1# SPDX-License-Identifier: GPL-2.0 2config PARISC 3 def_bool y 4 select ARCH_32BIT_OFF_T if !64BIT 5 select ARCH_MIGHT_HAVE_PC_PARPORT 6 select HAVE_IDE 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_UBSAN_SANITIZE_ALL 14 select ARCH_NO_SG_CHAIN 15 select ARCH_SUPPORTS_MEMORY_FAILURE 16 select DMA_OPS 17 select RTC_CLASS 18 select RTC_DRV_GENERIC 19 select INIT_ALL_POSSIBLE 20 select BUG 21 select BUILDTIME_TABLE_SORT 22 select HAVE_PCI 23 select HAVE_PERF_EVENTS 24 select HAVE_KERNEL_BZIP2 25 select HAVE_KERNEL_GZIP 26 select HAVE_KERNEL_LZ4 27 select HAVE_KERNEL_LZMA 28 select HAVE_KERNEL_LZO 29 select HAVE_KERNEL_XZ 30 select GENERIC_ATOMIC64 if !64BIT 31 select GENERIC_IRQ_PROBE 32 select GENERIC_PCI_IOMAP 33 select ARCH_HAVE_NMI_SAFE_CMPXCHG 34 select GENERIC_SMP_IDLE_THREAD 35 select GENERIC_CPU_DEVICES 36 select GENERIC_STRNCPY_FROM_USER 37 select GENERIC_LIB_DEVMEM_IS_ALLOWED 38 select SYSCTL_ARCH_UNALIGN_ALLOW 39 select SYSCTL_EXCEPTION_TRACE 40 select HAVE_MOD_ARCH_SPECIFIC 41 select VIRT_TO_BUS 42 select MODULES_USE_ELF_RELA 43 select CLONE_BACKWARDS 44 select TTY # Needed for pdc_cons.c 45 select HAVE_DEBUG_STACKOVERFLOW 46 select HAVE_ARCH_AUDITSYSCALL 47 select HAVE_ARCH_HASH 48 select HAVE_ARCH_JUMP_LABEL 49 select HAVE_ARCH_JUMP_LABEL_RELATIVE 50 select HAVE_ARCH_SECCOMP_FILTER 51 select HAVE_ARCH_TRACEHOOK 52 select HAVE_REGS_AND_STACK_ACCESS_API 53 select GENERIC_SCHED_CLOCK 54 select HAVE_UNSTABLE_SCHED_CLOCK if SMP 55 select LEGACY_TIMER_TICK 56 select CPU_NO_EFFICIENT_FFS 57 select NEED_DMA_MAP_STATE 58 select NEED_SG_DMA_LENGTH 59 select HAVE_ARCH_KGDB 60 select HAVE_KPROBES 61 select HAVE_KRETPROBES 62 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1) 63 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE 64 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE 65 select HAVE_KPROBES_ON_FTRACE 66 select HAVE_DYNAMIC_FTRACE_WITH_REGS 67 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS 68 select SET_FS 69 70 help 71 The PA-RISC microprocessor is designed by Hewlett-Packard and used 72 in many of their workstations & servers (HP9000 700 and 800 series, 73 and later HP3000 series). The PA-RISC Linux project home page is 74 at <https://parisc.wiki.kernel.org>. 75 76config CPU_BIG_ENDIAN 77 def_bool y 78 79config MMU 80 def_bool y 81 82config STACK_GROWSUP 83 def_bool y 84 85config ARCH_DEFCONFIG 86 string 87 default "arch/parisc/configs/generic-32bit_defconfig" if !64BIT 88 default "arch/parisc/configs/generic-64bit_defconfig" if 64BIT 89 90config GENERIC_LOCKBREAK 91 bool 92 default y 93 depends on SMP && PREEMPTION 94 95config ARCH_HAS_ILOG2_U32 96 bool 97 default n 98 99config ARCH_HAS_ILOG2_U64 100 bool 101 default n 102 103config GENERIC_BUG 104 bool 105 default y 106 depends on BUG 107 108config GENERIC_HWEIGHT 109 bool 110 default y 111 112config GENERIC_CALIBRATE_DELAY 113 bool 114 default y 115 116config TIME_LOW_RES 117 bool 118 depends on SMP 119 default y 120 121# unless you want to implement ACPI on PA-RISC ... ;-) 122config PM 123 bool 124 125config STACKTRACE_SUPPORT 126 def_bool y 127 128config ISA_DMA_API 129 bool 130 131config ARCH_MAY_HAVE_PC_FDC 132 bool 133 depends on BROKEN 134 default y 135 136config PGTABLE_LEVELS 137 int 138 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 139 default 2 140 141config SYS_SUPPORTS_HUGETLBFS 142 def_bool y if PA20 143 144 145menu "Processor type and features" 146 147choice 148 prompt "Processor type" 149 default PA7000 150 151config PA7000 152 bool "PA7000/PA7100" 153 help 154 This is the processor type of your CPU. This information is 155 used for optimizing purposes. In order to compile a kernel 156 that can run on all 32-bit PA CPUs (albeit not optimally fast), 157 you can specify "PA7000" here. 158 159 Specifying "PA8000" here will allow you to select a 64-bit kernel 160 which is required on some machines. 161 162config PA7100LC 163 bool "PA7100LC" 164 help 165 Select this option for the PCX-L processor, as used in the 166 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, 167 D200, D210, D300, D310 and E-class 168 169config PA7200 170 bool "PA7200" 171 help 172 Select this option for the PCX-T' processor, as used in the 173 C100, C110, J100, J110, J210XC, D250, D260, D350, D360, 174 K100, K200, K210, K220, K400, K410 and K420 175 176config PA7300LC 177 bool "PA7300LC" 178 help 179 Select this option for the PCX-L2 processor, as used in the 180 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, 181 D220, D230, D320 and D330. 182 183config PA8X00 184 bool "PA8000 and up" 185 help 186 Select this option for PCX-U to PCX-W2 processors. 187 188endchoice 189 190# Define implied options from the CPU selection here 191 192config PA20 193 def_bool y 194 depends on PA8X00 195 196config PA11 197 def_bool y 198 depends on PA7000 || PA7100LC || PA7200 || PA7300LC 199 select ARCH_HAS_SYNC_DMA_FOR_CPU 200 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 201 202config PREFETCH 203 def_bool y 204 depends on PA8X00 || PA7200 205 206config PARISC_HUGE_KERNEL 207 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST 208 209config MLONGCALLS 210 def_bool y if PARISC_HUGE_KERNEL 211 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL 212 depends on PA8X00 213 help 214 If you configure the kernel to include many drivers built-in instead 215 as modules, the kernel executable may become too big, so that the 216 linker will not be able to resolve some long branches and fails to link 217 your vmlinux kernel. In that case enabling this option will help you 218 to overcome this limit by using the -mlong-calls compiler option. 219 220 Usually you want to say N here, unless you e.g. want to build 221 a kernel which includes all necessary drivers built-in and which can 222 be used for TFTP booting without the need to have an initrd ramdisk. 223 224 Enabling this option will probably slow down your kernel. 225 226config 64BIT 227 bool "64-bit kernel" 228 depends on PA8X00 229 help 230 Enable this if you want to support 64bit kernel on PA-RISC platform. 231 232 At the moment, only people willing to use more than 2GB of RAM, 233 or having a 64bit-only capable PA-RISC machine should say Y here. 234 235 Since there is no 64bit userland on PA-RISC, there is no point to 236 enable this option otherwise. The 64bit kernel is significantly bigger 237 and slower than the 32bit one. 238 239choice 240 prompt "Kernel page size" 241 default PARISC_PAGE_SIZE_4KB 242 243config PARISC_PAGE_SIZE_4KB 244 bool "4KB" 245 help 246 This lets you select the page size of the kernel. For best 247 performance, a page size of 16KB is recommended. For best 248 compatibility with 32bit applications, a page size of 4KB should be 249 selected (the vast majority of 32bit binaries work perfectly fine 250 with a larger page size). 251 252 4KB For best 32bit compatibility 253 16KB For best performance 254 64KB For best performance, might give more overhead. 255 256 If you don't know what to do, choose 4KB. 257 258config PARISC_PAGE_SIZE_16KB 259 bool "16KB" 260 depends on PA8X00 && BROKEN 261 262config PARISC_PAGE_SIZE_64KB 263 bool "64KB" 264 depends on PA8X00 && BROKEN 265 266endchoice 267 268config PARISC_SELF_EXTRACT 269 bool "Build kernel as self-extracting executable" 270 default y 271 help 272 Say Y if you want to build the parisc kernel as a kind of 273 self-extracting executable. 274 275 If you say N here, the kernel will be compressed with gzip 276 which can be loaded by the palo bootloader directly too. 277 278 If you don't know what to do here, say Y. 279 280config SMP 281 bool "Symmetric multi-processing support" 282 help 283 This enables support for systems with more than one CPU. If you have 284 a system with only one CPU, say N. If you have a system with more 285 than one CPU, say Y. 286 287 If you say N here, the kernel will run on uni- and multiprocessor 288 machines, but will use only one CPU of a multiprocessor machine. 289 On a uniprocessor machine, the kernel will run faster if you say N. 290 291 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 292 available at <https://www.tldp.org/docs.html#howto>. 293 294 If you don't know what to do here, say N. 295 296config PARISC_CPU_TOPOLOGY 297 bool "Support cpu topology definition" 298 depends on SMP 299 default y 300 help 301 Support PARISC cpu topology definition. 302 303config SCHED_MC 304 bool "Multi-core scheduler support" 305 depends on PARISC_CPU_TOPOLOGY && PA8X00 306 help 307 Multi-core scheduler support improves the CPU scheduler's decision 308 making when dealing with multi-core CPU chips at a cost of slightly 309 increased overhead in some places. If unsure say N here. 310 311config IRQSTACKS 312 bool "Use separate kernel stacks when processing interrupts" 313 default y 314 help 315 If you say Y here the kernel will use separate kernel stacks 316 for handling hard and soft interrupts. This can help avoid 317 overflowing the process kernel stacks. 318 319config TLB_PTLOCK 320 bool "Use page table locks in TLB fault handler" 321 depends on SMP 322 default n 323 help 324 Select this option to enable page table locking in the TLB 325 fault handler. This ensures that page table entries are 326 updated consistently on SMP machines at the expense of some 327 loss in performance. 328 329config HOTPLUG_CPU 330 bool 331 default y if SMP 332 333config ARCH_SELECT_MEMORY_MODEL 334 def_bool y 335 depends on 64BIT 336 337config ARCH_SPARSEMEM_ENABLE 338 def_bool y 339 depends on 64BIT 340 341config ARCH_FLATMEM_ENABLE 342 def_bool y 343 344config ARCH_SPARSEMEM_DEFAULT 345 def_bool y 346 depends on ARCH_SPARSEMEM_ENABLE 347 348source "kernel/Kconfig.hz" 349 350config COMPAT 351 def_bool y 352 depends on 64BIT 353 354config SYSVIPC_COMPAT 355 def_bool y 356 depends on COMPAT && SYSVIPC 357 358config AUDIT_ARCH 359 def_bool y 360 361config NR_CPUS 362 int "Maximum number of CPUs (2-32)" 363 range 2 32 364 depends on SMP 365 default "4" 366 367config KEXEC 368 bool "Kexec system call" 369 select KEXEC_CORE 370 help 371 kexec is a system call that implements the ability to shutdown your 372 current kernel, and to start another kernel. It is like a reboot 373 but it is independent of the system firmware. And like a reboot 374 you can start any kernel with it, not just Linux. 375 376 It is an ongoing process to be certain the hardware in a machine 377 shutdown, so do not be surprised if this code does not 378 initially work for you. 379 380config KEXEC_FILE 381 bool "kexec file based system call" 382 select KEXEC_CORE 383 select KEXEC_ELF 384 help 385 This enables the kexec_file_load() System call. This is 386 file based and takes file descriptors as system call argument 387 for kernel and initramfs as opposed to list of segments as 388 accepted by previous system call. 389 390endmenu 391 392source "drivers/firmware/Kconfig" 393 394source "drivers/parisc/Kconfig" 395