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_IDE 7 select HAVE_OPROFILE 8 select HAVE_FUNCTION_TRACER 9 select HAVE_FUNCTION_GRAPH_TRACER 10 select HAVE_SYSCALL_TRACEPOINTS 11 select ARCH_WANT_FRAME_POINTERS 12 select ARCH_HAS_ELF_RANDOMIZE 13 select ARCH_HAS_STRICT_KERNEL_RWX 14 select ARCH_HAS_UBSAN_SANITIZE_ALL 15 select ARCH_NO_SG_CHAIN 16 select ARCH_SUPPORTS_MEMORY_FAILURE 17 select DMA_OPS 18 select RTC_CLASS 19 select RTC_DRV_GENERIC 20 select INIT_ALL_POSSIBLE 21 select BUG 22 select BUILDTIME_TABLE_SORT 23 select HAVE_PCI 24 select HAVE_PERF_EVENTS 25 select HAVE_KERNEL_BZIP2 26 select HAVE_KERNEL_GZIP 27 select HAVE_KERNEL_LZ4 28 select HAVE_KERNEL_LZMA 29 select HAVE_KERNEL_LZO 30 select HAVE_KERNEL_XZ 31 select GENERIC_ATOMIC64 if !64BIT 32 select GENERIC_IRQ_PROBE 33 select GENERIC_PCI_IOMAP 34 select ARCH_HAVE_NMI_SAFE_CMPXCHG 35 select GENERIC_SMP_IDLE_THREAD 36 select GENERIC_CPU_DEVICES 37 select GENERIC_STRNCPY_FROM_USER 38 select SYSCTL_ARCH_UNALIGN_ALLOW 39 select SYSCTL_EXCEPTION_TRACE 40 select HAVE_MOD_ARCH_SPECIFIC 41 select VIRT_TO_BUS 42 select MODULES_USE_ELF_RELA 43 select CLONE_BACKWARDS 44 select TTY # Needed for pdc_cons.c 45 select HAVE_DEBUG_STACKOVERFLOW 46 select HAVE_ARCH_AUDITSYSCALL 47 select HAVE_ARCH_HASH 48 select HAVE_ARCH_JUMP_LABEL 49 select HAVE_ARCH_JUMP_LABEL_RELATIVE 50 select HAVE_ARCH_SECCOMP_FILTER 51 select HAVE_ARCH_TRACEHOOK 52 select HAVE_REGS_AND_STACK_ACCESS_API 53 select GENERIC_SCHED_CLOCK 54 select HAVE_UNSTABLE_SCHED_CLOCK if SMP 55 select GENERIC_CLOCKEVENTS 56 select CPU_NO_EFFICIENT_FFS 57 select NEED_DMA_MAP_STATE 58 select NEED_SG_DMA_LENGTH 59 select HAVE_ARCH_KGDB 60 select HAVE_KPROBES 61 select HAVE_KRETPROBES 62 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1) 63 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE 64 select HAVE_KPROBES_ON_FTRACE 65 select HAVE_DYNAMIC_FTRACE_WITH_REGS 66 67 help 68 The PA-RISC microprocessor is designed by Hewlett-Packard and used 69 in many of their workstations & servers (HP9000 700 and 800 series, 70 and later HP3000 series). The PA-RISC Linux project home page is 71 at <https://parisc.wiki.kernel.org>. 72 73config CPU_BIG_ENDIAN 74 def_bool y 75 76config MMU 77 def_bool y 78 79config STACK_GROWSUP 80 def_bool y 81 82config ARCH_DEFCONFIG 83 string 84 default "arch/parisc/configs/generic-32bit_defconfig" if !64BIT 85 default "arch/parisc/configs/generic-64bit_defconfig" if 64BIT 86 87config GENERIC_LOCKBREAK 88 bool 89 default y 90 depends on SMP && PREEMPTION 91 92config ARCH_HAS_ILOG2_U32 93 bool 94 default n 95 96config ARCH_HAS_ILOG2_U64 97 bool 98 default n 99 100config GENERIC_BUG 101 bool 102 default y 103 depends on BUG 104 105config GENERIC_HWEIGHT 106 bool 107 default y 108 109config GENERIC_CALIBRATE_DELAY 110 bool 111 default y 112 113config TIME_LOW_RES 114 bool 115 depends on SMP 116 default y 117 118# unless you want to implement ACPI on PA-RISC ... ;-) 119config PM 120 bool 121 122config STACKTRACE_SUPPORT 123 def_bool y 124 125config ISA_DMA_API 126 bool 127 128config ARCH_MAY_HAVE_PC_FDC 129 bool 130 depends on BROKEN 131 default y 132 133config PGTABLE_LEVELS 134 int 135 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 136 default 2 137 138config SYS_SUPPORTS_HUGETLBFS 139 def_bool y if PA20 140 141 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 MLONGCALLS 204 bool "Enable the -mlong-calls compiler option for big kernels" 205 default y if !MODULES || UBSAN || FTRACE 206 default n 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 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 select COMPAT_BINFMT_ELF if BINFMT_ELF 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" 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 377 378 379source "drivers/parisc/Kconfig" 380