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 def_bool y 117 depends on BUG 118 select GENERIC_BUG_RELATIVE_POINTERS if 64BIT 119 120config GENERIC_BUG_RELATIVE_POINTERS 121 bool 122 123config GENERIC_HWEIGHT 124 bool 125 default y 126 127config GENERIC_CALIBRATE_DELAY 128 bool 129 default y 130 131config TIME_LOW_RES 132 bool 133 depends on SMP 134 default y 135 136config ARCH_MMAP_RND_BITS_MIN 137 default 18 if 64BIT 138 default 8 139 140config ARCH_MMAP_RND_COMPAT_BITS_MIN 141 default 8 142 143config ARCH_MMAP_RND_BITS_MAX 144 default 18 if 64BIT 145 default 13 146 147config ARCH_MMAP_RND_COMPAT_BITS_MAX 148 default 13 149 150# unless you want to implement ACPI on PA-RISC ... ;-) 151config PM 152 bool 153 154config STACKTRACE_SUPPORT 155 def_bool y 156 157config LOCKDEP_SUPPORT 158 bool 159 default y 160 161config ISA_DMA_API 162 bool 163 164config ARCH_MAY_HAVE_PC_FDC 165 bool 166 depends on BROKEN 167 default y 168 169config PGTABLE_LEVELS 170 int 171 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 172 default 2 173 174menu "Processor type and features" 175 176choice 177 prompt "Processor type" 178 default PA7000 if "$(ARCH)" = "parisc" 179 180config PA7000 181 bool "PA7000/PA7100" if "$(ARCH)" = "parisc" 182 help 183 This is the processor type of your CPU. This information is 184 used for optimizing purposes. In order to compile a kernel 185 that can run on all 32-bit PA CPUs (albeit not optimally fast), 186 you can specify "PA7000" here. 187 188 Specifying "PA8000" here will allow you to select a 64-bit kernel 189 which is required on some machines. 190 191config PA7100LC 192 bool "PA7100LC" if "$(ARCH)" = "parisc" 193 help 194 Select this option for the PCX-L processor, as used in the 195 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, 196 D200, D210, D300, D310 and E-class 197 198config PA7200 199 bool "PA7200" if "$(ARCH)" = "parisc" 200 help 201 Select this option for the PCX-T' processor, as used in the 202 C100, C110, J100, J110, J210XC, D250, D260, D350, D360, 203 K100, K200, K210, K220, K400, K410 and K420 204 205config PA7300LC 206 bool "PA7300LC" if "$(ARCH)" = "parisc" 207 help 208 Select this option for the PCX-L2 processor, as used in the 209 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, 210 D220, D230, D320 and D330. 211 212config PA8X00 213 bool "PA8000 and up" 214 help 215 Select this option for PCX-U to PCX-W2 processors. 216 217endchoice 218 219# Define implied options from the CPU selection here 220 221config PA20 222 def_bool y 223 depends on PA8X00 224 225config PA11 226 def_bool y 227 depends on PA7000 || PA7100LC || PA7200 || PA7300LC 228 select ARCH_HAS_SYNC_DMA_FOR_CPU 229 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 230 231config PREFETCH 232 def_bool y 233 depends on PA8X00 || PA7200 234 235config PARISC_HUGE_KERNEL 236 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST 237 238config MLONGCALLS 239 def_bool y if PARISC_HUGE_KERNEL 240 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL 241 depends on PA8X00 242 help 243 If you configure the kernel to include many drivers built-in instead 244 as modules, the kernel executable may become too big, so that the 245 linker will not be able to resolve some long branches and fails to link 246 your vmlinux kernel. In that case enabling this option will help you 247 to overcome this limit by using the -mlong-calls compiler option. 248 249 Usually you want to say N here, unless you e.g. want to build 250 a kernel which includes all necessary drivers built-in and which can 251 be used for TFTP booting without the need to have an initrd ramdisk. 252 253 Enabling this option will probably slow down your kernel. 254 255config 64BIT 256 def_bool y if "$(ARCH)" = "parisc64" 257 bool "64-bit kernel" if "$(ARCH)" = "parisc" 258 depends on PA8X00 259 help 260 Enable this if you want to support 64bit kernel on PA-RISC platform. 261 262 At the moment, only people willing to use more than 2GB of RAM, 263 or having a 64bit-only capable PA-RISC machine should say Y here. 264 265 Since there is no 64bit userland on PA-RISC, there is no point to 266 enable this option otherwise. The 64bit kernel is significantly bigger 267 and slower than the 32bit one. 268 269choice 270 prompt "Kernel page size" 271 default PARISC_PAGE_SIZE_4KB 272 273config PARISC_PAGE_SIZE_4KB 274 bool "4KB" 275 help 276 This lets you select the page size of the kernel. For best 277 performance, a page size of 16KB is recommended. For best 278 compatibility with 32bit applications, a page size of 4KB should be 279 selected (the vast majority of 32bit binaries work perfectly fine 280 with a larger page size). 281 282 4KB For best 32bit compatibility 283 16KB For best performance 284 64KB For best performance, might give more overhead. 285 286 If you don't know what to do, choose 4KB. 287 288config PARISC_PAGE_SIZE_16KB 289 bool "16KB" 290 depends on PA8X00 && BROKEN && !KFENCE 291 292config PARISC_PAGE_SIZE_64KB 293 bool "64KB" 294 depends on PA8X00 && BROKEN && !KFENCE 295 296endchoice 297 298config SMP 299 bool "Symmetric multi-processing support" 300 help 301 This enables support for systems with more than one CPU. If you have 302 a system with only one CPU, say N. If you have a system with more 303 than one CPU, say Y. 304 305 If you say N here, the kernel will run on uni- and multiprocessor 306 machines, but will use only one CPU of a multiprocessor machine. 307 On a uniprocessor machine, the kernel will run faster if you say N. 308 309 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 310 available at <https://www.tldp.org/docs.html#howto>. 311 312 If you don't know what to do here, say N. 313 314config SCHED_MC 315 bool "Multi-core scheduler support" 316 depends on GENERIC_ARCH_TOPOLOGY && PA8X00 317 help 318 Multi-core scheduler support improves the CPU scheduler's decision 319 making when dealing with multi-core CPU chips at a cost of slightly 320 increased overhead in some places. If unsure say N here. 321 322config IRQSTACKS 323 bool "Use separate kernel stacks when processing interrupts" 324 default y 325 help 326 If you say Y here the kernel will use separate kernel stacks 327 for handling hard and soft interrupts. This can help avoid 328 overflowing the process kernel stacks. 329 330config HOTPLUG_CPU 331 bool 332 default y if SMP 333 334config ARCH_SELECT_MEMORY_MODEL 335 def_bool y 336 depends on 64BIT 337 338config ARCH_SPARSEMEM_ENABLE 339 def_bool y 340 depends on 64BIT 341 342config ARCH_FLATMEM_ENABLE 343 def_bool y 344 345config ARCH_SPARSEMEM_DEFAULT 346 def_bool y 347 depends on ARCH_SPARSEMEM_ENABLE 348 349source "kernel/Kconfig.hz" 350 351config COMPAT 352 def_bool y 353 depends on 64BIT 354 355config AUDIT_ARCH 356 def_bool y 357 358config NR_CPUS 359 int "Maximum number of CPUs (2-32)" 360 range 2 32 361 depends on SMP 362 default "8" if 64BIT 363 default "16" 364 365endmenu 366 367config ARCH_SUPPORTS_KEXEC 368 def_bool y 369 370config ARCH_SUPPORTS_KEXEC_FILE 371 def_bool y 372 373config ARCH_SELECTS_KEXEC_FILE 374 def_bool y 375 depends on KEXEC_FILE 376 select KEXEC_ELF 377 378source "drivers/parisc/Kconfig" 379