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 8*837cad1eSDaniel Schwierzeckifdef CONFIG_SYS_BIG_ENDIAN 9*837cad1eSDaniel Schwierzeck32bit-emul := elf32btsmip 10*837cad1eSDaniel Schwierzeck64bit-emul := elf64btsmip 11*837cad1eSDaniel Schwierzeck32bit-bfd := elf32-tradbigmips 12*837cad1eSDaniel Schwierzeck64bit-bfd := elf64-tradbigmips 13*837cad1eSDaniel SchwierzeckPLATFORM_CPPFLAGS += -EB 14*837cad1eSDaniel SchwierzeckPLATFORM_LDFLAGS += -EB 152c0e3de3SDaniel Schwierzeckendif 162c0e3de3SDaniel Schwierzeck 172c0e3de3SDaniel Schwierzeckifdef CONFIG_SYS_LITTLE_ENDIAN 18*837cad1eSDaniel Schwierzeck32bit-emul := elf32ltsmip 19*837cad1eSDaniel Schwierzeck64bit-emul := elf64ltsmip 20*837cad1eSDaniel Schwierzeck32bit-bfd := elf32-tradlittlemips 21*837cad1eSDaniel Schwierzeck64bit-bfd := elf64-tradlittlemips 22*837cad1eSDaniel SchwierzeckPLATFORM_CPPFLAGS += -EL 23*837cad1eSDaniel SchwierzeckPLATFORM_LDFLAGS += -EL 242c0e3de3SDaniel Schwierzeckendif 252c0e3de3SDaniel Schwierzeck 26*837cad1eSDaniel Schwierzeckifdef CONFIG_32BIT 27*837cad1eSDaniel SchwierzeckPLATFORM_CPPFLAGS += -mabi=32 28*837cad1eSDaniel SchwierzeckPLATFORM_LDFLAGS += -m $(32bit-emul) 29*837cad1eSDaniel SchwierzeckOBJCOPYFLAGS += -O $(32bit-bfd) 302c0e3de3SDaniel Schwierzeckendif 312c0e3de3SDaniel Schwierzeck 32*837cad1eSDaniel Schwierzeckifdef CONFIG_64BIT 33*837cad1eSDaniel SchwierzeckPLATFORM_CPPFLAGS += -mabi=64 34*837cad1eSDaniel SchwierzeckPLATFORM_LDFLAGS += -m$(64bit-emul) 35*837cad1eSDaniel SchwierzeckOBJCOPYFLAGS += -O $(64bit-bfd) 36*837cad1eSDaniel Schwierzeckendif 37*837cad1eSDaniel Schwierzeck 38*837cad1eSDaniel Schwierzeckcpuflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,-mips32 39*837cad1eSDaniel Schwierzeckcpuflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,-mips32r2 40*837cad1eSDaniel Schwierzeckcpuflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,-mips64 41*837cad1eSDaniel Schwierzeckcpuflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,-mips64r2 42*837cad1eSDaniel SchwierzeckPLATFORM_CPPFLAGS += $(cpuflags-y) 432c0e3de3SDaniel Schwierzeck 4490f984e3SMasahiro YamadaPLATFORM_CPPFLAGS += -D__MIPS__ 45ea0364f1SPeter Tyser 469f0868ffSPaul Burton__HAVE_ARCH_GENERIC_BOARD := y 479f0868ffSPaul Burton 48ea0364f1SPeter Tyser# 49ea0364f1SPeter Tyser# From Linux arch/mips/Makefile 50ea0364f1SPeter Tyser# 51ea0364f1SPeter Tyser# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel 52ea0364f1SPeter Tyser# code since it only slows down the whole thing. At some point we might make 53ea0364f1SPeter Tyser# use of global pointer optimizations but their use of $28 conflicts with 54ea0364f1SPeter Tyser# the current pointer optimization. 55ea0364f1SPeter Tyser# 56ea0364f1SPeter Tyser# The DECStation requires an ECOFF kernel for remote booting, other MIPS 57ea0364f1SPeter Tyser# machines may also. Since BFD is incredibly buggy with respect to 58ea0364f1SPeter Tyser# crossformat linking we rely on the elf2ecoff tool for format conversion. 59ea0364f1SPeter Tyser# 60ea0364f1SPeter Tyser# cflags-y += -G 0 -mno-abicalls -fno-pic -pipe 61ea0364f1SPeter Tyser# cflags-y += -msoft-float 62ea0364f1SPeter Tyser# LDFLAGS_vmlinux += -G 0 -static -n -nostdlib 63ea0364f1SPeter Tyser# MODFLAGS += -mlong-calls 64ea0364f1SPeter Tyser# 65ea0364f1SPeter Tyser# On the other hand, we want PIC in the U-Boot code to relocate it from ROM 66ea0364f1SPeter Tyser# to RAM. $28 is always used as gp. 67ea0364f1SPeter Tyser# 68*837cad1eSDaniel SchwierzeckPLATFORM_CPPFLAGS += -G 0 -mabicalls -fpic 69ea0364f1SPeter TyserPLATFORM_CPPFLAGS += -msoft-float 70*837cad1eSDaniel SchwierzeckPLATFORM_LDFLAGS += -G 0 -static -n -nostdlib 71660da094SDaniel SchwierzeckPLATFORM_RELFLAGS += -ffunction-sections -fdata-sections 7204380c65SGabor JuhosLDFLAGS_FINAL += --gc-sections -pie 7379fd7e64SDaniel SchwierzeckOBJCOPYFLAGS += -j .text -j .rodata -j .data -j .got 7479fd7e64SDaniel SchwierzeckOBJCOPYFLAGS += -j .u_boot_list -j .rel.dyn 75