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Merge branch 'master' of git://git.denx.de/u-boot-uniphier
[u-boot] / 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_ARCH_OMAP2),)
10 CONFIG_STANDALONE_LOAD_ADDR = 0x80300000
11 else
12 CONFIG_STANDALONE_LOAD_ADDR = 0xc100000
13 endif
14 endif
15
16 CFLAGS_NON_EFI := -fno-pic -ffixed-r9 -ffunction-sections -fdata-sections
17 CFLAGS_EFI := -fpic -fshort-wchar
18
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,))
24
25 # LLVM support
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       += $(LLVM_RELFLAGS)
30
31 PLATFORM_CPPFLAGS += -D__ARM__
32
33 # Choose between ARM/Thumb instruction sets
34 ifeq ($(CONFIG_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,)\
40                 )
41 else
42 PF_CPPFLAGS_ARM := $(call cc-option,-marm,) \
43                 $(call cc-option,-mno-thumb-interwork,)
44 endif
45
46 # Only test once
47 ifneq ($(CONFIG_SPL_BUILD),y)
48 ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
49 archprepare: checkthumb
50
51 checkthumb:
52         @if test "$(call cc-name)" = "gcc" -a \
53                         "$(call cc-version)" -lt "0404"; then \
54                 echo -n '*** Your GCC does not produce working '; \
55                 echo 'binaries in THUMB mode.'; \
56                 echo '*** Your board is configured for THUMB mode.'; \
57                 false; \
58         fi
59 endif
60 endif
61
62 # Try if EABI is supported, else fall back to old API,
63 # i. e. for example:
64 # - with ELDK 4.2 (EABI supported), use:
65 #       -mabi=aapcs-linux
66 # - with ELDK 4.1 (gcc 4.x, no EABI), use:
67 #       -mabi=apcs-gnu
68 # - with ELDK 3.1 (gcc 3.x), use:
69 #       -mapcs-32
70 PF_CPPFLAGS_ABI := $(call cc-option,\
71                         -mabi=aapcs-linux,\
72                         $(call cc-option,\
73                                 -mapcs-32,\
74                                 $(call cc-option,\
75                                         -mabi=apcs-gnu,\
76                                 )\
77                         )\
78                 )
79 PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI)
80
81 # For EABI, make sure to provide raise()
82 ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
83 # This file is parsed many times, so the string may get added multiple
84 # times. Also, the prefix needs to be different based on whether
85 # CONFIG_SPL_BUILD is defined or not. 'filter-out' the existing entry
86 # before adding the correct one.
87 PLATFORM_LIBS := arch/arm/lib/eabi_compat.o \
88         $(filter-out arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS))
89 endif
90
91 # needed for relocation
92 LDFLAGS_u-boot += -pie
93
94 #
95 # FIXME: binutils versions < 2.22 have a bug in the assembler where
96 # branches to weak symbols can be incorrectly optimized in thumb mode
97 # to a short branch (b.n instruction) that won't reach when the symbol
98 # gets preempted
99 #
100 # http://sourceware.org/bugzilla/show_bug.cgi?id=12532
101 #
102 ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
103 ifeq ($(GAS_BUG_12532),)
104 export GAS_BUG_12532:=$(shell if [ $(call binutils-version) -lt 0222 ] ; \
105         then echo y; else echo n; fi)
106 endif
107 ifeq ($(GAS_BUG_12532),y)
108 PLATFORM_RELFLAGS += -fno-optimize-sibling-calls
109 endif
110 endif
111
112 ifneq ($(CONFIG_SPL_BUILD),y)
113 # Check that only R_ARM_RELATIVE relocations are generated.
114 ALL-y += checkarmreloc
115 # The movt / movw can hardcode 16 bit parts of the addresses in the
116 # instruction. Relocation is not supported for that case, so disable
117 # such usage by requiring word relocations.
118 PLATFORM_CPPFLAGS += $(call cc-option, -mword-relocations)
119 PLATFORM_CPPFLAGS += $(call cc-option, -fno-pic)
120 endif
121
122 # limit ourselves to the sections we want in the .bin.
123 ifdef CONFIG_ARM64
124 OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .data \
125                 -j .u_boot_list -j .rela.dyn
126 else
127 OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .hash \
128                 -j .data -j .got -j .got.plt -j .u_boot_list -j .rel.dyn
129 endif
130
131 ifdef CONFIG_OF_EMBED
132 OBJCOPYFLAGS += -j .dtb.init.rodata
133 endif
134
135 ifdef CONFIG_EFI_LOADER
136 OBJCOPYFLAGS += -j .efi_runtime -j .efi_runtime_rel
137 endif
138
139 ifneq ($(CONFIG_IMX_CONFIG),)
140 ifdef CONFIG_SPL
141 ifndef CONFIG_SPL_BUILD
142 ALL-y += SPL
143 endif
144 else
145 ifeq ($(CONFIG_OF_SEPARATE),y)
146 ALL-y += u-boot-dtb.imx
147 else
148 ALL-y += u-boot.imx
149 endif
150 endif
151 ifneq ($(CONFIG_VF610),)
152 ALL-y += u-boot.vyb
153 endif
154 endif
155
156 EFI_LDS := elf_arm_efi.lds
157 EFI_CRT0 := crt0_arm_efi.o
158 EFI_RELOC := reloc_arm_efi.o