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Tom Rini83d290c2018-05-06 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 Denk8ae86b72011-02-04 14:25:17 +01006ifndef CONFIG_STANDALONE_LOAD_ADDR
Masahiro Yamadaa93fbf4a2017-04-25 13:10:11 +09007ifneq ($(CONFIG_ARCH_OMAP2PLUS),)
Wolfgang Denk8ae86b72011-02-04 14:25:17 +01008CONFIG_STANDALONE_LOAD_ADDR = 0x80300000
Mike Frysinger262ae0a2009-09-03 23:12:47 -04009else
Wolfgang Denk8ae86b72011-02-04 14:25:17 +010010CONFIG_STANDALONE_LOAD_ADDR = 0xc100000
Mike Frysinger262ae0a2009-09-03 23:12:47 -040011endif
12endif
13
Joel Peshkin4e9bce12021-04-11 11:21:58 +020014CFLAGS_NON_EFI := -fno-pic -ffixed-r9 -ffunction-sections -fdata-sections \
15 -fstack-protector-strong
Simon Glassdd46eef2016-11-07 08:47:10 -070016CFLAGS_EFI := -fpic -fshort-wchar
17
Marek Behún34ccadc2021-05-20 13:24:24 +020018ifneq ($(CONFIG_LTO)$(CONFIG_USE_PRIVATE_LIBGCC),yy)
Tom Rinifd725692013-04-25 07:40:22 +000019LDFLAGS_FINAL += --gc-sections
Marek Behún34ccadc2021-05-20 13:24:24 +020020endif
Marek Behún75c7d102021-05-20 13:24:23 +020021
22ifndef CONFIG_LTO
23PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections
24endif
25
26PLATFORM_RELFLAGS += -fno-common -ffixed-r9
Masahiro Yamadabf1af3d2014-01-15 11:00:45 +090027PLATFORM_RELFLAGS += $(call cc-option, -msoft-float) \
Samuel Hollandf43312c2021-08-21 19:54:02 -050028 $(call cc-option,-mgeneral-regs-only) \
Masahiro Yamadabf1af3d2014-01-15 11:00:45 +090029 $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
Tom Rinifd725692013-04-25 07:40:22 +000030
Tom Rinib745e822016-03-16 19:55:55 -040031# LLVM support
Tom Rini3b6407b2018-04-22 19:15:03 -040032LLVM_RELFLAGS := $(call cc-option,-mllvm,) \
33 $(call cc-option,-mno-movt,)
Tom Rinib745e822016-03-16 19:55:55 -040034PLATFORM_RELFLAGS += $(LLVM_RELFLAGS)
35
Masahiro Yamada90f984e2014-07-30 14:08:23 +090036PLATFORM_CPPFLAGS += -D__ARM__
Jean-Christophe PLAGNIOL-VILLARD10a451c2009-05-08 20:24:12 +020037
Álvaro Fernández Rojasd57259b2017-04-20 20:36:25 +020038ifdef CONFIG_ARM64
39PLATFORM_ELFFLAGS += -B aarch64 -O elf64-littleaarch64
40else
41PLATFORM_ELFFLAGS += -B arm -O elf32-littlearm
42endif
43
Aneesh V5356f542012-03-08 07:20:19 +000044# Choose between ARM/Thumb instruction sets
Tom Rini3a649402017-03-18 09:01:44 -040045ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
Stefan Agner75d7a0d2014-12-18 18:10:33 +010046AFLAGS_IMPLICIT_IT := $(call as-option,-Wa$(comma)-mimplicit-it=always)
47PF_CPPFLAGS_ARM := $(AFLAGS_IMPLICIT_IT) \
48 $(call cc-option, -mthumb -mthumb-interwork,\
Aneesh V5356f542012-03-08 07:20:19 +000049 $(call cc-option,-marm,)\
50 $(call cc-option,-mno-thumb-interwork,)\
51 )
52else
53PF_CPPFLAGS_ARM := $(call cc-option,-marm,) \
54 $(call cc-option,-mno-thumb-interwork,)
55endif
Wolfgang Denkf772acf2009-08-17 13:17:29 +020056
Tom Rini06a119a2012-03-16 06:34:35 +000057# Only test once
Tom Rini3a649402017-03-18 09:01:44 -040058ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
Tom Rinid2366df2017-04-17 09:18:00 -040059archprepare: checkthumb checkgcc6
Masahiro Yamada388b2e52014-03-05 17:49:22 +090060
61checkthumb:
Tom Rini6e2f1532016-01-19 20:39:02 -050062 @if test "$(call cc-name)" = "gcc" -a \
63 "$(call cc-version)" -lt "0404"; then \
Masahiro Yamada388b2e52014-03-05 17:49:22 +090064 echo -n '*** Your GCC does not produce working '; \
65 echo 'binaries in THUMB mode.'; \
66 echo '*** Your board is configured for THUMB mode.'; \
67 false; \
68 fi
Tom Rinid2366df2017-04-17 09:18:00 -040069else
70archprepare: checkgcc6
Masahiro Yamada388b2e52014-03-05 17:49:22 +090071endif
Tom Rini06a119a2012-03-16 06:34:35 +000072
Tom Rinid2366df2017-04-17 09:18:00 -040073checkgcc6:
74 @if test "$(call cc-name)" = "gcc" -a \
75 "$(call cc-version)" -lt "0600"; then \
Tom Rini6b867da2017-12-02 20:11:31 -050076 echo '*** Your GCC is older than 6.0 and is not supported'; \
77 false; \
Tom Rinid2366df2017-04-17 09:18:00 -040078 fi
79
80
Wolfgang Denkf772acf2009-08-17 13:17:29 +020081# Try if EABI is supported, else fall back to old API,
82# i. e. for example:
83# - with ELDK 4.2 (EABI supported), use:
Aneesh V5356f542012-03-08 07:20:19 +000084# -mabi=aapcs-linux
Wolfgang Denkf772acf2009-08-17 13:17:29 +020085# - with ELDK 4.1 (gcc 4.x, no EABI), use:
Aneesh V5356f542012-03-08 07:20:19 +000086# -mabi=apcs-gnu
Wolfgang Denkf772acf2009-08-17 13:17:29 +020087# - with ELDK 3.1 (gcc 3.x), use:
Aneesh V5356f542012-03-08 07:20:19 +000088# -mapcs-32
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000089PF_CPPFLAGS_ABI := $(call cc-option,\
Aneesh V5356f542012-03-08 07:20:19 +000090 -mabi=aapcs-linux,\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000091 $(call cc-option,\
92 -mapcs-32,\
Wolfgang Denkf772acf2009-08-17 13:17:29 +020093 $(call cc-option,\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000094 -mabi=apcs-gnu,\
95 )\
Aneesh V5356f542012-03-08 07:20:19 +000096 )\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000097 )
98PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI)
Wolfgang Denkf772acf2009-08-17 13:17:29 +020099
100# For EABI, make sure to provide raise()
101ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
Aneesh V52534182011-07-19 05:51:41 +0000102# This file is parsed many times, so the string may get added multiple
103# times. Also, the prefix needs to be different based on whether
104# CONFIG_SPL_BUILD is defined or not. 'filter-out' the existing entry
105# before adding the correct one.
Masahiro Yamadaa86cf892014-02-27 22:40:34 +0900106PLATFORM_LIBS := arch/arm/lib/eabi_compat.o \
107 $(filter-out arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS))
Wolfgang Denkf772acf2009-08-17 13:17:29 +0200108endif
Albert Aribaud92d5ecb2010-10-11 13:13:28 +0200109
Albert Aribaud92d5ecb2010-10-11 13:13:28 +0200110# needed for relocation
Stefano Babica4594e42011-01-27 06:03:49 +0000111LDFLAGS_u-boot += -pie
Allen Martin0f20bb62012-07-18 13:45:53 +0000112
113#
114# FIXME: binutils versions < 2.22 have a bug in the assembler where
115# branches to weak symbols can be incorrectly optimized in thumb mode
116# to a short branch (b.n instruction) that won't reach when the symbol
117# gets preempted
118#
119# http://sourceware.org/bugzilla/show_bug.cgi?id=12532
120#
Tom Rini3a649402017-03-18 09:01:44 -0400121ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
Allen Martin0f20bb62012-07-18 13:45:53 +0000122ifeq ($(GAS_BUG_12532),)
123export GAS_BUG_12532:=$(shell if [ $(call binutils-version) -lt 0222 ] ; \
124 then echo y; else echo n; fi)
125endif
126ifeq ($(GAS_BUG_12532),y)
127PLATFORM_RELFLAGS += -fno-optimize-sibling-calls
128endif
129endif
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200130
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200131ifneq ($(CONFIG_SPL_BUILD),y)
Jeroen Hofstee373d7982013-08-24 13:55:38 +0200132# Check that only R_ARM_RELATIVE relocations are generated.
Simon Glasse6385c72020-07-19 13:56:01 -0600133INPUTS-y += checkarmreloc
Jeroen Hofstee373d7982013-08-24 13:55:38 +0200134# The movt / movw can hardcode 16 bit parts of the addresses in the
135# instruction. Relocation is not supported for that case, so disable
136# such usage by requiring word relocations.
137PLATFORM_CPPFLAGS += $(call cc-option, -mword-relocations)
Peng Fan397d7d52016-01-30 12:10:49 +0800138PLATFORM_CPPFLAGS += $(call cc-option, -fno-pic)
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200139endif
Albert ARIBAUD47ed5dd2013-11-07 14:21:46 +0100140
141# limit ourselves to the sections we want in the .bin.
David Feng0ae76532013-12-14 11:47:35 +0800142ifdef CONFIG_ARM64
macro.wave.z@gmail.comdf88cb32016-12-08 11:58:22 +0800143OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .data \
Simon Glasscf2a8fd2017-11-13 18:55:02 -0700144 -j .u_boot_list -j .rela.dyn -j .got -j .got.plt \
Alexander Graf7e21fbc2018-06-12 07:48:37 +0200145 -j .binman_sym_table -j .text_rest
David Feng0ae76532013-12-14 11:47:35 +0800146else
Chen-Yu Tsaia5aa7ff2016-07-05 21:45:06 +0800147OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .hash \
Simon Glasscf2a8fd2017-11-13 18:55:02 -0700148 -j .data -j .got -j .got.plt -j .u_boot_list -j .rel.dyn \
Alexander Graf7e21fbc2018-06-12 07:48:37 +0200149 -j .binman_sym_table -j .text_rest
David Feng0ae76532013-12-14 11:47:35 +0800150endif
Masahiro Yamada630d2342014-02-24 11:12:21 +0900151
Pantelis Antoniou54cc4dc2017-05-25 19:23:58 +0300152# if a dtb section exists we always have to include it
153# there are only two cases where it is generated
154# 1) OF_EMBEDED is turned on
155# 2) unit tests include device tree blobs
Alexey Ignatov072b2d82014-07-07 03:21:44 +0400156OBJCOPYFLAGS += -j .dtb.init.rodata
Alexey Ignatov072b2d82014-07-07 03:21:44 +0400157
Alexander Graf50149ea2016-03-04 01:10:01 +0100158ifdef CONFIG_EFI_LOADER
159OBJCOPYFLAGS += -j .efi_runtime -j .efi_runtime_rel
160endif
161
Tom Rini148b8bb2021-08-24 20:41:00 -0400162ifdef CONFIG_MACH_IMX
163ifneq ($(CONFIG_IMX_CONFIG),"")
Masahiro Yamada630d2342014-02-24 11:12:21 +0900164ifdef CONFIG_SPL
165ifndef CONFIG_SPL_BUILD
Simon Glasse6385c72020-07-19 13:56:01 -0600166INPUTS-y += SPL
Masahiro Yamada630d2342014-02-24 11:12:21 +0900167endif
168else
Stefano Babice64348f2014-03-31 09:50:35 +0200169ifeq ($(CONFIG_OF_SEPARATE),y)
Simon Glasse6385c72020-07-19 13:56:01 -0600170INPUTS-y += u-boot-dtb.imx
Stefano Babice64348f2014-03-31 09:50:35 +0200171else
Simon Glasse6385c72020-07-19 13:56:01 -0600172INPUTS-y += u-boot.imx
Masahiro Yamada630d2342014-02-24 11:12:21 +0900173endif
174endif
Albert ARIBAUD \(3ADEV\)ed0c2c02016-09-26 09:08:06 +0200175ifneq ($(CONFIG_VF610),)
Simon Glasse6385c72020-07-19 13:56:01 -0600176INPUTS-y += u-boot.vyb
Albert ARIBAUD \(3ADEV\)ed0c2c02016-09-26 09:08:06 +0200177endif
Stefano Babice64348f2014-03-31 09:50:35 +0200178endif
Tom Rini148b8bb2021-08-24 20:41:00 -0400179endif
Simon Glassdd46eef2016-11-07 08:47:10 -0700180
181EFI_LDS := elf_arm_efi.lds
182EFI_CRT0 := crt0_arm_efi.o
183EFI_RELOC := reloc_arm_efi.o