1ea0364f1SPeter Tyser# 2ea0364f1SPeter Tyser# (C) Copyright 2003 3ea0364f1SPeter Tyser# Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4ea0364f1SPeter Tyser# 51a459660SWolfgang Denk# SPDX-License-Identifier: GPL-2.0+ 6ea0364f1SPeter Tyser# 7ea0364f1SPeter Tyser 8837cad1eSDaniel Schwierzeckifdef CONFIG_SYS_BIG_ENDIAN 9837cad1eSDaniel Schwierzeck32bit-emul := elf32btsmip 10837cad1eSDaniel Schwierzeck64bit-emul := elf64btsmip 11837cad1eSDaniel Schwierzeck32bit-bfd := elf32-tradbigmips 12837cad1eSDaniel Schwierzeck64bit-bfd := elf64-tradbigmips 13837cad1eSDaniel SchwierzeckPLATFORM_CPPFLAGS += -EB 14837cad1eSDaniel SchwierzeckPLATFORM_LDFLAGS += -EB 152c0e3de3SDaniel Schwierzeckendif 162c0e3de3SDaniel Schwierzeck 172c0e3de3SDaniel Schwierzeckifdef CONFIG_SYS_LITTLE_ENDIAN 18837cad1eSDaniel Schwierzeck32bit-emul := elf32ltsmip 19837cad1eSDaniel Schwierzeck64bit-emul := elf64ltsmip 20837cad1eSDaniel Schwierzeck32bit-bfd := elf32-tradlittlemips 21837cad1eSDaniel Schwierzeck64bit-bfd := elf64-tradlittlemips 22837cad1eSDaniel SchwierzeckPLATFORM_CPPFLAGS += -EL 23837cad1eSDaniel SchwierzeckPLATFORM_LDFLAGS += -EL 242c0e3de3SDaniel Schwierzeckendif 252c0e3de3SDaniel Schwierzeck 26837cad1eSDaniel Schwierzeckifdef CONFIG_32BIT 27837cad1eSDaniel SchwierzeckPLATFORM_CPPFLAGS += -mabi=32 28837cad1eSDaniel SchwierzeckPLATFORM_LDFLAGS += -m $(32bit-emul) 29837cad1eSDaniel SchwierzeckOBJCOPYFLAGS += -O $(32bit-bfd) 302c0e3de3SDaniel Schwierzeckendif 312c0e3de3SDaniel Schwierzeck 32837cad1eSDaniel Schwierzeckifdef CONFIG_64BIT 33837cad1eSDaniel SchwierzeckPLATFORM_CPPFLAGS += -mabi=64 34837cad1eSDaniel SchwierzeckPLATFORM_LDFLAGS += -m$(64bit-emul) 35837cad1eSDaniel SchwierzeckOBJCOPYFLAGS += -O $(64bit-bfd) 36837cad1eSDaniel Schwierzeckendif 37837cad1eSDaniel Schwierzeck 38837cad1eSDaniel Schwierzeckcpuflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,-mips32 39837cad1eSDaniel Schwierzeckcpuflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,-mips32r2 40837cad1eSDaniel Schwierzeckcpuflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,-mips64 41837cad1eSDaniel Schwierzeckcpuflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,-mips64r2 42837cad1eSDaniel SchwierzeckPLATFORM_CPPFLAGS += $(cpuflags-y) 432c0e3de3SDaniel Schwierzeck 4490f984e3SMasahiro YamadaPLATFORM_CPPFLAGS += -D__MIPS__ 45ea0364f1SPeter Tyser 46ea0364f1SPeter Tyser# 47ea0364f1SPeter Tyser# From Linux arch/mips/Makefile 48ea0364f1SPeter Tyser# 49ea0364f1SPeter Tyser# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel 50ea0364f1SPeter Tyser# code since it only slows down the whole thing. At some point we might make 51ea0364f1SPeter Tyser# use of global pointer optimizations but their use of $28 conflicts with 52ea0364f1SPeter Tyser# the current pointer optimization. 53ea0364f1SPeter Tyser# 54ea0364f1SPeter Tyser# The DECStation requires an ECOFF kernel for remote booting, other MIPS 55ea0364f1SPeter Tyser# machines may also. Since BFD is incredibly buggy with respect to 56ea0364f1SPeter Tyser# crossformat linking we rely on the elf2ecoff tool for format conversion. 57ea0364f1SPeter Tyser# 58ea0364f1SPeter Tyser# cflags-y += -G 0 -mno-abicalls -fno-pic -pipe 59ea0364f1SPeter Tyser# cflags-y += -msoft-float 60ea0364f1SPeter Tyser# LDFLAGS_vmlinux += -G 0 -static -n -nostdlib 61ea0364f1SPeter Tyser# MODFLAGS += -mlong-calls 62ea0364f1SPeter Tyser# 63ea0364f1SPeter Tyser# On the other hand, we want PIC in the U-Boot code to relocate it from ROM 64ea0364f1SPeter Tyser# to RAM. $28 is always used as gp. 65ea0364f1SPeter Tyser# 66*e92d9124SDaniel Schwierzeckifdef CONFIG_SPL_BUILD 67*e92d9124SDaniel SchwierzeckPF_ABICALLS := -mno-abicalls 68*e92d9124SDaniel SchwierzeckPF_PIC := -fno-pic 69*e92d9124SDaniel SchwierzeckPF_PIE := 70*e92d9124SDaniel Schwierzeckelse 71*e92d9124SDaniel SchwierzeckPF_ABICALLS := -mabicalls 72*e92d9124SDaniel SchwierzeckPF_PIC := -fpic 73*e92d9124SDaniel SchwierzeckPF_PIE := -pie 74*e92d9124SDaniel SchwierzeckPF_OBJCOPY := -j .got -j .u_boot_list -j .rel.dyn -j .padding 75*e92d9124SDaniel Schwierzeckendif 76*e92d9124SDaniel Schwierzeck 77*e92d9124SDaniel SchwierzeckPLATFORM_CPPFLAGS += -G 0 $(PF_ABICALLS) $(PF_PIC) 78ea0364f1SPeter TyserPLATFORM_CPPFLAGS += -msoft-float 79837cad1eSDaniel SchwierzeckPLATFORM_LDFLAGS += -G 0 -static -n -nostdlib 80660da094SDaniel SchwierzeckPLATFORM_RELFLAGS += -ffunction-sections -fdata-sections 81*e92d9124SDaniel SchwierzeckLDFLAGS_FINAL += --gc-sections $(PF_PIE) 82*e92d9124SDaniel SchwierzeckOBJCOPYFLAGS += -j .text -j .rodata -j .data $(PF_OBJCOPY) 83