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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
Tom Rinib745e822016-03-16 19:55:55 -040022# LLVM support
23LLVMS_RELFLAGS := $(call cc-option,-mllvm,) \
24 $(call cc-option,-target arm-none-eabi,) \
25 $(call cc-option,-arm-use-movt=0,)
26PLATFORM_RELFLAGS += $(LLVM_RELFLAGS)
27
Masahiro Yamada90f984e2014-07-30 14:08:23 +090028PLATFORM_CPPFLAGS += -D__ARM__
Jean-Christophe PLAGNIOL-VILLARD10a451c2009-05-08 20:24:12 +020029
Aneesh V5356f542012-03-08 07:20:19 +000030# Choose between ARM/Thumb instruction sets
31ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
Stefan Agner75d7a0d2014-12-18 18:10:33 +010032AFLAGS_IMPLICIT_IT := $(call as-option,-Wa$(comma)-mimplicit-it=always)
33PF_CPPFLAGS_ARM := $(AFLAGS_IMPLICIT_IT) \
34 $(call cc-option, -mthumb -mthumb-interwork,\
Aneesh V5356f542012-03-08 07:20:19 +000035 $(call cc-option,-marm,)\
36 $(call cc-option,-mno-thumb-interwork,)\
37 )
38else
39PF_CPPFLAGS_ARM := $(call cc-option,-marm,) \
40 $(call cc-option,-mno-thumb-interwork,)
41endif
Wolfgang Denkf772acf2009-08-17 13:17:29 +020042
Tom Rini06a119a2012-03-16 06:34:35 +000043# Only test once
44ifneq ($(CONFIG_SPL_BUILD),y)
Masahiro Yamada388b2e52014-03-05 17:49:22 +090045ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
46archprepare: checkthumb
47
48checkthumb:
Tom Rini6e2f1532016-01-19 20:39:02 -050049 @if test "$(call cc-name)" = "gcc" -a \
50 "$(call cc-version)" -lt "0404"; then \
Masahiro Yamada388b2e52014-03-05 17:49:22 +090051 echo -n '*** Your GCC does not produce working '; \
52 echo 'binaries in THUMB mode.'; \
53 echo '*** Your board is configured for THUMB mode.'; \
54 false; \
55 fi
56endif
Tom Rini06a119a2012-03-16 06:34:35 +000057endif
58
Wolfgang Denkf772acf2009-08-17 13:17:29 +020059# Try if EABI is supported, else fall back to old API,
60# i. e. for example:
61# - with ELDK 4.2 (EABI supported), use:
Aneesh V5356f542012-03-08 07:20:19 +000062# -mabi=aapcs-linux
Wolfgang Denkf772acf2009-08-17 13:17:29 +020063# - with ELDK 4.1 (gcc 4.x, no EABI), use:
Aneesh V5356f542012-03-08 07:20:19 +000064# -mabi=apcs-gnu
Wolfgang Denkf772acf2009-08-17 13:17:29 +020065# - with ELDK 3.1 (gcc 3.x), use:
Aneesh V5356f542012-03-08 07:20:19 +000066# -mapcs-32
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000067PF_CPPFLAGS_ABI := $(call cc-option,\
Aneesh V5356f542012-03-08 07:20:19 +000068 -mabi=aapcs-linux,\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000069 $(call cc-option,\
70 -mapcs-32,\
Wolfgang Denkf772acf2009-08-17 13:17:29 +020071 $(call cc-option,\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000072 -mabi=apcs-gnu,\
73 )\
Aneesh V5356f542012-03-08 07:20:19 +000074 )\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000075 )
76PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI)
Wolfgang Denkf772acf2009-08-17 13:17:29 +020077
78# For EABI, make sure to provide raise()
79ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
Aneesh V52534182011-07-19 05:51:41 +000080# This file is parsed many times, so the string may get added multiple
81# times. Also, the prefix needs to be different based on whether
82# CONFIG_SPL_BUILD is defined or not. 'filter-out' the existing entry
83# before adding the correct one.
Masahiro Yamadaa86cf892014-02-27 22:40:34 +090084PLATFORM_LIBS := arch/arm/lib/eabi_compat.o \
85 $(filter-out arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS))
Wolfgang Denkf772acf2009-08-17 13:17:29 +020086endif
Albert Aribaud92d5ecb2010-10-11 13:13:28 +020087
Albert Aribaud92d5ecb2010-10-11 13:13:28 +020088# needed for relocation
Stefano Babica4594e42011-01-27 06:03:49 +000089LDFLAGS_u-boot += -pie
Allen Martin0f20bb62012-07-18 13:45:53 +000090
91#
92# FIXME: binutils versions < 2.22 have a bug in the assembler where
93# branches to weak symbols can be incorrectly optimized in thumb mode
94# to a short branch (b.n instruction) that won't reach when the symbol
95# gets preempted
96#
97# http://sourceware.org/bugzilla/show_bug.cgi?id=12532
98#
99ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
100ifeq ($(GAS_BUG_12532),)
101export GAS_BUG_12532:=$(shell if [ $(call binutils-version) -lt 0222 ] ; \
102 then echo y; else echo n; fi)
103endif
104ifeq ($(GAS_BUG_12532),y)
105PLATFORM_RELFLAGS += -fno-optimize-sibling-calls
106endif
107endif
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200108
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200109ifneq ($(CONFIG_SPL_BUILD),y)
Jeroen Hofstee373d7982013-08-24 13:55:38 +0200110# Check that only R_ARM_RELATIVE relocations are generated.
111ALL-y += checkarmreloc
112# The movt / movw can hardcode 16 bit parts of the addresses in the
113# instruction. Relocation is not supported for that case, so disable
114# such usage by requiring word relocations.
115PLATFORM_CPPFLAGS += $(call cc-option, -mword-relocations)
Peng Fan397d7d52016-01-30 12:10:49 +0800116PLATFORM_CPPFLAGS += $(call cc-option, -fno-pic)
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200117endif
Albert ARIBAUD47ed5dd2013-11-07 14:21:46 +0100118
119# limit ourselves to the sections we want in the .bin.
David Feng0ae76532013-12-14 11:47:35 +0800120ifdef CONFIG_ARM64
Masahiro Yamada95ddcd62014-02-24 11:12:12 +0900121OBJCOPYFLAGS += -j .text -j .rodata -j .data -j .u_boot_list -j .rela.dyn
David Feng0ae76532013-12-14 11:47:35 +0800122else
Chen-Yu Tsaia5aa7ff2016-07-05 21:45:06 +0800123OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .hash \
124 -j .data -j .got -j .got.plt -j .u_boot_list -j .rel.dyn
David Feng0ae76532013-12-14 11:47:35 +0800125endif
Masahiro Yamada630d2342014-02-24 11:12:21 +0900126
Alexey Ignatov072b2d82014-07-07 03:21:44 +0400127ifdef CONFIG_OF_EMBED
128OBJCOPYFLAGS += -j .dtb.init.rodata
129endif
130
Alexander Graf50149ea2016-03-04 01:10:01 +0100131ifdef CONFIG_EFI_LOADER
132OBJCOPYFLAGS += -j .efi_runtime -j .efi_runtime_rel
133endif
134
Masahiro Yamada630d2342014-02-24 11:12:21 +0900135ifneq ($(CONFIG_IMX_CONFIG),)
136ifdef CONFIG_SPL
137ifndef CONFIG_SPL_BUILD
138ALL-y += SPL
139endif
140else
Stefano Babice64348f2014-03-31 09:50:35 +0200141ifeq ($(CONFIG_OF_SEPARATE),y)
142ALL-y += u-boot-dtb.imx
143else
Masahiro Yamada630d2342014-02-24 11:12:21 +0900144ALL-y += u-boot.imx
145endif
146endif
Stefano Babice64348f2014-03-31 09:50:35 +0200147endif