u-boot/arch/riscv/Kconfig

menu "RISC-V architecture"
	depends on RISCV

config SYS_ARCH
	default "riscv"

choice
	prompt "Target select"
	optional

config TARGET_AX25_AE350
	bool "Support ax25-ae350"

config TARGET_MICROCHIP_ICICLE
	bool "Support Microchip PolarFire-SoC Icicle Board"

config TARGET_QEMU_VIRT
	bool "Support QEMU Virt Board"

config TARGET_SIFIVE_FU540
	bool "Support SiFive FU540 Board"

endchoice

config SYS_ICACHE_OFF
	bool "Do not enable icache"
	default n
	help
	  Do not enable instruction cache in U-Boot.

config SPL_SYS_ICACHE_OFF
	bool "Do not enable icache in SPL"
	depends on SPL
	default SYS_ICACHE_OFF
	help
	  Do not enable instruction cache in SPL.

config SYS_DCACHE_OFF
	bool "Do not enable dcache"
	default n
	help
	  Do not enable data cache in U-Boot.

config SPL_SYS_DCACHE_OFF
	bool "Do not enable dcache in SPL"
	depends on SPL
	default SYS_DCACHE_OFF
	help
	  Do not enable data cache in SPL.

# board-specific options below
source "board/AndesTech/ax25-ae350/Kconfig"
source "board/emulation/qemu-riscv/Kconfig"
source "board/microchip/mpfs_icicle/Kconfig"
source "board/sifive/fu540/Kconfig"

# platform-specific options below
source "arch/riscv/cpu/ax25/Kconfig"
source "arch/riscv/cpu/generic/Kconfig"

# architecture-specific options below

choice
	prompt "Base ISA"
	default ARCH_RV32I

config ARCH_RV32I
	bool "RV32I"
	select 32BIT
	help
	  Choose this option to target the RV32I base integer instruction set.

config ARCH_RV64I
	bool "RV64I"
	select 64BIT
	select PHYS_64BIT
	help
	  Choose this option to target the RV64I base integer instruction set.

endchoice

choice
	prompt "Code Model"
	default CMODEL_MEDLOW

config CMODEL_MEDLOW
	bool "medium low code model"
	help
	  U-Boot and its statically defined symbols must lie within a single 2 GiB
	  address range and must lie between absolute addresses -2 GiB and +2 GiB.

config CMODEL_MEDANY
	bool "medium any code model"
	help
	  U-Boot and its statically defined symbols must be within any single 2 GiB
	  address range.

endchoice

choice
	prompt "Run Mode"
	default RISCV_MMODE

config RISCV_MMODE
	bool "Machine"
	help
	  Choose this option to build U-Boot for RISC-V M-Mode.

config RISCV_SMODE
	bool "Supervisor"
	help
	  Choose this option to build U-Boot for RISC-V S-Mode.

endchoice

choice
	prompt "SPL Run Mode"
	default SPL_RISCV_MMODE
	depends on SPL

config SPL_RISCV_MMODE
	bool "Machine"
	help
	  Choose this option to build U-Boot SPL for RISC-V M-Mode.

config SPL_RISCV_SMODE
	bool "Supervisor"
	help
	  Choose this option to build U-Boot SPL for RISC-V S-Mode.

endchoice

config RISCV_ISA_C
	bool "Emit compressed instructions"
	default y
	help
	  Adds "C" to the ISA subsets that the toolchain is allowed to emit
	  when building U-Boot, which results in compressed instructions in the
	  U-Boot binary.

config RISCV_ISA_A
	def_bool y

config 32BIT
	bool

config 64BIT
	bool

config SIFIVE_CLINT
	bool
	depends on RISCV_MMODE || SPL_RISCV_MMODE
	select REGMAP
	select SYSCON
	select SPL_REGMAP if SPL
	select SPL_SYSCON if SPL
	help
	  The SiFive CLINT block holds memory-mapped control and status registers
	  associated with software and timer interrupts.

config ANDES_PLIC
	bool
	depends on RISCV_MMODE || SPL_RISCV_MMODE
	select REGMAP
	select SYSCON
	select SPL_REGMAP if SPL
	select SPL_SYSCON if SPL
	help
	  The Andes PLIC block holds memory-mapped claim and pending registers
	  associated with software interrupt.

config ANDES_PLMT
	bool
	depends on RISCV_MMODE || SPL_RISCV_MMODE
	select REGMAP
	select SYSCON
	select SPL_REGMAP if SPL
	select SPL_SYSCON if SPL
	help
	  The Andes PLMT block holds memory-mapped mtime register
	  associated with timer tick.

config RISCV_RDTIME
	bool
	default y if RISCV_SMODE || SPL_RISCV_SMODE
	help
	  The provides the riscv_get_time() API that is implemented using the
	  standard rdtime instruction. This is the case for S-mode U-Boot, and
	  is useful for processors that support rdtime in M-mode too.

config SYS_MALLOC_F_LEN
	default 0x1000

config SMP
	bool "Symmetric Multi-Processing"
	help
	  This enables support for systems with more than one CPU. If
	  you say N here, U-Boot will run on single and multiprocessor
	  machines, but will use only one CPU of a multiprocessor
	  machine. If you say Y here, U-Boot will run on many, but not
	  all, single processor machines.

config NR_CPUS
	int "Maximum number of CPUs (2-32)"
	range 2 32
	depends on SMP
	default 8
	help
	  On multiprocessor machines, U-Boot sets up a stack for each CPU.
	  Stack memory is pre-allocated. U-Boot must therefore know the
	  maximum number of CPUs that may be present.

config SBI
	bool
	default y if RISCV_SMODE || SPL_RISCV_SMODE

config SBI_V01
	bool "SBI v0.1 support"
	default y
	depends on SBI
	help
	  This config allows kernel to use SBI v0.1 APIs. This will be
	  deprecated in future once legacy M-mode software are no longer in use.

config SBI_IPI
	bool
	depends on SBI
	default y if RISCV_SMODE || SPL_RISCV_SMODE
	depends on SMP

config XIP
	bool "XIP mode"
	help
	  XIP (eXecute In Place) is a method for executing code directly
	  from a NOR flash memory without copying the code to ram.
	  Say yes here if U-Boot boots from flash directly.

config SHOW_REGS
	bool "Show registers on unhandled exception"

config STACK_SIZE_SHIFT
	int
	default 14

endmenu