blob: 0667984b697d62845cb013ba3376cfc5ca01bbf3 [file] [log] [blame]
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
Simon Glass959daa22013-03-11 06:49:57 +000022# Support generic board on ARM
23__HAVE_ARCH_GENERIC_BOARD := y
24
Masahiro Yamada90f984e2014-07-30 14:08:23 +090025PLATFORM_CPPFLAGS += -D__ARM__
Jean-Christophe PLAGNIOL-VILLARD10a451c2009-05-08 20:24:12 +020026
Aneesh V5356f542012-03-08 07:20:19 +000027# Choose between ARM/Thumb instruction sets
28ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
Stefan Agner75d7a0d2014-12-18 18:10:33 +010029AFLAGS_IMPLICIT_IT := $(call as-option,-Wa$(comma)-mimplicit-it=always)
30PF_CPPFLAGS_ARM := $(AFLAGS_IMPLICIT_IT) \
31 $(call cc-option, -mthumb -mthumb-interwork,\
Aneesh V5356f542012-03-08 07:20:19 +000032 $(call cc-option,-marm,)\
33 $(call cc-option,-mno-thumb-interwork,)\
34 )
35else
36PF_CPPFLAGS_ARM := $(call cc-option,-marm,) \
37 $(call cc-option,-mno-thumb-interwork,)
38endif
Wolfgang Denkf772acf2009-08-17 13:17:29 +020039
Tom Rini06a119a2012-03-16 06:34:35 +000040# Only test once
41ifneq ($(CONFIG_SPL_BUILD),y)
Masahiro Yamada388b2e52014-03-05 17:49:22 +090042ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
43archprepare: checkthumb
44
45checkthumb:
46 @if test "$(call cc-version)" -lt "0404"; then \
47 echo -n '*** Your GCC does not produce working '; \
48 echo 'binaries in THUMB mode.'; \
49 echo '*** Your board is configured for THUMB mode.'; \
50 false; \
51 fi
52endif
Tom Rini06a119a2012-03-16 06:34:35 +000053endif
54
Wolfgang Denkf772acf2009-08-17 13:17:29 +020055# Try if EABI is supported, else fall back to old API,
56# i. e. for example:
57# - with ELDK 4.2 (EABI supported), use:
Aneesh V5356f542012-03-08 07:20:19 +000058# -mabi=aapcs-linux
Wolfgang Denkf772acf2009-08-17 13:17:29 +020059# - with ELDK 4.1 (gcc 4.x, no EABI), use:
Aneesh V5356f542012-03-08 07:20:19 +000060# -mabi=apcs-gnu
Wolfgang Denkf772acf2009-08-17 13:17:29 +020061# - with ELDK 3.1 (gcc 3.x), use:
Aneesh V5356f542012-03-08 07:20:19 +000062# -mapcs-32
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000063PF_CPPFLAGS_ABI := $(call cc-option,\
Aneesh V5356f542012-03-08 07:20:19 +000064 -mabi=aapcs-linux,\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000065 $(call cc-option,\
66 -mapcs-32,\
Wolfgang Denkf772acf2009-08-17 13:17:29 +020067 $(call cc-option,\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000068 -mabi=apcs-gnu,\
69 )\
Aneesh V5356f542012-03-08 07:20:19 +000070 )\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000071 )
72PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI)
Wolfgang Denkf772acf2009-08-17 13:17:29 +020073
74# For EABI, make sure to provide raise()
75ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
Aneesh V52534182011-07-19 05:51:41 +000076# 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.
Masahiro Yamadaa86cf892014-02-27 22:40:34 +090080PLATFORM_LIBS := arch/arm/lib/eabi_compat.o \
81 $(filter-out arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS))
Wolfgang Denkf772acf2009-08-17 13:17:29 +020082endif
Albert Aribaud92d5ecb2010-10-11 13:13:28 +020083
Albert Aribaud92d5ecb2010-10-11 13:13:28 +020084# needed for relocation
Stefano Babica4594e42011-01-27 06:03:49 +000085LDFLAGS_u-boot += -pie
Allen Martin0f20bb62012-07-18 13:45:53 +000086
87#
88# FIXME: binutils versions < 2.22 have a bug in the assembler where
89# branches to weak symbols can be incorrectly optimized in thumb mode
90# to a short branch (b.n instruction) that won't reach when the symbol
91# gets preempted
92#
93# http://sourceware.org/bugzilla/show_bug.cgi?id=12532
94#
95ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
96ifeq ($(GAS_BUG_12532),)
97export GAS_BUG_12532:=$(shell if [ $(call binutils-version) -lt 0222 ] ; \
98 then echo y; else echo n; fi)
99endif
100ifeq ($(GAS_BUG_12532),y)
101PLATFORM_RELFLAGS += -fno-optimize-sibling-calls
102endif
103endif
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200104
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200105ifneq ($(CONFIG_SPL_BUILD),y)
Jeroen Hofstee373d7982013-08-24 13:55:38 +0200106# Check that only R_ARM_RELATIVE relocations are generated.
107ALL-y += checkarmreloc
108# The movt / movw can hardcode 16 bit parts of the addresses in the
109# instruction. Relocation is not supported for that case, so disable
110# such usage by requiring word relocations.
111PLATFORM_CPPFLAGS += $(call cc-option, -mword-relocations)
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200112endif
Albert ARIBAUD47ed5dd2013-11-07 14:21:46 +0100113
114# limit ourselves to the sections we want in the .bin.
David Feng0ae76532013-12-14 11:47:35 +0800115ifdef CONFIG_ARM64
Masahiro Yamada95ddcd62014-02-24 11:12:12 +0900116OBJCOPYFLAGS += -j .text -j .rodata -j .data -j .u_boot_list -j .rela.dyn
David Feng0ae76532013-12-14 11:47:35 +0800117else
Marc Zyngierbf433af2014-07-12 14:24:02 +0100118OBJCOPYFLAGS += -j .text -j .secure_text -j .rodata -j .hash -j .data -j .got.plt -j .u_boot_list -j .rel.dyn
David Feng0ae76532013-12-14 11:47:35 +0800119endif
Masahiro Yamada630d2342014-02-24 11:12:21 +0900120
Alexey Ignatov072b2d82014-07-07 03:21:44 +0400121ifdef CONFIG_OF_EMBED
122OBJCOPYFLAGS += -j .dtb.init.rodata
123endif
124
Masahiro Yamada630d2342014-02-24 11:12:21 +0900125ifneq ($(CONFIG_IMX_CONFIG),)
126ifdef CONFIG_SPL
127ifndef CONFIG_SPL_BUILD
128ALL-y += SPL
129endif
130else
Stefano Babice64348f2014-03-31 09:50:35 +0200131ifeq ($(CONFIG_OF_SEPARATE),y)
132ALL-y += u-boot-dtb.imx
133else
Masahiro Yamada630d2342014-02-24 11:12:21 +0900134ALL-y += u-boot.imx
135endif
136endif
Stefano Babice64348f2014-03-31 09:50:35 +0200137endif