1# SPDX-License-Identifier: GPL-2.0 2config PARISC 3 def_bool y 4 select ALTERNATE_USER_ADDRESS_SPACE 5 select ARCH_32BIT_OFF_T if !64BIT 6 select ARCH_MIGHT_HAVE_PC_PARPORT 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_STRICT_MODULE_RWX 14 select ARCH_HAS_UBSAN_SANITIZE_ALL 15 select ARCH_HAS_PTE_SPECIAL 16 select ARCH_NO_SG_CHAIN 17 select ARCH_SUPPORTS_HUGETLBFS if PA20 18 select ARCH_SUPPORTS_MEMORY_FAILURE 19 select ARCH_STACKWALK 20 select ARCH_HAS_DEBUG_VM_PGTABLE 21 select HAVE_RELIABLE_STACKTRACE 22 select DMA_OPS 23 select RTC_CLASS 24 select RTC_DRV_GENERIC 25 select INIT_ALL_POSSIBLE 26 select BUG 27 select BUILDTIME_TABLE_SORT 28 select HAVE_PCI 29 select HAVE_PERF_EVENTS 30 select HAVE_KERNEL_BZIP2 31 select HAVE_KERNEL_GZIP 32 select HAVE_KERNEL_LZ4 33 select HAVE_KERNEL_LZMA 34 select HAVE_KERNEL_LZO 35 select HAVE_KERNEL_XZ 36 select GENERIC_ATOMIC64 if !64BIT 37 select GENERIC_IRQ_PROBE 38 select GENERIC_PCI_IOMAP 39 select ARCH_HAVE_NMI_SAFE_CMPXCHG 40 select GENERIC_SMP_IDLE_THREAD 41 select GENERIC_ARCH_TOPOLOGY if SMP 42 select GENERIC_CPU_DEVICES if !SMP 43 select GENERIC_LIB_DEVMEM_IS_ALLOWED 44 select SYSCTL_ARCH_UNALIGN_ALLOW 45 select SYSCTL_EXCEPTION_TRACE 46 select HAVE_MOD_ARCH_SPECIFIC 47 select MODULES_USE_ELF_RELA 48 select CLONE_BACKWARDS 49 select TTY # Needed for pdc_cons.c 50 select HAS_IOPORT if PCI || EISA 51 select HAVE_DEBUG_STACKOVERFLOW 52 select HAVE_ARCH_AUDITSYSCALL 53 select HAVE_ARCH_HASH 54 select HAVE_ARCH_JUMP_LABEL 55 select HAVE_ARCH_JUMP_LABEL_RELATIVE 56 select HAVE_ARCH_KFENCE 57 select HAVE_ARCH_SECCOMP_FILTER 58 select HAVE_ARCH_TRACEHOOK 59 select HAVE_REGS_AND_STACK_ACCESS_API 60 select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU 61 select GENERIC_SCHED_CLOCK 62 select GENERIC_IRQ_MIGRATION if SMP 63 select HAVE_UNSTABLE_SCHED_CLOCK if SMP 64 select LEGACY_TIMER_TICK 65 select CPU_NO_EFFICIENT_FFS 66 select THREAD_INFO_IN_TASK 67 select NEED_DMA_MAP_STATE 68 select NEED_SG_DMA_LENGTH 69 select HAVE_ARCH_KGDB 70 select HAVE_KPROBES 71 select HAVE_KRETPROBES 72 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1) 73 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE 74 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE 75 select HAVE_KPROBES_ON_FTRACE 76 select HAVE_DYNAMIC_FTRACE_WITH_REGS 77 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS 78 select TRACE_IRQFLAGS_SUPPORT 79 select HAVE_FUNCTION_DESCRIPTORS if 64BIT 80 81 help 82 The PA-RISC microprocessor is designed by Hewlett-Packard and used 83 in many of their workstations & servers (HP9000 700 and 800 series, 84 and later HP3000 series). The PA-RISC Linux project home page is 85 at <https://parisc.wiki.kernel.org>. 86 87config CPU_BIG_ENDIAN 88 def_bool y 89 90config MMU 91 def_bool y 92 93config STACK_GROWSUP 94 def_bool y 95 96config GENERIC_LOCKBREAK 97 bool 98 default y 99 depends on SMP && PREEMPTION 100 101config ARCH_HAS_ILOG2_U32 102 bool 103 default n 104 105config ARCH_HAS_ILOG2_U64 106 bool 107 default n 108 109config GENERIC_BUG 110 bool 111 default y 112 depends on BUG 113 114config GENERIC_HWEIGHT 115 bool 116 default y 117 118config GENERIC_CALIBRATE_DELAY 119 bool 120 default y 121 122config TIME_LOW_RES 123 bool 124 depends on SMP 125 default y 126 127# unless you want to implement ACPI on PA-RISC ... ;-) 128config PM 129 bool 130 131config STACKTRACE_SUPPORT 132 def_bool y 133 134config LOCKDEP_SUPPORT 135 bool 136 default y 137 138config ISA_DMA_API 139 bool 140 141config ARCH_MAY_HAVE_PC_FDC 142 bool 143 depends on BROKEN 144 default y 145 146config PGTABLE_LEVELS 147 int 148 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB 149 default 2 150 151menu "Processor type and features" 152 153choice 154 prompt "Processor type" 155 default PA7000 if "$(ARCH)" = "parisc" 156 157config PA7000 158 bool "PA7000/PA7100" if "$(ARCH)" = "parisc" 159 help 160 This is the processor type of your CPU. This information is 161 used for optimizing purposes. In order to compile a kernel 162 that can run on all 32-bit PA CPUs (albeit not optimally fast), 163 you can specify "PA7000" here. 164 165 Specifying "PA8000" here will allow you to select a 64-bit kernel 166 which is required on some machines. 167 168config PA7100LC 169 bool "PA7100LC" if "$(ARCH)" = "parisc" 170 help 171 Select this option for the PCX-L processor, as used in the 172 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, 173 D200, D210, D300, D310 and E-class 174 175config PA7200 176 bool "PA7200" if "$(ARCH)" = "parisc" 177 help 178 Select this option for the PCX-T' processor, as used in the 179 C100, C110, J100, J110, J210XC, D250, D260, D350, D360, 180 K100, K200, K210, K220, K400, K410 and K420 181 182config PA7300LC 183 bool "PA7300LC" if "$(ARCH)" = "parisc" 184 help 185 Select this option for the PCX-L2 processor, as used in the 186 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, 187 D220, D230, D320 and D330. 188 189config PA8X00 190 bool "PA8000 and up" 191 help 192 Select this option for PCX-U to PCX-W2 processors. 193 194endchoice 195 196# Define implied options from the CPU selection here 197 198config PA20 199 def_bool y 200 depends on PA8X00 201 202config PA11 203 def_bool y 204 depends on PA7000 || PA7100LC || PA7200 || PA7300LC 205 select ARCH_HAS_SYNC_DMA_FOR_CPU 206 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 207 208config PREFETCH 209 def_bool y 210 depends on PA8X00 || PA7200 211 212config PARISC_HUGE_KERNEL 213 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST 214 215config MLONGCALLS 216 def_bool y if PARISC_HUGE_KERNEL 217 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL 218 depends on PA8X00 219 help 220 If you configure the kernel to include many drivers built-in instead 221 as modules, the kernel executable may become too big, so that the 222 linker will not be able to resolve some long branches and fails to link 223 your vmlinux kernel. In that case enabling this option will help you 224 to overcome this limit by using the -mlong-calls compiler option. 225 226 Usually you want to say N here, unless you e.g. want to build 227 a kernel which includes all necessary drivers built-in and which can 228 be used for TFTP booting without the need to have an initrd ramdisk. 229 230 Enabling this option will probably slow down your kernel. 231 232config 64BIT 233 def_bool y if "$(ARCH)" = "parisc64" 234 bool "64-bit kernel" if "$(ARCH)" = "parisc" 235 depends on PA8X00 236 help 237 Enable this if you want to support 64bit kernel on PA-RISC platform. 238 239 At the moment, only people willing to use more than 2GB of RAM, 240 or having a 64bit-only capable PA-RISC machine should say Y here. 241 242 Since there is no 64bit userland on PA-RISC, there is no point to 243 enable this option otherwise. The 64bit kernel is significantly bigger 244 and slower than the 32bit one. 245 246choice 247 prompt "Kernel page size" 248 default PARISC_PAGE_SIZE_4KB 249 250config PARISC_PAGE_SIZE_4KB 251 bool "4KB" 252 help 253 This lets you select the page size of the kernel. For best 254 performance, a page size of 16KB is recommended. For best 255 compatibility with 32bit applications, a page size of 4KB should be 256 selected (the vast majority of 32bit binaries work perfectly fine 257 with a larger page size). 258 259 4KB For best 32bit compatibility 260 16KB For best performance 261 64KB For best performance, might give more overhead. 262 263 If you don't know what to do, choose 4KB. 264 265config PARISC_PAGE_SIZE_16KB 266 bool "16KB" 267 depends on PA8X00 && BROKEN && !KFENCE 268 269config PARISC_PAGE_SIZE_64KB 270 bool "64KB" 271 depends on PA8X00 && BROKEN && !KFENCE 272 273endchoice 274 275config SMP 276 bool "Symmetric multi-processing support" 277 help 278 This enables support for systems with more than one CPU. If you have 279 a system with only one CPU, say N. If you have a system with more 280 than one CPU, say Y. 281 282 If you say N here, the kernel will run on uni- and multiprocessor 283 machines, but will use only one CPU of a multiprocessor machine. 284 On a uniprocessor machine, the kernel will run faster if you say N. 285 286 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 287 available at <https://www.tldp.org/docs.html#howto>. 288 289 If you don't know what to do here, say N. 290 291config SCHED_MC 292 bool "Multi-core scheduler support" 293 depends on GENERIC_ARCH_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 332config AUDIT_ARCH 333 def_bool y 334 335config NR_CPUS 336 int "Maximum number of CPUs (2-32)" 337 range 2 32 338 depends on SMP 339 default "8" if 64BIT 340 default "16" 341 342config KEXEC 343 bool "Kexec system call" 344 select KEXEC_CORE 345 help 346 kexec is a system call that implements the ability to shutdown your 347 current kernel, and to start another kernel. It is like a reboot 348 but it is independent of the system firmware. And like a reboot 349 you can start any kernel with it, not just Linux. 350 351 It is an ongoing process to be certain the hardware in a machine 352 shutdown, so do not be surprised if this code does not 353 initially work for you. 354 355config KEXEC_FILE 356 bool "kexec file based system call" 357 select KEXEC_CORE 358 select KEXEC_ELF 359 help 360 This enables the kexec_file_load() System call. This is 361 file based and takes file descriptors as system call argument 362 for kernel and initramfs as opposed to list of segments as 363 accepted by previous system call. 364 365endmenu 366 367source "drivers/parisc/Kconfig" 368