2 # (C) Copyright 2000-2002
3 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 # See file CREDITS for list of people who contributed to this
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.
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.
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,
24 CROSS_COMPILE ?= arm-linux-
26 ifndef CONFIG_STANDALONE_LOAD_ADDR
28 CONFIG_STANDALONE_LOAD_ADDR = 0x80300000
30 CONFIG_STANDALONE_LOAD_ADDR = 0xc100000
34 PLATFORM_CPPFLAGS += -DCONFIG_ARM -D__ARM__
36 # Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
37 PF_CPPFLAGS_ARM := $(call cc-option,-marm,)
39 # Try if EABI is supported, else fall back to old API,
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
47 PF_CPPFLAGS_ABI := $(call cc-option,\
48 -mabi=aapcs-linux -mno-thumb-interwork,\
54 ) $(call cc-option,-mno-thumb-interwork,)\
56 PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI)
58 # For EABI, make sure to provide raise()
59 ifneq (,$(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.
64 ifdef CONFIG_SPL_BUILD
65 PLATFORM_LIBS := $(SPLTREE)/arch/arm/lib/eabi_compat.o \
66 $(filter-out %/arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS))
68 PLATFORM_LIBS := $(OBJTREE)/arch/arm/lib/eabi_compat.o \
69 $(filter-out %/arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS))
73 ifdef CONFIG_SYS_LDSCRIPT
74 # need to strip off double quotes
75 LDSCRIPT := $(subst ",,$(CONFIG_SYS_LDSCRIPT))
77 LDSCRIPT := $(SRCTREE)/$(CPUDIR)/u-boot.lds
80 # needed for relocation
81 ifndef CONFIG_NAND_SPL
82 LDFLAGS_u-boot += -pie