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Tom Rini10e47792018-05-06 17:58:06 -04001# SPDX-License-Identifier: GPL-2.0+
wdenk39f0e5f2002-08-14 20:30:46 +00002#
3# (C) Copyright 2000-2002
4# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
wdenk39f0e5f2002-08-14 20:30:46 +00005
Wolfgang Denk33a57342011-02-04 14:25:17 +01006ifndef CONFIG_STANDALONE_LOAD_ADDR
Masahiro Yamada6e1288c2017-04-25 13:10:11 +09007ifneq ($(CONFIG_ARCH_OMAP2PLUS),)
Wolfgang Denk33a57342011-02-04 14:25:17 +01008CONFIG_STANDALONE_LOAD_ADDR = 0x80300000
Mike Frysinger5b660442009-09-03 23:12:47 -04009else
Wolfgang Denk33a57342011-02-04 14:25:17 +010010CONFIG_STANDALONE_LOAD_ADDR = 0xc100000
Mike Frysinger5b660442009-09-03 23:12:47 -040011endif
12endif
13
Joel Peshkin369d87a2021-04-11 11:21:58 +020014CFLAGS_NON_EFI := -fno-pic -ffixed-r9 -ffunction-sections -fdata-sections \
15 -fstack-protector-strong
Simon Glassfc03fb92016-11-07 08:47:10 -070016CFLAGS_EFI := -fpic -fshort-wchar
17
Marek Behún701bc2e2021-05-20 13:24:24 +020018ifneq ($(CONFIG_LTO)$(CONFIG_USE_PRIVATE_LIBGCC),yy)
Tom Riniefc90722013-04-25 07:40:22 +000019LDFLAGS_FINAL += --gc-sections
Marek Behún701bc2e2021-05-20 13:24:24 +020020endif
Marek Behún2a9079e2021-05-20 13:24:23 +020021
22ifndef CONFIG_LTO
23PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections
24endif
25
26PLATFORM_RELFLAGS += -fno-common -ffixed-r9
Masahiro Yamadab8a26252014-01-15 11:00:45 +090027PLATFORM_RELFLAGS += $(call cc-option, -msoft-float) \
28 $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
Tom Riniefc90722013-04-25 07:40:22 +000029
Tom Rini1088ec12016-03-16 19:55:55 -040030# LLVM support
Tom Rinida62bb92018-04-22 19:15:03 -040031LLVM_RELFLAGS := $(call cc-option,-mllvm,) \
32 $(call cc-option,-mno-movt,)
Tom Rini1088ec12016-03-16 19:55:55 -040033PLATFORM_RELFLAGS += $(LLVM_RELFLAGS)
34
Masahiro Yamada4869aee2014-07-30 14:08:23 +090035PLATFORM_CPPFLAGS += -D__ARM__
Jean-Christophe PLAGNIOL-VILLARD7580b862009-05-08 20:24:12 +020036
Álvaro Fernández Rojas1f86ebd2017-04-20 20:36:25 +020037ifdef CONFIG_ARM64
38PLATFORM_ELFFLAGS += -B aarch64 -O elf64-littleaarch64
39else
40PLATFORM_ELFFLAGS += -B arm -O elf32-littlearm
41endif
42
Aneesh Vb8e40802012-03-08 07:20:19 +000043# Choose between ARM/Thumb instruction sets
Tom Rini1c640a62017-03-18 09:01:44 -040044ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
Stefan Agnera257f2e2014-12-18 18:10:33 +010045AFLAGS_IMPLICIT_IT := $(call as-option,-Wa$(comma)-mimplicit-it=always)
46PF_CPPFLAGS_ARM := $(AFLAGS_IMPLICIT_IT) \
47 $(call cc-option, -mthumb -mthumb-interwork,\
Aneesh Vb8e40802012-03-08 07:20:19 +000048 $(call cc-option,-marm,)\
49 $(call cc-option,-mno-thumb-interwork,)\
50 )
51else
52PF_CPPFLAGS_ARM := $(call cc-option,-marm,) \
53 $(call cc-option,-mno-thumb-interwork,)
54endif
Wolfgang Denkd47f4862009-08-17 13:17:29 +020055
Tom Rini20eef6c2012-03-16 06:34:35 +000056# Only test once
Tom Rini1c640a62017-03-18 09:01:44 -040057ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
Tom Rinie1250132017-04-17 09:18:00 -040058archprepare: checkthumb checkgcc6
Masahiro Yamada54ead2c2014-03-05 17:49:22 +090059
60checkthumb:
Tom Rini7aaf2772016-01-19 20:39:02 -050061 @if test "$(call cc-name)" = "gcc" -a \
62 "$(call cc-version)" -lt "0404"; then \
Masahiro Yamada54ead2c2014-03-05 17:49:22 +090063 echo -n '*** Your GCC does not produce working '; \
64 echo 'binaries in THUMB mode.'; \
65 echo '*** Your board is configured for THUMB mode.'; \
66 false; \
67 fi
Tom Rinie1250132017-04-17 09:18:00 -040068else
69archprepare: checkgcc6
Masahiro Yamada54ead2c2014-03-05 17:49:22 +090070endif
Tom Rini20eef6c2012-03-16 06:34:35 +000071
Tom Rinie1250132017-04-17 09:18:00 -040072checkgcc6:
73 @if test "$(call cc-name)" = "gcc" -a \
74 "$(call cc-version)" -lt "0600"; then \
Tom Rinicfa4c712017-12-02 20:11:31 -050075 echo '*** Your GCC is older than 6.0 and is not supported'; \
76 false; \
Tom Rinie1250132017-04-17 09:18:00 -040077 fi
78
79
Wolfgang Denkd47f4862009-08-17 13:17:29 +020080# Try if EABI is supported, else fall back to old API,
81# i. e. for example:
82# - with ELDK 4.2 (EABI supported), use:
Aneesh Vb8e40802012-03-08 07:20:19 +000083# -mabi=aapcs-linux
Wolfgang Denkd47f4862009-08-17 13:17:29 +020084# - with ELDK 4.1 (gcc 4.x, no EABI), use:
Aneesh Vb8e40802012-03-08 07:20:19 +000085# -mabi=apcs-gnu
Wolfgang Denkd47f4862009-08-17 13:17:29 +020086# - with ELDK 3.1 (gcc 3.x), use:
Aneesh Vb8e40802012-03-08 07:20:19 +000087# -mapcs-32
Wolfgang Denk9209ed52011-11-01 20:54:02 +000088PF_CPPFLAGS_ABI := $(call cc-option,\
Aneesh Vb8e40802012-03-08 07:20:19 +000089 -mabi=aapcs-linux,\
Wolfgang Denk9209ed52011-11-01 20:54:02 +000090 $(call cc-option,\
91 -mapcs-32,\
Wolfgang Denkd47f4862009-08-17 13:17:29 +020092 $(call cc-option,\
Wolfgang Denk9209ed52011-11-01 20:54:02 +000093 -mabi=apcs-gnu,\
94 )\
Aneesh Vb8e40802012-03-08 07:20:19 +000095 )\
Wolfgang Denk9209ed52011-11-01 20:54:02 +000096 )
97PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI)
Wolfgang Denkd47f4862009-08-17 13:17:29 +020098
99# For EABI, make sure to provide raise()
100ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
Aneesh Vad356282011-07-19 05:51:41 +0000101# This file is parsed many times, so the string may get added multiple
102# times. Also, the prefix needs to be different based on whether
103# CONFIG_SPL_BUILD is defined or not. 'filter-out' the existing entry
104# before adding the correct one.
Masahiro Yamada933c7e02014-02-27 22:40:34 +0900105PLATFORM_LIBS := arch/arm/lib/eabi_compat.o \
106 $(filter-out arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS))
Wolfgang Denkd47f4862009-08-17 13:17:29 +0200107endif
Albert Aribaud6d1fcb12010-10-11 13:13:28 +0200108
Albert Aribaud6d1fcb12010-10-11 13:13:28 +0200109# needed for relocation
Stefano Babic8b378e12011-01-27 06:03:49 +0000110LDFLAGS_u-boot += -pie
Allen Martina8c7aea2012-07-18 13:45:53 +0000111
112#
113# FIXME: binutils versions < 2.22 have a bug in the assembler where
114# branches to weak symbols can be incorrectly optimized in thumb mode
115# to a short branch (b.n instruction) that won't reach when the symbol
116# gets preempted
117#
118# http://sourceware.org/bugzilla/show_bug.cgi?id=12532
119#
Tom Rini1c640a62017-03-18 09:01:44 -0400120ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
Allen Martina8c7aea2012-07-18 13:45:53 +0000121ifeq ($(GAS_BUG_12532),)
122export GAS_BUG_12532:=$(shell if [ $(call binutils-version) -lt 0222 ] ; \
123 then echo y; else echo n; fi)
124endif
125ifeq ($(GAS_BUG_12532),y)
126PLATFORM_RELFLAGS += -fno-optimize-sibling-calls
127endif
128endif
Albert ARIBAUD446dd122013-06-11 14:17:30 +0200129
Albert ARIBAUD446dd122013-06-11 14:17:30 +0200130ifneq ($(CONFIG_SPL_BUILD),y)
Jeroen Hofsteea2f61ca2013-08-24 13:55:38 +0200131# Check that only R_ARM_RELATIVE relocations are generated.
Simon Glassc46090d2020-07-19 13:56:01 -0600132INPUTS-y += checkarmreloc
Jeroen Hofsteea2f61ca2013-08-24 13:55:38 +0200133# The movt / movw can hardcode 16 bit parts of the addresses in the
134# instruction. Relocation is not supported for that case, so disable
135# such usage by requiring word relocations.
136PLATFORM_CPPFLAGS += $(call cc-option, -mword-relocations)
Peng Fan18ad9292016-01-30 12:10:49 +0800137PLATFORM_CPPFLAGS += $(call cc-option, -fno-pic)
Albert ARIBAUD446dd122013-06-11 14:17:30 +0200138endif
Albert ARIBAUD95fc6d62013-11-07 14:21:46 +0100139
140# limit ourselves to the sections we want in the .bin.
David Feng85fd5f12013-12-14 11:47:35 +0800141ifdef CONFIG_ARM64
macro.wave.z@gmail.com01bd3342016-12-08 11:58:22 +0800142OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .data \
Simon Glass01361a22017-11-13 18:55:02 -0700143 -j .u_boot_list -j .rela.dyn -j .got -j .got.plt \
Alexander Graf94a10f22018-06-12 07:48:37 +0200144 -j .binman_sym_table -j .text_rest
David Feng85fd5f12013-12-14 11:47:35 +0800145else
Chen-Yu Tsai5ed03872016-07-05 21:45:06 +0800146OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .hash \
Simon Glass01361a22017-11-13 18:55:02 -0700147 -j .data -j .got -j .got.plt -j .u_boot_list -j .rel.dyn \
Alexander Graf94a10f22018-06-12 07:48:37 +0200148 -j .binman_sym_table -j .text_rest
David Feng85fd5f12013-12-14 11:47:35 +0800149endif
Masahiro Yamadad36a7492014-02-24 11:12:21 +0900150
Pantelis Antoniou76482732017-05-25 19:23:58 +0300151# if a dtb section exists we always have to include it
152# there are only two cases where it is generated
153# 1) OF_EMBEDED is turned on
154# 2) unit tests include device tree blobs
Alexey Ignatov576a8d52014-07-07 03:21:44 +0400155OBJCOPYFLAGS += -j .dtb.init.rodata
Alexey Ignatov576a8d52014-07-07 03:21:44 +0400156
Alexander Graf0bd425a2016-03-04 01:10:01 +0100157ifdef CONFIG_EFI_LOADER
158OBJCOPYFLAGS += -j .efi_runtime -j .efi_runtime_rel
159endif
160
Masahiro Yamadad36a7492014-02-24 11:12:21 +0900161ifneq ($(CONFIG_IMX_CONFIG),)
162ifdef CONFIG_SPL
163ifndef CONFIG_SPL_BUILD
Simon Glassc46090d2020-07-19 13:56:01 -0600164INPUTS-y += SPL
Masahiro Yamadad36a7492014-02-24 11:12:21 +0900165endif
166else
Stefano Babicc183a6e2014-03-31 09:50:35 +0200167ifeq ($(CONFIG_OF_SEPARATE),y)
Simon Glassc46090d2020-07-19 13:56:01 -0600168INPUTS-y += u-boot-dtb.imx
Stefano Babicc183a6e2014-03-31 09:50:35 +0200169else
Simon Glassc46090d2020-07-19 13:56:01 -0600170INPUTS-y += u-boot.imx
Masahiro Yamadad36a7492014-02-24 11:12:21 +0900171endif
172endif
Albert ARIBAUD \(3ADEV\)2e9f4942016-09-26 09:08:06 +0200173ifneq ($(CONFIG_VF610),)
Simon Glassc46090d2020-07-19 13:56:01 -0600174INPUTS-y += u-boot.vyb
Albert ARIBAUD \(3ADEV\)2e9f4942016-09-26 09:08:06 +0200175endif
Stefano Babicc183a6e2014-03-31 09:50:35 +0200176endif
Simon Glassfc03fb92016-11-07 08:47:10 -0700177
178EFI_LDS := elf_arm_efi.lds
179EFI_CRT0 := crt0_arm_efi.o
180EFI_RELOC := reloc_arm_efi.o