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# 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; -*-