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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
Joel Peshkin4e9bce12021-04-11 11:21:58 +02006CFLAGS_NON_EFI := -fno-pic -ffixed-r9 -ffunction-sections -fdata-sections \
7 -fstack-protector-strong
Simon Glassdd46eef2016-11-07 08:47:10 -07008CFLAGS_EFI := -fpic -fshort-wchar
9
Simon Glassa55014d2022-08-03 12:13:08 -060010ifneq ($(LTO_ENABLE)$(CONFIG_USE_PRIVATE_LIBGCC),yy)
Tom Rinifd725692013-04-25 07:40:22 +000011LDFLAGS_FINAL += --gc-sections
Marek Behún34ccadc2021-05-20 13:24:24 +020012endif
Marek Behún75c7d102021-05-20 13:24:23 +020013
Simon Glassa55014d2022-08-03 12:13:08 -060014ifneq ($(LTO_ENABLE),y)
Marek Behún75c7d102021-05-20 13:24:23 +020015PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections
16endif
17
18PLATFORM_RELFLAGS += -fno-common -ffixed-r9
Masahiro Yamadabf1af3d2014-01-15 11:00:45 +090019PLATFORM_RELFLAGS += $(call cc-option, -msoft-float) \
Samuel Hollandf43312c2021-08-21 19:54:02 -050020 $(call cc-option,-mgeneral-regs-only) \
Masahiro Yamadabf1af3d2014-01-15 11:00:45 +090021 $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
Tom Rinifd725692013-04-25 07:40:22 +000022
Tom Rinib745e822016-03-16 19:55:55 -040023# LLVM support
Tom Rini3b6407b2018-04-22 19:15:03 -040024LLVM_RELFLAGS := $(call cc-option,-mllvm,) \
25 $(call cc-option,-mno-movt,)
Tom Rinib745e822016-03-16 19:55:55 -040026PLATFORM_RELFLAGS += $(LLVM_RELFLAGS)
27
Masahiro Yamada90f984e2014-07-30 14:08:23 +090028PLATFORM_CPPFLAGS += -D__ARM__
Jean-Christophe PLAGNIOL-VILLARD10a451c2009-05-08 20:24:12 +020029
Álvaro Fernández Rojasd57259b2017-04-20 20:36:25 +020030ifdef CONFIG_ARM64
31PLATFORM_ELFFLAGS += -B aarch64 -O elf64-littleaarch64
32else
33PLATFORM_ELFFLAGS += -B arm -O elf32-littlearm
34endif
35
Aneesh V5356f542012-03-08 07:20:19 +000036# Choose between ARM/Thumb instruction sets
Tom Rini3a649402017-03-18 09:01:44 -040037ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
Stefan Agner75d7a0d2014-12-18 18:10:33 +010038AFLAGS_IMPLICIT_IT := $(call as-option,-Wa$(comma)-mimplicit-it=always)
39PF_CPPFLAGS_ARM := $(AFLAGS_IMPLICIT_IT) \
40 $(call cc-option, -mthumb -mthumb-interwork,\
Aneesh V5356f542012-03-08 07:20:19 +000041 $(call cc-option,-marm,)\
42 $(call cc-option,-mno-thumb-interwork,)\
43 )
44else
45PF_CPPFLAGS_ARM := $(call cc-option,-marm,) \
46 $(call cc-option,-mno-thumb-interwork,)
47endif
Wolfgang Denkf772acf2009-08-17 13:17:29 +020048
Tom Rini06a119a2012-03-16 06:34:35 +000049# Only test once
Tom Rini3a649402017-03-18 09:01:44 -040050ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
Tom Rinid2366df2017-04-17 09:18:00 -040051archprepare: checkthumb checkgcc6
Masahiro Yamada388b2e52014-03-05 17:49:22 +090052
53checkthumb:
Tom Rini6e2f1532016-01-19 20:39:02 -050054 @if test "$(call cc-name)" = "gcc" -a \
55 "$(call cc-version)" -lt "0404"; then \
Masahiro Yamada388b2e52014-03-05 17:49:22 +090056 echo -n '*** Your GCC does not produce working '; \
57 echo 'binaries in THUMB mode.'; \
58 echo '*** Your board is configured for THUMB mode.'; \
59 false; \
60 fi
Tom Rinid2366df2017-04-17 09:18:00 -040061else
62archprepare: checkgcc6
Masahiro Yamada388b2e52014-03-05 17:49:22 +090063endif
Tom Rini06a119a2012-03-16 06:34:35 +000064
Tom Rinid2366df2017-04-17 09:18:00 -040065checkgcc6:
66 @if test "$(call cc-name)" = "gcc" -a \
67 "$(call cc-version)" -lt "0600"; then \
Tom Rini6b867da2017-12-02 20:11:31 -050068 echo '*** Your GCC is older than 6.0 and is not supported'; \
69 false; \
Tom Rinid2366df2017-04-17 09:18:00 -040070 fi
71
72
Wolfgang Denkf772acf2009-08-17 13:17:29 +020073# Try if EABI is supported, else fall back to old API,
74# i. e. for example:
75# - with ELDK 4.2 (EABI supported), use:
Aneesh V5356f542012-03-08 07:20:19 +000076# -mabi=aapcs-linux
Wolfgang Denkf772acf2009-08-17 13:17:29 +020077# - with ELDK 4.1 (gcc 4.x, no EABI), use:
Aneesh V5356f542012-03-08 07:20:19 +000078# -mabi=apcs-gnu
Wolfgang Denkf772acf2009-08-17 13:17:29 +020079# - with ELDK 3.1 (gcc 3.x), use:
Aneesh V5356f542012-03-08 07:20:19 +000080# -mapcs-32
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000081PF_CPPFLAGS_ABI := $(call cc-option,\
Aneesh V5356f542012-03-08 07:20:19 +000082 -mabi=aapcs-linux,\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000083 $(call cc-option,\
84 -mapcs-32,\
Wolfgang Denkf772acf2009-08-17 13:17:29 +020085 $(call cc-option,\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000086 -mabi=apcs-gnu,\
87 )\
Aneesh V5356f542012-03-08 07:20:19 +000088 )\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000089 )
90PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI)
Wolfgang Denkf772acf2009-08-17 13:17:29 +020091
92# For EABI, make sure to provide raise()
93ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
Aneesh V52534182011-07-19 05:51:41 +000094# This file is parsed many times, so the string may get added multiple
95# times. Also, the prefix needs to be different based on whether
96# CONFIG_SPL_BUILD is defined or not. 'filter-out' the existing entry
97# before adding the correct one.
Masahiro Yamadaa86cf892014-02-27 22:40:34 +090098PLATFORM_LIBS := arch/arm/lib/eabi_compat.o \
99 $(filter-out arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS))
Wolfgang Denkf772acf2009-08-17 13:17:29 +0200100endif
Albert Aribaud92d5ecb2010-10-11 13:13:28 +0200101
Albert Aribaud92d5ecb2010-10-11 13:13:28 +0200102# needed for relocation
Stefano Babica4594e42011-01-27 06:03:49 +0000103LDFLAGS_u-boot += -pie
Allen Martin0f20bb62012-07-18 13:45:53 +0000104
105#
106# FIXME: binutils versions < 2.22 have a bug in the assembler where
107# branches to weak symbols can be incorrectly optimized in thumb mode
108# to a short branch (b.n instruction) that won't reach when the symbol
109# gets preempted
110#
111# http://sourceware.org/bugzilla/show_bug.cgi?id=12532
112#
Tom Rini3a649402017-03-18 09:01:44 -0400113ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
Allen Martin0f20bb62012-07-18 13:45:53 +0000114ifeq ($(GAS_BUG_12532),)
115export GAS_BUG_12532:=$(shell if [ $(call binutils-version) -lt 0222 ] ; \
116 then echo y; else echo n; fi)
117endif
118ifeq ($(GAS_BUG_12532),y)
119PLATFORM_RELFLAGS += -fno-optimize-sibling-calls
120endif
121endif
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200122
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200123ifneq ($(CONFIG_SPL_BUILD),y)
Jeroen Hofstee373d7982013-08-24 13:55:38 +0200124# Check that only R_ARM_RELATIVE relocations are generated.
Simon Glasse6385c72020-07-19 13:56:01 -0600125INPUTS-y += checkarmreloc
Jeroen Hofstee373d7982013-08-24 13:55:38 +0200126# The movt / movw can hardcode 16 bit parts of the addresses in the
127# instruction. Relocation is not supported for that case, so disable
128# such usage by requiring word relocations.
129PLATFORM_CPPFLAGS += $(call cc-option, -mword-relocations)
Peng Fan397d7d52016-01-30 12:10:49 +0800130PLATFORM_CPPFLAGS += $(call cc-option, -fno-pic)
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200131endif
Albert ARIBAUD47ed5dd2013-11-07 14:21:46 +0100132
133# limit ourselves to the sections we want in the .bin.
David Feng0ae76532013-12-14 11:47:35 +0800134ifdef CONFIG_ARM64
macro.wave.z@gmail.comdf88cb32016-12-08 11:58:22 +0800135OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .data \
Andrew Scull99e2fbc2022-05-30 10:00:04 +0000136 -j __u_boot_list -j .rela.dyn -j .got -j .got.plt \
Alexander Graf7e21fbc2018-06-12 07:48:37 +0200137 -j .binman_sym_table -j .text_rest
David Feng0ae76532013-12-14 11:47:35 +0800138else
Chen-Yu Tsaia5aa7ff2016-07-05 21:45:06 +0800139OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .hash \
Andrew Scull99e2fbc2022-05-30 10:00:04 +0000140 -j .data -j .got -j .got.plt -j __u_boot_list -j .rel.dyn \
Alexander Graf7e21fbc2018-06-12 07:48:37 +0200141 -j .binman_sym_table -j .text_rest
David Feng0ae76532013-12-14 11:47:35 +0800142endif
Masahiro Yamada630d2342014-02-24 11:12:21 +0900143
Pantelis Antoniou54cc4dc2017-05-25 19:23:58 +0300144# if a dtb section exists we always have to include it
145# there are only two cases where it is generated
146# 1) OF_EMBEDED is turned on
147# 2) unit tests include device tree blobs
Alexey Ignatov072b2d82014-07-07 03:21:44 +0400148OBJCOPYFLAGS += -j .dtb.init.rodata
Alexey Ignatov072b2d82014-07-07 03:21:44 +0400149
Alexander Graf50149ea2016-03-04 01:10:01 +0100150ifdef CONFIG_EFI_LOADER
151OBJCOPYFLAGS += -j .efi_runtime -j .efi_runtime_rel
152endif
153
Tom Rini148b8bb2021-08-24 20:41:00 -0400154ifdef CONFIG_MACH_IMX
155ifneq ($(CONFIG_IMX_CONFIG),"")
Masahiro Yamada630d2342014-02-24 11:12:21 +0900156ifdef CONFIG_SPL
157ifndef CONFIG_SPL_BUILD
Simon Glasse6385c72020-07-19 13:56:01 -0600158INPUTS-y += SPL
Masahiro Yamada630d2342014-02-24 11:12:21 +0900159endif
160else
Stefano Babice64348f2014-03-31 09:50:35 +0200161ifeq ($(CONFIG_OF_SEPARATE),y)
Simon Glasse6385c72020-07-19 13:56:01 -0600162INPUTS-y += u-boot-dtb.imx
Stefano Babice64348f2014-03-31 09:50:35 +0200163else
Simon Glasse6385c72020-07-19 13:56:01 -0600164INPUTS-y += u-boot.imx
Masahiro Yamada630d2342014-02-24 11:12:21 +0900165endif
166endif
Albert ARIBAUD \(3ADEV\)ed0c2c02016-09-26 09:08:06 +0200167ifneq ($(CONFIG_VF610),)
Simon Glasse6385c72020-07-19 13:56:01 -0600168INPUTS-y += u-boot.vyb
Albert ARIBAUD \(3ADEV\)ed0c2c02016-09-26 09:08:06 +0200169endif
Stefano Babice64348f2014-03-31 09:50:35 +0200170endif
Tom Rini148b8bb2021-08-24 20:41:00 -0400171endif
Simon Glassdd46eef2016-11-07 08:47:10 -0700172
173EFI_LDS := elf_arm_efi.lds
174EFI_CRT0 := crt0_arm_efi.o
175EFI_RELOC := reloc_arm_efi.o