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_SPLIT_ARG64 if !64BIT 20 select ARCH_SUPPORTS_HUGETLBFS if PA20 21 select ARCH_SUPPORTS_MEMORY_FAILURE 22 select ARCH_STACKWALK 23 select ARCH_HAS_DEBUG_VM_PGTABLE 24 select HAVE_RELIABLE_STACKTRACE 25 select DMA_OPS 26 select RTC_CLASS 27 select RTC_DRV_GENERIC 28 select INIT_ALL_POSSIBLE 29 select BUG 30 select HAVE_KERNEL_UNCOMPRESSED 31 select HAVE_PCI 32 select HAVE_PERF_EVENTS 33 select HAVE_KERNEL_BZIP2 34 select HAVE_KERNEL_GZIP 35 select HAVE_KERNEL_LZ4 36 select HAVE_KERNEL_LZMA 37 select HAVE_KERNEL_LZO 38 select HAVE_KERNEL_XZ 39 select GENERIC_ATOMIC64 if !64BIT 40 select GENERIC_IRQ_PROBE 41 select GENERIC_PCI_IOMAP 42 select GENERIC_IOREMAP 43 select ARCH_HAVE_NMI_SAFE_CMPXCHG 44 select GENERIC_SMP_IDLE_THREAD 45 select GENERIC_ARCH_TOPOLOGY if SMP 46 select GENERIC_CPU_DEVICES if !SMP 47 select GENERIC_LIB_DEVMEM_IS_ALLOWED 48 select SYSCTL_ARCH_UNALIGN_ALLOW 49 select SYSCTL_ARCH_UNALIGN_NO_WARN 50 select SYSCTL_EXCEPTION_TRACE 51 select HAVE_MOD_ARCH_SPECIFIC 52 select MODULES_USE_ELF_RELA 53 select CLONE_BACKWARDS 54 select TTY # Needed for pdc_cons.c 55 select HAS_IOPORT if PCI || EISA 56 select HAVE_DEBUG_STACKOVERFLOW 57 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT 58 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT 59 select HAVE_ARCH_MMAP_RND_BITS 60 select HAVE_ARCH_AUDITSYSCALL 61 select HAVE_ARCH_HASH 62 select HAVE_ARCH_JUMP_LABEL 63 select HAVE_ARCH_JUMP_LABEL_RELATIVE 64 select HAVE_ARCH_KFENCE 65 select HAVE_ARCH_SECCOMP_FILTER 66 select HAVE_ARCH_TRACEHOOK 67 select HAVE_EBPF_JIT 68 select ARCH_WANT_DEFAULT_BPF_JIT 69 select HAVE_REGS_AND_STACK_ACCESS_API 70 select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU 71 select GENERIC_SCHED_CLOCK 72 select GENERIC_IRQ_MIGRATION if SMP 73 select HAVE_UNSTABLE_SCHED_CLOCK if SMP 74 select LEGACY_TIMER_TICK 75 select CPU_NO_EFFICIENT_FFS 76 select THREAD_INFO_IN_TASK 77 select NEED_DMA_MAP_STATE 78 select NEED_SG_DMA_LENGTH 79 select HAVE_ARCH_KGDB 80 select HAVE_KPROBES 81 select HAVE_KRETPROBES 82 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1) 83 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE 84 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE 85 select HAVE_KPROBES_ON_FTRACE 86 select HAVE_DYNAMIC_FTRACE_WITH_REGS 87 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS 88 select TRACE_IRQFLAGS_SUPPORT 89 select HAVE_FUNCTION_DESCRIPTORS if 64BIT 90 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 91 92 help 93 The PA-RISC microprocessor is designed by Hewlett-Packard and used 94 in many of their workstations & servers (HP9000 700 and 800 series, 95 and later HP3000 series). The PA-RISC Linux project home page is 96 at <https://parisc.wiki.kernel.org>. 97 98config CPU_BIG_ENDIAN 99 def_bool y 100 101config MMU 102 def_bool y 103 104config STACK_GROWSUP 105 def_bool y 106 107config GENERIC_LOCKBREAK 108 bool 109 default y 110 depends on SMP && PREEMPTION 111 112config ARCH_HAS_ILOG2_U32 113 bool 114 default n 115 116config ARCH_HAS_ILOG2_U64 117 bool 118 default n 119 120config GENERIC_BUG 121 def_bool y 122 depends on BUG 123 select GENERIC_BUG_RELATIVE_POINTERS if 64BIT 124 125config GENERIC_BUG_RELATIVE_POINTERS 126 bool 127 128config GENERIC_HWEIGHT 129 bool 130 default y 131 132config GENERIC_CALIBRATE_DELAY 133 bool 134 default y 135 136config TIME_LOW_RES 137 bool 138 depends on SMP 139 default y 140 141config ARCH_MMAP_RND_BITS_MIN 142 default 18 if 64BIT 143 default 8 144 145config ARCH_MMAP_RND_COMPAT_BITS_MIN 146 default 8 147 148config ARCH_MMAP_RND_BITS_MAX 149 default 18 if 64BIT 150 default 13 151 152config ARCH_MMAP_RND_COMPAT_BITS_MAX 153 default 13 154 155# unless you want to implement ACPI on PA-RISC ... ;-) 156config PM 157 bool 158 159config STACKTRACE_SUPPORT 160 def_bool y 161 162config LOCKDEP_SUPPORT 163 bool 164 default y 165 166config ISA_DMA_API 167 bool 168 169config ARCH_MAY_HAVE_PC_FDC 170 bool 171 depends on BROKEN 172 default y 173 174config PGTABLE_LEVELS 175 int 176 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 177 default 2 178 179menu "Processor type and features" 180 181choice 182 prompt "Processor type" 183 default PA7000 if "$(ARCH)" = "parisc" 184 185config PA7000 186 bool "PA7000/PA7100" if "$(ARCH)" = "parisc" 187 help 188 This is the processor type of your CPU. This information is 189 used for optimizing purposes. In order to compile a kernel 190 that can run on all 32-bit PA CPUs (albeit not optimally fast), 191 you can specify "PA7000" here. 192 193 Specifying "PA8000" here will allow you to select a 64-bit kernel 194 which is required on some machines. 195 196config PA7100LC 197 bool "PA7100LC" if "$(ARCH)" = "parisc" 198 help 199 Select this option for the PCX-L processor, as used in the 200 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, 201 D200, D210, D300, D310 and E-class 202 203config PA7200 204 bool "PA7200" if "$(ARCH)" = "parisc" 205 help 206 Select this option for the PCX-T' processor, as used in the 207 C100, C110, J100, J110, J210XC, D250, D260, D350, D360, 208 K100, K200, K210, K220, K400, K410 and K420 209 210config PA7300LC 211 bool "PA7300LC" if "$(ARCH)" = "parisc" 212 help 213 Select this option for the PCX-L2 processor, as used in the 214 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, 215 D220, D230, D320 and D330. 216 217config PA8X00 218 bool "PA8000 and up" 219 help 220 Select this option for PCX-U to PCX-W2 processors. 221 222endchoice 223 224# Define implied options from the CPU selection here 225 226config PA20 227 def_bool y 228 depends on PA8X00 229 230config PA11 231 def_bool y 232 depends on PA7000 || PA7100LC || PA7200 || PA7300LC 233 select ARCH_HAS_SYNC_DMA_FOR_CPU 234 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 235 236config PREFETCH 237 def_bool y 238 depends on PA8X00 || PA7200 239 240config PARISC_HUGE_KERNEL 241 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST 242 243config MLONGCALLS 244 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL 245 depends on PA8X00 246 default PARISC_HUGE_KERNEL 247 help 248 If you configure the kernel to include many drivers built-in instead 249 as modules, the kernel executable may become too big, so that the 250 linker will not be able to resolve some long branches and fails to link 251 your vmlinux kernel. In that case enabling this option will help you 252 to overcome this limit by using the -mlong-calls compiler option. 253 254 Usually you want to say N here, unless you e.g. want to build 255 a kernel which includes all necessary drivers built-in and which can 256 be used for TFTP booting without the need to have an initrd ramdisk. 257 258 Enabling this option will probably slow down your kernel. 259 260config 64BIT 261 bool "64-bit kernel" if "$(ARCH)" = "parisc" 262 depends on PA8X00 263 default "$(ARCH)" = "parisc64" 264 help 265 Enable this if you want to support 64bit kernel on PA-RISC platform. 266 267 At the moment, only people willing to use more than 2GB of RAM, 268 or having a 64bit-only capable PA-RISC machine should say Y here. 269 270 Since there is no 64bit userland on PA-RISC, there is no point to 271 enable this option otherwise. The 64bit kernel is significantly bigger 272 and slower than the 32bit one. 273 274choice 275 prompt "Kernel page size" 276 default PARISC_PAGE_SIZE_4KB 277 278config PARISC_PAGE_SIZE_4KB 279 bool "4KB" 280 select HAVE_PAGE_SIZE_4KB 281 help 282 This lets you select the page size of the kernel. For best 283 performance, a page size of 16KB is recommended. For best 284 compatibility with 32bit applications, a page size of 4KB should be 285 selected (the vast majority of 32bit binaries work perfectly fine 286 with a larger page size). 287 288 4KB For best 32bit compatibility 289 16KB For best performance 290 64KB For best performance, might give more overhead. 291 292 If you don't know what to do, choose 4KB. 293 294config PARISC_PAGE_SIZE_16KB 295 bool "16KB" 296 select HAVE_PAGE_SIZE_16KB 297 depends on PA8X00 && BROKEN && !KFENCE 298 299config PARISC_PAGE_SIZE_64KB 300 bool "64KB" 301 select HAVE_PAGE_SIZE_64KB 302 depends on PA8X00 && BROKEN && !KFENCE 303 304endchoice 305 306config SMP 307 bool "Symmetric multi-processing support" 308 help 309 This enables support for systems with more than one CPU. If you have 310 a system with only one CPU, say N. If you have a system with more 311 than one CPU, say Y. 312 313 If you say N here, the kernel will run on uni- and multiprocessor 314 machines, but will use only one CPU of a multiprocessor machine. 315 On a uniprocessor machine, the kernel will run faster if you say N. 316 317 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 318 available at <https://www.tldp.org/docs.html#howto>. 319 320 If you don't know what to do here, say N. 321 322config SCHED_MC 323 bool "Multi-core scheduler support" 324 depends on GENERIC_ARCH_TOPOLOGY && PA8X00 325 help 326 Multi-core scheduler support improves the CPU scheduler's decision 327 making when dealing with multi-core CPU chips at a cost of slightly 328 increased overhead in some places. If unsure say N here. 329 330config IRQSTACKS 331 bool "Use separate kernel stacks when processing interrupts" 332 default y 333 help 334 If you say Y here the kernel will use separate kernel stacks 335 for handling hard and soft interrupts. This can help avoid 336 overflowing the process kernel stacks. 337 338config HOTPLUG_CPU 339 bool 340 default y if SMP 341 342config ARCH_SELECT_MEMORY_MODEL 343 def_bool y 344 depends on 64BIT 345 346config ARCH_SPARSEMEM_ENABLE 347 def_bool y 348 depends on 64BIT 349 350config ARCH_FLATMEM_ENABLE 351 def_bool y 352 353config ARCH_SPARSEMEM_DEFAULT 354 def_bool y 355 depends on ARCH_SPARSEMEM_ENABLE 356 357source "kernel/Kconfig.hz" 358 359config COMPAT 360 def_bool y 361 depends on 64BIT 362 363config AUDIT_ARCH 364 def_bool y 365 366config NR_CPUS 367 int "Maximum number of CPUs (2-32)" 368 range 2 32 369 depends on SMP 370 default "8" if 64BIT 371 default "16" 372 373endmenu 374 375config ARCH_SUPPORTS_KEXEC 376 def_bool y 377 378config ARCH_SUPPORTS_KEXEC_FILE 379 def_bool y 380 381config ARCH_SELECTS_KEXEC_FILE 382 def_bool y 383 depends on KEXEC_FILE 384 select KEXEC_ELF 385 386source "drivers/parisc/Kconfig" 387