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 ARCH_NO_COHERENT_DMA_MMAP 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 65 help 66 The PA-RISC microprocessor is designed by Hewlett-Packard and used 67 in many of their workstations & servers (HP9000 700 and 800 series, 68 and later HP3000 series). The PA-RISC Linux project home page is 69 at <http://www.parisc-linux.org/>. 70 71config CPU_BIG_ENDIAN 72 def_bool y 73 74config MMU 75 def_bool y 76 77config STACK_GROWSUP 78 def_bool y 79 80config GENERIC_LOCKBREAK 81 bool 82 default y 83 depends on SMP && PREEMPT 84 85config ARCH_HAS_ILOG2_U32 86 bool 87 default n 88 89config ARCH_HAS_ILOG2_U64 90 bool 91 default n 92 93config GENERIC_BUG 94 bool 95 default y 96 depends on BUG 97 98config GENERIC_HWEIGHT 99 bool 100 default y 101 102config GENERIC_CALIBRATE_DELAY 103 bool 104 default y 105 106config TIME_LOW_RES 107 bool 108 depends on SMP 109 default y 110 111# unless you want to implement ACPI on PA-RISC ... ;-) 112config PM 113 bool 114 115config STACKTRACE_SUPPORT 116 def_bool y 117 118config ISA_DMA_API 119 bool 120 121config ARCH_MAY_HAVE_PC_FDC 122 bool 123 depends on BROKEN 124 default y 125 126config PGTABLE_LEVELS 127 int 128 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 129 default 2 130 131config SYS_SUPPORTS_HUGETLBFS 132 def_bool y if PA20 133 134 135menu "Processor type and features" 136 137choice 138 prompt "Processor type" 139 default PA7000 140 141config PA7000 142 bool "PA7000/PA7100" 143 ---help--- 144 This is the processor type of your CPU. This information is 145 used for optimizing purposes. In order to compile a kernel 146 that can run on all 32-bit PA CPUs (albeit not optimally fast), 147 you can specify "PA7000" here. 148 149 Specifying "PA8000" here will allow you to select a 64-bit kernel 150 which is required on some machines. 151 152config PA7100LC 153 bool "PA7100LC" 154 help 155 Select this option for the PCX-L processor, as used in the 156 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, 157 D200, D210, D300, D310 and E-class 158 159config PA7200 160 bool "PA7200" 161 help 162 Select this option for the PCX-T' processor, as used in the 163 C100, C110, J100, J110, J210XC, D250, D260, D350, D360, 164 K100, K200, K210, K220, K400, K410 and K420 165 166config PA7300LC 167 bool "PA7300LC" 168 help 169 Select this option for the PCX-L2 processor, as used in the 170 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, 171 D220, D230, D320 and D330. 172 173config PA8X00 174 bool "PA8000 and up" 175 help 176 Select this option for PCX-U to PCX-W2 processors. 177 178endchoice 179 180# Define implied options from the CPU selection here 181 182config PA20 183 def_bool y 184 depends on PA8X00 185 186config PA11 187 def_bool y 188 depends on PA7000 || PA7100LC || PA7200 || PA7300LC 189 select ARCH_HAS_SYNC_DMA_FOR_CPU 190 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 191 select DMA_NONCOHERENT_CACHE_SYNC 192 193config PREFETCH 194 def_bool y 195 depends on PA8X00 || PA7200 196 197config MLONGCALLS 198 bool "Enable the -mlong-calls compiler option for big kernels" 199 default y if !MODULES || UBSAN || FTRACE 200 default n 201 depends on PA8X00 202 help 203 If you configure the kernel to include many drivers built-in instead 204 as modules, the kernel executable may become too big, so that the 205 linker will not be able to resolve some long branches and fails to link 206 your vmlinux kernel. In that case enabling this option will help you 207 to overcome this limit by using the -mlong-calls compiler option. 208 209 Usually you want to say N here, unless you e.g. want to build 210 a kernel which includes all necessary drivers built-in and which can 211 be used for TFTP booting without the need to have an initrd ramdisk. 212 213 Enabling this option will probably slow down your kernel. 214 215config 64BIT 216 bool "64-bit kernel" 217 depends on PA8X00 218 help 219 Enable this if you want to support 64bit kernel on PA-RISC platform. 220 221 At the moment, only people willing to use more than 2GB of RAM, 222 or having a 64bit-only capable PA-RISC machine should say Y here. 223 224 Since there is no 64bit userland on PA-RISC, there is no point to 225 enable this option otherwise. The 64bit kernel is significantly bigger 226 and slower than the 32bit one. 227 228choice 229 prompt "Kernel page size" 230 default PARISC_PAGE_SIZE_4KB 231 232config PARISC_PAGE_SIZE_4KB 233 bool "4KB" 234 help 235 This lets you select the page size of the kernel. For best 236 performance, a page size of 16KB is recommended. For best 237 compatibility with 32bit applications, a page size of 4KB should be 238 selected (the vast majority of 32bit binaries work perfectly fine 239 with a larger page size). 240 241 4KB For best 32bit compatibility 242 16KB For best performance 243 64KB For best performance, might give more overhead. 244 245 If you don't know what to do, choose 4KB. 246 247config PARISC_PAGE_SIZE_16KB 248 bool "16KB" 249 depends on PA8X00 && BROKEN 250 251config PARISC_PAGE_SIZE_64KB 252 bool "64KB" 253 depends on PA8X00 && BROKEN 254 255endchoice 256 257config PARISC_SELF_EXTRACT 258 bool "Build kernel as self-extracting executable" 259 default y 260 help 261 Say Y if you want to build the parisc kernel as a kind of 262 self-extracting executable. 263 264 If you say N here, the kernel will be compressed with gzip 265 which can be loaded by the palo bootloader directly too. 266 267 If you don't know what to do here, say Y. 268 269config SMP 270 bool "Symmetric multi-processing support" 271 ---help--- 272 This enables support for systems with more than one CPU. If you have 273 a system with only one CPU, say N. If you have a system with more 274 than one CPU, say Y. 275 276 If you say N here, the kernel will run on uni- and multiprocessor 277 machines, but will use only one CPU of a multiprocessor machine. 278 On a uniprocessor machine, the kernel will run faster if you say N. 279 280 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO 281 available at <http://www.tldp.org/docs.html#howto>. 282 283 If you don't know what to do here, say N. 284 285config PARISC_CPU_TOPOLOGY 286 bool "Support cpu topology definition" 287 depends on SMP 288 default y 289 help 290 Support PARISC cpu topology definition. 291 292config SCHED_MC 293 bool "Multi-core scheduler support" 294 depends on PARISC_CPU_TOPOLOGY && PA8X00 295 help 296 Multi-core scheduler support improves the CPU scheduler's decision 297 making when dealing with multi-core CPU chips at a cost of slightly 298 increased overhead in some places. If unsure say N here. 299 300config IRQSTACKS 301 bool "Use separate kernel stacks when processing interrupts" 302 default y 303 help 304 If you say Y here the kernel will use separate kernel stacks 305 for handling hard and soft interrupts. This can help avoid 306 overflowing the process kernel stacks. 307 308config HOTPLUG_CPU 309 bool 310 default y if SMP 311 312config ARCH_SELECT_MEMORY_MODEL 313 def_bool y 314 depends on 64BIT 315 316config ARCH_SPARSEMEM_ENABLE 317 def_bool y 318 depends on 64BIT 319 320config ARCH_FLATMEM_ENABLE 321 def_bool y 322 323config ARCH_SPARSEMEM_DEFAULT 324 def_bool y 325 depends on ARCH_SPARSEMEM_ENABLE 326 327source "kernel/Kconfig.hz" 328 329config COMPAT 330 def_bool y 331 depends on 64BIT 332 select COMPAT_BINFMT_ELF if BINFMT_ELF 333 334config SYSVIPC_COMPAT 335 def_bool y 336 depends on COMPAT && SYSVIPC 337 338config AUDIT_ARCH 339 def_bool y 340 341config NR_CPUS 342 int "Maximum number of CPUs (2-32)" 343 range 2 32 344 depends on SMP 345 default "4" 346 347endmenu 348 349 350source "drivers/parisc/Kconfig" 351 352config SECCOMP 353 def_bool y 354 prompt "Enable seccomp to safely compute untrusted bytecode" 355 ---help--- 356 This kernel feature is useful for number crunching applications 357 that may need to compute untrusted bytecode during their 358 execution. By using pipes or other transports made available to 359 the process as file descriptors supporting the read/write 360 syscalls, it's possible to isolate those applications in 361 their own address space using seccomp. Once seccomp is 362 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled 363 and the task is only allowed to execute a few safe syscalls 364 defined by each seccomp mode. 365 366 If unsure, say Y. Only embedded should say N here. 367