# RISC-V CPU ISA extensions.

choice
	prompt "Target Architecture Variant"
	default BR2_riscv_g

config BR2_riscv_g
	bool "General purpose (G)"
	select BR2_RISCV_ISA_RVI
	select BR2_RISCV_ISA_RVM
	select BR2_RISCV_ISA_RVA
	select BR2_RISCV_ISA_RVF
	select BR2_RISCV_ISA_RVD
	help
	  General purpose (G) is equivalent to IMAFD.

config BR2_riscv_custom
	bool "Custom architecture"
	select BR2_RISCV_ISA_RVI

endchoice

comment "Instruction Set Extensions"

config BR2_RISCV_ISA_RVI
	bool "Base Integer (I)"

config BR2_RISCV_ISA_RVM
	bool "Integer Multiplication and Division (M)"

config BR2_RISCV_ISA_RVA
	bool "Atomic Instructions (A)"

config BR2_RISCV_ISA_RVF
	bool "Single-precision Floating-point (F)"

config BR2_RISCV_ISA_RVD
	bool "Double-precision Floating-point (D)"
	depends on BR2_RISCV_ISA_RVF

config BR2_RISCV_ISA_RVC
	bool "Compressed Instructions (C)"

config BR2_RISCV_ISA_RVV
	bool "Vector Instructions (V)"
	select BR2_ARCH_NEEDS_GCC_AT_LEAST_12

choice
	prompt "Target Architecture Size"
	default BR2_RISCV_64

config BR2_RISCV_32
	bool "32-bit"

config BR2_RISCV_64
	bool "64-bit"
	select BR2_ARCH_IS_64

endchoice

config BR2_RISCV_USE_MMU
	bool "MMU support"
	default y
	select BR2_USE_MMU
	help
	  Enable this option if your RISC-V core has a MMU (Memory
	  Management Unit).

choice
	prompt "Target ABI"
	default BR2_RISCV_ABI_ILP32D if !BR2_ARCH_IS_64 && BR2_RISCV_ISA_RVD
	default BR2_RISCV_ABI_ILP32F if !BR2_ARCH_IS_64 && BR2_RISCV_ISA_RVF
	default BR2_RISCV_ABI_ILP32  if !BR2_ARCH_IS_64
	default BR2_RISCV_ABI_LP64D  if BR2_ARCH_IS_64 && BR2_RISCV_ISA_RVD
	default BR2_RISCV_ABI_LP64F  if BR2_ARCH_IS_64 && BR2_RISCV_ISA_RVF
	default BR2_RISCV_ABI_LP64   if BR2_ARCH_IS_64

config BR2_RISCV_ABI_ILP32
	bool "ilp32"
	depends on !BR2_ARCH_IS_64

config BR2_RISCV_ABI_ILP32F
	bool "ilp32f"
	depends on !BR2_ARCH_IS_64 && BR2_RISCV_ISA_RVF

config BR2_RISCV_ABI_ILP32D
	bool "ilp32d"
	depends on !BR2_ARCH_IS_64 && BR2_RISCV_ISA_RVD

config BR2_RISCV_ABI_LP64
	bool "lp64"
	depends on BR2_ARCH_IS_64

config BR2_RISCV_ABI_LP64F
	bool "lp64f"
	depends on BR2_ARCH_IS_64 && BR2_RISCV_ISA_RVF
	depends on BR2_USE_MMU

config BR2_RISCV_ABI_LP64D
	bool "lp64d"
	depends on BR2_ARCH_IS_64 && BR2_RISCV_ISA_RVD
endchoice

config BR2_ARCH
	default "riscv32" if !BR2_ARCH_IS_64
	default "riscv64" if BR2_ARCH_IS_64

config BR2_NORMALIZED_ARCH
	default "riscv"

config BR2_ENDIAN
	default "LITTLE"

config BR2_GCC_TARGET_ABI
	default "ilp32" if BR2_RISCV_ABI_ILP32
	default "ilp32f" if BR2_RISCV_ABI_ILP32F
	default "ilp32d" if BR2_RISCV_ABI_ILP32D
	default "lp64" if BR2_RISCV_ABI_LP64
	default "lp64f" if BR2_RISCV_ABI_LP64F
	default "lp64d" if BR2_RISCV_ABI_LP64D

config BR2_READELF_ARCH_NAME
	default "RISC-V"

# vim: ft=kconfig
# -*- mode:kconfig; -*-