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_ARCH_JUMP_LABEL if SPARC64
30 select ARCH_HAS_DEBUG_WX <<
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 29 select GENERIC_IRQ_SHOW
108 select GENERIC_IRQ_SHOW_LEVEL !! 30 select ARCH_WANT_IPC_PARSE_VERSION
109 select GENERIC_LIB_DEVMEM_IS_ALLOWED <<
110 select GENERIC_PCI_IOMAP 31 select GENERIC_PCI_IOMAP
111 select GENERIC_PTDUMP if MMU !! 32 select HAVE_NMI_WATCHDOG if SPARC64
112 select GENERIC_SCHED_CLOCK !! 33 select HAVE_CBPF_JIT if SPARC32
>> 34 select HAVE_EBPF_JIT if SPARC64
>> 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 LOCKDEP_SMALL if LOCKDEP
123 select HAVE_ARCH_KASAN if MMU && 64BIT !! 46 select NEED_DMA_MAP_STATE
124 select HAVE_ARCH_KASAN_VMALLOC if MMU !! 47 select NEED_SG_DMA_LENGTH
125 select HAVE_ARCH_KFENCE if MMU && 64BI !! 48 select HAVE_MEMBLOCK
126 select HAVE_ARCH_KGDB if !XIP_KERNEL !! 49 select NO_BOOTMEM
127 select HAVE_ARCH_KGDB_QXFER_PKT !! 50
128 select HAVE_ARCH_MMAP_RND_BITS if MMU !! 51 config SPARC32
129 select HAVE_ARCH_MMAP_RND_COMPAT_BITS !! 52 def_bool !64BIT
130 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS !! 53 select ARCH_HAS_CPU_FINALIZE_INIT if !SMP
131 select HAVE_ARCH_SECCOMP_FILTER !! 54 select ARCH_HAS_SYNC_DMA_FOR_CPU
132 select HAVE_ARCH_STACKLEAK !! 55 select DMA_NONCOHERENT_OPS
133 select HAVE_ARCH_THREAD_STRUCT_WHITELI !! 56 select GENERIC_ATOMIC64
134 select HAVE_ARCH_TRACEHOOK !! 57 select CLZ_TAB
135 select HAVE_ARCH_TRANSPARENT_HUGEPAGE !! 58 select HAVE_UID16
136 select HAVE_ARCH_USERFAULTFD_MINOR if !! 59 select OLD_SIGACTION
137 select HAVE_ARCH_VMAP_STACK if MMU && !! 60
138 select HAVE_ASM_MODVERSIONS !! 61 config SPARC64
139 select HAVE_CONTEXT_TRACKING_USER !! 62 def_bool 64BIT
140 select HAVE_DEBUG_KMEMLEAK !! 63 select HAVE_FUNCTION_TRACER
141 select HAVE_DMA_CONTIGUOUS if MMU <<
142 select HAVE_DYNAMIC_FTRACE if !XIP_KER <<
143 select HAVE_DYNAMIC_FTRACE_WITH_DIRECT <<
144 select HAVE_DYNAMIC_FTRACE_WITH_ARGS i <<
145 select HAVE_FTRACE_MCOUNT_RECORD if !X <<
146 select HAVE_FUNCTION_GRAPH_TRACER 64 select HAVE_FUNCTION_GRAPH_TRACER
147 select HAVE_FUNCTION_GRAPH_RETVAL if H !! 65 select HAVE_KRETPROBES
148 select HAVE_FUNCTION_TRACER if !XIP_KE !! 66 select HAVE_KPROBES
149 select HAVE_EBPF_JIT if MMU !! 67 select HAVE_RCU_TABLE_FREE if SMP
150 select HAVE_GUP_FAST if MMU !! 68 select HAVE_MEMBLOCK_NODE_MAP
151 select HAVE_FUNCTION_ARG_ACCESS_API !! 69 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
152 select HAVE_FUNCTION_ERROR_INJECTION !! 70 select HAVE_DYNAMIC_FTRACE
153 select HAVE_GCC_PLUGINS !! 71 select HAVE_FTRACE_MCOUNT_RECORD
154 select HAVE_GENERIC_VDSO if MMU && 64B <<
155 select HAVE_IRQ_TIME_ACCOUNTING <<
156 select HAVE_KERNEL_BZIP2 if !XIP_KERNE <<
157 select HAVE_KERNEL_GZIP if !XIP_KERNEL <<
158 select HAVE_KERNEL_LZ4 if !XIP_KERNEL <<
159 select HAVE_KERNEL_LZMA if !XIP_KERNEL <<
160 select HAVE_KERNEL_LZO if !XIP_KERNEL <<
161 select HAVE_KERNEL_UNCOMPRESSED if !XI <<
162 select HAVE_KERNEL_ZSTD if !XIP_KERNEL <<
163 select HAVE_KERNEL_XZ if !XIP_KERNEL & <<
164 select HAVE_KPROBES if !XIP_KERNEL <<
165 select HAVE_KRETPROBES if !XIP_KERNEL <<
166 # https://github.com/ClangBuiltLinux/l <<
167 select HAVE_LD_DEAD_CODE_DATA_ELIMINAT <<
168 select HAVE_MOVE_PMD <<
169 select HAVE_MOVE_PUD <<
170 select HAVE_PAGE_SIZE_4KB <<
171 select HAVE_PCI <<
172 select HAVE_PERF_EVENTS <<
173 select HAVE_PERF_REGS <<
174 select HAVE_PERF_USER_STACK_DUMP <<
175 select HAVE_POSIX_CPU_TIMERS_TASK_WORK <<
176 select HAVE_PREEMPT_DYNAMIC_KEY if !XI <<
177 select HAVE_REGS_AND_STACK_ACCESS_API <<
178 select HAVE_RETHOOK if !XIP_KERNEL <<
179 select HAVE_RSEQ <<
180 select HAVE_RUST if RUSTC_SUPPORTS_RIS <<
181 select HAVE_SAMPLE_FTRACE_DIRECT <<
182 select HAVE_SAMPLE_FTRACE_DIRECT_MULTI <<
183 select HAVE_STACKPROTECTOR <<
184 select HAVE_SYSCALL_TRACEPOINTS 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
211 95
212 config RUSTC_SUPPORTS_RISCV !! 96 config ARCH_DEFCONFIG
213 def_bool y !! 97 string
214 depends on 64BIT !! 98 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
215 # Shadow call stack requires rustc ver !! 99 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) <<
232 100
233 config RISCV_USE_LINKER_RELAXATION !! 101 config ARCH_PROC_KCORE_TEXT
234 def_bool y 102 def_bool y
235 # https://github.com/llvm/llvm-project <<
236 depends on !LD_IS_LLD || LLD_VERSION > <<
237 103
238 # https://github.com/llvm/llvm-project/commit/ !! 104 config CPU_BIG_ENDIAN
239 config ARCH_HAS_BROKEN_DWARF5 <<
240 def_bool y 105 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 <<
271 106
272 # set if we are running in S-mode and can use !! 107 config ARCH_ATU
273 config RISCV_SBI <<
274 bool 108 bool
275 depends on !RISCV_M_MODE !! 109 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 <<
312 110
313 config STACKTRACE_SUPPORT 111 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 112 bool
>> 113 default y if SPARC64
323 114
324 config GENERIC_CALIBRATE_DELAY !! 115 config LOCKDEP_SUPPORT
325 def_bool y !! 116 bool
326 !! 117 default y if SPARC64
327 config GENERIC_CSUM <<
328 def_bool y <<
329 118
330 config GENERIC_HWEIGHT !! 119 config ARCH_HIBERNATION_POSSIBLE
331 def_bool y !! 120 def_bool y if SPARC64
332 121
333 config FIX_EARLYCON_MEM !! 122 config AUDIT_ARCH
334 def_bool MMU !! 123 bool
>> 124 default y
335 125
336 config ILLEGAL_POINTER_VALUE !! 126 config HAVE_SETUP_PER_CPU_AREA
337 hex !! 127 def_bool y if SPARC64
338 default 0 if 32BIT <<
339 default 0xdead000000000000 if 64BIT <<
340 128
341 config PGTABLE_LEVELS !! 129 config NEED_PER_CPU_EMBED_FIRST_CHUNK
342 int !! 130 def_bool y if SPARC64
343 default 5 if 64BIT <<
344 default 2 <<
345 131
346 config LOCKDEP_SUPPORT !! 132 config NEED_PER_CPU_PAGE_FIRST_CHUNK
347 def_bool y !! 133 def_bool y if SPARC64
348 134
349 config RISCV_DMA_NONCOHERENT !! 135 config MMU
350 bool 136 bool
351 select ARCH_HAS_DMA_PREP_COHERENT !! 137 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 <<
356 138
357 config RISCV_NONSTANDARD_CACHE_OPS !! 139 config HIGHMEM
358 bool 140 bool
359 help !! 141 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 <<
370 142
371 source "arch/riscv/Kconfig.socs" !! 143 config ZONE_DMA
372 source "arch/riscv/Kconfig.errata" !! 144 bool
>> 145 default y if SPARC32
373 146
374 menu "Platform type" !! 147 config GENERIC_ISA_DMA
>> 148 bool
>> 149 default y if SPARC32
375 150
376 config NONPORTABLE !! 151 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
377 bool "Allow configurations that result !! 152 def_bool y if SPARC64
378 help <<
379 RISC-V kernel binaries are compatibl <<
380 whenever possible, but there are som <<
381 satisfied by configurations that res <<
382 not portable between systems. <<
383 <<
384 Selecting N does not guarantee kerne <<
385 systems. Selecting any of the optio <<
386 result in kernel binaries that are u <<
387 systems. <<
388 153
389 If unsure, say N. !! 154 config PGTABLE_LEVELS
390 !! 155 default 4 if 64BIT
391 choice !! 156 default 3
392 prompt "Base ISA" <<
393 default ARCH_RV64I <<
394 help <<
395 This selects the base ISA that this <<
396 the target platform. <<
397 157
398 config ARCH_RV32I !! 158 config ARCH_SUPPORTS_UPROBES
399 bool "RV32I" !! 159 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 <<
428 160
429 config MODULE_SECTIONS !! 161 menu "Processor type and features"
430 bool <<
431 select HAVE_MOD_ARCH_SPECIFIC <<
432 162
433 config SMP 163 config SMP
434 bool "Symmetric Multi-Processing" !! 164 bool "Symmetric multi-processing support"
435 help !! 165 ---help---
436 This enables support for systems wit !! 166 This enables support for systems with more than one CPU. If you have
437 you say N here, the kernel will run !! 167 a system with only one CPU, say N. If you have a system with more
438 multiprocessor machines, but will us !! 168 than one CPU, say Y.
439 multiprocessor machine. If you say Y !! 169
440 on many, but not all, single process !! 170 If you say N here, the kernel will run on uni- and multiprocessor
441 processor machine, the kernel will r !! 171 machines, but will use only one CPU of a multiprocessor machine. If
442 here. !! 172 you say Y here, the kernel will run on many, but not all,
>> 173 uniprocessor machines. On a uniprocessor machine, the kernel
>> 174 will run faster if you say N here.
>> 175
>> 176 People using multiprocessor machines who say Y here should also say
>> 177 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 178 Management" code will be disabled if you say Y here.
443 179
444 If you don't know what to do here, s !! 180 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
>> 181 available at <http://www.tldp.org/docs.html#howto>.
445 182
446 config SCHED_MC !! 183 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 <<
453 184
454 config NR_CPUS 185 config NR_CPUS
455 int "Maximum number of CPUs (2-512)" !! 186 int "Maximum number of CPUs"
456 depends on SMP 187 depends on SMP
457 range 2 512 if !RISCV_SBI_V01 !! 188 range 2 32 if SPARC32
458 range 2 32 if RISCV_SBI_V01 && 32BIT !! 189 range 2 4096 if SPARC64
459 range 2 64 if RISCV_SBI_V01 && 64BIT !! 190 default 32 if SPARC32
460 default "32" if 32BIT !! 191 default 4096 if SPARC64
461 default "64" if 64BIT <<
462 192
463 config HOTPLUG_CPU !! 193 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 <<
473 194
474 choice !! 195 config RWSEM_GENERIC_SPINLOCK
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 <<
509 config RISCV_ALTERNATIVE <<
510 bool 196 bool
511 depends on !XIP_KERNEL !! 197 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 <<
517 198
518 config RISCV_ALTERNATIVE_EARLY !! 199 config RWSEM_XCHGADD_ALGORITHM
519 bool 200 bool
520 depends on RISCV_ALTERNATIVE !! 201 default y if SPARC64
521 help <<
522 Allows early patching of the kernel <<
523 202
524 config RISCV_ISA_C !! 203 config GENERIC_HWEIGHT
525 bool "Emit compressed instructions whe !! 204 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 205 default y
539 help <<
540 Allow kernel to detect the Svnapot I <<
541 time and enable its usage. <<
542 206
543 The Svnapot extension is used to mar !! 207 config GENERIC_CALIBRATE_DELAY
544 of contiguous virtual-to-physical tr !! 208 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 209 default y
558 help <<
559 Adds support to dynamically detect <<
560 ISA-extension (Supervisor-mode: pag <<
561 enable its usage. <<
562 210
563 The memory type for a page contains !! 211 config ARCH_MAY_HAVE_PC_FDC
564 that indicate the cacheability, ide <<
565 properties for access to that page. <<
566 <<
567 The Svpbmt extension is only availa <<
568 <<
569 If you don't know what to do here, <<
570 <<
571 config TOOLCHAIN_HAS_V <<
572 bool 212 bool
573 default y 213 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 <<
578 214
579 config RISCV_ISA_V !! 215 config EMULATED_CMPXCHG
580 bool "VECTOR extension support" !! 216 bool
581 depends on TOOLCHAIN_HAS_V !! 217 default y if SPARC32
582 depends on FPU <<
583 select DYNAMIC_SIGFRAME <<
584 default y <<
585 help 218 help
586 Say N here if you want to disable al !! 219 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
587 in the kernel. !! 220 is emulated, and therefore it is not completely atomic.
588 <<
589 If you don't know what to do here, s <<
590 221
591 config RISCV_ISA_V_DEFAULT_ENABLE !! 222 # Makefile helpers
592 bool "Enable userspace Vector by defau !! 223 config SPARC32_SMP
593 depends on RISCV_ISA_V !! 224 bool
594 default y 225 default y
595 help !! 226 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. <<
609 227
610 config RISCV_ISA_V_PREEMPTIVE !! 228 config SPARC64_SMP
611 bool "Run kernel-mode Vector with kern !! 229 bool
612 depends on PREEMPTION <<
613 depends on RISCV_ISA_V <<
614 default y 230 default y
615 help !! 231 depends on SPARC64 && SMP
616 Usually, in-kernel SIMD routines are !! 232
617 Functions which envoke long running !! 233 config EARLYFB
618 vector unit to prevent blocking othe !! 234 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 235 default y
>> 236 depends on SPARC64
628 help 237 help
629 The Zawrs extension defines instruct !! 238 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 <<
651 239
652 config RISCV_ISA_ZBA !! 240 config SECCOMP
653 bool "Zba extension support for bit ma !! 241 bool "Enable seccomp to safely compute untrusted bytecode"
>> 242 depends on SPARC64 && PROC_FS
654 default y 243 default y
655 help 244 help
656 Add support for enabling optimisati !! 245 This kernel feature is useful for number crunching applications
657 extension is detected at boot. !! 246 that may need to compute untrusted bytecode during their
>> 247 execution. By using pipes or other transports made available to
>> 248 the process as file descriptors supporting the read/write
>> 249 syscalls, it's possible to isolate those applications in
>> 250 their own address space using seccomp. Once seccomp is
>> 251 enabled via /proc/<pid>/seccomp, it cannot be disabled
>> 252 and the task is only allowed to execute a few safe syscalls
>> 253 defined by each seccomp mode.
658 254
659 The Zba extension provides instruct !! 255 If unsure, say Y. Only embedded should say N here.
660 of addresses that index into arrays <<
661 256
662 If you don't know what to do here, !! 257 config HOTPLUG_CPU
>> 258 bool "Support for hot-pluggable CPUs"
>> 259 depends on SPARC64 && SMP
>> 260 help
>> 261 Say Y here to experiment with turning CPUs off and on. CPUs
>> 262 can be controlled through /sys/devices/system/cpu/cpu#.
>> 263 Say N if you want to disable CPU hotplug.
>> 264
>> 265 if SPARC64
>> 266 source "drivers/cpufreq/Kconfig"
>> 267 endif
663 268
664 config RISCV_ISA_ZBB !! 269 config US3_MC
665 bool "Zbb extension support for bit ma !! 270 tristate "UltraSPARC-III Memory Controller driver"
666 depends on TOOLCHAIN_HAS_ZBB !! 271 depends on SPARC64
667 depends on RISCV_ALTERNATIVE <<
668 default y 272 default y
669 help 273 help
670 Adds support to dynamically detect !! 274 This adds a driver for the UltraSPARC-III memory controller.
671 extension (basic bit manipulation) !! 275 Loading this driver allows exact mnemonic strings to be
672 !! 276 printed in the event of a memory error, so that the faulty DIMM
673 The Zbb extension provides instruct !! 277 on the motherboard can be matched to the error.
674 of bit-specific operations (count b <<
675 bitrotation, etc). <<
676 278
677 If you don't know what to do here, !! 279 If in doubt, say Y, as this information can be very useful.
678 280
679 config TOOLCHAIN_HAS_ZBC !! 281 # Global things across all Sun machines.
>> 282 config GENERIC_LOCKBREAK
680 bool 283 bool
681 default y 284 default y
682 depends on !64BIT || $(cc-option,-mabi !! 285 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 <<
686 286
687 config RISCV_ISA_ZBC !! 287 config NUMA
688 bool "Zbc extension support for carry- !! 288 bool "NUMA support"
689 depends on TOOLCHAIN_HAS_ZBC !! 289 depends on SPARC64 && SMP
690 depends on MMU !! 290
691 depends on RISCV_ALTERNATIVE !! 291 config NODES_SHIFT
692 default y !! 292 int "Maximum NUMA Nodes (as a power of 2)"
>> 293 range 4 5 if SPARC64
>> 294 default "5"
>> 295 depends on NEED_MULTIPLE_NODES
693 help 296 help
694 Adds support to dynamically detect !! 297 Specify the maximum number of NUMA Nodes available on the target
695 extension (carry-less multiplicatio !! 298 system. Increases memory reserved to accommodate various tables.
696 299
697 The Zbc extension could accelerate !! 300 # Some NUMA nodes have memory ranges that span
698 calculations. !! 301 # other nodes. Even though a pfn is valid and
>> 302 # between a node's start and end pfns, it may not
>> 303 # reside on that node. See memmap_init_zone()
>> 304 # for details.
>> 305 config NODES_SPAN_OTHER_NODES
>> 306 def_bool y
>> 307 depends on NEED_MULTIPLE_NODES
699 308
700 If you don't know what to do here, !! 309 config ARCH_SELECT_MEMORY_MODEL
>> 310 def_bool y if SPARC64
701 311
702 config RISCV_ISA_ZICBOM !! 312 config ARCH_SPARSEMEM_ENABLE
703 bool "Zicbom extension support for non !! 313 def_bool y if SPARC64
704 depends on MMU !! 314 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. <<
726 315
727 The Zicboz extension is used for fa !! 316 config ARCH_SPARSEMEM_DEFAULT
>> 317 def_bool y if SPARC64
728 318
729 If you don't know what to do here, !! 319 config FORCE_MAX_ZONEORDER
>> 320 int "Maximum zone order"
>> 321 default "13"
>> 322 help
>> 323 The kernel memory allocator divides physically contiguous memory
>> 324 blocks into "zones", where each zone is a power of two number of
>> 325 pages. This option selects the largest power of two that the kernel
>> 326 keeps in the memory allocator. If you need to allocate very large
>> 327 blocks of physically contiguous memory, then you may need to
>> 328 increase this value.
730 329
731 config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI !! 330 This config option is actually maximum order plus one. For example,
732 def_bool y !! 331 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 <<
746 332
747 config TOOLCHAIN_NEEDS_OLD_ISA_SPEC !! 333 if SPARC64 || COMPILE_TEST
748 def_bool y !! 334 source "kernel/power/Kconfig"
749 depends on TOOLCHAIN_NEEDS_EXPLICIT_ZI !! 335 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 <<
758 336
759 config FPU !! 337 config SCHED_SMT
760 bool "FPU support" !! 338 bool "SMT (Hyperthreading) scheduler support"
>> 339 depends on SPARC64 && SMP
761 default y 340 default y
762 help 341 help
763 Say N here if you want to disable al !! 342 SMT scheduler support improves the CPU scheduler's decision making
764 in the kernel. !! 343 when dealing with SPARC cpus at a cost of slightly increased overhead
>> 344 in some places. If unsure say N here.
765 345
766 If you don't know what to do here, s !! 346 config SCHED_MC
767 !! 347 bool "Multi-core scheduler support"
768 config IRQ_STACKS !! 348 depends on SPARC64 && SMP
769 bool "Independent irq & softirq stacks <<
770 default y 349 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 350 help
790 Embed support for emulating misalign !! 351 Multi-core scheduler support improves the CPU scheduler's decision
>> 352 making when dealing with multi-core CPU chips at a cost of slightly
>> 353 increased overhead in some places. If unsure say N here.
791 354
792 choice !! 355 config CMDLINE_BOOL
793 prompt "Unaligned Accesses Support" !! 356 bool "Default bootloader kernel arguments"
794 default RISCV_PROBE_UNALIGNED_ACCESS !! 357 depends on SPARC64
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 <<
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 <<
840 358
841 endchoice !! 359 config CMDLINE
>> 360 string "Initial kernel command string"
>> 361 depends on CMDLINE_BOOL
>> 362 default "console=ttyS0,9600 root=/dev/sda1"
>> 363 help
>> 364 Say Y here if you want to be able to pass default arguments to
>> 365 the kernel. This will be overridden by the bootloader, if you
>> 366 use one (such as SILO). This is most useful if you want to boot
>> 367 a kernel from TFTP, and want default options to be available
>> 368 with having them passed on the command line.
>> 369
>> 370 NOTE: This option WILL override the PROM bootargs setting!
>> 371
>> 372 config SUN_PM
>> 373 bool
>> 374 default y if SPARC32
>> 375 help
>> 376 Enable power management and CPU standby features on supported
>> 377 SPARC platforms.
>> 378
>> 379 config SPARC_LED
>> 380 tristate "Sun4m LED driver"
>> 381 depends on SPARC32
>> 382 help
>> 383 This driver toggles the front-panel LED on sun4m systems
>> 384 in a user-specifiable manner. Its state can be probed
>> 385 by reading /proc/led and its blinking mode can be changed
>> 386 via writes to /proc/led
>> 387
>> 388 config SERIAL_CONSOLE
>> 389 bool
>> 390 depends on SPARC32
>> 391 default y
>> 392 ---help---
>> 393 If you say Y here, it will be possible to use a serial port as the
>> 394 system console (the system console is the device which receives all
>> 395 kernel messages and warnings and which allows logins in single user
>> 396 mode). This could be useful if some terminal or printer is connected
>> 397 to that serial port.
>> 398
>> 399 Even if you say Y here, the currently visible virtual console
>> 400 (/dev/tty0) will still be used as the system console by default, but
>> 401 you can alter that using a kernel command line option such as
>> 402 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 403 your boot loader (silo) about how to pass options to the kernel at
>> 404 boot time.)
>> 405
>> 406 If you don't have a graphics card installed and you say Y here, the
>> 407 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 408 system console.
842 409
843 source "arch/riscv/Kconfig.vendor" !! 410 If unsure, say N.
844 411
845 endmenu # "Platform type" !! 412 config SPARC_LEON
>> 413 bool "Sparc Leon processor family"
>> 414 depends on SPARC32
>> 415 select USB_EHCI_BIG_ENDIAN_MMIO
>> 416 select USB_EHCI_BIG_ENDIAN_DESC
>> 417 select USB_UHCI_BIG_ENDIAN_MMIO
>> 418 select USB_UHCI_BIG_ENDIAN_DESC
>> 419 ---help---
>> 420 If you say Y here if you are running on a SPARC-LEON processor.
>> 421 The LEON processor is a synthesizable VHDL model of the
>> 422 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 423 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 424 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 425 toolchain at www.gaisler.com.
846 426
847 menu "Kernel features" !! 427 if SPARC_LEON
>> 428 menu "U-Boot options"
848 429
849 source "kernel/Kconfig.hz" !! 430 config UBOOT_LOAD_ADDR
>> 431 hex "uImage Load Address"
>> 432 default 0x40004000
>> 433 ---help---
>> 434 U-Boot kernel load address, the address in physical address space
>> 435 where u-boot will place the Linux kernel before booting it.
>> 436 This address is normally the base address of main memory + 0x4000.
850 437
851 config RISCV_SBI_V01 !! 438 config UBOOT_FLASH_ADDR
852 bool "SBI v0.1 support" !! 439 hex "uImage.o Load Address"
853 depends on RISCV_SBI !! 440 default 0x00080000
854 help !! 441 ---help---
855 This config allows kernel to use SBI !! 442 Optional setting only affecting the uImage.o ELF-image used to
856 deprecated in future once legacy M-m !! 443 download the uImage file to the target using a ELF-loader other than
>> 444 U-Boot. It may for example be used to download an uImage to FLASH with
>> 445 the GRMON utility before even starting u-boot.
857 446
858 config RISCV_BOOT_SPINWAIT !! 447 config UBOOT_ENTRY_ADDR
859 bool "Spinwait booting method" !! 448 hex "uImage Entry Address"
860 depends on SMP !! 449 default 0xf0004000
861 default y if RISCV_SBI_V01 || RISCV_M_ !! 450 ---help---
862 help !! 451 Do not change this unless you know what you're doing. This is
863 This enables support for booting Lin !! 452 hardcoded by the SPARC32 and LEON port.
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. <<
875 453
876 If unsure what to do here, say N. !! 454 This is the virtual address u-boot jumps to when booting the Linux
>> 455 Kernel.
877 456
878 config ARCH_SUPPORTS_KEXEC !! 457 endmenu
879 def_bool y !! 458 endif
880 459
881 config ARCH_SELECTS_KEXEC !! 460 endmenu
882 def_bool y <<
883 depends on KEXEC <<
884 select HOTPLUG_CPU if SMP <<
885 461
886 config ARCH_SUPPORTS_KEXEC_FILE !! 462 menu "Bus options (PCI etc.)"
887 def_bool 64BIT !! 463 config SBUS
888 !! 464 bool
889 config ARCH_SELECTS_KEXEC_FILE !! 465 default y
890 def_bool y <<
891 depends on KEXEC_FILE <<
892 select HAVE_IMA_KEXEC if IMA <<
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 <<
900 466
901 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 467 config SBUSCHAR
902 def_bool CRASH_RESERVE !! 468 bool
>> 469 default y
903 470
904 config COMPAT !! 471 config SUN_LDOMS
905 bool "Kernel support for 32-bit U-mode !! 472 bool "Sun Logical Domains support"
906 default 64BIT !! 473 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 474 help
920 This changes the kernel so it can mo !! 475 Say Y here is you want to support virtual devices via
921 under a hypervisor, potentially impr !! 476 Logical Domains.
922 over full virtualization. !! 477
923 !! 478 config PCI
924 config PARAVIRT_TIME_ACCOUNTING !! 479 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 480 help
940 This builds a kernel as a Position I !! 481 Find out whether your system includes a PCI bus. PCI is the name of
941 which retains all relocation metadat !! 482 a bus system, i.e. the way the CPU talks to the other stuff inside
942 kernel binary at runtime to a differ !! 483 your box. If you say Y here, the kernel will include drivers and
943 address it was linked at. !! 484 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 <<
966 485
967 If unsure, say N. !! 486 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
>> 487 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
>> 488 All of these platforms are extremely obscure, so say N if unsure.
968 489
969 endmenu # "Kernel features" !! 490 config PCI_DOMAINS
>> 491 def_bool PCI if SPARC64
970 492
971 menu "Boot options" !! 493 config PCI_SYSCALL
>> 494 def_bool PCI
972 495
973 config CMDLINE !! 496 config PCIC_PCI
974 string "Built-in kernel command line" !! 497 bool
975 help !! 498 depends on PCI && SPARC32 && !SPARC_LEON
976 For most platforms, the arguments fo !! 499 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. <<
991 500
992 config CMDLINE_FALLBACK !! 501 config LEON_PCI
993 bool "Use bootloader kernel arguments !! 502 bool
994 help !! 503 depends on PCI && SPARC_LEON
995 Use the built-in command line as fal !! 504 default y
996 during boot. This is the default beh <<
997 505
998 config CMDLINE_EXTEND !! 506 config SPARC_GRPCI1
999 bool "Extend bootloader kernel argumen !! 507 bool "GRPCI Host Bridge Support"
>> 508 depends on LEON_PCI
>> 509 default y
1000 help 510 help
1001 The command-line arguments provided !! 511 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
1002 appended to the built-in command li !! 512 PCI host controller is typically found in GRLIB SPARC32/LEON
1003 cases where the provided arguments !! 513 systems. The driver has one property (all_pci_errors) controlled
1004 you don't want to or cannot modify !! 514 from the bootloader that makes the GRPCI to generate interrupts
>> 515 on detected PCI Parity and System errors.
1005 516
1006 config CMDLINE_FORCE !! 517 config SPARC_GRPCI2
1007 bool "Always use the default kernel c !! 518 bool "GRPCI2 Host Bridge Support"
1008 help !! 519 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 520 default y
1043 help 521 help
1044 This enables SMBIOS/DMI feature for !! 522 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 523
1050 config CC_HAVE_STACKPROTECTOR_TLS !! 524 source "drivers/pci/Kconfig"
1051 def_bool $(cc-option,-mstack-protecto <<
1052 525
1053 config STACKPROTECTOR_PER_TASK !! 526 source "drivers/pcmcia/Kconfig"
1054 def_bool y <<
1055 depends on !RANDSTRUCT <<
1056 depends on STACKPROTECTOR && CC_HAVE_ <<
1057 527
1058 config PHYS_RAM_BASE_FIXED !! 528 config SUN_OPENPROMFS
1059 bool "Explicitly specified physical R !! 529 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 530 help
1080 Execute-In-Place allows the kernel !! 531 If you say Y, the OpenPROM device tree will be available as a
1081 directly addressable by the CPU, su !! 532 virtual file system, which you can mount to /proc/openprom by "mount
1082 space since the text section of the !! 533 -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 534
1099 If unsure, say N. !! 535 To compile the /proc/openprom support as a module, choose M here: the
>> 536 module will be called openpromfs.
1100 537
1101 config XIP_PHYS_ADDR !! 538 Only choose N if you know in advance that you will not need to modify
1102 hex "XIP Kernel Physical Location" !! 539 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 540
1110 config RISCV_ISA_FALLBACK !! 541 # Makefile helpers
1111 bool "Permit falling back to parsing !! 542 config SPARC64_PCI
>> 543 bool
1112 default y 544 default y
1113 help !! 545 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 546
1137 config BUILTIN_DTB_SOURCE !! 547 config SPARC64_PCI_MSI
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 <<
1145 endmenu # "Boot options" <<
1146 <<
1147 config PORTABLE <<
1148 bool 548 bool
1149 default !NONPORTABLE !! 549 default y
1150 select EFI !! 550 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 551
1176 source "drivers/cpufreq/Kconfig" !! 552 endmenu
1177 553
1178 endmenu # "CPU Power Management" !! 554 config COMPAT
>> 555 bool
>> 556 depends on SPARC64
>> 557 default y
>> 558 select COMPAT_BINFMT_ELF if BINFMT_ELF
>> 559 select HAVE_UID16
>> 560 select ARCH_WANT_OLD_COMPAT_IPC
>> 561 select COMPAT_OLD_SIGACTION
1179 562
1180 source "arch/riscv/kvm/Kconfig" !! 563 config SYSVIPC_COMPAT
>> 564 bool
>> 565 depends on COMPAT && SYSVIPC
>> 566 default y
1181 567
1182 source "drivers/acpi/Kconfig" !! 568 source "drivers/sbus/char/Kconfig"
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