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