1# 2# (C) Copyright 2000-2002 3# Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4# 5# See file CREDITS for list of people who contributed to this 6# project. 7# 8# This program is free software; you can redistribute it and/or 9# modify it under the terms of the GNU General Public License as 10# published by the Free Software Foundation; either version 2 of 11# the License, or (at your option) any later version. 12# 13# This program is distributed in the hope that it will be useful, 14# but WITHOUT ANY WARRANTY; without even the implied warranty of 15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16# GNU General Public License for more details. 17# 18# You should have received a copy of the GNU General Public License 19# along with this program; if not, write to the Free Software 20# Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21# MA 02111-1307 USA 22# 23 24CROSS_COMPILE ?= arm-linux- 25 26ifndef CONFIG_STANDALONE_LOAD_ADDR 27ifeq ($(SOC),omap3) 28CONFIG_STANDALONE_LOAD_ADDR = 0x80300000 29else 30CONFIG_STANDALONE_LOAD_ADDR = 0xc100000 31endif 32endif 33 34PLATFORM_CPPFLAGS += -DCONFIG_ARM -D__ARM__ 35 36# Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb: 37PF_CPPFLAGS_ARM := $(call cc-option,-marm,) 38 39# Try if EABI is supported, else fall back to old API, 40# i. e. for example: 41# - with ELDK 4.2 (EABI supported), use: 42# -mabi=aapcs-linux -mno-thumb-interwork 43# - with ELDK 4.1 (gcc 4.x, no EABI), use: 44# -mabi=apcs-gnu -mno-thumb-interwork 45# - with ELDK 3.1 (gcc 3.x), use: 46# -mapcs-32 -mno-thumb-interwork 47PF_CPPFLAGS_ABI := $(call cc-option,\ 48 -mabi=aapcs-linux -mno-thumb-interwork,\ 49 $(call cc-option,\ 50 -mapcs-32,\ 51 $(call cc-option,\ 52 -mabi=apcs-gnu,\ 53 )\ 54 ) $(call cc-option,-mno-thumb-interwork,)\ 55 ) 56PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI) 57 58# For EABI, make sure to provide raise() 59ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS))) 60# This file is parsed many times, so the string may get added multiple 61# times. Also, the prefix needs to be different based on whether 62# CONFIG_SPL_BUILD is defined or not. 'filter-out' the existing entry 63# before adding the correct one. 64ifdef CONFIG_SPL_BUILD 65PLATFORM_LIBS := $(SPLTREE)/arch/arm/lib/eabi_compat.o \ 66 $(filter-out %/arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS)) 67else 68PLATFORM_LIBS := $(OBJTREE)/arch/arm/lib/eabi_compat.o \ 69 $(filter-out %/arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS)) 70endif 71endif 72 73ifdef CONFIG_SYS_LDSCRIPT 74# need to strip off double quotes 75LDSCRIPT := $(subst ",,$(CONFIG_SYS_LDSCRIPT)) 76else 77LDSCRIPT := $(SRCTREE)/$(CPUDIR)/u-boot.lds 78endif 79 80# needed for relocation 81ifndef CONFIG_NAND_SPL 82LDFLAGS_u-boot += -pie 83endif 84