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_OMAP_COMMON
),)
10 CONFIG_STANDALONE_LOAD_ADDR
= 0x80300000
12 CONFIG_STANDALONE_LOAD_ADDR
= 0xc100000
16 LDFLAGS_FINAL
+= --gc-sections
17 PLATFORM_RELFLAGS
+= -ffunction-sections
-fdata-sections \
18 -fno-common
-ffixed-r9
19 PLATFORM_RELFLAGS
+= $(call cc-option
, -msoft-float
) \
20 $(call cc-option
,-mshort-load-bytes
,$(call cc-option
,-malignment-traps
,))
22 PLATFORM_CPPFLAGS
+= -D__ARM__
24 # Choose between ARM/Thumb instruction sets
25 ifeq ($(CONFIG_SYS_THUMB_BUILD
),y
)
26 AFLAGS_IMPLICIT_IT
:= $(call as-option
,-Wa
$(comma
)-mimplicit-it
=always
)
27 PF_CPPFLAGS_ARM
:= $(AFLAGS_IMPLICIT_IT
) \
28 $(call cc-option
, -mthumb
-mthumb-interwork
,\
29 $(call cc-option
,-marm
,)\
30 $(call cc-option
,-mno-thumb-interwork
,)\
33 PF_CPPFLAGS_ARM
:= $(call cc-option
,-marm
,) \
34 $(call cc-option
,-mno-thumb-interwork
,)
38 ifneq ($(CONFIG_SPL_BUILD
),y
)
39 ifeq ($(CONFIG_SYS_THUMB_BUILD
),y
)
40 archprepare
: checkthumb
43 @if
test "$(call cc-name)" = "gcc" -a \
44 "$(call cc-version)" -lt
"0404"; then \
45 echo
-n
'*** Your GCC does not produce working '; \
46 echo
'binaries in THUMB mode.'; \
47 echo
'*** Your board is configured for THUMB mode.'; \
53 # Try if EABI is supported, else fall back to old API,
55 # - with ELDK 4.2 (EABI supported), use:
57 # - with ELDK 4.1 (gcc 4.x, no EABI), use:
59 # - with ELDK 3.1 (gcc 3.x), use:
61 PF_CPPFLAGS_ABI
:= $(call cc-option
,\
70 PLATFORM_CPPFLAGS
+= $(PF_CPPFLAGS_ARM
) $(PF_CPPFLAGS_ABI
)
72 # For EABI, make sure to provide raise()
73 ifneq (,$(findstring -mabi
=aapcs-linux
,$(PLATFORM_CPPFLAGS
)))
74 # This file is parsed many times, so the string may get added multiple
75 # times. Also, the prefix needs to be different based on whether
76 # CONFIG_SPL_BUILD is defined or not. 'filter-out' the existing entry
77 # before adding the correct one.
78 PLATFORM_LIBS
:= arch
/arm
/lib
/eabi_compat.o \
79 $(filter-out arch
/arm
/lib
/eabi_compat.o
, $(PLATFORM_LIBS
))
82 # needed for relocation
83 LDFLAGS_u-boot
+= -pie
86 # FIXME: binutils versions < 2.22 have a bug in the assembler where
87 # branches to weak symbols can be incorrectly optimized in thumb mode
88 # to a short branch (b.n instruction) that won't reach when the symbol
91 # http://sourceware.org/bugzilla/show_bug.cgi?id=12532
93 ifeq ($(CONFIG_SYS_THUMB_BUILD
),y
)
94 ifeq ($(GAS_BUG_12532
),)
95 export GAS_BUG_12532
:=$(shell if
[ $(call binutils-version
) -lt
0222 ] ; \
96 then echo y
; else echo n
; fi
)
98 ifeq ($(GAS_BUG_12532
),y
)
99 PLATFORM_RELFLAGS
+= -fno-optimize-sibling-calls
103 ifneq ($(CONFIG_SPL_BUILD
),y
)
104 # Check that only R_ARM_RELATIVE relocations are generated.
105 ALL-y
+= checkarmreloc
106 # The movt / movw can hardcode 16 bit parts of the addresses in the
107 # instruction. Relocation is not supported for that case, so disable
108 # such usage by requiring word relocations.
109 PLATFORM_CPPFLAGS
+= $(call cc-option
, -mword-relocations
)
110 PLATFORM_CPPFLAGS
+= $(call cc-option
, -fno-pic
)
113 # limit ourselves to the sections we want in the .bin.
115 OBJCOPYFLAGS
+= -j .text
-j .rodata
-j .data
-j .u_boot_list
-j .rela.dyn
117 OBJCOPYFLAGS
+= -j .text
-j .secure_text
-j .rodata
-j .hash
-j .data
-j \
118 .got
-j .got.plt
-j .u_boot_list
-j .rel.dyn
121 ifdef CONFIG_OF_EMBED
122 OBJCOPYFLAGS
+= -j .dtb.init.rodata
125 ifneq ($(CONFIG_IMX_CONFIG
),)
127 ifndef CONFIG_SPL_BUILD
131 ifeq ($(CONFIG_OF_SEPARATE
),y
)
132 ALL-y
+= u-boot-dtb.imx