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wdenk39f0e5f2002-08-14 20:30:46 +00001#
2# (C) Copyright 2000-2002
3# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4#
Wolfgang Denk1a459662013-07-08 09:37:19 +02005# SPDX-License-Identifier: GPL-2.0+
wdenk39f0e5f2002-08-14 20:30:46 +00006#
7
Wolfgang Denk8ae86b72011-02-04 14:25:17 +01008ifndef CONFIG_STANDALONE_LOAD_ADDR
Lokesh Vutla806d2792013-07-30 11:36:30 +05309ifneq ($(CONFIG_OMAP_COMMON),)
Wolfgang Denk8ae86b72011-02-04 14:25:17 +010010CONFIG_STANDALONE_LOAD_ADDR = 0x80300000
Mike Frysinger262ae0a2009-09-03 23:12:47 -040011else
Wolfgang Denk8ae86b72011-02-04 14:25:17 +010012CONFIG_STANDALONE_LOAD_ADDR = 0xc100000
Mike Frysinger262ae0a2009-09-03 23:12:47 -040013endif
14endif
15
Tom Rinifd725692013-04-25 07:40:22 +000016LDFLAGS_FINAL += --gc-sections
Masahiro Yamada31022742013-09-07 17:42:37 +090017PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections \
David Feng0ae76532013-12-14 11:47:35 +080018 -fno-common -ffixed-r9
Masahiro Yamadabf1af3d2014-01-15 11:00:45 +090019PLATFORM_RELFLAGS += $(call cc-option, -msoft-float) \
20 $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
Tom Rinifd725692013-04-25 07:40:22 +000021
Masahiro Yamada90f984e2014-07-30 14:08:23 +090022PLATFORM_CPPFLAGS += -D__ARM__
Jean-Christophe PLAGNIOL-VILLARD10a451c2009-05-08 20:24:12 +020023
Aneesh V5356f542012-03-08 07:20:19 +000024# Choose between ARM/Thumb instruction sets
25ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
Stefan Agner75d7a0d2014-12-18 18:10:33 +010026AFLAGS_IMPLICIT_IT := $(call as-option,-Wa$(comma)-mimplicit-it=always)
27PF_CPPFLAGS_ARM := $(AFLAGS_IMPLICIT_IT) \
28 $(call cc-option, -mthumb -mthumb-interwork,\
Aneesh V5356f542012-03-08 07:20:19 +000029 $(call cc-option,-marm,)\
30 $(call cc-option,-mno-thumb-interwork,)\
31 )
32else
33PF_CPPFLAGS_ARM := $(call cc-option,-marm,) \
34 $(call cc-option,-mno-thumb-interwork,)
35endif
Wolfgang Denkf772acf2009-08-17 13:17:29 +020036
Tom Rini06a119a2012-03-16 06:34:35 +000037# Only test once
38ifneq ($(CONFIG_SPL_BUILD),y)
Masahiro Yamada388b2e52014-03-05 17:49:22 +090039ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
40archprepare: checkthumb
41
42checkthumb:
43 @if test "$(call cc-version)" -lt "0404"; then \
44 echo -n '*** Your GCC does not produce working '; \
45 echo 'binaries in THUMB mode.'; \
46 echo '*** Your board is configured for THUMB mode.'; \
47 false; \
48 fi
49endif
Tom Rini06a119a2012-03-16 06:34:35 +000050endif
51
Wolfgang Denkf772acf2009-08-17 13:17:29 +020052# Try if EABI is supported, else fall back to old API,
53# i. e. for example:
54# - with ELDK 4.2 (EABI supported), use:
Aneesh V5356f542012-03-08 07:20:19 +000055# -mabi=aapcs-linux
Wolfgang Denkf772acf2009-08-17 13:17:29 +020056# - with ELDK 4.1 (gcc 4.x, no EABI), use:
Aneesh V5356f542012-03-08 07:20:19 +000057# -mabi=apcs-gnu
Wolfgang Denkf772acf2009-08-17 13:17:29 +020058# - with ELDK 3.1 (gcc 3.x), use:
Aneesh V5356f542012-03-08 07:20:19 +000059# -mapcs-32
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000060PF_CPPFLAGS_ABI := $(call cc-option,\
Aneesh V5356f542012-03-08 07:20:19 +000061 -mabi=aapcs-linux,\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000062 $(call cc-option,\
63 -mapcs-32,\
Wolfgang Denkf772acf2009-08-17 13:17:29 +020064 $(call cc-option,\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000065 -mabi=apcs-gnu,\
66 )\
Aneesh V5356f542012-03-08 07:20:19 +000067 )\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000068 )
69PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI)
Wolfgang Denkf772acf2009-08-17 13:17:29 +020070
71# For EABI, make sure to provide raise()
72ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
Aneesh V52534182011-07-19 05:51:41 +000073# This file is parsed many times, so the string may get added multiple
74# times. Also, the prefix needs to be different based on whether
75# CONFIG_SPL_BUILD is defined or not. 'filter-out' the existing entry
76# before adding the correct one.
Masahiro Yamadaa86cf892014-02-27 22:40:34 +090077PLATFORM_LIBS := arch/arm/lib/eabi_compat.o \
78 $(filter-out arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS))
Wolfgang Denkf772acf2009-08-17 13:17:29 +020079endif
Albert Aribaud92d5ecb2010-10-11 13:13:28 +020080
Albert Aribaud92d5ecb2010-10-11 13:13:28 +020081# needed for relocation
Stefano Babica4594e42011-01-27 06:03:49 +000082LDFLAGS_u-boot += -pie
Allen Martin0f20bb62012-07-18 13:45:53 +000083
84#
85# FIXME: binutils versions < 2.22 have a bug in the assembler where
86# branches to weak symbols can be incorrectly optimized in thumb mode
87# to a short branch (b.n instruction) that won't reach when the symbol
88# gets preempted
89#
90# http://sourceware.org/bugzilla/show_bug.cgi?id=12532
91#
92ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
93ifeq ($(GAS_BUG_12532),)
94export GAS_BUG_12532:=$(shell if [ $(call binutils-version) -lt 0222 ] ; \
95 then echo y; else echo n; fi)
96endif
97ifeq ($(GAS_BUG_12532),y)
98PLATFORM_RELFLAGS += -fno-optimize-sibling-calls
99endif
100endif
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200101
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200102ifneq ($(CONFIG_SPL_BUILD),y)
Jeroen Hofstee373d7982013-08-24 13:55:38 +0200103# Check that only R_ARM_RELATIVE relocations are generated.
104ALL-y += checkarmreloc
105# The movt / movw can hardcode 16 bit parts of the addresses in the
106# instruction. Relocation is not supported for that case, so disable
107# such usage by requiring word relocations.
108PLATFORM_CPPFLAGS += $(call cc-option, -mword-relocations)
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200109endif
Albert ARIBAUD47ed5dd2013-11-07 14:21:46 +0100110
111# limit ourselves to the sections we want in the .bin.
David Feng0ae76532013-12-14 11:47:35 +0800112ifdef CONFIG_ARM64
Masahiro Yamada95ddcd62014-02-24 11:12:12 +0900113OBJCOPYFLAGS += -j .text -j .rodata -j .data -j .u_boot_list -j .rela.dyn
David Feng0ae76532013-12-14 11:47:35 +0800114else
Simon Glass5a942a12015-05-04 11:31:02 -0600115OBJCOPYFLAGS += -j .text -j .secure_text -j .rodata -j .hash -j .data -j \
116 .got -j .got.plt -j .u_boot_list -j .rel.dyn
David Feng0ae76532013-12-14 11:47:35 +0800117endif
Masahiro Yamada630d2342014-02-24 11:12:21 +0900118
Alexey Ignatov072b2d82014-07-07 03:21:44 +0400119ifdef CONFIG_OF_EMBED
120OBJCOPYFLAGS += -j .dtb.init.rodata
121endif
122
Masahiro Yamada630d2342014-02-24 11:12:21 +0900123ifneq ($(CONFIG_IMX_CONFIG),)
124ifdef CONFIG_SPL
125ifndef CONFIG_SPL_BUILD
126ALL-y += SPL
127endif
128else
Stefano Babice64348f2014-03-31 09:50:35 +0200129ifeq ($(CONFIG_OF_SEPARATE),y)
130ALL-y += u-boot-dtb.imx
131else
Masahiro Yamada630d2342014-02-24 11:12:21 +0900132ALL-y += u-boot.imx
133endif
134endif
Stefano Babice64348f2014-03-31 09:50:35 +0200135endif