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 $(64bit-bfd) 36endif 37 38cpuflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,-mips32 39cpuflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,-mips32r2 40cpuflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,-mips64 41cpuflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,-mips64r2 42PLATFORM_CPPFLAGS += $(cpuflags-y) 43 44PLATFORM_CPPFLAGS += -D__MIPS__ 45 46__HAVE_ARCH_GENERIC_BOARD := y 47 48# 49# From Linux arch/mips/Makefile 50# 51# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel 52# code since it only slows down the whole thing. At some point we might make 53# use of global pointer optimizations but their use of $28 conflicts with 54# the current pointer optimization. 55# 56# The DECStation requires an ECOFF kernel for remote booting, other MIPS 57# machines may also. Since BFD is incredibly buggy with respect to 58# crossformat linking we rely on the elf2ecoff tool for format conversion. 59# 60# cflags-y += -G 0 -mno-abicalls -fno-pic -pipe 61# cflags-y += -msoft-float 62# LDFLAGS_vmlinux += -G 0 -static -n -nostdlib 63# MODFLAGS += -mlong-calls 64# 65# On the other hand, we want PIC in the U-Boot code to relocate it from ROM 66# to RAM. $28 is always used as gp. 67# 68PLATFORM_CPPFLAGS += -G 0 -mabicalls -fpic 69PLATFORM_CPPFLAGS += -msoft-float 70PLATFORM_LDFLAGS += -G 0 -static -n -nostdlib 71PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections 72LDFLAGS_FINAL += --gc-sections -pie 73OBJCOPYFLAGS += -j .text -j .rodata -j .data -j .got 74OBJCOPYFLAGS += -j .u_boot_list -j .rel.dyn -j .padding 75