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
27 ifneq ($(CONFIG_AM33XX
)$(CONFIG_OMAP34XX
)$(CONFIG_OMAP44XX
)$(CONFIG_OMAP54XX
)$(CONFIG_TI814X
),)
28 CONFIG_STANDALONE_LOAD_ADDR
= 0x80300000
30 CONFIG_STANDALONE_LOAD_ADDR
= 0xc100000
34 # Support generic board on ARM
35 __HAVE_ARCH_GENERIC_BOARD
:= y
37 PLATFORM_CPPFLAGS
+= -DCONFIG_ARM
-D__ARM__
39 # Choose between ARM/Thumb instruction sets
40 ifeq ($(CONFIG_SYS_THUMB_BUILD
),y
)
41 PF_CPPFLAGS_ARM
:= $(call cc-option
, -mthumb
-mthumb-interwork
,\
42 $(call cc-option
,-marm
,)\
43 $(call cc-option
,-mno-thumb-interwork
,)\
46 PF_CPPFLAGS_ARM
:= $(call cc-option
,-marm
,) \
47 $(call cc-option
,-mno-thumb-interwork
,)
51 ifneq ($(CONFIG_SPL_BUILD
),y
)
52 ALL-
$(CONFIG_SYS_THUMB_BUILD
) += checkthumb
55 # Try if EABI is supported, else fall back to old API,
57 # - with ELDK 4.2 (EABI supported), use:
59 # - with ELDK 4.1 (gcc 4.x, no EABI), use:
61 # - with ELDK 3.1 (gcc 3.x), use:
63 PF_CPPFLAGS_ABI
:= $(call cc-option
,\
72 PLATFORM_CPPFLAGS
+= $(PF_CPPFLAGS_ARM
) $(PF_CPPFLAGS_ABI
)
74 # For EABI, make sure to provide raise()
75 ifneq (,$(findstring -mabi
=aapcs-linux
,$(PLATFORM_CPPFLAGS
)))
76 # This file is parsed many times, so the string may get added multiple
77 # times. Also, the prefix needs to be different based on whether
78 # CONFIG_SPL_BUILD is defined or not. 'filter-out' the existing entry
79 # before adding the correct one.
80 ifdef CONFIG_SPL_BUILD
81 PLATFORM_LIBS
:= $(SPLTREE
)/arch
/arm
/lib
/eabi_compat.o \
82 $(filter-out %/arch
/arm
/lib
/eabi_compat.o
, $(PLATFORM_LIBS
))
84 PLATFORM_LIBS
:= $(OBJTREE
)/arch
/arm
/lib
/eabi_compat.o \
85 $(filter-out %/arch
/arm
/lib
/eabi_compat.o
, $(PLATFORM_LIBS
))
89 # needed for relocation
90 ifndef CONFIG_NAND_SPL
91 LDFLAGS_u-boot
+= -pie
95 # FIXME: binutils versions < 2.22 have a bug in the assembler where
96 # branches to weak symbols can be incorrectly optimized in thumb mode
97 # to a short branch (b.n instruction) that won't reach when the symbol
100 # http://sourceware.org/bugzilla/show_bug.cgi?id=12532
102 ifeq ($(CONFIG_SYS_THUMB_BUILD
),y
)
103 ifeq ($(GAS_BUG_12532
),)
104 export GAS_BUG_12532
:=$(shell if
[ $(call binutils-version
) -lt
0222 ] ; \
105 then echo y
; else echo n
; fi
)
107 ifeq ($(GAS_BUG_12532
),y
)
108 PLATFORM_RELFLAGS
+= -fno-optimize-sibling-calls