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 select HAVE_KPROBES_ON_FTRACE 64 select HAVE_DYNAMIC_FTRACE_WITH_REGS 65 66 help 67 The PA-RISC microprocessor is designed by Hewlett-Packard and used 68 in many of their workstations & servers (HP9000 700 and 800 series, 69 and later HP3000 series). The PA-RISC Linux project home page is 70 at <http://www.parisc-linux.org/>. 71 72config CPU_BIG_ENDIAN 73 def_bool y 74 75config MMU 76 def_bool y 77 78config STACK_GROWSUP 79 def_bool y 80 81config GENERIC_LOCKBREAK 82 bool 83 default y 84 depends on SMP && PREEMPT 85 86config ARCH_HAS_ILOG2_U32 87 bool 88 default n 89 90config ARCH_HAS_ILOG2_U64 91 bool 92 default n 93 94config GENERIC_BUG 95 bool 96 default y 97 depends on BUG 98 99config GENERIC_HWEIGHT 100 bool 101 default y 102 103config GENERIC_CALIBRATE_DELAY 104 bool 105 default y 106 107config TIME_LOW_RES 108 bool 109 depends on SMP 110 default y 111 112# unless you want to implement ACPI on PA-RISC ... ;-) 113config PM 114 bool 115 116config STACKTRACE_SUPPORT 117 def_bool y 118 119config ISA_DMA_API 120 bool 121 122config ARCH_MAY_HAVE_PC_FDC 123 bool 124 depends on BROKEN 125 default y 126 127config PGTABLE_LEVELS 128 int 129 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 130 default 2 131 132config SYS_SUPPORTS_HUGETLBFS 133 def_bool y if PA20 134 135 136menu "Processor type and features" 137 138choice 139 prompt "Processor type" 140 default PA7000 141 142config PA7000 143 bool "PA7000/PA7100" 144 ---help--- 145 This is the processor type of your CPU. This information is 146 used for optimizing purposes. In order to compile a kernel 147 that can run on all 32-bit PA CPUs (albeit not optimally fast), 148 you can specify "PA7000" here. 149 150 Specifying "PA8000" here will allow you to select a 64-bit kernel 151 which is required on some machines. 152 153config PA7100LC 154 bool "PA7100LC" 155 help 156 Select this option for the PCX-L processor, as used in the 157 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, 158 D200, D210, D300, D310 and E-class 159 160config PA7200 161 bool "PA7200" 162 help 163 Select this option for the PCX-T' processor, as used in the 164 C100, C110, J100, J110, J210XC, D250, D260, D350, D360, 165 K100, K200, K210, K220, K400, K410 and K420 166 167config PA7300LC 168 bool "PA7300LC" 169 help 170 Select this option for the PCX-L2 processor, as used in the 171 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, 172 D220, D230, D320 and D330. 173 174config PA8X00 175 bool "PA8000 and up" 176 help 177 Select this option for PCX-U to PCX-W2 processors. 178 179endchoice 180 181# Define implied options from the CPU selection here 182 183config PA20 184 def_bool y 185 depends on PA8X00 186 187config PA11 188 def_bool y 189 depends on PA7000 || PA7100LC || PA7200 || PA7300LC 190 select ARCH_HAS_SYNC_DMA_FOR_CPU 191 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 192 select DMA_NONCOHERENT_CACHE_SYNC 193 194config PREFETCH 195 def_bool y 196 depends on PA8X00 || PA7200 197 198config MLONGCALLS 199 bool "Enable the -mlong-calls compiler option for big kernels" 200 default y if !MODULES || UBSAN || FTRACE 201 default n 202 depends on PA8X00 203 help 204 If you configure the kernel to include many drivers built-in instead 205 as modules, the kernel executable may become too big, so that the 206 linker will not be able to resolve some long branches and fails to link 207 your vmlinux kernel. In that case enabling this option will help you 208 to overcome this limit by using the -mlong-calls compiler option. 209 210 Usually you want to say N here, unless you e.g. want to build 211 a kernel which includes all necessary drivers built-in and which can 212 be used for TFTP booting without the need to have an initrd ramdisk. 213 214 Enabling this option will probably slow down your kernel. 215 216config 64BIT 217 bool "64-bit kernel" 218 depends on PA8X00 219 help 220 Enable this if you want to support 64bit kernel on PA-RISC platform. 221 222 At the moment, only people willing to use more than 2GB of RAM, 223 or having a 64bit-only capable PA-RISC machine should say Y here. 224 225 Since there is no 64bit userland on PA-RISC, there is no point to 226 enable this option otherwise. The 64bit kernel is significantly bigger 227 and slower than the 32bit one. 228 229choice 230 prompt "Kernel page size" 231 default PARISC_PAGE_SIZE_4KB 232 233config PARISC_PAGE_SIZE_4KB 234 bool "4KB" 235 help 236 This lets you select the page size of the kernel. For best 237 performance, a page size of 16KB is recommended. For best 238 compatibility with 32bit applications, a page size of 4KB should be 239 selected (the vast majority of 32bit binaries work perfectly fine 240 with a larger page size). 241 242 4KB For best 32bit compatibility 243 16KB For best performance 244 64KB For best performance, might give more overhead. 245 246 If you don't know what to do, choose 4KB. 247 248config PARISC_PAGE_SIZE_16KB 249 bool "16KB" 250 depends on PA8X00 && BROKEN 251 252config PARISC_PAGE_SIZE_64KB 253 bool "64KB" 254 depends on PA8X00 && BROKEN 255 256endchoice 257 258config PARISC_SELF_EXTRACT 259 bool "Build kernel as self-extracting executable" 260 default y 261 help 262 Say Y if you want to build the parisc kernel as a kind of 263 self-extracting executable. 264 265 If you say N here, the kernel will be compressed with gzip 266 which can be loaded by the palo bootloader directly too. 267 268 If you don't know what to do here, say Y. 269 270config SMP 271 bool "Symmetric multi-processing support" 272 ---help--- 273 This enables support for systems with more than one CPU. If you have 274 a system with only one CPU, say N. If you have a system with more 275 than one CPU, say Y. 276 277 If you say N here, the kernel will run on uni- and multiprocessor 278 machines, but will use only one CPU of a multiprocessor machine. 279 On a uniprocessor machine, the kernel will run faster if you say N. 280 281 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 282 available at <http://www.tldp.org/docs.html#howto>. 283 284 If you don't know what to do here, say N. 285 286config PARISC_CPU_TOPOLOGY 287 bool "Support cpu topology definition" 288 depends on SMP 289 default y 290 help 291 Support PARISC cpu topology definition. 292 293config SCHED_MC 294 bool "Multi-core scheduler support" 295 depends on PARISC_CPU_TOPOLOGY && PA8X00 296 help 297 Multi-core scheduler support improves the CPU scheduler's decision 298 making when dealing with multi-core CPU chips at a cost of slightly 299 increased overhead in some places. If unsure say N here. 300 301config IRQSTACKS 302 bool "Use separate kernel stacks when processing interrupts" 303 default y 304 help 305 If you say Y here the kernel will use separate kernel stacks 306 for handling hard and soft interrupts. This can help avoid 307 overflowing the process kernel stacks. 308 309config HOTPLUG_CPU 310 bool 311 default y if SMP 312 313config ARCH_SELECT_MEMORY_MODEL 314 def_bool y 315 depends on 64BIT 316 317config ARCH_SPARSEMEM_ENABLE 318 def_bool y 319 depends on 64BIT 320 321config ARCH_FLATMEM_ENABLE 322 def_bool y 323 324config ARCH_SPARSEMEM_DEFAULT 325 def_bool y 326 depends on ARCH_SPARSEMEM_ENABLE 327 328source "kernel/Kconfig.hz" 329 330config COMPAT 331 def_bool y 332 depends on 64BIT 333 select COMPAT_BINFMT_ELF if BINFMT_ELF 334 335config SYSVIPC_COMPAT 336 def_bool y 337 depends on COMPAT && SYSVIPC 338 339config AUDIT_ARCH 340 def_bool y 341 342config NR_CPUS 343 int "Maximum number of CPUs (2-32)" 344 range 2 32 345 depends on SMP 346 default "4" 347 348config KEXEC 349 bool "Kexec system call" 350 select KEXEC_CORE 351 help 352 kexec is a system call that implements the ability to shutdown your 353 current kernel, and to start another kernel. It is like a reboot 354 but it is independent of the system firmware. And like a reboot 355 you can start any kernel with it, not just Linux. 356 357 It is an ongoing process to be certain the hardware in a machine 358 shutdown, so do not be surprised if this code does not 359 initially work for you. 360 361config KEXEC_FILE 362 bool "kexec file based system call" 363 select KEXEC_CORE 364 select KEXEC_ELF 365 help 366 This enables the kexec_file_load() System call. This is 367 file based and takes file descriptors as system call argument 368 for kernel and initramfs as opposed to list of segments as 369 accepted by previous system call. 370 371endmenu 372 373 374source "drivers/parisc/Kconfig" 375 376config SECCOMP 377 def_bool y 378 prompt "Enable seccomp to safely compute untrusted bytecode" 379 ---help--- 380 This kernel feature is useful for number crunching applications 381 that may need to compute untrusted bytecode during their 382 execution. By using pipes or other transports made available to 383 the process as file descriptors supporting the read/write 384 syscalls, it's possible to isolate those applications in 385 their own address space using seccomp. Once seccomp is 386 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled 387 and the task is only allowed to execute a few safe syscalls 388 defined by each seccomp mode. 389 390 If unsure, say Y. Only embedded should say N here. 391