aee39cbf27
This patch sets the default floating point ABI based on the ISA extensions that have been selected rather than defaulting to soft float. For 64-bit: ISA 'D' selects lp64d ISA 'F' selects lp64f Otherwise select lp64 For 32-bit: ISA 'D' selects ilp32d ISA 'F' selects ilp32f Otherwise select ilp32 This change was proposed by Palmer Dabbelt at SiFive. Signed-off-by: Mark Corbin <mark.corbin@embecosm.com> Reviewed-by: Palmer Dabbelt <palmer@sifive.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
135 lines
2.7 KiB
Plaintext
135 lines
2.7 KiB
Plaintext
# 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
|
|
|
|
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
|
|
|
|
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
|
|
|
|
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_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; -*-
|