linux-yocto/arch/parisc/Kconfig

SPDX-License-Identifier: GPL-2.0

config PARISC def_bool y select ALTERNATE_USER_ADDRESS_SPACE select ARCH_32BIT_OFF_T if !64BIT select ARCH_MIGHT_HAVE_PC_PARPORT select HAVE_FUNCTION_TRACER select HAVE_FUNCTION_GRAPH_TRACER select HAVE_SYSCALL_TRACEPOINTS select ARCH_WANT_FRAME_POINTERS select ARCH_HAS_CPU_CACHE_ALIASING select ARCH_HAS_DMA_ALLOC if PA11 select ARCH_HAS_DMA_OPS select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_STRICT_KERNEL_RWX select ARCH_HAS_STRICT_MODULE_RWX select ARCH_HAS_UBSAN select ARCH_HAS_PTE_SPECIAL select ARCH_NO_SG_CHAIN select ARCH_SPLIT_ARG64 if !64BIT select ARCH_SUPPORTS_HUGETLBFS if PA20 select ARCH_SUPPORTS_MEMORY_FAILURE select ARCH_STACKWALK select ARCH_HAS_CACHE_LINE_SIZE select ARCH_HAS_DEBUG_VM_PGTABLE select HAVE_RELIABLE_STACKTRACE select RTC_CLASS select RTC_DRV_GENERIC select INIT_ALL_POSSIBLE select BUG select HAVE_KERNEL_UNCOMPRESSED select HAVE_PCI select HAVE_PERF_EVENTS select HAVE_KERNEL_BZIP2 select HAVE_KERNEL_GZIP select HAVE_KERNEL_LZ4 select HAVE_KERNEL_LZMA select HAVE_KERNEL_LZO select HAVE_KERNEL_XZ select GENERIC_ATOMIC64 if !64BIT select GENERIC_IRQ_PROBE select GENERIC_PCI_IOMAP select GENERIC_IOREMAP select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_SMP_IDLE_THREAD select GENERIC_ARCH_TOPOLOGY if SMP select GENERIC_CPU_DEVICES if !SMP select GENERIC_LIB_DEVMEM_IS_ALLOWED select SYSCTL_ARCH_UNALIGN_ALLOW select SYSCTL_ARCH_UNALIGN_NO_WARN select SYSCTL_EXCEPTION_TRACE select HAVE_MOD_ARCH_SPECIFIC select MODULES_USE_ELF_RELA select CLONE_BACKWARDS select TTY # Needed for pdc_cons.c select HAS_IOPORT if PCI || EISA select HAVE_DEBUG_STACKOVERFLOW select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT select HAVE_ARCH_MMAP_RND_BITS select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_HASH # select HAVE_ARCH_JUMP_LABEL # select HAVE_ARCH_JUMP_LABEL_RELATIVE select HAVE_ARCH_KFENCE select HAVE_ARCH_SECCOMP_FILTER select HAVE_ARCH_TRACEHOOK select HAVE_EBPF_JIT select ARCH_WANT_DEFAULT_BPF_JIT select HAVE_REGS_AND_STACK_ACCESS_API select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU select GENERIC_SCHED_CLOCK select GENERIC_IRQ_MIGRATION if SMP select HAVE_UNSTABLE_SCHED_CLOCK if SMP select GENERIC_CLOCKEVENTS select CPU_NO_EFFICIENT_FFS select THREAD_INFO_IN_TASK select NEED_DMA_MAP_STATE select NEED_SG_DMA_LENGTH select HAVE_ARCH_KGDB select HAVE_KPROBES select HAVE_KRETPROBES select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1) select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE select HAVE_KPROBES_ON_FTRACE select HAVE_DYNAMIC_FTRACE_WITH_REGS select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS select TRACE_IRQFLAGS_SUPPORT select HAVE_FUNCTION_DESCRIPTORS if 64BIT select PCI_MSI_ARCH_FALLBACKS if PCI_MSI

help
  The PA-RISC microprocessor is designed by Hewlett-Packard and used
  in many of their workstations & servers (HP9000 700 and 800 series,
  and later HP3000 series).  The PA-RISC Linux project home page is
  at <https://parisc.wiki.kernel.org>.

config CPU_BIG_ENDIAN def_bool y

config MMU def_bool y

config STACK_GROWSUP def_bool y

config GENERIC_LOCKBREAK bool default y depends on SMP && PREEMPTION

config ARCH_HAS_ILOG2_U32 bool default n

config ARCH_HAS_ILOG2_U64 bool default n

config GENERIC_BUG def_bool y depends on BUG select GENERIC_BUG_RELATIVE_POINTERS if 64BIT

config GENERIC_BUG_RELATIVE_POINTERS bool

config GENERIC_HWEIGHT bool default y

config GENERIC_CALIBRATE_DELAY bool default y

config TIME_LOW_RES bool depends on SMP default y

config ARCH_MMAP_RND_BITS_MIN default 18 if 64BIT default 8

config ARCH_MMAP_RND_COMPAT_BITS_MIN default 8

config ARCH_MMAP_RND_BITS_MAX default 18 if 64BIT default 13

config ARCH_MMAP_RND_COMPAT_BITS_MAX default 13

unless you want to implement ACPI on PA-RISC ... ;-)

config PM bool

config STACKTRACE_SUPPORT def_bool y

config LOCKDEP_SUPPORT bool default y

config ISA_DMA_API bool

config ARCH_MAY_HAVE_PC_FDC bool depends on BROKEN default y

config PGTABLE_LEVELS int default 3 if 64BIT && PARISC_PAGE_SIZE_4KB default 2

menu "Processor type and features"

choice prompt "Processor type" default PA7000 if "$(ARCH)" = "parisc"

config PA7000 bool "PA7000/PA7100" if "$(ARCH)" = "parisc" help This is the processor type of your CPU. This information is used for optimizing purposes. In order to compile a kernel that can run on all 32-bit PA CPUs (albeit not optimally fast), you can specify "PA7000" here.

  Specifying "PA8000" here will allow you to select a 64-bit kernel
  which is required on some machines.

config PA7100LC bool "PA7100LC" if "$(ARCH)" = "parisc" help Select this option for the PCX-L processor, as used in the 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748, D200, D210, D300, D310 and E-class

config PA7200 bool "PA7200" if "$(ARCH)" = "parisc" help Select this option for the PCX-T' processor, as used in the C100, C110, J100, J110, J210XC, D250, D260, D350, D360, K100, K200, K210, K220, K400, K410 and K420

config PA7300LC bool "PA7300LC" if "$(ARCH)" = "parisc" help Select this option for the PCX-L2 processor, as used in the 744, A180, B132L, B160L, B180L, C132L, C160L, C180L, D220, D230, D320 and D330.

config PA8X00 bool "PA8000 and up" help Select this option for PCX-U to PCX-W2 processors.

endchoice

Define implied options from the CPU selection here

config PA20 def_bool y depends on PA8X00

config PA11 def_bool y depends on PA7000 || PA7100LC || PA7200 || PA7300LC select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYNC_DMA_FOR_DEVICE

config PREFETCH def_bool y depends on PA8X00 || PA7200

config PARISC_HUGE_KERNEL def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST

config MLONGCALLS bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL depends on PA8X00 default PARISC_HUGE_KERNEL help If you configure the kernel to include many drivers built-in instead as modules, the kernel executable may become too big, so that the linker will not be able to resolve some long branches and fails to link your vmlinux kernel. In that case enabling this option will help you to overcome this limit by using the -mlong-calls compiler option.

  Usually you want to say N here, unless you e.g. want to build
  a kernel which includes all necessary drivers built-in and which can
  be used for TFTP booting without the need to have an initrd ramdisk.

  Enabling this option will probably slow down your kernel.

config 64BIT bool "64-bit kernel" if "$(ARCH)" = "parisc" depends on PA8X00 default "$(ARCH)" = "parisc64" help Enable this if you want to support 64bit kernel on PA-RISC platform.

  At the moment, only people willing to use more than 2GB of RAM,
  or having a 64bit-only capable PA-RISC machine should say Y here.

  Since there is no 64bit userland on PA-RISC, there is no point to
  enable this option otherwise. The 64bit kernel is significantly bigger
  and slower than the 32bit one.

choice prompt "Kernel page size" default PARISC_PAGE_SIZE_4KB

config PARISC_PAGE_SIZE_4KB bool "4KB" select HAVE_PAGE_SIZE_4KB help This lets you select the page size of the kernel. For best performance, a page size of 16KB is recommended. For best compatibility with 32bit applications, a page size of 4KB should be selected (the vast majority of 32bit binaries work perfectly fine with a larger page size).

  4KB                For best 32bit compatibility
  16KB               For best performance
  64KB               For best performance, might give more overhead.

  If you don't know what to do, choose 4KB.

config PARISC_PAGE_SIZE_16KB bool "16KB" select HAVE_PAGE_SIZE_16KB depends on PA8X00 && BROKEN && !KFENCE

config PARISC_PAGE_SIZE_64KB bool "64KB" select HAVE_PAGE_SIZE_64KB depends on PA8X00 && BROKEN && !KFENCE

endchoice

config SMP bool "Symmetric multi-processing support" help This enables support for systems with more than one CPU. If you have a system with only one CPU, say N. If you have a system with more than one CPU, say Y.

  If you say N here, the kernel will run on uni- and multiprocessor
  machines, but will use only one CPU of a multiprocessor machine.
  On a uniprocessor machine, the kernel will run faster if you say N.

  See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
  available at <https://www.tldp.org/docs.html#howto>.

  If you don't know what to do here, say N.

config SCHED_MC bool "Multi-core scheduler support" depends on GENERIC_ARCH_TOPOLOGY && PA8X00 help Multi-core scheduler support improves the CPU scheduler's decision making when dealing with multi-core CPU chips at a cost of slightly increased overhead in some places. If unsure say N here.

config IRQSTACKS bool "Use separate kernel stacks when processing interrupts" default y help If you say Y here the kernel will use separate kernel stacks for handling hard and soft interrupts. This can help avoid overflowing the process kernel stacks.

config HOTPLUG_CPU bool default y if SMP

config ARCH_SELECT_MEMORY_MODEL def_bool y depends on 64BIT

config ARCH_SPARSEMEM_ENABLE def_bool y depends on 64BIT

config ARCH_FLATMEM_ENABLE def_bool y

config ARCH_SPARSEMEM_DEFAULT def_bool y depends on ARCH_SPARSEMEM_ENABLE

source "kernel/Kconfig.hz"

config COMPAT def_bool y depends on 64BIT

config AUDIT_ARCH def_bool y

config NR_CPUS int "Maximum number of CPUs (2-32)" range 2 32 depends on SMP default "8" if 64BIT default "16"

endmenu

config ARCH_SUPPORTS_KEXEC def_bool y

config ARCH_SUPPORTS_KEXEC_FILE def_bool y

config ARCH_SELECTS_KEXEC_FILE def_bool y depends on KEXEC_FILE select KEXEC_ELF

source "drivers/parisc/Kconfig"