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"

config TARGET_SIPEED_MAIX
	bool "Support Sipeed Maix 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"
source "board/sipeed/maix/Kconfig"

# platform-specific options below
source "arch/riscv/cpu/ax25/Kconfig"
source "arch/riscv/cpu/fu540/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"
	depends on SBI_V01 || !RISCV_SMODE
	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 SPL_SMP
	bool "Symmetric Multi-Processing in SPL"
	depends on SPL && SPL_RISCV_MMODE
	default y
	help
	  This enables support for systems with more than one CPU in SPL.
	  If you say N here, U-Boot SPL will run on single and multiprocessor
	  machines, but will use only one CPU of a multiprocessor
	  machine. If you say Y here, U-Boot SPL 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 || SPL_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

choice
	prompt "SBI support"
	default SBI_V02

config SBI_V01
	bool "SBI v0.1 support"
	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_V02
	bool "SBI v0.2 support"
	depends on SBI
	help
	  This config allows kernel to use SBI v0.2 APIs. SBI v0.2 is more
	  scalable and extendable to handle future needs for RISC-V supervisor
	  interfaces. For example, with SBI v0.2 HSM extension, only a single
	  hart need to boot and enter operating system. The booting hart can
	  bring up secondary harts one by one afterwards.

	  Choose this option if OpenSBI v0.7 or above release is used together
	  with U-Boot.

endchoice

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 RISCV_PRIV_1_9
	bool "Use version 1.9 of the RISC-V priviledged specification"
	help
	  Older versions of the RISC-V priviledged specification had
	  separate counter enable CSRs for each privilege mode. Writing
	  to the unified mcounteren CSR on a processor implementing the
	  old specification will result in an illegal instruction
	  exception. In addition to counter CSR changes, the way virtual
	  memory is configured was also changed.

config STACK_SIZE_SHIFT
	int
	default 14

endmenu