From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bin Meng Date: Mon, 10 Sep 2018 21:37:32 -0700 Subject: [U-Boot] [PATCH v2 07/15] riscv: Explicitly pass -march and -mabi to the compiler In-Reply-To: <1536640660-3376-1-git-send-email-bmeng.cn@gmail.com> References: <1536640660-3376-1-git-send-email-bmeng.cn@gmail.com> Message-ID: <1536640660-3376-8-git-send-email-bmeng.cn@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de 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 --- Changes in v2: None arch/riscv/config.mk | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/riscv/config.mk b/arch/riscv/config.mk index 219e666..1484887 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 +35,9 @@ CONFIG_STANDALONE_LOAD_ADDR = 0x00000000 \ -T $(srctree)/examples/standalone/riscv.lds PLATFORM_CPPFLAGS += -ffixed-gp -fpic -PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -gdwarf-2 -ffunction-sections -LDFLAGS_u-boot += --gc-sections -static -pie +PLATFORM_RELFLAGS += -fno-strict-aliasing -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 -- 2.7.4