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 RTC_CLASS 18 select RTC_DRV_GENERIC 19 select INIT_ALL_POSSIBLE 20 select BUG 21 select BUILDTIME_EXTABLE_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_STRNCPY_FROM_USER 37 select SYSCTL_ARCH_UNALIGN_ALLOW 38 select SYSCTL_EXCEPTION_TRACE 39 select ARCH_DISCARD_MEMBLOCK 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 ARCH_NO_COHERENT_DMA_MMAP 57 select CPU_NO_EFFICIENT_FFS 58 select NEED_DMA_MAP_STATE 59 select NEED_SG_DMA_LENGTH 60 select HAVE_ARCH_KGDB 61 select HAVE_KPROBES 62 select HAVE_KRETPROBES 63 64 help 65 The PA-RISC microprocessor is designed by Hewlett-Packard and used 66 in many of their workstations & servers (HP9000 700 and 800 series, 67 and later HP3000 series). The PA-RISC Linux project home page is 68 at <http://www.parisc-linux.org/>. 69 70config CPU_BIG_ENDIAN 71 def_bool y 72 73config MMU 74 def_bool y 75 76config STACK_GROWSUP 77 def_bool y 78 79config GENERIC_LOCKBREAK 80 bool 81 default y 82 depends on SMP && PREEMPT 83 84config ARCH_HAS_ILOG2_U32 85 bool 86 default n 87 88config ARCH_HAS_ILOG2_U64 89 bool 90 default n 91 92config GENERIC_BUG 93 bool 94 default y 95 depends on BUG 96 97config GENERIC_HWEIGHT 98 bool 99 default y 100 101config GENERIC_CALIBRATE_DELAY 102 bool 103 default y 104 105config TIME_LOW_RES 106 bool 107 depends on SMP 108 default y 109 110# unless you want to implement ACPI on PA-RISC ... ;-) 111config PM 112 bool 113 114config STACKTRACE_SUPPORT 115 def_bool y 116 117config ISA_DMA_API 118 bool 119 120config ARCH_MAY_HAVE_PC_FDC 121 bool 122 depends on BROKEN 123 default y 124 125config PGTABLE_LEVELS 126 int 127 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 128 default 2 129 130config SYS_SUPPORTS_HUGETLBFS 131 def_bool y if PA20 132 133 134menu "Processor type and features" 135 136choice 137 prompt "Processor type" 138 default PA7000 139 140config PA7000 141 bool "PA7000/PA7100" 142 ---help--- 143 This is the processor type of your CPU. This information is 144 used for optimizing purposes. In order to compile a kernel 145 that can run on all 32-bit PA CPUs (albeit not optimally fast), 146 you can specify "PA7000" here. 147 148 Specifying "PA8000" here will allow you to select a 64-bit kernel 149 which is required on some machines. 150 151config PA7100LC 152 bool "PA7100LC" 153 help 154 Select this option for the PCX-L processor, as used in the 155 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, 156 D200, D210, D300, D310 and E-class 157 158config PA7200 159 bool "PA7200" 160 help 161 Select this option for the PCX-T' processor, as used in the 162 C100, C110, J100, J110, J210XC, D250, D260, D350, D360, 163 K100, K200, K210, K220, K400, K410 and K420 164 165config PA7300LC 166 bool "PA7300LC" 167 help 168 Select this option for the PCX-L2 processor, as used in the 169 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, 170 D220, D230, D320 and D330. 171 172config PA8X00 173 bool "PA8000 and up" 174 help 175 Select this option for PCX-U to PCX-W2 processors. 176 177endchoice 178 179# Define implied options from the CPU selection here 180 181config PA20 182 def_bool y 183 depends on PA8X00 184 185config PA11 186 def_bool y 187 depends on PA7000 || PA7100LC || PA7200 || PA7300LC 188 select ARCH_HAS_SYNC_DMA_FOR_CPU 189 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 190 select DMA_NONCOHERENT_CACHE_SYNC 191 192config PREFETCH 193 def_bool y 194 depends on PA8X00 || PA7200 195 196config MLONGCALLS 197 bool "Enable the -mlong-calls compiler option for big kernels" 198 default y 199 depends on PA8X00 200 help 201 If you configure the kernel to include many drivers built-in instead 202 as modules, the kernel executable may become too big, so that the 203 linker will not be able to resolve some long branches and fails to link 204 your vmlinux kernel. In that case enabling this option will help you 205 to overcome this limit by using the -mlong-calls compiler option. 206 207 Usually you want to say N here, unless you e.g. want to build 208 a kernel which includes all necessary drivers built-in and which can 209 be used for TFTP booting without the need to have an initrd ramdisk. 210 211 Enabling this option will probably slow down your kernel. 212 213config 64BIT 214 bool "64-bit kernel" 215 depends on PA8X00 216 help 217 Enable this if you want to support 64bit kernel on PA-RISC platform. 218 219 At the moment, only people willing to use more than 2GB of RAM, 220 or having a 64bit-only capable PA-RISC machine should say Y here. 221 222 Since there is no 64bit userland on PA-RISC, there is no point to 223 enable this option otherwise. The 64bit kernel is significantly bigger 224 and slower than the 32bit one. 225 226choice 227 prompt "Kernel page size" 228 default PARISC_PAGE_SIZE_4KB 229 230config PARISC_PAGE_SIZE_4KB 231 bool "4KB" 232 help 233 This lets you select the page size of the kernel. For best 234 performance, a page size of 16KB is recommended. For best 235 compatibility with 32bit applications, a page size of 4KB should be 236 selected (the vast majority of 32bit binaries work perfectly fine 237 with a larger page size). 238 239 4KB For best 32bit compatibility 240 16KB For best performance 241 64KB For best performance, might give more overhead. 242 243 If you don't know what to do, choose 4KB. 244 245config PARISC_PAGE_SIZE_16KB 246 bool "16KB" 247 depends on PA8X00 && BROKEN 248 249config PARISC_PAGE_SIZE_64KB 250 bool "64KB" 251 depends on PA8X00 && BROKEN 252 253endchoice 254 255config PARISC_SELF_EXTRACT 256 bool "Build kernel as self-extracting executable" 257 default y 258 help 259 Say Y if you want to build the parisc kernel as a kind of 260 self-extracting executable. 261 262 If you say N here, the kernel will be compressed with gzip 263 which can be loaded by the palo bootloader directly too. 264 265 If you don't know what to do here, say Y. 266 267config SMP 268 bool "Symmetric multi-processing support" 269 ---help--- 270 This enables support for systems with more than one CPU. If you have 271 a system with only one CPU, say N. If you have a system with more 272 than one CPU, say Y. 273 274 If you say N here, the kernel will run on uni- and multiprocessor 275 machines, but will use only one CPU of a multiprocessor machine. 276 On a uniprocessor machine, the kernel will run faster if you say N. 277 278 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO 279 available at <http://www.tldp.org/docs.html#howto>. 280 281 If you don't know what to do here, say N. 282 283config PARISC_CPU_TOPOLOGY 284 bool "Support cpu topology definition" 285 depends on SMP 286 default y 287 help 288 Support PARISC cpu topology definition. 289 290config SCHED_MC 291 bool "Multi-core scheduler support" 292 depends on PARISC_CPU_TOPOLOGY && PA8X00 293 help 294 Multi-core scheduler support improves the CPU scheduler's decision 295 making when dealing with multi-core CPU chips at a cost of slightly 296 increased overhead in some places. If unsure say N here. 297 298config IRQSTACKS 299 bool "Use separate kernel stacks when processing interrupts" 300 default y 301 help 302 If you say Y here the kernel will use separate kernel stacks 303 for handling hard and soft interrupts. This can help avoid 304 overflowing the process kernel stacks. 305 306config HOTPLUG_CPU 307 bool 308 default y if SMP 309 310config ARCH_SELECT_MEMORY_MODEL 311 def_bool y 312 depends on 64BIT 313 314config ARCH_SPARSEMEM_ENABLE 315 def_bool y 316 depends on 64BIT 317 318config ARCH_FLATMEM_ENABLE 319 def_bool y 320 321config ARCH_SPARSEMEM_DEFAULT 322 def_bool y 323 depends on ARCH_SPARSEMEM_ENABLE 324 325source "kernel/Kconfig.hz" 326 327config COMPAT 328 def_bool y 329 depends on 64BIT 330 select COMPAT_BINFMT_ELF if BINFMT_ELF 331 332config SYSVIPC_COMPAT 333 def_bool y 334 depends on COMPAT && SYSVIPC 335 336config AUDIT_ARCH 337 def_bool y 338 339config NR_CPUS 340 int "Maximum number of CPUs (2-32)" 341 range 2 32 342 depends on SMP 343 default "4" 344 345endmenu 346 347 348source "drivers/parisc/Kconfig" 349 350config SECCOMP 351 def_bool y 352 prompt "Enable seccomp to safely compute untrusted bytecode" 353 ---help--- 354 This kernel feature is useful for number crunching applications 355 that may need to compute untrusted bytecode during their 356 execution. By using pipes or other transports made available to 357 the process as file descriptors supporting the read/write 358 syscalls, it's possible to isolate those applications in 359 their own address space using seccomp. Once seccomp is 360 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled 361 and the task is only allowed to execute a few safe syscalls 362 defined by each seccomp mode. 363 364 If unsure, say Y. Only embedded should say N here. 365