arch/parisc/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0
   2 config PARISC
   3         def_bool y
   4         select ARCH_MIGHT_HAVE_PC_PARPORT
   5         select HAVE_IDE
   6         select HAVE_OPROFILE
   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_UBSAN_SANITIZE_ALL
  14         select ARCH_WANTS_UBSAN_NO_NULL
  15         select ARCH_SUPPORTS_MEMORY_FAILURE
  16         select RTC_CLASS
  17         select RTC_DRV_GENERIC
  18         select INIT_ALL_POSSIBLE
  19         select HAVE_MEMBLOCK
  20         select NO_BOOTMEM
  21         select BUG
  22         select BUILDTIME_EXTABLE_SORT
  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 GENERIC_SCHED_CLOCK
  50         select HAVE_UNSTABLE_SCHED_CLOCK if SMP
  51         select GENERIC_CLOCKEVENTS
  52         select ARCH_NO_COHERENT_DMA_MMAP
  53         select CPU_NO_EFFICIENT_FFS
  54
  55         help
  56           The PA-RISC microprocessor is designed by Hewlett-Packard and used
  57           in many of their workstations & servers (HP9000 700 and 800 series,
  58           and later HP3000 series).  The PA-RISC Linux project home page is
  59           at <http://www.parisc-linux.org/>.
  60
  61 config CPU_BIG_ENDIAN
  62         def_bool y
  63
  64 config MMU
  65         def_bool y
  66
  67 config STACK_GROWSUP
  68         def_bool y
  69
  70 config GENERIC_LOCKBREAK
  71         bool
  72         default y
  73         depends on SMP && PREEMPT
  74
  75 config RWSEM_GENERIC_SPINLOCK
  76         def_bool y
  77
  78 config RWSEM_XCHGADD_ALGORITHM
  79         bool
  80
  81 config ARCH_HAS_ILOG2_U32
  82         bool
  83         default n
  84
  85 config ARCH_HAS_ILOG2_U64
  86         bool
  87         default n
  88
  89 config GENERIC_BUG
  90         bool
  91         default y
  92         depends on BUG
  93
  94 config GENERIC_HWEIGHT
  95         bool
  96         default y
  97
  98 config GENERIC_CALIBRATE_DELAY
  99         bool
 100         default y
 101
 102 config TIME_LOW_RES
 103         bool
 104         depends on SMP
 105         default y
 106
 107 # unless you want to implement ACPI on PA-RISC ... ;-)
 108 config PM
 109         bool
 110
 111 config STACKTRACE_SUPPORT
 112         def_bool y
 113
 114 config NEED_DMA_MAP_STATE
 115         def_bool y
 116
 117 config NEED_SG_DMA_LENGTH
 118         def_bool y
 119
 120 config ISA_DMA_API
 121         bool
 122
 123 config ARCH_MAY_HAVE_PC_FDC
 124         bool
 125         depends on BROKEN
 126         default y
 127
 128 config PGTABLE_LEVELS
 129         int
 130         default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
 131         default 2
 132
 133 config SYS_SUPPORTS_HUGETLBFS
 134         def_bool y if PA20
 135
 136 source "init/Kconfig"
 137
 138 source "kernel/Kconfig.freezer"
 139
 140
 141 menu "Processor type and features"
 142
 143 choice
 144         prompt "Processor type"
 145         default PA7000
 146
 147 config PA7000
 148         bool "PA7000/PA7100"
 149         ---help---
 150           This is the processor type of your CPU.  This information is
 151           used for optimizing purposes.  In order to compile a kernel
 152           that can run on all 32-bit PA CPUs (albeit not optimally fast),
 153           you can specify "PA7000" here.
 154
 155           Specifying "PA8000" here will allow you to select a 64-bit kernel
 156           which is required on some machines.
 157
 158 config PA7100LC
 159         bool "PA7100LC"
 160         help
 161           Select this option for the PCX-L processor, as used in the
 162           712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
 163           D200, D210, D300, D310 and E-class
 164
 165 config PA7200
 166         bool "PA7200"
 167         help
 168           Select this option for the PCX-T' processor, as used in the
 169           C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
 170           K100, K200, K210, K220, K400, K410 and K420
 171
 172 config PA7300LC
 173         bool "PA7300LC"
 174         help
 175           Select this option for the PCX-L2 processor, as used in the
 176           744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
 177           D220, D230, D320 and D330.
 178
 179 config PA8X00
 180         bool "PA8000 and up"
 181         help
 182           Select this option for PCX-U to PCX-W2 processors.
 183
 184 endchoice
 185
 186 # Define implied options from the CPU selection here
 187
 188 config PA20
 189         def_bool y
 190         depends on PA8X00
 191
 192 config PA11
 193         def_bool y
 194         depends on PA7000 || PA7100LC || PA7200 || PA7300LC
 195
 196 config PREFETCH
 197         def_bool y
 198         depends on PA8X00 || PA7200
 199
 200 config MLONGCALLS
 201         bool "Enable the -mlong-calls compiler option for big kernels"
 202         def_bool y if (!MODULES)
 203         depends on PA8X00
 204         help
 205           If you configure the kernel to include many drivers built-in instead
 206           as modules, the kernel executable may become too big, so that the
 207           linker will not be able to resolve some long branches and fails to link
 208           your vmlinux kernel. In that case enabling this option will help you
 209           to overcome this limit by using the -mlong-calls compiler option.
 210
 211           Usually you want to say N here, unless you e.g. want to build
 212           a kernel which includes all necessary drivers built-in and which can
 213           be used for TFTP booting without the need to have an initrd ramdisk.
 214
 215           Enabling this option will probably slow down your kernel.
 216
 217 config 64BIT
 218         bool "64-bit kernel"
 219         depends on PA8X00
 220         help
 221           Enable this if you want to support 64bit kernel on PA-RISC platform.
 222
 223           At the moment, only people willing to use more than 2GB of RAM,
 224           or having a 64bit-only capable PA-RISC machine should say Y here.
 225
 226           Since there is no 64bit userland on PA-RISC, there is no point to
 227           enable this option otherwise. The 64bit kernel is significantly bigger
 228           and slower than the 32bit one.
 229
 230 choice
 231         prompt "Kernel page size"
 232         default PARISC_PAGE_SIZE_4KB
 233
 234 config PARISC_PAGE_SIZE_4KB
 235         bool "4KB"
 236         help
 237           This lets you select the page size of the kernel.  For best
 238           performance, a page size of 16KB is recommended.  For best
 239           compatibility with 32bit applications, a page size of 4KB should be
 240           selected (the vast majority of 32bit binaries work perfectly fine
 241           with a larger page size).
 242
 243           4KB                For best 32bit compatibility
 244           16KB               For best performance
 245           64KB               For best performance, might give more overhead.
 246
 247           If you don't know what to do, choose 4KB.
 248
 249 config PARISC_PAGE_SIZE_16KB
 250         bool "16KB"
 251         depends on PA8X00
 252
 253 config PARISC_PAGE_SIZE_64KB
 254         bool "64KB"
 255         depends on PA8X00
 256
 257 endchoice
 258
 259 config PARISC_SELF_EXTRACT
 260         bool "Build kernel as self-extracting executable"
 261         default y
 262         help
 263           Say Y if you want to build the parisc kernel as a kind of
 264           self-extracting executable.
 265
 266           If you say N here, the kernel will be compressed with gzip
 267           which can be loaded by the palo bootloader directly too.
 268
 269           If you don't know what to do here, say Y.
 270
 271 config SMP
 272         bool "Symmetric multi-processing support"
 273         ---help---
 274           This enables support for systems with more than one CPU. If you have
 275           a system with only one CPU, say N. If you have a system with more
 276           than one CPU, say Y.
 277
 278           If you say N here, the kernel will run on uni- and multiprocessor
 279           machines, but will use only one CPU of a multiprocessor machine. If
 280           you say Y here, the kernel will run on many, but not all,
 281           uniprocessor machines. On a uniprocessor machine, the kernel
 282           will run faster if you say N here.
 283
 284           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 285           available at <http://www.tldp.org/docs.html#howto>.
 286
 287           If you don't know what to do here, say N.
 288
 289 config PARISC_CPU_TOPOLOGY
 290         bool "Support cpu topology definition"
 291         depends on SMP
 292         default y
 293         help
 294           Support PARISC cpu topology definition.
 295
 296 config SCHED_MC
 297         bool "Multi-core scheduler support"
 298         depends on PARISC_CPU_TOPOLOGY && PA8X00
 299         help
 300           Multi-core scheduler support improves the CPU scheduler's decision
 301           making when dealing with multi-core CPU chips at a cost of slightly
 302           increased overhead in some places. If unsure say N here.
 303
 304 config IRQSTACKS
 305         bool "Use separate kernel stacks when processing interrupts"
 306         default y
 307         help
 308           If you say Y here the kernel will use separate kernel stacks
 309           for handling hard and soft interrupts.  This can help avoid
 310           overflowing the process kernel stacks.
 311
 312 config HOTPLUG_CPU
 313         bool
 314         default y if SMP
 315
 316 config ARCH_SELECT_MEMORY_MODEL
 317         def_bool y
 318         depends on 64BIT
 319
 320 config ARCH_DISCONTIGMEM_ENABLE
 321         def_bool y
 322         depends on 64BIT
 323
 324 config ARCH_FLATMEM_ENABLE
 325         def_bool y
 326
 327 config ARCH_DISCONTIGMEM_DEFAULT
 328         def_bool y
 329         depends on ARCH_DISCONTIGMEM_ENABLE
 330
 331 config NODES_SHIFT
 332         int
 333         default "3"
 334         depends on NEED_MULTIPLE_NODES
 335
 336 source "kernel/Kconfig.preempt"
 337 source "kernel/Kconfig.hz"
 338 source "mm/Kconfig"
 339
 340 config COMPAT
 341         def_bool y
 342         depends on 64BIT
 343
 344 config SYSVIPC_COMPAT
 345         def_bool y
 346         depends on COMPAT && SYSVIPC
 347
 348 config AUDIT_ARCH
 349         def_bool y
 350
 351 config NR_CPUS
 352         int "Maximum number of CPUs (2-32)"
 353         range 2 32
 354         depends on SMP
 355         default "32"
 356
 357 endmenu
 358
 359
 360 source "drivers/parisc/Kconfig"
 361
 362
 363 menu "Executable file formats"
 364
 365 source "fs/Kconfig.binfmt"
 366
 367 endmenu
 368
 369 source "net/Kconfig"
 370
 371 source "drivers/Kconfig"
 372
 373 source "fs/Kconfig"
 374
 375 source "arch/parisc/Kconfig.debug"
 376
 377 config SECCOMP
 378         def_bool y
 379         prompt "Enable seccomp to safely compute untrusted bytecode"
 380         ---help---
 381           This kernel feature is useful for number crunching applications
 382           that may need to compute untrusted bytecode during their
 383           execution. By using pipes or other transports made available to
 384           the process as file descriptors supporting the read/write
 385           syscalls, it's possible to isolate those applications in
 386           their own address space using seccomp. Once seccomp is
 387           enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
 388           and the task is only allowed to execute a few safe syscalls
 389           defined by each seccomp mode.
 390
 391           If unsure, say Y. Only embedded should say N here.
 392
 393 source "security/Kconfig"
 394
 395 source "crypto/Kconfig"
 396
 397 source "lib/Kconfig"