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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=$(TEXT_OFFSET) | |
8c2c3df3 CM |
15 | GZFLAGS :=-9 |
16 | ||
1e48ef7f | 17 | ifneq ($(CONFIG_RELOCATABLE),) |
b9dce7f1 | 18 | LDFLAGS_vmlinux += -pie -shared -Bsymbolic |
1e48ef7f AB |
19 | endif |
20 | ||
6ffe9923 WD |
21 | ifeq ($(CONFIG_ARM64_ERRATUM_843419),y) |
22 | ifeq ($(call ld-option, --fix-cortex-a53-843419),) | |
23 | $(warning ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum) | |
24 | else | |
25 | LDFLAGS_vmlinux += --fix-cortex-a53-843419 | |
26 | endif | |
27 | endif | |
28 | ||
8c2c3df3 CM |
29 | KBUILD_DEFCONFIG := defconfig |
30 | ||
c09d6a04 WD |
31 | # Check for binutils support for specific extensions |
32 | lseinstr := $(call as-instr,.arch_extension lse,-DCONFIG_AS_LSE=1) | |
33 | ||
34 | ifeq ($(CONFIG_ARM64_LSE_ATOMICS), y) | |
35 | ifeq ($(lseinstr),) | |
36 | $(warning LSE atomics not supported by binutils) | |
37 | endif | |
38 | endif | |
39 | ||
d91750f1 | 40 | ifeq ($(CONFIG_ARM64), y) |
bbb56c27 MZ |
41 | brokengasinst := $(call as-instr,1:\n.inst 0\n.rept . - 1b\n\nnop\n.endr\n,,-DCONFIG_BROKEN_GAS_INST=1) |
42 | ||
d91750f1 | 43 | ifneq ($(brokengasinst),) |
bbb56c27 | 44 | $(warning Detected assembler with broken .inst; disassembly will be unreliable) |
d91750f1 | 45 | endif |
bbb56c27 MZ |
46 | endif |
47 | ||
48 | KBUILD_CFLAGS += -mgeneral-regs-only $(lseinstr) $(brokengasinst) | |
728dabd6 | 49 | KBUILD_CFLAGS += -fno-asynchronous-unwind-tables |
67dfa175 | 50 | KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads) |
bbb56c27 | 51 | KBUILD_AFLAGS += $(lseinstr) $(brokengasinst) |
c09d6a04 | 52 | |
a0974e6e WD |
53 | ifeq ($(CONFIG_CPU_BIG_ENDIAN), y) |
54 | KBUILD_CPPFLAGS += -mbig-endian | |
55 | AS += -EB | |
56 | LD += -EB | |
cfa88c79 | 57 | UTS_MACHINE := aarch64_be |
a0974e6e | 58 | else |
8c2c3df3 CM |
59 | KBUILD_CPPFLAGS += -mlittle-endian |
60 | AS += -EL | |
61 | LD += -EL | |
cfa88c79 | 62 | UTS_MACHINE := aarch64 |
a0974e6e | 63 | endif |
8c2c3df3 | 64 | |
8c2c3df3 CM |
65 | CHECKFLAGS += -D__aarch64__ |
66 | ||
fd045f6c | 67 | ifeq ($(CONFIG_ARM64_MODULE_CMODEL_LARGE), y) |
b6dd8e07 | 68 | KBUILD_CFLAGS_MODULE += -mcmodel=large |
df057cc7 WD |
69 | endif |
70 | ||
fd045f6c AB |
71 | ifeq ($(CONFIG_ARM64_MODULE_PLTS),y) |
72 | KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/arm64/kernel/module.lds | |
73 | endif | |
74 | ||
8c2c3df3 CM |
75 | # Default value |
76 | head-y := arch/arm64/kernel/head.o | |
77 | ||
78 | # The byte offset of the kernel image in RAM from the start of RAM. | |
da57a369 | 79 | ifeq ($(CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET), y) |
aed7eb83 MR |
80 | TEXT_OFFSET := $(shell awk "BEGIN {srand(); printf \"0x%06x\n\", \ |
81 | int(2 * 1024 * 1024 / (2 ^ $(CONFIG_ARM64_PAGE_SHIFT)) * \ | |
82 | rand()) * (2 ^ $(CONFIG_ARM64_PAGE_SHIFT))}") | |
da57a369 | 83 | else |
8c2c3df3 | 84 | TEXT_OFFSET := 0x00080000 |
da57a369 | 85 | endif |
8c2c3df3 | 86 | |
39d114dd AR |
87 | # KASAN_SHADOW_OFFSET = VA_START + (1 << (VA_BITS - 3)) - (1 << 61) |
88 | # in 32-bit arithmetic | |
89 | KASAN_SHADOW_OFFSET := $(shell printf "0x%08x00000000\n" $$(( \ | |
90 | (0xffffffff & (-1 << ($(CONFIG_ARM64_VA_BITS) - 32))) \ | |
91 | + (1 << ($(CONFIG_ARM64_VA_BITS) - 32 - 3)) \ | |
92 | - (1 << (64 - 32 - 3)) )) ) | |
93 | ||
8c2c3df3 CM |
94 | export TEXT_OFFSET GZFLAGS |
95 | ||
96 | core-y += arch/arm64/kernel/ arch/arm64/mm/ | |
e54bcde3 | 97 | core-$(CONFIG_NET) += arch/arm64/net/ |
6211753f | 98 | core-$(CONFIG_KVM) += arch/arm64/kvm/ |
63917f0b | 99 | core-$(CONFIG_XEN) += arch/arm64/xen/ |
2c98833a | 100 | core-$(CONFIG_CRYPTO) += arch/arm64/crypto/ |
8c2c3df3 | 101 | libs-y := arch/arm64/lib/ $(libs-y) |
ad08fd49 | 102 | core-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a |
8c2c3df3 CM |
103 | |
104 | # Default target when executing plain make | |
06995804 MM |
105 | boot := arch/arm64/boot |
106 | KBUILD_IMAGE := $(boot)/Image.gz | |
70f915a2 | 107 | KBUILD_DTBS := dtbs |
8c2c3df3 | 108 | |
06995804 | 109 | all: Image.gz $(KBUILD_DTBS) |
8c2c3df3 | 110 | |
8c2c3df3 | 111 | |
0723c05f OJ |
112 | Image: vmlinux |
113 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ | |
114 | ||
9ca4e58c | 115 | Image.%: Image |
70f915a2 | 116 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
8c2c3df3 | 117 | |
8684fa3e | 118 | zinstall install: |
70f915a2 | 119 | $(Q)$(MAKE) $(build)=$(boot) $@ |
8c2c3df3 | 120 | |
70f915a2 RH |
121 | %.dtb: scripts |
122 | $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@ | |
123 | ||
862f464a | 124 | PHONY += dtbs dtbs_install |
9fb5e537 RR |
125 | |
126 | dtbs: prepare scripts | |
d38726c4 | 127 | $(Q)$(MAKE) $(build)=$(boot)/dts |
8c2c3df3 | 128 | |
9fb5e537 RR |
129 | dtbs_install: |
130 | $(Q)$(MAKE) $(dtbinst)=$(boot)/dts | |
131 | ||
3c01742a KM |
132 | PHONY += vdso_install |
133 | vdso_install: | |
134 | $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@ | |
135 | ||
8c2c3df3 CM |
136 | # We use MRPROPER_FILES and CLEAN_FILES now |
137 | archclean: | |
138 | $(Q)$(MAKE) $(clean)=$(boot) | |
c7c52e48 | 139 | $(Q)$(MAKE) $(clean)=$(boot)/dts |
8c2c3df3 | 140 | |
a66649da KB |
141 | # We need to generate vdso-offsets.h before compiling certain files in kernel/. |
142 | # In order to do that, we should use the archprepare target, but we can't since | |
143 | # asm-offsets.h is included in some files used to generate vdso-offsets.h, and | |
144 | # asm-offsets.h is built in prepare0, for which archprepare is a dependency. | |
145 | # Therefore we need to generate the header after prepare0 has been made, hence | |
146 | # this hack. | |
147 | prepare: vdso_prepare | |
148 | vdso_prepare: prepare0 | |
149 | $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso include/generated/vdso-offsets.h | |
150 | ||
8c2c3df3 CM |
151 | define archhelp |
152 | echo '* Image.gz - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)' | |
153 | echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)' | |
70f915a2 | 154 | echo '* dtbs - Build device tree blobs for enabled boards' |
862f464a | 155 | echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)' |
8c2c3df3 CM |
156 | echo ' install - Install uncompressed kernel' |
157 | echo ' zinstall - Install compressed kernel' | |
158 | echo ' Install using (your) ~/bin/installkernel or' | |
159 | echo ' (distribution) /sbin/installkernel or' | |
160 | echo ' install to $$(INSTALL_PATH) and run lilo' | |
161 | endef |