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 += $(LLVM_RELFLAGS)
31 PLATFORM_CPPFLAGS += -D__ARM__
33 # Choose between ARM/Thumb instruction sets
34 ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
35 AFLAGS_IMPLICIT_IT := $(call as-option,-Wa$(comma)-mimplicit-it=always)
36 PF_CPPFLAGS_ARM := $(AFLAGS_IMPLICIT_IT) \
37 $(call cc-option, -mthumb -mthumb-interwork,\
38 $(call cc-option,-marm,)\
39 $(call cc-option,-mno-thumb-interwork,)\
42 PF_CPPFLAGS_ARM := $(call cc-option,-marm,) \
43 $(call cc-option,-mno-thumb-interwork,)
47 ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
48 archprepare: checkthumb checkgcc6
51 @if test "$(call cc-name)" = "gcc" -a \
52 "$(call cc-version)" -lt "0404"; then \
53 echo -n '*** Your GCC does not produce working '; \
54 echo 'binaries in THUMB mode.'; \
55 echo '*** Your board is configured for THUMB mode.'; \
59 archprepare: checkgcc6
63 @if test "$(call cc-name)" = "gcc" -a \
64 "$(call cc-version)" -lt "0600"; then \
65 echo -n '*** Your GCC is older than 6.0 and will not be '; \
66 echo 'supported starting in v2018.01.'; \
70 # Try if EABI is supported, else fall back to old API,
72 # - with ELDK 4.2 (EABI supported), use:
74 # - with ELDK 4.1 (gcc 4.x, no EABI), use:
76 # - with ELDK 3.1 (gcc 3.x), use:
78 PF_CPPFLAGS_ABI := $(call cc-option,\
87 PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI)
89 # For EABI, make sure to provide raise()
90 ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
91 # This file is parsed many times, so the string may get added multiple
92 # times. Also, the prefix needs to be different based on whether
93 # CONFIG_SPL_BUILD is defined or not. 'filter-out' the existing entry
94 # before adding the correct one.
95 PLATFORM_LIBS := arch/arm/lib/eabi_compat.o \
96 $(filter-out arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS))
99 # needed for relocation
100 LDFLAGS_u-boot += -pie
103 # FIXME: binutils versions < 2.22 have a bug in the assembler where
104 # branches to weak symbols can be incorrectly optimized in thumb mode
105 # to a short branch (b.n instruction) that won't reach when the symbol
108 # http://sourceware.org/bugzilla/show_bug.cgi?id=12532
110 ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
111 ifeq ($(GAS_BUG_12532),)
112 export GAS_BUG_12532:=$(shell if [ $(call binutils-version) -lt 0222 ] ; \
113 then echo y; else echo n; fi)
115 ifeq ($(GAS_BUG_12532),y)
116 PLATFORM_RELFLAGS += -fno-optimize-sibling-calls
120 ifneq ($(CONFIG_SPL_BUILD),y)
121 # Check that only R_ARM_RELATIVE relocations are generated.
122 ALL-y += checkarmreloc
123 # The movt / movw can hardcode 16 bit parts of the addresses in the
124 # instruction. Relocation is not supported for that case, so disable
125 # such usage by requiring word relocations.
126 PLATFORM_CPPFLAGS += $(call cc-option, -mword-relocations)
127 PLATFORM_CPPFLAGS += $(call cc-option, -fno-pic)
130 # limit ourselves to the sections we want in the .bin.
132 OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .data \
133 -j .u_boot_list -j .rela.dyn -j .got -j .got.plt
135 OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .hash \
136 -j .data -j .got -j .got.plt -j .u_boot_list -j .rel.dyn
139 ifdef CONFIG_OF_EMBED
140 OBJCOPYFLAGS += -j .dtb.init.rodata
143 ifdef CONFIG_EFI_LOADER
144 OBJCOPYFLAGS += -j .efi_runtime -j .efi_runtime_rel
147 ifneq ($(CONFIG_IMX_CONFIG),)
149 ifndef CONFIG_SPL_BUILD
153 ifeq ($(CONFIG_OF_SEPARATE),y)
154 ALL-y += u-boot-dtb.imx
159 ifneq ($(CONFIG_VF610),)
164 EFI_LDS := elf_arm_efi.lds
165 EFI_CRT0 := crt0_arm_efi.o
166 EFI_RELOC := reloc_arm_efi.o