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