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_NO_SG_CHAIN 15 select ARCH_SUPPORTS_MEMORY_FAILURE 16 select RTC_CLASS 17 select RTC_DRV_GENERIC 18 select INIT_ALL_POSSIBLE 19 select BUG 20 select BUILDTIME_EXTABLE_SORT 21 select HAVE_PCI 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_CACHE_SYNC 190 191config PREFETCH 192 def_bool y 193 depends on PA8X00 || PA7200 194 195config MLONGCALLS 196 bool "Enable the -mlong-calls compiler option for big kernels" 197 default y 198 depends on PA8X00 199 help 200 If you configure the kernel to include many drivers built-in instead 201 as modules, the kernel executable may become too big, so that the 202 linker will not be able to resolve some long branches and fails to link 203 your vmlinux kernel. In that case enabling this option will help you 204 to overcome this limit by using the -mlong-calls compiler option. 205 206 Usually you want to say N here, unless you e.g. want to build 207 a kernel which includes all necessary drivers built-in and which can 208 be used for TFTP booting without the need to have an initrd ramdisk. 209 210 Enabling this option will probably slow down your kernel. 211 212config 64BIT 213 bool "64-bit kernel" 214 depends on PA8X00 215 help 216 Enable this if you want to support 64bit kernel on PA-RISC platform. 217 218 At the moment, only people willing to use more than 2GB of RAM, 219 or having a 64bit-only capable PA-RISC machine should say Y here. 220 221 Since there is no 64bit userland on PA-RISC, there is no point to 222 enable this option otherwise. The 64bit kernel is significantly bigger 223 and slower than the 32bit one. 224 225choice 226 prompt "Kernel page size" 227 default PARISC_PAGE_SIZE_4KB 228 229config PARISC_PAGE_SIZE_4KB 230 bool "4KB" 231 help 232 This lets you select the page size of the kernel. For best 233 performance, a page size of 16KB is recommended. For best 234 compatibility with 32bit applications, a page size of 4KB should be 235 selected (the vast majority of 32bit binaries work perfectly fine 236 with a larger page size). 237 238 4KB For best 32bit compatibility 239 16KB For best performance 240 64KB For best performance, might give more overhead. 241 242 If you don't know what to do, choose 4KB. 243 244config PARISC_PAGE_SIZE_16KB 245 bool "16KB" 246 depends on PA8X00 && BROKEN 247 248config PARISC_PAGE_SIZE_64KB 249 bool "64KB" 250 depends on PA8X00 && BROKEN 251 252endchoice 253 254config PARISC_SELF_EXTRACT 255 bool "Build kernel as self-extracting executable" 256 default y 257 help 258 Say Y if you want to build the parisc kernel as a kind of 259 self-extracting executable. 260 261 If you say N here, the kernel will be compressed with gzip 262 which can be loaded by the palo bootloader directly too. 263 264 If you don't know what to do here, say Y. 265 266config SMP 267 bool "Symmetric multi-processing support" 268 ---help--- 269 This enables support for systems with more than one CPU. If you have 270 a system with only one CPU, say N. If you have a system with more 271 than one CPU, say Y. 272 273 If you say N here, the kernel will run on uni- and multiprocessor 274 machines, but will use only one CPU of a multiprocessor machine. 275 On a uniprocessor machine, the kernel will run faster if you say N. 276 277 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO 278 available at <http://www.tldp.org/docs.html#howto>. 279 280 If you don't know what to do here, say N. 281 282config PARISC_CPU_TOPOLOGY 283 bool "Support cpu topology definition" 284 depends on SMP 285 default y 286 help 287 Support PARISC cpu topology definition. 288 289config SCHED_MC 290 bool "Multi-core scheduler support" 291 depends on PARISC_CPU_TOPOLOGY && PA8X00 292 help 293 Multi-core scheduler support improves the CPU scheduler's decision 294 making when dealing with multi-core CPU chips at a cost of slightly 295 increased overhead in some places. If unsure say N here. 296 297config IRQSTACKS 298 bool "Use separate kernel stacks when processing interrupts" 299 default y 300 help 301 If you say Y here the kernel will use separate kernel stacks 302 for handling hard and soft interrupts. This can help avoid 303 overflowing the process kernel stacks. 304 305config HOTPLUG_CPU 306 bool 307 default y if SMP 308 309config ARCH_SELECT_MEMORY_MODEL 310 def_bool y 311 depends on 64BIT 312 313config ARCH_DISCONTIGMEM_ENABLE 314 def_bool y 315 depends on 64BIT 316 317config ARCH_FLATMEM_ENABLE 318 def_bool y 319 320config ARCH_DISCONTIGMEM_DEFAULT 321 def_bool y 322 depends on ARCH_DISCONTIGMEM_ENABLE 323 324config NODES_SHIFT 325 int 326 default "3" 327 depends on NEED_MULTIPLE_NODES 328 329source "kernel/Kconfig.hz" 330 331config COMPAT 332 def_bool y 333 depends on 64BIT 334 select COMPAT_BINFMT_ELF if BINFMT_ELF 335 336config SYSVIPC_COMPAT 337 def_bool y 338 depends on COMPAT && SYSVIPC 339 340config AUDIT_ARCH 341 def_bool y 342 343config NR_CPUS 344 int "Maximum number of CPUs (2-32)" 345 range 2 32 346 depends on SMP 347 default "4" 348 349endmenu 350 351 352source "drivers/parisc/Kconfig" 353 354config SECCOMP 355 def_bool y 356 prompt "Enable seccomp to safely compute untrusted bytecode" 357 ---help--- 358 This kernel feature is useful for number crunching applications 359 that may need to compute untrusted bytecode during their 360 execution. By using pipes or other transports made available to 361 the process as file descriptors supporting the read/write 362 syscalls, it's possible to isolate those applications in 363 their own address space using seccomp. Once seccomp is 364 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled 365 and the task is only allowed to execute a few safe syscalls 366 defined by each seccomp mode. 367 368 If unsure, say Y. Only embedded should say N here. 369