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- #
- # (C) Copyright 2003
- # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- #
- # SPDX-License-Identifier: GPL-2.0+
- #
- ifdef CONFIG_SYS_BIG_ENDIAN
- 32bit-emul := elf32btsmip
- 64bit-emul := elf64btsmip
- 32bit-bfd := elf32-tradbigmips
- 64bit-bfd := elf64-tradbigmips
- PLATFORM_CPPFLAGS += -EB
- PLATFORM_LDFLAGS += -EB
- endif
- ifdef CONFIG_SYS_LITTLE_ENDIAN
- 32bit-emul := elf32ltsmip
- 64bit-emul := elf64ltsmip
- 32bit-bfd := elf32-tradlittlemips
- 64bit-bfd := elf64-tradlittlemips
- PLATFORM_CPPFLAGS += -EL
- PLATFORM_LDFLAGS += -EL
- endif
- ifdef CONFIG_32BIT
- PLATFORM_CPPFLAGS += -mabi=32
- PLATFORM_LDFLAGS += -m $(32bit-emul)
- OBJCOPYFLAGS += -O $(32bit-bfd)
- endif
- ifdef CONFIG_64BIT
- PLATFORM_CPPFLAGS += -mabi=64
- PLATFORM_LDFLAGS += -m$(64bit-emul)
- OBJCOPYFLAGS += -O $(64bit-bfd)
- endif
- cpuflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,-mips32
- cpuflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,-mips32r2
- cpuflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,-mips64
- cpuflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,-mips64r2
- PLATFORM_CPPFLAGS += $(cpuflags-y)
- PLATFORM_CPPFLAGS += -D__MIPS__
- #
- # From Linux arch/mips/Makefile
- #
- # GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
- # code since it only slows down the whole thing. At some point we might make
- # use of global pointer optimizations but their use of $28 conflicts with
- # the current pointer optimization.
- #
- # The DECStation requires an ECOFF kernel for remote booting, other MIPS
- # machines may also. Since BFD is incredibly buggy with respect to
- # crossformat linking we rely on the elf2ecoff tool for format conversion.
- #
- # cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
- # cflags-y += -msoft-float
- # LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
- # MODFLAGS += -mlong-calls
- #
- # On the other hand, we want PIC in the U-Boot code to relocate it from ROM
- # to RAM. $28 is always used as gp.
- #
- PLATFORM_CPPFLAGS += -G 0 -mabicalls -fpic
- PLATFORM_CPPFLAGS += -msoft-float
- PLATFORM_LDFLAGS += -G 0 -static -n -nostdlib
- PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections
- LDFLAGS_FINAL += --gc-sections -pie
- OBJCOPYFLAGS += -j .text -j .rodata -j .data -j .got
- OBJCOPYFLAGS += -j .u_boot_list -j .rel.dyn -j .padding
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