1# 2# (C) Copyright 2003 3# Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4# 5# SPDX-License-Identifier: GPL-2.0+ 6# 7 8ifdef CONFIG_SYS_BIG_ENDIAN 932bit-emul := elf32btsmip 1064bit-emul := elf64btsmip 1132bit-bfd := elf32-tradbigmips 1264bit-bfd := elf64-tradbigmips 13PLATFORM_CPPFLAGS += -EB 14PLATFORM_LDFLAGS += -EB 15endif 16 17ifdef CONFIG_SYS_LITTLE_ENDIAN 1832bit-emul := elf32ltsmip 1964bit-emul := elf64ltsmip 2032bit-bfd := elf32-tradlittlemips 2164bit-bfd := elf64-tradlittlemips 22PLATFORM_CPPFLAGS += -EL 23PLATFORM_LDFLAGS += -EL 24endif 25 26ifdef CONFIG_32BIT 27PLATFORM_CPPFLAGS += -mabi=32 28PLATFORM_LDFLAGS += -m $(32bit-emul) 29OBJCOPYFLAGS += -O $(32bit-bfd) 30endif 31 32ifdef CONFIG_64BIT 33PLATFORM_CPPFLAGS += -mabi=64 34PLATFORM_LDFLAGS += -m$(64bit-emul) 35OBJCOPYFLAGS += -O $(64bit-bfd) 36endif 37 38PLATFORM_CPPFLAGS += -D__MIPS__ 39 40# 41# From Linux arch/mips/Makefile 42# 43# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel 44# code since it only slows down the whole thing. At some point we might make 45# use of global pointer optimizations but their use of $28 conflicts with 46# the current pointer optimization. 47# 48# The DECStation requires an ECOFF kernel for remote booting, other MIPS 49# machines may also. Since BFD is incredibly buggy with respect to 50# crossformat linking we rely on the elf2ecoff tool for format conversion. 51# 52# cflags-y += -G 0 -mno-abicalls -fno-pic -pipe 53# cflags-y += -msoft-float 54# LDFLAGS_vmlinux += -G 0 -static -n -nostdlib 55# MODFLAGS += -mlong-calls 56# 57# On the other hand, we want PIC in the U-Boot code to relocate it from ROM 58# to RAM. $28 is always used as gp. 59# 60ifdef CONFIG_SPL_BUILD 61PF_ABICALLS := -mno-abicalls 62PF_PIC := -fno-pic 63PF_PIE := 64else 65PF_ABICALLS := -mabicalls 66PF_PIC := -fpic 67PF_PIE := -pie 68PF_OBJCOPY := -j .got -j .rel.dyn -j .padding 69PF_OBJCOPY += -j .dtb.init.rodata 70endif 71 72PLATFORM_CPPFLAGS += -G 0 $(PF_ABICALLS) $(PF_PIC) 73PLATFORM_CPPFLAGS += -msoft-float 74PLATFORM_LDFLAGS += -G 0 -static -n -nostdlib 75PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections 76LDFLAGS_FINAL += --gc-sections $(PF_PIE) 77OBJCOPYFLAGS += -j .text -j .rodata -j .data -j .u_boot_list 78OBJCOPYFLAGS += $(PF_OBJCOPY) 79