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_SECCOMP_FILTER 48 select HAVE_ARCH_TRACEHOOK 49 select HAVE_REGS_AND_STACK_ACCESS_API 50 select GENERIC_SCHED_CLOCK 51 select HAVE_UNSTABLE_SCHED_CLOCK if SMP 52 select GENERIC_CLOCKEVENTS 53 select ARCH_NO_COHERENT_DMA_MMAP 54 select CPU_NO_EFFICIENT_FFS 55 select NEED_DMA_MAP_STATE 56 select NEED_SG_DMA_LENGTH 57 58 help 59 The PA-RISC microprocessor is designed by Hewlett-Packard and used 60 in many of their workstations & servers (HP9000 700 and 800 series, 61 and later HP3000 series). The PA-RISC Linux project home page is 62 at <http://www.parisc-linux.org/>. 63 64config CPU_BIG_ENDIAN 65 def_bool y 66 67config MMU 68 def_bool y 69 70config STACK_GROWSUP 71 def_bool y 72 73config GENERIC_LOCKBREAK 74 bool 75 default y 76 depends on SMP && PREEMPT 77 78config ARCH_HAS_ILOG2_U32 79 bool 80 default n 81 82config ARCH_HAS_ILOG2_U64 83 bool 84 default n 85 86config GENERIC_BUG 87 bool 88 default y 89 depends on BUG 90 91config GENERIC_HWEIGHT 92 bool 93 default y 94 95config GENERIC_CALIBRATE_DELAY 96 bool 97 default y 98 99config TIME_LOW_RES 100 bool 101 depends on SMP 102 default y 103 104# unless you want to implement ACPI on PA-RISC ... ;-) 105config PM 106 bool 107 108config STACKTRACE_SUPPORT 109 def_bool y 110 111config ISA_DMA_API 112 bool 113 114config ARCH_MAY_HAVE_PC_FDC 115 bool 116 depends on BROKEN 117 default y 118 119config PGTABLE_LEVELS 120 int 121 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 122 default 2 123 124config SYS_SUPPORTS_HUGETLBFS 125 def_bool y if PA20 126 127 128menu "Processor type and features" 129 130choice 131 prompt "Processor type" 132 default PA7000 133 134config PA7000 135 bool "PA7000/PA7100" 136 ---help--- 137 This is the processor type of your CPU. This information is 138 used for optimizing purposes. In order to compile a kernel 139 that can run on all 32-bit PA CPUs (albeit not optimally fast), 140 you can specify "PA7000" here. 141 142 Specifying "PA8000" here will allow you to select a 64-bit kernel 143 which is required on some machines. 144 145config PA7100LC 146 bool "PA7100LC" 147 help 148 Select this option for the PCX-L processor, as used in the 149 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, 150 D200, D210, D300, D310 and E-class 151 152config PA7200 153 bool "PA7200" 154 help 155 Select this option for the PCX-T' processor, as used in the 156 C100, C110, J100, J110, J210XC, D250, D260, D350, D360, 157 K100, K200, K210, K220, K400, K410 and K420 158 159config PA7300LC 160 bool "PA7300LC" 161 help 162 Select this option for the PCX-L2 processor, as used in the 163 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, 164 D220, D230, D320 and D330. 165 166config PA8X00 167 bool "PA8000 and up" 168 help 169 Select this option for PCX-U to PCX-W2 processors. 170 171endchoice 172 173# Define implied options from the CPU selection here 174 175config PA20 176 def_bool y 177 depends on PA8X00 178 179config PA11 180 def_bool y 181 depends on PA7000 || PA7100LC || PA7200 || PA7300LC 182 select ARCH_HAS_SYNC_DMA_FOR_CPU 183 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 184 select DMA_NONCOHERENT_CACHE_SYNC 185 186config PREFETCH 187 def_bool y 188 depends on PA8X00 || PA7200 189 190config MLONGCALLS 191 bool "Enable the -mlong-calls compiler option for big kernels" 192 default y 193 depends on PA8X00 194 help 195 If you configure the kernel to include many drivers built-in instead 196 as modules, the kernel executable may become too big, so that the 197 linker will not be able to resolve some long branches and fails to link 198 your vmlinux kernel. In that case enabling this option will help you 199 to overcome this limit by using the -mlong-calls compiler option. 200 201 Usually you want to say N here, unless you e.g. want to build 202 a kernel which includes all necessary drivers built-in and which can 203 be used for TFTP booting without the need to have an initrd ramdisk. 204 205 Enabling this option will probably slow down your kernel. 206 207config 64BIT 208 bool "64-bit kernel" 209 depends on PA8X00 210 help 211 Enable this if you want to support 64bit kernel on PA-RISC platform. 212 213 At the moment, only people willing to use more than 2GB of RAM, 214 or having a 64bit-only capable PA-RISC machine should say Y here. 215 216 Since there is no 64bit userland on PA-RISC, there is no point to 217 enable this option otherwise. The 64bit kernel is significantly bigger 218 and slower than the 32bit one. 219 220choice 221 prompt "Kernel page size" 222 default PARISC_PAGE_SIZE_4KB 223 224config PARISC_PAGE_SIZE_4KB 225 bool "4KB" 226 help 227 This lets you select the page size of the kernel. For best 228 performance, a page size of 16KB is recommended. For best 229 compatibility with 32bit applications, a page size of 4KB should be 230 selected (the vast majority of 32bit binaries work perfectly fine 231 with a larger page size). 232 233 4KB For best 32bit compatibility 234 16KB For best performance 235 64KB For best performance, might give more overhead. 236 237 If you don't know what to do, choose 4KB. 238 239config PARISC_PAGE_SIZE_16KB 240 bool "16KB" 241 depends on PA8X00 && BROKEN 242 243config PARISC_PAGE_SIZE_64KB 244 bool "64KB" 245 depends on PA8X00 && BROKEN 246 247endchoice 248 249config PARISC_SELF_EXTRACT 250 bool "Build kernel as self-extracting executable" 251 default y 252 help 253 Say Y if you want to build the parisc kernel as a kind of 254 self-extracting executable. 255 256 If you say N here, the kernel will be compressed with gzip 257 which can be loaded by the palo bootloader directly too. 258 259 If you don't know what to do here, say Y. 260 261config SMP 262 bool "Symmetric multi-processing support" 263 ---help--- 264 This enables support for systems with more than one CPU. If you have 265 a system with only one CPU, say N. If you have a system with more 266 than one CPU, say Y. 267 268 If you say N here, the kernel will run on uni- and multiprocessor 269 machines, but will use only one CPU of a multiprocessor machine. 270 On a uniprocessor machine, the kernel will run faster if you say N. 271 272 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO 273 available at <http://www.tldp.org/docs.html#howto>. 274 275 If you don't know what to do here, say N. 276 277config PARISC_CPU_TOPOLOGY 278 bool "Support cpu topology definition" 279 depends on SMP 280 default y 281 help 282 Support PARISC cpu topology definition. 283 284config SCHED_MC 285 bool "Multi-core scheduler support" 286 depends on PARISC_CPU_TOPOLOGY && PA8X00 287 help 288 Multi-core scheduler support improves the CPU scheduler's decision 289 making when dealing with multi-core CPU chips at a cost of slightly 290 increased overhead in some places. If unsure say N here. 291 292config IRQSTACKS 293 bool "Use separate kernel stacks when processing interrupts" 294 default y 295 help 296 If you say Y here the kernel will use separate kernel stacks 297 for handling hard and soft interrupts. This can help avoid 298 overflowing the process kernel stacks. 299 300config HOTPLUG_CPU 301 bool 302 default y if SMP 303 304config ARCH_SELECT_MEMORY_MODEL 305 def_bool y 306 depends on 64BIT 307 308config ARCH_DISCONTIGMEM_ENABLE 309 def_bool y 310 depends on 64BIT 311 312config ARCH_FLATMEM_ENABLE 313 def_bool y 314 315config ARCH_DISCONTIGMEM_DEFAULT 316 def_bool y 317 depends on ARCH_DISCONTIGMEM_ENABLE 318 319config NODES_SHIFT 320 int 321 default "3" 322 depends on NEED_MULTIPLE_NODES 323 324source "kernel/Kconfig.hz" 325 326config COMPAT 327 def_bool y 328 depends on 64BIT 329 select COMPAT_BINFMT_ELF if BINFMT_ELF 330 331config SYSVIPC_COMPAT 332 def_bool y 333 depends on COMPAT && SYSVIPC 334 335config AUDIT_ARCH 336 def_bool y 337 338config NR_CPUS 339 int "Maximum number of CPUs (2-32)" 340 range 2 32 341 depends on SMP 342 default "4" 343 344endmenu 345 346 347source "drivers/parisc/Kconfig" 348 349config SECCOMP 350 def_bool y 351 prompt "Enable seccomp to safely compute untrusted bytecode" 352 ---help--- 353 This kernel feature is useful for number crunching applications 354 that may need to compute untrusted bytecode during their 355 execution. By using pipes or other transports made available to 356 the process as file descriptors supporting the read/write 357 syscalls, it's possible to isolate those applications in 358 their own address space using seccomp. Once seccomp is 359 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled 360 and the task is only allowed to execute a few safe syscalls 361 defined by each seccomp mode. 362 363 If unsure, say Y. Only embedded should say N here. 364