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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
Masahiro Yamadaa93fbf4a2017-04-25 13:10:11 +09009ifneq ($(CONFIG_ARCH_OMAP2PLUS),)
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 += $(LLVM_RELFLAGS)
30
Masahiro Yamada90f984e2014-07-30 14:08:23 +090031PLATFORM_CPPFLAGS += -D__ARM__
Jean-Christophe PLAGNIOL-VILLARD10a451c2009-05-08 20:24:12 +020032
Álvaro Fernández Rojasd57259b2017-04-20 20:36:25 +020033ifdef CONFIG_ARM64
34PLATFORM_ELFFLAGS += -B aarch64 -O elf64-littleaarch64
35else
36PLATFORM_ELFFLAGS += -B arm -O elf32-littlearm
37endif
38
Aneesh V5356f542012-03-08 07:20:19 +000039# Choose between ARM/Thumb instruction sets
Tom Rini3a649402017-03-18 09:01:44 -040040ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
Stefan Agner75d7a0d2014-12-18 18:10:33 +010041AFLAGS_IMPLICIT_IT := $(call as-option,-Wa$(comma)-mimplicit-it=always)
42PF_CPPFLAGS_ARM := $(AFLAGS_IMPLICIT_IT) \
43 $(call cc-option, -mthumb -mthumb-interwork,\
Aneesh V5356f542012-03-08 07:20:19 +000044 $(call cc-option,-marm,)\
45 $(call cc-option,-mno-thumb-interwork,)\
46 )
47else
48PF_CPPFLAGS_ARM := $(call cc-option,-marm,) \
49 $(call cc-option,-mno-thumb-interwork,)
50endif
Wolfgang Denkf772acf2009-08-17 13:17:29 +020051
Tom Rini06a119a2012-03-16 06:34:35 +000052# Only test once
Tom Rini3a649402017-03-18 09:01:44 -040053ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
Tom Rinid2366df2017-04-17 09:18:00 -040054archprepare: checkthumb checkgcc6
Masahiro Yamada388b2e52014-03-05 17:49:22 +090055
56checkthumb:
Tom Rini6e2f1532016-01-19 20:39:02 -050057 @if test "$(call cc-name)" = "gcc" -a \
58 "$(call cc-version)" -lt "0404"; then \
Masahiro Yamada388b2e52014-03-05 17:49:22 +090059 echo -n '*** Your GCC does not produce working '; \
60 echo 'binaries in THUMB mode.'; \
61 echo '*** Your board is configured for THUMB mode.'; \
62 false; \
63 fi
Tom Rinid2366df2017-04-17 09:18:00 -040064else
65archprepare: checkgcc6
Masahiro Yamada388b2e52014-03-05 17:49:22 +090066endif
Tom Rini06a119a2012-03-16 06:34:35 +000067
Tom Rinid2366df2017-04-17 09:18:00 -040068checkgcc6:
69 @if test "$(call cc-name)" = "gcc" -a \
70 "$(call cc-version)" -lt "0600"; then \
71 echo -n '*** Your GCC is older than 6.0 and will not be '; \
72 echo 'supported starting in v2018.01.'; \
73 fi
74
75
Wolfgang Denkf772acf2009-08-17 13:17:29 +020076# Try if EABI is supported, else fall back to old API,
77# i. e. for example:
78# - with ELDK 4.2 (EABI supported), use:
Aneesh V5356f542012-03-08 07:20:19 +000079# -mabi=aapcs-linux
Wolfgang Denkf772acf2009-08-17 13:17:29 +020080# - with ELDK 4.1 (gcc 4.x, no EABI), use:
Aneesh V5356f542012-03-08 07:20:19 +000081# -mabi=apcs-gnu
Wolfgang Denkf772acf2009-08-17 13:17:29 +020082# - with ELDK 3.1 (gcc 3.x), use:
Aneesh V5356f542012-03-08 07:20:19 +000083# -mapcs-32
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000084PF_CPPFLAGS_ABI := $(call cc-option,\
Aneesh V5356f542012-03-08 07:20:19 +000085 -mabi=aapcs-linux,\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000086 $(call cc-option,\
87 -mapcs-32,\
Wolfgang Denkf772acf2009-08-17 13:17:29 +020088 $(call cc-option,\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000089 -mabi=apcs-gnu,\
90 )\
Aneesh V5356f542012-03-08 07:20:19 +000091 )\
Wolfgang Denkcca4e4a2011-11-01 20:54:02 +000092 )
93PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI)
Wolfgang Denkf772acf2009-08-17 13:17:29 +020094
95# For EABI, make sure to provide raise()
96ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
Aneesh V52534182011-07-19 05:51:41 +000097# This file is parsed many times, so the string may get added multiple
98# times. Also, the prefix needs to be different based on whether
99# CONFIG_SPL_BUILD is defined or not. 'filter-out' the existing entry
100# before adding the correct one.
Masahiro Yamadaa86cf892014-02-27 22:40:34 +0900101PLATFORM_LIBS := arch/arm/lib/eabi_compat.o \
102 $(filter-out arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS))
Wolfgang Denkf772acf2009-08-17 13:17:29 +0200103endif
Albert Aribaud92d5ecb2010-10-11 13:13:28 +0200104
Albert Aribaud92d5ecb2010-10-11 13:13:28 +0200105# needed for relocation
Stefano Babica4594e42011-01-27 06:03:49 +0000106LDFLAGS_u-boot += -pie
Allen Martin0f20bb62012-07-18 13:45:53 +0000107
108#
109# FIXME: binutils versions < 2.22 have a bug in the assembler where
110# branches to weak symbols can be incorrectly optimized in thumb mode
111# to a short branch (b.n instruction) that won't reach when the symbol
112# gets preempted
113#
114# http://sourceware.org/bugzilla/show_bug.cgi?id=12532
115#
Tom Rini3a649402017-03-18 09:01:44 -0400116ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
Allen Martin0f20bb62012-07-18 13:45:53 +0000117ifeq ($(GAS_BUG_12532),)
118export GAS_BUG_12532:=$(shell if [ $(call binutils-version) -lt 0222 ] ; \
119 then echo y; else echo n; fi)
120endif
121ifeq ($(GAS_BUG_12532),y)
122PLATFORM_RELFLAGS += -fno-optimize-sibling-calls
123endif
124endif
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200125
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200126ifneq ($(CONFIG_SPL_BUILD),y)
Jeroen Hofstee373d7982013-08-24 13:55:38 +0200127# Check that only R_ARM_RELATIVE relocations are generated.
128ALL-y += checkarmreloc
129# The movt / movw can hardcode 16 bit parts of the addresses in the
130# instruction. Relocation is not supported for that case, so disable
131# such usage by requiring word relocations.
132PLATFORM_CPPFLAGS += $(call cc-option, -mword-relocations)
Peng Fan397d7d52016-01-30 12:10:49 +0800133PLATFORM_CPPFLAGS += $(call cc-option, -fno-pic)
Albert ARIBAUDc37980c2013-06-11 14:17:30 +0200134endif
Albert ARIBAUD47ed5dd2013-11-07 14:21:46 +0100135
136# limit ourselves to the sections we want in the .bin.
David Feng0ae76532013-12-14 11:47:35 +0800137ifdef CONFIG_ARM64
macro.wave.z@gmail.comdf88cb32016-12-08 11:58:22 +0800138OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .data \
Philipp Tomsich4b0d5062017-03-24 19:08:55 +0100139 -j .u_boot_list -j .rela.dyn -j .got -j .got.plt
David Feng0ae76532013-12-14 11:47:35 +0800140else
Chen-Yu Tsaia5aa7ff2016-07-05 21:45:06 +0800141OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .hash \
142 -j .data -j .got -j .got.plt -j .u_boot_list -j .rel.dyn
David Feng0ae76532013-12-14 11:47:35 +0800143endif
Masahiro Yamada630d2342014-02-24 11:12:21 +0900144
Pantelis Antoniou54cc4dc2017-05-25 19:23:58 +0300145# if a dtb section exists we always have to include it
146# there are only two cases where it is generated
147# 1) OF_EMBEDED is turned on
148# 2) unit tests include device tree blobs
Alexey Ignatov072b2d82014-07-07 03:21:44 +0400149OBJCOPYFLAGS += -j .dtb.init.rodata
Alexey Ignatov072b2d82014-07-07 03:21:44 +0400150
Alexander Graf50149ea2016-03-04 01:10:01 +0100151ifdef CONFIG_EFI_LOADER
152OBJCOPYFLAGS += -j .efi_runtime -j .efi_runtime_rel
153endif
154
Masahiro Yamada630d2342014-02-24 11:12:21 +0900155ifneq ($(CONFIG_IMX_CONFIG),)
156ifdef CONFIG_SPL
157ifndef CONFIG_SPL_BUILD
158ALL-y += SPL
159endif
160else
Stefano Babice64348f2014-03-31 09:50:35 +0200161ifeq ($(CONFIG_OF_SEPARATE),y)
162ALL-y += u-boot-dtb.imx
163else
Masahiro Yamada630d2342014-02-24 11:12:21 +0900164ALL-y += u-boot.imx
165endif
166endif
Albert ARIBAUD \(3ADEV\)ed0c2c02016-09-26 09:08:06 +0200167ifneq ($(CONFIG_VF610),)
168ALL-y += u-boot.vyb
169endif
Stefano Babice64348f2014-03-31 09:50:35 +0200170endif
Simon Glassdd46eef2016-11-07 08:47:10 -0700171
172EFI_LDS := elf_arm_efi.lds
173EFI_CRT0 := crt0_arm_efi.o
174EFI_RELOC := reloc_arm_efi.o