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 OF
19 select ACPI_SPCR_TABLE if ACPI !! 19 select OF_PROMTREE
20 select ARCH_DMA_DEFAULT_COHERENT !! 20 select HAVE_IDE
21 select ARCH_ENABLE_HUGEPAGE_MIGRATION !! 21 select HAVE_OPROFILE
22 select ARCH_ENABLE_MEMORY_HOTPLUG if S !! 22 select HAVE_ARCH_KGDB if !SMP || SPARC64
23 select ARCH_ENABLE_MEMORY_HOTREMOVE if !! 23 select HAVE_ARCH_TRACEHOOK
24 select ARCH_ENABLE_SPLIT_PMD_PTLOCK if !! 24 select HAVE_EXIT_THREAD
25 select ARCH_ENABLE_THP_MIGRATION if TR !! 25 select HAVE_PCI
26 select ARCH_HAS_BINFMT_FLAT !! 26 select SYSCTL_EXCEPTION_TRACE
27 select ARCH_HAS_CURRENT_STACK_POINTER !! 27 select RTC_CLASS
28 select ARCH_HAS_DEBUG_VIRTUAL if MMU !! 28 select RTC_DRV_M48T59
29 select ARCH_HAS_DEBUG_VM_PGTABLE !! 29 select RTC_SYSTOHC
30 select ARCH_HAS_DEBUG_WX !! 30 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 31 select GENERIC_IRQ_SHOW
108 select GENERIC_IRQ_SHOW_LEVEL !! 32 select ARCH_WANT_IPC_PARSE_VERSION
109 select GENERIC_LIB_DEVMEM_IS_ALLOWED <<
110 select GENERIC_PCI_IOMAP 33 select GENERIC_PCI_IOMAP
111 select GENERIC_PTDUMP if MMU !! 34 select HAVE_NMI_WATCHDOG if SPARC64
112 select GENERIC_SCHED_CLOCK !! 35 select HAVE_CBPF_JIT if SPARC32
>> 36 select HAVE_EBPF_JIT if SPARC64
>> 37 select HAVE_DEBUG_BUGVERBOSE
113 select GENERIC_SMP_IDLE_THREAD 38 select GENERIC_SMP_IDLE_THREAD
114 select GENERIC_TIME_VSYSCALL if MMU && !! 39 select GENERIC_CLOCKEVENTS
115 select GENERIC_VDSO_TIME_NS if HAVE_GE !! 40 select GENERIC_STRNCPY_FROM_USER
116 select HARDIRQS_SW_RESEND !! 41 select GENERIC_STRNLEN_USER
117 select HAS_IOPORT if MMU !! 42 select MODULES_USE_ELF_RELA
118 select HAVE_ARCH_AUDITSYSCALL !! 43 select PCI_SYSCALL if PCI
119 select HAVE_ARCH_HUGE_VMALLOC if HAVE_ !! 44 select ODD_RT_SIGACTION
120 select HAVE_ARCH_HUGE_VMAP if MMU && 6 !! 45 select OLD_SIGSUSPEND
121 select HAVE_ARCH_JUMP_LABEL if !XIP_KE !! 46 select CPU_NO_EFFICIENT_FFS
122 select HAVE_ARCH_JUMP_LABEL_RELATIVE i !! 47 select LOCKDEP_SMALL if LOCKDEP
123 select HAVE_ARCH_KASAN if MMU && 64BIT !! 48 select NEED_DMA_MAP_STATE
124 select HAVE_ARCH_KASAN_VMALLOC if MMU !! 49 select NEED_SG_DMA_LENGTH
125 select HAVE_ARCH_KFENCE if MMU && 64BI !! 50
126 select HAVE_ARCH_KGDB if !XIP_KERNEL !! 51 config SPARC32
127 select HAVE_ARCH_KGDB_QXFER_PKT !! 52 def_bool !64BIT
128 select HAVE_ARCH_MMAP_RND_BITS if MMU !! 53 select ARCH_32BIT_OFF_T
129 select HAVE_ARCH_MMAP_RND_COMPAT_BITS !! 54 select ARCH_HAS_SYNC_DMA_FOR_CPU
130 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS !! 55 select GENERIC_ATOMIC64
131 select HAVE_ARCH_SECCOMP_FILTER !! 56 select CLZ_TAB
132 select HAVE_ARCH_STACKLEAK !! 57 select HAVE_UID16
133 select HAVE_ARCH_THREAD_STRUCT_WHITELI !! 58 select OLD_SIGACTION
134 select HAVE_ARCH_TRACEHOOK !! 59
135 select HAVE_ARCH_TRANSPARENT_HUGEPAGE !! 60 config SPARC64
136 select HAVE_ARCH_USERFAULTFD_MINOR if !! 61 def_bool 64BIT
137 select HAVE_ARCH_VMAP_STACK if MMU && !! 62 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 63 select HAVE_FUNCTION_GRAPH_TRACER
147 select HAVE_FUNCTION_GRAPH_RETVAL if H !! 64 select HAVE_KRETPROBES
148 select HAVE_FUNCTION_TRACER if !XIP_KE !! 65 select HAVE_KPROBES
149 select HAVE_EBPF_JIT if MMU !! 66 select HAVE_RCU_TABLE_FREE if SMP
150 select HAVE_GUP_FAST if MMU !! 67 select HAVE_RCU_TABLE_NO_INVALIDATE if HAVE_RCU_TABLE_FREE
151 select HAVE_FUNCTION_ARG_ACCESS_API !! 68 select HAVE_MEMBLOCK_NODE_MAP
152 select HAVE_FUNCTION_ERROR_INJECTION !! 69 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
153 select HAVE_GCC_PLUGINS !! 70 select HAVE_DYNAMIC_FTRACE
154 select HAVE_GENERIC_VDSO if MMU && 64B !! 71 select HAVE_FTRACE_MCOUNT_RECORD
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 72 select HAVE_SYSCALL_TRACEPOINTS
185 select HOTPLUG_CORE_SYNC_DEAD if HOTPL !! 73 select HAVE_CONTEXT_TRACKING
186 select IRQ_DOMAIN !! 74 select HAVE_DEBUG_KMEMLEAK
187 select IRQ_FORCED_THREADING !! 75 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 76 select SPARSE_IRQ
205 select SYSCTL_EXCEPTION_TRACE !! 77 select RTC_DRV_CMOS
206 select THREAD_INFO_IN_TASK !! 78 select RTC_DRV_BQ4802
207 select TRACE_IRQFLAGS_SUPPORT !! 79 select RTC_DRV_SUN4V
208 select UACCESS_MEMCPY if !MMU !! 80 select RTC_DRV_STARFIRE
209 select USER_STACKTRACE_SUPPORT !! 81 select HAVE_PERF_EVENTS
210 select ZONE_DMA32 if 64BIT !! 82 select PERF_USE_VMALLOC
>> 83 select IRQ_PREFLOW_FASTEOI
>> 84 select ARCH_HAVE_NMI_SAFE_CMPXCHG
>> 85 select HAVE_C_RECORDMCOUNT
>> 86 select HAVE_ARCH_AUDITSYSCALL
>> 87 select ARCH_SUPPORTS_ATOMIC_RMW
>> 88 select HAVE_NMI
>> 89 select HAVE_REGS_AND_STACK_ACCESS_API
>> 90 select ARCH_USE_QUEUED_RWLOCKS
>> 91 select ARCH_USE_QUEUED_SPINLOCKS
>> 92 select GENERIC_TIME_VSYSCALL
>> 93 select ARCH_CLOCKSOURCE_DATA
>> 94 select ARCH_HAS_PTE_SPECIAL
>> 95 select PCI_DOMAINS if PCI
>> 96 select ARCH_HAS_GIGANTIC_PAGE
211 97
212 config RUSTC_SUPPORTS_RISCV !! 98 config ARCH_DEFCONFIG
213 def_bool y !! 99 string
214 depends on 64BIT !! 100 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
215 # Shadow call stack requires rustc ver !! 101 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) <<
232 102
233 config RISCV_USE_LINKER_RELAXATION !! 103 config ARCH_PROC_KCORE_TEXT
234 def_bool y 104 def_bool y
235 # https://github.com/llvm/llvm-project <<
236 depends on !LD_IS_LLD || LLD_VERSION > <<
237 105
238 # https://github.com/llvm/llvm-project/commit/ !! 106 config CPU_BIG_ENDIAN
239 config ARCH_HAS_BROKEN_DWARF5 <<
240 def_bool y 107 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 <<
271 108
272 # set if we are running in S-mode and can use !! 109 config ARCH_ATU
273 config RISCV_SBI <<
274 bool 110 bool
275 depends on !RISCV_M_MODE !! 111 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 <<
312 112
313 config STACKTRACE_SUPPORT 113 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 114 bool
>> 115 default y if SPARC64
323 116
324 config GENERIC_CALIBRATE_DELAY !! 117 config LOCKDEP_SUPPORT
325 def_bool y !! 118 bool
326 !! 119 default y if SPARC64
327 config GENERIC_CSUM <<
328 def_bool y <<
329 120
330 config GENERIC_HWEIGHT !! 121 config ARCH_HIBERNATION_POSSIBLE
331 def_bool y !! 122 def_bool y if SPARC64
332 123
333 config FIX_EARLYCON_MEM !! 124 config AUDIT_ARCH
334 def_bool MMU !! 125 bool
>> 126 default y
335 127
336 config ILLEGAL_POINTER_VALUE !! 128 config HAVE_SETUP_PER_CPU_AREA
337 hex !! 129 def_bool y if SPARC64
338 default 0 if 32BIT <<
339 default 0xdead000000000000 if 64BIT <<
340 130
341 config PGTABLE_LEVELS !! 131 config NEED_PER_CPU_EMBED_FIRST_CHUNK
342 int !! 132 def_bool y if SPARC64
343 default 5 if 64BIT <<
344 default 2 <<
345 133
346 config LOCKDEP_SUPPORT !! 134 config NEED_PER_CPU_PAGE_FIRST_CHUNK
347 def_bool y !! 135 def_bool y if SPARC64
348 136
349 config RISCV_DMA_NONCOHERENT !! 137 config MMU
350 bool 138 bool
351 select ARCH_HAS_DMA_PREP_COHERENT !! 139 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 <<
356 140
357 config RISCV_NONSTANDARD_CACHE_OPS !! 141 config HIGHMEM
358 bool 142 bool
359 help !! 143 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 <<
371 source "arch/riscv/Kconfig.socs" <<
372 source "arch/riscv/Kconfig.errata" <<
373 144
374 menu "Platform type" !! 145 config ZONE_DMA
>> 146 bool
>> 147 default y if SPARC32
375 148
376 config NONPORTABLE !! 149 config GENERIC_ISA_DMA
377 bool "Allow configurations that result !! 150 bool
378 help !! 151 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. <<
388 152
389 If unsure, say N. !! 153 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
>> 154 def_bool y if SPARC64
390 155
391 choice !! 156 config PGTABLE_LEVELS
392 prompt "Base ISA" !! 157 default 4 if 64BIT
393 default ARCH_RV64I !! 158 default 3
394 help <<
395 This selects the base ISA that this <<
396 the target platform. <<
397 159
398 config ARCH_RV32I !! 160 config ARCH_SUPPORTS_UPROBES
399 bool "RV32I" !! 161 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 <<
428 162
429 config MODULE_SECTIONS !! 163 menu "Processor type and features"
430 bool <<
431 select HAVE_MOD_ARCH_SPECIFIC <<
432 164
433 config SMP 165 config SMP
434 bool "Symmetric Multi-Processing" !! 166 bool "Symmetric multi-processing support"
435 help !! 167 ---help---
436 This enables support for systems wit !! 168 This enables support for systems with more than one CPU. If you have
437 you say N here, the kernel will run !! 169 a system with only one CPU, say N. If you have a system with more
438 multiprocessor machines, but will us !! 170 than one CPU, say Y.
439 multiprocessor machine. If you say Y !! 171
440 on many, but not all, single process !! 172 If you say N here, the kernel will run on uni- and multiprocessor
441 processor machine, the kernel will r !! 173 machines, but will use only one CPU of a multiprocessor machine. If
442 here. !! 174 you say Y here, the kernel will run on many, but not all,
>> 175 uniprocessor machines. On a uniprocessor machine, the kernel
>> 176 will run faster if you say N here.
>> 177
>> 178 People using multiprocessor machines who say Y here should also say
>> 179 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 180 Management" code will be disabled if you say Y here.
443 181
444 If you don't know what to do here, s !! 182 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
>> 183 available at <http://www.tldp.org/docs.html#howto>.
445 184
446 config SCHED_MC !! 185 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 <<
453 186
454 config NR_CPUS 187 config NR_CPUS
455 int "Maximum number of CPUs (2-512)" !! 188 int "Maximum number of CPUs"
456 depends on SMP 189 depends on SMP
457 range 2 512 if !RISCV_SBI_V01 !! 190 range 2 32 if SPARC32
458 range 2 32 if RISCV_SBI_V01 && 32BIT !! 191 range 2 4096 if SPARC64
459 range 2 64 if RISCV_SBI_V01 && 64BIT !! 192 default 32 if SPARC32
460 default "32" if 32BIT !! 193 default 4096 if SPARC64
461 default "64" if 64BIT <<
462 194
463 config HOTPLUG_CPU !! 195 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 <<
508 196
509 config RISCV_ALTERNATIVE !! 197 config GENERIC_HWEIGHT
510 bool 198 bool
511 depends on !XIP_KERNEL !! 199 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 <<
517 200
518 config RISCV_ALTERNATIVE_EARLY !! 201 config GENERIC_CALIBRATE_DELAY
519 bool 202 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 203 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. <<
542 204
543 The Svnapot extension is used to mar !! 205 config ARCH_MAY_HAVE_PC_FDC
544 of contiguous virtual-to-physical tr !! 206 bool
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 207 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 <<
567 The Svpbmt extension is only availa <<
568 208
569 If you don't know what to do here, !! 209 config EMULATED_CMPXCHG
>> 210 bool
>> 211 default y if SPARC32
>> 212 help
>> 213 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
>> 214 is emulated, and therefore it is not completely atomic.
570 215
571 config TOOLCHAIN_HAS_V !! 216 # Makefile helpers
>> 217 config SPARC32_SMP
572 bool 218 bool
573 default y 219 default y
574 depends on !64BIT || $(cc-option,-mabi !! 220 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 <<
578 221
579 config RISCV_ISA_V !! 222 config SPARC64_SMP
580 bool "VECTOR extension support" !! 223 bool
581 depends on TOOLCHAIN_HAS_V <<
582 depends on FPU <<
583 select DYNAMIC_SIGFRAME <<
584 default y 224 default y
585 help !! 225 depends on SPARC64 && SMP
586 Say N here if you want to disable al <<
587 in the kernel. <<
588 226
589 If you don't know what to do here, s !! 227 config EARLYFB
590 !! 228 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 229 default y
>> 230 depends on SPARC64
595 help 231 help
596 Say Y here if you want to enable Vec !! 232 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. <<
609 233
610 config RISCV_ISA_V_PREEMPTIVE !! 234 config SECCOMP
611 bool "Run kernel-mode Vector with kern !! 235 bool "Enable seccomp to safely compute untrusted bytecode"
612 depends on PREEMPTION !! 236 depends on SPARC64 && PROC_FS
613 depends on RISCV_ISA_V <<
614 default y 237 default y
615 help 238 help
616 Usually, in-kernel SIMD routines are !! 239 This kernel feature is useful for number crunching applications
617 Functions which envoke long running !! 240 that may need to compute untrusted bytecode during their
618 vector unit to prevent blocking othe !! 241 execution. By using pipes or other transports made available to
619 !! 242 the process as file descriptors supporting the read/write
620 This config allows kernel to run SIM !! 243 syscalls, it's possible to isolate those applications in
621 preemption. Enabling this config wil !! 244 their own address space using seccomp. Once seccomp is
622 consumption due to the allocation of !! 245 enabled via /proc/<pid>/seccomp, it cannot be disabled
623 !! 246 and the task is only allowed to execute a few safe syscalls
624 config RISCV_ISA_ZAWRS !! 247 defined by each seccomp mode.
625 bool "Zawrs extension support for more <<
626 depends on RISCV_ALTERNATIVE <<
627 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 <<
651 248
652 config RISCV_ISA_ZBA !! 249 If unsure, say Y. Only embedded should say N here.
653 bool "Zba extension support for bit ma <<
654 default y <<
655 help <<
656 Add support for enabling optimisati <<
657 extension is detected at boot. <<
658 250
659 The Zba extension provides instruct !! 251 config HOTPLUG_CPU
660 of addresses that index into arrays !! 252 bool "Support for hot-pluggable CPUs"
>> 253 depends on SPARC64 && SMP
>> 254 help
>> 255 Say Y here to experiment with turning CPUs off and on. CPUs
>> 256 can be controlled through /sys/devices/system/cpu/cpu#.
>> 257 Say N if you want to disable CPU hotplug.
661 258
662 If you don't know what to do here, !! 259 if SPARC64
>> 260 source "drivers/cpufreq/Kconfig"
>> 261 endif
663 262
664 config RISCV_ISA_ZBB !! 263 config US3_MC
665 bool "Zbb extension support for bit ma !! 264 tristate "UltraSPARC-III Memory Controller driver"
666 depends on TOOLCHAIN_HAS_ZBB !! 265 depends on SPARC64
667 depends on RISCV_ALTERNATIVE <<
668 default y 266 default y
669 help 267 help
670 Adds support to dynamically detect !! 268 This adds a driver for the UltraSPARC-III memory controller.
671 extension (basic bit manipulation) !! 269 Loading this driver allows exact mnemonic strings to be
>> 270 printed in the event of a memory error, so that the faulty DIMM
>> 271 on the motherboard can be matched to the error.
672 272
673 The Zbb extension provides instruct !! 273 If in doubt, say Y, as this information can be very useful.
674 of bit-specific operations (count b <<
675 bitrotation, etc). <<
676 274
677 If you don't know what to do here, !! 275 # Global things across all Sun machines.
678 !! 276 config GENERIC_LOCKBREAK
679 config TOOLCHAIN_HAS_ZBC <<
680 bool 277 bool
681 default y 278 default y
682 depends on !64BIT || $(cc-option,-mabi !! 279 depends on SPARC64 && SMP && PREEMPT
683 depends on !32BIT || $(cc-option,-mabi <<
684 depends on LLD_VERSION >= 150000 || LD <<
685 depends on AS_HAS_OPTION_ARCH <<
686 280
687 config RISCV_ISA_ZBC !! 281 config NUMA
688 bool "Zbc extension support for carry- !! 282 bool "NUMA support"
689 depends on TOOLCHAIN_HAS_ZBC !! 283 depends on SPARC64 && SMP
690 depends on MMU !! 284
691 depends on RISCV_ALTERNATIVE !! 285 config NODES_SHIFT
692 default y !! 286 int "Maximum NUMA Nodes (as a power of 2)"
>> 287 range 4 5 if SPARC64
>> 288 default "5"
>> 289 depends on NEED_MULTIPLE_NODES
693 help 290 help
694 Adds support to dynamically detect !! 291 Specify the maximum number of NUMA Nodes available on the target
695 extension (carry-less multiplicatio !! 292 system. Increases memory reserved to accommodate various tables.
696 293
697 The Zbc extension could accelerate !! 294 # Some NUMA nodes have memory ranges that span
698 calculations. !! 295 # other nodes. Even though a pfn is valid and
>> 296 # between a node's start and end pfns, it may not
>> 297 # reside on that node. See memmap_init_zone()
>> 298 # for details.
>> 299 config NODES_SPAN_OTHER_NODES
>> 300 def_bool y
>> 301 depends on NEED_MULTIPLE_NODES
699 302
700 If you don't know what to do here, !! 303 config ARCH_SELECT_MEMORY_MODEL
>> 304 def_bool y if SPARC64
701 305
702 config RISCV_ISA_ZICBOM !! 306 config ARCH_SPARSEMEM_ENABLE
703 bool "Zicbom extension support for non !! 307 def_bool y if SPARC64
704 depends on MMU !! 308 select SPARSEMEM_VMEMMAP_ENABLE
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 <<
723 help <<
724 Enable the use of the Zicboz extens <<
725 when available. <<
726 309
727 The Zicboz extension is used for fa !! 310 config ARCH_SPARSEMEM_DEFAULT
>> 311 def_bool y if SPARC64
728 312
729 If you don't know what to do here, !! 313 config FORCE_MAX_ZONEORDER
>> 314 int "Maximum zone order"
>> 315 default "13"
>> 316 help
>> 317 The kernel memory allocator divides physically contiguous memory
>> 318 blocks into "zones", where each zone is a power of two number of
>> 319 pages. This option selects the largest power of two that the kernel
>> 320 keeps in the memory allocator. If you need to allocate very large
>> 321 blocks of physically contiguous memory, then you may need to
>> 322 increase this value.
730 323
731 config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI !! 324 This config option is actually maximum order plus one. For example,
732 def_bool y !! 325 a value of 13 means that the largest free memory block is 2^12 pages.
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 <<
746 326
747 config TOOLCHAIN_NEEDS_OLD_ISA_SPEC !! 327 if SPARC64
748 def_bool y !! 328 source "kernel/power/Kconfig"
749 depends on TOOLCHAIN_NEEDS_EXPLICIT_ZI !! 329 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 <<
758 330
759 config FPU !! 331 config SCHED_SMT
760 bool "FPU support" !! 332 bool "SMT (Hyperthreading) scheduler support"
>> 333 depends on SPARC64 && SMP
761 default y 334 default y
762 help 335 help
763 Say N here if you want to disable al !! 336 SMT scheduler support improves the CPU scheduler's decision making
764 in the kernel. !! 337 when dealing with SPARC cpus at a cost of slightly increased overhead
>> 338 in some places. If unsure say N here.
765 339
766 If you don't know what to do here, s !! 340 config SCHED_MC
767 !! 341 bool "Multi-core scheduler support"
768 config IRQ_STACKS !! 342 depends on SPARC64 && SMP
769 bool "Independent irq & softirq stacks <<
770 default y 343 default y
771 select HAVE_IRQ_EXIT_ON_IRQ_STACK <<
772 select HAVE_SOFTIRQ_ON_OWN_STACK <<
773 help <<
774 Add independent irq & softirq stacks <<
775 overflows. We may save some memory f <<
776 <<
777 config THREAD_SIZE_ORDER <<
778 int "Kernel stack size (in power-of-tw <<
779 range 0 4 <<
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 <<
786 config RISCV_MISALIGNED <<
787 bool <<
788 select SYSCTL_ARCH_UNALIGN_ALLOW <<
789 help <<
790 Embed support for emulating misalign <<
791 <<
792 choice <<
793 prompt "Unaligned Accesses Support" <<
794 default RISCV_PROBE_UNALIGNED_ACCESS <<
795 help 344 help
796 This determines the level of support !! 345 Multi-core scheduler support improves the CPU scheduler's decision
797 information is used by the kernel to !! 346 making when dealing with multi-core CPU chips at a cost of slightly
798 exposed to user space via the hwprob !! 347 increased overhead in some places. If unsure say N here.
799 probed at boot by default. <<
800 <<
801 config RISCV_PROBE_UNALIGNED_ACCESS <<
802 bool "Probe for hardware unaligned acc <<
803 select RISCV_MISALIGNED <<
804 help <<
805 During boot, the kernel will run a s <<
806 speed of unaligned accesses. This pr <<
807 the speed of unaligned accesses on t <<
808 memory accesses trap into the kernel <<
809 system, the kernel will emulate the <<
810 UABI. <<
811 <<
812 config RISCV_EMULATED_UNALIGNED_ACCESS <<
813 bool "Emulate unaligned access where s <<
814 select RISCV_MISALIGNED <<
815 help <<
816 If unaligned memory accesses trap in <<
817 supported by the system, the kernel <<
818 accesses to preserve the UABI. When <<
819 unaligned accesses, the unaligned ac <<
820 <<
821 config RISCV_SLOW_UNALIGNED_ACCESS <<
822 bool "Assume the system supports slow <<
823 depends on NONPORTABLE <<
824 help <<
825 Assume that the system supports slow <<
826 kernel and userspace programs may no <<
827 that do not support unaligned memory <<
828 <<
829 config RISCV_EFFICIENT_UNALIGNED_ACCESS <<
830 bool "Assume the system supports fast <<
831 depends on NONPORTABLE <<
832 select DCACHE_WORD_ACCESS if MMU <<
833 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
834 help <<
835 Assume that the system supports fast <<
836 enabled, this option improves the pe <<
837 systems. However, the kernel and use <<
838 slowly, or will not be able to run a <<
839 support efficient unaligned memory a <<
840 348
841 endchoice !! 349 config CMDLINE_BOOL
>> 350 bool "Default bootloader kernel arguments"
>> 351 depends on SPARC64
842 352
843 source "arch/riscv/Kconfig.vendor" !! 353 config CMDLINE
>> 354 string "Initial kernel command string"
>> 355 depends on CMDLINE_BOOL
>> 356 default "console=ttyS0,9600 root=/dev/sda1"
>> 357 help
>> 358 Say Y here if you want to be able to pass default arguments to
>> 359 the kernel. This will be overridden by the bootloader, if you
>> 360 use one (such as SILO). This is most useful if you want to boot
>> 361 a kernel from TFTP, and want default options to be available
>> 362 with having them passed on the command line.
>> 363
>> 364 NOTE: This option WILL override the PROM bootargs setting!
>> 365
>> 366 config SUN_PM
>> 367 bool
>> 368 default y if SPARC32
>> 369 help
>> 370 Enable power management and CPU standby features on supported
>> 371 SPARC platforms.
>> 372
>> 373 config SPARC_LED
>> 374 tristate "Sun4m LED driver"
>> 375 depends on SPARC32
>> 376 help
>> 377 This driver toggles the front-panel LED on sun4m systems
>> 378 in a user-specifiable manner. Its state can be probed
>> 379 by reading /proc/led and its blinking mode can be changed
>> 380 via writes to /proc/led
>> 381
>> 382 config SERIAL_CONSOLE
>> 383 bool
>> 384 depends on SPARC32
>> 385 default y
>> 386 ---help---
>> 387 If you say Y here, it will be possible to use a serial port as the
>> 388 system console (the system console is the device which receives all
>> 389 kernel messages and warnings and which allows logins in single user
>> 390 mode). This could be useful if some terminal or printer is connected
>> 391 to that serial port.
>> 392
>> 393 Even if you say Y here, the currently visible virtual console
>> 394 (/dev/tty0) will still be used as the system console by default, but
>> 395 you can alter that using a kernel command line option such as
>> 396 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 397 your boot loader (silo) about how to pass options to the kernel at
>> 398 boot time.)
>> 399
>> 400 If you don't have a graphics card installed and you say Y here, the
>> 401 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 402 system console.
844 403
845 endmenu # "Platform type" !! 404 If unsure, say N.
846 405
847 menu "Kernel features" !! 406 config SPARC_LEON
>> 407 bool "Sparc Leon processor family"
>> 408 depends on SPARC32
>> 409 select USB_EHCI_BIG_ENDIAN_MMIO
>> 410 select USB_EHCI_BIG_ENDIAN_DESC
>> 411 select USB_UHCI_BIG_ENDIAN_MMIO
>> 412 select USB_UHCI_BIG_ENDIAN_DESC
>> 413 ---help---
>> 414 If you say Y here if you are running on a SPARC-LEON processor.
>> 415 The LEON processor is a synthesizable VHDL model of the
>> 416 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 417 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 418 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 419 toolchain at www.gaisler.com.
848 420
849 source "kernel/Kconfig.hz" !! 421 if SPARC_LEON
>> 422 menu "U-Boot options"
850 423
851 config RISCV_SBI_V01 !! 424 config UBOOT_LOAD_ADDR
852 bool "SBI v0.1 support" !! 425 hex "uImage Load Address"
853 depends on RISCV_SBI !! 426 default 0x40004000
854 help !! 427 ---help---
855 This config allows kernel to use SBI !! 428 U-Boot kernel load address, the address in physical address space
856 deprecated in future once legacy M-m !! 429 where u-boot will place the Linux kernel before booting it.
>> 430 This address is normally the base address of main memory + 0x4000.
857 431
858 config RISCV_BOOT_SPINWAIT !! 432 config UBOOT_FLASH_ADDR
859 bool "Spinwait booting method" !! 433 hex "uImage.o Load Address"
860 depends on SMP !! 434 default 0x00080000
861 default y if RISCV_SBI_V01 || RISCV_M_ !! 435 ---help---
862 help !! 436 Optional setting only affecting the uImage.o ELF-image used to
863 This enables support for booting Lin !! 437 download the uImage file to the target using a ELF-loader other than
864 spinwait method, all cores randomly !! 438 U-Boot. It may for example be used to download an uImage to FLASH with
865 gets chosen via lottery and all othe !! 439 the GRMON utility before even starting u-boot.
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. <<
875 440
876 If unsure what to do here, say N. !! 441 config UBOOT_ENTRY_ADDR
>> 442 hex "uImage Entry Address"
>> 443 default 0xf0004000
>> 444 ---help---
>> 445 Do not change this unless you know what you're doing. This is
>> 446 hardcoded by the SPARC32 and LEON port.
877 447
878 config ARCH_SUPPORTS_KEXEC !! 448 This is the virtual address u-boot jumps to when booting the Linux
879 def_bool y !! 449 Kernel.
880 450
881 config ARCH_SELECTS_KEXEC !! 451 endmenu
882 def_bool y !! 452 endif
883 depends on KEXEC <<
884 select HOTPLUG_CPU if SMP <<
885 453
886 config ARCH_SUPPORTS_KEXEC_FILE !! 454 endmenu
887 def_bool 64BIT <<
888 455
889 config ARCH_SELECTS_KEXEC_FILE !! 456 menu "Bus options (PCI etc.)"
890 def_bool y !! 457 config SBUS
891 depends on KEXEC_FILE !! 458 bool
892 select HAVE_IMA_KEXEC if IMA !! 459 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 <<
900 460
901 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 461 config SBUSCHAR
902 def_bool CRASH_RESERVE !! 462 bool
>> 463 default y
903 464
904 config COMPAT !! 465 config SUN_LDOMS
905 bool "Kernel support for 32-bit U-mode !! 466 bool "Sun Logical Domains support"
906 default 64BIT !! 467 depends on SPARC64
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 468 help
940 This builds a kernel as a Position I !! 469 Say Y here is you want to support virtual devices via
941 which retains all relocation metadat !! 470 Logical Domains.
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 <<
966 471
967 If unsure, say N. !! 472 config PCIC_PCI
968 !! 473 bool
969 endmenu # "Kernel features" !! 474 depends on PCI && SPARC32 && !SPARC_LEON
970 !! 475 default y
971 menu "Boot options" <<
972 <<
973 config CMDLINE <<
974 string "Built-in kernel command line" <<
975 help <<
976 For most platforms, the arguments fo <<
977 are provided at run-time, during boo <<
978 where either no arguments are being <<
979 arguments are insufficient or even i <<
980 <<
981 When that occurs, it is possible to <<
982 line here and choose how the kernel <<
983 <<
984 choice <<
985 prompt "Built-in command line usage" <<
986 depends on CMDLINE != "" <<
987 default CMDLINE_FALLBACK <<
988 help <<
989 Choose how the kernel will handle th <<
990 line. <<
991 476
992 config CMDLINE_FALLBACK !! 477 config LEON_PCI
993 bool "Use bootloader kernel arguments !! 478 bool
994 help !! 479 depends on PCI && SPARC_LEON
995 Use the built-in command line as fal !! 480 default y
996 during boot. This is the default beh <<
997 481
998 config CMDLINE_EXTEND !! 482 config SPARC_GRPCI1
999 bool "Extend bootloader kernel argumen !! 483 bool "GRPCI Host Bridge Support"
>> 484 depends on LEON_PCI
>> 485 default y
1000 help 486 help
1001 The command-line arguments provided !! 487 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
1002 appended to the built-in command li !! 488 PCI host controller is typically found in GRLIB SPARC32/LEON
1003 cases where the provided arguments !! 489 systems. The driver has one property (all_pci_errors) controlled
1004 you don't want to or cannot modify !! 490 from the bootloader that makes the GRPCI to generate interrupts
>> 491 on detected PCI Parity and System errors.
1005 492
1006 config CMDLINE_FORCE !! 493 config SPARC_GRPCI2
1007 bool "Always use the default kernel c !! 494 bool "GRPCI2 Host Bridge Support"
1008 help !! 495 depends on LEON_PCI
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 496 default y
1043 help 497 help
1044 This enables SMBIOS/DMI feature for !! 498 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 499
1053 config STACKPROTECTOR_PER_TASK !! 500 config SUN_OPENPROMFS
1054 def_bool y !! 501 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 502 help
1068 This is the physical address of RAM !! 503 If you say Y, the OpenPROM device tree will be available as a
1069 explicitly specified to run early r !! 504 virtual file system, which you can mount to /proc/openprom by "mount
1070 from flash to RAM. !! 505 -t openpromfs none /proc/openprom".
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 506
1099 If unsure, say N. !! 507 To compile the /proc/openprom support as a module, choose M here: the
>> 508 module will be called openpromfs.
1100 509
1101 config XIP_PHYS_ADDR !! 510 Only choose N if you know in advance that you will not need to modify
1102 hex "XIP Kernel Physical Location" !! 511 OpenPROM settings on the running system.
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 512
1110 config RISCV_ISA_FALLBACK !! 513 # Makefile helpers
1111 bool "Permit falling back to parsing !! 514 config SPARC64_PCI
>> 515 bool
1112 default y 516 default y
1113 help !! 517 depends on SPARC64 && PCI
1114 Parsing the "riscv,isa" devicetree <<
1115 replaced by a list of explicitly de <<
1116 with existing platforms, the kernel <<
1117 "riscv,isa" property if the replace <<
1118 <<
1119 Selecting N here will result in a k <<
1120 fallback, unless the commandline "r <<
1121 present. <<
1122 <<
1123 Please see the dt-binding, located <<
1124 Documentation/devicetree/bindings/r <<
1125 on the replacement properties, "ris <<
1126 "riscv,isa-extensions". <<
1127 <<
1128 config BUILTIN_DTB <<
1129 bool "Built-in device tree" <<
1130 depends on OF && NONPORTABLE <<
1131 help <<
1132 Build a device tree into the Linux <<
1133 This option should be selected if n <<
1134 If unsure, say N. <<
1135 <<
1136 <<
1137 config BUILTIN_DTB_SOURCE <<
1138 string "Built-in device tree source" <<
1139 depends on BUILTIN_DTB <<
1140 help <<
1141 DTS file path (without suffix, rela <<
1142 for the DTS file that will be used <<
1143 kernel. <<
1144 518
1145 endmenu # "Boot options" !! 519 config SPARC64_PCI_MSI
1146 <<
1147 config PORTABLE <<
1148 bool 520 bool
1149 default !NONPORTABLE !! 521 default y
1150 select EFI !! 522 depends on SPARC64_PCI && PCI_MSI
1151 select MMU <<
1152 select OF <<
1153 <<
1154 config ARCH_PROC_KCORE_TEXT <<
1155 def_bool y <<
1156 <<
1157 menu "Power management options" <<
1158 <<
1159 source "kernel/power/Kconfig" <<
1160 <<
1161 config ARCH_HIBERNATION_POSSIBLE <<
1162 def_bool y <<
1163 <<
1164 config ARCH_HIBERNATION_HEADER <<
1165 def_bool HIBERNATION <<
1166 <<
1167 config ARCH_SUSPEND_POSSIBLE <<
1168 def_bool y <<
1169 <<
1170 endmenu # "Power management options" <<
1171 <<
1172 menu "CPU Power Management" <<
1173 <<
1174 source "drivers/cpuidle/Kconfig" <<
1175 523
1176 source "drivers/cpufreq/Kconfig" !! 524 endmenu
1177 525
1178 endmenu # "CPU Power Management" !! 526 config COMPAT
>> 527 bool
>> 528 depends on SPARC64
>> 529 default y
>> 530 select COMPAT_BINFMT_ELF
>> 531 select HAVE_UID16
>> 532 select ARCH_WANT_OLD_COMPAT_IPC
>> 533 select COMPAT_OLD_SIGACTION
1179 534
1180 source "arch/riscv/kvm/Kconfig" !! 535 config SYSVIPC_COMPAT
>> 536 bool
>> 537 depends on COMPAT && SYSVIPC
>> 538 default y
1181 539
1182 source "drivers/acpi/Kconfig" !! 540 source "drivers/sbus/char/Kconfig"
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