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 GENERIC_LOCKBREAK 89 bool 90 default y 91 depends on SMP && PREEMPTION 92 93config ARCH_HAS_ILOG2_U32 94 bool 95 default n 96 97config ARCH_HAS_ILOG2_U64 98 bool 99 default n 100 101config GENERIC_BUG 102 bool 103 default y 104 depends on BUG 105 106config GENERIC_HWEIGHT 107 bool 108 default y 109 110config GENERIC_CALIBRATE_DELAY 111 bool 112 default y 113 114config TIME_LOW_RES 115 bool 116 depends on SMP 117 default y 118 119# unless you want to implement ACPI on PA-RISC ... ;-) 120config PM 121 bool 122 123config STACKTRACE_SUPPORT 124 def_bool y 125 126config ISA_DMA_API 127 bool 128 129config ARCH_MAY_HAVE_PC_FDC 130 bool 131 depends on BROKEN 132 default y 133 134config PGTABLE_LEVELS 135 int 136 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 137 default 2 138 139menu "Processor type and features" 140 141choice 142 prompt "Processor type" 143 default PA7000 144 145config PA7000 146 bool "PA7000/PA7100" 147 help 148 This is the processor type of your CPU. This information is 149 used for optimizing purposes. In order to compile a kernel 150 that can run on all 32-bit PA CPUs (albeit not optimally fast), 151 you can specify "PA7000" here. 152 153 Specifying "PA8000" here will allow you to select a 64-bit kernel 154 which is required on some machines. 155 156config PA7100LC 157 bool "PA7100LC" 158 help 159 Select this option for the PCX-L processor, as used in the 160 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, 161 D200, D210, D300, D310 and E-class 162 163config PA7200 164 bool "PA7200" 165 help 166 Select this option for the PCX-T' processor, as used in the 167 C100, C110, J100, J110, J210XC, D250, D260, D350, D360, 168 K100, K200, K210, K220, K400, K410 and K420 169 170config PA7300LC 171 bool "PA7300LC" 172 help 173 Select this option for the PCX-L2 processor, as used in the 174 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, 175 D220, D230, D320 and D330. 176 177config PA8X00 178 bool "PA8000 and up" 179 help 180 Select this option for PCX-U to PCX-W2 processors. 181 182endchoice 183 184# Define implied options from the CPU selection here 185 186config PA20 187 def_bool y 188 depends on PA8X00 189 190config PA11 191 def_bool y 192 depends on PA7000 || PA7100LC || PA7200 || PA7300LC 193 select ARCH_HAS_SYNC_DMA_FOR_CPU 194 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 195 196config PREFETCH 197 def_bool y 198 depends on PA8X00 || PA7200 199 200config PARISC_HUGE_KERNEL 201 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST 202 203config MLONGCALLS 204 def_bool y if PARISC_HUGE_KERNEL 205 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL 206 depends on PA8X00 207 help 208 If you configure the kernel to include many drivers built-in instead 209 as modules, the kernel executable may become too big, so that the 210 linker will not be able to resolve some long branches and fails to link 211 your vmlinux kernel. In that case enabling this option will help you 212 to overcome this limit by using the -mlong-calls compiler option. 213 214 Usually you want to say N here, unless you e.g. want to build 215 a kernel which includes all necessary drivers built-in and which can 216 be used for TFTP booting without the need to have an initrd ramdisk. 217 218 Enabling this option will probably slow down your kernel. 219 220config 64BIT 221 bool "64-bit kernel" 222 depends on PA8X00 223 help 224 Enable this if you want to support 64bit kernel on PA-RISC platform. 225 226 At the moment, only people willing to use more than 2GB of RAM, 227 or having a 64bit-only capable PA-RISC machine should say Y here. 228 229 Since there is no 64bit userland on PA-RISC, there is no point to 230 enable this option otherwise. The 64bit kernel is significantly bigger 231 and slower than the 32bit one. 232 233choice 234 prompt "Kernel page size" 235 default PARISC_PAGE_SIZE_4KB 236 237config PARISC_PAGE_SIZE_4KB 238 bool "4KB" 239 help 240 This lets you select the page size of the kernel. For best 241 performance, a page size of 16KB is recommended. For best 242 compatibility with 32bit applications, a page size of 4KB should be 243 selected (the vast majority of 32bit binaries work perfectly fine 244 with a larger page size). 245 246 4KB For best 32bit compatibility 247 16KB For best performance 248 64KB For best performance, might give more overhead. 249 250 If you don't know what to do, choose 4KB. 251 252config PARISC_PAGE_SIZE_16KB 253 bool "16KB" 254 depends on PA8X00 && BROKEN && !KFENCE 255 256config PARISC_PAGE_SIZE_64KB 257 bool "64KB" 258 depends on PA8X00 && BROKEN && !KFENCE 259 260endchoice 261 262config PARISC_SELF_EXTRACT 263 bool "Build kernel as self-extracting executable" 264 default y 265 help 266 Say Y if you want to build the parisc kernel as a kind of 267 self-extracting executable. 268 269 If you say N here, the kernel will be compressed with gzip 270 which can be loaded by the palo bootloader directly too. 271 272 If you don't know what to do here, say Y. 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 TOC 291 bool "Support TOC switch" 292 default y if 64BIT || !SMP 293 help 294 Most PA-RISC machines have either a switch at the back of the machine 295 or a command in BMC to trigger a TOC interrupt. If you say Y here a 296 handler will be installed which will either show a backtrace on all 297 CPUs, or enter a possible configured debugger like kgdb/kdb. 298 299 Note that with this option enabled, the kernel will use an additional 16KB 300 per possible CPU as a special stack for the TOC handler. 301 302 If you don't want to debug the Kernel, say N. 303 304config PARISC_CPU_TOPOLOGY 305 bool "Support cpu topology definition" 306 depends on SMP 307 default y 308 help 309 Support PARISC cpu topology definition. 310 311config SCHED_MC 312 bool "Multi-core scheduler support" 313 depends on PARISC_CPU_TOPOLOGY && PA8X00 314 help 315 Multi-core scheduler support improves the CPU scheduler's decision 316 making when dealing with multi-core CPU chips at a cost of slightly 317 increased overhead in some places. If unsure say N here. 318 319config IRQSTACKS 320 bool "Use separate kernel stacks when processing interrupts" 321 default y 322 help 323 If you say Y here the kernel will use separate kernel stacks 324 for handling hard and soft interrupts. This can help avoid 325 overflowing the process kernel stacks. 326 327config TLB_PTLOCK 328 bool "Use page table locks in TLB fault handler" 329 depends on SMP 330 default n 331 help 332 Select this option to enable page table locking in the TLB 333 fault handler. This ensures that page table entries are 334 updated consistently on SMP machines at the expense of some 335 loss in performance. 336 337config HOTPLUG_CPU 338 bool 339 default y if SMP 340 341config ARCH_SELECT_MEMORY_MODEL 342 def_bool y 343 depends on 64BIT 344 345config ARCH_SPARSEMEM_ENABLE 346 def_bool y 347 depends on 64BIT 348 349config ARCH_FLATMEM_ENABLE 350 def_bool y 351 352config ARCH_SPARSEMEM_DEFAULT 353 def_bool y 354 depends on ARCH_SPARSEMEM_ENABLE 355 356source "kernel/Kconfig.hz" 357 358config COMPAT 359 def_bool y 360 depends on 64BIT 361 362config SYSVIPC_COMPAT 363 def_bool y 364 depends on COMPAT && SYSVIPC 365 366config AUDIT_ARCH 367 def_bool y 368 369config NR_CPUS 370 int "Maximum number of CPUs (2-32)" 371 range 2 32 372 depends on SMP 373 default "4" 374 375config KEXEC 376 bool "Kexec system call" 377 select KEXEC_CORE 378 help 379 kexec is a system call that implements the ability to shutdown your 380 current kernel, and to start another kernel. It is like a reboot 381 but it is independent of the system firmware. And like a reboot 382 you can start any kernel with it, not just Linux. 383 384 It is an ongoing process to be certain the hardware in a machine 385 shutdown, so do not be surprised if this code does not 386 initially work for you. 387 388config KEXEC_FILE 389 bool "kexec file based system call" 390 select KEXEC_CORE 391 select KEXEC_ELF 392 help 393 This enables the kexec_file_load() System call. This is 394 file based and takes file descriptors as system call argument 395 for kernel and initramfs as opposed to list of segments as 396 accepted by previous system call. 397 398endmenu 399 400source "drivers/parisc/Kconfig" 401