4 # This file is included by the global makefile so that you can add your own
5 # architecture-specific flags and dependencies.
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
11 # Copyright (C) 1995-2001 by Russell King
13 LDFLAGS_vmlinux :=-p --no-undefined -X
14 CPPFLAGS_vmlinux.lds = -DTEXT_OFFSET=$(TEXT_OFFSET)
15 OBJCOPYFLAGS :=-O binary -R .note -R .note.gnu.build-id -R .comment -S
18 ifneq ($(CONFIG_RELOCATABLE),)
19 LDFLAGS_vmlinux += -pie -Bsymbolic
22 KBUILD_DEFCONFIG := defconfig
24 # Check for binutils support for specific extensions
25 lseinstr := $(call as-instr,.arch_extension lse,-DCONFIG_AS_LSE=1)
27 ifeq ($(CONFIG_ARM64_LSE_ATOMICS), y)
29 $(warning LSE atomics not supported by binutils)
33 KBUILD_CFLAGS += -mgeneral-regs-only $(lseinstr)
34 KBUILD_CFLAGS += -fno-pic
35 KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads)
36 KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
37 KBUILD_AFLAGS += $(lseinstr)
39 ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
40 KBUILD_CPPFLAGS += -mbig-endian
44 KBUILD_CPPFLAGS += -mlittle-endian
49 CHECKFLAGS += -D__aarch64__
51 ifeq ($(CONFIG_ARM64_MODULE_CMODEL_LARGE), y)
52 KBUILD_CFLAGS_MODULE += -mcmodel=large
55 ifeq ($(CONFIG_ARM64_MODULE_PLTS),y)
56 KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/arm64/kernel/module.lds
60 head-y := arch/arm64/kernel/head.o
62 # The byte offset of the kernel image in RAM from the start of RAM.
63 ifeq ($(CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET), y)
64 TEXT_OFFSET := $(shell awk 'BEGIN {srand(); printf "0x%03x000\n", int(512 * rand())}')
66 TEXT_OFFSET := 0x00080000
69 # KASAN_SHADOW_OFFSET = VA_START + (1 << (VA_BITS - 3)) - (1 << 61)
70 # in 32-bit arithmetic
71 KASAN_SHADOW_OFFSET := $(shell printf "0x%08x00000000\n" $$(( \
72 (0xffffffff & (-1 << ($(CONFIG_ARM64_VA_BITS) - 32))) \
73 + (1 << ($(CONFIG_ARM64_VA_BITS) - 32 - 3)) \
74 - (1 << (64 - 32 - 3)) )) )
76 export TEXT_OFFSET GZFLAGS
78 core-y += arch/arm64/kernel/ arch/arm64/mm/
79 core-$(CONFIG_NET) += arch/arm64/net/
80 core-$(CONFIG_KVM) += arch/arm64/kvm/
81 core-$(CONFIG_XEN) += arch/arm64/xen/
82 core-$(CONFIG_CRYPTO) += arch/arm64/crypto/
83 libs-y := arch/arm64/lib/ $(libs-y)
84 core-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a
86 # Default target when executing plain make
87 ifeq ($(CONFIG_BUILD_ARM64_APPENDED_DTB_IMAGE),y)
88 KBUILD_IMAGE := Image.gz-dtb
90 KBUILD_IMAGE := Image.gz
95 all: $(KBUILD_IMAGE) $(KBUILD_DTBS)
97 boot := arch/arm64/boot
100 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
103 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
105 zinstall install: vmlinux
106 $(Q)$(MAKE) $(build)=$(boot) $@
109 $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
111 PHONY += dtbs dtbs_install
113 dtbs: prepare scripts
114 $(Q)$(MAKE) $(build)=$(boot)/dts
117 $(Q)$(MAKE) $(dtbinst)=$(boot)/dts
119 Image-dtb Image.gz-dtb: vmlinux scripts dtbs
120 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
122 PHONY += vdso_install
124 $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@
126 # We use MRPROPER_FILES and CLEAN_FILES now
128 $(Q)$(MAKE) $(clean)=$(boot)
129 $(Q)$(MAKE) $(clean)=$(boot)/dts
132 echo '* Image.gz - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)'
133 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
134 echo '* dtbs - Build device tree blobs for enabled boards'
135 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
136 echo ' install - Install uncompressed kernel'
137 echo ' zinstall - Install compressed kernel'
138 echo ' Install using (your) ~/bin/installkernel or'
139 echo ' (distribution) /sbin/installkernel or'
140 echo ' install to $$(INSTALL_PATH) and run lilo'
144 $(Q)$(srctree)/scripts/mkkrnlimg $(objtree)/arch/arm64/boot/Image $(objtree)/kernel.img >/dev/null
145 @echo ' Image: kernel.img is ready'
147 LOGO := $(notdir $(wildcard $(srctree)/logo.bmp))
148 LOGO_KERNEL := $(notdir $(wildcard $(srctree)/logo_kernel.bmp))
149 %.img: rockchip/%.dtb kernel.img $(LOGO) $(LOGO_KERNEL)
150 $(Q) if [ -f $(srctree)/$(LOGO) -a "$(srctree)" != "$(objtree)" ]; then cp -a $(srctree)/$(LOGO) $(objtree)/; fi
151 $(Q) if [ -f $(srctree)/$(LOGO_KERNEL) -a "$(srctree)" != "$(objtree)" ]; then cp -a $(srctree)/$(LOGO_KERNEL) $(objtree)/; fi
152 $(Q)$(srctree)/scripts/resource_tool $(objtree)/arch/arm64/boot/dts/rockchip/$*.dtb $(LOGO) $(LOGO_KERNEL)
153 @echo ' Image: resource.img (with $*.dtb $(LOGO) $(LOGO_KERNEL)) is ready'