| # |
| # (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 |
| |
| 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. |
| # |
| ifdef CONFIG_SPL_BUILD |
| PF_ABICALLS := -mno-abicalls |
| PF_PIC := -fno-pic |
| PF_PIE := |
| else |
| PF_ABICALLS := -mabicalls |
| PF_PIC := -fpic |
| PF_PIE := -pie |
| PF_OBJCOPY := -j .got -j .rel.dyn -j .padding |
| PF_OBJCOPY += -j .dtb.init.rodata |
| endif |
| |
| PLATFORM_CPPFLAGS += -G 0 $(PF_ABICALLS) $(PF_PIC) |
| PLATFORM_CPPFLAGS += -msoft-float |
| PLATFORM_LDFLAGS += -G 0 -static -n -nostdlib |
| PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections |
| LDFLAGS_FINAL += --gc-sections $(PF_PIE) |
| OBJCOPYFLAGS += -j .text -j .rodata -j .data -j .u_boot_list |
| OBJCOPYFLAGS += $(PF_OBJCOPY) |
