Add support to build code big-endian if the board supports it. Updates the makefile to pass the correct compiler and elf flags.
Signed-off-by: Ben Dooks <ben.do...@codethink.co.uk> --- arch/riscv/config.mk | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) diff --git a/arch/riscv/config.mk b/arch/riscv/config.mk index 9f16dda92a0..2eeeb433748 100644 --- a/arch/riscv/config.mk +++ b/arch/riscv/config.mk @@ -10,19 +10,29 @@ # Rick Chen, Andes Technology Corporation <r...@andestech.com> # -32bit-emul := elf32lriscv -64bit-emul := elf64lriscv +ifdef CONFIG_SYS_BIT_ENDIAN +small-endian := b +large-endian := big +else +small-endian := b +large-endian := big +PLATFORM_CPPFLAGS += -mbig-endian +KBUILD_LDFLAGS += -mbig-endian +endif + +32bit-emul := elf32$(small-endian)riscv +64bit-emul := elf64$(small-endian)riscv ifdef CONFIG_32BIT KBUILD_LDFLAGS += -m $(32bit-emul) EFI_LDS := elf_riscv32_efi.lds -PLATFORM_ELFFLAGS += -B riscv -O elf32-littleriscv +PLATFORM_ELFFLAGS += -B riscv -O elf32-$(large-endian)riscv endif ifdef CONFIG_64BIT KBUILD_LDFLAGS += -m $(64bit-emul) EFI_LDS := elf_riscv64_efi.lds -PLATFORM_ELFFLAGS += -B riscv -O elf64-littleriscv +PLATFORM_ELFFLAGS += -B riscv -O elf64-$(large-endian)riscv endif PLATFORM_CPPFLAGS += -ffixed-x3 -fpic -- 2.37.2.352.g3c44437643
