arch/sw_64/Kconfig

# SPDX-License-Identifier: GPL-2.0
config SW64
	bool
	default y
	select ACPI
	select ACPI_REDUCED_HARDWARE_ONLY
	select ARCH_HAS_ELF_RANDOMIZE
	select ARCH_HAS_PHYS_TO_DMA
	select ARCH_HAS_PTE_SPECIAL
	select ARCH_HAS_SG_CHAIN
	select ARCH_HAVE_NMI_SAFE_CMPXCHG
	select ARCH_INLINE_READ_LOCK
	select ARCH_INLINE_READ_LOCK_BH
	select ARCH_INLINE_READ_LOCK_IRQ
	select ARCH_INLINE_READ_LOCK_IRQSAVE
	select ARCH_INLINE_READ_UNLOCK
	select ARCH_INLINE_READ_UNLOCK_BH
	select ARCH_INLINE_READ_UNLOCK_IRQ
	select ARCH_INLINE_READ_UNLOCK_IRQRESTORE
	select ARCH_INLINE_SPIN_LOCK
	select ARCH_INLINE_SPIN_LOCK_BH
	select ARCH_INLINE_SPIN_LOCK_IRQ
	select ARCH_INLINE_SPIN_LOCK_IRQSAVE
	select ARCH_INLINE_SPIN_TRYLOCK
	select ARCH_INLINE_SPIN_TRYLOCK_BH
	select ARCH_INLINE_SPIN_UNLOCK
	select ARCH_INLINE_SPIN_UNLOCK_BH
	select ARCH_INLINE_SPIN_UNLOCK_IRQ
	select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
	select ARCH_INLINE_WRITE_LOCK
	select ARCH_INLINE_WRITE_LOCK_BH
	select ARCH_INLINE_WRITE_LOCK_IRQ
	select ARCH_INLINE_WRITE_LOCK_IRQSAVE
	select ARCH_INLINE_WRITE_UNLOCK
	select ARCH_INLINE_WRITE_UNLOCK_BH
	select ARCH_INLINE_WRITE_UNLOCK_IRQ
	select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
	select ARCH_NO_PREEMPT
	select ARCH_SUPPORTS_ACPI
	select ARCH_SUPPORTS_ATOMIC_RMW
	select ARCH_SUPPORTS_NUMA_BALANCING
	select ARCH_SUPPORTS_UPROBES
	select ARCH_USE_CMPXCHG_LOCKREF
	select ARCH_USE_QUEUED_RWLOCKS
	select ARCH_USE_QUEUED_SPINLOCKS
	select ARCH_WANT_FRAME_POINTERS
	select ARCH_WANT_IPC_PARSE_VERSION
	select AUDIT_ARCH
	select COMMON_CLK
	select DMA_OPS if PCI
	select GENERIC_CLOCKEVENTS
	select GENERIC_IRQ_LEGACY
	select GENERIC_IRQ_MIGRATION if SMP
	select GENERIC_IRQ_PROBE
	select GENERIC_IRQ_SHOW
	select GENERIC_PCI_IOMAP if PCI
	select GENERIC_SMP_IDLE_THREAD
	select GENERIC_STRNCPY_FROM_USER
	select GENERIC_STRNLEN_USER
	select GENERIC_TIME_VSYSCALL
	select HANDLE_DOMAIN_IRQ
	select HARDIRQS_SW_RESEND
	select HAVE_ARCH_AUDITSYSCALL
	select HAVE_ARCH_JUMP_LABEL
	select HAVE_ARCH_KGDB
	select HAVE_ARCH_SECCOMP_FILTER
	select HAVE_ARCH_TRACEHOOK
	select HAVE_ARCH_TRANSPARENT_HUGEPAGE
	select HAVE_ASM_MODVERSIONS
	select HAVE_C_RECORDMCOUNT
	select HAVE_DEBUG_BUGVERBOSE
	select HAVE_DYNAMIC_FTRACE
	select HAVE_EBPF_JIT
	select HAVE_FAST_GUP
	select HAVE_FTRACE_MCOUNT_RECORD
	select HAVE_FUNCTION_GRAPH_TRACER
	select HAVE_FUNCTION_TRACER
	select HAVE_IDE
	select HAVE_KPROBES
	select HAVE_KRETPROBES
	select HAVE_MEMBLOCK
	select HAVE_MEMBLOCK_NODE_MAP
	select HAVE_MOD_ARCH_SPECIFIC
	select HAVE_OPROFILE
	select HAVE_PCI
	select HAVE_PCSPKR_PLATFORM
	select HAVE_PERF_EVENTS
	select HAVE_PERF_REGS
	select HAVE_PERF_USER_STACK_DUMP
	select HAVE_REGS_AND_STACK_ACCESS_API
	select HAVE_SYSCALL_TRACEPOINTS
	select IRQ_FORCED_THREADING
	select MEMORY_HOTPLUG_SPARSE if MEMORY_HOTPLUG
	select MODULES_USE_ELF_RELA
	select NO_BOOTMEM
	select OF_EARLY_FLATTREE if OF
	select OLD_SIGSUSPEND
	select PCI_MSI_ARCH_FALLBACKS
	select SET_FS
	select SPARSEMEM_EXTREME if SPARSEMEM
	select SWIOTLB

config LOCKDEP_SUPPORT
	def_bool y

config 64BIT
	def_bool y

config MMU
	bool
	default y

config PGTABLE_LEVELS
	int
	default 4

config SYS_SUPPORTS_HUGETLBFS
	def_bool y

config RWSEM_GENERIC_SPINLOCK
	bool

config RWSEM_XCHGADD_ALGORITHM
	bool
	default y

config ARCH_ENABLE_MEMORY_HOTPLUG
	bool
	default y

config ARCH_ENABLE_MEMORY_HOTREMOVE
	bool
	default y

config ARCH_HAS_ILOG2_U32
	bool
	default n

config ARCH_HAS_ILOG2_U64
	bool
	default n

config GENERIC_GPIO
	bool

config GENERIC_CALIBRATE_DELAY
	bool
	default y

config ZONE_DMA32
	bool
	default y

config NEED_DMA_MAP_STATE
	def_bool y

config NEED_SG_DMA_LENGTH
	def_bool y

config ARCH_WANT_HUGE_PMD_SHARE
	def_bool y

config GENERIC_ISA_DMA
	bool
	default y

config NONCACHE_PAGE
	bool
	depends on SW64
	default y


config AUDIT_ARCH
	bool

config SYS_HAS_EARLY_PRINTK
	bool

menu "System setup"

menu "Machine Configuration"

choice
	prompt "Subarchitecture Configuration"

config SUBARCH_C3B
	bool "C3B"

endchoice

choice
	prompt "Chipset Family"

config SW64_CHIP3
	bool "Chip3"
	depends on SUBARCH_C3B
endchoice

choice
	prompt "Runtime System"
	depends on SW64_CHIP3
	default SW64_ASIC

config SW64_FPGA
	bool "FPGA"
	help
	  Support for chip3 FPGA.

config SW64_SIM
	bool "Hardware Simulator"
	help
	  Support for chip3 hardware simulator.

config SW64_ASIC
	bool "ASIC"
	help
	  Support for chip3 asic.

endchoice

config SW64_CHIP3_ASIC_DEBUG
        bool "Debug Support for Chip3 Asic"
        depends on SW64_ASIC
        help
          Used for debug

config CPUFREQ_DEBUGFS
        bool "CPU Frequency debugfs interface for Chip3 Asic"
        depends on SW64_CHIP3 && DEBUG_FS
        help
          Turns on the DebugFS interface for CPU Frequency.

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

choice
	prompt "Platform Type"

config PLATFORM_XUELANG
	bool "Xuelang"
	depends on SW64_CHIP3
	select SPARSE_IRQ
	select SYS_HAS_EARLY_PRINTK
	select SW64_INTC_V2
	help
	  Sunway chip3 board chipset

endchoice

config MIGHT_HAVE_PC_SERIO
	bool "Use PC serio device i8042"
	select ARCH_MIGHT_HAVE_PC_SERIO
	default n

endmenu

config LOCK_MEMB
	bool "Insert mem barrier before lock instruction"
	default y

menu "CPU Frequency scaling"

config CPU_FREQ
	bool "CPU Frequency scaling"
	select SRCU
	help
	  CPU Frequency scaling allows you to change the clock speed of
	  CPUs on the fly. This is a nice method to save power, because
	  the lower the CPU clock speed, the less power the CPU consumes.

	  Note that this driver doesn't automatically change the CPU
	  clock speed, you need to either enable a dynamic cpufreq governor
	  (see below) after boot, or use a userspace tool.

	  For details, take a look at <file:Documentation/cpu-freq>.

	  If in doubt, say N.

if CPU_FREQ

config SW64_CPUFREQ
        bool "sw64 CPU Frequency interface for Chip3 Asic"
	depends on SW64_CHIP3
	default y
        help
          Turns on the interface for SW64_CPU Frequency.

config SW64_CPUAUTOPLUG
	bool "sw64 CPU Autoplug interface"
	depends on SW64_CPUFREQ
	default y
	help
          Turns on the interface for SW64_CPU CPUAUTOPLUG.

config CPU_FREQ_GOV_ATTR_SET
	bool

config CPU_FREQ_GOV_COMMON
	select CPU_FREQ_GOV_ATTR_SET
	select IRQ_WORK
	bool

config CPU_FREQ_BOOST_SW
	bool
	depends on THERMAL

config CPU_FREQ_STAT
	bool "CPU frequency transition statistics"
	help
	  Export CPU frequency statistics information through sysfs.

	  If in doubt, say N.

choice
	prompt "Default CPUFreq governor"
	default CPU_FREQ_DEFAULT_GOV_USERSPACE if ARM_SA1100_CPUFREQ || ARM_SA1110_CPUFREQ
	default CPU_FREQ_DEFAULT_GOV_PERFORMANCE
	help
	  This option sets which CPUFreq governor shall be loaded at
	  startup. If in doubt, select 'performance'.

config CPU_FREQ_DEFAULT_GOV_PERFORMANCE
	bool "performance"
	select CPU_FREQ_GOV_PERFORMANCE
	help
	  Use the CPUFreq governor 'performance' as default. This sets
	  the frequency statically to the highest frequency supported by
	  the CPU.

config CPU_FREQ_DEFAULT_GOV_POWERSAVE
	bool "powersave"
	select CPU_FREQ_GOV_POWERSAVE
	help
	  Use the CPUFreq governor 'powersave' as default. This sets
	  the frequency statically to the lowest frequency supported by
	  the CPU.

config CPU_FREQ_DEFAULT_GOV_USERSPACE
	bool "userspace"
	select CPU_FREQ_GOV_USERSPACE
	help
	  Use the CPUFreq governor 'userspace' as default. This allows
	  you to set the CPU frequency manually or when a userspace
	  program shall be able to set the CPU dynamically without having
	  to enable the userspace governor manually.

config CPU_FREQ_DEFAULT_GOV_ONDEMAND
	bool "ondemand"
	select CPU_FREQ_GOV_ONDEMAND
	select CPU_FREQ_GOV_PERFORMANCE
	help
	  Use the CPUFreq governor 'ondemand' as default. This allows
	  you to get a full dynamic frequency capable system by simply
	  loading your cpufreq low-level hardware driver.
	  Be aware that not all cpufreq drivers support the ondemand
	  governor. If unsure have a look at the help section of the
	  driver. Fallback governor will be the performance governor.

config CPU_FREQ_DEFAULT_GOV_CONSERVATIVE
	bool "conservative"
	select CPU_FREQ_GOV_CONSERVATIVE
	select CPU_FREQ_GOV_PERFORMANCE
	help
	  Use the CPUFreq governor 'conservative' as default. This allows
	  you to get a full dynamic frequency capable system by simply
	  loading your cpufreq low-level hardware driver.
	  Be aware that not all cpufreq drivers support the conservative
	  governor. If unsure have a look at the help section of the
	  driver. Fallback governor will be the performance governor.

config CPU_FREQ_DEFAULT_GOV_SCHEDUTIL
	bool "schedutil"
	depends on SMP
	select CPU_FREQ_GOV_SCHEDUTIL
	select CPU_FREQ_GOV_PERFORMANCE
	help
	  Use the 'schedutil' CPUFreq governor by default. If unsure,
	  have a look at the help section of that governor. The fallback
	  governor will be 'performance'.

endchoice

config CPU_FREQ_GOV_PERFORMANCE
	tristate "'performance' governor"
	help
	  This cpufreq governor sets the frequency statically to the
	  highest available CPU frequency.

	  To compile this driver as a module, choose M here: the
	  module will be called cpufreq_performance.

	  If in doubt, say Y.

config CPU_FREQ_GOV_POWERSAVE
	tristate "'powersave' governor"
	help
	  This cpufreq governor sets the frequency statically to the
	  lowest available CPU frequency.

	  To compile this driver as a module, choose M here: the
	  module will be called cpufreq_powersave.

	  If in doubt, say Y.

config CPU_FREQ_GOV_USERSPACE
	tristate "'userspace' governor for userspace frequency scaling"
	help
	  Enable this cpufreq governor when you either want to set the
	  CPU frequency manually or when a userspace program shall
	  be able to set the CPU dynamically, like on LART
	  <http://www.lartmaker.nl/>.

	  To compile this driver as a module, choose M here: the
	  module will be called cpufreq_userspace.

	  For details, take a look at <file:Documentation/cpu-freq/>.

	  If in doubt, say Y.

config CPU_FREQ_GOV_ONDEMAND
	tristate "'ondemand' cpufreq policy governor"
	select CPU_FREQ_GOV_COMMON
	help
	  'ondemand' - This driver adds a dynamic cpufreq policy governor.
	  The governor does a periodic polling and
	  changes frequency based on the CPU utilization.
	  The support for this governor depends on CPU capability to
	  do fast frequency switching (i.e, very low latency frequency
	  transitions).

	  To compile this driver as a module, choose M here: the
	  module will be called cpufreq_ondemand.

	  For details, take a look at linux/Documentation/cpu-freq.

	  If in doubt, say N.

config CPU_FREQ_GOV_CONSERVATIVE
	tristate "'conservative' cpufreq governor"
	depends on CPU_FREQ
	select CPU_FREQ_GOV_COMMON
	help
	  'conservative' - this driver is rather similar to the 'ondemand'
	  governor both in its source code and its purpose, the difference is
	  its optimisation for better suitability in a battery powered
	  environment.  The frequency is gracefully increased and decreased
	  rather than jumping to 100% when speed is required.

	  If you have a desktop machine then you should really be considering
	  the 'ondemand' governor instead, however if you are using a laptop,
	  PDA or even an AMD64 based computer (due to the unacceptable
	  step-by-step latency issues between the minimum and maximum frequency
	  transitions in the CPU) you will probably want to use this governor.

	  To compile this driver as a module, choose M here: the
	  module will be called cpufreq_conservative.

	  For details, take a look at linux/Documentation/cpu-freq.

	  If in doubt, say N.

config CPU_FREQ_GOV_SCHEDUTIL
	bool "'schedutil' cpufreq policy governor"
	depends on CPU_FREQ && SMP
	select CPU_FREQ_GOV_ATTR_SET
	select IRQ_WORK
	help
	  This governor makes decisions based on the utilization data provided
	  by the scheduler.  It sets the CPU frequency to be proportional to
	  the utilization/capacity ratio coming from the scheduler.  If the
	  utilization is frequency-invariant, the new frequency is also
	  proportional to the maximum available frequency.  If that is not the
	  case, it is proportional to the current frequency of the CPU.  The
	  frequency tipping point is at utilization/capacity equal to 80% in
	  both cases.

	  If in doubt, say N.

comment "CPU frequency scaling drivers"

config CPUFREQ_DT
	tristate "Generic DT based cpufreq driver"
	depends on HAVE_CLK && OF
	# if CPU_THERMAL is on and THERMAL=m, CPUFREQ_DT cannot be =y:
	depends on !CPU_THERMAL || THERMAL
	select CPUFREQ_DT_PLATDEV
	select PM_OPP
	help
	  This adds a generic DT based cpufreq driver for frequency management.
	  It supports both uniprocessor (UP) and symmetric multiprocessor (SMP)
	  systems.

	  If in doubt, say N.

config CPUFREQ_DT_PLATDEV
	bool
	help
	  This adds a generic DT based cpufreq platdev driver for frequency
	  management.  This creates a 'cpufreq-dt' platform device, on the
	  supported platforms.

	  If in doubt, say N.

endif
endmenu

# clear all implied options (don't want default values for those):
# Most of these machines have ISA slots; not exactly sure which don't,
# and this doesn't activate hordes of code, so do it always.
config ISA
	bool
	default y
	help
	  Find out whether you have ISA slots on your motherboard.  ISA is the
	  name of a bus system, i.e. the way the CPU talks to the other stuff
	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
	  newer boards don't support it.  If you have ISA, say Y, otherwise N.

config ISA_DMA_API
	bool
	default y

config PCI_DOMAINS
	def_bool PCI

config PCI_SYSCALL
	def_bool PCI

config IOMMU_HELPER
	def_bool PCI

config PHYSICAL_START
	hex "Physical address where the kernel starts"
	default "0x900000"
	help
	  This gives the physical address where the kernel starts, and it
	  is 0x10000 before _text. 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 KEXEC
	bool "Kexec system call (EXPERIMENTAL)"
	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 (EXPERIMENTAL)"
	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 SECCOMP
	def_bool y
	prompt "Enable seccomp to safely compute untrusted bytecode"
	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 prctl(PR_SET_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 GENERIC_HWEIGHT
	bool
	default y

config LOCK_FIXUP
	bool "fix up the lock"
	depends on SW64
	help
	  Add an instruction("memb\n") to ensure the correctness of the lock.


config SMP
	bool "Symmetric multi-processing support"
	depends on SW64
	select USE_GENERIC_SMP_HELPERS
	help
	  This enables support for systems with more than one CPU. If you have
	  a system with only one CPU, like most personal computers, say N. If
	  you have a system with more than one CPU, say Y.

	  If you say N here, the kernel will run on single 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,
	  singleprocessor machines. On a singleprocessor machine, the kernel
	  will run faster if you say N here.

	  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 ARCH_PROC_KCORE_TEXT
        def_bool y

config HAVE_DEC_LOCK
	bool "Use arch-specified dec_and_lock"
	depends on SMP && !NUMA
	default y

config TRACE_IRQFLAGS_SUPPORT
	def_bool y

config ARCH_SUPPORTS_UPROBES
	def_bool y

config NR_CPUS
	int "Maximum number of CPUs (2-256)"
	range 2 256
	depends on SMP
	default "64" if SW64_CHIP3
	help
	  SW6 support can handle a maximum of 256 CPUs.

config HOTPLUG_CPU
	bool "Support for hot-pluggable CPUs"
	depends on SMP
	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 ARCH_SPARSEMEM_ENABLE
	bool "Sparse Memory Support"
	depends on SMP
	select SPARSEMEM_VMEMMAP_ENABLE

config NUMA
	bool "NUMA Support"
	depends on SMP && !FLATMEM
	help
	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
	  Access).  This option is for configuring high-end multiprocessor
	  server machines.  If in doubt, say N.

config USE_PERCPU_NUMA_NODE_ID
	def_bool y
	depends on NUMA

config NODES_SHIFT
	int
	default "7"
	depends on NEED_MULTIPLE_NODES

config RELOCATABLE
	bool "Relocatable kernel"
	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 "0x80000"
	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 0x20000000
	default "0x10000000"
	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 KTEXT space, 512Mb. The default is 256MB.

config HZ
	int "HZ of the short timer"
	default 500

source "drivers/eisa/Kconfig"

source "drivers/pcmcia/Kconfig"

source "fs/Kconfig.binfmt"

source "arch/sw_64/lib/Kconfig"

endmenu

menu "Boot options"

config USE_OF
	bool "Flattened Device Tree support"
	select OF
	select IRQ_DOMAIN
	help
	  Include support for flattened device tree machine descriptions.

config SW64_BUILTIN_DTB
	bool "Embed DTB in kernel image"
	depends on OF
	default n
	help
	  Embeds a device tree binary in the kernel image.

config SW64_BUILTIN_DTB_NAME
	string "Built in DTB"
	depends on SW64_BUILTIN_DTB
	help
	  Set the name of the DTB to embed, leave blank to pick one
	  automatically based on kernel configuration.

config EFI
	bool "UEFI runtime support"
	select UCS2_STRING
	select EFI_RUNTIME_WRAPPERS
	default y
	help
	  This option provides support for runtime services provided
	  by UEFI firmware (such as non-volatile variables, realtime
	  clock, and platform reset). A UEFI stub is also provided to
	  allow the kernel to be booted as an EFI application. This
	  is only useful on systems that have UEFI firmware.

config DMI
	bool "Enable support for SMBIOS (DMI) tables"
	depends on EFI
	default y
	help
	  This enables SMBIOS/DMI feature for systems.

	  This option is only useful on systems that have UEFI firmware.
	  However, even with this option, the resultant kernel should
	  continue to boot on existing non-UEFI platforms.

	  NOTE: This does *NOT* enable or encourage the use of DMI quirks,
	  i.e., the practice of identifying the platform via DMI to
	  decide whether certain workarounds for buggy hardware and/or
	  firmware need to be enabled. This would require the DMI subsystem
	  to be enabled much earlier than we do on ARM, which is non-trivial.

config CMDLINE_BOOL
	bool "Built-in kernel command line"
	help
	  Allow for specifying boot arguments to the kernel at
	  build time.  On some systems (e.g. embedded ones), it is
	  necessary or convenient to provide some or all of the
	  kernel boot arguments with the kernel itself (that is,
	  to not rely on the boot loader to provide them.)

	  To compile command line arguments into the kernel,
	  set this option to 'Y', then fill in the
	  boot arguments in CONFIG_CMDLINE.

	  Systems with fully functional boot loaders (i.e. non-embedded)
	  should leave this option set to 'N'.

config CMDLINE
	string "Built-in kernel command string"
	depends on CMDLINE_BOOL
	default ""
	help
	  Enter arguments here that should be compiled into the kernel
	  image and used at boot time.  If the boot loader provides a
	  command line at boot time, it is appended to this string to
	  form the full kernel command line, when the system boots.

	  However, you can use the CONFIG_CMDLINE_OVERRIDE option to
	  change this behavior.

	  In most cases, the command line (whether built-in or provided
	  by the boot loader) should specify the device for the root
	  file system.

config CMDLINE_OVERRIDE
	bool "Built-in command line overrides boot loader arguments"
	depends on CMDLINE_BOOL
	help
	  Set this option to 'Y' to have the kernel ignore the boot loader
	  command line, and use ONLY the built-in command line.

	  This is used to work around broken boot loaders.  This should
	  be set to 'N' under normal conditions.

config FORCE_MAX_ZONEORDER
	int
	default "16" if (HUGETLB_PAGE)
	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.

	  We make sure that we can allocate upto a HugePage size for each configuration.
	  Hence we have :
		MAX_ORDER = (PMD_SHIFT - PAGE_SHIFT) + 1 => PAGE_SHIFT - 2

endmenu

source "drivers/firmware/Kconfig"

menu "Power management options"

source "kernel/power/Kconfig"

source "drivers/acpi/Kconfig"

config ARCH_SUSPEND_POSSIBLE
	depends on SW64
	def_bool y

config ARCH_HIBERNATION_POSSIBLE
	depends on SW64
	def_bool y

config SW64_SUSPEND_DEEPSLEEP_NONBOOT_CORE
	depends on SUSPEND
	bool "SW64 non bootcore suspend into deep sleep mode"
	default n

config SW64_SUSPEND_DEEPSLEEP_BOOTCORE
	depends on SUSPEND
	bool "SW64 bootcore suspend into deep sleep mode"
	default n

config SW64_SUPPORT_S3_SLEEPING_STATE
	depends on SUSPEND
	bool "SW64 support S3 sleeping state"
	default n
	help
	  Only SW831 support S3 sleep option and needs SROM, HMCode and BIOS support.

source "drivers/cpuidle/Kconfig"

source "drivers/idle/Kconfig"

endmenu

source "arch/sw_64/kvm/Kconfig"