788d4c12b7a4e17aa6a767822230c126a899ecf1
[platform/kernel/u-boot.git] / arch / arm / config.mk
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
24 CROSS_COMPILE ?= arm-linux-
25
26 ifndef CONFIG_STANDALONE_LOAD_ADDR
27 ifeq ($(SOC),omap3)
28 CONFIG_STANDALONE_LOAD_ADDR = 0x80300000
29 else
30 CONFIG_STANDALONE_LOAD_ADDR = 0xc100000
31 endif
32 endif
33
34 PLATFORM_CPPFLAGS += -DCONFIG_ARM -D__ARM__
35
36 # Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
37 PLATFORM_CPPFLAGS += $(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
47 PLATFORM_CPPFLAGS += $(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                                 ) $(call cc-option,-mno-thumb-interwork,)\
55                         )
56
57 # For EABI, make sure to provide raise()
58 ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
59 # This file is parsed several times; make sure to add only once.
60 ifeq (,$(findstring arch/arm/lib/eabi_compat.o,$(PLATFORM_LIBS)))
61 PLATFORM_LIBS += $(OBJTREE)/arch/arm/lib/eabi_compat.o
62 endif
63 endif
64
65 ifdef CONFIG_SYS_LDSCRIPT
66 # need to strip off double quotes
67 LDSCRIPT := $(subst ",,$(CONFIG_SYS_LDSCRIPT))
68 else
69 LDSCRIPT := $(SRCTREE)/$(CPUDIR)/u-boot.lds
70 endif
71
72 # needed for relocation
73 ifndef CONFIG_NAND_SPL
74 LDFLAGS_u-boot += -pie
75 endif