1 # SPDX-License-Identifier: GPL-2.0 !! 1 # SPDX-License-Identifier: GPL-2.0-only 2 config LOONGARCH !! 2 config 64BIT >> 3 bool "64-bit kernel" if "$(ARCH)" = "sparc" >> 4 default "$(ARCH)" = "sparc64" >> 5 help >> 6 SPARC is a family of RISC microprocessors designed and marketed by >> 7 Sun Microsystems, incorporated. They are very widely found in Sun >> 8 workstations and clones. >> 9 >> 10 Say yes to build a 64-bit kernel - formerly known as sparc64 >> 11 Say no to build a 32-bit kernel - formerly known as sparc >> 12 >> 13 config SPARC 3 bool 14 bool 4 default y 15 default y 5 select ACPI !! 16 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 17 select ARCH_MIGHT_HAVE_PC_SERIO 60 select ARCH_SPARSEMEM_ENABLE !! 18 select DMA_OPS 61 select ARCH_STACKWALK !! 19 select OF 62 select ARCH_SUPPORTS_ACPI !! 20 select OF_PROMTREE 63 select ARCH_SUPPORTS_ATOMIC_RMW !! 21 select HAVE_ASM_MODVERSIONS 64 select ARCH_SUPPORTS_HUGETLBFS !! 22 select HAVE_IDE 65 select ARCH_SUPPORTS_INT128 if CC_HAS_ !! 23 select HAVE_ARCH_KGDB if !SMP || SPARC64 66 select ARCH_SUPPORTS_LTO_CLANG !! 24 select HAVE_ARCH_TRACEHOOK 67 select ARCH_SUPPORTS_LTO_CLANG_THIN !! 25 select HAVE_ARCH_SECCOMP if SPARC64 68 select ARCH_SUPPORTS_NUMA_BALANCING !! 26 select HAVE_EXIT_THREAD 69 select ARCH_USE_BUILTIN_BSWAP !! 27 select HAVE_PCI 70 select ARCH_USE_CMPXCHG_LOCKREF !! 28 select SYSCTL_EXCEPTION_TRACE 71 select ARCH_USE_QUEUED_RWLOCKS !! 29 select RTC_CLASS 72 select ARCH_USE_QUEUED_SPINLOCKS !! 30 select RTC_DRV_M48T59 73 select ARCH_WANT_DEFAULT_BPF_JIT !! 31 select RTC_SYSTOHC 74 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_ !! 32 select HAVE_ARCH_JUMP_LABEL if SPARC64 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 33 select GENERIC_IRQ_SHOW 95 select GENERIC_LIB_ASHLDI3 !! 34 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 35 select GENERIC_PCI_IOMAP 102 select GENERIC_SCHED_CLOCK !! 36 select HAVE_NMI_WATCHDOG if SPARC64 >> 37 select HAVE_CBPF_JIT if SPARC32 >> 38 select HAVE_EBPF_JIT if SPARC64 >> 39 select HAVE_DEBUG_BUGVERBOSE 103 select GENERIC_SMP_IDLE_THREAD 40 select GENERIC_SMP_IDLE_THREAD 104 select GENERIC_TIME_VSYSCALL !! 41 select GENERIC_STRNCPY_FROM_USER 105 select GENERIC_VDSO_TIME_NS !! 42 select GENERIC_STRNLEN_USER 106 select GPIOLIB !! 43 select MODULES_USE_ELF_RELA 107 select HAS_IOPORT !! 44 select PCI_SYSCALL if PCI 108 select HAVE_ARCH_AUDITSYSCALL !! 45 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 109 select HAVE_ARCH_JUMP_LABEL !! 46 select ODD_RT_SIGACTION 110 select HAVE_ARCH_JUMP_LABEL_RELATIVE !! 47 select OLD_SIGSUSPEND 111 select HAVE_ARCH_KASAN !! 48 select CPU_NO_EFFICIENT_FFS 112 select HAVE_ARCH_KFENCE !! 49 select LOCKDEP_SMALL if LOCKDEP 113 select HAVE_ARCH_KGDB if PERF_EVENTS !! 50 select NEED_DMA_MAP_STATE 114 select HAVE_ARCH_MMAP_RND_BITS if MMU !! 51 select NEED_SG_DMA_LENGTH 115 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS !! 52 select SET_FS 116 select HAVE_ARCH_SECCOMP !! 53 117 select HAVE_ARCH_SECCOMP_FILTER !! 54 config SPARC32 118 select HAVE_ARCH_TRACEHOOK !! 55 def_bool !64BIT >> 56 select ARCH_32BIT_OFF_T >> 57 select ARCH_HAS_SYNC_DMA_FOR_CPU >> 58 select GENERIC_ATOMIC64 >> 59 select CLZ_TAB >> 60 select HAVE_UID16 >> 61 select OLD_SIGACTION >> 62 >> 63 config SPARC64 >> 64 def_bool 64BIT >> 65 select HAVE_FUNCTION_TRACER >> 66 select HAVE_FUNCTION_GRAPH_TRACER >> 67 select HAVE_KRETPROBES >> 68 select HAVE_KPROBES >> 69 select MMU_GATHER_RCU_TABLE_FREE if SMP 119 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 70 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 71 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 72 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 73 select HAVE_SYSCALL_TRACEPOINTS >> 74 select HAVE_CONTEXT_TRACKING 170 select HAVE_TIF_NOHZ 75 select HAVE_TIF_NOHZ 171 select HAVE_VIRT_CPU_ACCOUNTING_GEN if !! 76 select HAVE_DEBUG_KMEMLEAK 172 select IRQ_FORCED_THREADING !! 77 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 78 select SPARSE_IRQ 190 select SYSCTL_ARCH_UNALIGN_ALLOW !! 79 select RTC_DRV_CMOS 191 select SYSCTL_ARCH_UNALIGN_NO_WARN !! 80 select RTC_DRV_BQ4802 192 select SYSCTL_EXCEPTION_TRACE !! 81 select RTC_DRV_SUN4V 193 select SWIOTLB !! 82 select RTC_DRV_STARFIRE 194 select TRACE_IRQFLAGS_SUPPORT !! 83 select HAVE_PERF_EVENTS 195 select USE_PERCPU_NUMA_NODE_ID !! 84 select PERF_USE_VMALLOC 196 select USER_STACKTRACE_SUPPORT !! 85 select ARCH_HAVE_NMI_SAFE_CMPXCHG 197 select VDSO_GETRANDOM !! 86 select HAVE_C_RECORDMCOUNT 198 select ZONE_DMA32 !! 87 select HAVE_ARCH_AUDITSYSCALL 199 !! 88 select ARCH_SUPPORTS_ATOMIC_RMW 200 config 32BIT !! 89 select ARCH_SUPPORTS_DEBUG_PAGEALLOC 201 bool !! 90 select HAVE_NMI 202 !! 91 select HAVE_REGS_AND_STACK_ACCESS_API 203 config 64BIT !! 92 select ARCH_USE_QUEUED_RWLOCKS 204 def_bool y !! 93 select ARCH_USE_QUEUED_SPINLOCKS 205 !! 94 select GENERIC_TIME_VSYSCALL 206 config GENERIC_BUG !! 95 select ARCH_CLOCKSOURCE_DATA 207 def_bool y !! 96 select ARCH_HAS_PTE_SPECIAL 208 depends on BUG !! 97 select PCI_DOMAINS if PCI 209 !! 98 select ARCH_HAS_GIGANTIC_PAGE 210 config GENERIC_BUG_RELATIVE_POINTERS !! 99 select HAVE_SOFTIRQ_ON_OWN_STACK 211 def_bool y << 212 depends on GENERIC_BUG << 213 100 214 config GENERIC_CALIBRATE_DELAY !! 101 config ARCH_PROC_KCORE_TEXT 215 def_bool y 102 def_bool y 216 103 217 config GENERIC_CSUM !! 104 config CPU_BIG_ENDIAN 218 def_bool y 105 def_bool y 219 106 220 config GENERIC_HWEIGHT !! 107 config ARCH_ATU 221 def_bool y !! 108 bool >> 109 default y if SPARC64 222 110 223 config L1_CACHE_SHIFT !! 111 config STACKTRACE_SUPPORT 224 int !! 112 bool 225 default "6" !! 113 default y if SPARC64 226 114 227 config LOCKDEP_SUPPORT 115 config LOCKDEP_SUPPORT 228 bool 116 bool 229 default y !! 117 default y if SPARC64 230 118 231 config STACKTRACE_SUPPORT !! 119 config ARCH_HIBERNATION_POSSIBLE >> 120 def_bool y if SPARC64 >> 121 >> 122 config AUDIT_ARCH 232 bool 123 bool 233 default y 124 default y 234 125 235 # MACH_LOONGSON32 and MACH_LOONGSON64 are deli !! 126 config HAVE_SETUP_PER_CPU_AREA 236 # MIPS Loongson code, to preserve Loongson-spe !! 127 def_bool y if SPARC64 237 # are shared between architectures, and specif << 238 config MACH_LOONGSON32 << 239 def_bool 32BIT << 240 128 241 config MACH_LOONGSON64 !! 129 config NEED_PER_CPU_EMBED_FIRST_CHUNK 242 def_bool 64BIT !! 130 def_bool y if SPARC64 243 131 244 config FIX_EARLYCON_MEM !! 132 config NEED_PER_CPU_PAGE_FIRST_CHUNK 245 def_bool y !! 133 def_bool y if SPARC64 246 134 247 config PGTABLE_2LEVEL !! 135 config MMU 248 bool 136 bool >> 137 default y 249 138 250 config PGTABLE_3LEVEL !! 139 config HIGHMEM 251 bool 140 bool >> 141 default y if SPARC32 >> 142 select KMAP_LOCAL 252 143 253 config PGTABLE_4LEVEL !! 144 config ZONE_DMA 254 bool 145 bool >> 146 default y if SPARC32 255 147 256 config PGTABLE_LEVELS !! 148 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 149 bool 264 default y !! 150 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" << 288 151 289 source "kernel/Kconfig.hz" !! 152 config PGTABLE_LEVELS >> 153 default 4 if 64BIT >> 154 default 3 290 155 291 choice !! 156 config ARCH_SUPPORTS_UPROBES 292 prompt "Page Table Layout" !! 157 def_bool y if SPARC64 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 << 300 config 4KB_3LEVEL << 301 bool "4KB with 3 levels" << 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 << 308 config 4KB_4LEVEL << 309 bool "4KB with 4 levels" << 310 select HAVE_PAGE_SIZE_4KB << 311 select PGTABLE_4LEVEL << 312 help << 313 This option selects 4KB page size wi << 314 support a maximum of 48 bits of appl << 315 << 316 config 16KB_2LEVEL << 317 bool "16KB with 2 levels" << 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 << 324 config 16KB_3LEVEL << 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 << 332 config 64KB_2LEVEL << 333 bool "64KB with 2 levels" << 334 select HAVE_PAGE_SIZE_64KB << 335 select PGTABLE_2LEVEL << 336 help << 337 This option selects 64KB page size w << 338 support a maximum of 42 bits of appl << 339 << 340 config 64KB_3LEVEL << 341 bool "64KB with 3 levels" << 342 select HAVE_PAGE_SIZE_64KB << 343 select PGTABLE_3LEVEL << 344 help << 345 This option selects 64KB page size w << 346 support a maximum of 55 bits of appl << 347 158 348 endchoice !! 159 menu "Processor type and features" 349 160 350 config CMDLINE !! 161 config SMP 351 string "Built-in kernel command line" !! 162 bool "Symmetric multi-processing support" 352 help 163 help 353 For most platforms, the arguments fo !! 164 This enables support for systems with more than one CPU. If you have 354 are provided at run-time, during boo !! 165 a system with only one CPU, say N. If you have a system with more 355 where either no arguments are being !! 166 than one CPU, say Y. 356 arguments are insufficient or even i << 357 << 358 When that occurs, it is possible to << 359 line here and choose how the kernel << 360 167 361 choice !! 168 If you say N here, the kernel will run on uni- and multiprocessor 362 prompt "Kernel command line type" !! 169 machines, but will use only one CPU of a multiprocessor machine. If 363 default CMDLINE_BOOTLOADER !! 170 you say Y here, the kernel will run on many, but not all, 364 help !! 171 uniprocessor machines. On a uniprocessor machine, the kernel 365 Choose how the kernel will handle th !! 172 will run faster if you say N here. 366 line. << 367 173 368 config CMDLINE_BOOTLOADER !! 174 People using multiprocessor machines who say Y here should also say 369 bool "Use bootloader kernel arguments !! 175 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 370 help !! 176 Management" code will be disabled if you say Y here. 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 << 374 177 375 config CMDLINE_EXTEND !! 178 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 376 bool "Use built-in to extend bootloade !! 179 available at <https://www.tldp.org/docs.html#howto>. 377 help << 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 << 382 180 383 config CMDLINE_FORCE !! 181 If you don't know what to do here, say N. 384 bool "Always use the built-in kernel c << 385 help << 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. << 390 182 391 endchoice !! 183 config NR_CPUS >> 184 int "Maximum number of CPUs" >> 185 depends on SMP >> 186 range 2 32 if SPARC32 >> 187 range 2 4096 if SPARC64 >> 188 default 32 if SPARC32 >> 189 default 4096 if SPARC64 392 190 393 config BUILTIN_DTB !! 191 source "kernel/Kconfig.hz" 394 bool "Enable built-in dtb in kernel" << 395 depends on OF << 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 << 400 192 401 Built-in DTBs are generic enough and !! 193 config GENERIC_HWEIGHT >> 194 bool >> 195 default y 402 196 403 config BUILTIN_DTB_NAME !! 197 config GENERIC_CALIBRATE_DELAY 404 string "Source file for built-in dtb" !! 198 bool 405 depends on BUILTIN_DTB !! 199 default y 406 help << 407 Base name (without suffix, relative << 408 for the DTS file that will be used t << 409 the kernel. << 410 200 411 config DMI !! 201 config ARCH_MAY_HAVE_PC_FDC 412 bool "Enable DMI scanning" !! 202 bool 413 select DMI_SCAN_MACHINE_NON_EFI_FALLBA << 414 default y 203 default y 415 help << 416 This enables SMBIOS/DMI feature for << 417 DMI to identify machine quirks. << 418 204 419 config EFI !! 205 config EMULATED_CMPXCHG 420 bool "EFI runtime service support" !! 206 bool 421 select UCS2_STRING !! 207 default y if SPARC32 422 select EFI_RUNTIME_WRAPPERS << 423 help 208 help 424 This enables the kernel to use EFI r !! 209 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 425 available (such as the EFI variable !! 210 is emulated, and therefore it is not completely atomic. 426 211 427 config EFI_STUB !! 212 # Makefile helpers 428 bool "EFI boot stub support" !! 213 config SPARC32_SMP >> 214 bool 429 default y 215 default y 430 depends on EFI !! 216 depends on SPARC32 && SMP 431 select EFI_GENERIC_STUB << 432 help << 433 This kernel feature allows the kerne << 434 EFI firmware without the use of a bo << 435 217 436 config SCHED_SMT !! 218 config SPARC64_SMP 437 bool "SMT scheduler support" !! 219 bool 438 depends on SMP << 439 default y 220 default y 440 help !! 221 depends on SPARC64 && SMP 441 Improves scheduler's performance whe << 442 threads in one physical core. << 443 222 444 config SMP !! 223 config EARLYFB 445 bool "Multi-Processing support" !! 224 bool "Support for early boot text console" >> 225 default y >> 226 depends on SPARC64 446 help 227 help 447 This enables support for systems wit !! 228 Say Y here to enable a faster early framebuffer boot console. 448 a system with only one CPU, say N. I << 449 than one CPU, say Y. << 450 << 451 If you say N here, the kernel will r << 452 machines, but will use only one CPU << 453 you say Y here, the kernel will run << 454 uniprocessor machines. On a uniproce << 455 will run faster if you say N here. << 456 << 457 See also the SMP-HOWTO available at << 458 << 459 If you don't know what to do here, s << 460 229 461 config HOTPLUG_CPU 230 config HOTPLUG_CPU 462 bool "Support for hot-pluggable CPUs" 231 bool "Support for hot-pluggable CPUs" 463 depends on SMP !! 232 depends on SPARC64 && SMP 464 select GENERIC_IRQ_MIGRATION << 465 help 233 help 466 Say Y here to allow turning CPUs off !! 234 Say Y here to experiment with turning CPUs off and on. CPUs 467 controlled through /sys/devices/syst !! 235 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 236 Say N if you want to disable CPU hotplug. 471 237 472 config NR_CPUS !! 238 if SPARC64 473 int "Maximum number of CPUs (2-256)" !! 239 source "drivers/cpufreq/Kconfig" 474 range 2 256 !! 240 endif 475 depends on SMP !! 241 476 default "64" !! 242 config US3_MC >> 243 tristate "UltraSPARC-III Memory Controller driver" >> 244 depends on SPARC64 >> 245 default y 477 help 246 help 478 This allows you to specify the maxim !! 247 This adds a driver for the UltraSPARC-III memory controller. 479 kernel will support. !! 248 Loading this driver allows exact mnemonic strings to be >> 249 printed in the event of a memory error, so that the faulty DIMM >> 250 on the motherboard can be matched to the error. >> 251 >> 252 If in doubt, say Y, as this information can be very useful. >> 253 >> 254 # Global things across all Sun machines. >> 255 config GENERIC_LOCKBREAK >> 256 bool >> 257 default y >> 258 depends on SPARC64 && SMP && PREEMPTION 480 259 481 config NUMA 260 config NUMA 482 bool "NUMA Support" !! 261 bool "NUMA support" 483 select SMP !! 262 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. << 489 263 490 config NODES_SHIFT 264 config NODES_SHIFT 491 int !! 265 int "Maximum NUMA Nodes (as a power of 2)" 492 default "6" !! 266 range 4 5 if SPARC64 493 depends on NUMA !! 267 default "5" >> 268 depends on NEED_MULTIPLE_NODES >> 269 help >> 270 Specify the maximum number of NUMA Nodes available on the target >> 271 system. Increases memory reserved to accommodate various tables. >> 272 >> 273 config ARCH_SPARSEMEM_ENABLE >> 274 def_bool y if SPARC64 >> 275 select SPARSEMEM_VMEMMAP_ENABLE 494 276 495 config ARCH_FORCE_MAX_ORDER !! 277 config ARCH_SPARSEMEM_DEFAULT >> 278 def_bool y if SPARC64 >> 279 >> 280 config FORCE_MAX_ZONEORDER 496 int "Maximum zone order" 281 int "Maximum zone order" 497 default "13" if PAGE_SIZE_64KB !! 282 default "13" 498 default "11" if PAGE_SIZE_16KB << 499 default "10" << 500 help 283 help 501 The kernel memory allocator divides 284 The kernel memory allocator divides physically contiguous memory 502 blocks into "zones", where each zone 285 blocks into "zones", where each zone is a power of two number of 503 pages. This option selects the larg 286 pages. This option selects the largest power of two that the kernel 504 keeps in the memory allocator. If y 287 keeps in the memory allocator. If you need to allocate very large 505 blocks of physically contiguous memo 288 blocks of physically contiguous memory, then you may need to 506 increase this value. 289 increase this value. 507 290 508 The page size is not necessarily 4KB !! 291 This config option is actually maximum order plus one. For example, 509 when choosing a value for this optio !! 292 a value of 13 means that the largest free memory block is 2^12 pages. 510 << 511 config ARCH_IOREMAP << 512 bool "Enable LoongArch DMW-based iorem << 513 help << 514 We use generic TLB-based ioremap() b << 515 protection support. However, you can << 516 ioremap() for better performance. << 517 293 518 config ARCH_WRITECOMBINE !! 294 if SPARC64 519 bool "Enable WriteCombine (WUC) for io !! 295 source "kernel/power/Kconfig" 520 help !! 296 endif 521 LoongArch maintains cache coherency << 522 with LS7A chipsets the WUC attribute << 523 is similar to WriteCombine) is out o << 524 machanism for PCIe devices (this is << 525 may be fixed in newer chipsets). << 526 << 527 This means WUC can only used for wri << 528 this option is disabled by default, << 529 SUC for ioremap(). You can enable th << 530 to run on hardware without this bug. << 531 << 532 You can override this setting via wr << 533 297 534 config ARCH_STRICT_ALIGN !! 298 config SCHED_SMT 535 bool "Enable -mstrict-align to prevent !! 299 bool "SMT (Hyperthreading) scheduler support" >> 300 depends on SPARC64 && SMP 536 default y 301 default y 537 help 302 help 538 Not all LoongArch cores support h/w !! 303 SMT scheduler support improves the CPU scheduler's decision making 539 -mstrict-align build parameter to pr !! 304 when dealing with SPARC cpus at a cost of slightly increased overhead 540 !! 305 in some places. If unsure say N here. 541 CPUs with h/w unaligned access suppo << 542 Loongson-2K2000/2K3000/3A5000/3C5000 << 543 << 544 CPUs without h/w unaligned access su << 545 Loongson-2K500/2K1000. << 546 306 547 This option is enabled by default to !! 307 config SCHED_MC 548 on all LoongArch systems. But you ca !! 308 bool "Multi-core scheduler support" 549 to run kernel only on systems with h !! 309 depends on SPARC64 && SMP 550 order to optimise for performance. << 551 << 552 config CPU_HAS_FPU << 553 bool << 554 default y 310 default y 555 << 556 config CPU_HAS_LSX << 557 bool "Support for the Loongson SIMD Ex << 558 depends on AS_HAS_LSX_EXTENSION << 559 help 311 help 560 Loongson SIMD Extension (LSX) introd !! 312 Multi-core scheduler support improves the CPU scheduler's decision 561 and a set of SIMD instructions to op !! 313 making when dealing with multi-core CPU chips at a cost of slightly 562 is enabled the kernel will support a !! 314 increased overhead in some places. If unsure say N here. 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 << 567 315 568 If unsure, say Y. !! 316 config CMDLINE_BOOL >> 317 bool "Default bootloader kernel arguments" >> 318 depends on SPARC64 569 319 570 config CPU_HAS_LASX !! 320 config CMDLINE 571 bool "Support for the Loongson Advance !! 321 string "Initial kernel command string" 572 depends on CPU_HAS_LSX !! 322 depends on CMDLINE_BOOL 573 depends on AS_HAS_LASX_EXTENSION !! 323 default "console=ttyS0,9600 root=/dev/sda1" >> 324 help >> 325 Say Y here if you want to be able to pass default arguments to >> 326 the kernel. This will be overridden by the bootloader, if you >> 327 use one (such as SILO). This is most useful if you want to boot >> 328 a kernel from TFTP, and want default options to be available >> 329 with having them passed on the command line. >> 330 >> 331 NOTE: This option WILL override the PROM bootargs setting! >> 332 >> 333 config SUN_PM >> 334 bool >> 335 default y if SPARC32 >> 336 help >> 337 Enable power management and CPU standby features on supported >> 338 SPARC platforms. >> 339 >> 340 config SPARC_LED >> 341 tristate "Sun4m LED driver" >> 342 depends on SPARC32 >> 343 help >> 344 This driver toggles the front-panel LED on sun4m systems >> 345 in a user-specifiable manner. Its state can be probed >> 346 by reading /proc/led and its blinking mode can be changed >> 347 via writes to /proc/led >> 348 >> 349 config SERIAL_CONSOLE >> 350 bool >> 351 depends on SPARC32 >> 352 default y >> 353 help >> 354 If you say Y here, it will be possible to use a serial port as the >> 355 system console (the system console is the device which receives all >> 356 kernel messages and warnings and which allows logins in single user >> 357 mode). This could be useful if some terminal or printer is connected >> 358 to that serial port. >> 359 >> 360 Even if you say Y here, the currently visible virtual console >> 361 (/dev/tty0) will still be used as the system console by default, but >> 362 you can alter that using a kernel command line option such as >> 363 "console=ttyS1". (Try "man bootparam" or see the documentation of >> 364 your boot loader (silo) about how to pass options to the kernel at >> 365 boot time.) >> 366 >> 367 If you don't have a graphics card installed and you say Y here, the >> 368 kernel will automatically use the first serial line, /dev/ttyS0, as >> 369 system console. >> 370 >> 371 If unsure, say N. >> 372 >> 373 config SPARC_LEON >> 374 bool "Sparc Leon processor family" >> 375 depends on SPARC32 >> 376 select USB_EHCI_BIG_ENDIAN_MMIO >> 377 select USB_EHCI_BIG_ENDIAN_DESC >> 378 select USB_UHCI_BIG_ENDIAN_MMIO >> 379 select USB_UHCI_BIG_ENDIAN_DESC >> 380 help >> 381 If you say Y here if you are running on a SPARC-LEON processor. >> 382 The LEON processor is a synthesizable VHDL model of the >> 383 SPARC-v8 standard. LEON is part of the GRLIB collection of >> 384 IP cores that are distributed under GPL. GRLIB can be downloaded >> 385 from www.gaisler.com. You can download a sparc-linux cross-compilation >> 386 toolchain at www.gaisler.com. >> 387 >> 388 if SPARC_LEON >> 389 menu "U-Boot options" >> 390 >> 391 config UBOOT_LOAD_ADDR >> 392 hex "uImage Load Address" >> 393 default 0x40004000 >> 394 help >> 395 U-Boot kernel load address, the address in physical address space >> 396 where u-boot will place the Linux kernel before booting it. >> 397 This address is normally the base address of main memory + 0x4000. >> 398 >> 399 config UBOOT_FLASH_ADDR >> 400 hex "uImage.o Load Address" >> 401 default 0x00080000 >> 402 help >> 403 Optional setting only affecting the uImage.o ELF-image used to >> 404 download the uImage file to the target using a ELF-loader other than >> 405 U-Boot. It may for example be used to download an uImage to FLASH with >> 406 the GRMON utility before even starting u-boot. >> 407 >> 408 config UBOOT_ENTRY_ADDR >> 409 hex "uImage Entry Address" >> 410 default 0xf0004000 574 help 411 help 575 Loongson Advanced SIMD Extension (LA !! 412 Do not change this unless you know what you're doing. This is 576 registers and a set of SIMD instruct !! 413 hardcoded by the SPARC32 and LEON port. 577 option is enabled the kernel will su << 578 vector register contexts. If you kno << 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 << 582 414 583 If unsure, say Y. !! 415 This is the virtual address u-boot jumps to when booting the Linux >> 416 Kernel. 584 417 585 config CPU_HAS_LBT !! 418 endmenu 586 bool "Support for the Loongson Binary !! 419 endif 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. << 593 420 594 If you want to use this feature, suc !! 421 endmenu 595 Translator (LAT), say Y. << 596 422 597 config CPU_HAS_PREFETCH !! 423 menu "Bus options (PCI etc.)" >> 424 config SBUS 598 bool 425 bool 599 default y 426 default y 600 427 601 config ARCH_SUPPORTS_KEXEC !! 428 config SBUSCHAR 602 def_bool y !! 429 bool 603 !! 430 default y 604 config ARCH_SUPPORTS_CRASH_DUMP << 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 << 615 config RELOCATABLE << 616 bool "Relocatable kernel" << 617 select ARCH_HAS_RELR << 618 help << 619 This builds the kernel as a Position << 620 which retains all relocation metadat << 621 the kernel binary at runtime to a di << 622 its link address. << 623 431 624 config RANDOMIZE_BASE !! 432 config SUN_LDOMS 625 bool "Randomize the address of the ker !! 433 bool "Sun Logical Domains support" 626 depends on RELOCATABLE !! 434 depends on SPARC64 627 help 435 help 628 Randomizes the physical and virtual !! 436 Say Y here is you want to support virtual devices via 629 kernel image is loaded, as a securi !! 437 Logical Domains. 630 deters exploit attempts relying on << 631 of kernel internals. << 632 438 633 The kernel will be offset by up to !! 439 config PCIC_PCI >> 440 bool >> 441 depends on PCI && SPARC32 && !SPARC_LEON >> 442 default y 634 443 635 If unsure, say N. !! 444 config LEON_PCI >> 445 bool >> 446 depends on PCI && SPARC_LEON >> 447 default y 636 448 637 config RANDOMIZE_BASE_MAX_OFFSET !! 449 config SPARC_GRPCI1 638 hex "Maximum KASLR offset" if EXPERT !! 450 bool "GRPCI Host Bridge Support" 639 depends on RANDOMIZE_BASE !! 451 depends on LEON_PCI 640 range 0x0 0x10000000 !! 452 default y 641 default "0x01000000" << 642 help 453 help 643 When KASLR is active, this provides !! 454 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 644 be applied to the kernel image. It s !! 455 PCI host controller is typically found in GRLIB SPARC32/LEON 645 amount of physical RAM available in !! 456 systems. The driver has one property (all_pci_errors) controlled 646 !! 457 from the bootloader that makes the GRPCI to generate interrupts 647 This is limited by the size of the l !! 458 on detected PCI Parity and System errors. 648 << 649 source "kernel/livepatch/Kconfig" << 650 459 651 config PARAVIRT !! 460 config SPARC_GRPCI2 652 bool "Enable paravirtualization code" !! 461 bool "GRPCI2 Host Bridge Support" 653 depends on AS_HAS_LVZ_EXTENSION !! 462 depends on LEON_PCI >> 463 default y 654 help 464 help 655 This changes the kernel so it can mo !! 465 Say Y here to include the GRPCI2 Host Bridge Driver. 656 under a hypervisor, potentially impr << 657 over full virtualization. However, << 658 the kernel is theoretically slower a << 659 466 660 config PARAVIRT_TIME_ACCOUNTING !! 467 config SUN_OPENPROMFS 661 bool "Paravirtual steal time accountin !! 468 tristate "Openprom tree appears in /proc/openprom" 662 depends on PARAVIRT << 663 help 469 help 664 Select this option to enable fine gr !! 470 If you say Y, the OpenPROM device tree will be available as a 665 accounting. Time spent executing oth !! 471 virtual file system, which you can mount to /proc/openprom by "mount 666 the current vCPU is discounted from !! 472 -t openpromfs none /proc/openprom". 667 that, there can be a small performan << 668 << 669 If in doubt, say N here. << 670 473 671 endmenu !! 474 To compile the /proc/openprom support as a module, choose M here: the >> 475 module will be called openpromfs. 672 476 673 config ARCH_SELECT_MEMORY_MODEL !! 477 Only choose N if you know in advance that you will not need to modify 674 def_bool y !! 478 OpenPROM settings on the running system. 675 479 676 config ARCH_FLATMEM_ENABLE !! 480 # Makefile helpers 677 def_bool y !! 481 config SPARC64_PCI 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 482 bool 695 default y 483 default y >> 484 depends on SPARC64 && PCI 696 485 697 config ARCH_MMAP_RND_BITS_MIN !! 486 config SPARC64_PCI_MSI 698 default 12 !! 487 bool 699 !! 488 default y 700 config ARCH_MMAP_RND_BITS_MAX !! 489 depends on SPARC64_PCI && PCI_MSI 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 << 715 490 716 config ARCH_HIBERNATION_POSSIBLE !! 491 endmenu 717 def_bool y << 718 492 719 source "kernel/power/Kconfig" !! 493 config COMPAT 720 source "drivers/acpi/Kconfig" !! 494 bool 721 source "drivers/cpufreq/Kconfig" !! 495 depends on SPARC64 >> 496 default y >> 497 select HAVE_UID16 >> 498 select ARCH_WANT_OLD_COMPAT_IPC >> 499 select COMPAT_OLD_SIGACTION 722 500 723 endmenu !! 501 config SYSVIPC_COMPAT >> 502 bool >> 503 depends on COMPAT && SYSVIPC >> 504 default y 724 505 725 source "arch/loongarch/kvm/Kconfig" !! 506 source "drivers/sbus/char/Kconfig"
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