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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
Tom Rini187f9dc2016-11-07 21:34:55 -05009ifneq ($(CONFIG_ARCH_OMAP2),)
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
Simon Glassdd46eef2016-11-07 08:47:10 -070016CFLAGS_NON_EFI := -fno-pic -ffixed-r9 -ffunction-sections -fdata-sections
17CFLAGS_EFI := -fpic -fshort-wchar
18
Tom Rinifd725692013-04-25 07:40:22 +000019LDFLAGS_FINAL += --gc-sections
Masahiro Yamada31022742013-09-07 17:42:37 +090020PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections \
David Feng0ae76532013-12-14 11:47:35 +080021 -fno-common -ffixed-r9
Masahiro Yamadabf1af3d2014-01-15 11:00:45 +090022PLATFORM_RELFLAGS += $(call cc-option, -msoft-float) \
23 $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
Tom Rinifd725692013-04-25 07:40:22 +000024
Tom Rinib745e822016-03-16 19:55:55 -040025# LLVM support
26LLVMS_RELFLAGS := $(call cc-option,-mllvm,) \
27 $(call cc-option,-target arm-none-eabi,) \
28 $(call cc-option,-arm-use-movt=0,)
29PLATFORM_RELFLAGS += $(LLVM_RELFLAGS)
30
Masahiro Yamada90f984e2014-07-30 14:08:23 +090031PLATFORM_CPPFLAGS += -D__ARM__
Jean-Christophe PLAGNIOL-VILLARD10a451c2009-05-08 20:24:12 +020032
Aneesh V5356f542012-03-08 07:20:19 +000033# Choose between ARM/Thumb instruction sets
Tom Rini3a649402017-03-18 09:01:44 -040034ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
Stefan Agner75d7a0d2014-12-18 18:10:33 +010035AFLAGS_IMPLICIT_IT := $(call as-option,-Wa$(comma)-mimplicit-it=always)
36PF_CPPFLAGS_ARM := $(AFLAGS_IMPLICIT_IT) \
37 $(call cc-option, -mthumb -mthumb-interwork,\
Aneesh V5356f542012-03-08 07:20:19 +000038 $(call cc-option,-marm,)\
39 $(call cc-option,-mno-thumb-interwork,)\
40 )
41else
42PF_CPPFLAGS_ARM := $(call cc-option,-marm,) \
43 $(call cc-option,-mno-thumb-interwork,)
44endif
Wolfgang Denkf772acf2009-08-17 13:17:29 +020045
Tom Rini06a119a2012-03-16 06:34:35 +000046# Only test once
Tom Rini3a649402017-03-18 09:01:44 -040047ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
Masahiro Yamada388b2e52014-03-05 17:49:22 +090048archprepare: checkthumb
49
50checkthumb:
Tom Rini6e2f1532016-01-19 20:39:02 -050051 @if test "$(call cc-name)" = "gcc" -a \
52 "$(call cc-version)" -lt "0404"; then \
Masahiro Yamada388b2e52014-03-05 17:49:22 +090053 echo -n '*** Your GCC does not produce working '; \
54 echo 'binaries in THUMB mode.'; \
55 echo '*** Your board is configured for THUMB mode.'; \
56 false; \
57 fi
58endif
Tom Rini06a119a2012-03-16 06:34:35 +000059
Wolfgang Denkf772acf2009-08-17 13:17:29 +020060# Try if EABI is supported, else fall back to old API,
61# i. e. for example:
62# - with ELDK 4.2 (EABI supported), use:
Aneesh V5356f542012-03-08 07:20:19 +000063# -mabi=aapcs-linux
Wolfgang Denkf772acf2009-08-17 13:17:29 +020064# - with ELDK 4.1 (gcc 4.x, no EABI), use:
Aneesh V5356f542012-03-08 07:20:19 +000065# -mabi=apcs-gnu
Wolfgang Denkf772acf2009-08-17 13:17:29 +020066# - with ELDK 3.1 (gcc 3.x), use:
Aneesh V5356f542012-03-08 07:20:19 +000067# -mapcs-32
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000068PF_CPPFLAGS_ABI := $(call cc-option,\
Aneesh V5356f542012-03-08 07:20:19 +000069 -mabi=aapcs-linux,\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000070 $(call cc-option,\
71 -mapcs-32,\
Wolfgang Denkf772acf2009-08-17 13:17:29 +020072 $(call cc-option,\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000073 -mabi=apcs-gnu,\
74 )\
Aneesh V5356f542012-03-08 07:20:19 +000075 )\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000076 )
77PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI)
Wolfgang Denkf772acf2009-08-17 13:17:29 +020078
79# For EABI, make sure to provide raise()
80ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
Aneesh V52534182011-07-19 05:51:41 +000081# This file is parsed many times, so the string may get added multiple
82# times. Also, the prefix needs to be different based on whether
83# CONFIG_SPL_BUILD is defined or not. 'filter-out' the existing entry
84# before adding the correct one.
Masahiro Yamadaa86cf892014-02-27 22:40:34 +090085PLATFORM_LIBS := arch/arm/lib/eabi_compat.o \
86 $(filter-out arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS))
Wolfgang Denkf772acf2009-08-17 13:17:29 +020087endif
Albert Aribaud92d5ecb2010-10-11 13:13:28 +020088
Albert Aribaud92d5ecb2010-10-11 13:13:28 +020089# needed for relocation
Stefano Babica4594e42011-01-27 06:03:49 +000090LDFLAGS_u-boot += -pie
Allen Martin0f20bb62012-07-18 13:45:53 +000091
92#
93# FIXME: binutils versions < 2.22 have a bug in the assembler where
94# branches to weak symbols can be incorrectly optimized in thumb mode
95# to a short branch (b.n instruction) that won't reach when the symbol
96# gets preempted
97#
98# http://sourceware.org/bugzilla/show_bug.cgi?id=12532
99#
Tom Rini3a649402017-03-18 09:01:44 -0400100ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
Allen Martin0f20bb62012-07-18 13:45:53 +0000101ifeq ($(GAS_BUG_12532),)
102export GAS_BUG_12532:=$(shell if [ $(call binutils-version) -lt 0222 ] ; \
103 then echo y; else echo n; fi)
104endif
105ifeq ($(GAS_BUG_12532),y)
106PLATFORM_RELFLAGS += -fno-optimize-sibling-calls
107endif
108endif
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200109
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200110ifneq ($(CONFIG_SPL_BUILD),y)
Jeroen Hofstee373d7982013-08-24 13:55:38 +0200111# Check that only R_ARM_RELATIVE relocations are generated.
112ALL-y += checkarmreloc
113# The movt / movw can hardcode 16 bit parts of the addresses in the
114# instruction. Relocation is not supported for that case, so disable
115# such usage by requiring word relocations.
116PLATFORM_CPPFLAGS += $(call cc-option, -mword-relocations)
Peng Fan397d7d52016-01-30 12:10:49 +0800117PLATFORM_CPPFLAGS += $(call cc-option, -fno-pic)
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200118endif
Albert ARIBAUD47ed5dd2013-11-07 14:21:46 +0100119
120# limit ourselves to the sections we want in the .bin.
David Feng0ae76532013-12-14 11:47:35 +0800121ifdef CONFIG_ARM64
macro.wave.z@gmail.comdf88cb32016-12-08 11:58:22 +0800122OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .data \
Philipp Tomsich4b0d5062017-03-24 19:08:55 +0100123 -j .u_boot_list -j .rela.dyn -j .got -j .got.plt
David Feng0ae76532013-12-14 11:47:35 +0800124else
Chen-Yu Tsaia5aa7ff2016-07-05 21:45:06 +0800125OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .hash \
126 -j .data -j .got -j .got.plt -j .u_boot_list -j .rel.dyn
David Feng0ae76532013-12-14 11:47:35 +0800127endif
Masahiro Yamada630d2342014-02-24 11:12:21 +0900128
Alexey Ignatov072b2d82014-07-07 03:21:44 +0400129ifdef CONFIG_OF_EMBED
130OBJCOPYFLAGS += -j .dtb.init.rodata
131endif
132
Alexander Graf50149ea2016-03-04 01:10:01 +0100133ifdef CONFIG_EFI_LOADER
134OBJCOPYFLAGS += -j .efi_runtime -j .efi_runtime_rel
135endif
136
Masahiro Yamada630d2342014-02-24 11:12:21 +0900137ifneq ($(CONFIG_IMX_CONFIG),)
138ifdef CONFIG_SPL
139ifndef CONFIG_SPL_BUILD
140ALL-y += SPL
141endif
142else
Stefano Babice64348f2014-03-31 09:50:35 +0200143ifeq ($(CONFIG_OF_SEPARATE),y)
144ALL-y += u-boot-dtb.imx
145else
Masahiro Yamada630d2342014-02-24 11:12:21 +0900146ALL-y += u-boot.imx
147endif
148endif
Albert ARIBAUD \(3ADEV\)ed0c2c02016-09-26 09:08:06 +0200149ifneq ($(CONFIG_VF610),)
150ALL-y += u-boot.vyb
151endif
Stefano Babice64348f2014-03-31 09:50:35 +0200152endif
Simon Glassdd46eef2016-11-07 08:47:10 -0700153
154EFI_LDS := elf_arm_efi.lds
155EFI_CRT0 := crt0_arm_efi.o
156EFI_RELOC := reloc_arm_efi.o