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