At present the compiler flag against which architecture and abi variant the riscv image is built for is not explicitly indicated which means the default compiler configuration is used. But this does not work if we want to build a different target (eg: 32-bit riscv images using a toolchain configured for 64-bit riscv).
Fix this by explicitly passing -march and -mabi to the compiler. Since generically we don't use floating point in U-Boot, specify the RV[32|64]IMA ISA and software floating ABI.
This also fix some alignment coding style issues.
Signed-off-by: Bin Meng bmeng.cn@gmail.com Reviewed-by: Lukas Auer lukas.auer@aisec.fraunhofer.de ---
Changes in v3: None Changes in v2: None
arch/riscv/config.mk | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/riscv/config.mk b/arch/riscv/config.mk index c0b3858..b235ae1 100644 --- a/arch/riscv/config.mk +++ b/arch/riscv/config.mk @@ -18,12 +18,16 @@ endif 64bit-emul := elf64lriscv
ifdef CONFIG_32BIT +PLATFORM_CPPFLAGS += -march=rv32ima -mabi=ilp32 PLATFORM_LDFLAGS += -m $(32bit-emul) +CFLAGS_EFI += -march=rv32ima -mabi=ilp32 EFI_LDS := elf_riscv32_efi.lds endif
ifdef CONFIG_64BIT +PLATFORM_CPPFLAGS += -march=rv64ima -mabi=lp64 PLATFORM_LDFLAGS += -m $(64bit-emul) +CFLAGS_EFI += -march=rv64ima -mabi=lp64 EFI_LDS := elf_riscv64_efi.lds endif
@@ -31,8 +35,8 @@ CONFIG_STANDALONE_LOAD_ADDR = 0x00000000 \ -T $(srctree)/examples/standalone/riscv.lds
PLATFORM_CPPFLAGS += -ffixed-gp -fpic -PLATFORM_RELFLAGS += -fno-common -gdwarf-2 -ffunction-sections -LDFLAGS_u-boot += --gc-sections -static -pie +PLATFORM_RELFLAGS += -fno-common -gdwarf-2 -ffunction-sections +LDFLAGS_u-boot += --gc-sections -static -pie
EFI_CRT0 := crt0_riscv_efi.o EFI_RELOC := reloc_riscv_efi.o