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 select HAVE_FUNCTION_DESCRIPTORS if 64BIT 76 77 help 78 The PA-RISC microprocessor is designed by Hewlett-Packard and used 79 in many of their workstations & servers (HP9000 700 and 800 series, 80 and later HP3000 series). The PA-RISC Linux project home page is 81 at <https://parisc.wiki.kernel.org>. 82 83config CPU_BIG_ENDIAN 84 def_bool y 85 86config MMU 87 def_bool y 88 89config STACK_GROWSUP 90 def_bool y 91 92config GENERIC_LOCKBREAK 93 bool 94 default y 95 depends on SMP && PREEMPTION 96 97config ARCH_HAS_ILOG2_U32 98 bool 99 default n 100 101config ARCH_HAS_ILOG2_U64 102 bool 103 default n 104 105config GENERIC_BUG 106 bool 107 default y 108 depends on BUG 109 110config GENERIC_HWEIGHT 111 bool 112 default y 113 114config GENERIC_CALIBRATE_DELAY 115 bool 116 default y 117 118config TIME_LOW_RES 119 bool 120 depends on SMP 121 default y 122 123# unless you want to implement ACPI on PA-RISC ... ;-) 124config PM 125 bool 126 127config STACKTRACE_SUPPORT 128 def_bool y 129 130config ISA_DMA_API 131 bool 132 133config ARCH_MAY_HAVE_PC_FDC 134 bool 135 depends on BROKEN 136 default y 137 138config PGTABLE_LEVELS 139 int 140 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 141 default 2 142 143menu "Processor type and features" 144 145choice 146 prompt "Processor type" 147 default PA7000 148 149config PA7000 150 bool "PA7000/PA7100" 151 help 152 This is the processor type of your CPU. This information is 153 used for optimizing purposes. In order to compile a kernel 154 that can run on all 32-bit PA CPUs (albeit not optimally fast), 155 you can specify "PA7000" here. 156 157 Specifying "PA8000" here will allow you to select a 64-bit kernel 158 which is required on some machines. 159 160config PA7100LC 161 bool "PA7100LC" 162 help 163 Select this option for the PCX-L processor, as used in the 164 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, 165 D200, D210, D300, D310 and E-class 166 167config PA7200 168 bool "PA7200" 169 help 170 Select this option for the PCX-T' processor, as used in the 171 C100, C110, J100, J110, J210XC, D250, D260, D350, D360, 172 K100, K200, K210, K220, K400, K410 and K420 173 174config PA7300LC 175 bool "PA7300LC" 176 help 177 Select this option for the PCX-L2 processor, as used in the 178 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, 179 D220, D230, D320 and D330. 180 181config PA8X00 182 bool "PA8000 and up" 183 help 184 Select this option for PCX-U to PCX-W2 processors. 185 186endchoice 187 188# Define implied options from the CPU selection here 189 190config PA20 191 def_bool y 192 depends on PA8X00 193 194config PA11 195 def_bool y 196 depends on PA7000 || PA7100LC || PA7200 || PA7300LC 197 select ARCH_HAS_SYNC_DMA_FOR_CPU 198 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 199 200config PREFETCH 201 def_bool y 202 depends on PA8X00 || PA7200 203 204config PARISC_HUGE_KERNEL 205 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST 206 207config MLONGCALLS 208 def_bool y if PARISC_HUGE_KERNEL 209 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL 210 depends on PA8X00 211 help 212 If you configure the kernel to include many drivers built-in instead 213 as modules, the kernel executable may become too big, so that the 214 linker will not be able to resolve some long branches and fails to link 215 your vmlinux kernel. In that case enabling this option will help you 216 to overcome this limit by using the -mlong-calls compiler option. 217 218 Usually you want to say N here, unless you e.g. want to build 219 a kernel which includes all necessary drivers built-in and which can 220 be used for TFTP booting without the need to have an initrd ramdisk. 221 222 Enabling this option will probably slow down your kernel. 223 224config 64BIT 225 bool "64-bit kernel" 226 depends on PA8X00 227 help 228 Enable this if you want to support 64bit kernel on PA-RISC platform. 229 230 At the moment, only people willing to use more than 2GB of RAM, 231 or having a 64bit-only capable PA-RISC machine should say Y here. 232 233 Since there is no 64bit userland on PA-RISC, there is no point to 234 enable this option otherwise. The 64bit kernel is significantly bigger 235 and slower than the 32bit one. 236 237choice 238 prompt "Kernel page size" 239 default PARISC_PAGE_SIZE_4KB 240 241config PARISC_PAGE_SIZE_4KB 242 bool "4KB" 243 help 244 This lets you select the page size of the kernel. For best 245 performance, a page size of 16KB is recommended. For best 246 compatibility with 32bit applications, a page size of 4KB should be 247 selected (the vast majority of 32bit binaries work perfectly fine 248 with a larger page size). 249 250 4KB For best 32bit compatibility 251 16KB For best performance 252 64KB For best performance, might give more overhead. 253 254 If you don't know what to do, choose 4KB. 255 256config PARISC_PAGE_SIZE_16KB 257 bool "16KB" 258 depends on PA8X00 && BROKEN && !KFENCE 259 260config PARISC_PAGE_SIZE_64KB 261 bool "64KB" 262 depends on PA8X00 && BROKEN && !KFENCE 263 264endchoice 265 266config SMP 267 bool "Symmetric multi-processing support" 268 help 269 This enables support for systems with more than one CPU. If you have 270 a system with only one CPU, say N. If you have a system with more 271 than one CPU, say Y. 272 273 If you say N here, the kernel will run on uni- and multiprocessor 274 machines, but will use only one CPU of a multiprocessor machine. 275 On a uniprocessor machine, the kernel will run faster if you say N. 276 277 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 278 available at <https://www.tldp.org/docs.html#howto>. 279 280 If you don't know what to do here, say N. 281 282config PARISC_CPU_TOPOLOGY 283 bool "Support cpu topology definition" 284 depends on SMP 285 default y 286 help 287 Support PARISC cpu topology definition. 288 289config SCHED_MC 290 bool "Multi-core scheduler support" 291 depends on PARISC_CPU_TOPOLOGY && PA8X00 292 help 293 Multi-core scheduler support improves the CPU scheduler's decision 294 making when dealing with multi-core CPU chips at a cost of slightly 295 increased overhead in some places. If unsure say N here. 296 297config IRQSTACKS 298 bool "Use separate kernel stacks when processing interrupts" 299 default y 300 help 301 If you say Y here the kernel will use separate kernel stacks 302 for handling hard and soft interrupts. This can help avoid 303 overflowing the process kernel stacks. 304 305config TLB_PTLOCK 306 bool "Use page table locks in TLB fault handler" 307 depends on SMP 308 default n 309 help 310 Select this option to enable page table locking in the TLB 311 fault handler. This ensures that page table entries are 312 updated consistently on SMP machines at the expense of some 313 loss in performance. 314 315config HOTPLUG_CPU 316 bool 317 default y if SMP 318 319config ARCH_SELECT_MEMORY_MODEL 320 def_bool y 321 depends on 64BIT 322 323config ARCH_SPARSEMEM_ENABLE 324 def_bool y 325 depends on 64BIT 326 327config ARCH_FLATMEM_ENABLE 328 def_bool y 329 330config ARCH_SPARSEMEM_DEFAULT 331 def_bool y 332 depends on ARCH_SPARSEMEM_ENABLE 333 334source "kernel/Kconfig.hz" 335 336config COMPAT 337 def_bool y 338 depends on 64BIT 339 340config SYSVIPC_COMPAT 341 def_bool y 342 depends on COMPAT && SYSVIPC 343 344config AUDIT_ARCH 345 def_bool y 346 347config NR_CPUS 348 int "Maximum number of CPUs (2-32)" 349 range 2 32 350 depends on SMP 351 default "4" if 64BIT 352 default "16" 353 354config KEXEC 355 bool "Kexec system call" 356 select KEXEC_CORE 357 help 358 kexec is a system call that implements the ability to shutdown your 359 current kernel, and to start another kernel. It is like a reboot 360 but it is independent of the system firmware. And like a reboot 361 you can start any kernel with it, not just Linux. 362 363 It is an ongoing process to be certain the hardware in a machine 364 shutdown, so do not be surprised if this code does not 365 initially work for you. 366 367config KEXEC_FILE 368 bool "kexec file based system call" 369 select KEXEC_CORE 370 select KEXEC_ELF 371 help 372 This enables the kexec_file_load() System call. This is 373 file based and takes file descriptors as system call argument 374 for kernel and initramfs as opposed to list of segments as 375 accepted by previous system call. 376 377endmenu 378 379source "drivers/parisc/Kconfig" 380