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