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
'*** Your GCC is older than 6.0 and is not supported'; \
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
+= $(call cc-option
, -fno-pic
)
136 # limit ourselves to the sections we want in the .bin.
138 OBJCOPYFLAGS
+= -j .text
-j .secure_text
-j .secure_data
-j .rodata
-j .data \
139 -j .u_boot_list
-j .rela.dyn
-j .got
-j .got.plt \
142 OBJCOPYFLAGS
+= -j .text
-j .secure_text
-j .secure_data
-j .rodata
-j .hash \
143 -j .data
-j .got
-j .got.plt
-j .u_boot_list
-j .rel.dyn \
147 # if a dtb section exists we always have to include it
148 # there are only two cases where it is generated
149 # 1) OF_EMBEDED is turned on
150 # 2) unit tests include device tree blobs
151 OBJCOPYFLAGS
+= -j .dtb.init.rodata
153 ifdef CONFIG_EFI_LOADER
154 OBJCOPYFLAGS
+= -j .efi_runtime
-j .efi_runtime_rel
157 ifneq ($(CONFIG_IMX_CONFIG
),)
159 ifndef CONFIG_SPL_BUILD
163 ifeq ($(CONFIG_OF_SEPARATE
),y
)
164 ALL-y
+= u-boot-dtb.imx
169 ifneq ($(CONFIG_VF610
),)
174 EFI_LDS
:= elf_arm_efi.lds
175 EFI_CRT0
:= crt0_arm_efi.o
176 EFI_RELOC
:= reloc_arm_efi.o