarantee kerne !! 152 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
385 systems. Selecting any of the optio !! 153 def_bool y if SPARC64
386 result in kernel binaries that are u <<
387 systems. <<
388 154
389 If unsure, say N. !! 155 config PGTABLE_LEVELS
>> 156 default 4 if 64BIT
>> 157 default 3
390 158
391 choice !! 159 config ARCH_SUPPORTS_UPROBES
392 prompt "Base ISA" !! 160 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 <<
428 161
429 config MODULE_SECTIONS !! 162 menu "Processor type and features"
430 bool <<
431 select HAVE_MOD_ARCH_SPECIFIC <<
432 163
433 config SMP 164 config SMP
434 bool "Symmetric Multi-Processing" !! 165 bool "Symmetric multi-processing support"
435 help 166 help
436 This enables support for systems wit !! 167 This enables support for systems with more than one CPU. If you have
437 you say N here, the kernel will run !! 168 a system with only one CPU, say N. If you have a system with more
438 multiprocessor machines, but will us !! 169 than one CPU, say Y.
439 multiprocessor machine. If you say Y !! 170
440 on many, but not all, single process !! 171 If you say N here, the kernel will run on uni- and multiprocessor
441 processor machine, the kernel will r !! 172 machines, but will use only one CPU of a multiprocessor machine. If
442 here. !! 173 you say Y here, the kernel will run on many, but not all,
>> 174 uniprocessor machines. On a uniprocessor machine, the kernel
>> 175 will run faster if you say N here.
>> 176
>> 177 People using multiprocessor machines who say Y here should also say
>> 178 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 179 Management" code will be disabled if you say Y here.
443 180
444 If you don't know what to do here, s !! 181 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
>> 182 available at <http://www.tldp.org/docs.html#howto>.
445 183
446 config SCHED_MC !! 184 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 <<
453 185
454 config NR_CPUS 186 config NR_CPUS
455 int "Maximum number of CPUs (2-512)" !! 187 int "Maximum number of CPUs"
456 depends on SMP 188 depends on SMP
457 range 2 512 if !RISCV_SBI_V01 !! 189 range 2 32 if SPARC32
458 range 2 32 if RISCV_SBI_V01 && 32BIT !! 190 range 2 4096 if SPARC64
459 range 2 64 if RISCV_SBI_V01 && 64BIT !! 191 default 32 if SPARC32
460 default "32" if 32BIT !! 192 default 4096 if SPARC64
461 default "64" if 64BIT <<
462 193
463 config HOTPLUG_CPU !! 194 source "kernel/Kconfig.hz"
464 bool "Support for hot-pluggable CPUs" <<
465 depends on SMP <<
466 select GENERIC_IRQ_MIGRATION <<
467 help <<
468 <<
469 Say Y here to experiment with turnin <<
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 <<
481 endchoice <<
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 <<
508 195
509 config RISCV_ALTERNATIVE !! 196 config GENERIC_HWEIGHT
510 bool 197 bool
511 depends on !XIP_KERNEL !! 198 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 <<
517 199
518 config RISCV_ALTERNATIVE_EARLY !! 200 config GENERIC_CALIBRATE_DELAY
519 bool 201 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 202 default y
527 help <<
528 Adds "C" to the ISA subsets that the <<
529 when building Linux, which results i <<
530 Linux binary. <<
531 <<
532 If you don't know what to do here, s <<
533 203
534 config RISCV_ISA_SVNAPOT !! 204 config ARCH_MAY_HAVE_PC_FDC
535 bool "Svnapot extension support for su !! 205 bool
536 depends on 64BIT && MMU <<
537 depends on RISCV_ALTERNATIVE <<
538 default y 206 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 <<
550 207
551 If you don't know what to do here, s !! 208 config EMULATED_CMPXCHG
552 !! 209 bool
553 config RISCV_ISA_SVPBMT !! 210 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 211 help
559 Adds support to dynamically detect !! 212 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
560 ISA-extension (Supervisor-mode: pag !! 213 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 <<
569 If you don't know what to do here, <<
570 214
571 config TOOLCHAIN_HAS_V !! 215 # Makefile helpers
>> 216 config SPARC32_SMP
572 bool 217 bool
573 default y 218 default y
574 depends on !64BIT || $(cc-option,-mabi !! 219 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 <<
578 220
579 config RISCV_ISA_V !! 221 config SPARC64_SMP
580 bool "VECTOR extension support" !! 222 bool
581 depends on TOOLCHAIN_HAS_V <<
582 depends on FPU <<
583 select DYNAMIC_SIGFRAME <<
584 default y 223 default y
585 help !! 224 depends on SPARC64 && SMP
586 Say N here if you want to disable al <<
587 in the kernel. <<
588 225
589 If you don't know what to do here, s !! 226 config EARLYFB
590 !! 227 bool "Support for early boot text console"
591 config RISCV_ISA_V_DEFAULT_ENABLE <<
592 bool "Enable userspace Vector by defau <<
593 depends on RISCV_ISA_V <<
594 default y 228 default y
>> 229 depends on SPARC64
595 help 230 help
596 Say Y here if you want to enable Vec !! 231 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 <<
600 If you don't know what to do here, s <<
601 <<
602 config RISCV_ISA_V_UCOPY_THRESHOLD <<
603 int "Threshold size for vectorized use <<
604 depends on RISCV_ISA_V <<
605 default 768 <<
606 help <<
607 Prefer using vectorized copy_to_user <<
608 workload size exceeds this value. <<
609 232
610 config RISCV_ISA_V_PREEMPTIVE !! 233 config HOTPLUG_CPU
611 bool "Run kernel-mode Vector with kern !! 234 bool "Support for hot-pluggable CPUs"
612 depends on PREEMPTION !! 235 depends on SPARC64 && SMP
613 depends on RISCV_ISA_V <<
614 default y <<
615 help 236 help
616 Usually, in-kernel SIMD routines are !! 237 Say Y here to experiment with turning CPUs off and on. CPUs
617 Functions which envoke long running !! 238 can be controlled through /sys/devices/system/cpu/cpu#.
618 vector unit to prevent blocking othe !! 239 Say N if you want to disable CPU hotplug.
619 240
620 This config allows kernel to run SIM !! 241 if SPARC64
621 preemption. Enabling this config wil !! 242 source "drivers/cpufreq/Kconfig"
622 consumption due to the allocation of !! 243 endif
623 244
624 config RISCV_ISA_ZAWRS !! 245 config US3_MC
625 bool "Zawrs extension support for more !! 246 tristate "UltraSPARC-III Memory Controller driver"
626 depends on RISCV_ALTERNATIVE !! 247 depends on SPARC64
627 default y 248 default y
628 help 249 help
629 The Zawrs extension defines instruct !! 250 This adds a driver for the UltraSPARC-III memory controller.
630 which allow a hart to enter a low-po !! 251 Loading this driver allows exact mnemonic strings to be
631 hypervisor while waiting on a store !! 252 printed in the event of a memory error, so that the faulty DIMM
632 use of these instructions in the ker !! 253 on the motherboard can be matched to the error.
633 detected at boot. <<
634 254
635 If you don't know what to do here, s !! 255 If in doubt, say Y, as this information can be very useful.
636 256
637 config TOOLCHAIN_HAS_ZBB !! 257 # Global things across all Sun machines.
>> 258 config GENERIC_LOCKBREAK
638 bool 259 bool
639 default y 260 default y
640 depends on !64BIT || $(cc-option,-mabi !! 261 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 <<
644 262
645 # This symbol indicates that the toolchain sup !! 263 config NUMA
646 # extensions, including Zvk*, Zvbb, and Zvbc. !! 264 bool "NUMA support"
647 # binutils added all except Zvkb, then added Z !! 265 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 <<
651 266
652 config RISCV_ISA_ZBA !! 267 config NODES_SHIFT
653 bool "Zba extension support for bit ma !! 268 int "Maximum NUMA Nodes (as a power of 2)"
654 default y !! 269 range 4 5 if SPARC64
>> 270 default "5"
>> 271 depends on NEED_MULTIPLE_NODES
655 help 272 help
656 Add support for enabling optimisati !! 273 Specify the maximum number of NUMA Nodes available on the target
657 extension is detected at boot. !! 274 system. Increases memory reserved to accommodate various tables.
658 <<
659 The Zba extension provides instruct <<
660 of addresses that index into arrays <<
661 275
662 If you don't know what to do here, !! 276 config ARCH_SPARSEMEM_ENABLE
>> 277 def_bool y if SPARC64
>> 278 select SPARSEMEM_VMEMMAP_ENABLE
663 279
664 config RISCV_ISA_ZBB !! 280 config ARCH_SPARSEMEM_DEFAULT
665 bool "Zbb extension support for bit ma !! 281 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) <<
672 282
673 The Zbb extension provides instruct !! 283 config FORCE_MAX_ZONEORDER
674 of bit-specific operations (count b !! 284 int "Maximum zone order"
675 bitrotation, etc). !! 285 default "13"
>> 286 help
>> 287 The kernel memory allocator divides physically contiguous memory
>> 288 blocks into "zones", where each zone is a power of two number of
>> 289 pages. This option selects the largest power of two that the kernel
>> 290 keeps in the memory allocator. If you need to allocate very large
>> 291 blocks of physically contiguous memory, then you may need to
>> 292 increase this value.
676 293
677 If you don't know what to do here, !! 294 This config option is actually maximum order plus one. For example,
>> 295 a value of 13 means that the largest free memory block is 2^12 pages.
678 296
679 config TOOLCHAIN_HAS_ZBC !! 297 if SPARC64 || COMPILE_TEST
680 bool !! 298 source "kernel/power/Kconfig"
681 default y !! 299 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 <<
686 300
687 config RISCV_ISA_ZBC !! 301 config SCHED_SMT
688 bool "Zbc extension support for carry- !! 302 bool "SMT (Hyperthreading) scheduler support"
689 depends on TOOLCHAIN_HAS_ZBC !! 303 depends on SPARC64 && SMP
690 depends on MMU <<
691 depends on RISCV_ALTERNATIVE <<
692 default y 304 default y
693 help 305 help
694 Adds support to dynamically detect !! 306 SMT scheduler support improves the CPU scheduler's decision making
695 extension (carry-less multiplicatio !! 307 when dealing with SPARC cpus at a cost of slightly increased overhead
696 !! 308 in some places. If unsure say N here.
697 The Zbc extension could accelerate <<
698 calculations. <<
699 <<
700 If you don't know what to do here, <<
701 309
702 config RISCV_ISA_ZICBOM !! 310 config SCHED_MC
703 bool "Zicbom extension support for non !! 311 bool "Multi-core scheduler support"
704 depends on MMU !! 312 depends on SPARC64 && SMP
705 depends on RISCV_ALTERNATIVE <<
706 default y 313 default y
707 select RISCV_DMA_NONCOHERENT <<
708 select DMA_DIRECT_REMAP <<
709 help 314 help
710 Adds support to dynamically detect !! 315 Multi-core scheduler support improves the CPU scheduler's decision
711 extension (Cache Block Management O !! 316 making when dealing with multi-core CPU chips at a cost of slightly
712 usage. !! 317 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 <<
716 318
717 If you don't know what to do here, !! 319 config CMDLINE_BOOL
>> 320 bool "Default bootloader kernel arguments"
>> 321 depends on SPARC64
718 322
719 config RISCV_ISA_ZICBOZ !! 323 config CMDLINE
720 bool "Zicboz extension support for fas !! 324 string "Initial kernel command string"
721 depends on RISCV_ALTERNATIVE !! 325 depends on CMDLINE_BOOL
722 default y !! 326 default "console=ttyS0,9600 root=/dev/sda1"
723 help 327 help
724 Enable the use of the Zicboz extens !! 328 Say Y here if you want to be able to pass default arguments to
725 when available. !! 329 the kernel. This will be overridden by the bootloader, if you
726 !! 330 use one (such as SILO). This is most useful if you want to boot
727 The Zicboz extension is used for fa !! 331 a kernel from TFTP, and want default options to be available
728 !! 332 with having them passed on the command line.
729 If you don't know what to do here, <<
730 333
731 config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI !! 334 NOTE: This option WILL override the PROM bootargs setting!
732 def_bool y <<
733 # https://sourceware.org/git/?p=binuti <<
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 <<
746 335
747 config TOOLCHAIN_NEEDS_OLD_ISA_SPEC !! 336 config SUN_PM
748 def_bool y !! 337 bool
749 depends on TOOLCHAIN_NEEDS_EXPLICIT_ZI !! 338 default y if SPARC32
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 339 help
754 Certain versions of clang and GCC do !! 340 Enable power management and CPU standby features on supported
755 -march. This option causes an older !! 341 SPARC platforms.
756 versions of clang and GCC to be pass <<
757 as passing zicsr and zifencei to -ma <<
758 342
759 config FPU !! 343 config SPARC_LED
760 bool "FPU support" !! 344 tristate "Sun4m LED driver"
761 default y !! 345 depends on SPARC32
762 help 346 help
763 Say N here if you want to disable al !! 347 This driver toggles the front-panel LED on sun4m systems
764 in the kernel. !! 348 in a user-specifiable manner. Its state can be probed
>> 349 by reading /proc/led and its blinking mode can be changed
>> 350 via writes to /proc/led
765 351
766 If you don't know what to do here, s !! 352 config SERIAL_CONSOLE
767 !! 353 bool
768 config IRQ_STACKS !! 354 depends on SPARC32
769 bool "Independent irq & softirq stacks <<
770 default y 355 default y
771 select HAVE_IRQ_EXIT_ON_IRQ_STACK <<
772 select HAVE_SOFTIRQ_ON_OWN_STACK <<
773 help 356 help
774 Add independent irq & softirq stacks !! 357 If you say Y here, it will be possible to use a serial port as the
775 overflows. We may save some memory f !! 358 system console (the system console is the device which receives all
>> 359 kernel messages and warnings and which allows logins in single user
>> 360 mode). This could be useful if some terminal or printer is connected
>> 361 to that serial port.
776 362
777 config THREAD_SIZE_ORDER !! 363 Even if you say Y here, the currently visible virtual console
778 int "Kernel stack size (in power-of-tw !! 364 (/dev/tty0) will still be used as the system console by default, but
779 range 0 4 !! 365 you can alter that using a kernel command line option such as
780 default 1 if 32BIT !! 366 "console=ttyS1". (Try "man bootparam" or see the documentation of
781 default 2 !! 367 your boot loader (silo) about how to pass options to the kernel at
782 help !! 368 boot time.)
783 Specify the Pages of thread stack si <<
784 affects irq stack size, which is equ <<
785 369
786 config RISCV_MISALIGNED !! 370 If you don't have a graphics card installed and you say Y here, the
787 bool !! 371 kernel will automatically use the first serial line, /dev/ttyS0, as
788 select SYSCTL_ARCH_UNALIGN_ALLOW !! 372 system console.
789 help <<
790 Embed support for emulating misalign <<
791 373
792 choice !! 374 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. <<
800 375
801 config RISCV_PROBE_UNALIGNED_ACCESS !! 376 config SPARC_LEON
802 bool "Probe for hardware unaligned acc !! 377 bool "Sparc Leon processor family"
803 select RISCV_MISALIGNED !! 378 depends on SPARC32
>> 379 select USB_EHCI_BIG_ENDIAN_MMIO
>> 380 select USB_EHCI_BIG_ENDIAN_DESC
>> 381 select USB_UHCI_BIG_ENDIAN_MMIO
>> 382 select USB_UHCI_BIG_ENDIAN_DESC
804 help 383 help
805 During boot, the kernel will run a s !! 384 If you say Y here if you are running on a SPARC-LEON processor.
806 speed of unaligned accesses. This pr !! 385 The LEON processor is a synthesizable VHDL model of the
807 the speed of unaligned accesses on t !! 386 SPARC-v8 standard. LEON is part of the GRLIB collection of
808 memory accesses trap into the kernel !! 387 IP cores that are distributed under GPL. GRLIB can be downloaded
809 system, the kernel will emulate the !! 388 from www.gaisler.com. You can download a sparc-linux cross-compilation
810 UABI. !! 389 toolchain at www.gaisler.com.
811 390
812 config RISCV_EMULATED_UNALIGNED_ACCESS !! 391 if SPARC_LEON
813 bool "Emulate unaligned access where s !! 392 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 <<
820 393
821 config RISCV_SLOW_UNALIGNED_ACCESS !! 394 config UBOOT_LOAD_ADDR
822 bool "Assume the system supports slow !! 395 hex "uImage Load Address"
823 depends on NONPORTABLE !! 396 default 0x40004000
824 help 397 help
825 Assume that the system supports slow !! 398 U-Boot kernel load address, the address in physical address space
826 kernel and userspace programs may no !! 399 where u-boot will place the Linux kernel before booting it.
827 that do not support unaligned memory !! 400 This address is normally the base address of main memory + 0x4000.
828 401
829 config RISCV_EFFICIENT_UNALIGNED_ACCESS !! 402 config UBOOT_FLASH_ADDR
830 bool "Assume the system supports fast !! 403 hex "uImage.o Load Address"
831 depends on NONPORTABLE !! 404 default 0x00080000
832 select DCACHE_WORD_ACCESS if MMU <<
833 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
834 help 405 help
835 Assume that the system supports fast !! 406 Optional setting only affecting the uImage.o ELF-image used to
836 enabled, this option improves the pe !! 407 download the uImage file to the target using a ELF-loader other than
837 systems. However, the kernel and use !! 408 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 !! 409 the GRMON utility before even starting u-boot.
839 support efficient unaligned memory a <<
840 410
841 endchoice !! 411 config UBOOT_ENTRY_ADDR
842 !! 412 hex "uImage Entry Address"
843 source "arch/riscv/Kconfig.vendor" !! 413 default 0xf0004000
844 <<
845 endmenu # "Platform type" <<
846 <<
847 menu "Kernel features" <<
848 <<
849 source "kernel/Kconfig.hz" <<
850 <<
851 config RISCV_SBI_V01 <<
852 bool "SBI v0.1 support" <<
853 depends on RISCV_SBI <<
854 help 414 help
855 This config allows kernel to use SBI !! 415 Do not change this unless you know what you're doing. This is
856 deprecated in future once legacy M-m !! 416 hardcoded by the SPARC32 and LEON port.
857 417
858 config RISCV_BOOT_SPINWAIT !! 418 This is the virtual address u-boot jumps to when booting the Linux
859 bool "Spinwait booting method" !! 419 Kernel.
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. <<
875 420
876 If unsure what to do here, say N. !! 421 endmenu
>> 422 endif
877 423
878 config ARCH_SUPPORTS_KEXEC !! 424 endmenu
879 def_bool y <<
880 <<
881 config ARCH_SELECTS_KEXEC <<
882 def_bool y <<
883 depends on KEXEC <<
884 select HOTPLUG_CPU if SMP <<
885 <<
886 config ARCH_SUPPORTS_KEXEC_FILE <<
887 def_bool 64BIT <<
888 425
889 config ARCH_SELECTS_KEXEC_FILE !! 426 menu "Bus options (PCI etc.)"
890 def_bool y !! 427 config SBUS
891 depends on KEXEC_FILE !! 428 bool
892 select HAVE_IMA_KEXEC if IMA !! 429 default y
893 select KEXEC_ELF <<
894 <<
895 config ARCH_SUPPORTS_KEXEC_PURGATORY <<
896 def_bool ARCH_SUPPORTS_KEXEC_FILE <<
897 <<
898 config ARCH_SUPPORTS_CRASH_DUMP <<
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 <<
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 <<
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 <<
997 430
998 config CMDLINE_EXTEND !! 431 config SBUSCHAR
999 bool "Extend bootloader kernel argumen !! 432 bool
1000 help !! 433 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 434
1006 config CMDLINE_FORCE !! 435 config SUN_LDOMS
1007 bool "Always use the default kernel c !! 436 bool "Sun Logical Domains support"
>> 437 depends on SPARC64
1008 help 438 help
1009 Always use the built-in command lin !! 439 Say Y here is you want to support virtual devices via
1010 boot. This is useful in case you ne !! 440 Logical Domains.
1011 command line on systems where you d <<
1012 over it. <<
1013 441
1014 endchoice !! 442 config PCIC_PCI
>> 443 bool
>> 444 depends on PCI && SPARC32 && !SPARC_LEON
>> 445 default y
1015 446
1016 config EFI_STUB !! 447 config LEON_PCI
1017 bool 448 bool
>> 449 depends on PCI && SPARC_LEON
>> 450 default y
1018 451
1019 config EFI !! 452 config SPARC_GRPCI1
1020 bool "UEFI runtime support" !! 453 bool "GRPCI Host Bridge Support"
1021 depends on OF && !XIP_KERNEL !! 454 depends on LEON_PCI
1022 depends on MMU <<
1023 default y 455 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 456 help
1033 This option provides support for ru !! 457 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
1034 by UEFI firmware (such as non-volat !! 458 PCI host controller is typically found in GRLIB SPARC32/LEON
1035 clock, and platform reset). A UEFI !! 459 systems. The driver has one property (all_pci_errors) controlled
1036 allow the kernel to be booted as an !! 460 from the bootloader that makes the GRPCI to generate interrupts
1037 is only useful on systems that have !! 461 on detected PCI Parity and System errors.
1038 462
1039 config DMI !! 463 config SPARC_GRPCI2
1040 bool "Enable support for SMBIOS (DMI) !! 464 bool "GRPCI2 Host Bridge Support"
1041 depends on EFI !! 465 depends on LEON_PCI
1042 default y 466 default y
1043 help 467 help
1044 This enables SMBIOS/DMI feature for !! 468 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 469
1053 config STACKPROTECTOR_PER_TASK !! 470 config SUN_OPENPROMFS
1054 def_bool y !! 471 tristate "Openprom tree appears in /proc/openprom"
1055 depends on !RANDSTRUCT <<
1056 depends on STACKPROTECTOR && CC_HAVE_ <<
1057 <<
1058 config PHYS_RAM_BASE_FIXED <<
1059 bool "Explicitly specified physical R <<
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 472 help
1132 Build a device tree into the Linux !! 473 If you say Y, the OpenPROM device tree will be available as a
1133 This option should be selected if n !! 474 virtual file system, which you can mount to /proc/openprom by "mount
1134 If unsure, say N. !! 475 -t openpromfs none /proc/openprom".
1135 476
>> 477 To compile the /proc/openprom support as a module, choose M here: the
>> 478 module will be called openpromfs.
1136 479
1137 config BUILTIN_DTB_SOURCE !! 480 Only choose N if you know in advance that you will not need to modify
1138 string "Built-in device tree source" !! 481 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 482
1147 config PORTABLE !! 483 # Makefile helpers
>> 484 config SPARC64_PCI
1148 bool 485 bool
1149 default !NONPORTABLE !! 486 default y
1150 select EFI !! 487 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 488
1174 source "drivers/cpuidle/Kconfig" !! 489 config SPARC64_PCI_MSI
>> 490 bool
>> 491 default y
>> 492 depends on SPARC64_PCI && PCI_MSI
1175 493
1176 source "drivers/cpufreq/Kconfig" !! 494 endmenu
1177 495
1178 endmenu # "CPU Power Management" !! 496 config COMPAT
>> 497 bool
>> 498 depends on SPARC64
>> 499 default y
>> 500 select COMPAT_BINFMT_ELF if BINFMT_ELF
>> 501 select HAVE_UID16
>> 502 select ARCH_WANT_OLD_COMPAT_IPC
>> 503 select COMPAT_OLD_SIGACTION
1179 504
1180 source "arch/riscv/kvm/Kconfig" !! 505 config SYSVIPC_COMPAT
>> 506 bool
>> 507 depends on COMPAT && SYSVIPC
>> 508 default y
1181 509
1182 source "drivers/acpi/Kconfig" !! 510 source "drivers/sbus/char/Kconfig"
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