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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"
- select BR2_USE_MMU
- config BR2_RISCV_64
- bool "64-bit"
- select BR2_ARCH_IS_64
- endchoice
- config BR2_RISCV_USE_MMU
- bool "MMU support"
- default y
- depends on BR2_RISCV_64
- 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; -*-
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