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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)
Greg Hackmanna9c28642014-12-01 16:13:30 -080043KBUILD_CFLAGS += -fno-pic
Will Deaconc09d6a02015-02-03 16:14:13 +000044KBUILD_AFLAGS += $(lseinstr)
45
Will Deacona0974e62013-10-11 14:52:08 +010046ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
47KBUILD_CPPFLAGS += -mbig-endian
48AS += -EB
49LD += -EB
Michal Marekcfa88c72016-08-30 10:31:35 +020050UTS_MACHINE := aarch64_be
Will Deacona0974e62013-10-11 14:52:08 +010051else
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010052KBUILD_CPPFLAGS += -mlittle-endian
53AS += -EL
54LD += -EL
Michal Marekcfa88c72016-08-30 10:31:35 +020055UTS_MACHINE := aarch64
Will Deacona0974e62013-10-11 14:52:08 +010056endif
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010057
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010058CHECKFLAGS += -D__aarch64__
59
Ard Biesheuvelfd045f62015-11-24 12:37:35 +010060ifeq ($(CONFIG_ARM64_MODULE_CMODEL_LARGE), y)
Will Deaconb6dd8e02015-10-08 11:11:17 +010061KBUILD_CFLAGS_MODULE += -mcmodel=large
Will Deacondf057cc2015-03-17 12:15:02 +000062endif
63
Ard Biesheuvelfd045f62015-11-24 12:37:35 +010064ifeq ($(CONFIG_ARM64_MODULE_PLTS),y)
65KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/arm64/kernel/module.lds
66endif
67
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010068# Default value
69head-y := arch/arm64/kernel/head.o
70
71# The byte offset of the kernel image in RAM from the start of RAM.
Mark Rutlandda57a362014-06-24 16:51:37 +010072ifeq ($(CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET), y)
Mark Rutlandaed7eb82016-05-31 15:58:00 +010073TEXT_OFFSET := $(shell awk "BEGIN {srand(); printf \"0x%06x\n\", \
74 int(2 * 1024 * 1024 / (2 ^ $(CONFIG_ARM64_PAGE_SHIFT)) * \
75 rand()) * (2 ^ $(CONFIG_ARM64_PAGE_SHIFT))}")
Mark Rutlandda57a362014-06-24 16:51:37 +010076else
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010077TEXT_OFFSET := 0x00080000
Mark Rutlandda57a362014-06-24 16:51:37 +010078endif
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010079
Andrey Ryabinin39d114d2015-10-12 18:52:58 +030080# KASAN_SHADOW_OFFSET = VA_START + (1 << (VA_BITS - 3)) - (1 << 61)
81# in 32-bit arithmetic
82KASAN_SHADOW_OFFSET := $(shell printf "0x%08x00000000\n" $$(( \
83 (0xffffffff & (-1 << ($(CONFIG_ARM64_VA_BITS) - 32))) \
84 + (1 << ($(CONFIG_ARM64_VA_BITS) - 32 - 3)) \
85 - (1 << (64 - 32 - 3)) )) )
86
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010087export TEXT_OFFSET GZFLAGS
88
89core-y += arch/arm64/kernel/ arch/arm64/mm/
Zi Shen Lime54bcde2014-08-26 21:15:30 -070090core-$(CONFIG_NET) += arch/arm64/net/
Marc Zyngier62117532012-12-10 16:41:44 +000091core-$(CONFIG_KVM) += arch/arm64/kvm/
Catalin Marinas63917f02013-06-12 16:48:38 +010092core-$(CONFIG_XEN) += arch/arm64/xen/
Ard Biesheuvel2c988332014-03-06 16:23:33 +080093core-$(CONFIG_CRYPTO) += arch/arm64/crypto/
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010094libs-y := arch/arm64/lib/ $(libs-y)
Steve Capperad08fd42015-03-16 09:30:39 +000095core-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a
Catalin Marinas8c2c3df2012-04-20 14:45:54 +010096
97# Default target when executing plain make
Alex Ray911da232014-03-17 13:44:01 -070098ifeq ($(CONFIG_BUILD_ARM64_APPENDED_DTB_IMAGE),y)
Dmitry Shmidt4bdcc932017-03-28 13:30:18 -070099KBUILD_IMAGE := $(subst $\",,$(CONFIG_BUILD_ARM64_APPENDED_KERNEL_IMAGE_NAME))
Alex Ray911da232014-03-17 13:44:01 -0700100else
Rob Herring70f915a2012-12-03 17:17:21 -0600101KBUILD_IMAGE := Image.gz
Alex Ray911da232014-03-17 13:44:01 -0700102endif
103
Rob Herring70f915a2012-12-03 17:17:21 -0600104KBUILD_DTBS := dtbs
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100105
Puja Gupta22625ce2017-03-17 13:27:09 -0700106ifeq ($(CONFIG_BUILD_ARM64_DT_OVERLAY),y)
107export DTC_FLAGS := -@
108endif
109
Rob Herring70f915a2012-12-03 17:17:21 -0600110all: $(KBUILD_IMAGE) $(KBUILD_DTBS)
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100111
112boot := arch/arm64/boot
113
Olof Johansson0723c052015-07-16 21:26:16 +0100114Image: vmlinux
115 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
116
Masahiro Yamada9ca4e582016-06-21 10:44:00 +0900117Image.%: Image
Rob Herring70f915a2012-12-03 17:17:21 -0600118 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100119
Masahiro Yamada8684fa32016-02-19 15:05:50 +0900120zinstall install:
Rob Herring70f915a2012-12-03 17:17:21 -0600121 $(Q)$(MAKE) $(build)=$(boot) $@
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100122
Rob Herring70f915a2012-12-03 17:17:21 -0600123%.dtb: scripts
124 $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
125
Robert Richter862f4642014-08-29 14:17:02 +0200126PHONY += dtbs dtbs_install
Robert Richter9fb5e532014-09-03 15:29:24 +0200127
128dtbs: prepare scripts
Robert Richterd38726c2014-09-03 15:54:55 +0200129 $(Q)$(MAKE) $(build)=$(boot)/dts
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100130
Robert Richter9fb5e532014-09-03 15:29:24 +0200131dtbs_install:
132 $(Q)$(MAKE) $(dtbinst)=$(boot)/dts
133
Haojian Zhuange23ef5f2016-04-22 17:23:29 +0800134Image-dtb Image.gz-dtb: vmlinux scripts dtbs
Alex Ray911da232014-03-17 13:44:01 -0700135 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
136
Kyle McMartin3c017422013-06-16 20:32:44 +0100137PHONY += vdso_install
138vdso_install:
139 $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@
140
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100141# We use MRPROPER_FILES and CLEAN_FILES now
142archclean:
143 $(Q)$(MAKE) $(clean)=$(boot)
Jungseok Leec7c52e42015-01-19 14:57:00 +0000144 $(Q)$(MAKE) $(clean)=$(boot)/dts
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100145
Kevin Brodskya66649d2016-05-12 17:39:15 +0100146# We need to generate vdso-offsets.h before compiling certain files in kernel/.
147# In order to do that, we should use the archprepare target, but we can't since
148# asm-offsets.h is included in some files used to generate vdso-offsets.h, and
149# asm-offsets.h is built in prepare0, for which archprepare is a dependency.
150# Therefore we need to generate the header after prepare0 has been made, hence
151# this hack.
152prepare: vdso_prepare
153vdso_prepare: prepare0
154 $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso include/generated/vdso-offsets.h
155
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100156define archhelp
157 echo '* Image.gz - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)'
158 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
Rob Herring70f915a2012-12-03 17:17:21 -0600159 echo '* dtbs - Build device tree blobs for enabled boards'
Robert Richter862f4642014-08-29 14:17:02 +0200160 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
Catalin Marinas8c2c3df2012-04-20 14:45:54 +0100161 echo ' install - Install uncompressed kernel'
162 echo ' zinstall - Install compressed kernel'
163 echo ' Install using (your) ~/bin/installkernel or'
164 echo ' (distribution) /sbin/installkernel or'
165 echo ' install to $$(INSTALL_PATH) and run lilo'
166endef