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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
13LDFLAGS_vmlinux :=-p --no-undefined -X
14CPPFLAGS_vmlinux.lds = -DTEXT_OFFSET=$(TEXT_OFFSET)
15OBJCOPYFLAGS :=-O binary -R .note -R .note.gnu.build-id -R .comment -S
16GZFLAGS :=-9
17
18ifneq ($(CONFIG_RELOCATABLE),)
19LDFLAGS_vmlinux += -pie
20endif
21
22KBUILD_DEFCONFIG := defconfig
23
24# Check for binutils support for specific extensions
25lseinstr := $(call as-instr,.arch_extension lse,-DCONFIG_AS_LSE=1)
26
27ifeq ($(CONFIG_ARM64_LSE_ATOMICS), y)
28 ifeq ($(lseinstr),)
29$(warning LSE atomics not supported by binutils)
30 endif
31endif
32
33KBUILD_CFLAGS += -mgeneral-regs-only $(lseinstr)
34KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
35KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads)
36KBUILD_AFLAGS += $(lseinstr)
37
38ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
39KBUILD_CPPFLAGS += -mbig-endian
40AS += -EB
41LD += -EB
42else
43KBUILD_CPPFLAGS += -mlittle-endian
44AS += -EL
45LD += -EL
46endif
47
48CHECKFLAGS += -D__aarch64__
49
50ifeq ($(CONFIG_ARM64_MODULE_CMODEL_LARGE), y)
51KBUILD_CFLAGS_MODULE += -mcmodel=large
52endif
53
54ifeq ($(CONFIG_ARM64_MODULE_PLTS),y)
55KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/arm64/kernel/module.lds
56endif
57
58# Default value
59head-y := arch/arm64/kernel/head.o
60
61# The byte offset of the kernel image in RAM from the start of RAM.
62ifeq ($(CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET), y)
63TEXT_OFFSET := $(shell awk 'BEGIN {srand(); printf "0x%03x000\n", int(512 * rand())}')
64else
65TEXT_OFFSET := 0x00080000
66endif
67
68# KASAN_SHADOW_OFFSET = VA_START + (1 << (VA_BITS - 3)) - (1 << 61)
69# in 32-bit arithmetic
70KASAN_SHADOW_OFFSET := $(shell printf "0x%08x00000000\n" $$(( \
71 (0xffffffff & (-1 << ($(CONFIG_ARM64_VA_BITS) - 32))) \
72 + (1 << ($(CONFIG_ARM64_VA_BITS) - 32 - 3)) \
73 - (1 << (64 - 32 - 3)) )) )
74
75export TEXT_OFFSET GZFLAGS
76
77core-y += arch/arm64/kernel arch/arm64/mm/
78core-$(CONFIG_NET) += arch/arm64/net/
79core-$(CONFIG_KVM) += arch/arm64/kvm/
80core-$(CONFIG_XEN) += arch/arm64/xen/
81core-$(CONFIG_CRYPTO) += arch/arm64/crypto/
82libs-y := arch/arm64/lib/ $(libs-y)
83core-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a
84
85# Default target when executing plain make
86KBUILD_IMAGE := Image.gz
87KBUILD_DTBS := dtbs
88
89all: $(KBUILD_IMAGE) $(KBUILD_DTBS)
90
91boot := arch/arm64/boot
92
93Image: vmlinux
94 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
95
96Image.%: vmlinux
97 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
98
99zinstall install:
100 $(Q)$(MAKE) $(build)=$(boot) $@
101
102%.dtb: scripts
103 $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
104
105PHONY += dtbs dtbs_install
106
107dtbs: prepare scripts
108 $(Q)$(MAKE) $(build)=$(boot)/dts
109
110dtbs_install:
111 $(Q)$(MAKE) $(dtbinst)=$(boot)/dts
112
113PHONY += vdso_install
114vdso_install:
115 $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@
116
117# We use MRPROPER_FILES and CLEAN_FILES now
118archclean:
119 $(Q)$(MAKE) $(clean)=$(boot)
120 $(Q)$(MAKE) $(clean)=$(boot)/dts
121
122define archhelp
123 echo '* Image.gz - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)'
124 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
125 echo '* dtbs - Build device tree blobs for enabled boards'
126 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
127 echo ' install - Install uncompressed kernel'
128 echo ' zinstall - Install compressed kernel'
129 echo ' Install using (your) ~/bin/installkernel or'
130 echo ' (distribution) /sbin/installkernel or'
131 echo ' install to $$(INSTALL_PATH) and run lilo'
132endef
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
13LDFLAGS_vmlinux :=-p --no-undefined -X
14CPPFLAGS_vmlinux.lds = -DTEXT_OFFSET=$(TEXT_OFFSET)
15OBJCOPYFLAGS :=-O binary -R .note -R .note.gnu.build-id -R .comment -S
16GZFLAGS :=-9
17
18LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
19
20KBUILD_DEFCONFIG := defconfig
21
22KBUILD_CFLAGS += -mgeneral-regs-only
23ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
24KBUILD_CPPFLAGS += -mbig-endian
25AS += -EB
26LD += -EB
27else
28KBUILD_CPPFLAGS += -mlittle-endian
29AS += -EL
30LD += -EL
31endif
32
33comma = ,
34
35CHECKFLAGS += -D__aarch64__
36
37# Default value
38head-y := arch/arm64/kernel/head.o
39
40# The byte offset of the kernel image in RAM from the start of RAM.
41TEXT_OFFSET := 0x00080000
42
43export TEXT_OFFSET GZFLAGS
44
45core-y += arch/arm64/kernel arch/arm64/mm/
46core-$(CONFIG_KVM) += arch/arm64/kvm/
47core-$(CONFIG_XEN) += arch/arm64/xen/
48libs-y := arch/arm64/lib/ $(libs-y)
49libs-y += $(LIBGCC)
50
51# Default target when executing plain make
52KBUILD_IMAGE := Image.gz
53KBUILD_DTBS := dtbs
54
55all: $(KBUILD_IMAGE) $(KBUILD_DTBS)
56
57boot := arch/arm64/boot
58
59Image Image.gz: vmlinux
60 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
61
62zinstall install: vmlinux
63 $(Q)$(MAKE) $(build)=$(boot) $@
64
65%.dtb: scripts
66 $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
67
68dtbs: scripts
69 $(Q)$(MAKE) $(build)=$(boot)/dts dtbs
70
71PHONY += vdso_install
72vdso_install:
73 $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@
74
75# We use MRPROPER_FILES and CLEAN_FILES now
76archclean:
77 $(Q)$(MAKE) $(clean)=$(boot)
78
79define archhelp
80 echo '* Image.gz - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)'
81 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
82 echo '* dtbs - Build device tree blobs for enabled boards'
83 echo ' install - Install uncompressed kernel'
84 echo ' zinstall - Install compressed kernel'
85 echo ' Install using (your) ~/bin/installkernel or'
86 echo ' (distribution) /sbin/installkernel or'
87 echo ' install to $$(INSTALL_PATH) and run lilo'
88endef