openloongarch-linux-5.10/arch/loongarch/Kconfig

# SPDX-License-Identifier: GPL-2.0
config LOONGARCH
	bool
	default y
	select ACPI_MCFG if ACPI
	select ACPI_SYSTEM_POWER_STATES_SUPPORT	if ACPI
	select ARCH_BINFMT_ELF_STATE
	select ARCH_HAS_ACPI_TABLE_UPGRADE	if ACPI
	select ARCH_HAS_PTE_SPECIAL if !32BIT
	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
	select ARCH_INLINE_READ_LOCK if !PREEMPTION
	select ARCH_INLINE_READ_LOCK_BH if !PREEMPTION
	select ARCH_INLINE_READ_LOCK_IRQ if !PREEMPTION
	select ARCH_INLINE_READ_LOCK_IRQSAVE if !PREEMPTION
	select ARCH_INLINE_READ_UNLOCK if !PREEMPTION
	select ARCH_INLINE_READ_UNLOCK_BH if !PREEMPTION
	select ARCH_INLINE_READ_UNLOCK_IRQ if !PREEMPTION
	select ARCH_INLINE_READ_UNLOCK_IRQRESTORE if !PREEMPTION
	select ARCH_INLINE_WRITE_LOCK if !PREEMPTION
	select ARCH_INLINE_WRITE_LOCK_BH if !PREEMPTION
	select ARCH_INLINE_WRITE_LOCK_IRQ if !PREEMPTION
	select ARCH_INLINE_WRITE_LOCK_IRQSAVE if !PREEMPTION
	select ARCH_INLINE_WRITE_UNLOCK if !PREEMPTION
	select ARCH_INLINE_WRITE_UNLOCK_BH if !PREEMPTION
	select ARCH_INLINE_WRITE_UNLOCK_IRQ if !PREEMPTION
	select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE if !PREEMPTION
	select ARCH_INLINE_SPIN_TRYLOCK if !PREEMPTION
	select ARCH_INLINE_SPIN_TRYLOCK_BH if !PREEMPTION
	select ARCH_INLINE_SPIN_LOCK if !PREEMPTION
	select ARCH_INLINE_SPIN_LOCK_BH if !PREEMPTION
	select ARCH_INLINE_SPIN_LOCK_IRQ if !PREEMPTION
	select ARCH_INLINE_SPIN_LOCK_IRQSAVE if !PREEMPTION
	select ARCH_INLINE_SPIN_UNLOCK if !PREEMPTION
	select ARCH_INLINE_SPIN_UNLOCK_BH if !PREEMPTION
	select ARCH_INLINE_SPIN_UNLOCK_IRQ if !PREEMPTION
	select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE if !PREEMPTION
	select ARCH_SUPPORTS_ACPI
	select ARCH_SUPPORTS_NUMA_BALANCING
	select ARCH_SUPPORTS_UPROBES
	select ARCH_USE_BUILTIN_BSWAP
	select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
	select ARCH_USE_QUEUED_RWLOCKS
	select ARCH_USE_QUEUED_SPINLOCKS
	select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT
	select BUILDTIME_TABLE_SORT
	select COMMON_CLK
	select CPU_PM
	select GENERIC_ATOMIC64 if !64BIT
	select GENERIC_CLOCKEVENTS
	select GENERIC_CMOS_UPDATE
	select GENERIC_CPU_AUTOPROBE
	select GENERIC_ENTRY
	select GENERIC_FIND_FIRST_BIT
	select GENERIC_GETTIMEOFDAY
	select GENERIC_IRQ_MULTI_HANDLER
	select GENERIC_IRQ_PROBE
	select GENERIC_IRQ_SHOW
	select GENERIC_LIB_ASHLDI3
	select GENERIC_LIB_ASHRDI3
	select GENERIC_LIB_CMPDI2
	select GENERIC_LIB_LSHRDI3
	select GENERIC_LIB_UCMPDI2
	select GENERIC_PCI_IOMAP
	select GENERIC_SCHED_CLOCK
	select GENERIC_SMP_IDLE_THREAD
	select GENERIC_TIME_VSYSCALL
	select HANDLE_DOMAIN_IRQ
	select HAVE_ARCH_AUDITSYSCALL
	select HAVE_ARCH_COMPILER_H
	select HAVE_ARCH_JUMP_LABEL
	select HAVE_ARCH_KASAN if 64BIT
	select HAVE_ARCH_KGDB
	select HAVE_ARCH_MMAP_RND_BITS if MMU
	select HAVE_ARCH_SECCOMP_FILTER
	select HAVE_ARCH_TRACEHOOK
	select HAVE_ARCH_TRANSPARENT_HUGEPAGE
	select HAVE_ASM_MODVERSIONS
	select HAVE_CONTEXT_TRACKING
	select HAVE_COPY_THREAD_TLS
	select HAVE_C_RECORDMCOUNT
	select HAVE_DEBUG_KMEMLEAK
	select HAVE_DEBUG_STACKOVERFLOW
	select HAVE_DMA_CONTIGUOUS
	select HAVE_DYNAMIC_FTRACE
	select HAVE_DYNAMIC_FTRACE_WITH_REGS
	select HAVE_EBPF_JIT if 64BIT
	select HAVE_EXIT_THREAD
	select HAVE_FAST_GUP
	select HAVE_FTRACE_MCOUNT_RECORD
	select HAVE_FUNCTION_GRAPH_TRACER
	select HAVE_FUNCTION_TRACER
	select HAVE_FUTEX_CMPXCHG if FUTEX
	select HAVE_GENERIC_VDSO
	select HAVE_IOREMAP_PROT
	select HAVE_IRQ_EXIT_ON_IRQ_STACK
	select HAVE_IRQ_TIME_ACCOUNTING
	select HAVE_KPROBES
	select HAVE_KPROBES_ON_FTRACE
	select HAVE_KRETPROBES
	select HAVE_LIVEPATCH
	select HAVE_MEMBLOCK
	select HAVE_MEMBLOCK_NODE_MAP
	select HAVE_MOD_ARCH_SPECIFIC
	select HAVE_NMI
	select HAVE_PERF_EVENTS
	select HAVE_PERF_REGS
	select HAVE_PERF_USER_STACK_DUMP
	select HAVE_REGS_AND_STACK_ACCESS_API
	select HAVE_RELIABLE_STACKTRACE
	select HAVE_RSEQ
	select HAVE_STACKPROTECTOR
	select HAVE_STACK_VALIDATION
	select HAVE_SYSCALL_TRACEPOINTS
	select HAVE_TIF_NOHZ
	select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
	select IOREMAP_WITH_TLB
	select IRQ_FORCED_THREADING
	select MODULES_USE_ELF_RELA if MODULES && 64BIT
	select MODULES_USE_ELF_REL if MODULES
	select PCI_DOMAINS_GENERIC if PCI
	select PCI_ECAM if ACPI
	select PCI_MSI_ARCH_FALLBACKS
	select PERF_USE_VMALLOC
	select RTC_LIB
	select SYSCTL_EXCEPTION_TRACE
	select LOONGARCH_CRC32_SUPPORT

menu "Machine selection"

choice
	prompt "System type"
	default MACH_LOONGSON64

config MACH_LOONGSON64
	bool "Loongson 64-bit family of machines"
	select ARCH_SPARSEMEM_ENABLE
	select HAVE_PCI
	select PCI
	select IRQ_LOONGARCH_CPU
	select NR_CPUS_DEFAULT_4
	select SPARSE_IRQ
	select SYS_HAS_CPU_LOONGSON64
	select SYS_SUPPORTS_SMP
	select SYS_SUPPORTS_ZBOOT
	select SYS_SUPPORTS_HOTPLUG_CPU
	select SYS_SUPPORTS_NUMA
	select SYS_SUPPORTS_64BIT_KERNEL
	select SYS_SUPPORTS_HIGHMEM
	select SYS_SUPPORTS_RELOCATABLE
	select ZONE_DMA32
	select USE_OF
	select BUILTIN_DTB
	help
	  This enables the support of Loongson 64-bit family of machines. These
	  machines are based on new Loongson-3 processors (Old Loongson is MIPS
	  compatible, while new Loongson is based on LoongArch ISA).

endchoice

source "arch/loongarch/loongson64/Kconfig"

endmenu

config GENERIC_HWEIGHT
	bool
	default y

config GENERIC_CALIBRATE_DELAY
	bool
	default y

config SCHED_OMIT_FRAME_POINTER
	bool
	default y

config ARCH_SUPPORTS_UPROBES
	bool

config SYS_SUPPORTS_HOTPLUG_CPU
	bool

config GENERIC_CSUM
	def_bool y

config LOONGARCH_CRC32_SUPPORT
	bool
	default y

config SYS_SUPPORTS_RELOCATABLE
	bool
	help
	 Selected if the platform supports relocating the kernel.

config SYS_SUPPORTS_HUGETLBFS
	def_bool y

config L1_CACHE_SHIFT
	int
	default "6"

menu "CPU selection"

choice
	prompt "CPU type"
	default CPU_LOONGSON64

config CPU_LOONGSON64
	bool "Loongson 64-bit CPU"
	depends on SYS_HAS_CPU_LOONGSON64
	select ARCH_HAS_PHYS_TO_DMA
	select CPU_SUPPORTS_64BIT_KERNEL
	select CPU_SUPPORTS_HIGHMEM
	select CPU_SUPPORTS_LSX
	select CPU_SUPPORTS_LASX
	select GPIOLIB
	select SWIOTLB
	select ARCH_SUPPORTS_ATOMIC_RMW
	help
	  The Loongson 64-bit processor implements the LoongArch64 (the 64-bit
	  version of LoongArch) instruction set.

endchoice

config SYS_SUPPORTS_ZBOOT
	bool
	select HAVE_KERNEL_GZIP
	select HAVE_KERNEL_BZIP2
	select HAVE_KERNEL_LZ4
	select HAVE_KERNEL_LZMA
	select HAVE_KERNEL_LZO
	select HAVE_KERNEL_XZ
	select HAVE_KERNEL_ZSTD

config SYS_HAS_CPU_LOONGSON64
	bool

endmenu

config SYS_SUPPORTS_32BIT_KERNEL
	bool
config SYS_SUPPORTS_64BIT_KERNEL
	bool
config CPU_SUPPORTS_32BIT_KERNEL
	bool
config CPU_SUPPORTS_64BIT_KERNEL
	bool
config HARDWARE_WATCHPOINTS
	bool
	default y

menu "Kernel type"

choice
	prompt "Kernel code model"
	help
	  You should only select this option if you have a workload that
	  actually benefits from 64-bit processing or if your machine has
	  large memory.  You will only be presented a single option in this
	  menu if your system does not support both 32-bit and 64-bit kernels.

config 32BIT
	bool "32-bit kernel"
	depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
	help
	  Select this option if you want to build a 32-bit kernel.

config 64BIT
	bool "64-bit kernel"
	depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
	help
	  Select this option if you want to build a 64-bit kernel.

endchoice

config FIX_EARLYCON_MEM
	def_bool y

config PAGE_SIZE_4KB
	bool

config PAGE_SIZE_16KB
	bool

config PAGE_SIZE_64KB
	bool

config PGTABLE_2LEVEL
	bool

config PGTABLE_3LEVEL
	bool

config PGTABLE_4LEVEL
	bool

config PGTABLE_LEVELS
	int
	default 2 if PGTABLE_2LEVEL
	default 3 if PGTABLE_3LEVEL
	default 4 if PGTABLE_4LEVEL

choice
	prompt "Page Table Layout"
	default 16KB_2LEVEL if 32BIT
	default 16KB_3LEVEL if 64BIT
	help
	  Allows choosing the page table layout, which is a combination
	  of page size and page table levels. The virtual memory address
	  space bits are determined by the page table layout.

config 4KB_3LEVEL
	bool "4KB with 3 levels"
	select PAGE_SIZE_4KB
	select PGTABLE_3LEVEL
	help
	  This option selects 4KB page size with 3 level page tables, which
	  support a maximum 39 bits of application virtual memory.

config 4KB_4LEVEL
	bool "4KB with 4 levels"
	select PAGE_SIZE_4KB
	select PGTABLE_4LEVEL
	help
	  This option selects 4KB page size with 4 level page tables, which
	  support a maximum 48 bits of application virtual memory.

config 16KB_2LEVEL
	bool "16KB with 2 levels"
	select PAGE_SIZE_16KB
	select PGTABLE_2LEVEL
	help
	  This option selects 16KB page size with 2 level page tables, which
	  support a maximum 36 bits of application virtual memory.

config 16KB_3LEVEL
	bool "16KB with 3 levels"
	select PAGE_SIZE_16KB
	select PGTABLE_3LEVEL
	help
	  This option selects 16KB page size with 3 level page tables, which
	  support a maximum 47 bits of application virtual memory.

config 64KB_2LEVEL
	bool "64KB with 2 levels"
	select PAGE_SIZE_64KB
	select PGTABLE_2LEVEL
	help
	  This option selects 64KB page size with 2 level page tables, which
	  support a maximum 42 bits of application virtual memory.

config 64KB_3LEVEL
	bool "64KB with 3 levels"
	select PAGE_SIZE_64KB
	select PGTABLE_3LEVEL
	help
	  This option selects 64KB page size with 3 level page tables, which
	  support a maximum 55 bits of application virtual memory.

endchoice

config FORCE_MAX_ZONEORDER
	int "Maximum zone order"
	range 14 64 if PAGE_SIZE_64KB
	default "14" if PAGE_SIZE_64KB
	range 12 64 if PAGE_SIZE_16KB
	default "12" if PAGE_SIZE_16KB
	range 11 64
	default "11"
	help
	  The kernel memory allocator divides physically contiguous memory
	  blocks into "zones", where each zone is a power of two number of
	  pages.  This option selects the largest power of two that the kernel
	  keeps in the memory allocator.  If you need to allocate very large
	  blocks of physically contiguous memory, then you may need to
	  increase this value.

	  This config option is actually maximum order plus one. For example,
	  a value of 11 means that the largest free memory block is 2^10 pages.

	  The page size is not necessarily 4KB.  Keep this in mind
	  when choosing a value for this option.

config CPU_HAS_PREFETCH
	bool
	default y

config CPU_HAS_FPU
	bool
	default y

config CPU_HAS_LSX
	bool "Support for the Loongson SIMD Extension"
	depends on CPU_SUPPORTS_LSX
	depends on 64BIT
	help
	  Loongson SIMD Extension (LSX) introduces 128 bit wide vector registers
	  and a set of SIMD instructions to operate on them. When this option
	  is enabled the kernel will support allocating & switching LSX
	  vector register contexts. If you know that your kernel will only be
	  running on CPUs which do not support LSX or that your userland will
	  not be making use of it then you may wish to say N here to reduce
	  the size & complexity of your kernel.

	  If unsure, say Y.

config CPU_HAS_LASX
	bool "Support for the Loongson Advanced SIMD Extension"
	depends on CPU_SUPPORTS_LASX
	depends on 64BIT && CPU_HAS_LSX
	help
	  Loongson Advanced SIMD Extension is 256 bit wide SIMD extension.

	  If unsure, say Y.

#
# - Highmem only makes sense for the 32-bit kernel.
# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
#   know they might have memory configurations that could make use of highmem
#   support.
#
config HIGHMEM
	bool "High Memory Support"
	depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM

config CPU_SUPPORTS_HIGHMEM
	bool

config SYS_SUPPORTS_HIGHMEM
	bool

config CPU_SUPPORTS_LSX
	bool

config CPU_SUPPORTS_LASX
	bool

config IOREMAP_WITH_TLB
	bool

config ARCH_SELECT_MEMORY_MODEL
	def_bool y

config ARCH_FLATMEM_ENABLE
	def_bool y
	depends on !NUMA

config ARCH_SPARSEMEM_ENABLE
	def_bool y
	select SPARSEMEM_VMEMMAP_ENABLE
	help
	  Say Y to support efficient handling of sparse physical memory,
	  for architectures which are either NUMA (Non-Uniform Memory Access)
	  or have huge holes in the physical address space for other reasons.
	  See <file:Documentation/vm/numa.rst> for more.

config NUMA
	bool "NUMA Support"
	depends on SYS_SUPPORTS_NUMA
	select ACPI_NUMA if ACPI
	help
	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
	  Access).  This option improves performance on systems with more
	  than two nodes; on two node systems it is generally better to
	  leave it disabled; on single node systems disable this option
	  disabled.

config SYS_SUPPORTS_NUMA
	bool

config RELOCATABLE
	bool "Relocatable kernel"
	depends on SYS_SUPPORTS_RELOCATABLE
	help
	  This builds a kernel image that retains relocation information
	  so it can be loaded someplace besides the default 1MB.
	  The relocations make the kernel binary about 15% larger,
	  but are discarded at runtime

config RELOCATION_TABLE_SIZE
	hex "Relocation table size"
	depends on RELOCATABLE
	range 0x0 0x01000000
	default "0x00100000"
	help
	  A table of relocation data will be appended to the kernel binary
	  and parsed at boot to fix up the relocated kernel.

	  This option allows the amount of space reserved for the table to be
	  adjusted, although the default of 1Mb should be ok in most cases.

	  The build will fail and a valid size suggested if this is too small.

	  If unsure, leave at the default value.

config RANDOMIZE_BASE
	bool "Randomize the address of the kernel image"
	depends on RELOCATABLE
	help
	   Randomizes the physical and virtual address at which the
	   kernel image is loaded, as a security feature that
	   deters exploit attempts relying on knowledge of the location
	   of kernel internals.

	   Entropy is generated using any coprocessor 0 registers available.

	   The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.

	   If unsure, say N.

config RANDOMIZE_BASE_MAX_OFFSET
	hex "Maximum kASLR offset" if EXPERT
	depends on RANDOMIZE_BASE
	range 0x0 0x40000000 if 64BIT
	range 0x0 0x08000000
	default "0x01000000"
	help
	  When kASLR is active, this provides the maximum offset that will
	  be applied to the kernel image. It should be set according to the
	  amount of physical RAM available in the target system minus
	  PHYSICAL_START and must be a power of 2.

	  This is limited by the size of KPRANGE1, 256Mb on 32-bit or 1Gb with
	  64-bit. The default is 16Mb.

config NODES_SHIFT
	int
	default "6"
	depends on NEED_MULTIPLE_NODES

config USE_PERCPU_NUMA_NODE_ID
	def_bool y
	depends on NUMA

config HAVE_SETUP_PER_CPU_AREA
	def_bool y
	depends on NUMA

config NEED_PER_CPU_EMBED_FIRST_CHUNK
	def_bool y
	depends on NUMA

config NEED_PER_CPU_PAGE_FIRST_CHUNK
	def_bool y
	depends on NUMA

config DMI
	bool "Enable DMI scanning"
	select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
	default y
	help
	  Enabled scanning of DMI to identify machine quirks. Say Y
	  here unless you have verified that your setup is not
	  affected by entries in the DMI blacklist. Required by PNP
	  BIOS code.

config EFI
	bool "EFI runtime service support"
	select UCS2_STRING
	select EFI_RUNTIME_WRAPPERS
	help
	  This enables the kernel to use EFI runtime services that are
	  available (such as the EFI variable services).

	  This option is only useful on systems that have EFI firmware.
	  In addition, you should use the latest ELILO loader available
	  at <http://elilo.sourceforge.net> in order to take advantage
	  of EFI runtime services. However, even with this option, the
	  resultant kernel should continue to boot on existing non-EFI
	  platforms.

config EFI_STUB
	bool "EFI stub support"
	default y
	depends on EFI
	help
	  This kernel feature allows a vmlinuz.efi to be loaded directly
	  by EFI firmware without the use of a bootloader.

config SMP
	bool "Multi-Processing support"
	depends on SYS_SUPPORTS_SMP
	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. If
	  you say Y here, the kernel will run on many, but not all,
	  uniprocessor machines. On a uniprocessor machine, the kernel
	  will run faster if you say N here.

	  People using multiprocessor machines who say Y here should also say
	  Y to "Enhanced Real Time Clock Support", below.

	  See also the SMP-HOWTO available at
	  <http://www.tldp.org/docs.html#howto>.

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

config HOTPLUG_CPU
	bool "Support for hot-pluggable CPUs"
	select GENERIC_IRQ_MIGRATION
	depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
	help
	  Say Y here to allow turning CPUs off and on. CPUs can be
	  controlled through /sys/devices/system/cpu.
	  (Note: power management support will enable this option
	    automatically on SMP systems. )
	  Say N if you want to disable CPU hotplug.

config SYS_SUPPORTS_SMP
	bool

config NR_CPUS_DEFAULT_4
	bool

config NR_CPUS_DEFAULT_8
	bool

config NR_CPUS_DEFAULT_16
	bool

config NR_CPUS_DEFAULT_32
	bool

config NR_CPUS_DEFAULT_64
	bool

config NR_CPUS
	int "Maximum number of CPUs (2-256)"
	range 2 256
	depends on SMP
	default "4" if NR_CPUS_DEFAULT_4
	default "8" if NR_CPUS_DEFAULT_8
	default "16" if NR_CPUS_DEFAULT_16
	default "32" if NR_CPUS_DEFAULT_32
	default "64" if NR_CPUS_DEFAULT_64
	help
	  This allows you to specify the maximum number of CPUs which this
	  kernel will support.  The maximum supported value is 32 for 32-bit
	  kernel and 64 for 64-bit kernels; the minimum value which makes
	  sense is 1 for Qemu (useful only for kernel debugging purposes)
	  and 2 for all others.

	  This is purely to save memory - each supported CPU adds
	  approximately eight kilobytes to the kernel image.  For best
	  performance should round up your number of processors to the next
	  power of two.

source "kernel/Kconfig.hz"

config KEXEC
	bool "Kexec system call"
	select KEXEC_CORE
	help
	  kexec is a system call that implements the ability to shutdown your
	  current kernel, and to start another kernel.  It is like a reboot
	  but it is independent of the system firmware.   And like a reboot
	  you can start any kernel with it, not just Linux.

	  The name comes from the similarity to the exec system call.

	  It is an ongoing process to be certain the hardware in a machine
	  is properly shutdown, so do not be surprised if this code does not
	  initially work for you.  As of this writing the exact hardware
	  interface is strongly in flux, so no good recommendation can be
	  made.

config CRASH_DUMP
	bool "Kernel crash dumps"
	help
	  Generate crash dump after being started by kexec.
	  This should be normally only set in special crash dump kernels
	  which are loaded in the main kernel with kexec-tools into
	  a specially reserved region and then later executed after
	  a crash by kdump/kexec. The crash dump kernel must be compiled
	  to a memory address not used by the main kernel or firmware using
	  PHYSICAL_START.

config PHYSICAL_START
	hex "Physical address where the kernel is loaded"
	default "0xa4000000" if 32BIT
	default "0x9000000004000000" if 64BIT
	depends on CRASH_DUMP
	help
	  This gives the KPRANGE1 or XKPRANGE address where the kernel is loaded.
	  If you plan to use kernel for capturing the crash dump change
	  this value to start of the reserved region (the "X" value as
	  specified in the "crashkernel=YM@XM" command line boot parameter
	  passed to the panic-ed kernel).

config SECCOMP
	bool "Enable seccomp to safely compute untrusted bytecode"
	depends on PROC_FS
	default y
	help
	  This kernel feature is useful for number crunching applications
	  that may need to compute untrusted bytecode during their
	  execution. By using pipes or other transports made available to
	  the process as file descriptors supporting the read/write
	  syscalls, it's possible to isolate those applications in
	  their own address space using seccomp. Once seccomp is
	  enabled via /proc/<pid>/seccomp, it cannot be disabled
	  and the task is only allowed to execute a few safe syscalls
	  defined by each seccomp mode.

	  If unsure, say Y. Only embedded should say N here.

config USE_OF
	bool
	select OF
	select OF_EARLY_FLATTREE
	select IRQ_DOMAIN

config BUILTIN_DTB
	bool

source "kernel/livepatch/Kconfig"

endmenu

config ARCH_ENABLE_MEMORY_HOTPLUG
	def_bool y
	depends on LOONGARCH

config ARCH_ENABLE_MEMORY_HOTREMOVE
	def_bool y
	depends on MEMORY_HOTPLUG

config ARCH_ENABLE_THP_MIGRATION
	def_bool y
	depends on TRANSPARENT_HUGEPAGE

config ARCH_MEMORY_PROBE
	def_bool y
	depends on MEMORY_HOTPLUG

config HAVE_ARCH_NODEDATA_EXTENSION
	def_bool y
	depends on NUMA && ARCH_ENABLE_MEMORY_HOTPLUG

config LOCKDEP_SUPPORT
	bool
	default y

config STACKTRACE_SUPPORT
	bool
	default y

config TRACE_IRQFLAGS_SUPPORT
	bool
	default y

config MMU
	bool
	default y

config ARCH_MMAP_RND_BITS_MIN
	default 12 if 64BIT
	default 8

config ARCH_MMAP_RND_BITS_MAX
	default 18 if 64BIT
	default 15

config ZONE_DMA
	bool

config ZONE_DMA32
	bool

menu "Bus options"

endmenu

menu "Power management options"

config ARCH_SUSPEND_POSSIBLE
	def_bool y
	depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP

config ARCH_HIBERNATION_POSSIBLE
	def_bool y
	depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP

source "kernel/power/Kconfig"
source "drivers/acpi/Kconfig"

endmenu

menu "CPU Power Management"

source "drivers/cpufreq/Kconfig"

endmenu

source "drivers/firmware/Kconfig"

menu "Loongson Miscellaneous Config"

config LOONGSON_MEM_MAP_NEED_FIX
	bool "Some board mmap from uboot is wrong. Enable this to remove uboot mmap"
	default n

config LOONGSON_MMC_HIGH_PERFORMANCE
	bool "Change MMC to HS200 mode"
	default n
	help
	  If you want to experience a high-performance MMC,
	  Select This config.
endmenu