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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=$(TEXT_OFFSET) | |
8c2c3df3 CM |
15 | GZFLAGS :=-9 |
16 | ||
fd9dde6a ND |
17 | ifeq ($(CONFIG_RELOCATABLE), y) |
18 | # Pass --no-apply-dynamic-relocs to restore pre-binutils-2.27 behaviour | |
19 | # for relative relocs, since this leads to better Image compression | |
20 | # with the relocation offsets always being zero. | |
21 | LDFLAGS_vmlinux += -pie -shared -Bsymbolic \ | |
22 | $(call ld-option, --no-apply-dynamic-relocs) | |
1e48ef7f AB |
23 | endif |
24 | ||
6ffe9923 WD |
25 | ifeq ($(CONFIG_ARM64_ERRATUM_843419),y) |
26 | ifeq ($(call ld-option, --fix-cortex-a53-843419),) | |
27 | $(warning ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum) | |
28 | else | |
29 | LDFLAGS_vmlinux += --fix-cortex-a53-843419 | |
30 | endif | |
31 | endif | |
32 | ||
8c2c3df3 CM |
33 | KBUILD_DEFCONFIG := defconfig |
34 | ||
c09d6a04 WD |
35 | # Check for binutils support for specific extensions |
36 | lseinstr := $(call as-instr,.arch_extension lse,-DCONFIG_AS_LSE=1) | |
37 | ||
38 | ifeq ($(CONFIG_ARM64_LSE_ATOMICS), y) | |
39 | ifeq ($(lseinstr),) | |
40 | $(warning LSE atomics not supported by binutils) | |
41 | endif | |
42 | endif | |
43 | ||
d91750f1 | 44 | ifeq ($(CONFIG_ARM64), y) |
bbb56c27 MZ |
45 | brokengasinst := $(call as-instr,1:\n.inst 0\n.rept . - 1b\n\nnop\n.endr\n,,-DCONFIG_BROKEN_GAS_INST=1) |
46 | ||
d91750f1 | 47 | ifneq ($(brokengasinst),) |
bbb56c27 | 48 | $(warning Detected assembler with broken .inst; disassembly will be unreliable) |
d91750f1 | 49 | endif |
bbb56c27 MZ |
50 | endif |
51 | ||
52 | KBUILD_CFLAGS += -mgeneral-regs-only $(lseinstr) $(brokengasinst) | |
728dabd6 | 53 | KBUILD_CFLAGS += -fno-asynchronous-unwind-tables |
67dfa175 | 54 | KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads) |
bbb56c27 | 55 | KBUILD_AFLAGS += $(lseinstr) $(brokengasinst) |
c09d6a04 | 56 | |
3d6a7b99 AP |
57 | KBUILD_CFLAGS += $(call cc-option,-mabi=lp64) |
58 | KBUILD_AFLAGS += $(call cc-option,-mabi=lp64) | |
59 | ||
fb872273 JD |
60 | KBUILD_CFLAGS += $(call cc-ifversion, -ge, 0500, -DCONFIG_ARCH_SUPPORTS_INT128) |
61 | ||
a0974e6e WD |
62 | ifeq ($(CONFIG_CPU_BIG_ENDIAN), y) |
63 | KBUILD_CPPFLAGS += -mbig-endian | |
bcde519e | 64 | CHECKFLAGS += -D__AARCH64EB__ |
a0974e6e WD |
65 | AS += -EB |
66 | LD += -EB | |
3d6a7b99 | 67 | LDFLAGS += -maarch64linuxb |
cfa88c79 | 68 | UTS_MACHINE := aarch64_be |
a0974e6e | 69 | else |
8c2c3df3 | 70 | KBUILD_CPPFLAGS += -mlittle-endian |
bcde519e | 71 | CHECKFLAGS += -D__AARCH64EL__ |
8c2c3df3 CM |
72 | AS += -EL |
73 | LD += -EL | |
3d6a7b99 | 74 | LDFLAGS += -maarch64linux |
cfa88c79 | 75 | UTS_MACHINE := aarch64 |
a0974e6e | 76 | endif |
8c2c3df3 | 77 | |
f5d28490 | 78 | CHECKFLAGS += -D__aarch64__ -m64 |
8c2c3df3 | 79 | |
fd045f6c | 80 | ifeq ($(CONFIG_ARM64_MODULE_CMODEL_LARGE), y) |
b6dd8e07 | 81 | KBUILD_CFLAGS_MODULE += -mcmodel=large |
df057cc7 WD |
82 | endif |
83 | ||
fd045f6c AB |
84 | ifeq ($(CONFIG_ARM64_MODULE_PLTS),y) |
85 | KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/arm64/kernel/module.lds | |
86 | endif | |
87 | ||
8c2c3df3 CM |
88 | # Default value |
89 | head-y := arch/arm64/kernel/head.o | |
90 | ||
91 | # The byte offset of the kernel image in RAM from the start of RAM. | |
da57a369 | 92 | ifeq ($(CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET), y) |
aed7eb83 MR |
93 | TEXT_OFFSET := $(shell awk "BEGIN {srand(); printf \"0x%06x\n\", \ |
94 | int(2 * 1024 * 1024 / (2 ^ $(CONFIG_ARM64_PAGE_SHIFT)) * \ | |
95 | rand()) * (2 ^ $(CONFIG_ARM64_PAGE_SHIFT))}") | |
da57a369 | 96 | else |
8c2c3df3 | 97 | TEXT_OFFSET := 0x00080000 |
da57a369 | 98 | endif |
8c2c3df3 | 99 | |
39d114dd AR |
100 | # KASAN_SHADOW_OFFSET = VA_START + (1 << (VA_BITS - 3)) - (1 << 61) |
101 | # in 32-bit arithmetic | |
102 | KASAN_SHADOW_OFFSET := $(shell printf "0x%08x00000000\n" $$(( \ | |
103 | (0xffffffff & (-1 << ($(CONFIG_ARM64_VA_BITS) - 32))) \ | |
104 | + (1 << ($(CONFIG_ARM64_VA_BITS) - 32 - 3)) \ | |
105 | - (1 << (64 - 32 - 3)) )) ) | |
106 | ||
8c2c3df3 CM |
107 | export TEXT_OFFSET GZFLAGS |
108 | ||
109 | core-y += arch/arm64/kernel/ arch/arm64/mm/ | |
e54bcde3 | 110 | core-$(CONFIG_NET) += arch/arm64/net/ |
6211753f | 111 | core-$(CONFIG_KVM) += arch/arm64/kvm/ |
63917f0b | 112 | core-$(CONFIG_XEN) += arch/arm64/xen/ |
2c98833a | 113 | core-$(CONFIG_CRYPTO) += arch/arm64/crypto/ |
8c2c3df3 | 114 | libs-y := arch/arm64/lib/ $(libs-y) |
ad08fd49 | 115 | core-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a |
8c2c3df3 CM |
116 | |
117 | # Default target when executing plain make | |
06995804 MM |
118 | boot := arch/arm64/boot |
119 | KBUILD_IMAGE := $(boot)/Image.gz | |
70f915a2 | 120 | KBUILD_DTBS := dtbs |
8c2c3df3 | 121 | |
06995804 | 122 | all: Image.gz $(KBUILD_DTBS) |
8c2c3df3 | 123 | |
8c2c3df3 | 124 | |
0723c05f OJ |
125 | Image: vmlinux |
126 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ | |
127 | ||
9ca4e58c | 128 | Image.%: Image |
70f915a2 | 129 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
8c2c3df3 | 130 | |
8684fa3e | 131 | zinstall install: |
70f915a2 | 132 | $(Q)$(MAKE) $(build)=$(boot) $@ |
8c2c3df3 | 133 | |
70f915a2 RH |
134 | %.dtb: scripts |
135 | $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@ | |
136 | ||
862f464a | 137 | PHONY += dtbs dtbs_install |
9fb5e537 RR |
138 | |
139 | dtbs: prepare scripts | |
d38726c4 | 140 | $(Q)$(MAKE) $(build)=$(boot)/dts |
8c2c3df3 | 141 | |
9fb5e537 RR |
142 | dtbs_install: |
143 | $(Q)$(MAKE) $(dtbinst)=$(boot)/dts | |
144 | ||
3c01742a KM |
145 | PHONY += vdso_install |
146 | vdso_install: | |
147 | $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@ | |
148 | ||
8c2c3df3 CM |
149 | # We use MRPROPER_FILES and CLEAN_FILES now |
150 | archclean: | |
151 | $(Q)$(MAKE) $(clean)=$(boot) | |
c7c52e48 | 152 | $(Q)$(MAKE) $(clean)=$(boot)/dts |
8c2c3df3 | 153 | |
a66649da KB |
154 | # We need to generate vdso-offsets.h before compiling certain files in kernel/. |
155 | # In order to do that, we should use the archprepare target, but we can't since | |
156 | # asm-offsets.h is included in some files used to generate vdso-offsets.h, and | |
157 | # asm-offsets.h is built in prepare0, for which archprepare is a dependency. | |
158 | # Therefore we need to generate the header after prepare0 has been made, hence | |
159 | # this hack. | |
160 | prepare: vdso_prepare | |
161 | vdso_prepare: prepare0 | |
162 | $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso include/generated/vdso-offsets.h | |
163 | ||
8c2c3df3 CM |
164 | define archhelp |
165 | echo '* Image.gz - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)' | |
166 | echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)' | |
70f915a2 | 167 | echo '* dtbs - Build device tree blobs for enabled boards' |
862f464a | 168 | echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)' |
8c2c3df3 CM |
169 | echo ' install - Install uncompressed kernel' |
170 | echo ' zinstall - Install compressed kernel' | |
171 | echo ' Install using (your) ~/bin/installkernel or' | |
172 | echo ' (distribution) /sbin/installkernel or' | |
173 | echo ' install to $$(INSTALL_PATH) and run lilo' | |
174 | endef |