| # RISC-V CPU ISA extensions. |
| |
| config BR2_RISCV_ISA_RVI |
| bool |
| |
| config BR2_RISCV_ISA_RVM |
| bool |
| |
| config BR2_RISCV_ISA_RVA |
| bool |
| |
| config BR2_RISCV_ISA_RVF |
| bool |
| |
| config BR2_RISCV_ISA_RVD |
| bool |
| |
| config BR2_RISCV_ISA_RVC |
| bool |
| |
| 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 |
| select BR2_RISCV_ISA_CUSTOM_RVA |
| |
| endchoice |
| |
| if BR2_riscv_custom |
| |
| comment "Instruction Set Extensions" |
| |
| config BR2_RISCV_ISA_CUSTOM_RVM |
| bool "Integer Multiplication and Division (M)" |
| select BR2_RISCV_ISA_RVM |
| |
| config BR2_RISCV_ISA_CUSTOM_RVA |
| bool "Atomic Instructions (A)" |
| select BR2_RISCV_ISA_RVA |
| |
| config BR2_RISCV_ISA_CUSTOM_RVF |
| bool "Single-precision Floating-point (F)" |
| select BR2_RISCV_ISA_RVF |
| |
| config BR2_RISCV_ISA_CUSTOM_RVD |
| bool "Double-precision Floating-point (D)" |
| depends on BR2_RISCV_ISA_RVF |
| select BR2_RISCV_ISA_RVD |
| |
| config BR2_RISCV_ISA_CUSTOM_RVC |
| bool "Compressed Instructions (C)" |
| select BR2_RISCV_ISA_RVC |
| endif |
| |
| config BR2_RISCV_64 |
| bool |
| default y |
| select BR2_ARCH_IS_64 |
| |
| choice |
| prompt "Target ABI" |
| default BR2_RISCV_ABI_LP64 |
| |
| 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 |
| |
| config BR2_RISCV_ABI_LP64D |
| bool "lp64d" |
| depends on BR2_ARCH_IS_64 && BR2_RISCV_ISA_RVD |
| endchoice |
| |
| config BR2_ARCH |
| default "riscv64" if BR2_ARCH_IS_64 |
| |
| config BR2_ENDIAN |
| default "LITTLE" |
| |
| config BR2_GCC_TARGET_ABI |
| 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" |
