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
18KBUILD_DEFCONFIG := defconfig
19
20KBUILD_CFLAGS	+= -mgeneral-regs-only
21KBUILD_CFLAGS	+= $(call cc-option, -mpc-relative-literal-loads)
22
23ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
24KBUILD_CPPFLAGS	+= -mbig-endian
25AS		+= -EB
26LD		+= -EB
27else
28KBUILD_CPPFLAGS	+= -mlittle-endian
29AS		+= -EL
30LD		+= -EL
31endif
32
33CHECKFLAGS	+= -D__aarch64__
34
35ifeq ($(CONFIG_ARM64_ERRATUM_843419), y)
36KBUILD_CFLAGS_MODULE	+= -mcmodel=large
37endif
38
39# Default value
40head-y		:= arch/arm64/kernel/head.o
41
42# The byte offset of the kernel image in RAM from the start of RAM.
43ifeq ($(CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET), y)
44TEXT_OFFSET := $(shell awk 'BEGIN {srand(); printf "0x%03x000\n", int(512 * rand())}')
45else
46TEXT_OFFSET := 0x00080000
47endif
48
49export	TEXT_OFFSET GZFLAGS
50
51core-y		+= arch/arm64/kernel/ arch/arm64/mm/
52core-$(CONFIG_NET) += arch/arm64/net/
53core-$(CONFIG_KVM) += arch/arm64/kvm/
54core-$(CONFIG_XEN) += arch/arm64/xen/
55core-$(CONFIG_CRYPTO) += arch/arm64/crypto/
56libs-y		:= arch/arm64/lib/ $(libs-y)
57core-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a
58
59# Default target when executing plain make
60KBUILD_IMAGE	:= Image.gz
61KBUILD_DTBS	:= dtbs
62
63all:	$(KBUILD_IMAGE) $(KBUILD_DTBS)
64
65boot := arch/arm64/boot
66
67Image Image.gz: vmlinux
68	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
69
70zinstall install: vmlinux
71	$(Q)$(MAKE) $(build)=$(boot) $@
72
73%.dtb: scripts
74	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
75
76PHONY += dtbs dtbs_install
77
78dtbs: prepare scripts
79	$(Q)$(MAKE) $(build)=$(boot)/dts
80
81dtbs_install:
82	$(Q)$(MAKE) $(dtbinst)=$(boot)/dts
83
84PHONY += vdso_install
85vdso_install:
86	$(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@
87
88# We use MRPROPER_FILES and CLEAN_FILES now
89archclean:
90	$(Q)$(MAKE) $(clean)=$(boot)
91	$(Q)$(MAKE) $(clean)=$(boot)/dts
92
93define archhelp
94  echo  '* Image.gz      - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)'
95  echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
96  echo  '* dtbs          - Build device tree blobs for enabled boards'
97  echo  '  dtbs_install  - Install dtbs to $(INSTALL_DTBS_PATH)'
98  echo  '  install       - Install uncompressed kernel'
99  echo  '  zinstall      - Install compressed kernel'
100  echo  '                  Install using (your) ~/bin/installkernel or'
101  echo  '                  (distribution) /sbin/installkernel or'
102  echo  '                  install to $$(INSTALL_PATH) and run lilo'
103endef
104