| # 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; -*- |
