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 KBUILD_DEFCONFIG := defconfig
20 # Check for binutils support for specific extensions
21 lseinstr := $(call as-instr,.arch_extension lse,-DCONFIG_AS_LSE=1)
23 ifeq ($(CONFIG_ARM64_LSE_ATOMICS), y)
25 $(warning LSE atomics not supported by binutils)
29 KBUILD_CFLAGS += -mgeneral-regs-only $(lseinstr)
30 KBUILD_CFLAGS += -fno-pic
31 KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads)
32 KBUILD_AFLAGS += $(lseinstr)
34 ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
35 KBUILD_CPPFLAGS += -mbig-endian
39 KBUILD_CPPFLAGS += -mlittle-endian
44 CHECKFLAGS += -D__aarch64__
46 ifeq ($(CONFIG_ARM64_ERRATUM_843419), y)
47 KBUILD_CFLAGS_MODULE += -mcmodel=large
51 head-y := arch/arm64/kernel/head.o
53 # The byte offset of the kernel image in RAM from the start of RAM.
54 ifeq ($(CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET), y)
55 TEXT_OFFSET := $(shell awk 'BEGIN {srand(); printf "0x%03x000\n", int(512 * rand())}')
57 TEXT_OFFSET := 0x00080000
60 # KASAN_SHADOW_OFFSET = VA_START + (1 << (VA_BITS - 3)) - (1 << 61)
61 # in 32-bit arithmetic
62 KASAN_SHADOW_OFFSET := $(shell printf "0x%08x00000000\n" $$(( \
63 (0xffffffff & (-1 << ($(CONFIG_ARM64_VA_BITS) - 32))) \
64 + (1 << ($(CONFIG_ARM64_VA_BITS) - 32 - 3)) \
65 - (1 << (64 - 32 - 3)) )) )
67 export TEXT_OFFSET GZFLAGS
69 core-y += arch/arm64/kernel/ arch/arm64/mm/
70 core-$(CONFIG_NET) += arch/arm64/net/
71 core-$(CONFIG_KVM) += arch/arm64/kvm/
72 core-$(CONFIG_XEN) += arch/arm64/xen/
73 core-$(CONFIG_CRYPTO) += arch/arm64/crypto/
74 libs-y := arch/arm64/lib/ $(libs-y)
75 core-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a
77 # Default target when executing plain make
78 ifeq ($(CONFIG_BUILD_ARM64_APPENDED_DTB_IMAGE),y)
79 KBUILD_IMAGE := Image.gz-dtb
81 KBUILD_IMAGE := Image.gz
86 all: $(KBUILD_IMAGE) $(KBUILD_DTBS)
88 boot := arch/arm64/boot
91 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
94 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
96 zinstall install: vmlinux
97 $(Q)$(MAKE) $(build)=$(boot) $@
100 $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
102 PHONY += dtbs dtbs_install
104 dtbs: prepare scripts
105 $(Q)$(MAKE) $(build)=$(boot)/dts
108 $(Q)$(MAKE) $(dtbinst)=$(boot)/dts
110 Image.gz-dtb: vmlinux scripts dtbs
111 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
113 PHONY += vdso_install
115 $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@
117 # We use MRPROPER_FILES and CLEAN_FILES now
119 $(Q)$(MAKE) $(clean)=$(boot)
120 $(Q)$(MAKE) $(clean)=$(boot)/dts
123 echo '* Image.gz - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)'
124 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
125 echo '* dtbs - Build device tree blobs for enabled boards'
126 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
127 echo ' install - Install uncompressed kernel'
128 echo ' zinstall - Install compressed kernel'
129 echo ' Install using (your) ~/bin/installkernel or'
130 echo ' (distribution) /sbin/installkernel or'
131 echo ' install to $$(INSTALL_PATH) and run lilo'
135 $(Q)$(srctree)/scripts/mkkrnlimg $(objtree)/arch/arm64/boot/Image $(objtree)/kernel.img >/dev/null
136 @echo ' Image: kernel.img is ready'
138 LOGO := $(notdir $(wildcard $(srctree)/logo.bmp))
139 LOGO_KERNEL := $(notdir $(wildcard $(srctree)/logo_kernel.bmp))
140 %.img: rockchip/%.dtb kernel.img $(LOGO) $(LOGO_KERNEL)
141 $(Q) if [ -f $(srctree)/$(LOGO) -a "$(srctree)" != "$(objtree)" ]; then cp -a $(srctree)/$(LOGO) $(objtree)/; fi
142 $(Q) if [ -f $(srctree)/$(LOGO_KERNEL) -a "$(srctree)" != "$(objtree)" ]; then cp -a $(srctree)/$(LOGO_KERNEL) $(objtree)/; fi
143 $(Q)$(srctree)/scripts/resource_tool $(objtree)/arch/arm64/boot/dts/rockchip/$*.dtb $(LOGO) $(LOGO_KERNEL)
144 @echo ' Image: resource.img (with $*.dtb $(LOGO) $(LOGO_KERNEL)) is ready'