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