xref: /openbmc/linux/arch/arm64/Makefile (revision ca460cc2) 
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
33CHECKFLAGS	+= -D__aarch64__
34
35# Default value
36head-y		:= arch/arm64/kernel/head.o
37
38# The byte offset of the kernel image in RAM from the start of RAM.
39ifeq ($(CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET), y)
40TEXT_OFFSET := $(shell awk 'BEGIN {srand(); printf "0x%03x000\n", int(512 * rand())}')
41else
42TEXT_OFFSET := 0x00080000
43endif
44
45export	TEXT_OFFSET GZFLAGS
46
47core-y		+= arch/arm64/kernel/ arch/arm64/mm/
48core-$(CONFIG_NET) += arch/arm64/net/
49core-$(CONFIG_KVM) += arch/arm64/kvm/
50core-$(CONFIG_XEN) += arch/arm64/xen/
51core-$(CONFIG_CRYPTO) += arch/arm64/crypto/
52libs-y		:= arch/arm64/lib/ $(libs-y)
53libs-y		+= $(LIBGCC)
54libs-$(CONFIG_EFI_STUB) += drivers/firmware/efi/libstub/
55
56# Default target when executing plain make
57KBUILD_IMAGE	:= Image.gz
58KBUILD_DTBS	:= dtbs
59
60all:	$(KBUILD_IMAGE) $(KBUILD_DTBS)
61
62boot := arch/arm64/boot
63
64Image Image.gz: vmlinux
65	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
66
67zinstall install: vmlinux
68	$(Q)$(MAKE) $(build)=$(boot) $@
69
70%.dtb: scripts
71	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
72
73dtbs: scripts
74	$(Q)$(MAKE) $(build)=$(boot)/dts dtbs
75
76PHONY += vdso_install
77vdso_install:
78	$(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@
79
80# We use MRPROPER_FILES and CLEAN_FILES now
81archclean:
82	$(Q)$(MAKE) $(clean)=$(boot)
83
84define archhelp
85  echo  '* Image.gz      - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)'
86  echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
87  echo  '* dtbs          - Build device tree blobs for enabled boards'
88  echo  '  install       - Install uncompressed kernel'
89  echo  '  zinstall      - Install compressed kernel'
90  echo  '                  Install using (your) ~/bin/installkernel or'
91  echo  '                  (distribution) /sbin/installkernel or'
92  echo  '                  install to $$(INSTALL_PATH) and run lilo'
93endef
94