1# 2# (C) Copyright 2003 3# Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4# 5# SPDX-License-Identifier: GPL-2.0+ 6# 7 8ifeq ($(CROSS_COMPILE),) 9CROSS_COMPILE := mips_4KC- 10endif 11 12# Handle special prefix in ELDK 4.0 toolchain 13ifneq (,$(findstring 4KCle,$(CROSS_COMPILE))) 14ENDIANNESS := -EL 15endif 16 17ifdef CONFIG_SYS_LITTLE_ENDIAN 18ENDIANNESS := -EL 19endif 20 21ifdef CONFIG_SYS_BIG_ENDIAN 22ENDIANNESS := -EB 23endif 24 25# Default to EB if no endianess is configured 26ENDIANNESS ?= -EB 27 28PLATFORM_CPPFLAGS += -DCONFIG_MIPS -D__MIPS__ 29 30__HAVE_ARCH_GENERIC_BOARD := y 31 32# 33# From Linux arch/mips/Makefile 34# 35# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel 36# code since it only slows down the whole thing. At some point we might make 37# use of global pointer optimizations but their use of $28 conflicts with 38# the current pointer optimization. 39# 40# The DECStation requires an ECOFF kernel for remote booting, other MIPS 41# machines may also. Since BFD is incredibly buggy with respect to 42# crossformat linking we rely on the elf2ecoff tool for format conversion. 43# 44# cflags-y += -G 0 -mno-abicalls -fno-pic -pipe 45# cflags-y += -msoft-float 46# LDFLAGS_vmlinux += -G 0 -static -n -nostdlib 47# MODFLAGS += -mlong-calls 48# 49# On the other hand, we want PIC in the U-Boot code to relocate it from ROM 50# to RAM. $28 is always used as gp. 51# 52PLATFORM_CPPFLAGS += -G 0 -mabicalls -fpic $(ENDIANNESS) 53PLATFORM_CPPFLAGS += -msoft-float 54PLATFORM_LDFLAGS += -G 0 -static -n -nostdlib $(ENDIANNESS) 55PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections 56LDFLAGS_FINAL += --gc-sections -pie 57OBJCOPYFLAGS += -j .text -j .rodata -j .data -j .got 58OBJCOPYFLAGS += -j .u_boot_list -j .rel.dyn 59