xref: /openbmc/linux/arch/openrisc/Kconfig (revision d4cb776f)

#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#

config OPENRISC
	def_bool y
	select OF
	select OF_EARLY_FLATTREE
	select IRQ_DOMAIN
	select HAVE_MEMBLOCK
	select ARCH_REQUIRE_GPIOLIB
        select HAVE_ARCH_TRACEHOOK
	select HAVE_GENERIC_HARDIRQS
	select VIRT_TO_BUS
	select GENERIC_IRQ_CHIP
	select GENERIC_IRQ_PROBE
	select GENERIC_IRQ_SHOW
	select GENERIC_IOMAP
	select GENERIC_CPU_DEVICES
	select GENERIC_ATOMIC64
	select GENERIC_CLOCKEVENTS
	select GENERIC_STRNCPY_FROM_USER
	select GENERIC_STRNLEN_USER
	select MODULES_USE_ELF_RELA

config MMU
	def_bool y

config HAVE_DMA_ATTRS
	def_bool y

config UID16
	def_bool y

config RWSEM_GENERIC_SPINLOCK
	def_bool y

config RWSEM_XCHGADD_ALGORITHM
	def_bool n

config GENERIC_HWEIGHT
	def_bool y

config NO_IOPORT
	def_bool y

config GENERIC_GPIO
	def_bool y

config TRACE_IRQFLAGS_SUPPORT
        def_bool y

# For now, use generic checksum functions
#These can be reimplemented in assembly later if so inclined
config GENERIC_CSUM
        def_bool y

config GENERIC_FIND_NEXT_BIT
	def_bool y

source "init/Kconfig"


menu "Processor type and features"

choice
	prompt "Subarchitecture"
	default OR1K_1200

config OR1K_1200
	bool "OR1200"
	help
	  Generic OpenRISC 1200 architecture

endchoice

config OPENRISC_BUILTIN_DTB
        string "Builtin DTB"
        default ""

menu "Class II Instructions"

config OPENRISC_HAVE_INST_FF1
	bool "Have instruction l.ff1"
	default y
	help
	  Select this if your implementation has the Class II instruction l.ff1

config OPENRISC_HAVE_INST_FL1
	bool "Have instruction l.fl1"
	default y
	help
	  Select this if your implementation has the Class II instruction l.fl1

config OPENRISC_HAVE_INST_MUL
	bool "Have instruction l.mul for hardware multiply"
	default y
	help
	  Select this if your implementation has a hardware multiply instruction

config OPENRISC_HAVE_INST_DIV
	bool "Have instruction l.div for hardware divide"
	default y
	help
	  Select this if your implementation has a hardware divide instruction
endmenu


source kernel/Kconfig.hz
source kernel/Kconfig.preempt
source "mm/Kconfig"

config OPENRISC_NO_SPR_SR_DSX
	bool "use SPR_SR_DSX software emulation" if OR1K_1200
	default y
	help
	  SPR_SR_DSX bit is status register bit indicating whether
	  the last exception has happened in delay slot.

	  OpenRISC architecture makes it optional to have it implemented
	  in hardware and the OR1200 does not have it.

	  Say N here if you know that your OpenRISC processor has
	  SPR_SR_DSX bit implemented. Say Y if you are unsure.

config CMDLINE
        string "Default kernel command string"
        default ""
        help
          On some architectures there is currently no way for the boot loader
          to pass arguments to the kernel. For these architectures, you should
          supply some command-line options at build time by entering them
          here.

menu "Debugging options"

config DEBUG_STACKOVERFLOW
	bool "Check for kernel stack overflow"
	default y
	help
	  Make extra checks for space available on stack in some
          critical functions. This will cause kernel to run a bit slower,
	  but will catch most of kernel stack overruns and exit gracefully.

	  Say Y if you are unsure.

config JUMP_UPON_UNHANDLED_EXCEPTION
	bool "Try to die gracefully"
	default y
	help
	  Now this puts kernel into infinite loop after first oops. Till
	  your kernel crashes this doesn't have any influence.

	  Say Y if you are unsure.

config OPENRISC_ESR_EXCEPTION_BUG_CHECK
	bool "Check for possible ESR exception bug"
	default n
	help
	  This option enables some checks that might expose some problems
          in kernel.

	  Say N if you are unsure.

endmenu

endmenu

menu "Executable file formats"

source "fs/Kconfig.binfmt"

endmenu

source "net/Kconfig"

source "drivers/Kconfig"

source "fs/Kconfig"

source "security/Kconfig"

source "crypto/Kconfig"

source "lib/Kconfig"

menu "Kernel hacking"

source "lib/Kconfig.debug"

endmenu