diff options
| author | Heinrich Schuchardt <heinrich.schuchardt@canonical.com> | 2022-10-12 15:59:51 +0300 |
|---|---|---|
| committer | Leo Yu-Chi Liang <ycliang@andestech.com> | 2022-10-20 10:22:21 +0300 |
| commit | e67f34f778baabd76f2e0e645a409fed14d2d156 (patch) | |
| tree | d7600fc3897f81edad9281cb5b082d65a5d0e69e /arch/riscv/Kconfig | |
| parent | f22db44c1bb6ae86b0ffb416bdd690bcf97d7250 (diff) | |
| download | u-boot-e67f34f778baabd76f2e0e645a409fed14d2d156.tar.xz | |
riscv: support building double-float modules
The riscv32 toolchain for GCC-12 provided by kernel.org contains libgcc.a
compiled for double-float. To link to it we have to adjust how we build
U-Boot.
As U-Boot actually does not use floating point at all this should not
make a significant difference for the produced binaries.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Rick Chen <rick@andestech.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
Diffstat (limited to 'arch/riscv/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 32a90b83b5..8f9578171d 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -152,6 +152,21 @@ config RISCV_ISA_C when building U-Boot, which results in compressed instructions in the U-Boot binary. +config RISCV_ISA_F + bool "Standard extension for Single-Precision Floating Point" + default y + help + Adds "F" to the ISA string passed to the compiler. + +config RISCV_ISA_D + bool "Standard extension for Double-Precision Floating Point" + depends on RISCV_ISA_F + default y + help + Adds "D" to the ISA string passed to the compiler and changes the + riscv32 ABI from ilp32 to ilp32d and the riscv64 ABI from lp64 to + lp64d. + config RISCV_ISA_A def_bool y |