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Catalin Marinas8c2c3df2012-04-20 14:45:54 +01001#
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=$(TEXT_OFFSET)
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010015GZFLAGS :=-9
16
Ard Biesheuvel1e48ef72016-01-26 09:13:44 +010017ifneq ($(CONFIG_RELOCATABLE),)
Ard Biesheuvelb9dce7f2016-10-20 11:12:57 +010018LDFLAGS_vmlinux += -pie -shared -Bsymbolic
Ard Biesheuvel1e48ef72016-01-26 09:13:44 +010019endif
20
Will Deacon6ffe9922016-08-22 11:58:36 +010021ifeq ($(CONFIG_ARM64_ERRATUM_843419),y)
22 ifeq ($(call ld-option, --fix-cortex-a53-843419),)
23$(warning ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum)
24 else
25LDFLAGS_vmlinux += --fix-cortex-a53-843419
26 endif
27endif
28
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010029KBUILD_DEFCONFIG := defconfig
30
Will Deaconc09d6a02015-02-03 16:14:13 +000031# Check for binutils support for specific extensions
32lseinstr := $(call as-instr,.arch_extension lse,-DCONFIG_AS_LSE=1)
33
34ifeq ($(CONFIG_ARM64_LSE_ATOMICS), y)
35 ifeq ($(lseinstr),)
36$(warning LSE atomics not supported by binutils)
37 endif
38endif
39
40KBUILD_CFLAGS += -mgeneral-regs-only $(lseinstr)
William Cohen728dabd2016-01-21 22:56:26 -050041KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
dann frazier67dfa172016-01-25 16:52:16 -070042KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads)
Will Deaconc09d6a02015-02-03 16:14:13 +000043KBUILD_AFLAGS += $(lseinstr)
44
Will Deacona0974e62013-10-11 14:52:08 +010045ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
46KBUILD_CPPFLAGS += -mbig-endian
47AS += -EB
48LD += -EB
Michal Marekcfa88c72016-08-30 10:31:35 +020049UTS_MACHINE := aarch64_be
Will Deacona0974e62013-10-11 14:52:08 +010050else
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010051KBUILD_CPPFLAGS += -mlittle-endian
52AS += -EL
53LD += -EL
Michal Marekcfa88c72016-08-30 10:31:35 +020054UTS_MACHINE := aarch64
Will Deacona0974e62013-10-11 14:52:08 +010055endif
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010056
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010057CHECKFLAGS += -D__aarch64__
58
Ard Biesheuvelfd045f62015-11-24 12:37:35 +010059ifeq ($(CONFIG_ARM64_MODULE_CMODEL_LARGE), y)
Will Deaconb6dd8e02015-10-08 11:11:17 +010060KBUILD_CFLAGS_MODULE += -mcmodel=large
Will Deacondf057cc2015-03-17 12:15:02 +000061endif
62
Ard Biesheuvelfd045f62015-11-24 12:37:35 +010063ifeq ($(CONFIG_ARM64_MODULE_PLTS),y)
64KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/arm64/kernel/module.lds
65endif
66
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010067# Default value
68head-y := arch/arm64/kernel/head.o
69
70# The byte offset of the kernel image in RAM from the start of RAM.
Mark Rutlandda57a362014-06-24 16:51:37 +010071ifeq ($(CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET), y)
Mark Rutlandaed7eb82016-05-31 15:58:00 +010072TEXT_OFFSET := $(shell awk "BEGIN {srand(); printf \"0x%06x\n\", \
73 int(2 * 1024 * 1024 / (2 ^ $(CONFIG_ARM64_PAGE_SHIFT)) * \
74 rand()) * (2 ^ $(CONFIG_ARM64_PAGE_SHIFT))}")
Mark Rutlandda57a362014-06-24 16:51:37 +010075else
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010076TEXT_OFFSET := 0x00080000
Mark Rutlandda57a362014-06-24 16:51:37 +010077endif
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010078
Andrey Ryabinin39d114d2015-10-12 18:52:58 +030079# KASAN_SHADOW_OFFSET = VA_START + (1 << (VA_BITS - 3)) - (1 << 61)
80# in 32-bit arithmetic
81KASAN_SHADOW_OFFSET := $(shell printf "0x%08x00000000\n" $$(( \
82 (0xffffffff & (-1 << ($(CONFIG_ARM64_VA_BITS) - 32))) \
83 + (1 << ($(CONFIG_ARM64_VA_BITS) - 32 - 3)) \
84 - (1 << (64 - 32 - 3)) )) )
85
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010086export TEXT_OFFSET GZFLAGS
87
88core-y += arch/arm64/kernel/ arch/arm64/mm/
Zi Shen Lime54bcde2014-08-26 21:15:30 -070089core-$(CONFIG_NET) += arch/arm64/net/
Marc Zyngier62117532012-12-10 16:41:44 +000090core-$(CONFIG_KVM) += arch/arm64/kvm/
Catalin Marinas63917f02013-06-12 16:48:38 +010091core-$(CONFIG_XEN) += arch/arm64/xen/
Ard Biesheuvel2c988332014-03-06 16:23:33 +080092core-$(CONFIG_CRYPTO) += arch/arm64/crypto/
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010093libs-y := arch/arm64/lib/ $(libs-y)
Steve Capperad08fd42015-03-16 09:30:39 +000094core-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010095
96# Default target when executing plain make
Rob Herring70f915a2012-12-03 17:17:21 -060097KBUILD_IMAGE := Image.gz
98KBUILD_DTBS := dtbs
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010099
Rob Herring70f915a2012-12-03 17:17:21 -0600100all: $(KBUILD_IMAGE) $(KBUILD_DTBS)
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100101
102boot := arch/arm64/boot
103
Olof Johansson0723c052015-07-16 21:26:16 +0100104Image: vmlinux
105 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
106
Masahiro Yamada9ca4e582016-06-21 10:44:00 +0900107Image.%: Image
Rob Herring70f915a2012-12-03 17:17:21 -0600108 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100109
Masahiro Yamada8684fa32016-02-19 15:05:50 +0900110zinstall install:
Rob Herring70f915a2012-12-03 17:17:21 -0600111 $(Q)$(MAKE) $(build)=$(boot) $@
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100112
Rob Herring70f915a2012-12-03 17:17:21 -0600113%.dtb: scripts
114 $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
115
Robert Richter862f4642014-08-29 14:17:02 +0200116PHONY += dtbs dtbs_install
Robert Richter9fb5e532014-09-03 15:29:24 +0200117
118dtbs: prepare scripts
Robert Richterd38726c2014-09-03 15:54:55 +0200119 $(Q)$(MAKE) $(build)=$(boot)/dts
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100120
Robert Richter9fb5e532014-09-03 15:29:24 +0200121dtbs_install:
122 $(Q)$(MAKE) $(dtbinst)=$(boot)/dts
123
Kyle McMartin3c017422013-06-16 20:32:44 +0100124PHONY += vdso_install
125vdso_install:
126 $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@
127
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100128# We use MRPROPER_FILES and CLEAN_FILES now
129archclean:
130 $(Q)$(MAKE) $(clean)=$(boot)
Jungseok Leec7c52e42015-01-19 14:57:00 +0000131 $(Q)$(MAKE) $(clean)=$(boot)/dts
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100132
Kevin Brodskya66649d2016-05-12 17:39:15 +0100133# We need to generate vdso-offsets.h before compiling certain files in kernel/.
134# In order to do that, we should use the archprepare target, but we can't since
135# asm-offsets.h is included in some files used to generate vdso-offsets.h, and
136# asm-offsets.h is built in prepare0, for which archprepare is a dependency.
137# Therefore we need to generate the header after prepare0 has been made, hence
138# this hack.
139prepare: vdso_prepare
140vdso_prepare: prepare0
141 $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso include/generated/vdso-offsets.h
142
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100143define archhelp
144 echo '* Image.gz - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)'
145 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
Rob Herring70f915a2012-12-03 17:17:21 -0600146 echo '* dtbs - Build device tree blobs for enabled boards'
Robert Richter862f4642014-08-29 14:17:02 +0200147 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100148 echo ' install - Install uncompressed kernel'
149 echo ' zinstall - Install compressed kernel'
150 echo ' Install using (your) ~/bin/installkernel or'
151 echo ' (distribution) /sbin/installkernel or'
152 echo ' install to $$(INSTALL_PATH) and run lilo'
153endef