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 ($(SOC),omap3) 28CONFIG_STANDALONE_LOAD_ADDR = 0x80300000 29else 30CONFIG_STANDALONE_LOAD_ADDR = 0xc100000 31endif 32endif 33 34PLATFORM_CPPFLAGS += -DCONFIG_ARM -D__ARM__ 35 36# Choose between ARM/Thumb instruction sets 37ifeq ($(CONFIG_SYS_THUMB_BUILD),y) 38PF_CPPFLAGS_ARM := $(call cc-option, -mthumb -mthumb-interwork,\ 39 $(call cc-option,-marm,)\ 40 $(call cc-option,-mno-thumb-interwork,)\ 41 ) 42else 43PF_CPPFLAGS_ARM := $(call cc-option,-marm,) \ 44 $(call cc-option,-mno-thumb-interwork,) 45endif 46 47# Try if EABI is supported, else fall back to old API, 48# i. e. for example: 49# - with ELDK 4.2 (EABI supported), use: 50# -mabi=aapcs-linux 51# - with ELDK 4.1 (gcc 4.x, no EABI), use: 52# -mabi=apcs-gnu 53# - with ELDK 3.1 (gcc 3.x), use: 54# -mapcs-32 55PF_CPPFLAGS_ABI := $(call cc-option,\ 56 -mabi=aapcs-linux,\ 57 $(call cc-option,\ 58 -mapcs-32,\ 59 $(call cc-option,\ 60 -mabi=apcs-gnu,\ 61 )\ 62 )\ 63 ) 64PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI) 65 66# For EABI, make sure to provide raise() 67ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS))) 68# This file is parsed many times, so the string may get added multiple 69# times. Also, the prefix needs to be different based on whether 70# CONFIG_SPL_BUILD is defined or not. 'filter-out' the existing entry 71# before adding the correct one. 72ifdef CONFIG_SPL_BUILD 73PLATFORM_LIBS := $(SPLTREE)/arch/arm/lib/eabi_compat.o \ 74 $(filter-out %/arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS)) 75else 76PLATFORM_LIBS := $(OBJTREE)/arch/arm/lib/eabi_compat.o \ 77 $(filter-out %/arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS)) 78endif 79endif 80 81# needed for relocation 82ifndef CONFIG_NAND_SPL 83LDFLAGS_u-boot += -pie 84endif 85