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 ARCH_STACKWALK 17 select HAVE_RELIABLE_STACKTRACE 18 select DMA_OPS 19 select RTC_CLASS 20 select RTC_DRV_GENERIC 21 select INIT_ALL_POSSIBLE 22 select BUG 23 select BUILDTIME_TABLE_SORT 24 select HAVE_PCI 25 select HAVE_PERF_EVENTS 26 select HAVE_KERNEL_BZIP2 27 select HAVE_KERNEL_GZIP 28 select HAVE_KERNEL_LZ4 29 select HAVE_KERNEL_LZMA 30 select HAVE_KERNEL_LZO 31 select HAVE_KERNEL_XZ 32 select GENERIC_ATOMIC64 if !64BIT 33 select GENERIC_IRQ_PROBE 34 select GENERIC_PCI_IOMAP 35 select ARCH_HAVE_NMI_SAFE_CMPXCHG 36 select GENERIC_SMP_IDLE_THREAD 37 select GENERIC_CPU_DEVICES 38 select GENERIC_LIB_DEVMEM_IS_ALLOWED 39 select SYSCTL_ARCH_UNALIGN_ALLOW 40 select SYSCTL_EXCEPTION_TRACE 41 select HAVE_MOD_ARCH_SPECIFIC 42 select VIRT_TO_BUS 43 select MODULES_USE_ELF_RELA 44 select CLONE_BACKWARDS 45 select TTY # Needed for pdc_cons.c 46 select HAVE_DEBUG_STACKOVERFLOW 47 select HAVE_ARCH_AUDITSYSCALL 48 select HAVE_ARCH_HASH 49 select HAVE_ARCH_JUMP_LABEL 50 select HAVE_ARCH_JUMP_LABEL_RELATIVE 51 select HAVE_ARCH_KFENCE 52 select HAVE_ARCH_SECCOMP_FILTER 53 select HAVE_ARCH_TRACEHOOK 54 select HAVE_REGS_AND_STACK_ACCESS_API 55 select GENERIC_SCHED_CLOCK 56 select HAVE_UNSTABLE_SCHED_CLOCK if SMP 57 select LEGACY_TIMER_TICK 58 select CPU_NO_EFFICIENT_FFS 59 select THREAD_INFO_IN_TASK 60 select NEED_DMA_MAP_STATE 61 select NEED_SG_DMA_LENGTH 62 select HAVE_ARCH_KGDB 63 select HAVE_KPROBES 64 select HAVE_KRETPROBES 65 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1) 66 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE 67 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE 68 select HAVE_KPROBES_ON_FTRACE 69 select HAVE_DYNAMIC_FTRACE_WITH_REGS 70 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS 71 select TRACE_IRQFLAGS_SUPPORT 72 73 help 74 The PA-RISC microprocessor is designed by Hewlett-Packard and used 75 in many of their workstations & servers (HP9000 700 and 800 series, 76 and later HP3000 series). The PA-RISC Linux project home page is 77 at <https://parisc.wiki.kernel.org>. 78 79config CPU_BIG_ENDIAN 80 def_bool y 81 82config MMU 83 def_bool y 84 85config STACK_GROWSUP 86 def_bool y 87 88config ARCH_DEFCONFIG 89 string 90 default "arch/parisc/configs/generic-32bit_defconfig" if !64BIT 91 default "arch/parisc/configs/generic-64bit_defconfig" if 64BIT 92 93config GENERIC_LOCKBREAK 94 bool 95 default y 96 depends on SMP && PREEMPTION 97 98config ARCH_HAS_ILOG2_U32 99 bool 100 default n 101 102config ARCH_HAS_ILOG2_U64 103 bool 104 default n 105 106config GENERIC_BUG 107 bool 108 default y 109 depends on BUG 110 111config GENERIC_HWEIGHT 112 bool 113 default y 114 115config GENERIC_CALIBRATE_DELAY 116 bool 117 default y 118 119config TIME_LOW_RES 120 bool 121 depends on SMP 122 default y 123 124# unless you want to implement ACPI on PA-RISC ... ;-) 125config PM 126 bool 127 128config STACKTRACE_SUPPORT 129 def_bool y 130 131config ISA_DMA_API 132 bool 133 134config ARCH_MAY_HAVE_PC_FDC 135 bool 136 depends on BROKEN 137 default y 138 139config PGTABLE_LEVELS 140 int 141 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 142 default 2 143 144menu "Processor type and features" 145 146choice 147 prompt "Processor type" 148 default PA7000 149 150config PA7000 151 bool "PA7000/PA7100" 152 help 153 This is the processor type of your CPU. This information is 154 used for optimizing purposes. In order to compile a kernel 155 that can run on all 32-bit PA CPUs (albeit not optimally fast), 156 you can specify "PA7000" here. 157 158 Specifying "PA8000" here will allow you to select a 64-bit kernel 159 which is required on some machines. 160 161config PA7100LC 162 bool "PA7100LC" 163 help 164 Select this option for the PCX-L processor, as used in the 165 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, 166 D200, D210, D300, D310 and E-class 167 168config PA7200 169 bool "PA7200" 170 help 171 Select this option for the PCX-T' processor, as used in the 172 C100, C110, J100, J110, J210XC, D250, D260, D350, D360, 173 K100, K200, K210, K220, K400, K410 and K420 174 175config PA7300LC 176 bool "PA7300LC" 177 help 178 Select this option for the PCX-L2 processor, as used in the 179 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, 180 D220, D230, D320 and D330. 181 182config PA8X00 183 bool "PA8000 and up" 184 help 185 Select this option for PCX-U to PCX-W2 processors. 186 187endchoice 188 189# Define implied options from the CPU selection here 190 191config PA20 192 def_bool y 193 depends on PA8X00 194 195config PA11 196 def_bool y 197 depends on PA7000 || PA7100LC || PA7200 || PA7300LC 198 select ARCH_HAS_SYNC_DMA_FOR_CPU 199 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 200 201config PREFETCH 202 def_bool y 203 depends on PA8X00 || PA7200 204 205config PARISC_HUGE_KERNEL 206 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST 207 208config MLONGCALLS 209 def_bool y if PARISC_HUGE_KERNEL 210 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL 211 depends on PA8X00 212 help 213 If you configure the kernel to include many drivers built-in instead 214 as modules, the kernel executable may become too big, so that the 215 linker will not be able to resolve some long branches and fails to link 216 your vmlinux kernel. In that case enabling this option will help you 217 to overcome this limit by using the -mlong-calls compiler option. 218 219 Usually you want to say N here, unless you e.g. want to build 220 a kernel which includes all necessary drivers built-in and which can 221 be used for TFTP booting without the need to have an initrd ramdisk. 222 223 Enabling this option will probably slow down your kernel. 224 225config 64BIT 226 bool "64-bit kernel" 227 depends on PA8X00 228 help 229 Enable this if you want to support 64bit kernel on PA-RISC platform. 230 231 At the moment, only people willing to use more than 2GB of RAM, 232 or having a 64bit-only capable PA-RISC machine should say Y here. 233 234 Since there is no 64bit userland on PA-RISC, there is no point to 235 enable this option otherwise. The 64bit kernel is significantly bigger 236 and slower than the 32bit one. 237 238choice 239 prompt "Kernel page size" 240 default PARISC_PAGE_SIZE_4KB 241 242config PARISC_PAGE_SIZE_4KB 243 bool "4KB" 244 help 245 This lets you select the page size of the kernel. For best 246 performance, a page size of 16KB is recommended. For best 247 compatibility with 32bit applications, a page size of 4KB should be 248 selected (the vast majority of 32bit binaries work perfectly fine 249 with a larger page size). 250 251 4KB For best 32bit compatibility 252 16KB For best performance 253 64KB For best performance, might give more overhead. 254 255 If you don't know what to do, choose 4KB. 256 257config PARISC_PAGE_SIZE_16KB 258 bool "16KB" 259 depends on PA8X00 && BROKEN && !KFENCE 260 261config PARISC_PAGE_SIZE_64KB 262 bool "64KB" 263 depends on PA8X00 && BROKEN && !KFENCE 264 265endchoice 266 267config PARISC_SELF_EXTRACT 268 bool "Build kernel as self-extracting executable" 269 default y 270 help 271 Say Y if you want to build the parisc kernel as a kind of 272 self-extracting executable. 273 274 If you say N here, the kernel will be compressed with gzip 275 which can be loaded by the palo bootloader directly too. 276 277 If you don't know what to do here, say Y. 278 279config SMP 280 bool "Symmetric multi-processing support" 281 help 282 This enables support for systems with more than one CPU. If you have 283 a system with only one CPU, say N. If you have a system with more 284 than one CPU, say Y. 285 286 If you say N here, the kernel will run on uni- and multiprocessor 287 machines, but will use only one CPU of a multiprocessor machine. 288 On a uniprocessor machine, the kernel will run faster if you say N. 289 290 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 291 available at <https://www.tldp.org/docs.html#howto>. 292 293 If you don't know what to do here, say N. 294 295config TOC 296 bool "Support TOC switch" 297 default y if 64BIT || !SMP 298 help 299 Most PA-RISC machines have either a switch at the back of the machine 300 or a command in BMC to trigger a TOC interrupt. If you say Y here a 301 handler will be installed which will either show a backtrace on all 302 CPUs, or enter a possible configured debugger like kgdb/kdb. 303 304 Note that with this option enabled, the kernel will use an additional 16KB 305 per possible CPU as a special stack for the TOC handler. 306 307 If you don't want to debug the Kernel, say N. 308 309config PARISC_CPU_TOPOLOGY 310 bool "Support cpu topology definition" 311 depends on SMP 312 default y 313 help 314 Support PARISC cpu topology definition. 315 316config SCHED_MC 317 bool "Multi-core scheduler support" 318 depends on PARISC_CPU_TOPOLOGY && PA8X00 319 help 320 Multi-core scheduler support improves the CPU scheduler's decision 321 making when dealing with multi-core CPU chips at a cost of slightly 322 increased overhead in some places. If unsure say N here. 323 324config IRQSTACKS 325 bool "Use separate kernel stacks when processing interrupts" 326 default y 327 help 328 If you say Y here the kernel will use separate kernel stacks 329 for handling hard and soft interrupts. This can help avoid 330 overflowing the process kernel stacks. 331 332config TLB_PTLOCK 333 bool "Use page table locks in TLB fault handler" 334 depends on SMP 335 default n 336 help 337 Select this option to enable page table locking in the TLB 338 fault handler. This ensures that page table entries are 339 updated consistently on SMP machines at the expense of some 340 loss in performance. 341 342config HOTPLUG_CPU 343 bool 344 default y if SMP 345 346config ARCH_SELECT_MEMORY_MODEL 347 def_bool y 348 depends on 64BIT 349 350config ARCH_SPARSEMEM_ENABLE 351 def_bool y 352 depends on 64BIT 353 354config ARCH_FLATMEM_ENABLE 355 def_bool y 356 357config ARCH_SPARSEMEM_DEFAULT 358 def_bool y 359 depends on ARCH_SPARSEMEM_ENABLE 360 361source "kernel/Kconfig.hz" 362 363config COMPAT 364 def_bool y 365 depends on 64BIT 366 367config SYSVIPC_COMPAT 368 def_bool y 369 depends on COMPAT && SYSVIPC 370 371config AUDIT_ARCH 372 def_bool y 373 374config NR_CPUS 375 int "Maximum number of CPUs (2-32)" 376 range 2 32 377 depends on SMP 378 default "4" 379 380config KEXEC 381 bool "Kexec system call" 382 select KEXEC_CORE 383 help 384 kexec is a system call that implements the ability to shutdown your 385 current kernel, and to start another kernel. It is like a reboot 386 but it is independent of the system firmware. And like a reboot 387 you can start any kernel with it, not just Linux. 388 389 It is an ongoing process to be certain the hardware in a machine 390 shutdown, so do not be surprised if this code does not 391 initially work for you. 392 393config KEXEC_FILE 394 bool "kexec file based system call" 395 select KEXEC_CORE 396 select KEXEC_ELF 397 help 398 This enables the kexec_file_load() System call. This is 399 file based and takes file descriptors as system call argument 400 for kernel and initramfs as opposed to list of segments as 401 accepted by previous system call. 402 403endmenu 404 405source "drivers/parisc/Kconfig" 406