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 VIRT_TO_BUS 48 select MODULES_USE_ELF_RELA 49 select CLONE_BACKWARDS 50 select TTY # Needed for pdc_cons.c 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 ISA_DMA_API 134 bool 135 136config ARCH_MAY_HAVE_PC_FDC 137 bool 138 depends on BROKEN 139 default y 140 141config PGTABLE_LEVELS 142 int 143 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 144 default 2 145 146menu "Processor type and features" 147 148choice 149 prompt "Processor type" 150 default PA7000 151 152config PA7000 153 bool "PA7000/PA7100" 154 help 155 This is the processor type of your CPU. This information is 156 used for optimizing purposes. In order to compile a kernel 157 that can run on all 32-bit PA CPUs (albeit not optimally fast), 158 you can specify "PA7000" here. 159 160 Specifying "PA8000" here will allow you to select a 64-bit kernel 161 which is required on some machines. 162 163config PA7100LC 164 bool "PA7100LC" 165 help 166 Select this option for the PCX-L processor, as used in the 167 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, 168 D200, D210, D300, D310 and E-class 169 170config PA7200 171 bool "PA7200" 172 help 173 Select this option for the PCX-T' processor, as used in the 174 C100, C110, J100, J110, J210XC, D250, D260, D350, D360, 175 K100, K200, K210, K220, K400, K410 and K420 176 177config PA7300LC 178 bool "PA7300LC" 179 help 180 Select this option for the PCX-L2 processor, as used in the 181 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, 182 D220, D230, D320 and D330. 183 184config PA8X00 185 bool "PA8000 and up" 186 help 187 Select this option for PCX-U to PCX-W2 processors. 188 189endchoice 190 191# Define implied options from the CPU selection here 192 193config PA20 194 def_bool y 195 depends on PA8X00 196 197config PA11 198 def_bool y 199 depends on PA7000 || PA7100LC || PA7200 || PA7300LC 200 select ARCH_HAS_SYNC_DMA_FOR_CPU 201 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 202 203config PREFETCH 204 def_bool y 205 depends on PA8X00 || PA7200 206 207config PARISC_HUGE_KERNEL 208 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST 209 210config MLONGCALLS 211 def_bool y if PARISC_HUGE_KERNEL 212 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL 213 depends on PA8X00 214 help 215 If you configure the kernel to include many drivers built-in instead 216 as modules, the kernel executable may become too big, so that the 217 linker will not be able to resolve some long branches and fails to link 218 your vmlinux kernel. In that case enabling this option will help you 219 to overcome this limit by using the -mlong-calls compiler option. 220 221 Usually you want to say N here, unless you e.g. want to build 222 a kernel which includes all necessary drivers built-in and which can 223 be used for TFTP booting without the need to have an initrd ramdisk. 224 225 Enabling this option will probably slow down your kernel. 226 227config 64BIT 228 bool "64-bit kernel" 229 depends on PA8X00 230 help 231 Enable this if you want to support 64bit kernel on PA-RISC platform. 232 233 At the moment, only people willing to use more than 2GB of RAM, 234 or having a 64bit-only capable PA-RISC machine should say Y here. 235 236 Since there is no 64bit userland on PA-RISC, there is no point to 237 enable this option otherwise. The 64bit kernel is significantly bigger 238 and slower than the 32bit one. 239 240choice 241 prompt "Kernel page size" 242 default PARISC_PAGE_SIZE_4KB 243 244config PARISC_PAGE_SIZE_4KB 245 bool "4KB" 246 help 247 This lets you select the page size of the kernel. For best 248 performance, a page size of 16KB is recommended. For best 249 compatibility with 32bit applications, a page size of 4KB should be 250 selected (the vast majority of 32bit binaries work perfectly fine 251 with a larger page size). 252 253 4KB For best 32bit compatibility 254 16KB For best performance 255 64KB For best performance, might give more overhead. 256 257 If you don't know what to do, choose 4KB. 258 259config PARISC_PAGE_SIZE_16KB 260 bool "16KB" 261 depends on PA8X00 && BROKEN && !KFENCE 262 263config PARISC_PAGE_SIZE_64KB 264 bool "64KB" 265 depends on PA8X00 && BROKEN && !KFENCE 266 267endchoice 268 269config SMP 270 bool "Symmetric multi-processing support" 271 help 272 This enables support for systems with more than one CPU. If you have 273 a system with only one CPU, say N. If you have a system with more 274 than one CPU, say Y. 275 276 If you say N here, the kernel will run on uni- and multiprocessor 277 machines, but will use only one CPU of a multiprocessor machine. 278 On a uniprocessor machine, the kernel will run faster if you say N. 279 280 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 281 available at <https://www.tldp.org/docs.html#howto>. 282 283 If you don't know what to do here, say N. 284 285config SCHED_MC 286 bool "Multi-core scheduler support" 287 depends on GENERIC_ARCH_TOPOLOGY && PA8X00 288 help 289 Multi-core scheduler support improves the CPU scheduler's decision 290 making when dealing with multi-core CPU chips at a cost of slightly 291 increased overhead in some places. If unsure say N here. 292 293config IRQSTACKS 294 bool "Use separate kernel stacks when processing interrupts" 295 default y 296 help 297 If you say Y here the kernel will use separate kernel stacks 298 for handling hard and soft interrupts. This can help avoid 299 overflowing the process kernel stacks. 300 301config TLB_PTLOCK 302 bool "Use page table locks in TLB fault handler" 303 depends on SMP 304 default n 305 help 306 Select this option to enable page table locking in the TLB 307 fault handler. This ensures that page table entries are 308 updated consistently on SMP machines at the expense of some 309 loss in performance. 310 311config HOTPLUG_CPU 312 bool 313 default y if SMP 314 315config ARCH_SELECT_MEMORY_MODEL 316 def_bool y 317 depends on 64BIT 318 319config ARCH_SPARSEMEM_ENABLE 320 def_bool y 321 depends on 64BIT 322 323config ARCH_FLATMEM_ENABLE 324 def_bool y 325 326config ARCH_SPARSEMEM_DEFAULT 327 def_bool y 328 depends on ARCH_SPARSEMEM_ENABLE 329 330source "kernel/Kconfig.hz" 331 332config COMPAT 333 def_bool y 334 depends on 64BIT 335 336config AUDIT_ARCH 337 def_bool y 338 339config NR_CPUS 340 int "Maximum number of CPUs (2-32)" 341 range 2 32 342 depends on SMP 343 default "4" if 64BIT 344 default "16" 345 346config KEXEC 347 bool "Kexec system call" 348 select KEXEC_CORE 349 help 350 kexec is a system call that implements the ability to shutdown your 351 current kernel, and to start another kernel. It is like a reboot 352 but it is independent of the system firmware. And like a reboot 353 you can start any kernel with it, not just Linux. 354 355 It is an ongoing process to be certain the hardware in a machine 356 shutdown, so do not be surprised if this code does not 357 initially work for you. 358 359config KEXEC_FILE 360 bool "kexec file based system call" 361 select KEXEC_CORE 362 select KEXEC_ELF 363 help 364 This enables the kexec_file_load() System call. This is 365 file based and takes file descriptors as system call argument 366 for kernel and initramfs as opposed to list of segments as 367 accepted by previous system call. 368 369endmenu 370 371source "drivers/parisc/Kconfig" 372