summaryrefslogtreecommitdiff
path: root/arch/arm64/Makefile
blob: 7085e322dc42675cf9e502553220096a27eae44b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
#
# arch/arm64/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
# This file is subject to the terms and conditions of the GNU General Public
# License.  See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1995-2001 by Russell King

LDFLAGS_vmlinux	:=-p --no-undefined -X
CPPFLAGS_vmlinux.lds = -DTEXT_OFFSET=$(TEXT_OFFSET)
OBJCOPYFLAGS	:=-O binary -R .note -R .note.gnu.build-id -R .comment -S
GZFLAGS		:=-9

ifneq ($(CONFIG_RELOCATABLE),)
LDFLAGS_vmlinux		+= -pie
endif

KBUILD_DEFCONFIG := defconfig

# Check for binutils support for specific extensions
lseinstr := $(call as-instr,.arch_extension lse,-DCONFIG_AS_LSE=1)

ifeq ($(CONFIG_ARM64_LSE_ATOMICS), y)
  ifeq ($(lseinstr),)
$(warning LSE atomics not supported by binutils)
  endif
endif

KBUILD_CFLAGS	+= -mgeneral-regs-only $(lseinstr)
KBUILD_CFLAGS	+= -fno-asynchronous-unwind-tables
KBUILD_CFLAGS	+= $(call cc-option, -mpc-relative-literal-loads)
KBUILD_AFLAGS	+= $(lseinstr)

ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
KBUILD_CPPFLAGS	+= -mbig-endian
AS		+= -EB
LD		+= -EB
else
KBUILD_CPPFLAGS	+= -mlittle-endian
AS		+= -EL
LD		+= -EL
endif

CHECKFLAGS	+= -D__aarch64__

ifeq ($(CONFIG_ARM64_MODULE_CMODEL_LARGE), y)
KBUILD_CFLAGS_MODULE	+= -mcmodel=large
endif

ifeq ($(CONFIG_ARM64_MODULE_PLTS),y)
KBUILD_LDFLAGS_MODULE	+= -T $(srctree)/arch/arm64/kernel/module.lds
endif

# Default value
head-y		:= arch/arm64/kernel/head.o

# The byte offset of the kernel image in RAM from the start of RAM.
ifeq ($(CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET), y)
TEXT_OFFSET := $(shell awk "BEGIN {srand(); printf \"0x%06x\n\", \
		 int(2 * 1024 * 1024 / (2 ^ $(CONFIG_ARM64_PAGE_SHIFT)) * \
		 rand()) * (2 ^ $(CONFIG_ARM64_PAGE_SHIFT))}")
else
TEXT_OFFSET := 0x00080000
endif

# KASAN_SHADOW_OFFSET = VA_START + (1 << (VA_BITS - 3)) - (1 << 61)
# in 32-bit arithmetic
KASAN_SHADOW_OFFSET := $(shell printf "0x%08x00000000\n" $$(( \
			(0xffffffff & (-1 << ($(CONFIG_ARM64_VA_BITS) - 32))) \
			+ (1 << ($(CONFIG_ARM64_VA_BITS) - 32 - 3)) \
			- (1 << (64 - 32 - 3)) )) )

export	TEXT_OFFSET GZFLAGS

core-y		+= arch/arm64/kernel/ arch/arm64/mm/
core-$(CONFIG_NET) += arch/arm64/net/
core-$(CONFIG_KVM) += arch/arm64/kvm/
core-$(CONFIG_XEN) += arch/arm64/xen/
core-$(CONFIG_CRYPTO) += arch/arm64/crypto/
libs-y		:= arch/arm64/lib/ $(libs-y)
core-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a

# Default target when executing plain make
KBUILD_IMAGE	:= Image.gz
KBUILD_DTBS	:= dtbs

all:	$(KBUILD_IMAGE) $(KBUILD_DTBS)

boot := arch/arm64/boot

Image: vmlinux
	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@

Image.%: vmlinux
	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@

zinstall install:
	$(Q)$(MAKE) $(build)=$(boot) $@

%.dtb: scripts
	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@

PHONY += dtbs dtbs_install

dtbs: prepare scripts
	$(Q)$(MAKE) $(build)=$(boot)/dts

dtbs_install:
	$(Q)$(MAKE) $(dtbinst)=$(boot)/dts

PHONY += vdso_install
vdso_install:
	$(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@

# We use MRPROPER_FILES and CLEAN_FILES now
archclean:
	$(Q)$(MAKE) $(clean)=$(boot)
	$(Q)$(MAKE) $(clean)=$(boot)/dts

define archhelp
  echo  '* Image.gz      - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)'
  echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
  echo  '* dtbs          - Build device tree blobs for enabled boards'
  echo  '  dtbs_install  - Install dtbs to $(INSTALL_DTBS_PATH)'
  echo  '  install       - Install uncompressed kernel'
  echo  '  zinstall      - Install compressed kernel'
  echo  '                  Install using (your) ~/bin/installkernel or'
  echo  '                  (distribution) /sbin/installkernel or'
  echo  '                  install to $$(INSTALL_PATH) and run lilo'
endef