1 # SPDX-License-Identifier: GPL-2.0 !! 1 config 64BIT
2 config LOONGARCH !! 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.
>> 8
>> 9 Say yes to build a 64-bit kernel - formerly known as sparc64
>> 10 Say no to build a 32-bit kernel - formerly known as sparc
>> 11
>> 12 config SPARC
3 bool 13 bool
4 default y 14 default y
5 select ACPI !! 15 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
6 select ACPI_GENERIC_GSI if ACPI <<
7 select ACPI_MCFG if ACPI <<
8 select ACPI_HOTPLUG_CPU if ACPI_PROCES <<
9 select ACPI_PPTT if ACPI <<
10 select ACPI_SYSTEM_POWER_STATES_SUPPOR <<
11 select ARCH_BINFMT_ELF_STATE <<
12 select ARCH_DISABLE_KASAN_INLINE <<
13 select ARCH_ENABLE_MEMORY_HOTPLUG <<
14 select ARCH_ENABLE_MEMORY_HOTREMOVE <<
15 select ARCH_ENABLE_THP_MIGRATION if TR <<
16 select ARCH_HAS_ACPI_TABLE_UPGRADE <<
17 select ARCH_HAS_CPU_FINALIZE_INIT <<
18 select ARCH_HAS_CURRENT_STACK_POINTER <<
19 select ARCH_HAS_DEBUG_VM_PGTABLE <<
20 select ARCH_HAS_FAST_MULTIPLIER <<
21 select ARCH_HAS_FORTIFY_SOURCE <<
22 select ARCH_HAS_KCOV <<
23 select ARCH_HAS_KERNEL_FPU_SUPPORT if <<
24 select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS <<
25 select ARCH_HAS_NON_OVERLAPPING_ADDRES <<
26 select ARCH_HAS_PTE_DEVMAP <<
27 select ARCH_HAS_PTE_SPECIAL <<
28 select ARCH_HAS_SET_MEMORY <<
29 select ARCH_HAS_SET_DIRECT_MAP <<
30 select ARCH_HAS_TICK_BROADCAST if GENE <<
31 select ARCH_INLINE_READ_LOCK if !PREEM <<
32 select ARCH_INLINE_READ_LOCK_BH if !PR <<
33 select ARCH_INLINE_READ_LOCK_IRQ if !P <<
34 select ARCH_INLINE_READ_LOCK_IRQSAVE i <<
35 select ARCH_INLINE_READ_UNLOCK if !PRE <<
36 select ARCH_INLINE_READ_UNLOCK_BH if ! <<
37 select ARCH_INLINE_READ_UNLOCK_IRQ if <<
38 select ARCH_INLINE_READ_UNLOCK_IRQREST <<
39 select ARCH_INLINE_WRITE_LOCK if !PREE <<
40 select ARCH_INLINE_WRITE_LOCK_BH if !P <<
41 select ARCH_INLINE_WRITE_LOCK_IRQ if ! <<
42 select ARCH_INLINE_WRITE_LOCK_IRQSAVE <<
43 select ARCH_INLINE_WRITE_UNLOCK if !PR <<
44 select ARCH_INLINE_WRITE_UNLOCK_BH if <<
45 select ARCH_INLINE_WRITE_UNLOCK_IRQ if <<
46 select ARCH_INLINE_WRITE_UNLOCK_IRQRES <<
47 select ARCH_INLINE_SPIN_TRYLOCK if !PR <<
48 select ARCH_INLINE_SPIN_TRYLOCK_BH if <<
49 select ARCH_INLINE_SPIN_LOCK if !PREEM <<
50 select ARCH_INLINE_SPIN_LOCK_BH if !PR <<
51 select ARCH_INLINE_SPIN_LOCK_IRQ if !P <<
52 select ARCH_INLINE_SPIN_LOCK_IRQSAVE i <<
53 select ARCH_INLINE_SPIN_UNLOCK if !PRE <<
54 select ARCH_INLINE_SPIN_UNLOCK_BH if ! <<
55 select ARCH_INLINE_SPIN_UNLOCK_IRQ if <<
56 select ARCH_INLINE_SPIN_UNLOCK_IRQREST <<
57 select ARCH_KEEP_MEMBLOCK <<
58 select ARCH_MIGHT_HAVE_PC_PARPORT <<
59 select ARCH_MIGHT_HAVE_PC_SERIO 16 select ARCH_MIGHT_HAVE_PC_SERIO
60 select ARCH_SPARSEMEM_ENABLE !! 17 select OF
61 select ARCH_STACKWALK !! 18 select OF_PROMTREE
62 select ARCH_SUPPORTS_ACPI !! 19 select HAVE_IDE
63 select ARCH_SUPPORTS_ATOMIC_RMW !! 20 select HAVE_OPROFILE
64 select ARCH_SUPPORTS_HUGETLBFS !! 21 select HAVE_ARCH_KGDB if !SMP || SPARC64
65 select ARCH_SUPPORTS_INT128 if CC_HAS_ !! 22 select HAVE_ARCH_TRACEHOOK
66 select ARCH_SUPPORTS_LTO_CLANG !! 23 select HAVE_EXIT_THREAD
67 select ARCH_SUPPORTS_LTO_CLANG_THIN !! 24 select SYSCTL_EXCEPTION_TRACE
68 select ARCH_SUPPORTS_NUMA_BALANCING !! 25 select RTC_CLASS
69 select ARCH_USE_BUILTIN_BSWAP !! 26 select RTC_DRV_M48T59
70 select ARCH_USE_CMPXCHG_LOCKREF !! 27 select RTC_SYSTOHC
71 select ARCH_USE_QUEUED_RWLOCKS !! 28 select HAVE_ARCH_JUMP_LABEL if SPARC64
72 select ARCH_USE_QUEUED_SPINLOCKS <<
73 select ARCH_WANT_DEFAULT_BPF_JIT <<
74 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_ <<
75 select ARCH_WANT_LD_ORPHAN_WARN <<
76 select ARCH_WANT_OPTIMIZE_HUGETLB_VMEM <<
77 select ARCH_WANTS_NO_INSTR <<
78 select ARCH_WANTS_THP_SWAP if HAVE_ARC <<
79 select BUILDTIME_TABLE_SORT <<
80 select COMMON_CLK <<
81 select CPU_PM <<
82 select EFI <<
83 select GENERIC_CLOCKEVENTS <<
84 select GENERIC_CMOS_UPDATE <<
85 select GENERIC_CPU_AUTOPROBE <<
86 select GENERIC_CPU_DEVICES <<
87 select GENERIC_CPU_VULNERABILITIES <<
88 select GENERIC_ENTRY <<
89 select GENERIC_GETTIMEOFDAY <<
90 select GENERIC_IOREMAP if !ARCH_IOREMA <<
91 select GENERIC_IRQ_MATRIX_ALLOCATOR <<
92 select GENERIC_IRQ_MULTI_HANDLER <<
93 select GENERIC_IRQ_PROBE <<
94 select GENERIC_IRQ_SHOW 29 select GENERIC_IRQ_SHOW
95 select GENERIC_LIB_ASHLDI3 !! 30 select ARCH_WANT_IPC_PARSE_VERSION
96 select GENERIC_LIB_ASHRDI3 <<
97 select GENERIC_LIB_CMPDI2 <<
98 select GENERIC_LIB_LSHRDI3 <<
99 select GENERIC_LIB_UCMPDI2 <<
100 select GENERIC_LIB_DEVMEM_IS_ALLOWED <<
101 select GENERIC_PCI_IOMAP 31 select GENERIC_PCI_IOMAP
102 select GENERIC_SCHED_CLOCK !! 32 select HAVE_NMI_WATCHDOG if SPARC64
>> 33 select HAVE_CBPF_JIT if SPARC32
>> 34 select HAVE_EBPF_JIT if SPARC64
>> 35 select HAVE_DEBUG_BUGVERBOSE
103 select GENERIC_SMP_IDLE_THREAD 36 select GENERIC_SMP_IDLE_THREAD
104 select GENERIC_TIME_VSYSCALL !! 37 select GENERIC_CLOCKEVENTS
105 select GENERIC_VDSO_TIME_NS !! 38 select GENERIC_STRNCPY_FROM_USER
106 select GPIOLIB !! 39 select GENERIC_STRNLEN_USER
107 select HAS_IOPORT !! 40 select MODULES_USE_ELF_RELA
108 select HAVE_ARCH_AUDITSYSCALL !! 41 select ODD_RT_SIGACTION
109 select HAVE_ARCH_JUMP_LABEL !! 42 select OLD_SIGSUSPEND
110 select HAVE_ARCH_JUMP_LABEL_RELATIVE !! 43 select ARCH_HAS_SG_CHAIN
111 select HAVE_ARCH_KASAN !! 44 select CPU_NO_EFFICIENT_FFS
112 select HAVE_ARCH_KFENCE !! 45 select LOCKDEP_SMALL if LOCKDEP
113 select HAVE_ARCH_KGDB if PERF_EVENTS !! 46 select NEED_DMA_MAP_STATE
114 select HAVE_ARCH_MMAP_RND_BITS if MMU !! 47 select NEED_SG_DMA_LENGTH
115 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS !! 48
116 select HAVE_ARCH_SECCOMP !! 49 config SPARC32
117 select HAVE_ARCH_SECCOMP_FILTER !! 50 def_bool !64BIT
118 select HAVE_ARCH_TRACEHOOK !! 51 select ARCH_HAS_SYNC_DMA_FOR_CPU
>> 52 select DMA_DIRECT_OPS
>> 53 select GENERIC_ATOMIC64
>> 54 select CLZ_TAB
>> 55 select HAVE_UID16
>> 56 select OLD_SIGACTION
>> 57
>> 58 config SPARC64
>> 59 def_bool 64BIT
>> 60 select HAVE_FUNCTION_TRACER
>> 61 select HAVE_FUNCTION_GRAPH_TRACER
>> 62 select HAVE_KRETPROBES
>> 63 select HAVE_KPROBES
>> 64 select HAVE_RCU_TABLE_FREE if SMP
>> 65 select HAVE_MEMBLOCK_NODE_MAP
119 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 66 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
120 select HAVE_ARCH_USERFAULTFD_MINOR if <<
121 select HAVE_ASM_MODVERSIONS <<
122 select HAVE_CONTEXT_TRACKING_USER <<
123 select HAVE_C_RECORDMCOUNT <<
124 select HAVE_DEBUG_KMEMLEAK <<
125 select HAVE_DEBUG_STACKOVERFLOW <<
126 select HAVE_DMA_CONTIGUOUS <<
127 select HAVE_DYNAMIC_FTRACE 67 select HAVE_DYNAMIC_FTRACE
128 select HAVE_DYNAMIC_FTRACE_WITH_ARGS <<
129 select HAVE_DYNAMIC_FTRACE_WITH_DIRECT <<
130 select HAVE_DYNAMIC_FTRACE_WITH_REGS <<
131 select HAVE_EBPF_JIT <<
132 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
133 select HAVE_EXIT_THREAD <<
134 select HAVE_GUP_FAST <<
135 select HAVE_FTRACE_MCOUNT_RECORD 68 select HAVE_FTRACE_MCOUNT_RECORD
136 select HAVE_FUNCTION_ARG_ACCESS_API <<
137 select HAVE_FUNCTION_ERROR_INJECTION <<
138 select HAVE_FUNCTION_GRAPH_RETVAL if H <<
139 select HAVE_FUNCTION_GRAPH_TRACER <<
140 select HAVE_FUNCTION_TRACER <<
141 select HAVE_GCC_PLUGINS <<
142 select HAVE_GENERIC_VDSO <<
143 select HAVE_HW_BREAKPOINT if PERF_EVEN <<
144 select HAVE_IOREMAP_PROT <<
145 select HAVE_IRQ_EXIT_ON_IRQ_STACK <<
146 select HAVE_IRQ_TIME_ACCOUNTING <<
147 select HAVE_KPROBES <<
148 select HAVE_KPROBES_ON_FTRACE <<
149 select HAVE_KRETPROBES <<
150 select HAVE_LIVEPATCH <<
151 select HAVE_MOD_ARCH_SPECIFIC <<
152 select HAVE_NMI <<
153 select HAVE_OBJTOOL if AS_HAS_EXPLICIT <<
154 select HAVE_PCI <<
155 select HAVE_PERF_EVENTS <<
156 select HAVE_PERF_REGS <<
157 select HAVE_PERF_USER_STACK_DUMP <<
158 select HAVE_PREEMPT_DYNAMIC_KEY <<
159 select HAVE_REGS_AND_STACK_ACCESS_API <<
160 select HAVE_RELIABLE_STACKTRACE if UNW <<
161 select HAVE_RETHOOK <<
162 select HAVE_RSEQ <<
163 select HAVE_RUST <<
164 select HAVE_SAMPLE_FTRACE_DIRECT <<
165 select HAVE_SAMPLE_FTRACE_DIRECT_MULTI <<
166 select HAVE_SETUP_PER_CPU_AREA if NUMA <<
167 select HAVE_STACK_VALIDATION if HAVE_O <<
168 select HAVE_STACKPROTECTOR <<
169 select HAVE_SYSCALL_TRACEPOINTS 69 select HAVE_SYSCALL_TRACEPOINTS
170 select HAVE_TIF_NOHZ !! 70 select HAVE_CONTEXT_TRACKING
171 select HAVE_VIRT_CPU_ACCOUNTING_GEN if !! 71 select HAVE_DEBUG_KMEMLEAK
172 select IRQ_FORCED_THREADING !! 72 select IOMMU_HELPER
173 select IRQ_LOONGARCH_CPU <<
174 select LOCK_MM_AND_FIND_VMA <<
175 select MMU_GATHER_MERGE_VMAS if MMU <<
176 select MODULES_USE_ELF_RELA if MODULES <<
177 select NEED_PER_CPU_EMBED_FIRST_CHUNK <<
178 select NEED_PER_CPU_PAGE_FIRST_CHUNK <<
179 select OF <<
180 select OF_EARLY_FLATTREE <<
181 select PCI <<
182 select PCI_DOMAINS_GENERIC <<
183 select PCI_ECAM if ACPI <<
184 select PCI_LOONGSON <<
185 select PCI_MSI_ARCH_FALLBACKS <<
186 select PCI_QUIRKS <<
187 select PERF_USE_VMALLOC <<
188 select RTC_LIB <<
189 select SPARSE_IRQ 73 select SPARSE_IRQ
190 select SYSCTL_ARCH_UNALIGN_ALLOW !! 74 select RTC_DRV_CMOS
191 select SYSCTL_ARCH_UNALIGN_NO_WARN !! 75 select RTC_DRV_BQ4802
192 select SYSCTL_EXCEPTION_TRACE !! 76 select RTC_DRV_SUN4V
193 select SWIOTLB !! 77 select RTC_DRV_STARFIRE
194 select TRACE_IRQFLAGS_SUPPORT !! 78 select HAVE_PERF_EVENTS
195 select USE_PERCPU_NUMA_NODE_ID !! 79 select PERF_USE_VMALLOC
196 select USER_STACKTRACE_SUPPORT !! 80 select IRQ_PREFLOW_FASTEOI
197 select VDSO_GETRANDOM !! 81 select ARCH_HAVE_NMI_SAFE_CMPXCHG
198 select ZONE_DMA32 !! 82 select HAVE_C_RECORDMCOUNT
199 !! 83 select HAVE_ARCH_AUDITSYSCALL
200 config 32BIT !! 84 select ARCH_SUPPORTS_ATOMIC_RMW
201 bool !! 85 select HAVE_NMI
202 !! 86 select HAVE_REGS_AND_STACK_ACCESS_API
203 config 64BIT !! 87 select ARCH_USE_QUEUED_RWLOCKS
204 def_bool y !! 88 select ARCH_USE_QUEUED_SPINLOCKS
205 !! 89 select GENERIC_TIME_VSYSCALL
206 config GENERIC_BUG !! 90 select ARCH_CLOCKSOURCE_DATA
207 def_bool y !! 91 select ARCH_HAS_PTE_SPECIAL
208 depends on BUG <<
209 92
210 config GENERIC_BUG_RELATIVE_POINTERS !! 93 config ARCH_DEFCONFIG
211 def_bool y !! 94 string
212 depends on GENERIC_BUG !! 95 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
>> 96 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
213 97
214 config GENERIC_CALIBRATE_DELAY !! 98 config ARCH_PROC_KCORE_TEXT
215 def_bool y 99 def_bool y
216 100
217 config GENERIC_CSUM !! 101 config CPU_BIG_ENDIAN
218 def_bool y 102 def_bool y
219 103
220 config GENERIC_HWEIGHT !! 104 config ARCH_ATU
221 def_bool y !! 105 bool
>> 106 default y if SPARC64
222 107
223 config L1_CACHE_SHIFT !! 108 config STACKTRACE_SUPPORT
224 int !! 109 bool
225 default "6" !! 110 default y if SPARC64
226 111
227 config LOCKDEP_SUPPORT 112 config LOCKDEP_SUPPORT
228 bool 113 bool
229 default y !! 114 default y if SPARC64
230 115
231 config STACKTRACE_SUPPORT !! 116 config ARCH_HIBERNATION_POSSIBLE
>> 117 def_bool y if SPARC64
>> 118
>> 119 config AUDIT_ARCH
232 bool 120 bool
233 default y 121 default y
234 122
235 # MACH_LOONGSON32 and MACH_LOONGSON64 are deli !! 123 config HAVE_SETUP_PER_CPU_AREA
236 # MIPS Loongson code, to preserve Loongson-spe !! 124 def_bool y if SPARC64
237 # are shared between architectures, and specif <<
238 config MACH_LOONGSON32 <<
239 def_bool 32BIT <<
240 125
241 config MACH_LOONGSON64 !! 126 config NEED_PER_CPU_EMBED_FIRST_CHUNK
242 def_bool 64BIT !! 127 def_bool y if SPARC64
243 128
244 config FIX_EARLYCON_MEM !! 129 config NEED_PER_CPU_PAGE_FIRST_CHUNK
245 def_bool y !! 130 def_bool y if SPARC64
246 131
247 config PGTABLE_2LEVEL !! 132 config MMU
248 bool 133 bool
>> 134 default y
249 135
250 config PGTABLE_3LEVEL !! 136 config HIGHMEM
251 bool 137 bool
>> 138 default y if SPARC32
252 139
253 config PGTABLE_4LEVEL !! 140 config ZONE_DMA
254 bool 141 bool
>> 142 default y if SPARC32
255 143
256 config PGTABLE_LEVELS !! 144 config GENERIC_ISA_DMA
257 int <<
258 default 2 if PGTABLE_2LEVEL <<
259 default 3 if PGTABLE_3LEVEL <<
260 default 4 if PGTABLE_4LEVEL <<
261 <<
262 config SCHED_OMIT_FRAME_POINTER <<
263 bool 145 bool
264 default y !! 146 default y if SPARC32
265 <<
266 config AS_HAS_EXPLICIT_RELOCS <<
267 def_bool $(as-instr,x:pcalau12i \$t0$( <<
268 <<
269 config AS_HAS_FCSR_CLASS <<
270 def_bool $(as-instr,movfcsr2gr \$t0$(c <<
271 <<
272 config AS_HAS_THIN_ADD_SUB <<
273 def_bool $(cc-option,-Wa$(comma)-mthin <<
274 <<
275 config AS_HAS_LSX_EXTENSION <<
276 def_bool $(as-instr,vld \$vr0$(comma)\ <<
277 <<
278 config AS_HAS_LASX_EXTENSION <<
279 def_bool $(as-instr,xvld \$xr0$(comma) <<
280 <<
281 config AS_HAS_LBT_EXTENSION <<
282 def_bool $(as-instr,movscr2gr \$a0$(co <<
283 <<
284 config AS_HAS_LVZ_EXTENSION <<
285 def_bool $(as-instr,hvcl 0) <<
286 <<
287 menu "Kernel type and options" <<
288 <<
289 source "kernel/Kconfig.hz" <<
290 <<
291 choice <<
292 prompt "Page Table Layout" <<
293 default 16KB_2LEVEL if 32BIT <<
294 default 16KB_3LEVEL if 64BIT <<
295 help <<
296 Allows choosing the page table layou <<
297 of page size and page table levels. <<
298 address space are determined by the <<
299 147
300 config 4KB_3LEVEL !! 148 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
301 bool "4KB with 3 levels" !! 149 def_bool y if SPARC64
302 select HAVE_PAGE_SIZE_4KB <<
303 select PGTABLE_3LEVEL <<
304 help <<
305 This option selects 4KB page size wi <<
306 support a maximum of 39 bits of appl <<
307 150
308 config 4KB_4LEVEL !! 151 config PGTABLE_LEVELS
309 bool "4KB with 4 levels" !! 152 default 4 if 64BIT
310 select HAVE_PAGE_SIZE_4KB !! 153 default 3
311 select PGTABLE_4LEVEL <<
312 help <<
313 This option selects 4KB page size wi <<
314 support a maximum of 48 bits of appl <<
315 154
316 config 16KB_2LEVEL !! 155 config ARCH_SUPPORTS_UPROBES
317 bool "16KB with 2 levels" !! 156 def_bool y if SPARC64
318 select HAVE_PAGE_SIZE_16KB <<
319 select PGTABLE_2LEVEL <<
320 help <<
321 This option selects 16KB page size w <<
322 support a maximum of 36 bits of appl <<
323 157
324 config 16KB_3LEVEL !! 158 menu "Processor type and features"
325 bool "16KB with 3 levels" <<
326 select HAVE_PAGE_SIZE_16KB <<
327 select PGTABLE_3LEVEL <<
328 help <<
329 This option selects 16KB page size w <<
330 support a maximum of 47 bits of appl <<
331 159
332 config 64KB_2LEVEL !! 160 config SMP
333 bool "64KB with 2 levels" !! 161 bool "Symmetric multi-processing support"
334 select HAVE_PAGE_SIZE_64KB !! 162 ---help---
335 select PGTABLE_2LEVEL !! 163 This enables support for systems with more than one CPU. If you have
336 help !! 164 a system with only one CPU, say N. If you have a system with more
337 This option selects 64KB page size w !! 165 than one CPU, say Y.
338 support a maximum of 42 bits of appl <<
339 166
340 config 64KB_3LEVEL !! 167 If you say N here, the kernel will run on uni- and multiprocessor
341 bool "64KB with 3 levels" !! 168 machines, but will use only one CPU of a multiprocessor machine. If
342 select HAVE_PAGE_SIZE_64KB !! 169 you say Y here, the kernel will run on many, but not all,
343 select PGTABLE_3LEVEL !! 170 uniprocessor machines. On a uniprocessor machine, the kernel
344 help !! 171 will run faster if you say N here.
345 This option selects 64KB page size w <<
346 support a maximum of 55 bits of appl <<
347 172
348 endchoice !! 173 People using multiprocessor machines who say Y here should also say
>> 174 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
>> 175 Management" code will be disabled if you say Y here.
349 176
350 config CMDLINE !! 177 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
351 string "Built-in kernel command line" !! 178 available at <http://www.tldp.org/docs.html#howto>.
352 help <<
353 For most platforms, the arguments fo <<
354 are provided at run-time, during boo <<
355 where either no arguments are being <<
356 arguments are insufficient or even i <<
357 179
358 When that occurs, it is possible to !! 180 If you don't know what to do here, say N.
359 line here and choose how the kernel <<
360 181
361 choice !! 182 config NR_CPUS
362 prompt "Kernel command line type" !! 183 int "Maximum number of CPUs"
363 default CMDLINE_BOOTLOADER !! 184 depends on SMP
364 help !! 185 range 2 32 if SPARC32
365 Choose how the kernel will handle th !! 186 range 2 4096 if SPARC64
366 line. !! 187 default 32 if SPARC32
>> 188 default 4096 if SPARC64
367 189
368 config CMDLINE_BOOTLOADER !! 190 source kernel/Kconfig.hz
369 bool "Use bootloader kernel arguments <<
370 help <<
371 Prefer the command-line passed by th <<
372 Use the built-in command line as fal <<
373 during boot. This is the default beh <<
374 191
375 config CMDLINE_EXTEND !! 192 config RWSEM_GENERIC_SPINLOCK
376 bool "Use built-in to extend bootloade !! 193 bool
377 help !! 194 default y if SPARC32
378 The command-line arguments provided <<
379 appended to the built-in command lin <<
380 cases where the provided arguments a <<
381 you don't want to or cannot modify t <<
382 195
383 config CMDLINE_FORCE !! 196 config RWSEM_XCHGADD_ALGORITHM
384 bool "Always use the built-in kernel c !! 197 bool
385 help !! 198 default y if SPARC64
386 Always use the built-in command line <<
387 boot. This is useful in case you nee <<
388 command line on systems where you do <<
389 over it. <<
390 199
391 endchoice !! 200 config GENERIC_HWEIGHT
>> 201 bool
>> 202 default y
392 203
393 config BUILTIN_DTB !! 204 config GENERIC_CALIBRATE_DELAY
394 bool "Enable built-in dtb in kernel" !! 205 bool
395 depends on OF !! 206 default y
396 help <<
397 Some existing systems do not provide <<
398 the kernel at boot time. Let's provi <<
399 kernel, keyed by the dts filename, c <<
400 207
401 Built-in DTBs are generic enough and !! 208 config ARCH_MAY_HAVE_PC_FDC
>> 209 bool
>> 210 default y
402 211
403 config BUILTIN_DTB_NAME !! 212 config EMULATED_CMPXCHG
404 string "Source file for built-in dtb" !! 213 bool
405 depends on BUILTIN_DTB !! 214 default y if SPARC32
406 help 215 help
407 Base name (without suffix, relative !! 216 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
408 for the DTS file that will be used t !! 217 is emulated, and therefore it is not completely atomic.
409 the kernel. <<
410 218
411 config DMI !! 219 # Makefile helpers
412 bool "Enable DMI scanning" !! 220 config SPARC32_SMP
413 select DMI_SCAN_MACHINE_NON_EFI_FALLBA !! 221 bool
414 default y 222 default y
415 help !! 223 depends on SPARC32 && SMP
416 This enables SMBIOS/DMI feature for <<
417 DMI to identify machine quirks. <<
418 <<
419 config EFI <<
420 bool "EFI runtime service support" <<
421 select UCS2_STRING <<
422 select EFI_RUNTIME_WRAPPERS <<
423 help <<
424 This enables the kernel to use EFI r <<
425 available (such as the EFI variable <<
426 224
427 config EFI_STUB !! 225 config SPARC64_SMP
428 bool "EFI boot stub support" !! 226 bool
429 default y 227 default y
430 depends on EFI !! 228 depends on SPARC64 && SMP
431 select EFI_GENERIC_STUB <<
432 help <<
433 This kernel feature allows the kerne <<
434 EFI firmware without the use of a bo <<
435 229
436 config SCHED_SMT !! 230 config EARLYFB
437 bool "SMT scheduler support" !! 231 bool "Support for early boot text console"
438 depends on SMP <<
439 default y 232 default y
>> 233 depends on SPARC64
440 help 234 help
441 Improves scheduler's performance whe !! 235 Say Y here to enable a faster early framebuffer boot console.
442 threads in one physical core. <<
443 236
444 config SMP !! 237 config SECCOMP
445 bool "Multi-Processing support" !! 238 bool "Enable seccomp to safely compute untrusted bytecode"
>> 239 depends on SPARC64 && PROC_FS
>> 240 default y
446 help 241 help
447 This enables support for systems wit !! 242 This kernel feature is useful for number crunching applications
448 a system with only one CPU, say N. I !! 243 that may need to compute untrusted bytecode during their
449 than one CPU, say Y. !! 244 execution. By using pipes or other transports made available to
450 !! 245 the process as file descriptors supporting the read/write
451 If you say N here, the kernel will r !! 246 syscalls, it's possible to isolate those applications in
452 machines, but will use only one CPU !! 247 their own address space using seccomp. Once seccomp is
453 you say Y here, the kernel will run !! 248 enabled via /proc/<pid>/seccomp, it cannot be disabled
454 uniprocessor machines. On a uniproce !! 249 and the task is only allowed to execute a few safe syscalls
455 will run faster if you say N here. !! 250 defined by each seccomp mode.
456 <<
457 See also the SMP-HOWTO available at <<
458 251
459 If you don't know what to do here, s !! 252 If unsure, say Y. Only embedded should say N here.
460 253
461 config HOTPLUG_CPU 254 config HOTPLUG_CPU
462 bool "Support for hot-pluggable CPUs" 255 bool "Support for hot-pluggable CPUs"
463 depends on SMP !! 256 depends on SPARC64 && SMP
464 select GENERIC_IRQ_MIGRATION <<
465 help 257 help
466 Say Y here to allow turning CPUs off !! 258 Say Y here to experiment with turning CPUs off and on. CPUs
467 controlled through /sys/devices/syst !! 259 can be controlled through /sys/devices/system/cpu/cpu#.
468 (Note: power management support will <<
469 automatically on SMP systems. ) <<
470 Say N if you want to disable CPU hot 260 Say N if you want to disable CPU hotplug.
471 261
472 config NR_CPUS !! 262 if SPARC64
473 int "Maximum number of CPUs (2-256)" !! 263 source "drivers/cpufreq/Kconfig"
474 range 2 256 !! 264 endif
475 depends on SMP !! 265
476 default "64" !! 266 config US3_MC
>> 267 tristate "UltraSPARC-III Memory Controller driver"
>> 268 depends on SPARC64
>> 269 default y
477 help 270 help
478 This allows you to specify the maxim !! 271 This adds a driver for the UltraSPARC-III memory controller.
479 kernel will support. !! 272 Loading this driver allows exact mnemonic strings to be
>> 273 printed in the event of a memory error, so that the faulty DIMM
>> 274 on the motherboard can be matched to the error.
>> 275
>> 276 If in doubt, say Y, as this information can be very useful.
>> 277
>> 278 # Global things across all Sun machines.
>> 279 config GENERIC_LOCKBREAK
>> 280 bool
>> 281 default y
>> 282 depends on SPARC64 && SMP && PREEMPT
480 283
481 config NUMA 284 config NUMA
482 bool "NUMA Support" !! 285 bool "NUMA support"
483 select SMP !! 286 depends on SPARC64 && SMP
484 help <<
485 Say Y to compile the kernel with NUM <<
486 support. This option improves perfo <<
487 than one NUMA node; on single node s <<
488 to leave it disabled. <<
489 287
490 config NODES_SHIFT 288 config NODES_SHIFT
491 int !! 289 int "Maximum NUMA Nodes (as a power of 2)"
492 default "6" !! 290 range 4 5 if SPARC64
493 depends on NUMA !! 291 default "5"
>> 292 depends on NEED_MULTIPLE_NODES
>> 293 help
>> 294 Specify the maximum number of NUMA Nodes available on the target
>> 295 system. Increases memory reserved to accommodate various tables.
>> 296
>> 297 # Some NUMA nodes have memory ranges that span
>> 298 # other nodes. Even though a pfn is valid and
>> 299 # between a node's start and end pfns, it may not
>> 300 # reside on that node. See memmap_init_zone()
>> 301 # for details.
>> 302 config NODES_SPAN_OTHER_NODES
>> 303 def_bool y
>> 304 depends on NEED_MULTIPLE_NODES
>> 305
>> 306 config ARCH_SELECT_MEMORY_MODEL
>> 307 def_bool y if SPARC64
>> 308
>> 309 config ARCH_SPARSEMEM_ENABLE
>> 310 def_bool y if SPARC64
>> 311 select SPARSEMEM_VMEMMAP_ENABLE
>> 312
>> 313 config ARCH_SPARSEMEM_DEFAULT
>> 314 def_bool y if SPARC64
494 315
495 config ARCH_FORCE_MAX_ORDER !! 316 config FORCE_MAX_ZONEORDER
496 int "Maximum zone order" 317 int "Maximum zone order"
497 default "13" if PAGE_SIZE_64KB !! 318 default "13"
498 default "11" if PAGE_SIZE_16KB <<
499 default "10" <<
500 help 319 help
501 The kernel memory allocator divides 320 The kernel memory allocator divides physically contiguous memory
502 blocks into "zones", where each zone 321 blocks into "zones", where each zone is a power of two number of
503 pages. This option selects the larg 322 pages. This option selects the largest power of two that the kernel
504 keeps in the memory allocator. If y 323 keeps in the memory allocator. If you need to allocate very large
505 blocks of physically contiguous memo 324 blocks of physically contiguous memory, then you may need to
506 increase this value. 325 increase this value.
507 326
508 The page size is not necessarily 4KB !! 327 This config option is actually maximum order plus one. For example,
509 when choosing a value for this optio !! 328 a value of 13 means that the largest free memory block is 2^12 pages.
510 329
511 config ARCH_IOREMAP !! 330 if SPARC64
512 bool "Enable LoongArch DMW-based iorem !! 331 source "kernel/power/Kconfig"
>> 332 endif
>> 333
>> 334 config SCHED_SMT
>> 335 bool "SMT (Hyperthreading) scheduler support"
>> 336 depends on SPARC64 && SMP
>> 337 default y
513 help 338 help
514 We use generic TLB-based ioremap() b !! 339 SMT scheduler support improves the CPU scheduler's decision making
515 protection support. However, you can !! 340 when dealing with SPARC cpus at a cost of slightly increased overhead
516 ioremap() for better performance. !! 341 in some places. If unsure say N here.
517 342
518 config ARCH_WRITECOMBINE !! 343 config SCHED_MC
519 bool "Enable WriteCombine (WUC) for io !! 344 bool "Multi-core scheduler support"
>> 345 depends on SPARC64 && SMP
>> 346 default y
520 help 347 help
521 LoongArch maintains cache coherency !! 348 Multi-core scheduler support improves the CPU scheduler's decision
522 with LS7A chipsets the WUC attribute !! 349 making when dealing with multi-core CPU chips at a cost of slightly
523 is similar to WriteCombine) is out o !! 350 increased overhead in some places. If unsure say N here.
524 machanism for PCIe devices (this is <<
525 may be fixed in newer chipsets). <<
526 351
527 This means WUC can only used for wri !! 352 config CMDLINE_BOOL
528 this option is disabled by default, !! 353 bool "Default bootloader kernel arguments"
529 SUC for ioremap(). You can enable th !! 354 depends on SPARC64
530 to run on hardware without this bug. <<
531 355
532 You can override this setting via wr !! 356 config CMDLINE
>> 357 string "Initial kernel command string"
>> 358 depends on CMDLINE_BOOL
>> 359 default "console=ttyS0,9600 root=/dev/sda1"
>> 360 help
>> 361 Say Y here if you want to be able to pass default arguments to
>> 362 the kernel. This will be overridden by the bootloader, if you
>> 363 use one (such as SILO). This is most useful if you want to boot
>> 364 a kernel from TFTP, and want default options to be available
>> 365 with having them passed on the command line.
>> 366
>> 367 NOTE: This option WILL override the PROM bootargs setting!
>> 368
>> 369 config SUN_PM
>> 370 bool
>> 371 default y if SPARC32
>> 372 help
>> 373 Enable power management and CPU standby features on supported
>> 374 SPARC platforms.
>> 375
>> 376 config SPARC_LED
>> 377 tristate "Sun4m LED driver"
>> 378 depends on SPARC32
>> 379 help
>> 380 This driver toggles the front-panel LED on sun4m systems
>> 381 in a user-specifiable manner. Its state can be probed
>> 382 by reading /proc/led and its blinking mode can be changed
>> 383 via writes to /proc/led
>> 384
>> 385 config SERIAL_CONSOLE
>> 386 bool
>> 387 depends on SPARC32
>> 388 default y
>> 389 ---help---
>> 390 If you say Y here, it will be possible to use a serial port as the
>> 391 system console (the system console is the device which receives all
>> 392 kernel messages and warnings and which allows logins in single user
>> 393 mode). This could be useful if some terminal or printer is connected
>> 394 to that serial port.
>> 395
>> 396 Even if you say Y here, the currently visible virtual console
>> 397 (/dev/tty0) will still be used as the system console by default, but
>> 398 you can alter that using a kernel command line option such as
>> 399 "console=ttyS1". (Try "man bootparam" or see the documentation of
>> 400 your boot loader (silo) about how to pass options to the kernel at
>> 401 boot time.)
>> 402
>> 403 If you don't have a graphics card installed and you say Y here, the
>> 404 kernel will automatically use the first serial line, /dev/ttyS0, as
>> 405 system console.
>> 406
>> 407 If unsure, say N.
>> 408
>> 409 config SPARC_LEON
>> 410 bool "Sparc Leon processor family"
>> 411 depends on SPARC32
>> 412 select USB_EHCI_BIG_ENDIAN_MMIO
>> 413 select USB_EHCI_BIG_ENDIAN_DESC
>> 414 select USB_UHCI_BIG_ENDIAN_MMIO
>> 415 select USB_UHCI_BIG_ENDIAN_DESC
>> 416 ---help---
>> 417 If you say Y here if you are running on a SPARC-LEON processor.
>> 418 The LEON processor is a synthesizable VHDL model of the
>> 419 SPARC-v8 standard. LEON is part of the GRLIB collection of
>> 420 IP cores that are distributed under GPL. GRLIB can be downloaded
>> 421 from www.gaisler.com. You can download a sparc-linux cross-compilation
>> 422 toolchain at www.gaisler.com.
>> 423
>> 424 if SPARC_LEON
>> 425 menu "U-Boot options"
>> 426
>> 427 config UBOOT_LOAD_ADDR
>> 428 hex "uImage Load Address"
>> 429 default 0x40004000
>> 430 ---help---
>> 431 U-Boot kernel load address, the address in physical address space
>> 432 where u-boot will place the Linux kernel before booting it.
>> 433 This address is normally the base address of main memory + 0x4000.
>> 434
>> 435 config UBOOT_FLASH_ADDR
>> 436 hex "uImage.o Load Address"
>> 437 default 0x00080000
>> 438 ---help---
>> 439 Optional setting only affecting the uImage.o ELF-image used to
>> 440 download the uImage file to the target using a ELF-loader other than
>> 441 U-Boot. It may for example be used to download an uImage to FLASH with
>> 442 the GRMON utility before even starting u-boot.
>> 443
>> 444 config UBOOT_ENTRY_ADDR
>> 445 hex "uImage Entry Address"
>> 446 default 0xf0004000
>> 447 ---help---
>> 448 Do not change this unless you know what you're doing. This is
>> 449 hardcoded by the SPARC32 and LEON port.
533 450
534 config ARCH_STRICT_ALIGN !! 451 This is the virtual address u-boot jumps to when booting the Linux
535 bool "Enable -mstrict-align to prevent !! 452 Kernel.
536 default y <<
537 help <<
538 Not all LoongArch cores support h/w <<
539 -mstrict-align build parameter to pr <<
540 453
541 CPUs with h/w unaligned access suppo !! 454 endmenu
542 Loongson-2K2000/2K3000/3A5000/3C5000 !! 455 endif
543 456
544 CPUs without h/w unaligned access su !! 457 endmenu
545 Loongson-2K500/2K1000. <<
546 458
547 This option is enabled by default to !! 459 menu "Bus options (PCI etc.)"
548 on all LoongArch systems. But you ca !! 460 config SBUS
549 to run kernel only on systems with h !! 461 bool
550 order to optimise for performance. !! 462 default y
551 463
552 config CPU_HAS_FPU !! 464 config SBUSCHAR
553 bool 465 bool
554 default y 466 default y
555 467
556 config CPU_HAS_LSX !! 468 config SUN_LDOMS
557 bool "Support for the Loongson SIMD Ex !! 469 bool "Sun Logical Domains support"
558 depends on AS_HAS_LSX_EXTENSION !! 470 depends on SPARC64
559 help 471 help
560 Loongson SIMD Extension (LSX) introd !! 472 Say Y here is you want to support virtual devices via
561 and a set of SIMD instructions to op !! 473 Logical Domains.
562 is enabled the kernel will support a <<
563 vector register contexts. If you kno <<
564 running on CPUs which do not support <<
565 not be making use of it then you may <<
566 the size & complexity of your kernel <<
567 <<
568 If unsure, say Y. <<
569 474
570 config CPU_HAS_LASX !! 475 config PCI
571 bool "Support for the Loongson Advance !! 476 bool "Support for PCI and PS/2 keyboard/mouse"
572 depends on CPU_HAS_LSX <<
573 depends on AS_HAS_LASX_EXTENSION <<
574 help 477 help
575 Loongson Advanced SIMD Extension (LA !! 478 Find out whether your system includes a PCI bus. PCI is the name of
576 registers and a set of SIMD instruct !! 479 a bus system, i.e. the way the CPU talks to the other stuff inside
577 option is enabled the kernel will su !! 480 your box. If you say Y here, the kernel will include drivers and
578 vector register contexts. If you kno !! 481 infrastructure code to support PCI bus devices.
579 running on CPUs which do not support <<
580 not be making use of it then you may <<
581 the size & complexity of your kernel <<
582 482
583 If unsure, say Y. !! 483 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
>> 484 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
>> 485 All of these platforms are extremely obscure, so say N if unsure.
584 486
585 config CPU_HAS_LBT !! 487 config PCI_DOMAINS
586 bool "Support for the Loongson Binary !! 488 def_bool PCI if SPARC64
587 depends on AS_HAS_LBT_EXTENSION <<
588 help <<
589 Loongson Binary Translation (LBT) in <<
590 to SCR3), x86/ARM eflags (eflags) an <<
591 Enabling this option allows the kern <<
592 specific to LBT. <<
593 489
594 If you want to use this feature, suc !! 490 config PCI_SYSCALL
595 Translator (LAT), say Y. !! 491 def_bool PCI
596 492
597 config CPU_HAS_PREFETCH !! 493 config PCIC_PCI
598 bool 494 bool
>> 495 depends on PCI && SPARC32 && !SPARC_LEON
599 default y 496 default y
600 497
601 config ARCH_SUPPORTS_KEXEC !! 498 config LEON_PCI
602 def_bool y !! 499 bool
603 !! 500 depends on PCI && SPARC_LEON
604 config ARCH_SUPPORTS_CRASH_DUMP !! 501 default y
605 def_bool y <<
606 <<
607 config ARCH_SELECTS_CRASH_DUMP <<
608 def_bool y <<
609 depends on CRASH_DUMP <<
610 select RELOCATABLE <<
611 <<
612 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO <<
613 def_bool CRASH_RESERVE <<
614 502
615 config RELOCATABLE !! 503 config SPARC_GRPCI1
616 bool "Relocatable kernel" !! 504 bool "GRPCI Host Bridge Support"
617 select ARCH_HAS_RELR !! 505 depends on LEON_PCI
>> 506 default y
618 help 507 help
619 This builds the kernel as a Position !! 508 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
620 which retains all relocation metadat !! 509 PCI host controller is typically found in GRLIB SPARC32/LEON
621 the kernel binary at runtime to a di !! 510 systems. The driver has one property (all_pci_errors) controlled
622 its link address. !! 511 from the bootloader that makes the GRPCI to generate interrupts
>> 512 on detected PCI Parity and System errors.
623 513
624 config RANDOMIZE_BASE !! 514 config SPARC_GRPCI2
625 bool "Randomize the address of the ker !! 515 bool "GRPCI2 Host Bridge Support"
626 depends on RELOCATABLE !! 516 depends on LEON_PCI
>> 517 default y
627 help 518 help
628 Randomizes the physical and virtual !! 519 Say Y here to include the GRPCI2 Host Bridge Driver.
629 kernel image is loaded, as a securi <<
630 deters exploit attempts relying on <<
631 of kernel internals. <<
632 520
633 The kernel will be offset by up to !! 521 source "drivers/pci/Kconfig"
634 522
635 If unsure, say N. !! 523 source "drivers/pcmcia/Kconfig"
636 524
637 config RANDOMIZE_BASE_MAX_OFFSET !! 525 config SUN_OPENPROMFS
638 hex "Maximum KASLR offset" if EXPERT !! 526 tristate "Openprom tree appears in /proc/openprom"
639 depends on RANDOMIZE_BASE <<
640 range 0x0 0x10000000 <<
641 default "0x01000000" <<
642 help 527 help
643 When KASLR is active, this provides !! 528 If you say Y, the OpenPROM device tree will be available as a
644 be applied to the kernel image. It s !! 529 virtual file system, which you can mount to /proc/openprom by "mount
645 amount of physical RAM available in !! 530 -t openpromfs none /proc/openprom".
646 531
647 This is limited by the size of the l !! 532 To compile the /proc/openprom support as a module, choose M here: the
>> 533 module will be called openpromfs.
648 534
649 source "kernel/livepatch/Kconfig" !! 535 Only choose N if you know in advance that you will not need to modify
>> 536 OpenPROM settings on the running system.
650 537
651 config PARAVIRT !! 538 # Makefile helpers
652 bool "Enable paravirtualization code" !! 539 config SPARC64_PCI
653 depends on AS_HAS_LVZ_EXTENSION !! 540 bool
654 help !! 541 default y
655 This changes the kernel so it can mo !! 542 depends on SPARC64 && PCI
656 under a hypervisor, potentially impr <<
657 over full virtualization. However, <<
658 the kernel is theoretically slower a <<
659 <<
660 config PARAVIRT_TIME_ACCOUNTING <<
661 bool "Paravirtual steal time accountin <<
662 depends on PARAVIRT <<
663 help <<
664 Select this option to enable fine gr <<
665 accounting. Time spent executing oth <<
666 the current vCPU is discounted from <<
667 that, there can be a small performan <<
668 543
669 If in doubt, say N here. !! 544 config SPARC64_PCI_MSI
>> 545 bool
>> 546 default y
>> 547 depends on SPARC64_PCI && PCI_MSI
670 548
671 endmenu 549 endmenu
672 550
673 config ARCH_SELECT_MEMORY_MODEL !! 551 config COMPAT
674 def_bool y <<
675 <<
676 config ARCH_FLATMEM_ENABLE <<
677 def_bool y <<
678 depends on !NUMA <<
679 <<
680 config ARCH_SPARSEMEM_ENABLE <<
681 def_bool y <<
682 select SPARSEMEM_VMEMMAP_ENABLE <<
683 help <<
684 Say Y to support efficient handling <<
685 for architectures which are either N <<
686 or have huge holes in the physical a <<
687 See <file:Documentation/mm/numa.rst> <<
688 <<
689 config ARCH_MEMORY_PROBE <<
690 def_bool y <<
691 depends on MEMORY_HOTPLUG <<
692 <<
693 config MMU <<
694 bool 552 bool
>> 553 depends on SPARC64
695 default y 554 default y
>> 555 select COMPAT_BINFMT_ELF
>> 556 select HAVE_UID16
>> 557 select ARCH_WANT_OLD_COMPAT_IPC
>> 558 select COMPAT_OLD_SIGACTION
696 559
697 config ARCH_MMAP_RND_BITS_MIN !! 560 config SYSVIPC_COMPAT
698 default 12 !! 561 bool
699 !! 562 depends on COMPAT && SYSVIPC
700 config ARCH_MMAP_RND_BITS_MAX !! 563 default y
701 default 18 <<
702 <<
703 config ARCH_SUPPORTS_UPROBES <<
704 def_bool y <<
705 <<
706 config KASAN_SHADOW_OFFSET <<
707 hex <<
708 default 0x0 <<
709 depends on KASAN <<
710 <<
711 menu "Power management options" <<
712 <<
713 config ARCH_SUSPEND_POSSIBLE <<
714 def_bool y <<
715 <<
716 config ARCH_HIBERNATION_POSSIBLE <<
717 def_bool y <<
718 <<
719 source "kernel/power/Kconfig" <<
720 source "drivers/acpi/Kconfig" <<
721 source "drivers/cpufreq/Kconfig" <<
722 <<
723 endmenu <<
724 564
725 source "arch/loongarch/kvm/Kconfig" !! 565 source "drivers/sbus/char/Kconfig"
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