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 SYSCTL_EXCEPTION_TRACE
26 select ARCH_HAS_BINFMT_FLAT !! 25 select RTC_CLASS
27 select ARCH_HAS_CURRENT_STACK_POINTER !! 26 select RTC_DRV_M48T59
28 select ARCH_HAS_DEBUG_VIRTUAL if MMU !! 27 select RTC_SYSTOHC
29 select ARCH_HAS_DEBUG_VM_PGTABLE !! 28 select HAVE_DMA_API_DEBUG
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
>> 35 select HAVE_DEBUG_BUGVERBOSE
113 select GENERIC_SMP_IDLE_THREAD 36 select GENERIC_SMP_IDLE_THREAD
114 select GENERIC_TIME_VSYSCALL if MMU && !! 37 select GENERIC_CLOCKEVENTS
115 select GENERIC_VDSO_TIME_NS if HAVE_GE !! 38 select GENERIC_STRNCPY_FROM_USER
116 select HARDIRQS_SW_RESEND !! 39 select GENERIC_STRNLEN_USER
117 select HAS_IOPORT if MMU !! 40 select MODULES_USE_ELF_RELA
118 select HAVE_ARCH_AUDITSYSCALL !! 41 select ODD_RT_SIGACTION
119 select HAVE_ARCH_HUGE_VMALLOC if HAVE_ !! 42 select OLD_SIGSUSPEND
120 select HAVE_ARCH_HUGE_VMAP if MMU && 6 !! 43 select ARCH_HAS_SG_CHAIN
121 select HAVE_ARCH_JUMP_LABEL if !XIP_KE !! 44 select CPU_NO_EFFICIENT_FFS
122 select HAVE_ARCH_JUMP_LABEL_RELATIVE i !! 45 select HAVE_ARCH_HARDENED_USERCOPY
123 select HAVE_ARCH_KASAN if MMU && 64BIT !! 46 select LOCKDEP_SMALL if LOCKDEP
124 select HAVE_ARCH_KASAN_VMALLOC if MMU !! 47 select ARCH_WANT_RELAX_ORDER
125 select HAVE_ARCH_KFENCE if MMU && 64BI !! 48
126 select HAVE_ARCH_KGDB if !XIP_KERNEL !! 49 config SPARC32
127 select HAVE_ARCH_KGDB_QXFER_PKT !! 50 def_bool !64BIT
128 select HAVE_ARCH_MMAP_RND_BITS if MMU !! 51 select GENERIC_ATOMIC64
129 select HAVE_ARCH_MMAP_RND_COMPAT_BITS !! 52 select CLZ_TAB
130 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS !! 53 select HAVE_UID16
131 select HAVE_ARCH_SECCOMP_FILTER !! 54 select OLD_SIGACTION
132 select HAVE_ARCH_STACKLEAK !! 55
133 select HAVE_ARCH_THREAD_STRUCT_WHITELI !! 56 config SPARC64
134 select HAVE_ARCH_TRACEHOOK !! 57 def_bool 64BIT
135 select HAVE_ARCH_TRANSPARENT_HUGEPAGE !! 58 select HAVE_FUNCTION_TRACER
136 select HAVE_ARCH_USERFAULTFD_MINOR if <<
137 select HAVE_ARCH_VMAP_STACK if MMU && <<
138 select HAVE_ASM_MODVERSIONS <<
139 select HAVE_CONTEXT_TRACKING_USER <<
140 select HAVE_DEBUG_KMEMLEAK <<
141 select HAVE_DMA_CONTIGUOUS if MMU <<
142 select HAVE_DYNAMIC_FTRACE if !XIP_KER <<
143 select HAVE_DYNAMIC_FTRACE_WITH_DIRECT <<
144 select HAVE_DYNAMIC_FTRACE_WITH_ARGS i <<
145 select HAVE_FTRACE_MCOUNT_RECORD if !X <<
146 select HAVE_FUNCTION_GRAPH_TRACER 59 select HAVE_FUNCTION_GRAPH_TRACER
147 select HAVE_FUNCTION_GRAPH_RETVAL if H !! 60 select HAVE_KRETPROBES
148 select HAVE_FUNCTION_TRACER if !XIP_KE !! 61 select HAVE_KPROBES
149 select HAVE_EBPF_JIT if MMU !! 62 select HAVE_RCU_TABLE_FREE if SMP
150 select HAVE_GUP_FAST if MMU !! 63 select HAVE_MEMBLOCK
151 select HAVE_FUNCTION_ARG_ACCESS_API !! 64 select HAVE_MEMBLOCK_NODE_MAP
152 select HAVE_FUNCTION_ERROR_INJECTION !! 65 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
153 select HAVE_GCC_PLUGINS !! 66 select HAVE_DYNAMIC_FTRACE
154 select HAVE_GENERIC_VDSO if MMU && 64B !! 67 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 68 select HAVE_SYSCALL_TRACEPOINTS
185 select HOTPLUG_CORE_SYNC_DEAD if HOTPL !! 69 select HAVE_CONTEXT_TRACKING
186 select IRQ_DOMAIN !! 70 select HAVE_DEBUG_KMEMLEAK
187 select IRQ_FORCED_THREADING <<
188 select KASAN_VMALLOC if KASAN <<
189 select LOCK_MM_AND_FIND_VMA <<
190 select MMU_GATHER_RCU_TABLE_FREE if SM <<
191 select MODULES_USE_ELF_RELA if MODULES <<
192 select OF <<
193 select OF_EARLY_FLATTREE <<
194 select OF_IRQ <<
195 select PCI_DOMAINS_GENERIC if PCI <<
196 select PCI_ECAM if (ACPI && PCI) <<
197 select PCI_MSI if PCI <<
198 select RISCV_ALTERNATIVE if !XIP_KERNE <<
199 select RISCV_APLIC <<
200 select RISCV_IMSIC <<
201 select RISCV_INTC <<
202 select RISCV_TIMER if RISCV_SBI <<
203 select SIFIVE_PLIC <<
204 select SPARSE_IRQ 71 select SPARSE_IRQ
205 select SYSCTL_EXCEPTION_TRACE !! 72 select RTC_DRV_CMOS
206 select THREAD_INFO_IN_TASK !! 73 select RTC_DRV_BQ4802
207 select TRACE_IRQFLAGS_SUPPORT !! 74 select RTC_DRV_SUN4V
208 select UACCESS_MEMCPY if !MMU !! 75 select RTC_DRV_STARFIRE
209 select USER_STACKTRACE_SUPPORT !! 76 select HAVE_PERF_EVENTS
210 select ZONE_DMA32 if 64BIT !! 77 select PERF_USE_VMALLOC
211 !! 78 select IRQ_PREFLOW_FASTEOI
212 config RUSTC_SUPPORTS_RISCV !! 79 select ARCH_HAVE_NMI_SAFE_CMPXCHG
213 def_bool y !! 80 select HAVE_C_RECORDMCOUNT
214 depends on 64BIT !! 81 select NO_BOOTMEM
215 # Shadow call stack requires rustc ver !! 82 select HAVE_ARCH_AUDITSYSCALL
216 # -Zsanitizer=shadow-call-stack flag. !! 83 select ARCH_SUPPORTS_ATOMIC_RMW
217 depends on !SHADOW_CALL_STACK || RUSTC !! 84 select HAVE_NMI
218 !! 85 select HAVE_REGS_AND_STACK_ACCESS_API
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 86
233 config RISCV_USE_LINKER_RELAXATION !! 87 config ARCH_DEFCONFIG
234 def_bool y !! 88 string
235 # https://github.com/llvm/llvm-project !! 89 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
236 depends on !LD_IS_LLD || LLD_VERSION > !! 90 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
237 91
238 # https://github.com/llvm/llvm-project/commit/ !! 92 config ARCH_PROC_KCORE_TEXT
239 config ARCH_HAS_BROKEN_DWARF5 <<
240 def_bool y 93 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 94
272 # set if we are running in S-mode and can use !! 95 config ARCH_ATU
273 config RISCV_SBI <<
274 bool 96 bool
275 depends on !RISCV_M_MODE !! 97 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 98
298 config ARCH_FLATMEM_ENABLE !! 99 config ARCH_DMA_ADDR_T_64BIT
299 def_bool !NUMA !! 100 bool
300 !! 101 default y if ARCH_ATU
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 <<
309 102
310 config ARCH_SUPPORTS_UPROBES !! 103 config IOMMU_HELPER
311 def_bool y !! 104 bool
>> 105 default y if SPARC64
312 106
313 config STACKTRACE_SUPPORT 107 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 108 bool
>> 109 default y if SPARC64
323 110
324 config GENERIC_CALIBRATE_DELAY !! 111 config LOCKDEP_SUPPORT
325 def_bool y !! 112 bool
>> 113 default y if SPARC64
326 114
327 config GENERIC_CSUM !! 115 config ARCH_HIBERNATION_POSSIBLE
328 def_bool y !! 116 def_bool y if SPARC64
329 117
330 config GENERIC_HWEIGHT !! 118 config AUDIT_ARCH
331 def_bool y !! 119 bool
>> 120 default y
332 121
333 config FIX_EARLYCON_MEM !! 122 config HAVE_SETUP_PER_CPU_AREA
334 def_bool MMU !! 123 def_bool y if SPARC64
335 124
336 config ILLEGAL_POINTER_VALUE !! 125 config NEED_PER_CPU_EMBED_FIRST_CHUNK
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_PAGE_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 MMU
347 def_bool y !! 132 bool
>> 133 default y
348 134
349 config RISCV_DMA_NONCOHERENT !! 135 config HIGHMEM
350 bool 136 bool
351 select ARCH_HAS_DMA_PREP_COHERENT !! 137 default y if SPARC32
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 <<
356 138
357 config RISCV_NONSTANDARD_CACHE_OPS !! 139 config ZONE_DMA
358 bool 140 bool
359 help !! 141 default y if SPARC32
360 This enables function pointer suppor <<
361 systems to handle cache management. <<
362 142
363 config AS_HAS_INSN !! 143 config NEED_DMA_MAP_STATE
364 def_bool $(as-instr,.insn r 51$(comma) !! 144 def_bool y
365 145
366 config AS_HAS_OPTION_ARCH !! 146 config NEED_SG_DMA_LENGTH
367 # https://github.com/llvm/llvm-project <<
368 def_bool y 147 def_bool y
369 depends on $(as-instr, .option arch$(c <<
370 148
371 source "arch/riscv/Kconfig.socs" !! 149 config GENERIC_ISA_DMA
372 source "arch/riscv/Kconfig.errata" !! 150 bool
>> 151 default y if SPARC32
373 152
374 menu "Platform type" !! 153 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
>> 154 def_bool y if SPARC64
375 155
376 config NONPORTABLE !! 156 config PGTABLE_LEVELS
377 bool "Allow configurations that result !! 157 default 4 if 64BIT
378 help !! 158 default 3
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. <<
388 159
389 If unsure, say N. !! 160 config ARCH_SUPPORTS_UPROBES
>> 161 def_bool y if SPARC64
390 162
391 choice !! 163 source "init/Kconfig"
392 prompt "Base ISA" <<
393 default ARCH_RV64I <<
394 help <<
395 This selects the base ISA that this <<
396 the target platform. <<
397 164
398 config ARCH_RV32I !! 165 source "kernel/Kconfig.freezer"
399 bool "RV32I" <<
400 depends on NONPORTABLE <<
401 select 32BIT <<
402 select GENERIC_LIB_ASHLDI3 <<
403 select GENERIC_LIB_ASHRDI3 <<
404 select GENERIC_LIB_LSHRDI3 <<
405 select GENERIC_LIB_UCMPDI2 <<
406 <<
407 config ARCH_RV64I <<
408 bool "RV64I" <<
409 select 64BIT <<
410 select ARCH_SUPPORTS_INT128 if CC_HAS_ <<
411 select SWIOTLB if MMU <<
412 <<
413 endchoice <<
414 <<
415 # We must be able to map all physical memory i <<
416 # is still a bit more efficient when generatin <<
417 # such that it can only map 2GiB of memory. <<
418 choice <<
419 prompt "Kernel Code Model" <<
420 default CMODEL_MEDLOW if 32BIT <<
421 default CMODEL_MEDANY if 64BIT <<
422 <<
423 config CMODEL_MEDLOW <<
424 bool "medium low code model" <<
425 config CMODEL_MEDANY <<
426 bool "medium any code model" <<
427 endchoice <<
428 166
429 config MODULE_SECTIONS !! 167 menu "Processor type and features"
430 bool <<
431 select HAVE_MOD_ARCH_SPECIFIC <<
432 168
433 config SMP 169 config SMP
434 bool "Symmetric Multi-Processing" !! 170 bool "Symmetric multi-processing support"
435 help !! 171 ---help---
436 This enables support for systems wit !! 172 This enables support for systems with more than one CPU. If you have
437 you say N here, the kernel will run !! 173 a system with only one CPU, say N. If you have a system with more
438 multiprocessor machines, but will us !! 174 than one CPU, say Y.
439 multiprocessor machine. If you say Y !! 175
440 on many, but not all, single process !! 176 If you say N here, the kernel will run on uni- and multiprocessor
441 processor machine, the kernel will r !! 177 machines, but will use only one CPU of a multiprocessor machine. If
442 here. !! 178 you say Y here, the kernel will run on many, but not all,
>> 179 uniprocessor machines. On a uniprocessor machine, the kernel
>> 180 will run faster if you say N here.
>> 181
>> 182 People using multiprocessor machines who say Y here should also say
>> 183 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 184 Management" code will be disabled if you say Y here.
443 185
444 If you don't know what to do here, s !! 186 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
>> 187 available at <http://www.tldp.org/docs.html#howto>.
445 188
446 config SCHED_MC !! 189 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 <<
453 190
454 config NR_CPUS 191 config NR_CPUS
455 int "Maximum number of CPUs (2-512)" !! 192 int "Maximum number of CPUs"
456 depends on SMP 193 depends on SMP
457 range 2 512 if !RISCV_SBI_V01 !! 194 range 2 32 if SPARC32
458 range 2 32 if RISCV_SBI_V01 && 32BIT !! 195 range 2 4096 if SPARC64
459 range 2 64 if RISCV_SBI_V01 && 64BIT !! 196 default 32 if SPARC32
460 default "32" if 32BIT !! 197 default 4096 if SPARC64
461 default "64" if 64BIT <<
462 <<
463 config HOTPLUG_CPU <<
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 <<
482 198
483 # Common NUMA Features !! 199 source kernel/Kconfig.hz
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 <<
496 200
497 The kernel will try to allocate memo !! 201 config RWSEM_GENERIC_SPINLOCK
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 <<
509 config RISCV_ALTERNATIVE <<
510 bool 202 bool
511 depends on !XIP_KERNEL !! 203 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 <<
517 204
518 config RISCV_ALTERNATIVE_EARLY !! 205 config RWSEM_XCHGADD_ALGORITHM
519 bool 206 bool
520 depends on RISCV_ALTERNATIVE !! 207 default y if SPARC64
521 help <<
522 Allows early patching of the kernel <<
523 208
524 config RISCV_ISA_C !! 209 config GENERIC_HWEIGHT
525 bool "Emit compressed instructions whe !! 210 bool
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 211 default y
539 help <<
540 Allow kernel to detect the Svnapot I <<
541 time and enable its usage. <<
542 212
543 The Svnapot extension is used to mar !! 213 config GENERIC_CALIBRATE_DELAY
544 of contiguous virtual-to-physical tr !! 214 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 215 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 <<
568 216
569 If you don't know what to do here, !! 217 config ARCH_MAY_HAVE_PC_FDC
570 <<
571 config TOOLCHAIN_HAS_V <<
572 bool 218 bool
573 default y 219 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 <<
578 220
579 config RISCV_ISA_V !! 221 config EMULATED_CMPXCHG
580 bool "VECTOR extension support" !! 222 bool
581 depends on TOOLCHAIN_HAS_V !! 223 default y if SPARC32
582 depends on FPU <<
583 select DYNAMIC_SIGFRAME <<
584 default y <<
585 help 224 help
586 Say N here if you want to disable al !! 225 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
587 in the kernel. !! 226 is emulated, and therefore it is not completely atomic.
588 227
589 If you don't know what to do here, s !! 228 # Makefile helpers
590 !! 229 config SPARC32_SMP
591 config RISCV_ISA_V_DEFAULT_ENABLE !! 230 bool
592 bool "Enable userspace Vector by defau <<
593 depends on RISCV_ISA_V <<
594 default y 231 default y
595 help !! 232 depends on SPARC32 && SMP
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. <<
609 233
610 config RISCV_ISA_V_PREEMPTIVE !! 234 config SPARC64_SMP
611 bool "Run kernel-mode Vector with kern !! 235 bool
612 depends on PREEMPTION <<
613 depends on RISCV_ISA_V <<
614 default y 236 default y
615 help !! 237 depends on SPARC64 && SMP
616 Usually, in-kernel SIMD routines are !! 238
617 Functions which envoke long running !! 239 config EARLYFB
618 vector unit to prevent blocking othe !! 240 bool "Support for early boot text console"
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 241 default y
>> 242 depends on SPARC64
628 help 243 help
629 The Zawrs extension defines instruct !! 244 Say Y here to enable a faster early framebuffer boot console.
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 <<
651 245
652 config RISCV_ISA_ZBA !! 246 config SECCOMP
653 bool "Zba extension support for bit ma !! 247 bool "Enable seccomp to safely compute untrusted bytecode"
>> 248 depends on SPARC64 && PROC_FS
654 default y 249 default y
655 help 250 help
656 Add support for enabling optimisati !! 251 This kernel feature is useful for number crunching applications
657 extension is detected at boot. !! 252 that may need to compute untrusted bytecode during their
>> 253 execution. By using pipes or other transports made available to
>> 254 the process as file descriptors supporting the read/write
>> 255 syscalls, it's possible to isolate those applications in
>> 256 their own address space using seccomp. Once seccomp is
>> 257 enabled via /proc/<pid>/seccomp, it cannot be disabled
>> 258 and the task is only allowed to execute a few safe syscalls
>> 259 defined by each seccomp mode.
658 260
659 The Zba extension provides instruct !! 261 If unsure, say Y. Only embedded should say N here.
660 of addresses that index into arrays <<
661 262
662 If you don't know what to do here, !! 263 config HOTPLUG_CPU
>> 264 bool "Support for hot-pluggable CPUs"
>> 265 depends on SPARC64 && SMP
>> 266 help
>> 267 Say Y here to experiment with turning CPUs off and on. CPUs
>> 268 can be controlled through /sys/devices/system/cpu/cpu#.
>> 269 Say N if you want to disable CPU hotplug.
>> 270
>> 271 if SPARC64
>> 272 source "drivers/cpufreq/Kconfig"
>> 273 endif
663 274
664 config RISCV_ISA_ZBB !! 275 config US3_MC
665 bool "Zbb extension support for bit ma !! 276 tristate "UltraSPARC-III Memory Controller driver"
666 depends on TOOLCHAIN_HAS_ZBB !! 277 depends on SPARC64
667 depends on RISCV_ALTERNATIVE <<
668 default y 278 default y
669 help 279 help
670 Adds support to dynamically detect !! 280 This adds a driver for the UltraSPARC-III memory controller.
671 extension (basic bit manipulation) !! 281 Loading this driver allows exact mnemonic strings to be
>> 282 printed in the event of a memory error, so that the faulty DIMM
>> 283 on the motherboard can be matched to the error.
672 284
673 The Zbb extension provides instruct !! 285 If in doubt, say Y, as this information can be very useful.
674 of bit-specific operations (count b <<
675 bitrotation, etc). <<
676 286
677 If you don't know what to do here, !! 287 # Global things across all Sun machines.
678 !! 288 config GENERIC_LOCKBREAK
679 config TOOLCHAIN_HAS_ZBC <<
680 bool 289 bool
681 default y 290 default y
682 depends on !64BIT || $(cc-option,-mabi !! 291 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 <<
686 292
687 config RISCV_ISA_ZBC !! 293 config NUMA
688 bool "Zbc extension support for carry- !! 294 bool "NUMA support"
689 depends on TOOLCHAIN_HAS_ZBC !! 295 depends on SPARC64 && SMP
690 depends on MMU <<
691 depends on RISCV_ALTERNATIVE <<
692 default y <<
693 help <<
694 Adds support to dynamically detect <<
695 extension (carry-less multiplicatio <<
696 296
697 The Zbc extension could accelerate !! 297 config NODES_SHIFT
698 calculations. !! 298 int
>> 299 default "4"
>> 300 depends on NEED_MULTIPLE_NODES
699 301
700 If you don't know what to do here, !! 302 # Some NUMA nodes have memory ranges that span
>> 303 # other nodes. Even though a pfn is valid and
>> 304 # between a node's start and end pfns, it may not
>> 305 # reside on that node. See memmap_init_zone()
>> 306 # for details.
>> 307 config NODES_SPAN_OTHER_NODES
>> 308 def_bool y
>> 309 depends on NEED_MULTIPLE_NODES
701 310
702 config RISCV_ISA_ZICBOM !! 311 config ARCH_SELECT_MEMORY_MODEL
703 bool "Zicbom extension support for non !! 312 def_bool y if SPARC64
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 <<
723 help <<
724 Enable the use of the Zicboz extens <<
725 when available. <<
726 313
727 The Zicboz extension is used for fa !! 314 config ARCH_SPARSEMEM_ENABLE
>> 315 def_bool y if SPARC64
>> 316 select SPARSEMEM_VMEMMAP_ENABLE
728 317
729 If you don't know what to do here, !! 318 config ARCH_SPARSEMEM_DEFAULT
>> 319 def_bool y if SPARC64
730 320
731 config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI !! 321 config FORCE_MAX_ZONEORDER
732 def_bool y !! 322 int "Maximum zone order"
733 # https://sourceware.org/git/?p=binuti !! 323 default "13"
734 # https://gcc.gnu.org/git/?p=gcc.git;a <<
735 depends on AS_IS_GNU && AS_VERSION >= <<
736 help 324 help
737 Binutils-2.38 and GCC-12.1.0 bumped !! 325 The kernel memory allocator divides physically contiguous memory
738 20191213 version, which moves some i !! 326 blocks into "zones", where each zone is a power of two number of
739 the Zicsr and Zifencei extensions. T !! 327 pages. This option selects the largest power of two that the kernel
740 Zicsr and Zifencei when binutils >= !! 328 keeps in the memory allocator. If you need to allocate very large
741 and Zifencei are supported in binuti !! 329 blocks of physically contiguous memory, then you may need to
742 To make life easier, and avoid forci !! 330 increase this value.
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 <<
746 331
747 config TOOLCHAIN_NEEDS_OLD_ISA_SPEC !! 332 This config option is actually maximum order plus one. For example,
748 def_bool y !! 333 a value of 13 means that the largest free memory block is 2^12 pages.
749 depends on TOOLCHAIN_NEEDS_EXPLICIT_ZI <<
750 # https://github.com/llvm/llvm-project <<
751 # https://gcc.gnu.org/git/?p=gcc.git;a <<
752 depends on (CC_IS_CLANG && CLANG_VERSI <<
753 help <<
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 <<
758 334
759 config FPU !! 335 source "mm/Kconfig"
760 bool "FPU support" <<
761 default y <<
762 help <<
763 Say N here if you want to disable al <<
764 in the kernel. <<
765 336
766 If you don't know what to do here, s !! 337 if SPARC64
>> 338 source "kernel/power/Kconfig"
>> 339 endif
767 340
768 config IRQ_STACKS !! 341 config SCHED_SMT
769 bool "Independent irq & softirq stacks !! 342 bool "SMT (Hyperthreading) scheduler support"
>> 343 depends on SPARC64 && SMP
770 default y 344 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 345 help
783 Specify the Pages of thread stack si !! 346 SMT scheduler support improves the CPU scheduler's decision making
784 affects irq stack size, which is equ !! 347 when dealing with SPARC cpus at a cost of slightly increased overhead
>> 348 in some places. If unsure say N here.
785 349
786 config RISCV_MISALIGNED !! 350 config SCHED_MC
787 bool !! 351 bool "Multi-core scheduler support"
788 select SYSCTL_ARCH_UNALIGN_ALLOW !! 352 depends on SPARC64 && SMP
789 help !! 353 default y
790 Embed support for emulating misalign <<
791 <<
792 choice <<
793 prompt "Unaligned Accesses Support" <<
794 default RISCV_PROBE_UNALIGNED_ACCESS <<
795 help <<
796 This determines the level of support <<
797 information is used by the kernel to <<
798 exposed to user space via the hwprob <<
799 probed at boot by default. <<
800 <<
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 354 help
835 Assume that the system supports fast !! 355 Multi-core scheduler support improves the CPU scheduler's decision
836 enabled, this option improves the pe !! 356 making when dealing with multi-core CPU chips at a cost of slightly
837 systems. However, the kernel and use !! 357 increased overhead in some places. If unsure say N here.
838 slowly, or will not be able to run a <<
839 support efficient unaligned memory a <<
840 <<
841 endchoice <<
842 358
843 source "arch/riscv/Kconfig.vendor" !! 359 source "kernel/Kconfig.preempt"
844 360
845 endmenu # "Platform type" !! 361 config CMDLINE_BOOL
>> 362 bool "Default bootloader kernel arguments"
>> 363 depends on SPARC64
846 364
847 menu "Kernel features" !! 365 config CMDLINE
>> 366 string "Initial kernel command string"
>> 367 depends on CMDLINE_BOOL
>> 368 default "console=ttyS0,9600 root=/dev/sda1"
>> 369 help
>> 370 Say Y here if you want to be able to pass default arguments to
>> 371 the kernel. This will be overridden by the bootloader, if you
>> 372 use one (such as SILO). This is most useful if you want to boot
>> 373 a kernel from TFTP, and want default options to be available
>> 374 with having them passed on the command line.
>> 375
>> 376 NOTE: This option WILL override the PROM bootargs setting!
>> 377
>> 378 config SUN_PM
>> 379 bool
>> 380 default y if SPARC32
>> 381 help
>> 382 Enable power management and CPU standby features on supported
>> 383 SPARC platforms.
>> 384
>> 385 config SPARC_LED
>> 386 tristate "Sun4m LED driver"
>> 387 depends on SPARC32
>> 388 help
>> 389 This driver toggles the front-panel LED on sun4m systems
>> 390 in a user-specifiable manner. Its state can be probed
>> 391 by reading /proc/led and its blinking mode can be changed
>> 392 via writes to /proc/led
>> 393
>> 394 config SERIAL_CONSOLE
>> 395 bool
>> 396 depends on SPARC32
>> 397 default y
>> 398 ---help---
>> 399 If you say Y here, it will be possible to use a serial port as the
>> 400 system console (the system console is the device which receives all
>> 401 kernel messages and warnings and which allows logins in single user
>> 402 mode). This could be useful if some terminal or printer is connected
>> 403 to that serial port.
>> 404
>> 405 Even if you say Y here, the currently visible virtual console
>> 406 (/dev/tty0) will still be used as the system console by default, but
>> 407 you can alter that using a kernel command line option such as
>> 408 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 409 your boot loader (silo) about how to pass options to the kernel at
>> 410 boot time.)
>> 411
>> 412 If you don't have a graphics card installed and you say Y here, the
>> 413 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 414 system console.
848 415
849 source "kernel/Kconfig.hz" !! 416 If unsure, say N.
850 417
851 config RISCV_SBI_V01 !! 418 config SPARC_LEON
852 bool "SBI v0.1 support" !! 419 bool "Sparc Leon processor family"
853 depends on RISCV_SBI !! 420 depends on SPARC32
854 help !! 421 select USB_EHCI_BIG_ENDIAN_MMIO
855 This config allows kernel to use SBI !! 422 select USB_EHCI_BIG_ENDIAN_DESC
856 deprecated in future once legacy M-m !! 423 ---help---
>> 424 If you say Y here if you are running on a SPARC-LEON processor.
>> 425 The LEON processor is a synthesizable VHDL model of the
>> 426 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 427 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 428 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 429 toolchain at www.gaisler.com.
857 430
858 config RISCV_BOOT_SPINWAIT !! 431 if SPARC_LEON
859 bool "Spinwait booting method" !! 432 menu "U-Boot options"
860 depends on SMP <<
861 default y if RISCV_SBI_V01 || RISCV_M_ <<
862 help <<
863 This enables support for booting Lin <<
864 spinwait method, all cores randomly <<
865 gets chosen via lottery and all othe <<
866 variable. This method cannot support <<
867 scheme. It should be only enabled fo <<
868 on older firmware without SBI HSM ex <<
869 rely on ordered booting via SBI HSM <<
870 dynamically at runtime if the firmwa <<
871 <<
872 Since spinwait is incompatible with <<
873 NR_CPUS be large enough to contain t <<
874 hart to enter Linux. <<
875 433
876 If unsure what to do here, say N. !! 434 config UBOOT_LOAD_ADDR
>> 435 hex "uImage Load Address"
>> 436 default 0x40004000
>> 437 ---help---
>> 438 U-Boot kernel load address, the address in physical address space
>> 439 where u-boot will place the Linux kernel before booting it.
>> 440 This address is normally the base address of main memory + 0x4000.
877 441
878 config ARCH_SUPPORTS_KEXEC !! 442 config UBOOT_FLASH_ADDR
879 def_bool y !! 443 hex "uImage.o Load Address"
>> 444 default 0x00080000
>> 445 ---help---
>> 446 Optional setting only affecting the uImage.o ELF-image used to
>> 447 download the uImage file to the target using a ELF-loader other than
>> 448 U-Boot. It may for example be used to download an uImage to FLASH with
>> 449 the GRMON utility before even starting u-boot.
880 450
881 config ARCH_SELECTS_KEXEC !! 451 config UBOOT_ENTRY_ADDR
882 def_bool y !! 452 hex "uImage Entry Address"
883 depends on KEXEC !! 453 default 0xf0004000
884 select HOTPLUG_CPU if SMP !! 454 ---help---
>> 455 Do not change this unless you know what you're doing. This is
>> 456 hardcoded by the SPARC32 and LEON port.
885 457
886 config ARCH_SUPPORTS_KEXEC_FILE !! 458 This is the virtual address u-boot jumps to when booting the Linux
887 def_bool 64BIT !! 459 Kernel.
888 460
889 config ARCH_SELECTS_KEXEC_FILE !! 461 endmenu
890 def_bool y !! 462 endif
891 depends on KEXEC_FILE <<
892 select HAVE_IMA_KEXEC if IMA <<
893 select KEXEC_ELF <<
894 463
895 config ARCH_SUPPORTS_KEXEC_PURGATORY !! 464 endmenu
896 def_bool ARCH_SUPPORTS_KEXEC_FILE <<
897 465
898 config ARCH_SUPPORTS_CRASH_DUMP !! 466 menu "Bus options (PCI etc.)"
899 def_bool y !! 467 config SBUS
>> 468 bool
>> 469 default y
900 470
901 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 471 config SBUSCHAR
902 def_bool CRASH_RESERVE !! 472 bool
>> 473 default y
903 474
904 config COMPAT !! 475 config SUN_LDOMS
905 bool "Kernel support for 32-bit U-mode !! 476 bool "Sun Logical Domains support"
906 default 64BIT !! 477 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 478 help
920 This changes the kernel so it can mo !! 479 Say Y here is you want to support virtual devices via
921 under a hypervisor, potentially impr !! 480 Logical Domains.
922 over full virtualization. !! 481
923 !! 482 config PCI
924 config PARAVIRT_TIME_ACCOUNTING !! 483 bool "Support for PCI and PS/2 keyboard/mouse"
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 484 help
940 This builds a kernel as a Position I !! 485 Find out whether your system includes a PCI bus. PCI is the name of
941 which retains all relocation metadat !! 486 a bus system, i.e. the way the CPU talks to the other stuff inside
942 kernel binary at runtime to a differ !! 487 your box. If you say Y here, the kernel will include drivers and
943 address it was linked at. !! 488 infrastructure code to support PCI bus devices.
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 <<
966 489
967 If unsure, say N. !! 490 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
>> 491 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
>> 492 All of these platforms are extremely obscure, so say N if unsure.
968 493
969 endmenu # "Kernel features" !! 494 config PCI_DOMAINS
>> 495 def_bool PCI if SPARC64
970 496
971 menu "Boot options" !! 497 config PCI_SYSCALL
>> 498 def_bool PCI
972 499
973 config CMDLINE !! 500 config PCIC_PCI
974 string "Built-in kernel command line" !! 501 bool
975 help !! 502 depends on PCI && SPARC32 && !SPARC_LEON
976 For most platforms, the arguments fo !! 503 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. <<
991 504
992 config CMDLINE_FALLBACK !! 505 config LEON_PCI
993 bool "Use bootloader kernel arguments !! 506 bool
994 help !! 507 depends on PCI && SPARC_LEON
995 Use the built-in command line as fal !! 508 default y
996 during boot. This is the default beh <<
997 509
998 config CMDLINE_EXTEND !! 510 config SPARC_GRPCI1
999 bool "Extend bootloader kernel argumen !! 511 bool "GRPCI Host Bridge Support"
>> 512 depends on LEON_PCI
>> 513 default y
1000 help 514 help
1001 The command-line arguments provided !! 515 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
1002 appended to the built-in command li !! 516 PCI host controller is typically found in GRLIB SPARC32/LEON
1003 cases where the provided arguments !! 517 systems. The driver has one property (all_pci_errors) controlled
1004 you don't want to or cannot modify !! 518 from the bootloader that makes the GRPCI to generate interrupts
>> 519 on detected PCI Parity and System errors.
1005 520
1006 config CMDLINE_FORCE !! 521 config SPARC_GRPCI2
1007 bool "Always use the default kernel c !! 522 bool "GRPCI2 Host Bridge Support"
1008 help !! 523 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 524 default y
1043 help 525 help
1044 This enables SMBIOS/DMI feature for !! 526 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 527
1050 config CC_HAVE_STACKPROTECTOR_TLS !! 528 source "drivers/pci/Kconfig"
1051 def_bool $(cc-option,-mstack-protecto <<
1052 529
1053 config STACKPROTECTOR_PER_TASK !! 530 source "drivers/pcmcia/Kconfig"
1054 def_bool y <<
1055 depends on !RANDSTRUCT <<
1056 depends on STACKPROTECTOR && CC_HAVE_ <<
1057 531
1058 config PHYS_RAM_BASE_FIXED !! 532 config SUN_OPENPROMFS
1059 bool "Explicitly specified physical R !! 533 tristate "Openprom tree appears in /proc/openprom"
1060 depends on NONPORTABLE <<
1061 default n <<
1062 <<
1063 config PHYS_RAM_BASE <<
1064 hex "Platform Physical RAM address" <<
1065 depends on PHYS_RAM_BASE_FIXED <<
1066 default "0x80000000" <<
1067 help <<
1068 This is the physical address of RAM <<
1069 explicitly specified to run early r <<
1070 from flash to RAM. <<
1071 <<
1072 config XIP_KERNEL <<
1073 bool "Kernel Execute-In-Place from RO <<
1074 depends on MMU && SPARSEMEM && NONPOR <<
1075 # This prevents XIP from being enable <<
1076 # fail to build since XIP doesn't sup <<
1077 depends on !COMPILE_TEST <<
1078 select PHYS_RAM_BASE_FIXED <<
1079 help 534 help
1080 Execute-In-Place allows the kernel !! 535 If you say Y, the OpenPROM device tree will be available as a
1081 directly addressable by the CPU, su !! 536 virtual file system, which you can mount to /proc/openprom by "mount
1082 space since the text section of the !! 537 -t openpromfs none /proc/openprom".
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 538
1099 If unsure, say N. !! 539 To compile the /proc/openprom support as a module, choose M here: the
>> 540 module will be called openpromfs.
1100 541
1101 config XIP_PHYS_ADDR !! 542 Only choose N if you know in advance that you will not need to modify
1102 hex "XIP Kernel Physical Location" !! 543 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 544
1110 config RISCV_ISA_FALLBACK !! 545 # Makefile helpers
1111 bool "Permit falling back to parsing !! 546 config SPARC64_PCI
>> 547 bool
1112 default y 548 default y
1113 help !! 549 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 550
1137 config BUILTIN_DTB_SOURCE !! 551 config SPARC64_PCI_MSI
1138 string "Built-in device tree source" !! 552 bool
1139 depends on BUILTIN_DTB !! 553 default y
1140 help !! 554 depends on SPARC64_PCI && PCI_MSI
1141 DTS file path (without suffix, rela <<
1142 for the DTS file that will be used <<
1143 kernel. <<
1144 555
1145 endmenu # "Boot options" !! 556 endmenu
1146 557
1147 config PORTABLE !! 558 menu "Executable file formats"
1148 bool <<
1149 default !NONPORTABLE <<
1150 select EFI <<
1151 select MMU <<
1152 select OF <<
1153 559
1154 config ARCH_PROC_KCORE_TEXT !! 560 source "fs/Kconfig.binfmt"
1155 def_bool y <<
1156 561
1157 menu "Power management options" !! 562 config COMPAT
>> 563 bool
>> 564 depends on SPARC64
>> 565 default y
>> 566 select COMPAT_BINFMT_ELF
>> 567 select HAVE_UID16
>> 568 select ARCH_WANT_OLD_COMPAT_IPC
>> 569 select COMPAT_OLD_SIGACTION
1158 570
1159 source "kernel/power/Kconfig" !! 571 config SYSVIPC_COMPAT
>> 572 bool
>> 573 depends on COMPAT && SYSVIPC
>> 574 default y
1160 575
1161 config ARCH_HIBERNATION_POSSIBLE !! 576 config KEYS_COMPAT
1162 def_bool y !! 577 def_bool y if COMPAT && KEYS
1163 578
1164 config ARCH_HIBERNATION_HEADER !! 579 endmenu
1165 def_bool HIBERNATION <<
1166 580
1167 config ARCH_SUSPEND_POSSIBLE !! 581 source "net/Kconfig"
1168 def_bool y <<
1169 582
1170 endmenu # "Power management options" !! 583 source "drivers/Kconfig"
1171 584
1172 menu "CPU Power Management" !! 585 source "drivers/sbus/char/Kconfig"
1173 586
1174 source "drivers/cpuidle/Kconfig" !! 587 source "fs/Kconfig"
1175 588
1176 source "drivers/cpufreq/Kconfig" !! 589 source "arch/sparc/Kconfig.debug"
1177 590
1178 endmenu # "CPU Power Management" !! 591 source "security/Kconfig"
1179 592
1180 source "arch/riscv/kvm/Kconfig" !! 593 source "crypto/Kconfig"
1181 594
1182 source "drivers/acpi/Kconfig" !! 595 source "lib/Kconfig"
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