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_DMA_API_DEBUG 72 select ARCH_USE_QUEUED_SPINLOCKS !! 29 select HAVE_ARCH_JUMP_LABEL if SPARC64 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 30 select GENERIC_IRQ_SHOW 95 select GENERIC_LIB_ASHLDI3 !! 31 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 32 select GENERIC_PCI_IOMAP 102 select GENERIC_SCHED_CLOCK !! 33 select HAVE_NMI_WATCHDOG if SPARC64 >> 34 select HAVE_CBPF_JIT if SPARC32 >> 35 select HAVE_EBPF_JIT if SPARC64 >> 36 select HAVE_DEBUG_BUGVERBOSE 103 select GENERIC_SMP_IDLE_THREAD 37 select GENERIC_SMP_IDLE_THREAD 104 select GENERIC_TIME_VSYSCALL !! 38 select GENERIC_CLOCKEVENTS 105 select GENERIC_VDSO_TIME_NS !! 39 select GENERIC_STRNCPY_FROM_USER 106 select GPIOLIB !! 40 select GENERIC_STRNLEN_USER 107 select HAS_IOPORT !! 41 select MODULES_USE_ELF_RELA 108 select HAVE_ARCH_AUDITSYSCALL !! 42 select ODD_RT_SIGACTION 109 select HAVE_ARCH_JUMP_LABEL !! 43 select OLD_SIGSUSPEND 110 select HAVE_ARCH_JUMP_LABEL_RELATIVE !! 44 select ARCH_HAS_SG_CHAIN 111 select HAVE_ARCH_KASAN !! 45 select CPU_NO_EFFICIENT_FFS 112 select HAVE_ARCH_KFENCE !! 46 select LOCKDEP_SMALL if LOCKDEP 113 select HAVE_ARCH_KGDB if PERF_EVENTS !! 47 114 select HAVE_ARCH_MMAP_RND_BITS if MMU !! 48 config SPARC32 115 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS !! 49 def_bool !64BIT 116 select HAVE_ARCH_SECCOMP !! 50 select GENERIC_ATOMIC64 117 select HAVE_ARCH_SECCOMP_FILTER !! 51 select CLZ_TAB 118 select HAVE_ARCH_TRACEHOOK !! 52 select HAVE_UID16 >> 53 select OLD_SIGACTION >> 54 >> 55 config SPARC64 >> 56 def_bool 64BIT >> 57 select HAVE_FUNCTION_TRACER >> 58 select HAVE_FUNCTION_GRAPH_TRACER >> 59 select HAVE_KRETPROBES >> 60 select HAVE_KPROBES >> 61 select HAVE_RCU_TABLE_FREE if SMP >> 62 select HAVE_MEMBLOCK >> 63 select HAVE_MEMBLOCK_NODE_MAP 119 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 64 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 65 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 66 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 67 select HAVE_SYSCALL_TRACEPOINTS 170 select HAVE_TIF_NOHZ !! 68 select HAVE_CONTEXT_TRACKING 171 select HAVE_VIRT_CPU_ACCOUNTING_GEN if !! 69 select HAVE_DEBUG_KMEMLEAK 172 select IRQ_FORCED_THREADING << 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 70 select SPARSE_IRQ 190 select SYSCTL_ARCH_UNALIGN_ALLOW !! 71 select RTC_DRV_CMOS 191 select SYSCTL_ARCH_UNALIGN_NO_WARN !! 72 select RTC_DRV_BQ4802 192 select SYSCTL_EXCEPTION_TRACE !! 73 select RTC_DRV_SUN4V 193 select SWIOTLB !! 74 select RTC_DRV_STARFIRE 194 select TRACE_IRQFLAGS_SUPPORT !! 75 select HAVE_PERF_EVENTS 195 select USE_PERCPU_NUMA_NODE_ID !! 76 select PERF_USE_VMALLOC 196 select USER_STACKTRACE_SUPPORT !! 77 select IRQ_PREFLOW_FASTEOI 197 select VDSO_GETRANDOM !! 78 select ARCH_HAVE_NMI_SAFE_CMPXCHG 198 select ZONE_DMA32 !! 79 select HAVE_C_RECORDMCOUNT 199 !! 80 select NO_BOOTMEM 200 config 32BIT !! 81 select HAVE_ARCH_AUDITSYSCALL 201 bool !! 82 select ARCH_SUPPORTS_ATOMIC_RMW 202 !! 83 select HAVE_NMI 203 config 64BIT !! 84 select HAVE_REGS_AND_STACK_ACCESS_API 204 def_bool y !! 85 select ARCH_USE_QUEUED_RWLOCKS 205 !! 86 select ARCH_USE_QUEUED_SPINLOCKS 206 config GENERIC_BUG !! 87 select GENERIC_TIME_VSYSCALL 207 def_bool y !! 88 select ARCH_CLOCKSOURCE_DATA 208 depends on BUG << 209 << 210 config GENERIC_BUG_RELATIVE_POINTERS << 211 def_bool y << 212 depends on GENERIC_BUG << 213 89 214 config GENERIC_CALIBRATE_DELAY !! 90 config ARCH_DEFCONFIG 215 def_bool y !! 91 string >> 92 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 >> 93 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 216 94 217 config GENERIC_CSUM !! 95 config ARCH_PROC_KCORE_TEXT 218 def_bool y 96 def_bool y 219 97 220 config GENERIC_HWEIGHT !! 98 config CPU_BIG_ENDIAN 221 def_bool y 99 def_bool y 222 100 223 config L1_CACHE_SHIFT !! 101 config ARCH_ATU 224 int << 225 default "6" << 226 << 227 config LOCKDEP_SUPPORT << 228 bool 102 bool 229 default y !! 103 default y if SPARC64 230 104 231 config STACKTRACE_SUPPORT !! 105 config ARCH_DMA_ADDR_T_64BIT 232 bool 106 bool 233 default y !! 107 default y if ARCH_ATU 234 << 235 # MACH_LOONGSON32 and MACH_LOONGSON64 are deli << 236 # MIPS Loongson code, to preserve Loongson-spe << 237 # are shared between architectures, and specif << 238 config MACH_LOONGSON32 << 239 def_bool 32BIT << 240 << 241 config MACH_LOONGSON64 << 242 def_bool 64BIT << 243 << 244 config FIX_EARLYCON_MEM << 245 def_bool y << 246 108 247 config PGTABLE_2LEVEL !! 109 config IOMMU_HELPER 248 bool 110 bool >> 111 default y if SPARC64 249 112 250 config PGTABLE_3LEVEL !! 113 config STACKTRACE_SUPPORT 251 bool 114 bool >> 115 default y if SPARC64 252 116 253 config PGTABLE_4LEVEL !! 117 config LOCKDEP_SUPPORT 254 bool 118 bool >> 119 default y if SPARC64 255 120 256 config PGTABLE_LEVELS !! 121 config ARCH_HIBERNATION_POSSIBLE 257 int !! 122 def_bool y if SPARC64 258 default 2 if PGTABLE_2LEVEL << 259 default 3 if PGTABLE_3LEVEL << 260 default 4 if PGTABLE_4LEVEL << 261 123 262 config SCHED_OMIT_FRAME_POINTER !! 124 config AUDIT_ARCH 263 bool 125 bool 264 default y 126 default y 265 127 266 config AS_HAS_EXPLICIT_RELOCS !! 128 config HAVE_SETUP_PER_CPU_AREA 267 def_bool $(as-instr,x:pcalau12i \$t0$( !! 129 def_bool y if SPARC64 268 130 269 config AS_HAS_FCSR_CLASS !! 131 config NEED_PER_CPU_EMBED_FIRST_CHUNK 270 def_bool $(as-instr,movfcsr2gr \$t0$(c !! 132 def_bool y if SPARC64 271 133 272 config AS_HAS_THIN_ADD_SUB !! 134 config NEED_PER_CPU_PAGE_FIRST_CHUNK 273 def_bool $(cc-option,-Wa$(comma)-mthin !! 135 def_bool y if SPARC64 274 136 275 config AS_HAS_LSX_EXTENSION !! 137 config MMU 276 def_bool $(as-instr,vld \$vr0$(comma)\ !! 138 bool 277 !! 139 default y 278 config AS_HAS_LASX_EXTENSION << 279 def_bool $(as-instr,xvld \$xr0$(comma) << 280 140 281 config AS_HAS_LBT_EXTENSION !! 141 config HIGHMEM 282 def_bool $(as-instr,movscr2gr \$a0$(co !! 142 bool >> 143 default y if SPARC32 283 144 284 config AS_HAS_LVZ_EXTENSION !! 145 config ZONE_DMA 285 def_bool $(as-instr,hvcl 0) !! 146 bool >> 147 default y if SPARC32 286 148 287 menu "Kernel type and options" !! 149 config NEED_DMA_MAP_STATE >> 150 def_bool y 288 151 289 source "kernel/Kconfig.hz" !! 152 config NEED_SG_DMA_LENGTH >> 153 def_bool y 290 154 291 choice !! 155 config GENERIC_ISA_DMA 292 prompt "Page Table Layout" !! 156 bool 293 default 16KB_2LEVEL if 32BIT !! 157 default y if SPARC32 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 << 299 158 300 config 4KB_3LEVEL !! 159 config ARCH_SUPPORTS_DEBUG_PAGEALLOC 301 bool "4KB with 3 levels" !! 160 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 << 307 161 308 config 4KB_4LEVEL !! 162 config PGTABLE_LEVELS 309 bool "4KB with 4 levels" !! 163 default 4 if 64BIT 310 select HAVE_PAGE_SIZE_4KB !! 164 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 << 315 165 316 config 16KB_2LEVEL !! 166 config ARCH_SUPPORTS_UPROBES 317 bool "16KB with 2 levels" !! 167 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 << 323 168 324 config 16KB_3LEVEL !! 169 source "init/Kconfig" 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 << 331 170 332 config 64KB_2LEVEL !! 171 source "kernel/Kconfig.freezer" 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 << 339 172 340 config 64KB_3LEVEL !! 173 menu "Processor type and features" 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 << 347 174 348 endchoice !! 175 config SMP >> 176 bool "Symmetric multi-processing support" >> 177 ---help--- >> 178 This enables support for systems with more than one CPU. If you have >> 179 a system with only one CPU, say N. If you have a system with more >> 180 than one CPU, say Y. 349 181 350 config CMDLINE !! 182 If you say N here, the kernel will run on uni- and multiprocessor 351 string "Built-in kernel command line" !! 183 machines, but will use only one CPU of a multiprocessor machine. If 352 help !! 184 you say Y here, the kernel will run on many, but not all, 353 For most platforms, the arguments fo !! 185 uniprocessor machines. On a uniprocessor machine, the kernel 354 are provided at run-time, during boo !! 186 will run faster if you say N here. 355 where either no arguments are being << 356 arguments are insufficient or even i << 357 187 358 When that occurs, it is possible to !! 188 People using multiprocessor machines who say Y here should also say 359 line here and choose how the kernel !! 189 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power >> 190 Management" code will be disabled if you say Y here. 360 191 361 choice !! 192 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO 362 prompt "Kernel command line type" !! 193 available at <http://www.tldp.org/docs.html#howto>. 363 default CMDLINE_BOOTLOADER << 364 help << 365 Choose how the kernel will handle th << 366 line. << 367 194 368 config CMDLINE_BOOTLOADER !! 195 If you don't know what to do here, say N. 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 << 374 196 375 config CMDLINE_EXTEND !! 197 config NR_CPUS 376 bool "Use built-in to extend bootloade !! 198 int "Maximum number of CPUs" 377 help !! 199 depends on SMP 378 The command-line arguments provided !! 200 range 2 32 if SPARC32 379 appended to the built-in command lin !! 201 range 2 4096 if SPARC64 380 cases where the provided arguments a !! 202 default 32 if SPARC32 381 you don't want to or cannot modify t !! 203 default 4096 if SPARC64 382 204 383 config CMDLINE_FORCE !! 205 source kernel/Kconfig.hz 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. << 390 206 391 endchoice !! 207 config RWSEM_GENERIC_SPINLOCK >> 208 bool >> 209 default y if SPARC32 392 210 393 config BUILTIN_DTB !! 211 config RWSEM_XCHGADD_ALGORITHM 394 bool "Enable built-in dtb in kernel" !! 212 bool 395 depends on OF !! 213 default y if SPARC64 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 << 400 214 401 Built-in DTBs are generic enough and !! 215 config GENERIC_HWEIGHT >> 216 bool >> 217 default y 402 218 403 config BUILTIN_DTB_NAME !! 219 config GENERIC_CALIBRATE_DELAY 404 string "Source file for built-in dtb" !! 220 bool 405 depends on BUILTIN_DTB !! 221 default y 406 help << 407 Base name (without suffix, relative << 408 for the DTS file that will be used t << 409 the kernel. << 410 222 411 config DMI !! 223 config ARCH_MAY_HAVE_PC_FDC 412 bool "Enable DMI scanning" !! 224 bool 413 select DMI_SCAN_MACHINE_NON_EFI_FALLBA << 414 default y 225 default y 415 help << 416 This enables SMBIOS/DMI feature for << 417 DMI to identify machine quirks. << 418 226 419 config EFI !! 227 config EMULATED_CMPXCHG 420 bool "EFI runtime service support" !! 228 bool 421 select UCS2_STRING !! 229 default y if SPARC32 422 select EFI_RUNTIME_WRAPPERS << 423 help 230 help 424 This enables the kernel to use EFI r !! 231 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 425 available (such as the EFI variable !! 232 is emulated, and therefore it is not completely atomic. 426 233 427 config EFI_STUB !! 234 # Makefile helpers 428 bool "EFI boot stub support" !! 235 config SPARC32_SMP >> 236 bool 429 default y 237 default y 430 depends on EFI !! 238 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 << 435 239 436 config SCHED_SMT !! 240 config SPARC64_SMP 437 bool "SMT scheduler support" !! 241 bool 438 depends on SMP << 439 default y 242 default y 440 help !! 243 depends on SPARC64 && SMP 441 Improves scheduler's performance whe << 442 threads in one physical core. << 443 244 444 config SMP !! 245 config EARLYFB 445 bool "Multi-Processing support" !! 246 bool "Support for early boot text console" >> 247 default y >> 248 depends on SPARC64 446 help 249 help 447 This enables support for systems wit !! 250 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. << 456 251 457 See also the SMP-HOWTO available at !! 252 config SECCOMP >> 253 bool "Enable seccomp to safely compute untrusted bytecode" >> 254 depends on SPARC64 && PROC_FS >> 255 default y >> 256 help >> 257 This kernel feature is useful for number crunching applications >> 258 that may need to compute untrusted bytecode during their >> 259 execution. By using pipes or other transports made available to >> 260 the process as file descriptors supporting the read/write >> 261 syscalls, it's possible to isolate those applications in >> 262 their own address space using seccomp. Once seccomp is >> 263 enabled via /proc/<pid>/seccomp, it cannot be disabled >> 264 and the task is only allowed to execute a few safe syscalls >> 265 defined by each seccomp mode. 458 266 459 If you don't know what to do here, s !! 267 If unsure, say Y. Only embedded should say N here. 460 268 461 config HOTPLUG_CPU 269 config HOTPLUG_CPU 462 bool "Support for hot-pluggable CPUs" 270 bool "Support for hot-pluggable CPUs" 463 depends on SMP !! 271 depends on SPARC64 && SMP 464 select GENERIC_IRQ_MIGRATION << 465 help 272 help 466 Say Y here to allow turning CPUs off !! 273 Say Y here to experiment with turning CPUs off and on. CPUs 467 controlled through /sys/devices/syst !! 274 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 275 Say N if you want to disable CPU hotplug. 471 276 472 config NR_CPUS !! 277 if SPARC64 473 int "Maximum number of CPUs (2-256)" !! 278 source "drivers/cpufreq/Kconfig" 474 range 2 256 !! 279 endif 475 depends on SMP !! 280 476 default "64" !! 281 config US3_MC >> 282 tristate "UltraSPARC-III Memory Controller driver" >> 283 depends on SPARC64 >> 284 default y 477 help 285 help 478 This allows you to specify the maxim !! 286 This adds a driver for the UltraSPARC-III memory controller. 479 kernel will support. !! 287 Loading this driver allows exact mnemonic strings to be >> 288 printed in the event of a memory error, so that the faulty DIMM >> 289 on the motherboard can be matched to the error. >> 290 >> 291 If in doubt, say Y, as this information can be very useful. >> 292 >> 293 # Global things across all Sun machines. >> 294 config GENERIC_LOCKBREAK >> 295 bool >> 296 default y >> 297 depends on SPARC64 && SMP && PREEMPT 480 298 481 config NUMA 299 config NUMA 482 bool "NUMA Support" !! 300 bool "NUMA support" 483 select SMP !! 301 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. << 489 302 490 config NODES_SHIFT 303 config NODES_SHIFT 491 int !! 304 int "Maximum NUMA Nodes (as a power of 2)" 492 default "6" !! 305 range 4 5 if SPARC64 493 depends on NUMA !! 306 default "5" >> 307 depends on NEED_MULTIPLE_NODES >> 308 help >> 309 Specify the maximum number of NUMA Nodes available on the target >> 310 system. Increases memory reserved to accommodate various tables. >> 311 >> 312 # Some NUMA nodes have memory ranges that span >> 313 # other nodes. Even though a pfn is valid and >> 314 # between a node's start and end pfns, it may not >> 315 # reside on that node. See memmap_init_zone() >> 316 # for details. >> 317 config NODES_SPAN_OTHER_NODES >> 318 def_bool y >> 319 depends on NEED_MULTIPLE_NODES >> 320 >> 321 config ARCH_SELECT_MEMORY_MODEL >> 322 def_bool y if SPARC64 494 323 495 config ARCH_FORCE_MAX_ORDER !! 324 config ARCH_SPARSEMEM_ENABLE >> 325 def_bool y if SPARC64 >> 326 select SPARSEMEM_VMEMMAP_ENABLE >> 327 >> 328 config ARCH_SPARSEMEM_DEFAULT >> 329 def_bool y if SPARC64 >> 330 >> 331 config FORCE_MAX_ZONEORDER 496 int "Maximum zone order" 332 int "Maximum zone order" 497 default "13" if PAGE_SIZE_64KB !! 333 default "13" 498 default "11" if PAGE_SIZE_16KB << 499 default "10" << 500 help 334 help 501 The kernel memory allocator divides 335 The kernel memory allocator divides physically contiguous memory 502 blocks into "zones", where each zone 336 blocks into "zones", where each zone is a power of two number of 503 pages. This option selects the larg 337 pages. This option selects the largest power of two that the kernel 504 keeps in the memory allocator. If y 338 keeps in the memory allocator. If you need to allocate very large 505 blocks of physically contiguous memo 339 blocks of physically contiguous memory, then you may need to 506 increase this value. 340 increase this value. 507 341 508 The page size is not necessarily 4KB !! 342 This config option is actually maximum order plus one. For example, 509 when choosing a value for this optio !! 343 a value of 13 means that the largest free memory block is 2^12 pages. >> 344 >> 345 source "mm/Kconfig" 510 346 511 config ARCH_IOREMAP !! 347 if SPARC64 512 bool "Enable LoongArch DMW-based iorem !! 348 source "kernel/power/Kconfig" >> 349 endif >> 350 >> 351 config SCHED_SMT >> 352 bool "SMT (Hyperthreading) scheduler support" >> 353 depends on SPARC64 && SMP >> 354 default y 513 help 355 help 514 We use generic TLB-based ioremap() b !! 356 SMT scheduler support improves the CPU scheduler's decision making 515 protection support. However, you can !! 357 when dealing with SPARC cpus at a cost of slightly increased overhead 516 ioremap() for better performance. !! 358 in some places. If unsure say N here. 517 359 518 config ARCH_WRITECOMBINE !! 360 config SCHED_MC 519 bool "Enable WriteCombine (WUC) for io !! 361 bool "Multi-core scheduler support" >> 362 depends on SPARC64 && SMP >> 363 default y 520 help 364 help 521 LoongArch maintains cache coherency !! 365 Multi-core scheduler support improves the CPU scheduler's decision 522 with LS7A chipsets the WUC attribute !! 366 making when dealing with multi-core CPU chips at a cost of slightly 523 is similar to WriteCombine) is out o !! 367 increased overhead in some places. If unsure say N here. 524 machanism for PCIe devices (this is << 525 may be fixed in newer chipsets). << 526 368 527 This means WUC can only used for wri !! 369 source "kernel/Kconfig.preempt" 528 this option is disabled by default, << 529 SUC for ioremap(). You can enable th << 530 to run on hardware without this bug. << 531 370 532 You can override this setting via wr !! 371 config CMDLINE_BOOL >> 372 bool "Default bootloader kernel arguments" >> 373 depends on SPARC64 533 374 534 config ARCH_STRICT_ALIGN !! 375 config CMDLINE 535 bool "Enable -mstrict-align to prevent !! 376 string "Initial kernel command string" 536 default y !! 377 depends on CMDLINE_BOOL 537 help !! 378 default "console=ttyS0,9600 root=/dev/sda1" 538 Not all LoongArch cores support h/w !! 379 help 539 -mstrict-align build parameter to pr !! 380 Say Y here if you want to be able to pass default arguments to >> 381 the kernel. This will be overridden by the bootloader, if you >> 382 use one (such as SILO). This is most useful if you want to boot >> 383 a kernel from TFTP, and want default options to be available >> 384 with having them passed on the command line. >> 385 >> 386 NOTE: This option WILL override the PROM bootargs setting! >> 387 >> 388 config SUN_PM >> 389 bool >> 390 default y if SPARC32 >> 391 help >> 392 Enable power management and CPU standby features on supported >> 393 SPARC platforms. >> 394 >> 395 config SPARC_LED >> 396 tristate "Sun4m LED driver" >> 397 depends on SPARC32 >> 398 help >> 399 This driver toggles the front-panel LED on sun4m systems >> 400 in a user-specifiable manner. Its state can be probed >> 401 by reading /proc/led and its blinking mode can be changed >> 402 via writes to /proc/led >> 403 >> 404 config SERIAL_CONSOLE >> 405 bool >> 406 depends on SPARC32 >> 407 default y >> 408 ---help--- >> 409 If you say Y here, it will be possible to use a serial port as the >> 410 system console (the system console is the device which receives all >> 411 kernel messages and warnings and which allows logins in single user >> 412 mode). This could be useful if some terminal or printer is connected >> 413 to that serial port. >> 414 >> 415 Even if you say Y here, the currently visible virtual console >> 416 (/dev/tty0) will still be used as the system console by default, but >> 417 you can alter that using a kernel command line option such as >> 418 "console=ttyS1". (Try "man bootparam" or see the documentation of >> 419 your boot loader (silo) about how to pass options to the kernel at >> 420 boot time.) >> 421 >> 422 If you don't have a graphics card installed and you say Y here, the >> 423 kernel will automatically use the first serial line, /dev/ttyS0, as >> 424 system console. >> 425 >> 426 If unsure, say N. >> 427 >> 428 config SPARC_LEON >> 429 bool "Sparc Leon processor family" >> 430 depends on SPARC32 >> 431 select USB_EHCI_BIG_ENDIAN_MMIO >> 432 select USB_EHCI_BIG_ENDIAN_DESC >> 433 select USB_UHCI_BIG_ENDIAN_MMIO >> 434 select USB_UHCI_BIG_ENDIAN_DESC >> 435 ---help--- >> 436 If you say Y here if you are running on a SPARC-LEON processor. >> 437 The LEON processor is a synthesizable VHDL model of the >> 438 SPARC-v8 standard. LEON is part of the GRLIB collection of >> 439 IP cores that are distributed under GPL. GRLIB can be downloaded >> 440 from www.gaisler.com. You can download a sparc-linux cross-compilation >> 441 toolchain at www.gaisler.com. >> 442 >> 443 if SPARC_LEON >> 444 menu "U-Boot options" >> 445 >> 446 config UBOOT_LOAD_ADDR >> 447 hex "uImage Load Address" >> 448 default 0x40004000 >> 449 ---help--- >> 450 U-Boot kernel load address, the address in physical address space >> 451 where u-boot will place the Linux kernel before booting it. >> 452 This address is normally the base address of main memory + 0x4000. >> 453 >> 454 config UBOOT_FLASH_ADDR >> 455 hex "uImage.o Load Address" >> 456 default 0x00080000 >> 457 ---help--- >> 458 Optional setting only affecting the uImage.o ELF-image used to >> 459 download the uImage file to the target using a ELF-loader other than >> 460 U-Boot. It may for example be used to download an uImage to FLASH with >> 461 the GRMON utility before even starting u-boot. >> 462 >> 463 config UBOOT_ENTRY_ADDR >> 464 hex "uImage Entry Address" >> 465 default 0xf0004000 >> 466 ---help--- >> 467 Do not change this unless you know what you're doing. This is >> 468 hardcoded by the SPARC32 and LEON port. 540 469 541 CPUs with h/w unaligned access suppo !! 470 This is the virtual address u-boot jumps to when booting the Linux 542 Loongson-2K2000/2K3000/3A5000/3C5000 !! 471 Kernel. 543 472 544 CPUs without h/w unaligned access su !! 473 endmenu 545 Loongson-2K500/2K1000. !! 474 endif 546 475 547 This option is enabled by default to !! 476 endmenu 548 on all LoongArch systems. But you ca << 549 to run kernel only on systems with h << 550 order to optimise for performance. << 551 477 552 config CPU_HAS_FPU !! 478 menu "Bus options (PCI etc.)" >> 479 config SBUS 553 bool 480 bool 554 default y 481 default y 555 482 556 config CPU_HAS_LSX !! 483 config SBUSCHAR 557 bool "Support for the Loongson SIMD Ex !! 484 bool 558 depends on AS_HAS_LSX_EXTENSION !! 485 default y 559 help << 560 Loongson SIMD Extension (LSX) introd << 561 and a set of SIMD instructions to op << 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 << 567 486 568 If unsure, say Y. !! 487 config SUN_LDOMS >> 488 bool "Sun Logical Domains support" >> 489 depends on SPARC64 >> 490 help >> 491 Say Y here is you want to support virtual devices via >> 492 Logical Domains. 569 493 570 config CPU_HAS_LASX !! 494 config PCI 571 bool "Support for the Loongson Advance !! 495 bool "Support for PCI and PS/2 keyboard/mouse" 572 depends on CPU_HAS_LSX << 573 depends on AS_HAS_LASX_EXTENSION << 574 help 496 help 575 Loongson Advanced SIMD Extension (LA !! 497 Find out whether your system includes a PCI bus. PCI is the name of 576 registers and a set of SIMD instruct !! 498 a bus system, i.e. the way the CPU talks to the other stuff inside 577 option is enabled the kernel will su !! 499 your box. If you say Y here, the kernel will include drivers and 578 vector register contexts. If you kno !! 500 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 << 582 501 583 If unsure, say Y. !! 502 CONFIG_PCI is needed for all JavaStation's (including MrCoffee), >> 503 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC. >> 504 All of these platforms are extremely obscure, so say N if unsure. 584 505 585 config CPU_HAS_LBT !! 506 config PCI_DOMAINS 586 bool "Support for the Loongson Binary !! 507 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. << 593 508 594 If you want to use this feature, suc !! 509 config PCI_SYSCALL 595 Translator (LAT), say Y. !! 510 def_bool PCI 596 511 597 config CPU_HAS_PREFETCH !! 512 config PCIC_PCI 598 bool 513 bool >> 514 depends on PCI && SPARC32 && !SPARC_LEON 599 default y 515 default y 600 516 601 config ARCH_SUPPORTS_KEXEC !! 517 config LEON_PCI 602 def_bool y !! 518 bool 603 !! 519 depends on PCI && SPARC_LEON 604 config ARCH_SUPPORTS_CRASH_DUMP !! 520 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 << 614 521 615 config RELOCATABLE !! 522 config SPARC_GRPCI1 616 bool "Relocatable kernel" !! 523 bool "GRPCI Host Bridge Support" 617 select ARCH_HAS_RELR !! 524 depends on LEON_PCI >> 525 default y 618 help 526 help 619 This builds the kernel as a Position !! 527 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 620 which retains all relocation metadat !! 528 PCI host controller is typically found in GRLIB SPARC32/LEON 621 the kernel binary at runtime to a di !! 529 systems. The driver has one property (all_pci_errors) controlled 622 its link address. !! 530 from the bootloader that makes the GRPCI to generate interrupts >> 531 on detected PCI Parity and System errors. 623 532 624 config RANDOMIZE_BASE !! 533 config SPARC_GRPCI2 625 bool "Randomize the address of the ker !! 534 bool "GRPCI2 Host Bridge Support" 626 depends on RELOCATABLE !! 535 depends on LEON_PCI >> 536 default y 627 help 537 help 628 Randomizes the physical and virtual !! 538 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. << 632 539 633 The kernel will be offset by up to !! 540 source "drivers/pci/Kconfig" 634 541 635 If unsure, say N. !! 542 source "drivers/pcmcia/Kconfig" 636 543 637 config RANDOMIZE_BASE_MAX_OFFSET !! 544 config SUN_OPENPROMFS 638 hex "Maximum KASLR offset" if EXPERT !! 545 tristate "Openprom tree appears in /proc/openprom" 639 depends on RANDOMIZE_BASE << 640 range 0x0 0x10000000 << 641 default "0x01000000" << 642 help 546 help 643 When KASLR is active, this provides !! 547 If you say Y, the OpenPROM device tree will be available as a 644 be applied to the kernel image. It s !! 548 virtual file system, which you can mount to /proc/openprom by "mount 645 amount of physical RAM available in !! 549 -t openpromfs none /proc/openprom". 646 550 647 This is limited by the size of the l !! 551 To compile the /proc/openprom support as a module, choose M here: the >> 552 module will be called openpromfs. 648 553 649 source "kernel/livepatch/Kconfig" !! 554 Only choose N if you know in advance that you will not need to modify >> 555 OpenPROM settings on the running system. 650 556 651 config PARAVIRT !! 557 # Makefile helpers 652 bool "Enable paravirtualization code" !! 558 config SPARC64_PCI 653 depends on AS_HAS_LVZ_EXTENSION !! 559 bool 654 help !! 560 default y 655 This changes the kernel so it can mo !! 561 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 << 668 562 669 If in doubt, say N here. !! 563 config SPARC64_PCI_MSI >> 564 bool >> 565 default y >> 566 depends on SPARC64_PCI && PCI_MSI 670 567 671 endmenu 568 endmenu 672 569 673 config ARCH_SELECT_MEMORY_MODEL !! 570 menu "Executable file formats" 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> << 688 571 689 config ARCH_MEMORY_PROBE !! 572 source "fs/Kconfig.binfmt" 690 def_bool y << 691 depends on MEMORY_HOTPLUG << 692 573 693 config MMU !! 574 config COMPAT 694 bool 575 bool >> 576 depends on SPARC64 695 default y 577 default y >> 578 select COMPAT_BINFMT_ELF >> 579 select HAVE_UID16 >> 580 select ARCH_WANT_OLD_COMPAT_IPC >> 581 select COMPAT_OLD_SIGACTION 696 582 697 config ARCH_MMAP_RND_BITS_MIN !! 583 config SYSVIPC_COMPAT 698 default 12 !! 584 bool >> 585 depends on COMPAT && SYSVIPC >> 586 default y 699 587 700 config ARCH_MMAP_RND_BITS_MAX !! 588 endmenu 701 default 18 << 702 589 703 config ARCH_SUPPORTS_UPROBES !! 590 source "net/Kconfig" 704 def_bool y << 705 591 706 config KASAN_SHADOW_OFFSET !! 592 source "drivers/Kconfig" 707 hex << 708 default 0x0 << 709 depends on KASAN << 710 593 711 menu "Power management options" !! 594 source "drivers/sbus/char/Kconfig" 712 595 713 config ARCH_SUSPEND_POSSIBLE !! 596 source "fs/Kconfig" 714 def_bool y << 715 597 716 config ARCH_HIBERNATION_POSSIBLE !! 598 source "arch/sparc/Kconfig.debug" 717 def_bool y << 718 599 719 source "kernel/power/Kconfig" !! 600 source "security/Kconfig" 720 source "drivers/acpi/Kconfig" << 721 source "drivers/cpufreq/Kconfig" << 722 601 723 endmenu !! 602 source "crypto/Kconfig" 724 603 725 source "arch/loongarch/kvm/Kconfig" !! 604 source "lib/Kconfig"
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