Merge branch 'u-boot-ti/master' into 'u-boot-arm/master'
[karo-tx-uboot.git] / arch / arm / config.mk
1 #
2 # (C) Copyright 2000-2002
3 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 #
5 # SPDX-License-Identifier:      GPL-2.0+
6 #
7
8 ifndef CONFIG_STANDALONE_LOAD_ADDR
9 ifneq ($(CONFIG_OMAP_COMMON),)
10 CONFIG_STANDALONE_LOAD_ADDR = 0x80300000
11 else
12 CONFIG_STANDALONE_LOAD_ADDR = 0xc100000
13 endif
14 endif
15
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,))
21
22 # Support generic board on ARM
23 __HAVE_ARCH_GENERIC_BOARD := y
24
25 PLATFORM_CPPFLAGS += -DCONFIG_ARM -D__ARM__
26
27 # Choose between ARM/Thumb instruction sets
28 ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
29 PF_CPPFLAGS_ARM := $(call cc-option, -mthumb -mthumb-interwork,\
30                         $(call cc-option,-marm,)\
31                         $(call cc-option,-mno-thumb-interwork,)\
32                 )
33 else
34 PF_CPPFLAGS_ARM := $(call cc-option,-marm,) \
35                 $(call cc-option,-mno-thumb-interwork,)
36 endif
37
38 # Only test once
39 ifneq ($(CONFIG_SPL_BUILD),y)
40 ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
41 archprepare: checkthumb
42
43 checkthumb:
44         @if test "$(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.'; \
48                 false; \
49         fi
50 endif
51 endif
52
53 # Try if EABI is supported, else fall back to old API,
54 # i. e. for example:
55 # - with ELDK 4.2 (EABI supported), use:
56 #       -mabi=aapcs-linux
57 # - with ELDK 4.1 (gcc 4.x, no EABI), use:
58 #       -mabi=apcs-gnu
59 # - with ELDK 3.1 (gcc 3.x), use:
60 #       -mapcs-32
61 PF_CPPFLAGS_ABI := $(call cc-option,\
62                         -mabi=aapcs-linux,\
63                         $(call cc-option,\
64                                 -mapcs-32,\
65                                 $(call cc-option,\
66                                         -mabi=apcs-gnu,\
67                                 )\
68                         )\
69                 )
70 PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI)
71
72 # For EABI, make sure to provide raise()
73 ifneq (,$(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, $(PLATFORM_LIBS))
80 endif
81
82 # needed for relocation
83 LDFLAGS_u-boot += -pie
84
85 #
86 # FIXME: binutils versions < 2.22 have a bug in the assembler where
87 # branches to weak symbols can be incorrectly optimized in thumb mode
88 # to a short branch (b.n instruction) that won't reach when the symbol
89 # gets preempted
90 #
91 # http://sourceware.org/bugzilla/show_bug.cgi?id=12532
92 #
93 ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
94 ifeq ($(GAS_BUG_12532),)
95 export GAS_BUG_12532:=$(shell if [ $(call binutils-version) -lt 0222 ] ; \
96         then echo y; else echo n; fi)
97 endif
98 ifeq ($(GAS_BUG_12532),y)
99 PLATFORM_RELFLAGS += -fno-optimize-sibling-calls
100 endif
101 endif
102
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 += $(call cc-option, -mword-relocations)
110 endif
111
112 # limit ourselves to the sections we want in the .bin.
113 ifdef CONFIG_ARM64
114 OBJCOPYFLAGS += -j .text -j .rodata -j .data -j .u_boot_list -j .rela.dyn
115 else
116 OBJCOPYFLAGS += -j .text -j .rodata -j .hash -j .data -j .got.plt -j .u_boot_list -j .rel.dyn
117 endif
118
119 ifneq ($(CONFIG_IMX_CONFIG),)
120 ifdef CONFIG_SPL
121 ifndef CONFIG_SPL_BUILD
122 ALL-y += SPL
123 endif
124 else
125 ifeq ($(CONFIG_OF_SEPARATE),y)
126 ALL-y += u-boot-dtb.imx
127 else
128 ALL-y += u-boot.imx
129 endif
130 endif
131 endif