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_CPU_CACHE_ALIASING 12 select ARCH_HAS_DMA_ALLOC if PA11 13 select ARCH_HAS_ELF_RANDOMIZE 14 select ARCH_HAS_STRICT_KERNEL_RWX 15 select ARCH_HAS_STRICT_MODULE_RWX 16 select ARCH_HAS_UBSAN 17 select ARCH_HAS_PTE_SPECIAL 18 select ARCH_NO_SG_CHAIN 19 select ARCH_SUPPORTS_HUGETLBFS if PA20 20 select ARCH_SUPPORTS_MEMORY_FAILURE 21 select ARCH_STACKWALK 22 select ARCH_HAS_DEBUG_VM_PGTABLE 23 select HAVE_RELIABLE_STACKTRACE 24 select DMA_OPS 25 select RTC_CLASS 26 select RTC_DRV_GENERIC 27 select INIT_ALL_POSSIBLE 28 select BUG 29 select HAVE_KERNEL_UNCOMPRESSED 30 select HAVE_PCI 31 select HAVE_PERF_EVENTS 32 select HAVE_KERNEL_BZIP2 33 select HAVE_KERNEL_GZIP 34 select HAVE_KERNEL_LZ4 35 select HAVE_KERNEL_LZMA 36 select HAVE_KERNEL_LZO 37 select HAVE_KERNEL_XZ 38 select GENERIC_ATOMIC64 if !64BIT 39 select GENERIC_IRQ_PROBE 40 select GENERIC_PCI_IOMAP 41 select GENERIC_IOREMAP 42 select ARCH_HAVE_NMI_SAFE_CMPXCHG 43 select GENERIC_SMP_IDLE_THREAD 44 select GENERIC_ARCH_TOPOLOGY if SMP 45 select GENERIC_CPU_DEVICES if !SMP 46 select GENERIC_LIB_DEVMEM_IS_ALLOWED 47 select SYSCTL_ARCH_UNALIGN_ALLOW 48 select SYSCTL_EXCEPTION_TRACE 49 select HAVE_MOD_ARCH_SPECIFIC 50 select MODULES_USE_ELF_RELA 51 select CLONE_BACKWARDS 52 select TTY # Needed for pdc_cons.c 53 select HAS_IOPORT if PCI || EISA 54 select HAVE_DEBUG_STACKOVERFLOW 55 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT 56 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT 57 select HAVE_ARCH_MMAP_RND_BITS 58 select HAVE_ARCH_AUDITSYSCALL 59 select HAVE_ARCH_HASH 60 select HAVE_ARCH_JUMP_LABEL 61 select HAVE_ARCH_JUMP_LABEL_RELATIVE 62 select HAVE_ARCH_KFENCE 63 select HAVE_ARCH_SECCOMP_FILTER 64 select HAVE_ARCH_TRACEHOOK 65 select HAVE_EBPF_JIT 66 select ARCH_WANT_DEFAULT_BPF_JIT 67 select HAVE_REGS_AND_STACK_ACCESS_API 68 select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU 69 select GENERIC_SCHED_CLOCK 70 select GENERIC_IRQ_MIGRATION if SMP 71 select HAVE_UNSTABLE_SCHED_CLOCK if SMP 72 select LEGACY_TIMER_TICK 73 select CPU_NO_EFFICIENT_FFS 74 select THREAD_INFO_IN_TASK 75 select NEED_DMA_MAP_STATE 76 select NEED_SG_DMA_LENGTH 77 select HAVE_ARCH_KGDB 78 select HAVE_KPROBES 79 select HAVE_KRETPROBES 80 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1) 81 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE 82 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE 83 select HAVE_KPROBES_ON_FTRACE 84 select HAVE_DYNAMIC_FTRACE_WITH_REGS 85 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS 86 select TRACE_IRQFLAGS_SUPPORT 87 select HAVE_FUNCTION_DESCRIPTORS if 64BIT 88 89 help 90 The PA-RISC microprocessor is designed by Hewlett-Packard and used 91 in many of their workstations & servers (HP9000 700 and 800 series, 92 and later HP3000 series). The PA-RISC Linux project home page is 93 at <https://parisc.wiki.kernel.org>. 94 95config CPU_BIG_ENDIAN 96 def_bool y 97 98config MMU 99 def_bool y 100 101config STACK_GROWSUP 102 def_bool y 103 104config GENERIC_LOCKBREAK 105 bool 106 default y 107 depends on SMP && PREEMPTION 108 109config ARCH_HAS_ILOG2_U32 110 bool 111 default n 112 113config ARCH_HAS_ILOG2_U64 114 bool 115 default n 116 117config GENERIC_BUG 118 def_bool y 119 depends on BUG 120 select GENERIC_BUG_RELATIVE_POINTERS if 64BIT 121 122config GENERIC_BUG_RELATIVE_POINTERS 123 bool 124 125config GENERIC_HWEIGHT 126 bool 127 default y 128 129config GENERIC_CALIBRATE_DELAY 130 bool 131 default y 132 133config TIME_LOW_RES 134 bool 135 depends on SMP 136 default y 137 138config ARCH_MMAP_RND_BITS_MIN 139 default 18 if 64BIT 140 default 8 141 142config ARCH_MMAP_RND_COMPAT_BITS_MIN 143 default 8 144 145config ARCH_MMAP_RND_BITS_MAX 146 default 18 if 64BIT 147 default 13 148 149config ARCH_MMAP_RND_COMPAT_BITS_MAX 150 default 13 151 152# unless you want to implement ACPI on PA-RISC ... ;-) 153config PM 154 bool 155 156config STACKTRACE_SUPPORT 157 def_bool y 158 159config LOCKDEP_SUPPORT 160 bool 161 default y 162 163config ISA_DMA_API 164 bool 165 166config ARCH_MAY_HAVE_PC_FDC 167 bool 168 depends on BROKEN 169 default y 170 171config PGTABLE_LEVELS 172 int 173 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 174 default 2 175 176menu "Processor type and features" 177 178choice 179 prompt "Processor type" 180 default PA7000 if "$(ARCH)" = "parisc" 181 182config PA7000 183 bool "PA7000/PA7100" if "$(ARCH)" = "parisc" 184 help 185 This is the processor type of your CPU. This information is 186 used for optimizing purposes. In order to compile a kernel 187 that can run on all 32-bit PA CPUs (albeit not optimally fast), 188 you can specify "PA7000" here. 189 190 Specifying "PA8000" here will allow you to select a 64-bit kernel 191 which is required on some machines. 192 193config PA7100LC 194 bool "PA7100LC" if "$(ARCH)" = "parisc" 195 help 196 Select this option for the PCX-L processor, as used in the 197 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, 198 D200, D210, D300, D310 and E-class 199 200config PA7200 201 bool "PA7200" if "$(ARCH)" = "parisc" 202 help 203 Select this option for the PCX-T' processor, as used in the 204 C100, C110, J100, J110, J210XC, D250, D260, D350, D360, 205 K100, K200, K210, K220, K400, K410 and K420 206 207config PA7300LC 208 bool "PA7300LC" if "$(ARCH)" = "parisc" 209 help 210 Select this option for the PCX-L2 processor, as used in the 211 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, 212 D220, D230, D320 and D330. 213 214config PA8X00 215 bool "PA8000 and up" 216 help 217 Select this option for PCX-U to PCX-W2 processors. 218 219endchoice 220 221# Define implied options from the CPU selection here 222 223config PA20 224 def_bool y 225 depends on PA8X00 226 227config PA11 228 def_bool y 229 depends on PA7000 || PA7100LC || PA7200 || PA7300LC 230 select ARCH_HAS_SYNC_DMA_FOR_CPU 231 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 232 233config PREFETCH 234 def_bool y 235 depends on PA8X00 || PA7200 236 237config PARISC_HUGE_KERNEL 238 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST 239 240config MLONGCALLS 241 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL 242 depends on PA8X00 243 default PARISC_HUGE_KERNEL 244 help 245 If you configure the kernel to include many drivers built-in instead 246 as modules, the kernel executable may become too big, so that the 247 linker will not be able to resolve some long branches and fails to link 248 your vmlinux kernel. In that case enabling this option will help you 249 to overcome this limit by using the -mlong-calls compiler option. 250 251 Usually you want to say N here, unless you e.g. want to build 252 a kernel which includes all necessary drivers built-in and which can 253 be used for TFTP booting without the need to have an initrd ramdisk. 254 255 Enabling this option will probably slow down your kernel. 256 257config 64BIT 258 bool "64-bit kernel" if "$(ARCH)" = "parisc" 259 depends on PA8X00 260 default "$(ARCH)" = "parisc64" 261 help 262 Enable this if you want to support 64bit kernel on PA-RISC platform. 263 264 At the moment, only people willing to use more than 2GB of RAM, 265 or having a 64bit-only capable PA-RISC machine should say Y here. 266 267 Since there is no 64bit userland on PA-RISC, there is no point to 268 enable this option otherwise. The 64bit kernel is significantly bigger 269 and slower than the 32bit one. 270 271choice 272 prompt "Kernel page size" 273 default PARISC_PAGE_SIZE_4KB 274 275config PARISC_PAGE_SIZE_4KB 276 bool "4KB" 277 select HAVE_PAGE_SIZE_4KB 278 help 279 This lets you select the page size of the kernel. For best 280 performance, a page size of 16KB is recommended. For best 281 compatibility with 32bit applications, a page size of 4KB should be 282 selected (the vast majority of 32bit binaries work perfectly fine 283 with a larger page size). 284 285 4KB For best 32bit compatibility 286 16KB For best performance 287 64KB For best performance, might give more overhead. 288 289 If you don't know what to do, choose 4KB. 290 291config PARISC_PAGE_SIZE_16KB 292 bool "16KB" 293 select HAVE_PAGE_SIZE_16KB 294 depends on PA8X00 && BROKEN && !KFENCE 295 296config PARISC_PAGE_SIZE_64KB 297 bool "64KB" 298 select HAVE_PAGE_SIZE_64KB 299 depends on PA8X00 && BROKEN && !KFENCE 300 301endchoice 302 303config SMP 304 bool "Symmetric multi-processing support" 305 help 306 This enables support for systems with more than one CPU. If you have 307 a system with only one CPU, say N. If you have a system with more 308 than one CPU, say Y. 309 310 If you say N here, the kernel will run on uni- and multiprocessor 311 machines, but will use only one CPU of a multiprocessor machine. 312 On a uniprocessor machine, the kernel will run faster if you say N. 313 314 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 315 available at <https://www.tldp.org/docs.html#howto>. 316 317 If you don't know what to do here, say N. 318 319config SCHED_MC 320 bool "Multi-core scheduler support" 321 depends on GENERIC_ARCH_TOPOLOGY && PA8X00 322 help 323 Multi-core scheduler support improves the CPU scheduler's decision 324 making when dealing with multi-core CPU chips at a cost of slightly 325 increased overhead in some places. If unsure say N here. 326 327config IRQSTACKS 328 bool "Use separate kernel stacks when processing interrupts" 329 default y 330 help 331 If you say Y here the kernel will use separate kernel stacks 332 for handling hard and soft interrupts. This can help avoid 333 overflowing the process kernel stacks. 334 335config HOTPLUG_CPU 336 bool 337 default y if SMP 338 339config ARCH_SELECT_MEMORY_MODEL 340 def_bool y 341 depends on 64BIT 342 343config ARCH_SPARSEMEM_ENABLE 344 def_bool y 345 depends on 64BIT 346 347config ARCH_FLATMEM_ENABLE 348 def_bool y 349 350config ARCH_SPARSEMEM_DEFAULT 351 def_bool y 352 depends on ARCH_SPARSEMEM_ENABLE 353 354source "kernel/Kconfig.hz" 355 356config COMPAT 357 def_bool y 358 depends on 64BIT 359 360config AUDIT_ARCH 361 def_bool y 362 363config NR_CPUS 364 int "Maximum number of CPUs (2-32)" 365 range 2 32 366 depends on SMP 367 default "8" if 64BIT 368 default "16" 369 370endmenu 371 372config ARCH_SUPPORTS_KEXEC 373 def_bool y 374 375config ARCH_SUPPORTS_KEXEC_FILE 376 def_bool y 377 378config ARCH_SELECTS_KEXEC_FILE 379 def_bool y 380 depends on KEXEC_FILE 381 select KEXEC_ELF 382 383source "drivers/parisc/Kconfig" 384