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8c2c3df3 CM |
1 | # |
2 | # arch/arm64/Makefile | |
3 | # | |
4 | # This file is included by the global makefile so that you can add your own | |
5 | # architecture-specific flags and dependencies. | |
6 | # | |
7 | # This file is subject to the terms and conditions of the GNU General Public | |
8 | # License. See the file "COPYING" in the main directory of this archive | |
9 | # for more details. | |
10 | # | |
11 | # Copyright (C) 1995-2001 by Russell King | |
12 | ||
13 | LDFLAGS_vmlinux :=-p --no-undefined -X | |
14 | CPPFLAGS_vmlinux.lds = -DTEXT_OFFSET=$(TEXT_OFFSET) | |
15 | OBJCOPYFLAGS :=-O binary -R .note -R .note.gnu.build-id -R .comment -S | |
16 | GZFLAGS :=-9 | |
17 | ||
01684359 | 18 | ifneq ($(CONFIG_RELOCATABLE),) |
8f012745 | 19 | LDFLAGS_vmlinux += -pie -Bsymbolic |
01684359 AB |
20 | endif |
21 | ||
8c2c3df3 CM |
22 | KBUILD_DEFCONFIG := defconfig |
23 | ||
c09d6a04 WD |
24 | # Check for binutils support for specific extensions |
25 | lseinstr := $(call as-instr,.arch_extension lse,-DCONFIG_AS_LSE=1) | |
26 | ||
27 | ifeq ($(CONFIG_ARM64_LSE_ATOMICS), y) | |
28 | ifeq ($(lseinstr),) | |
29 | $(warning LSE atomics not supported by binutils) | |
30 | endif | |
31 | endif | |
32 | ||
20ea9516 GH |
33 | ifeq ($(cc-name),clang) |
34 | # This is a workaround for https://bugs.llvm.org/show_bug.cgi?id=30792. | |
35 | # TODO: revert when this is fixed in LLVM. | |
36 | KBUILD_CFLAGS += -mno-implicit-float | |
37 | else | |
38 | KBUILD_CFLAGS += -mgeneral-regs-only | |
39 | endif | |
40 | KBUILD_CFLAGS += $(lseinstr) | |
2e039261 | 41 | KBUILD_CFLAGS += -fno-pic |
72034521 | 42 | KBUILD_CFLAGS += -fno-asynchronous-unwind-tables |
db8bb76c | 43 | KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads) |
c09d6a04 WD |
44 | KBUILD_AFLAGS += $(lseinstr) |
45 | ||
a0974e6e WD |
46 | ifeq ($(CONFIG_CPU_BIG_ENDIAN), y) |
47 | KBUILD_CPPFLAGS += -mbig-endian | |
48 | AS += -EB | |
49 | LD += -EB | |
50 | else | |
8c2c3df3 CM |
51 | KBUILD_CPPFLAGS += -mlittle-endian |
52 | AS += -EL | |
53 | LD += -EL | |
a0974e6e | 54 | endif |
8c2c3df3 | 55 | |
8c2c3df3 CM |
56 | CHECKFLAGS += -D__aarch64__ |
57 | ||
4166edc4 | 58 | ifeq ($(CONFIG_ARM64_MODULE_CMODEL_LARGE), y) |
b6dd8e07 | 59 | KBUILD_CFLAGS_MODULE += -mcmodel=large |
df057cc7 WD |
60 | endif |
61 | ||
4166edc4 AB |
62 | ifeq ($(CONFIG_ARM64_MODULE_PLTS),y) |
63 | KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/arm64/kernel/module.lds | |
64 | endif | |
65 | ||
8c2c3df3 CM |
66 | # Default value |
67 | head-y := arch/arm64/kernel/head.o | |
68 | ||
69 | # The byte offset of the kernel image in RAM from the start of RAM. | |
da57a369 | 70 | ifeq ($(CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET), y) |
4190312b | 71 | TEXT_OFFSET := $(shell awk 'BEGIN {srand(); printf "0x%03x000\n", int(512 * rand())}') |
da57a369 | 72 | else |
8c2c3df3 | 73 | TEXT_OFFSET := 0x00080000 |
da57a369 | 74 | endif |
8c2c3df3 | 75 | |
e9186826 MK |
76 | ifeq ($(cc-name),clang) |
77 | KBUILD_CFLAGS += $(call cc-disable-warning, asm-operand-widths) | |
78 | endif | |
79 | ||
39d114dd AR |
80 | # KASAN_SHADOW_OFFSET = VA_START + (1 << (VA_BITS - 3)) - (1 << 61) |
81 | # in 32-bit arithmetic | |
82 | KASAN_SHADOW_OFFSET := $(shell printf "0x%08x00000000\n" $$(( \ | |
83 | (0xffffffff & (-1 << ($(CONFIG_ARM64_VA_BITS) - 32))) \ | |
84 | + (1 << ($(CONFIG_ARM64_VA_BITS) - 32 - 3)) \ | |
85 | - (1 << (64 - 32 - 3)) )) ) | |
86 | ||
8c2c3df3 CM |
87 | export TEXT_OFFSET GZFLAGS |
88 | ||
89 | core-y += arch/arm64/kernel/ arch/arm64/mm/ | |
e54bcde3 | 90 | core-$(CONFIG_NET) += arch/arm64/net/ |
6211753f | 91 | core-$(CONFIG_KVM) += arch/arm64/kvm/ |
63917f0b | 92 | core-$(CONFIG_XEN) += arch/arm64/xen/ |
2c98833a | 93 | core-$(CONFIG_CRYPTO) += arch/arm64/crypto/ |
8c2c3df3 | 94 | libs-y := arch/arm64/lib/ $(libs-y) |
ad08fd49 | 95 | core-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a |
8c2c3df3 CM |
96 | |
97 | # Default target when executing plain make | |
69a800c9 | 98 | ifeq ($(CONFIG_BUILD_ARM64_APPENDED_DTB_IMAGE),y) |
a08cafa7 | 99 | KBUILD_IMAGE := $(subst $\",,$(CONFIG_BUILD_ARM64_APPENDED_KERNEL_IMAGE_NAME)) |
69a800c9 | 100 | else |
70f915a2 | 101 | KBUILD_IMAGE := Image.gz |
69a800c9 AR |
102 | endif |
103 | ||
70f915a2 | 104 | KBUILD_DTBS := dtbs |
8c2c3df3 | 105 | |
70f915a2 | 106 | all: $(KBUILD_IMAGE) $(KBUILD_DTBS) |
8c2c3df3 CM |
107 | |
108 | boot := arch/arm64/boot | |
109 | ||
0723c05f OJ |
110 | Image: vmlinux |
111 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ | |
112 | ||
113 | Image.%: vmlinux | |
70f915a2 | 114 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
8c2c3df3 CM |
115 | |
116 | zinstall install: vmlinux | |
70f915a2 | 117 | $(Q)$(MAKE) $(build)=$(boot) $@ |
8c2c3df3 | 118 | |
70f915a2 RH |
119 | %.dtb: scripts |
120 | $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@ | |
121 | ||
862f464a | 122 | PHONY += dtbs dtbs_install |
9fb5e537 RR |
123 | |
124 | dtbs: prepare scripts | |
d38726c4 | 125 | $(Q)$(MAKE) $(build)=$(boot)/dts |
8c2c3df3 | 126 | |
9fb5e537 RR |
127 | dtbs_install: |
128 | $(Q)$(MAKE) $(dtbinst)=$(boot)/dts | |
129 | ||
c11dd134 | 130 | Image-dtb Image.gz-dtb: vmlinux scripts dtbs |
69a800c9 AR |
131 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
132 | ||
3c01742a KM |
133 | PHONY += vdso_install |
134 | vdso_install: | |
135 | $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@ | |
136 | ||
8c2c3df3 CM |
137 | # We use MRPROPER_FILES and CLEAN_FILES now |
138 | archclean: | |
139 | $(Q)$(MAKE) $(clean)=$(boot) | |
c7c52e48 | 140 | $(Q)$(MAKE) $(clean)=$(boot)/dts |
8c2c3df3 | 141 | |
fb47dee8 KB |
142 | # We need to generate vdso-offsets.h before compiling certain files in kernel/. |
143 | # In order to do that, we should use the archprepare target, but we can't since | |
144 | # asm-offsets.h is included in some files used to generate vdso-offsets.h, and | |
145 | # asm-offsets.h is built in prepare0, for which archprepare is a dependency. | |
146 | # Therefore we need to generate the header after prepare0 has been made, hence | |
147 | # this hack. | |
148 | prepare: vdso_prepare | |
149 | vdso_prepare: prepare0 | |
150 | $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso include/generated/vdso-offsets.h | |
151 | ||
8c2c3df3 CM |
152 | define archhelp |
153 | echo '* Image.gz - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)' | |
154 | echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)' | |
70f915a2 | 155 | echo '* dtbs - Build device tree blobs for enabled boards' |
862f464a | 156 | echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)' |
8c2c3df3 CM |
157 | echo ' install - Install uncompressed kernel' |
158 | echo ' zinstall - Install compressed kernel' | |
159 | echo ' Install using (your) ~/bin/installkernel or' | |
160 | echo ' (distribution) /sbin/installkernel or' | |
161 | echo ' install to $$(INSTALL_PATH) and run lilo' | |
162 | endef |