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 select SET_FS 67 68 help 69 The PA-RISC microprocessor is designed by Hewlett-Packard and used 70 in many of their workstations & servers (HP9000 700 and 800 series, 71 and later HP3000 series). The PA-RISC Linux project home page is 72 at <https://parisc.wiki.kernel.org>. 73 74config CPU_BIG_ENDIAN 75 def_bool y 76 77config MMU 78 def_bool y 79 80config STACK_GROWSUP 81 def_bool y 82 83config ARCH_DEFCONFIG 84 string 85 default "arch/parisc/configs/generic-32bit_defconfig" if !64BIT 86 default "arch/parisc/configs/generic-64bit_defconfig" if 64BIT 87 88config GENERIC_LOCKBREAK 89 bool 90 default y 91 depends on SMP && PREEMPTION 92 93config ARCH_HAS_ILOG2_U32 94 bool 95 default n 96 97config ARCH_HAS_ILOG2_U64 98 bool 99 default n 100 101config GENERIC_BUG 102 bool 103 default y 104 depends on BUG 105 106config GENERIC_HWEIGHT 107 bool 108 default y 109 110config GENERIC_CALIBRATE_DELAY 111 bool 112 default y 113 114config TIME_LOW_RES 115 bool 116 depends on SMP 117 default y 118 119# unless you want to implement ACPI on PA-RISC ... ;-) 120config PM 121 bool 122 123config STACKTRACE_SUPPORT 124 def_bool y 125 126config ISA_DMA_API 127 bool 128 129config ARCH_MAY_HAVE_PC_FDC 130 bool 131 depends on BROKEN 132 default y 133 134config PGTABLE_LEVELS 135 int 136 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 137 default 2 138 139config SYS_SUPPORTS_HUGETLBFS 140 def_bool y if PA20 141 142 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 259 260config PARISC_PAGE_SIZE_64KB 261 bool "64KB" 262 depends on PA8X00 && BROKEN 263 264endchoice 265 266config PARISC_SELF_EXTRACT 267 bool "Build kernel as self-extracting executable" 268 default y 269 help 270 Say Y if you want to build the parisc kernel as a kind of 271 self-extracting executable. 272 273 If you say N here, the kernel will be compressed with gzip 274 which can be loaded by the palo bootloader directly too. 275 276 If you don't know what to do here, say Y. 277 278config SMP 279 bool "Symmetric multi-processing support" 280 help 281 This enables support for systems with more than one CPU. If you have 282 a system with only one CPU, say N. If you have a system with more 283 than one CPU, say Y. 284 285 If you say N here, the kernel will run on uni- and multiprocessor 286 machines, but will use only one CPU of a multiprocessor machine. 287 On a uniprocessor machine, the kernel will run faster if you say N. 288 289 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 290 available at <https://www.tldp.org/docs.html#howto>. 291 292 If you don't know what to do here, say N. 293 294config PARISC_CPU_TOPOLOGY 295 bool "Support cpu topology definition" 296 depends on SMP 297 default y 298 help 299 Support PARISC cpu topology definition. 300 301config SCHED_MC 302 bool "Multi-core scheduler support" 303 depends on PARISC_CPU_TOPOLOGY && PA8X00 304 help 305 Multi-core scheduler support improves the CPU scheduler's decision 306 making when dealing with multi-core CPU chips at a cost of slightly 307 increased overhead in some places. If unsure say N here. 308 309config IRQSTACKS 310 bool "Use separate kernel stacks when processing interrupts" 311 default y 312 help 313 If you say Y here the kernel will use separate kernel stacks 314 for handling hard and soft interrupts. This can help avoid 315 overflowing the process kernel stacks. 316 317config HOTPLUG_CPU 318 bool 319 default y if SMP 320 321config ARCH_SELECT_MEMORY_MODEL 322 def_bool y 323 depends on 64BIT 324 325config ARCH_SPARSEMEM_ENABLE 326 def_bool y 327 depends on 64BIT 328 329config ARCH_FLATMEM_ENABLE 330 def_bool y 331 332config ARCH_SPARSEMEM_DEFAULT 333 def_bool y 334 depends on ARCH_SPARSEMEM_ENABLE 335 336source "kernel/Kconfig.hz" 337 338config COMPAT 339 def_bool y 340 depends on 64BIT 341 select COMPAT_BINFMT_ELF if BINFMT_ELF 342 343config SYSVIPC_COMPAT 344 def_bool y 345 depends on COMPAT && SYSVIPC 346 347config AUDIT_ARCH 348 def_bool y 349 350config NR_CPUS 351 int "Maximum number of CPUs (2-32)" 352 range 2 32 353 depends on SMP 354 default "4" 355 356config KEXEC 357 bool "Kexec system call" 358 select KEXEC_CORE 359 help 360 kexec is a system call that implements the ability to shutdown your 361 current kernel, and to start another kernel. It is like a reboot 362 but it is independent of the system firmware. And like a reboot 363 you can start any kernel with it, not just Linux. 364 365 It is an ongoing process to be certain the hardware in a machine 366 shutdown, so do not be surprised if this code does not 367 initially work for you. 368 369config KEXEC_FILE 370 bool "kexec file based system call" 371 select KEXEC_CORE 372 select KEXEC_ELF 373 help 374 This enables the kexec_file_load() System call. This is 375 file based and takes file descriptors as system call argument 376 for kernel and initramfs as opposed to list of segments as 377 accepted by previous system call. 378 379endmenu 380 381source "drivers/firmware/Kconfig" 382 383source "drivers/parisc/Kconfig" 384