2 # (C) Copyright 2000-2002
3 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 # SPDX-License-Identifier: GPL-2.0+
8 ifndef CONFIG_STANDALONE_LOAD_ADDR
9 ifneq ($(CONFIG_ARCH_OMAP2PLUS),)
10 CONFIG_STANDALONE_LOAD_ADDR = 0x80300000
12 CONFIG_STANDALONE_LOAD_ADDR = 0xc100000
16 CFLAGS_NON_EFI := -fno-pic -ffixed-r9 -ffunction-sections -fdata-sections
17 CFLAGS_EFI := -fpic -fshort-wchar
19 LDFLAGS_FINAL += --gc-sections
20 PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections \
21 -fno-common -ffixed-r9
22 PLATFORM_RELFLAGS += $(call cc-option, -msoft-float) \
23 $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
26 LLVMS_RELFLAGS := $(call cc-option,-mllvm,) \
27 $(call cc-option,-target arm-none-eabi,) \
28 $(call cc-option,-arm-use-movt=0,)
29 PLATFORM_RELFLAGS += $(LLVM_RELFLAGS)
31 PLATFORM_CPPFLAGS += -D__ARM__
34 PLATFORM_ELFFLAGS += -B aarch64 -O elf64-littleaarch64
36 PLATFORM_ELFFLAGS += -B arm -O elf32-littlearm
39 # Choose between ARM/Thumb instruction sets
40 ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
41 AFLAGS_IMPLICIT_IT := $(call as-option,-Wa$(comma)-mimplicit-it=always)
42 PF_CPPFLAGS_ARM := $(AFLAGS_IMPLICIT_IT) \
43 $(call cc-option, -mthumb -mthumb-interwork,\
44 $(call cc-option,-marm,)\
45 $(call cc-option,-mno-thumb-interwork,)\
48 PF_CPPFLAGS_ARM := $(call cc-option,-marm,) \
49 $(call cc-option,-mno-thumb-interwork,)
53 ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
54 archprepare: checkthumb checkgcc6
57 @if test "$(call cc-name)" = "gcc" -a \
58 "$(call cc-version)" -lt "0404"; then \
59 echo -n '*** Your GCC does not produce working '; \
60 echo 'binaries in THUMB mode.'; \
61 echo '*** Your board is configured for THUMB mode.'; \
65 archprepare: checkgcc6
69 @if test "$(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.'; \
76 # Try if EABI is supported, else fall back to old API,
78 # - with ELDK 4.2 (EABI supported), use:
80 # - with ELDK 4.1 (gcc 4.x, no EABI), use:
82 # - with ELDK 3.1 (gcc 3.x), use:
84 PF_CPPFLAGS_ABI := $(call cc-option,\
93 PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI)
95 # For EABI, make sure to provide raise()
96 ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
97 # 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.
101 PLATFORM_LIBS := arch/arm/lib/eabi_compat.o \
102 $(filter-out arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS))
105 # needed for relocation
106 LDFLAGS_u-boot += -pie
109 # FIXME: binutils versions < 2.22 have a bug in the assembler where
110 # branches to weak symbols can be incorrectly optimized in thumb mode
111 # to a short branch (b.n instruction) that won't reach when the symbol
114 # http://sourceware.org/bugzilla/show_bug.cgi?id=12532
116 ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
117 ifeq ($(GAS_BUG_12532),)
118 export GAS_BUG_12532:=$(shell if [ $(call binutils-version) -lt 0222 ] ; \
119 then echo y; else echo n; fi)
121 ifeq ($(GAS_BUG_12532),y)
122 PLATFORM_RELFLAGS += -fno-optimize-sibling-calls
126 ifneq ($(CONFIG_SPL_BUILD),y)
127 # Check that only R_ARM_RELATIVE relocations are generated.
128 ALL-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.
132 PLATFORM_CPPFLAGS += $(call cc-option, -mword-relocations)
133 PLATFORM_CPPFLAGS += $(call cc-option, -fno-pic)
136 # limit ourselves to the sections we want in the .bin.
138 OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .data \
139 -j .u_boot_list -j .rela.dyn -j .got -j .got.plt
141 OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .hash \
142 -j .data -j .got -j .got.plt -j .u_boot_list -j .rel.dyn
145 # if a dtb section exists we always have to include it
146 # there are only two cases where it is generated
147 # 1) OF_EMBEDED is turned on
148 # 2) unit tests include device tree blobs
149 OBJCOPYFLAGS += -j .dtb.init.rodata
151 ifdef CONFIG_EFI_LOADER
152 OBJCOPYFLAGS += -j .efi_runtime -j .efi_runtime_rel
155 ifneq ($(CONFIG_IMX_CONFIG),)
157 ifndef CONFIG_SPL_BUILD
161 ifeq ($(CONFIG_OF_SEPARATE),y)
162 ALL-y += u-boot-dtb.imx
167 ifneq ($(CONFIG_VF610),)
172 EFI_LDS := elf_arm_efi.lds
173 EFI_CRT0 := crt0_arm_efi.o
174 EFI_RELOC := reloc_arm_efi.o