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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 ifeq ($(BOARD),omap2420h4)
27 STANDALONE_LOAD_ADDR = 0x80300000
28 else
29 ifeq ($(SOC),omap3)
30 STANDALONE_LOAD_ADDR = 0x80300000
31 else
32 STANDALONE_LOAD_ADDR = 0xc100000
33 endif
34 endif
35
36 PLATFORM_CPPFLAGS += -DCONFIG_ARM -D__ARM__
37
38 # Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
39 PLATFORM_CPPFLAGS += $(call cc-option,-marm,)
40
41 # Try if EABI is supported, else fall back to old API,
42 # i. e. for example:
43 # - with ELDK 4.2 (EABI supported), use:
44 #       -mabi=aapcs-linux -mno-thumb-interwork
45 # - with ELDK 4.1 (gcc 4.x, no EABI), use:
46 #       -mabi=apcs-gnu -mno-thumb-interwork
47 # - with ELDK 3.1 (gcc 3.x), use:
48 #       -mapcs-32 -mno-thumb-interwork
49 PLATFORM_CPPFLAGS += $(call cc-option,\
50                                 -mabi=aapcs-linux -mno-thumb-interwork,\
51                                 $(call cc-option,\
52                                         -mapcs-32,\
53                                         $(call cc-option,\
54                                                 -mabi=apcs-gnu,\
55                                         )\
56                                 ) $(call cc-option,-mno-thumb-interwork,)\
57                         )
58
59 # For EABI, make sure to provide raise()
60 ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
61 # This file is parsed several times; make sure to add only once.
62 ifeq (,$(findstring arch/arm/lib/eabi_compat.o,$(PLATFORM_LIBS)))
63 PLATFORM_LIBS += $(OBJTREE)/arch/arm/lib/eabi_compat.o
64 endif
65 endif
66 LDSCRIPT := $(SRCTREE)/$(CPUDIR)/u-boot.lds
67
68 # needed for relocation
69 ifndef CONFIG_NAND_SPL
70 PLATFORM_LDFLAGS += -pie
71 endif