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_FUNCTION_TRACER 7 select HAVE_FUNCTION_GRAPH_TRACER 8 select HAVE_SYSCALL_TRACEPOINTS 9 select ARCH_WANT_FRAME_POINTERS 10 select ARCH_HAS_ELF_RANDOMIZE 11 select ARCH_HAS_STRICT_KERNEL_RWX 12 select ARCH_HAS_UBSAN_SANITIZE_ALL 13 select ARCH_NO_SG_CHAIN 14 select ARCH_SUPPORTS_HUGETLBFS if PA20 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 141menu "Processor type and features" 142 143choice 144 prompt "Processor type" 145 default PA7000 146 147config PA7000 148 bool "PA7000/PA7100" 149 help 150 This is the processor type of your CPU. This information is 151 used for optimizing purposes. In order to compile a kernel 152 that can run on all 32-bit PA CPUs (albeit not optimally fast), 153 you can specify "PA7000" here. 154 155 Specifying "PA8000" here will allow you to select a 64-bit kernel 156 which is required on some machines. 157 158config PA7100LC 159 bool "PA7100LC" 160 help 161 Select this option for the PCX-L processor, as used in the 162 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, 163 D200, D210, D300, D310 and E-class 164 165config PA7200 166 bool "PA7200" 167 help 168 Select this option for the PCX-T' processor, as used in the 169 C100, C110, J100, J110, J210XC, D250, D260, D350, D360, 170 K100, K200, K210, K220, K400, K410 and K420 171 172config PA7300LC 173 bool "PA7300LC" 174 help 175 Select this option for the PCX-L2 processor, as used in the 176 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, 177 D220, D230, D320 and D330. 178 179config PA8X00 180 bool "PA8000 and up" 181 help 182 Select this option for PCX-U to PCX-W2 processors. 183 184endchoice 185 186# Define implied options from the CPU selection here 187 188config PA20 189 def_bool y 190 depends on PA8X00 191 192config PA11 193 def_bool y 194 depends on PA7000 || PA7100LC || PA7200 || PA7300LC 195 select ARCH_HAS_SYNC_DMA_FOR_CPU 196 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 197 198config PREFETCH 199 def_bool y 200 depends on PA8X00 || PA7200 201 202config PARISC_HUGE_KERNEL 203 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST 204 205config MLONGCALLS 206 def_bool y if PARISC_HUGE_KERNEL 207 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL 208 depends on PA8X00 209 help 210 If you configure the kernel to include many drivers built-in instead 211 as modules, the kernel executable may become too big, so that the 212 linker will not be able to resolve some long branches and fails to link 213 your vmlinux kernel. In that case enabling this option will help you 214 to overcome this limit by using the -mlong-calls compiler option. 215 216 Usually you want to say N here, unless you e.g. want to build 217 a kernel which includes all necessary drivers built-in and which can 218 be used for TFTP booting without the need to have an initrd ramdisk. 219 220 Enabling this option will probably slow down your kernel. 221 222config 64BIT 223 bool "64-bit kernel" 224 depends on PA8X00 225 help 226 Enable this if you want to support 64bit kernel on PA-RISC platform. 227 228 At the moment, only people willing to use more than 2GB of RAM, 229 or having a 64bit-only capable PA-RISC machine should say Y here. 230 231 Since there is no 64bit userland on PA-RISC, there is no point to 232 enable this option otherwise. The 64bit kernel is significantly bigger 233 and slower than the 32bit one. 234 235choice 236 prompt "Kernel page size" 237 default PARISC_PAGE_SIZE_4KB 238 239config PARISC_PAGE_SIZE_4KB 240 bool "4KB" 241 help 242 This lets you select the page size of the kernel. For best 243 performance, a page size of 16KB is recommended. For best 244 compatibility with 32bit applications, a page size of 4KB should be 245 selected (the vast majority of 32bit binaries work perfectly fine 246 with a larger page size). 247 248 4KB For best 32bit compatibility 249 16KB For best performance 250 64KB For best performance, might give more overhead. 251 252 If you don't know what to do, choose 4KB. 253 254config PARISC_PAGE_SIZE_16KB 255 bool "16KB" 256 depends on PA8X00 && BROKEN 257 258config PARISC_PAGE_SIZE_64KB 259 bool "64KB" 260 depends on PA8X00 && BROKEN 261 262endchoice 263 264config PARISC_SELF_EXTRACT 265 bool "Build kernel as self-extracting executable" 266 default y 267 help 268 Say Y if you want to build the parisc kernel as a kind of 269 self-extracting executable. 270 271 If you say N here, the kernel will be compressed with gzip 272 which can be loaded by the palo bootloader directly too. 273 274 If you don't know what to do here, say Y. 275 276config SMP 277 bool "Symmetric multi-processing support" 278 help 279 This enables support for systems with more than one CPU. If you have 280 a system with only one CPU, say N. If you have a system with more 281 than one CPU, say Y. 282 283 If you say N here, the kernel will run on uni- and multiprocessor 284 machines, but will use only one CPU of a multiprocessor machine. 285 On a uniprocessor machine, the kernel will run faster if you say N. 286 287 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 288 available at <https://www.tldp.org/docs.html#howto>. 289 290 If you don't know what to do here, say N. 291 292config PARISC_CPU_TOPOLOGY 293 bool "Support cpu topology definition" 294 depends on SMP 295 default y 296 help 297 Support PARISC cpu topology definition. 298 299config SCHED_MC 300 bool "Multi-core scheduler support" 301 depends on PARISC_CPU_TOPOLOGY && PA8X00 302 help 303 Multi-core scheduler support improves the CPU scheduler's decision 304 making when dealing with multi-core CPU chips at a cost of slightly 305 increased overhead in some places. If unsure say N here. 306 307config IRQSTACKS 308 bool "Use separate kernel stacks when processing interrupts" 309 default y 310 help 311 If you say Y here the kernel will use separate kernel stacks 312 for handling hard and soft interrupts. This can help avoid 313 overflowing the process kernel stacks. 314 315config TLB_PTLOCK 316 bool "Use page table locks in TLB fault handler" 317 depends on SMP 318 default n 319 help 320 Select this option to enable page table locking in the TLB 321 fault handler. This ensures that page table entries are 322 updated consistently on SMP machines at the expense of some 323 loss in performance. 324 325config HOTPLUG_CPU 326 bool 327 default y if SMP 328 329config ARCH_SELECT_MEMORY_MODEL 330 def_bool y 331 depends on 64BIT 332 333config ARCH_SPARSEMEM_ENABLE 334 def_bool y 335 depends on 64BIT 336 337config ARCH_FLATMEM_ENABLE 338 def_bool y 339 340config ARCH_SPARSEMEM_DEFAULT 341 def_bool y 342 depends on ARCH_SPARSEMEM_ENABLE 343 344source "kernel/Kconfig.hz" 345 346config COMPAT 347 def_bool y 348 depends on 64BIT 349 350config SYSVIPC_COMPAT 351 def_bool y 352 depends on COMPAT && SYSVIPC 353 354config AUDIT_ARCH 355 def_bool y 356 357config NR_CPUS 358 int "Maximum number of CPUs (2-32)" 359 range 2 32 360 depends on SMP 361 default "4" 362 363config KEXEC 364 bool "Kexec system call" 365 select KEXEC_CORE 366 help 367 kexec is a system call that implements the ability to shutdown your 368 current kernel, and to start another kernel. It is like a reboot 369 but it is independent of the system firmware. And like a reboot 370 you can start any kernel with it, not just Linux. 371 372 It is an ongoing process to be certain the hardware in a machine 373 shutdown, so do not be surprised if this code does not 374 initially work for you. 375 376config KEXEC_FILE 377 bool "kexec file based system call" 378 select KEXEC_CORE 379 select KEXEC_ELF 380 help 381 This enables the kexec_file_load() System call. This is 382 file based and takes file descriptors as system call argument 383 for kernel and initramfs as opposed to list of segments as 384 accepted by previous system call. 385 386endmenu 387 388source "drivers/firmware/Kconfig" 389 390source "drivers/parisc/Kconfig" 391