1# SPDX-License-Identifier: GPL-2.0 2config PARISC 3 def_bool y 4 select ARCH_MIGHT_HAVE_PC_PARPORT 5 select HAVE_IDE 6 select HAVE_OPROFILE 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_SUPPORTS_MEMORY_FAILURE 15 select RTC_CLASS 16 select RTC_DRV_GENERIC 17 select INIT_ALL_POSSIBLE 18 select HAVE_MEMBLOCK 19 select NO_BOOTMEM 20 select BUG 21 select BUILDTIME_EXTABLE_SORT 22 select HAVE_PERF_EVENTS 23 select HAVE_KERNEL_BZIP2 24 select HAVE_KERNEL_GZIP 25 select HAVE_KERNEL_LZ4 26 select HAVE_KERNEL_LZMA 27 select HAVE_KERNEL_LZO 28 select HAVE_KERNEL_XZ 29 select GENERIC_ATOMIC64 if !64BIT 30 select GENERIC_IRQ_PROBE 31 select GENERIC_PCI_IOMAP 32 select ARCH_HAVE_NMI_SAFE_CMPXCHG 33 select GENERIC_SMP_IDLE_THREAD 34 select GENERIC_CPU_DEVICES 35 select GENERIC_STRNCPY_FROM_USER 36 select SYSCTL_ARCH_UNALIGN_ALLOW 37 select SYSCTL_EXCEPTION_TRACE 38 select HAVE_MOD_ARCH_SPECIFIC 39 select VIRT_TO_BUS 40 select MODULES_USE_ELF_RELA 41 select CLONE_BACKWARDS 42 select TTY # Needed for pdc_cons.c 43 select HAVE_DEBUG_STACKOVERFLOW 44 select HAVE_ARCH_AUDITSYSCALL 45 select HAVE_ARCH_HASH 46 select HAVE_ARCH_SECCOMP_FILTER 47 select HAVE_ARCH_TRACEHOOK 48 select HAVE_REGS_AND_STACK_ACCESS_API 49 select GENERIC_SCHED_CLOCK 50 select HAVE_UNSTABLE_SCHED_CLOCK if SMP 51 select GENERIC_CLOCKEVENTS 52 select ARCH_NO_COHERENT_DMA_MMAP 53 select CPU_NO_EFFICIENT_FFS 54 select NEED_DMA_MAP_STATE 55 select NEED_SG_DMA_LENGTH 56 57 help 58 The PA-RISC microprocessor is designed by Hewlett-Packard and used 59 in many of their workstations & servers (HP9000 700 and 800 series, 60 and later HP3000 series). The PA-RISC Linux project home page is 61 at <http://www.parisc-linux.org/>. 62 63config CPU_BIG_ENDIAN 64 def_bool y 65 66config MMU 67 def_bool y 68 69config STACK_GROWSUP 70 def_bool y 71 72config GENERIC_LOCKBREAK 73 bool 74 default y 75 depends on SMP && PREEMPT 76 77config RWSEM_GENERIC_SPINLOCK 78 def_bool y 79 80config RWSEM_XCHGADD_ALGORITHM 81 bool 82 83config ARCH_HAS_ILOG2_U32 84 bool 85 default n 86 87config ARCH_HAS_ILOG2_U64 88 bool 89 default n 90 91config GENERIC_BUG 92 bool 93 default y 94 depends on BUG 95 96config GENERIC_HWEIGHT 97 bool 98 default y 99 100config GENERIC_CALIBRATE_DELAY 101 bool 102 default y 103 104config TIME_LOW_RES 105 bool 106 depends on SMP 107 default y 108 109# unless you want to implement ACPI on PA-RISC ... ;-) 110config PM 111 bool 112 113config STACKTRACE_SUPPORT 114 def_bool y 115 116config ISA_DMA_API 117 bool 118 119config ARCH_MAY_HAVE_PC_FDC 120 bool 121 depends on BROKEN 122 default y 123 124config PGTABLE_LEVELS 125 int 126 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 127 default 2 128 129config SYS_SUPPORTS_HUGETLBFS 130 def_bool y if PA20 131 132 133menu "Processor type and features" 134 135choice 136 prompt "Processor type" 137 default PA7000 138 139config PA7000 140 bool "PA7000/PA7100" 141 ---help--- 142 This is the processor type of your CPU. This information is 143 used for optimizing purposes. In order to compile a kernel 144 that can run on all 32-bit PA CPUs (albeit not optimally fast), 145 you can specify "PA7000" here. 146 147 Specifying "PA8000" here will allow you to select a 64-bit kernel 148 which is required on some machines. 149 150config PA7100LC 151 bool "PA7100LC" 152 help 153 Select this option for the PCX-L processor, as used in the 154 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, 155 D200, D210, D300, D310 and E-class 156 157config PA7200 158 bool "PA7200" 159 help 160 Select this option for the PCX-T' processor, as used in the 161 C100, C110, J100, J110, J210XC, D250, D260, D350, D360, 162 K100, K200, K210, K220, K400, K410 and K420 163 164config PA7300LC 165 bool "PA7300LC" 166 help 167 Select this option for the PCX-L2 processor, as used in the 168 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, 169 D220, D230, D320 and D330. 170 171config PA8X00 172 bool "PA8000 and up" 173 help 174 Select this option for PCX-U to PCX-W2 processors. 175 176endchoice 177 178# Define implied options from the CPU selection here 179 180config PA20 181 def_bool y 182 depends on PA8X00 183 184config PA11 185 def_bool y 186 depends on PA7000 || PA7100LC || PA7200 || PA7300LC 187 select ARCH_HAS_SYNC_DMA_FOR_CPU 188 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 189 select DMA_NONCOHERENT_OPS 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_DISCONTIGMEM_ENABLE 315 def_bool y 316 depends on 64BIT 317 318config ARCH_FLATMEM_ENABLE 319 def_bool y 320 321config ARCH_DISCONTIGMEM_DEFAULT 322 def_bool y 323 depends on ARCH_DISCONTIGMEM_ENABLE 324 325config NODES_SHIFT 326 int 327 default "3" 328 depends on NEED_MULTIPLE_NODES 329 330source "kernel/Kconfig.hz" 331 332config COMPAT 333 def_bool y 334 depends on 64BIT 335 select COMPAT_BINFMT_ELF if BINFMT_ELF 336 337config SYSVIPC_COMPAT 338 def_bool y 339 depends on COMPAT && SYSVIPC 340 341config AUDIT_ARCH 342 def_bool y 343 344config NR_CPUS 345 int "Maximum number of CPUs (2-32)" 346 range 2 32 347 depends on SMP 348 default "4" 349 350endmenu 351 352 353source "drivers/parisc/Kconfig" 354 355config SECCOMP 356 def_bool y 357 prompt "Enable seccomp to safely compute untrusted bytecode" 358 ---help--- 359 This kernel feature is useful for number crunching applications 360 that may need to compute untrusted bytecode during their 361 execution. By using pipes or other transports made available to 362 the process as file descriptors supporting the read/write 363 syscalls, it's possible to isolate those applications in 364 their own address space using seccomp. Once seccomp is 365 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled 366 and the task is only allowed to execute a few safe syscalls 367 defined by each seccomp mode. 368 369 If unsure, say Y. Only embedded should say N here. 370
