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 1 config 64BIT
8 bool !! 2 bool "64-bit kernel" if "$(ARCH)" = "sparc"
>> 3 default "$(ARCH)" = "sparc64"
>> 4 help
>> 5 SPARC is a family of RISC microprocessors designed and marketed by
>> 6 Sun Microsystems, incorporated. They are very widely found in Sun
>> 7 workstations and clones.
9 8
10 config 32BIT !! 9 Say yes to build a 64-bit kernel - formerly known as sparc64
11 bool !! 10 Say no to build a 32-bit kernel - formerly known as sparc
12 11
13 config RISCV !! 12 config SPARC
14 def_bool y !! 13 bool
15 select ACPI_GENERIC_GSI if ACPI !! 14 default y
16 select ACPI_MCFG if (ACPI && PCI) !! 15 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
17 select ACPI_PPTT if ACPI !! 16 select ARCH_MIGHT_HAVE_PC_SERIO
18 select ACPI_REDUCED_HARDWARE_ONLY if A !! 17 select OF
19 select ACPI_SPCR_TABLE if ACPI !! 18 select OF_PROMTREE
20 select ARCH_DMA_DEFAULT_COHERENT !! 19 select HAVE_IDE
21 select ARCH_ENABLE_HUGEPAGE_MIGRATION !! 20 select HAVE_OPROFILE
22 select ARCH_ENABLE_MEMORY_HOTPLUG if S !! 21 select HAVE_ARCH_KGDB if !SMP || SPARC64
23 select ARCH_ENABLE_MEMORY_HOTREMOVE if !! 22 select HAVE_ARCH_TRACEHOOK
24 select ARCH_ENABLE_SPLIT_PMD_PTLOCK if !! 23 select HAVE_EXIT_THREAD
25 select ARCH_ENABLE_THP_MIGRATION if TR !! 24 select HAVE_PCI
26 select ARCH_HAS_BINFMT_FLAT !! 25 select SYSCTL_EXCEPTION_TRACE
27 select ARCH_HAS_CURRENT_STACK_POINTER !! 26 select RTC_CLASS
28 select ARCH_HAS_DEBUG_VIRTUAL if MMU !! 27 select RTC_DRV_M48T59
29 select ARCH_HAS_DEBUG_VM_PGTABLE !! 28 select RTC_SYSTOHC
30 select ARCH_HAS_DEBUG_WX !! 29 select HAVE_ARCH_JUMP_LABEL if SPARC64
31 select ARCH_HAS_FAST_MULTIPLIER <<
32 select ARCH_HAS_FORTIFY_SOURCE <<
33 select ARCH_HAS_GCOV_PROFILE_ALL <<
34 select ARCH_HAS_GIGANTIC_PAGE <<
35 select ARCH_HAS_KCOV <<
36 select ARCH_HAS_KERNEL_FPU_SUPPORT if <<
37 select ARCH_HAS_MEMBARRIER_CALLBACKS <<
38 select ARCH_HAS_MEMBARRIER_SYNC_CORE <<
39 select ARCH_HAS_MMIOWB <<
40 select ARCH_HAS_NON_OVERLAPPING_ADDRES <<
41 select ARCH_HAS_PMEM_API <<
42 select ARCH_HAS_PREPARE_SYNC_CORE_CMD <<
43 select ARCH_HAS_PTE_DEVMAP if 64BIT && <<
44 select ARCH_HAS_PTE_SPECIAL <<
45 select ARCH_HAS_SET_DIRECT_MAP if MMU <<
46 select ARCH_HAS_SET_MEMORY if MMU <<
47 select ARCH_HAS_STRICT_KERNEL_RWX if M <<
48 select ARCH_HAS_STRICT_MODULE_RWX if M <<
49 select ARCH_HAS_SYNC_CORE_BEFORE_USERM <<
50 select ARCH_HAS_SYSCALL_WRAPPER <<
51 select ARCH_HAS_TICK_BROADCAST if GENE <<
52 select ARCH_HAS_UBSAN <<
53 select ARCH_HAS_VDSO_DATA <<
54 select ARCH_KEEP_MEMBLOCK if ACPI <<
55 select ARCH_MHP_MEMMAP_ON_MEMORY_ENABL <<
56 select ARCH_OPTIONAL_KERNEL_RWX if ARC <<
57 select ARCH_OPTIONAL_KERNEL_RWX_DEFAUL <<
58 select ARCH_STACKWALK <<
59 select ARCH_SUPPORTS_ATOMIC_RMW <<
60 select ARCH_SUPPORTS_CFI_CLANG <<
61 select ARCH_SUPPORTS_DEBUG_PAGEALLOC i <<
62 select ARCH_SUPPORTS_HUGETLBFS if MMU <<
63 # LLD >= 14: https://github.com/llvm/l <<
64 select ARCH_SUPPORTS_LTO_CLANG if LLD_ <<
65 select ARCH_SUPPORTS_LTO_CLANG_THIN if <<
66 select ARCH_SUPPORTS_PAGE_TABLE_CHECK <<
67 select ARCH_SUPPORTS_PER_VMA_LOCK if M <<
68 select ARCH_SUPPORTS_RT <<
69 select ARCH_SUPPORTS_SHADOW_CALL_STACK <<
70 select ARCH_USE_CMPXCHG_LOCKREF if 64B <<
71 select ARCH_USE_MEMTEST <<
72 select ARCH_USE_QUEUED_RWLOCKS <<
73 select ARCH_USE_SYM_ANNOTATIONS <<
74 select ARCH_USES_CFI_TRAPS if CFI_CLAN <<
75 select ARCH_WANT_BATCHED_UNMAP_TLB_FLU <<
76 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_ <<
77 select ARCH_WANT_FRAME_POINTERS <<
78 select ARCH_WANT_GENERAL_HUGETLB if !R <<
79 select ARCH_WANT_HUGE_PMD_SHARE if 64B <<
80 select ARCH_WANT_LD_ORPHAN_WARN if !XI <<
81 select ARCH_WANT_OPTIMIZE_DAX_VMEMMAP <<
82 select ARCH_WANT_OPTIMIZE_HUGETLB_VMEM <<
83 select ARCH_WANTS_NO_INSTR <<
84 select ARCH_WANTS_THP_SWAP if HAVE_ARC <<
85 select BINFMT_FLAT_NO_DATA_START_OFFSE <<
86 select BUILDTIME_TABLE_SORT if MMU <<
87 select CLINT_TIMER if RISCV_M_MODE <<
88 select CLONE_BACKWARDS <<
89 select COMMON_CLK <<
90 select CPU_PM if CPU_IDLE || HIBERNATI <<
91 select EDAC_SUPPORT <<
92 select FRAME_POINTER if PERF_EVENTS || <<
93 select FTRACE_MCOUNT_USE_PATCHABLE_FUN <<
94 select GENERIC_ARCH_TOPOLOGY <<
95 select GENERIC_ATOMIC64 if !64BIT <<
96 select GENERIC_CLOCKEVENTS_BROADCAST i <<
97 select GENERIC_CPU_DEVICES <<
98 select GENERIC_CPU_VULNERABILITIES <<
99 select GENERIC_EARLY_IOREMAP <<
100 select GENERIC_ENTRY <<
101 select GENERIC_GETTIMEOFDAY if HAVE_GE <<
102 select GENERIC_IDLE_POLL_SETUP <<
103 select GENERIC_IOREMAP if MMU <<
104 select GENERIC_IRQ_IPI if SMP <<
105 select GENERIC_IRQ_IPI_MUX if SMP <<
106 select GENERIC_IRQ_MULTI_HANDLER <<
107 select GENERIC_IRQ_SHOW 30 select GENERIC_IRQ_SHOW
108 select GENERIC_IRQ_SHOW_LEVEL !! 31 select ARCH_WANT_IPC_PARSE_VERSION
109 select GENERIC_LIB_DEVMEM_IS_ALLOWED <<
110 select GENERIC_PCI_IOMAP 32 select GENERIC_PCI_IOMAP
111 select GENERIC_PTDUMP if MMU !! 33 select HAVE_NMI_WATCHDOG if SPARC64
112 select GENERIC_SCHED_CLOCK !! 34 select HAVE_CBPF_JIT if SPARC32
>> 35 select HAVE_EBPF_JIT if SPARC64
>> 36 select HAVE_DEBUG_BUGVERBOSE
113 select GENERIC_SMP_IDLE_THREAD 37 select GENERIC_SMP_IDLE_THREAD
114 select GENERIC_TIME_VSYSCALL if MMU && !! 38 select GENERIC_CLOCKEVENTS
115 select GENERIC_VDSO_TIME_NS if HAVE_GE !! 39 select GENERIC_STRNCPY_FROM_USER
116 select HARDIRQS_SW_RESEND !! 40 select GENERIC_STRNLEN_USER
117 select HAS_IOPORT if MMU !! 41 select MODULES_USE_ELF_RELA
118 select HAVE_ARCH_AUDITSYSCALL !! 42 select PCI_SYSCALL if PCI
119 select HAVE_ARCH_HUGE_VMALLOC if HAVE_ !! 43 select ODD_RT_SIGACTION
120 select HAVE_ARCH_HUGE_VMAP if MMU && 6 !! 44 select OLD_SIGSUSPEND
121 select HAVE_ARCH_JUMP_LABEL if !XIP_KE !! 45 select CPU_NO_EFFICIENT_FFS
122 select HAVE_ARCH_JUMP_LABEL_RELATIVE i !! 46 select LOCKDEP_SMALL if LOCKDEP
123 select HAVE_ARCH_KASAN if MMU && 64BIT !! 47 select NEED_DMA_MAP_STATE
124 select HAVE_ARCH_KASAN_VMALLOC if MMU !! 48 select NEED_SG_DMA_LENGTH
125 select HAVE_ARCH_KFENCE if MMU && 64BI !! 49
126 select HAVE_ARCH_KGDB if !XIP_KERNEL !! 50 config SPARC32
127 select HAVE_ARCH_KGDB_QXFER_PKT !! 51 def_bool !64BIT
128 select HAVE_ARCH_MMAP_RND_BITS if MMU !! 52 select ARCH_32BIT_OFF_T
129 select HAVE_ARCH_MMAP_RND_COMPAT_BITS !! 53 select ARCH_HAS_SYNC_DMA_FOR_CPU
130 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS !! 54 select GENERIC_ATOMIC64
131 select HAVE_ARCH_SECCOMP_FILTER !! 55 select CLZ_TAB
132 select HAVE_ARCH_STACKLEAK !! 56 select HAVE_UID16
133 select HAVE_ARCH_THREAD_STRUCT_WHITELI !! 57 select OLD_SIGACTION
134 select HAVE_ARCH_TRACEHOOK !! 58
135 select HAVE_ARCH_TRANSPARENT_HUGEPAGE !! 59 config SPARC64
136 select HAVE_ARCH_USERFAULTFD_MINOR if !! 60 def_bool 64BIT
137 select HAVE_ARCH_VMAP_STACK if MMU && !! 61 select HAVE_FUNCTION_TRACER
138 select HAVE_ASM_MODVERSIONS <<
139 select HAVE_CONTEXT_TRACKING_USER <<
140 select HAVE_DEBUG_KMEMLEAK <<
141 select HAVE_DMA_CONTIGUOUS if MMU <<
142 select HAVE_DYNAMIC_FTRACE if !XIP_KER <<
143 select HAVE_DYNAMIC_FTRACE_WITH_DIRECT <<
144 select HAVE_DYNAMIC_FTRACE_WITH_ARGS i <<
145 select HAVE_FTRACE_MCOUNT_RECORD if !X <<
146 select HAVE_FUNCTION_GRAPH_TRACER 62 select HAVE_FUNCTION_GRAPH_TRACER
147 select HAVE_FUNCTION_GRAPH_RETVAL if H !! 63 select HAVE_KRETPROBES
148 select HAVE_FUNCTION_TRACER if !XIP_KE !! 64 select HAVE_KPROBES
149 select HAVE_EBPF_JIT if MMU !! 65 select HAVE_RCU_TABLE_FREE if SMP
150 select HAVE_GUP_FAST if MMU !! 66 select HAVE_MEMBLOCK_NODE_MAP
151 select HAVE_FUNCTION_ARG_ACCESS_API !! 67 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
152 select HAVE_FUNCTION_ERROR_INJECTION !! 68 select HAVE_DYNAMIC_FTRACE
153 select HAVE_GCC_PLUGINS !! 69 select HAVE_FTRACE_MCOUNT_RECORD
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 70 select HAVE_SYSCALL_TRACEPOINTS
185 select HOTPLUG_CORE_SYNC_DEAD if HOTPL !! 71 select HAVE_CONTEXT_TRACKING
186 select IRQ_DOMAIN !! 72 select HAVE_DEBUG_KMEMLEAK
187 select IRQ_FORCED_THREADING !! 73 select IOMMU_HELPER
188 select KASAN_VMALLOC if KASAN <<
189 select LOCK_MM_AND_FIND_VMA <<
190 select MMU_GATHER_RCU_TABLE_FREE if SM <<
191 select MODULES_USE_ELF_RELA if MODULES <<
192 select OF <<
193 select OF_EARLY_FLATTREE <<
194 select OF_IRQ <<
195 select PCI_DOMAINS_GENERIC if PCI <<
196 select PCI_ECAM if (ACPI && PCI) <<
197 select PCI_MSI if PCI <<
198 select RISCV_ALTERNATIVE if !XIP_KERNE <<
199 select RISCV_APLIC <<
200 select RISCV_IMSIC <<
201 select RISCV_INTC <<
202 select RISCV_TIMER if RISCV_SBI <<
203 select SIFIVE_PLIC <<
204 select SPARSE_IRQ 74 select SPARSE_IRQ
205 select SYSCTL_EXCEPTION_TRACE !! 75 select RTC_DRV_CMOS
206 select THREAD_INFO_IN_TASK !! 76 select RTC_DRV_BQ4802
207 select TRACE_IRQFLAGS_SUPPORT !! 77 select RTC_DRV_SUN4V
208 select UACCESS_MEMCPY if !MMU !! 78 select RTC_DRV_STARFIRE
209 select USER_STACKTRACE_SUPPORT !! 79 select HAVE_PERF_EVENTS
210 select ZONE_DMA32 if 64BIT !! 80 select PERF_USE_VMALLOC
>> 81 select IRQ_PREFLOW_FASTEOI
>> 82 select ARCH_HAVE_NMI_SAFE_CMPXCHG
>> 83 select HAVE_C_RECORDMCOUNT
>> 84 select HAVE_ARCH_AUDITSYSCALL
>> 85 select ARCH_SUPPORTS_ATOMIC_RMW
>> 86 select HAVE_NMI
>> 87 select HAVE_REGS_AND_STACK_ACCESS_API
>> 88 select ARCH_USE_QUEUED_RWLOCKS
>> 89 select ARCH_USE_QUEUED_SPINLOCKS
>> 90 select GENERIC_TIME_VSYSCALL
>> 91 select ARCH_CLOCKSOURCE_DATA
>> 92 select ARCH_HAS_PTE_SPECIAL
>> 93 select PCI_DOMAINS if PCI
211 94
212 config RUSTC_SUPPORTS_RISCV !! 95 config ARCH_DEFCONFIG
213 def_bool y !! 96 string
214 depends on 64BIT !! 97 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
215 # Shadow call stack requires rustc ver !! 98 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
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 99
233 config RISCV_USE_LINKER_RELAXATION !! 100 config ARCH_PROC_KCORE_TEXT
234 def_bool y 101 def_bool y
235 # https://github.com/llvm/llvm-project <<
236 depends on !LD_IS_LLD || LLD_VERSION > <<
237 102
238 # https://github.com/llvm/llvm-project/commit/ !! 103 config CPU_BIG_ENDIAN
239 config ARCH_HAS_BROKEN_DWARF5 <<
240 def_bool y 104 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 <<
260 config ARCH_MMAP_RND_COMPAT_BITS_MAX <<
261 default 17 <<
262 <<
263 # set if we run in machine mode, cleared if we <<
264 config RISCV_M_MODE <<
265 bool "Build a kernel that runs in mach <<
266 depends on !MMU <<
267 default y <<
268 help <<
269 Select this option if you want to ru <<
270 without the assistance of any other <<
271 105
272 # set if we are running in S-mode and can use !! 106 config ARCH_ATU
273 config RISCV_SBI <<
274 bool 107 bool
275 depends on !RISCV_M_MODE !! 108 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 <<
312 109
313 config STACKTRACE_SUPPORT 110 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 111 bool
>> 112 default y if SPARC64
323 113
324 config GENERIC_CALIBRATE_DELAY !! 114 config LOCKDEP_SUPPORT
325 def_bool y !! 115 bool
326 !! 116 default y if SPARC64
327 config GENERIC_CSUM <<
328 def_bool y <<
329 117
330 config GENERIC_HWEIGHT !! 118 config ARCH_HIBERNATION_POSSIBLE
331 def_bool y !! 119 def_bool y if SPARC64
332 120
333 config FIX_EARLYCON_MEM !! 121 config AUDIT_ARCH
334 def_bool MMU !! 122 bool
>> 123 default y
335 124
336 config ILLEGAL_POINTER_VALUE !! 125 config HAVE_SETUP_PER_CPU_AREA
337 hex !! 126 def_bool y if SPARC64
338 default 0 if 32BIT <<
339 default 0xdead000000000000 if 64BIT <<
340 127
341 config PGTABLE_LEVELS !! 128 config NEED_PER_CPU_EMBED_FIRST_CHUNK
342 int !! 129 def_bool y if SPARC64
343 default 5 if 64BIT <<
344 default 2 <<
345 130
346 config LOCKDEP_SUPPORT !! 131 config NEED_PER_CPU_PAGE_FIRST_CHUNK
347 def_bool y !! 132 def_bool y if SPARC64
348 133
349 config RISCV_DMA_NONCOHERENT !! 134 config MMU
350 bool 135 bool
351 select ARCH_HAS_DMA_PREP_COHERENT !! 136 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 <<
356 137
357 config RISCV_NONSTANDARD_CACHE_OPS !! 138 config HIGHMEM
358 bool 139 bool
359 help !! 140 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 <<
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 <<
370 141
371 source "arch/riscv/Kconfig.socs" !! 142 config ZONE_DMA
372 source "arch/riscv/Kconfig.errata" !! 143 bool
373 !! 144 default y if SPARC32
374 menu "Platform type" <<
375 145
376 config NONPORTABLE !! 146 config GENERIC_ISA_DMA
377 bool "Allow configurations that result !! 147 bool
378 help !! 148 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 <<
384 Selecting N does not guarantee kerne <<
385 systems. Selecting any of the optio <<
386 result in kernel binaries that are u <<
387 systems. <<
388 149
389 If unsure, say N. !! 150 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
>> 151 def_bool y if SPARC64
390 152
391 choice !! 153 config PGTABLE_LEVELS
392 prompt "Base ISA" !! 154 default 4 if 64BIT
393 default ARCH_RV64I !! 155 default 3
394 help <<
395 This selects the base ISA that this <<
396 the target platform. <<
397 156
398 config ARCH_RV32I !! 157 config ARCH_SUPPORTS_UPROBES
399 bool "RV32I" !! 158 def_bool y if SPARC64
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 <<
428 159
429 config MODULE_SECTIONS !! 160 menu "Processor type and features"
430 bool <<
431 select HAVE_MOD_ARCH_SPECIFIC <<
432 161
433 config SMP 162 config SMP
434 bool "Symmetric Multi-Processing" !! 163 bool "Symmetric multi-processing support"
435 help !! 164 ---help---
436 This enables support for systems wit !! 165 This enables support for systems with more than one CPU. If you have
437 you say N here, the kernel will run !! 166 a system with only one CPU, say N. If you have a system with more
438 multiprocessor machines, but will us !! 167 than one CPU, say Y.
439 multiprocessor machine. If you say Y !! 168
440 on many, but not all, single process !! 169 If you say N here, the kernel will run on uni- and multiprocessor
441 processor machine, the kernel will r !! 170 machines, but will use only one CPU of a multiprocessor machine. If
442 here. !! 171 you say Y here, the kernel will run on many, but not all,
>> 172 uniprocessor machines. On a uniprocessor machine, the kernel
>> 173 will run faster if you say N here.
>> 174
>> 175 People using multiprocessor machines who say Y here should also say
>> 176 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 177 Management" code will be disabled if you say Y here.
443 178
444 If you don't know what to do here, s !! 179 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
>> 180 available at <http://www.tldp.org/docs.html#howto>.
445 181
446 config SCHED_MC !! 182 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 <<
453 183
454 config NR_CPUS 184 config NR_CPUS
455 int "Maximum number of CPUs (2-512)" !! 185 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 186 depends on SMP
466 select GENERIC_IRQ_MIGRATION !! 187 range 2 32 if SPARC32
467 help !! 188 range 2 4096 if SPARC64
468 !! 189 default 32 if SPARC32
469 Say Y here to experiment with turnin !! 190 default 4096 if SPARC64
470 can be controlled through /sys/devic <<
471 <<
472 Say N if you want to disable CPU hot <<
473 191
474 choice !! 192 source "kernel/Kconfig.hz"
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 <<
508 193
509 config RISCV_ALTERNATIVE !! 194 config RWSEM_GENERIC_SPINLOCK
510 bool 195 bool
511 depends on !XIP_KERNEL !! 196 default y if SPARC32
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 <<
517 197
518 config RISCV_ALTERNATIVE_EARLY !! 198 config RWSEM_XCHGADD_ALGORITHM
519 bool 199 bool
520 depends on RISCV_ALTERNATIVE !! 200 default y if SPARC64
521 help <<
522 Allows early patching of the kernel <<
523 <<
524 config RISCV_ISA_C <<
525 bool "Emit compressed instructions whe <<
526 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 <<
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 <<
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 <<
551 If you don't know what to do here, s <<
552 <<
553 config RISCV_ISA_SVPBMT <<
554 bool "Svpbmt extension support for sup <<
555 depends on 64BIT && MMU <<
556 depends on RISCV_ALTERNATIVE <<
557 default y <<
558 help <<
559 Adds support to dynamically detect <<
560 ISA-extension (Supervisor-mode: pag <<
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. <<
566 201
567 The Svpbmt extension is only availa !! 202 config GENERIC_HWEIGHT
568 <<
569 If you don't know what to do here, <<
570 <<
571 config TOOLCHAIN_HAS_V <<
572 bool 203 bool
573 default y 204 default y
574 depends on !64BIT || $(cc-option,-mabi <<
575 depends on !32BIT || $(cc-option,-mabi <<
576 depends on LLD_VERSION >= 140000 || LD <<
577 depends on AS_HAS_OPTION_ARCH <<
578 <<
579 config RISCV_ISA_V <<
580 bool "VECTOR extension support" <<
581 depends on TOOLCHAIN_HAS_V <<
582 depends on FPU <<
583 select DYNAMIC_SIGFRAME <<
584 default y <<
585 help <<
586 Say N here if you want to disable al <<
587 in the kernel. <<
588 205
589 If you don't know what to do here, s !! 206 config GENERIC_CALIBRATE_DELAY
590 !! 207 bool
591 config RISCV_ISA_V_DEFAULT_ENABLE <<
592 bool "Enable userspace Vector by defau <<
593 depends on RISCV_ISA_V <<
594 default y 208 default y
595 help <<
596 Say Y here if you want to enable Vec <<
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. <<
609 209
610 config RISCV_ISA_V_PREEMPTIVE !! 210 config ARCH_MAY_HAVE_PC_FDC
611 bool "Run kernel-mode Vector with kern !! 211 bool
612 depends on PREEMPTION <<
613 depends on RISCV_ISA_V <<
614 default y <<
615 help <<
616 Usually, in-kernel SIMD routines are <<
617 Functions which envoke long running <<
618 vector unit to prevent blocking othe <<
619 <<
620 This config allows kernel to run SIM <<
621 preemption. Enabling this config wil <<
622 consumption due to the allocation of <<
623 <<
624 config RISCV_ISA_ZAWRS <<
625 bool "Zawrs extension support for more <<
626 depends on RISCV_ALTERNATIVE <<
627 default y 212 default y
628 help <<
629 The Zawrs extension defines instruct <<
630 which allow a hart to enter a low-po <<
631 hypervisor while waiting on a store <<
632 use of these instructions in the ker <<
633 detected at boot. <<
634 <<
635 If you don't know what to do here, s <<
636 <<
637 config TOOLCHAIN_HAS_ZBB <<
638 bool <<
639 default y <<
640 depends on !64BIT || $(cc-option,-mabi <<
641 depends on !32BIT || $(cc-option,-mabi <<
642 depends on LLD_VERSION >= 150000 || LD <<
643 depends on AS_HAS_OPTION_ARCH <<
644 <<
645 # This symbol indicates that the toolchain sup <<
646 # extensions, including Zvk*, Zvbb, and Zvbc. <<
647 # binutils added all except Zvkb, then added Z <<
648 config TOOLCHAIN_HAS_VECTOR_CRYPTO <<
649 def_bool $(as-instr, .option arch$(com <<
650 depends on AS_HAS_OPTION_ARCH <<
651 213
652 config RISCV_ISA_ZBA !! 214 config EMULATED_CMPXCHG
653 bool "Zba extension support for bit ma !! 215 bool
654 default y !! 216 default y if SPARC32
655 help 217 help
656 Add support for enabling optimisati !! 218 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
657 extension is detected at boot. !! 219 is emulated, and therefore it is not completely atomic.
658 <<
659 The Zba extension provides instruct <<
660 of addresses that index into arrays <<
661 220
662 If you don't know what to do here, !! 221 # Makefile helpers
663 !! 222 config SPARC32_SMP
664 config RISCV_ISA_ZBB !! 223 bool
665 bool "Zbb extension support for bit ma <<
666 depends on TOOLCHAIN_HAS_ZBB <<
667 depends on RISCV_ALTERNATIVE <<
668 default y 224 default y
669 help !! 225 depends on SPARC32 && SMP
670 Adds support to dynamically detect <<
671 extension (basic bit manipulation) <<
672 <<
673 The Zbb extension provides instruct <<
674 of bit-specific operations (count b <<
675 bitrotation, etc). <<
676 226
677 If you don't know what to do here, !! 227 config SPARC64_SMP
678 <<
679 config TOOLCHAIN_HAS_ZBC <<
680 bool 228 bool
681 default y 229 default y
682 depends on !64BIT || $(cc-option,-mabi !! 230 depends on SPARC64 && SMP
683 depends on !32BIT || $(cc-option,-mabi <<
684 depends on LLD_VERSION >= 150000 || LD <<
685 depends on AS_HAS_OPTION_ARCH <<
686 231
687 config RISCV_ISA_ZBC !! 232 config EARLYFB
688 bool "Zbc extension support for carry- !! 233 bool "Support for early boot text console"
689 depends on TOOLCHAIN_HAS_ZBC <<
690 depends on MMU <<
691 depends on RISCV_ALTERNATIVE <<
692 default y 234 default y
>> 235 depends on SPARC64
693 help 236 help
694 Adds support to dynamically detect !! 237 Say Y here to enable a faster early framebuffer boot console.
695 extension (carry-less multiplicatio <<
696 <<
697 The Zbc extension could accelerate <<
698 calculations. <<
699 238
700 If you don't know what to do here, !! 239 config SECCOMP
701 !! 240 bool "Enable seccomp to safely compute untrusted bytecode"
702 config RISCV_ISA_ZICBOM !! 241 depends on SPARC64 && PROC_FS
703 bool "Zicbom extension support for non <<
704 depends on MMU <<
705 depends on RISCV_ALTERNATIVE <<
706 default y <<
707 select RISCV_DMA_NONCOHERENT <<
708 select DMA_DIRECT_REMAP <<
709 help <<
710 Adds support to dynamically detect <<
711 extension (Cache Block Management O <<
712 usage. <<
713 <<
714 The Zicbom extension can be used to <<
715 non-coherent DMA support on devices <<
716 <<
717 If you don't know what to do here, <<
718 <<
719 config RISCV_ISA_ZICBOZ <<
720 bool "Zicboz extension support for fas <<
721 depends on RISCV_ALTERNATIVE <<
722 default y 242 default y
723 help 243 help
724 Enable the use of the Zicboz extens !! 244 This kernel feature is useful for number crunching applications
725 when available. !! 245 that may need to compute untrusted bytecode during their
726 !! 246 execution. By using pipes or other transports made available to
727 The Zicboz extension is used for fa !! 247 the process as file descriptors supporting the read/write
>> 248 syscalls, it's possible to isolate those applications in
>> 249 their own address space using seccomp. Once seccomp is
>> 250 enabled via /proc/<pid>/seccomp, it cannot be disabled
>> 251 and the task is only allowed to execute a few safe syscalls
>> 252 defined by each seccomp mode.
728 253
729 If you don't know what to do here, !! 254 If unsure, say Y. Only embedded should say N here.
730 255
731 config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI !! 256 config HOTPLUG_CPU
732 def_bool y !! 257 bool "Support for hot-pluggable CPUs"
733 # https://sourceware.org/git/?p=binuti !! 258 depends on SPARC64 && SMP
734 # https://gcc.gnu.org/git/?p=gcc.git;a <<
735 depends on AS_IS_GNU && AS_VERSION >= <<
736 help 259 help
737 Binutils-2.38 and GCC-12.1.0 bumped !! 260 Say Y here to experiment with turning CPUs off and on. CPUs
738 20191213 version, which moves some i !! 261 can be controlled through /sys/devices/system/cpu/cpu#.
739 the Zicsr and Zifencei extensions. T !! 262 Say N if you want to disable CPU hotplug.
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 <<
746 263
747 config TOOLCHAIN_NEEDS_OLD_ISA_SPEC !! 264 if SPARC64
748 def_bool y !! 265 source "drivers/cpufreq/Kconfig"
749 depends on TOOLCHAIN_NEEDS_EXPLICIT_ZI !! 266 endif
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 <<
754 Certain versions of clang and GCC do <<
755 -march. This option causes an older <<
756 versions of clang and GCC to be pass <<
757 as passing zicsr and zifencei to -ma <<
758 267
759 config FPU !! 268 config US3_MC
760 bool "FPU support" !! 269 tristate "UltraSPARC-III Memory Controller driver"
>> 270 depends on SPARC64
761 default y 271 default y
762 help 272 help
763 Say N here if you want to disable al !! 273 This adds a driver for the UltraSPARC-III memory controller.
764 in the kernel. !! 274 Loading this driver allows exact mnemonic strings to be
>> 275 printed in the event of a memory error, so that the faulty DIMM
>> 276 on the motherboard can be matched to the error.
765 277
766 If you don't know what to do here, s !! 278 If in doubt, say Y, as this information can be very useful.
767 279
768 config IRQ_STACKS !! 280 # Global things across all Sun machines.
769 bool "Independent irq & softirq stacks !! 281 config GENERIC_LOCKBREAK
>> 282 bool
770 default y 283 default y
771 select HAVE_IRQ_EXIT_ON_IRQ_STACK !! 284 depends on SPARC64 && SMP && PREEMPT
772 select HAVE_SOFTIRQ_ON_OWN_STACK <<
773 help <<
774 Add independent irq & softirq stacks <<
775 overflows. We may save some memory f <<
776 285
777 config THREAD_SIZE_ORDER !! 286 config NUMA
778 int "Kernel stack size (in power-of-tw !! 287 bool "NUMA support"
779 range 0 4 !! 288 depends on SPARC64 && SMP
780 default 1 if 32BIT <<
781 default 2 <<
782 help <<
783 Specify the Pages of thread stack si <<
784 affects irq stack size, which is equ <<
785 289
786 config RISCV_MISALIGNED !! 290 config NODES_SHIFT
787 bool !! 291 int "Maximum NUMA Nodes (as a power of 2)"
788 select SYSCTL_ARCH_UNALIGN_ALLOW !! 292 range 4 5 if SPARC64
>> 293 default "5"
>> 294 depends on NEED_MULTIPLE_NODES
789 help 295 help
790 Embed support for emulating misalign !! 296 Specify the maximum number of NUMA Nodes available on the target
>> 297 system. Increases memory reserved to accommodate various tables.
791 298
792 choice !! 299 # Some NUMA nodes have memory ranges that span
793 prompt "Unaligned Accesses Support" !! 300 # other nodes. Even though a pfn is valid and
794 default RISCV_PROBE_UNALIGNED_ACCESS !! 301 # between a node's start and end pfns, it may not
795 help !! 302 # reside on that node. See memmap_init_zone()
796 This determines the level of support !! 303 # for details.
797 information is used by the kernel to !! 304 config NODES_SPAN_OTHER_NODES
798 exposed to user space via the hwprob !! 305 def_bool y
799 probed at boot by default. !! 306 depends on NEED_MULTIPLE_NODES
800 <<
801 config RISCV_PROBE_UNALIGNED_ACCESS <<
802 bool "Probe for hardware unaligned acc <<
803 select RISCV_MISALIGNED <<
804 help <<
805 During boot, the kernel will run a s <<
806 speed of unaligned accesses. This pr <<
807 the speed of unaligned accesses on t <<
808 memory accesses trap into the kernel <<
809 system, the kernel will emulate the <<
810 UABI. <<
811 <<
812 config RISCV_EMULATED_UNALIGNED_ACCESS <<
813 bool "Emulate unaligned access where s <<
814 select RISCV_MISALIGNED <<
815 help <<
816 If unaligned memory accesses trap in <<
817 supported by the system, the kernel <<
818 accesses to preserve the UABI. When <<
819 unaligned accesses, the unaligned ac <<
820 <<
821 config RISCV_SLOW_UNALIGNED_ACCESS <<
822 bool "Assume the system supports slow <<
823 depends on NONPORTABLE <<
824 help <<
825 Assume that the system supports slow <<
826 kernel and userspace programs may no <<
827 that do not support unaligned memory <<
828 <<
829 config RISCV_EFFICIENT_UNALIGNED_ACCESS <<
830 bool "Assume the system supports fast <<
831 depends on NONPORTABLE <<
832 select DCACHE_WORD_ACCESS if MMU <<
833 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
834 help <<
835 Assume that the system supports fast <<
836 enabled, this option improves the pe <<
837 systems. However, the kernel and use <<
838 slowly, or will not be able to run a <<
839 support efficient unaligned memory a <<
840 307
841 endchoice !! 308 config ARCH_SELECT_MEMORY_MODEL
>> 309 def_bool y if SPARC64
842 310
843 source "arch/riscv/Kconfig.vendor" !! 311 config ARCH_SPARSEMEM_ENABLE
>> 312 def_bool y if SPARC64
>> 313 select SPARSEMEM_VMEMMAP_ENABLE
844 314
845 endmenu # "Platform type" !! 315 config ARCH_SPARSEMEM_DEFAULT
>> 316 def_bool y if SPARC64
846 317
847 menu "Kernel features" !! 318 config FORCE_MAX_ZONEORDER
>> 319 int "Maximum zone order"
>> 320 default "13"
>> 321 help
>> 322 The kernel memory allocator divides physically contiguous memory
>> 323 blocks into "zones", where each zone is a power of two number of
>> 324 pages. This option selects the largest power of two that the kernel
>> 325 keeps in the memory allocator. If you need to allocate very large
>> 326 blocks of physically contiguous memory, then you may need to
>> 327 increase this value.
848 328
849 source "kernel/Kconfig.hz" !! 329 This config option is actually maximum order plus one. For example,
>> 330 a value of 13 means that the largest free memory block is 2^12 pages.
850 331
851 config RISCV_SBI_V01 !! 332 if SPARC64
852 bool "SBI v0.1 support" !! 333 source "kernel/power/Kconfig"
853 depends on RISCV_SBI !! 334 endif
854 help <<
855 This config allows kernel to use SBI <<
856 deprecated in future once legacy M-m <<
857 335
858 config RISCV_BOOT_SPINWAIT !! 336 config SCHED_SMT
859 bool "Spinwait booting method" !! 337 bool "SMT (Hyperthreading) scheduler support"
860 depends on SMP !! 338 depends on SPARC64 && SMP
861 default y if RISCV_SBI_V01 || RISCV_M_ !! 339 default y
862 help 340 help
863 This enables support for booting Lin !! 341 SMT scheduler support improves the CPU scheduler's decision making
864 spinwait method, all cores randomly !! 342 when dealing with SPARC cpus at a cost of slightly increased overhead
865 gets chosen via lottery and all othe !! 343 in some places. If unsure say N here.
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. <<
875 344
876 If unsure what to do here, say N. !! 345 config SCHED_MC
>> 346 bool "Multi-core scheduler support"
>> 347 depends on SPARC64 && SMP
>> 348 default y
>> 349 help
>> 350 Multi-core scheduler support improves the CPU scheduler's decision
>> 351 making when dealing with multi-core CPU chips at a cost of slightly
>> 352 increased overhead in some places. If unsure say N here.
877 353
878 config ARCH_SUPPORTS_KEXEC !! 354 config CMDLINE_BOOL
879 def_bool y !! 355 bool "Default bootloader kernel arguments"
>> 356 depends on SPARC64
880 357
881 config ARCH_SELECTS_KEXEC !! 358 config CMDLINE
882 def_bool y !! 359 string "Initial kernel command string"
883 depends on KEXEC !! 360 depends on CMDLINE_BOOL
884 select HOTPLUG_CPU if SMP !! 361 default "console=ttyS0,9600 root=/dev/sda1"
>> 362 help
>> 363 Say Y here if you want to be able to pass default arguments to
>> 364 the kernel. This will be overridden by the bootloader, if you
>> 365 use one (such as SILO). This is most useful if you want to boot
>> 366 a kernel from TFTP, and want default options to be available
>> 367 with having them passed on the command line.
>> 368
>> 369 NOTE: This option WILL override the PROM bootargs setting!
>> 370
>> 371 config SUN_PM
>> 372 bool
>> 373 default y if SPARC32
>> 374 help
>> 375 Enable power management and CPU standby features on supported
>> 376 SPARC platforms.
>> 377
>> 378 config SPARC_LED
>> 379 tristate "Sun4m LED driver"
>> 380 depends on SPARC32
>> 381 help
>> 382 This driver toggles the front-panel LED on sun4m systems
>> 383 in a user-specifiable manner. Its state can be probed
>> 384 by reading /proc/led and its blinking mode can be changed
>> 385 via writes to /proc/led
>> 386
>> 387 config SERIAL_CONSOLE
>> 388 bool
>> 389 depends on SPARC32
>> 390 default y
>> 391 ---help---
>> 392 If you say Y here, it will be possible to use a serial port as the
>> 393 system console (the system console is the device which receives all
>> 394 kernel messages and warnings and which allows logins in single user
>> 395 mode). This could be useful if some terminal or printer is connected
>> 396 to that serial port.
>> 397
>> 398 Even if you say Y here, the currently visible virtual console
>> 399 (/dev/tty0) will still be used as the system console by default, but
>> 400 you can alter that using a kernel command line option such as
>> 401 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 402 your boot loader (silo) about how to pass options to the kernel at
>> 403 boot time.)
>> 404
>> 405 If you don't have a graphics card installed and you say Y here, the
>> 406 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 407 system console.
885 408
886 config ARCH_SUPPORTS_KEXEC_FILE !! 409 If unsure, say N.
887 def_bool 64BIT <<
888 410
889 config ARCH_SELECTS_KEXEC_FILE !! 411 config SPARC_LEON
890 def_bool y !! 412 bool "Sparc Leon processor family"
891 depends on KEXEC_FILE !! 413 depends on SPARC32
892 select HAVE_IMA_KEXEC if IMA !! 414 select USB_EHCI_BIG_ENDIAN_MMIO
893 select KEXEC_ELF !! 415 select USB_EHCI_BIG_ENDIAN_DESC
>> 416 select USB_UHCI_BIG_ENDIAN_MMIO
>> 417 select USB_UHCI_BIG_ENDIAN_DESC
>> 418 ---help---
>> 419 If you say Y here if you are running on a SPARC-LEON processor.
>> 420 The LEON processor is a synthesizable VHDL model of the
>> 421 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 422 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 423 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 424 toolchain at www.gaisler.com.
894 425
895 config ARCH_SUPPORTS_KEXEC_PURGATORY !! 426 if SPARC_LEON
896 def_bool ARCH_SUPPORTS_KEXEC_FILE !! 427 menu "U-Boot options"
897 428
898 config ARCH_SUPPORTS_CRASH_DUMP !! 429 config UBOOT_LOAD_ADDR
899 def_bool y !! 430 hex "uImage Load Address"
>> 431 default 0x40004000
>> 432 ---help---
>> 433 U-Boot kernel load address, the address in physical address space
>> 434 where u-boot will place the Linux kernel before booting it.
>> 435 This address is normally the base address of main memory + 0x4000.
900 436
901 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 437 config UBOOT_FLASH_ADDR
902 def_bool CRASH_RESERVE !! 438 hex "uImage.o Load Address"
>> 439 default 0x00080000
>> 440 ---help---
>> 441 Optional setting only affecting the uImage.o ELF-image used to
>> 442 download the uImage file to the target using a ELF-loader other than
>> 443 U-Boot. It may for example be used to download an uImage to FLASH with
>> 444 the GRMON utility before even starting u-boot.
903 445
904 config COMPAT !! 446 config UBOOT_ENTRY_ADDR
905 bool "Kernel support for 32-bit U-mode !! 447 hex "uImage Entry Address"
906 default 64BIT !! 448 default 0xf0004000
907 depends on 64BIT && MMU !! 449 ---help---
908 help !! 450 Do not change this unless you know what you're doing. This is
909 This option enables support for a 32 !! 451 hardcoded by the SPARC32 and LEON port.
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 <<
966 452
967 If unsure, say N. !! 453 This is the virtual address u-boot jumps to when booting the Linux
>> 454 Kernel.
968 455
969 endmenu # "Kernel features" !! 456 endmenu
>> 457 endif
970 458
971 menu "Boot options" !! 459 endmenu
972 460
973 config CMDLINE !! 461 menu "Bus options (PCI etc.)"
974 string "Built-in kernel command line" !! 462 config SBUS
975 help !! 463 bool
976 For most platforms, the arguments fo !! 464 default y
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. <<
991 465
992 config CMDLINE_FALLBACK !! 466 config SBUSCHAR
993 bool "Use bootloader kernel arguments !! 467 bool
994 help !! 468 default y
995 Use the built-in command line as fal <<
996 during boot. This is the default beh <<
997 469
998 config CMDLINE_EXTEND !! 470 config SUN_LDOMS
999 bool "Extend bootloader kernel argumen !! 471 bool "Sun Logical Domains support"
>> 472 depends on SPARC64
1000 help 473 help
1001 The command-line arguments provided !! 474 Say Y here is you want to support virtual devices via
1002 appended to the built-in command li !! 475 Logical Domains.
1003 cases where the provided arguments <<
1004 you don't want to or cannot modify <<
1005 476
1006 config CMDLINE_FORCE !! 477 config PCIC_PCI
1007 bool "Always use the default kernel c !! 478 bool
1008 help !! 479 depends on PCI && SPARC32 && !SPARC_LEON
1009 Always use the built-in command lin <<
1010 boot. This is useful in case you ne <<
1011 command line on systems where you d <<
1012 over it. <<
1013 <<
1014 endchoice <<
1015 <<
1016 config EFI_STUB <<
1017 bool <<
1018 <<
1019 config EFI <<
1020 bool "UEFI runtime support" <<
1021 depends on OF && !XIP_KERNEL <<
1022 depends on MMU <<
1023 default y <<
1024 select ARCH_SUPPORTS_ACPI if 64BIT <<
1025 select EFI_GENERIC_STUB <<
1026 select EFI_PARAMS_FROM_FDT <<
1027 select EFI_RUNTIME_WRAPPERS <<
1028 select EFI_STUB <<
1029 select LIBFDT <<
1030 select RISCV_ISA_C <<
1031 select UCS2_STRING <<
1032 help <<
1033 This option provides support for ru <<
1034 by UEFI firmware (such as non-volat <<
1035 clock, and platform reset). A UEFI <<
1036 allow the kernel to be booted as an <<
1037 is only useful on systems that have <<
1038 <<
1039 config DMI <<
1040 bool "Enable support for SMBIOS (DMI) <<
1041 depends on EFI <<
1042 default y 480 default y
1043 help <<
1044 This enables SMBIOS/DMI feature for <<
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 <<
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 481
1099 If unsure, say N. !! 482 config LEON_PCI
>> 483 bool
>> 484 depends on PCI && SPARC_LEON
>> 485 default y
1100 486
1101 config XIP_PHYS_ADDR !! 487 config SPARC_GRPCI1
1102 hex "XIP Kernel Physical Location" !! 488 bool "GRPCI Host Bridge Support"
1103 depends on XIP_KERNEL !! 489 depends on LEON_PCI
1104 default "0x21000000" !! 490 default y
1105 help 491 help
1106 This is the physical address in you !! 492 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
1107 be linked for and stored to. This !! 493 PCI host controller is typically found in GRLIB SPARC32/LEON
1108 own flash usage. !! 494 systems. The driver has one property (all_pci_errors) controlled
>> 495 from the bootloader that makes the GRPCI to generate interrupts
>> 496 on detected PCI Parity and System errors.
1109 497
1110 config RISCV_ISA_FALLBACK !! 498 config SPARC_GRPCI2
1111 bool "Permit falling back to parsing !! 499 bool "GRPCI2 Host Bridge Support"
>> 500 depends on LEON_PCI
1112 default y 501 default y
1113 help 502 help
1114 Parsing the "riscv,isa" devicetree !! 503 Say Y here to include the GRPCI2 Host Bridge Driver.
1115 replaced by a list of explicitly de <<
1116 with existing platforms, the kernel <<
1117 "riscv,isa" property if the replace <<
1118 <<
1119 Selecting N here will result in a k <<
1120 fallback, unless the commandline "r <<
1121 present. <<
1122 <<
1123 Please see the dt-binding, located <<
1124 Documentation/devicetree/bindings/r <<
1125 on the replacement properties, "ris <<
1126 "riscv,isa-extensions". <<
1127 <<
1128 config BUILTIN_DTB <<
1129 bool "Built-in device tree" <<
1130 depends on OF && NONPORTABLE <<
1131 help <<
1132 Build a device tree into the Linux <<
1133 This option should be selected if n <<
1134 If unsure, say N. <<
1135 504
1136 !! 505 config SUN_OPENPROMFS
1137 config BUILTIN_DTB_SOURCE !! 506 tristate "Openprom tree appears in /proc/openprom"
1138 string "Built-in device tree source" <<
1139 depends on BUILTIN_DTB <<
1140 help 507 help
1141 DTS file path (without suffix, rela !! 508 If you say Y, the OpenPROM device tree will be available as a
1142 for the DTS file that will be used !! 509 virtual file system, which you can mount to /proc/openprom by "mount
1143 kernel. !! 510 -t openpromfs none /proc/openprom".
1144 <<
1145 endmenu # "Boot options" <<
1146 <<
1147 config PORTABLE <<
1148 bool <<
1149 default !NONPORTABLE <<
1150 select EFI <<
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 511
1164 config ARCH_HIBERNATION_HEADER !! 512 To compile the /proc/openprom support as a module, choose M here: the
1165 def_bool HIBERNATION !! 513 module will be called openpromfs.
1166 514
1167 config ARCH_SUSPEND_POSSIBLE !! 515 Only choose N if you know in advance that you will not need to modify
1168 def_bool y !! 516 OpenPROM settings on the running system.
1169 <<
1170 endmenu # "Power management options" <<
1171 517
1172 menu "CPU Power Management" !! 518 # Makefile helpers
>> 519 config SPARC64_PCI
>> 520 bool
>> 521 default y
>> 522 depends on SPARC64 && PCI
1173 523
1174 source "drivers/cpuidle/Kconfig" !! 524 config SPARC64_PCI_MSI
>> 525 bool
>> 526 default y
>> 527 depends on SPARC64_PCI && PCI_MSI
1175 528
1176 source "drivers/cpufreq/Kconfig" !! 529 endmenu
1177 530
1178 endmenu # "CPU Power Management" !! 531 config COMPAT
>> 532 bool
>> 533 depends on SPARC64
>> 534 default y
>> 535 select COMPAT_BINFMT_ELF
>> 536 select HAVE_UID16
>> 537 select ARCH_WANT_OLD_COMPAT_IPC
>> 538 select COMPAT_OLD_SIGACTION
1179 539
1180 source "arch/riscv/kvm/Kconfig" !! 540 config SYSVIPC_COMPAT
>> 541 bool
>> 542 depends on COMPAT && SYSVIPC
>> 543 default y
1181 544
1182 source "drivers/acpi/Kconfig" !! 545 source "drivers/sbus/char/Kconfig"
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