xref: /openbmc/linux/arch/arm64/Makefile (revision d894fc60) 
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=$(TEXT_OFFSET)
15OBJCOPYFLAGS	:=-O binary -R .note -R .note.gnu.build-id -R .comment -S
16GZFLAGS		:=-9
17
18KBUILD_DEFCONFIG := defconfig
19
20KBUILD_CFLAGS	+= -mgeneral-regs-only
21ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
22KBUILD_CPPFLAGS	+= -mbig-endian
23AS		+= -EB
24LD		+= -EB
25else
26KBUILD_CPPFLAGS	+= -mlittle-endian
27AS		+= -EL
28LD		+= -EL
29endif
30
31CHECKFLAGS	+= -D__aarch64__
32
33# Default value
34head-y		:= arch/arm64/kernel/head.o
35
36# The byte offset of the kernel image in RAM from the start of RAM.
37ifeq ($(CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET), y)
38TEXT_OFFSET := $(shell awk 'BEGIN {srand(); printf "0x%03x000\n", int(512 * rand())}')
39else
40TEXT_OFFSET := 0x00080000
41endif
42
43export	TEXT_OFFSET GZFLAGS
44
45core-y		+= arch/arm64/kernel/ arch/arm64/mm/
46core-$(CONFIG_NET) += arch/arm64/net/
47core-$(CONFIG_KVM) += arch/arm64/kvm/
48core-$(CONFIG_XEN) += arch/arm64/xen/
49core-$(CONFIG_CRYPTO) += arch/arm64/crypto/
50libs-y		:= arch/arm64/lib/ $(libs-y)
51libs-$(CONFIG_EFI_STUB) += drivers/firmware/efi/libstub/
52
53# Default target when executing plain make
54KBUILD_IMAGE	:= Image.gz
55KBUILD_DTBS	:= dtbs
56
57all:	$(KBUILD_IMAGE) $(KBUILD_DTBS)
58
59boot := arch/arm64/boot
60
61Image Image.gz: vmlinux
62	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
63
64zinstall install: vmlinux
65	$(Q)$(MAKE) $(build)=$(boot) $@
66
67%.dtb: scripts
68	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
69
70PHONY += dtbs dtbs_install
71
72dtbs: prepare scripts
73	$(Q)$(MAKE) $(build)=$(boot)/dts
74
75dtbs_install:
76	$(Q)$(MAKE) $(dtbinst)=$(boot)/dts
77
78PHONY += vdso_install
79vdso_install:
80	$(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@
81
82# We use MRPROPER_FILES and CLEAN_FILES now
83archclean:
84	$(Q)$(MAKE) $(clean)=$(boot)
85	$(Q)$(MAKE) $(clean)=$(boot)/dts
86
87define archhelp
88  echo  '* Image.gz      - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)'
89  echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
90  echo  '* dtbs          - Build device tree blobs for enabled boards'
91  echo  '  dtbs_install  - Install dtbs to $(INSTALL_DTBS_PATH)'
92  echo  '  install       - Install uncompressed kernel'
93  echo  '  zinstall      - Install compressed kernel'
94  echo  '                  Install using (your) ~/bin/installkernel or'
95  echo  '                  (distribution) /sbin/installkernel or'
96  echo  '                  install to $$(INSTALL_PATH) and run lilo'
97endef
98