tjh.dev / kernel
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kernel / arch / parisc / Kconfig
at v6.8-rc5 379 lines 9.8 kB view raw
1# SPDX-License-Identifier: GPL-2.0 2config PARISC 3 def_bool y 4 select ALTERNATE_USER_ADDRESS_SPACE 5 select ARCH_32BIT_OFF_T if !64BIT 6 select ARCH_MIGHT_HAVE_PC_PARPORT 7 select HAVE_FUNCTION_TRACER 8 select HAVE_FUNCTION_GRAPH_TRACER 9 select HAVE_SYSCALL_TRACEPOINTS 10 select ARCH_WANT_FRAME_POINTERS 11 select ARCH_HAS_DMA_ALLOC if PA11 12 select ARCH_HAS_ELF_RANDOMIZE 13 select ARCH_HAS_STRICT_KERNEL_RWX 14 select ARCH_HAS_STRICT_MODULE_RWX 15 select ARCH_HAS_UBSAN_SANITIZE_ALL 16 select ARCH_HAS_PTE_SPECIAL 17 select ARCH_NO_SG_CHAIN 18 select ARCH_SUPPORTS_HUGETLBFS if PA20 19 select ARCH_SUPPORTS_MEMORY_FAILURE 20 select ARCH_STACKWALK 21 select ARCH_HAS_DEBUG_VM_PGTABLE 22 select HAVE_RELIABLE_STACKTRACE 23 select DMA_OPS 24 select RTC_CLASS 25 select RTC_DRV_GENERIC 26 select INIT_ALL_POSSIBLE 27 select BUG 28 select HAVE_KERNEL_UNCOMPRESSED 29 select HAVE_PCI 30 select HAVE_PERF_EVENTS 31 select HAVE_KERNEL_BZIP2 32 select HAVE_KERNEL_GZIP 33 select HAVE_KERNEL_LZ4 34 select HAVE_KERNEL_LZMA 35 select HAVE_KERNEL_LZO 36 select HAVE_KERNEL_XZ 37 select GENERIC_ATOMIC64 if !64BIT 38 select GENERIC_IRQ_PROBE 39 select GENERIC_PCI_IOMAP 40 select GENERIC_IOREMAP 41 select ARCH_HAVE_NMI_SAFE_CMPXCHG 42 select GENERIC_SMP_IDLE_THREAD 43 select GENERIC_ARCH_TOPOLOGY if SMP 44 select GENERIC_CPU_DEVICES if !SMP 45 select GENERIC_LIB_DEVMEM_IS_ALLOWED 46 select SYSCTL_ARCH_UNALIGN_ALLOW 47 select SYSCTL_EXCEPTION_TRACE 48 select HAVE_MOD_ARCH_SPECIFIC 49 select MODULES_USE_ELF_RELA 50 select CLONE_BACKWARDS 51 select TTY # Needed for pdc_cons.c 52 select HAS_IOPORT if PCI || EISA 53 select HAVE_DEBUG_STACKOVERFLOW 54 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT 55 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT 56 select HAVE_ARCH_MMAP_RND_BITS 57 select HAVE_ARCH_AUDITSYSCALL 58 select HAVE_ARCH_HASH 59 select HAVE_ARCH_JUMP_LABEL 60 select HAVE_ARCH_JUMP_LABEL_RELATIVE 61 select HAVE_ARCH_KFENCE 62 select HAVE_ARCH_SECCOMP_FILTER 63 select HAVE_ARCH_TRACEHOOK 64 select HAVE_EBPF_JIT 65 select ARCH_WANT_DEFAULT_BPF_JIT 66 select HAVE_REGS_AND_STACK_ACCESS_API 67 select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU 68 select GENERIC_SCHED_CLOCK 69 select GENERIC_IRQ_MIGRATION if SMP 70 select HAVE_UNSTABLE_SCHED_CLOCK if SMP 71 select LEGACY_TIMER_TICK 72 select CPU_NO_EFFICIENT_FFS 73 select THREAD_INFO_IN_TASK 74 select NEED_DMA_MAP_STATE 75 select NEED_SG_DMA_LENGTH 76 select HAVE_ARCH_KGDB 77 select HAVE_KPROBES 78 select HAVE_KRETPROBES 79 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1) 80 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE 81 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE 82 select HAVE_KPROBES_ON_FTRACE 83 select HAVE_DYNAMIC_FTRACE_WITH_REGS 84 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS 85 select TRACE_IRQFLAGS_SUPPORT 86 select HAVE_FUNCTION_DESCRIPTORS if 64BIT 87 88 help 89 The PA-RISC microprocessor is designed by Hewlett-Packard and used 90 in many of their workstations & servers (HP9000 700 and 800 series, 91 and later HP3000 series). The PA-RISC Linux project home page is 92 at <https://parisc.wiki.kernel.org>. 93 94config CPU_BIG_ENDIAN 95 def_bool y 96 97config MMU 98 def_bool y 99 100config STACK_GROWSUP 101 def_bool y 102 103config GENERIC_LOCKBREAK 104 bool 105 default y 106 depends on SMP && PREEMPTION 107 108config ARCH_HAS_ILOG2_U32 109 bool 110 default n 111 112config ARCH_HAS_ILOG2_U64 113 bool 114 default n 115 116config GENERIC_BUG 117 def_bool y 118 depends on BUG 119 select GENERIC_BUG_RELATIVE_POINTERS if 64BIT 120 121config GENERIC_BUG_RELATIVE_POINTERS 122 bool 123 124config GENERIC_HWEIGHT 125 bool 126 default y 127 128config GENERIC_CALIBRATE_DELAY 129 bool 130 default y 131 132config TIME_LOW_RES 133 bool 134 depends on SMP 135 default y 136 137config ARCH_MMAP_RND_BITS_MIN 138 default 18 if 64BIT 139 default 8 140 141config ARCH_MMAP_RND_COMPAT_BITS_MIN 142 default 8 143 144config ARCH_MMAP_RND_BITS_MAX 145 default 18 if 64BIT 146 default 13 147 148config ARCH_MMAP_RND_COMPAT_BITS_MAX 149 default 13 150 151# unless you want to implement ACPI on PA-RISC ... ;-) 152config PM 153 bool 154 155config STACKTRACE_SUPPORT 156 def_bool y 157 158config LOCKDEP_SUPPORT 159 bool 160 default y 161 162config ISA_DMA_API 163 bool 164 165config ARCH_MAY_HAVE_PC_FDC 166 bool 167 depends on BROKEN 168 default y 169 170config PGTABLE_LEVELS 171 int 172 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 173 default 2 174 175menu "Processor type and features" 176 177choice 178 prompt "Processor type" 179 default PA7000 if "$(ARCH)" = "parisc" 180 181config PA7000 182 bool "PA7000/PA7100" if "$(ARCH)" = "parisc" 183 help 184 This is the processor type of your CPU. This information is 185 used for optimizing purposes. In order to compile a kernel 186 that can run on all 32-bit PA CPUs (albeit not optimally fast), 187 you can specify "PA7000" here. 188 189 Specifying "PA8000" here will allow you to select a 64-bit kernel 190 which is required on some machines. 191 192config PA7100LC 193 bool "PA7100LC" if "$(ARCH)" = "parisc" 194 help 195 Select this option for the PCX-L processor, as used in the 196 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, 197 D200, D210, D300, D310 and E-class 198 199config PA7200 200 bool "PA7200" if "$(ARCH)" = "parisc" 201 help 202 Select this option for the PCX-T' processor, as used in the 203 C100, C110, J100, J110, J210XC, D250, D260, D350, D360, 204 K100, K200, K210, K220, K400, K410 and K420 205 206config PA7300LC 207 bool "PA7300LC" if "$(ARCH)" = "parisc" 208 help 209 Select this option for the PCX-L2 processor, as used in the 210 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, 211 D220, D230, D320 and D330. 212 213config PA8X00 214 bool "PA8000 and up" 215 help 216 Select this option for PCX-U to PCX-W2 processors. 217 218endchoice 219 220# Define implied options from the CPU selection here 221 222config PA20 223 def_bool y 224 depends on PA8X00 225 226config PA11 227 def_bool y 228 depends on PA7000 || PA7100LC || PA7200 || PA7300LC 229 select ARCH_HAS_SYNC_DMA_FOR_CPU 230 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 231 232config PREFETCH 233 def_bool y 234 depends on PA8X00 || PA7200 235 236config PARISC_HUGE_KERNEL 237 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST 238 239config MLONGCALLS 240 def_bool y if PARISC_HUGE_KERNEL 241 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL 242 depends on PA8X00 243 help 244 If you configure the kernel to include many drivers built-in instead 245 as modules, the kernel executable may become too big, so that the 246 linker will not be able to resolve some long branches and fails to link 247 your vmlinux kernel. In that case enabling this option will help you 248 to overcome this limit by using the -mlong-calls compiler option. 249 250 Usually you want to say N here, unless you e.g. want to build 251 a kernel which includes all necessary drivers built-in and which can 252 be used for TFTP booting without the need to have an initrd ramdisk. 253 254 Enabling this option will probably slow down your kernel. 255 256config 64BIT 257 def_bool y if "$(ARCH)" = "parisc64" 258 bool "64-bit kernel" if "$(ARCH)" = "parisc" 259 depends on PA8X00 260 help 261 Enable this if you want to support 64bit kernel on PA-RISC platform. 262 263 At the moment, only people willing to use more than 2GB of RAM, 264 or having a 64bit-only capable PA-RISC machine should say Y here. 265 266 Since there is no 64bit userland on PA-RISC, there is no point to 267 enable this option otherwise. The 64bit kernel is significantly bigger 268 and slower than the 32bit one. 269 270choice 271 prompt "Kernel page size" 272 default PARISC_PAGE_SIZE_4KB 273 274config PARISC_PAGE_SIZE_4KB 275 bool "4KB" 276 help 277 This lets you select the page size of the kernel. For best 278 performance, a page size of 16KB is recommended. For best 279 compatibility with 32bit applications, a page size of 4KB should be 280 selected (the vast majority of 32bit binaries work perfectly fine 281 with a larger page size). 282 283 4KB For best 32bit compatibility 284 16KB For best performance 285 64KB For best performance, might give more overhead. 286 287 If you don't know what to do, choose 4KB. 288 289config PARISC_PAGE_SIZE_16KB 290 bool "16KB" 291 depends on PA8X00 && BROKEN && !KFENCE 292 293config PARISC_PAGE_SIZE_64KB 294 bool "64KB" 295 depends on PA8X00 && BROKEN && !KFENCE 296 297endchoice 298 299config SMP 300 bool "Symmetric multi-processing support" 301 help 302 This enables support for systems with more than one CPU. If you have 303 a system with only one CPU, say N. If you have a system with more 304 than one CPU, say Y. 305 306 If you say N here, the kernel will run on uni- and multiprocessor 307 machines, but will use only one CPU of a multiprocessor machine. 308 On a uniprocessor machine, the kernel will run faster if you say N. 309 310 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 311 available at <https://www.tldp.org/docs.html#howto>. 312 313 If you don't know what to do here, say N. 314 315config SCHED_MC 316 bool "Multi-core scheduler support" 317 depends on GENERIC_ARCH_TOPOLOGY && PA8X00 318 help 319 Multi-core scheduler support improves the CPU scheduler's decision 320 making when dealing with multi-core CPU chips at a cost of slightly 321 increased overhead in some places. If unsure say N here. 322 323config IRQSTACKS 324 bool "Use separate kernel stacks when processing interrupts" 325 default y 326 help 327 If you say Y here the kernel will use separate kernel stacks 328 for handling hard and soft interrupts. This can help avoid 329 overflowing the process kernel stacks. 330 331config HOTPLUG_CPU 332 bool 333 default y if SMP 334 335config ARCH_SELECT_MEMORY_MODEL 336 def_bool y 337 depends on 64BIT 338 339config ARCH_SPARSEMEM_ENABLE 340 def_bool y 341 depends on 64BIT 342 343config ARCH_FLATMEM_ENABLE 344 def_bool y 345 346config ARCH_SPARSEMEM_DEFAULT 347 def_bool y 348 depends on ARCH_SPARSEMEM_ENABLE 349 350source "kernel/Kconfig.hz" 351 352config COMPAT 353 def_bool y 354 depends on 64BIT 355 356config AUDIT_ARCH 357 def_bool y 358 359config NR_CPUS 360 int "Maximum number of CPUs (2-32)" 361 range 2 32 362 depends on SMP 363 default "8" if 64BIT 364 default "16" 365 366endmenu 367 368config ARCH_SUPPORTS_KEXEC 369 def_bool y 370 371config ARCH_SUPPORTS_KEXEC_FILE 372 def_bool y 373 374config ARCH_SELECTS_KEXEC_FILE 375 def_bool y 376 depends on KEXEC_FILE 377 select KEXEC_ELF 378 379source "drivers/parisc/Kconfig"