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 HAVE_MOD_ARCH_SPECIFIC 40 select VIRT_TO_BUS 41 select MODULES_USE_ELF_RELA 42 select CLONE_BACKWARDS 43 select TTY # Needed for pdc_cons.c 44 select HAVE_DEBUG_STACKOVERFLOW 45 select HAVE_ARCH_AUDITSYSCALL 46 select HAVE_ARCH_HASH 47 select HAVE_ARCH_JUMP_LABEL 48 select HAVE_ARCH_JUMP_LABEL_RELATIVE 49 select HAVE_ARCH_SECCOMP_FILTER 50 select HAVE_ARCH_TRACEHOOK 51 select HAVE_REGS_AND_STACK_ACCESS_API 52 select GENERIC_SCHED_CLOCK 53 select HAVE_UNSTABLE_SCHED_CLOCK if SMP 54 select GENERIC_CLOCKEVENTS 55 select CPU_NO_EFFICIENT_FFS 56 select NEED_DMA_MAP_STATE 57 select NEED_SG_DMA_LENGTH 58 select HAVE_ARCH_KGDB 59 select HAVE_KPROBES 60 select HAVE_KRETPROBES 61 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1) 62 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE 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 if !MODULES || UBSAN || FTRACE 199 default n 200 depends on PA8X00 201 help 202 If you configure the kernel to include many drivers built-in instead 203 as modules, the kernel executable may become too big, so that the 204 linker will not be able to resolve some long branches and fails to link 205 your vmlinux kernel. In that case enabling this option will help you 206 to overcome this limit by using the -mlong-calls compiler option. 207 208 Usually you want to say N here, unless you e.g. want to build 209 a kernel which includes all necessary drivers built-in and which can 210 be used for TFTP booting without the need to have an initrd ramdisk. 211 212 Enabling this option will probably slow down your kernel. 213 214config 64BIT 215 bool "64-bit kernel" 216 depends on PA8X00 217 help 218 Enable this if you want to support 64bit kernel on PA-RISC platform. 219 220 At the moment, only people willing to use more than 2GB of RAM, 221 or having a 64bit-only capable PA-RISC machine should say Y here. 222 223 Since there is no 64bit userland on PA-RISC, there is no point to 224 enable this option otherwise. The 64bit kernel is significantly bigger 225 and slower than the 32bit one. 226 227choice 228 prompt "Kernel page size" 229 default PARISC_PAGE_SIZE_4KB 230 231config PARISC_PAGE_SIZE_4KB 232 bool "4KB" 233 help 234 This lets you select the page size of the kernel. For best 235 performance, a page size of 16KB is recommended. For best 236 compatibility with 32bit applications, a page size of 4KB should be 237 selected (the vast majority of 32bit binaries work perfectly fine 238 with a larger page size). 239 240 4KB For best 32bit compatibility 241 16KB For best performance 242 64KB For best performance, might give more overhead. 243 244 If you don't know what to do, choose 4KB. 245 246config PARISC_PAGE_SIZE_16KB 247 bool "16KB" 248 depends on PA8X00 && BROKEN 249 250config PARISC_PAGE_SIZE_64KB 251 bool "64KB" 252 depends on PA8X00 && BROKEN 253 254endchoice 255 256config PARISC_SELF_EXTRACT 257 bool "Build kernel as self-extracting executable" 258 default y 259 help 260 Say Y if you want to build the parisc kernel as a kind of 261 self-extracting executable. 262 263 If you say N here, the kernel will be compressed with gzip 264 which can be loaded by the palo bootloader directly too. 265 266 If you don't know what to do here, say Y. 267 268config SMP 269 bool "Symmetric multi-processing support" 270 ---help--- 271 This enables support for systems with more than one CPU. If you have 272 a system with only one CPU, say N. If you have a system with more 273 than one CPU, say Y. 274 275 If you say N here, the kernel will run on uni- and multiprocessor 276 machines, but will use only one CPU of a multiprocessor machine. 277 On a uniprocessor machine, the kernel will run faster if you say N. 278 279 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 280 available at <http://www.tldp.org/docs.html#howto>. 281 282 If you don't know what to do here, say N. 283 284config PARISC_CPU_TOPOLOGY 285 bool "Support cpu topology definition" 286 depends on SMP 287 default y 288 help 289 Support PARISC cpu topology definition. 290 291config SCHED_MC 292 bool "Multi-core scheduler support" 293 depends on PARISC_CPU_TOPOLOGY && PA8X00 294 help 295 Multi-core scheduler support improves the CPU scheduler's decision 296 making when dealing with multi-core CPU chips at a cost of slightly 297 increased overhead in some places. If unsure say N here. 298 299config IRQSTACKS 300 bool "Use separate kernel stacks when processing interrupts" 301 default y 302 help 303 If you say Y here the kernel will use separate kernel stacks 304 for handling hard and soft interrupts. This can help avoid 305 overflowing the process kernel stacks. 306 307config HOTPLUG_CPU 308 bool 309 default y if SMP 310 311config ARCH_SELECT_MEMORY_MODEL 312 def_bool y 313 depends on 64BIT 314 315config ARCH_SPARSEMEM_ENABLE 316 def_bool y 317 depends on 64BIT 318 319config ARCH_FLATMEM_ENABLE 320 def_bool y 321 322config ARCH_SPARSEMEM_DEFAULT 323 def_bool y 324 depends on ARCH_SPARSEMEM_ENABLE 325 326source "kernel/Kconfig.hz" 327 328config COMPAT 329 def_bool y 330 depends on 64BIT 331 select COMPAT_BINFMT_ELF if BINFMT_ELF 332 333config SYSVIPC_COMPAT 334 def_bool y 335 depends on COMPAT && SYSVIPC 336 337config AUDIT_ARCH 338 def_bool y 339 340config NR_CPUS 341 int "Maximum number of CPUs (2-32)" 342 range 2 32 343 depends on SMP 344 default "4" 345 346endmenu 347 348 349source "drivers/parisc/Kconfig" 350 351config SECCOMP 352 def_bool y 353 prompt "Enable seccomp to safely compute untrusted bytecode" 354 ---help--- 355 This kernel feature is useful for number crunching applications 356 that may need to compute untrusted bytecode during their 357 execution. By using pipes or other transports made available to 358 the process as file descriptors supporting the read/write 359 syscalls, it's possible to isolate those applications in 360 their own address space using seccomp. Once seccomp is 361 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled 362 and the task is only allowed to execute a few safe syscalls 363 defined by each seccomp mode. 364 365 If unsure, say Y. Only embedded should say N here. 366