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_STRICT_MODULE_RWX 14 select ARCH_HAS_UBSAN_SANITIZE_ALL 15 select ARCH_HAS_PTE_SPECIAL 16 select ARCH_NO_SG_CHAIN 17 select ARCH_SUPPORTS_HUGETLBFS if PA20 18 select ARCH_SUPPORTS_MEMORY_FAILURE 19 select ARCH_STACKWALK 20 select ARCH_HAS_DEBUG_VM_PGTABLE 21 select HAVE_RELIABLE_STACKTRACE 22 select DMA_OPS 23 select RTC_CLASS 24 select RTC_DRV_GENERIC 25 select INIT_ALL_POSSIBLE 26 select BUG 27 select BUILDTIME_TABLE_SORT 28 select HAVE_PCI 29 select HAVE_PERF_EVENTS 30 select HAVE_KERNEL_BZIP2 31 select HAVE_KERNEL_GZIP 32 select HAVE_KERNEL_LZ4 33 select HAVE_KERNEL_LZMA 34 select HAVE_KERNEL_LZO 35 select HAVE_KERNEL_XZ 36 select GENERIC_ATOMIC64 if !64BIT 37 select GENERIC_IRQ_PROBE 38 select GENERIC_PCI_IOMAP 39 select ARCH_HAVE_NMI_SAFE_CMPXCHG 40 select GENERIC_SMP_IDLE_THREAD 41 select GENERIC_ARCH_TOPOLOGY if SMP 42 select GENERIC_CPU_DEVICES if !SMP 43 select GENERIC_LIB_DEVMEM_IS_ALLOWED 44 select SYSCTL_ARCH_UNALIGN_ALLOW 45 select SYSCTL_EXCEPTION_TRACE 46 select HAVE_MOD_ARCH_SPECIFIC 47 select MODULES_USE_ELF_RELA 48 select CLONE_BACKWARDS 49 select TTY # Needed for pdc_cons.c 50 select HAVE_DEBUG_STACKOVERFLOW 51 select HAVE_ARCH_AUDITSYSCALL 52 select HAVE_ARCH_HASH 53 select HAVE_ARCH_JUMP_LABEL 54 select HAVE_ARCH_JUMP_LABEL_RELATIVE 55 select HAVE_ARCH_KFENCE 56 select HAVE_ARCH_SECCOMP_FILTER 57 select HAVE_ARCH_TRACEHOOK 58 select HAVE_REGS_AND_STACK_ACCESS_API 59 select GENERIC_SCHED_CLOCK 60 select GENERIC_IRQ_MIGRATION if SMP 61 select HAVE_UNSTABLE_SCHED_CLOCK if SMP 62 select LEGACY_TIMER_TICK 63 select CPU_NO_EFFICIENT_FFS 64 select THREAD_INFO_IN_TASK 65 select NEED_DMA_MAP_STATE 66 select NEED_SG_DMA_LENGTH 67 select HAVE_ARCH_KGDB 68 select HAVE_KPROBES 69 select HAVE_KRETPROBES 70 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1) 71 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE 72 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE 73 select HAVE_KPROBES_ON_FTRACE 74 select HAVE_DYNAMIC_FTRACE_WITH_REGS 75 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS 76 select TRACE_IRQFLAGS_SUPPORT 77 select HAVE_FUNCTION_DESCRIPTORS if 64BIT 78 79 help 80 The PA-RISC microprocessor is designed by Hewlett-Packard and used 81 in many of their workstations & servers (HP9000 700 and 800 series, 82 and later HP3000 series). The PA-RISC Linux project home page is 83 at <https://parisc.wiki.kernel.org>. 84 85config CPU_BIG_ENDIAN 86 def_bool y 87 88config MMU 89 def_bool y 90 91config STACK_GROWSUP 92 def_bool y 93 94config GENERIC_LOCKBREAK 95 bool 96 default y 97 depends on SMP && PREEMPTION 98 99config ARCH_HAS_ILOG2_U32 100 bool 101 default n 102 103config ARCH_HAS_ILOG2_U64 104 bool 105 default n 106 107config GENERIC_BUG 108 bool 109 default y 110 depends on BUG 111 112config GENERIC_HWEIGHT 113 bool 114 default y 115 116config GENERIC_CALIBRATE_DELAY 117 bool 118 default y 119 120config TIME_LOW_RES 121 bool 122 depends on SMP 123 default y 124 125# unless you want to implement ACPI on PA-RISC ... ;-) 126config PM 127 bool 128 129config STACKTRACE_SUPPORT 130 def_bool y 131 132config ISA_DMA_API 133 bool 134 135config ARCH_MAY_HAVE_PC_FDC 136 bool 137 depends on BROKEN 138 default y 139 140config PGTABLE_LEVELS 141 int 142 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 143 default 2 144 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 && !KFENCE 261 262config PARISC_PAGE_SIZE_64KB 263 bool "64KB" 264 depends on PA8X00 && BROKEN && !KFENCE 265 266endchoice 267 268config SMP 269 bool "Symmetric multi-processing support" 270 help 271 This enables support for systems with more than one CPU. If you have 272 a system with only one CPU, say N. If you have a system with more 273 than one CPU, say Y. 274 275 If you say N here, the kernel will run on uni- and multiprocessor 276 machines, but will use only one CPU of a multiprocessor machine. 277 On a uniprocessor machine, the kernel will run faster if you say N. 278 279 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 280 available at <https://www.tldp.org/docs.html#howto>. 281 282 If you don't know what to do here, say N. 283 284config SCHED_MC 285 bool "Multi-core scheduler support" 286 depends on GENERIC_ARCH_TOPOLOGY && PA8X00 287 help 288 Multi-core scheduler support improves the CPU scheduler's decision 289 making when dealing with multi-core CPU chips at a cost of slightly 290 increased overhead in some places. If unsure say N here. 291 292config IRQSTACKS 293 bool "Use separate kernel stacks when processing interrupts" 294 default y 295 help 296 If you say Y here the kernel will use separate kernel stacks 297 for handling hard and soft interrupts. This can help avoid 298 overflowing the process kernel stacks. 299 300config TLB_PTLOCK 301 bool "Use page table locks in TLB fault handler" 302 depends on SMP 303 default n 304 help 305 Select this option to enable page table locking in the TLB 306 fault handler. This ensures that page table entries are 307 updated consistently on SMP machines at the expense of some 308 loss in performance. 309 310config HOTPLUG_CPU 311 bool 312 default y if SMP 313 314config ARCH_SELECT_MEMORY_MODEL 315 def_bool y 316 depends on 64BIT 317 318config ARCH_SPARSEMEM_ENABLE 319 def_bool y 320 depends on 64BIT 321 322config ARCH_FLATMEM_ENABLE 323 def_bool y 324 325config ARCH_SPARSEMEM_DEFAULT 326 def_bool y 327 depends on ARCH_SPARSEMEM_ENABLE 328 329source "kernel/Kconfig.hz" 330 331config COMPAT 332 def_bool y 333 depends on 64BIT 334 335config AUDIT_ARCH 336 def_bool y 337 338config NR_CPUS 339 int "Maximum number of CPUs (2-32)" 340 range 2 32 341 depends on SMP 342 default "4" if 64BIT 343 default "16" 344 345config KEXEC 346 bool "Kexec system call" 347 select KEXEC_CORE 348 help 349 kexec is a system call that implements the ability to shutdown your 350 current kernel, and to start another kernel. It is like a reboot 351 but it is independent of the system firmware. And like a reboot 352 you can start any kernel with it, not just Linux. 353 354 It is an ongoing process to be certain the hardware in a machine 355 shutdown, so do not be surprised if this code does not 356 initially work for you. 357 358config KEXEC_FILE 359 bool "kexec file based system call" 360 select KEXEC_CORE 361 select KEXEC_ELF 362 help 363 This enables the kexec_file_load() System call. This is 364 file based and takes file descriptors as system call argument 365 for kernel and initramfs as opposed to list of segments as 366 accepted by previous system call. 367 368endmenu 369 370source "drivers/parisc/Kconfig" 371