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_AFLAGS += $(lseinstr)
33 ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
34 KBUILD_CPPFLAGS += -mbig-endian
38 KBUILD_CPPFLAGS += -mlittle-endian
43 CHECKFLAGS += -D__aarch64__
45 ifeq ($(CONFIG_ARM64_ERRATUM_843419), y)
46 KBUILD_CFLAGS_MODULE += -mcmodel=large
50 head-y := arch/arm64/kernel/head.o
52 # The byte offset of the kernel image in RAM from the start of RAM.
53 ifeq ($(CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET), y)
54 TEXT_OFFSET := $(shell awk 'BEGIN {srand(); printf "0x%03x000\n", int(512 * rand())}')
56 TEXT_OFFSET := 0x00080000
59 # KASAN_SHADOW_OFFSET = VA_START + (1 << (VA_BITS - 3)) - (1 << 61)
60 # in 32-bit arithmetic
61 KASAN_SHADOW_OFFSET := $(shell printf "0x%08x00000000\n" $$(( \
62 (0xffffffff & (-1 << ($(CONFIG_ARM64_VA_BITS) - 32))) \
63 + (1 << ($(CONFIG_ARM64_VA_BITS) - 32 - 3)) \
64 - (1 << (64 - 32 - 3)) )) )
66 export TEXT_OFFSET GZFLAGS
68 core-y += arch/arm64/kernel/ arch/arm64/mm/
69 core-$(CONFIG_NET) += arch/arm64/net/
70 core-$(CONFIG_KVM) += arch/arm64/kvm/
71 core-$(CONFIG_XEN) += arch/arm64/xen/
72 core-$(CONFIG_CRYPTO) += arch/arm64/crypto/
73 libs-y := arch/arm64/lib/ $(libs-y)
74 core-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a
76 # Default target when executing plain make
77 KBUILD_IMAGE := Image.gz
80 all: $(KBUILD_IMAGE) $(KBUILD_DTBS)
82 boot := arch/arm64/boot
85 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
88 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
90 zinstall install: vmlinux
91 $(Q)$(MAKE) $(build)=$(boot) $@
94 $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
96 PHONY += dtbs dtbs_install
99 $(Q)$(MAKE) $(build)=$(boot)/dts
102 $(Q)$(MAKE) $(dtbinst)=$(boot)/dts
104 PHONY += vdso_install
106 $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@
108 # We use MRPROPER_FILES and CLEAN_FILES now
110 $(Q)$(MAKE) $(clean)=$(boot)
111 $(Q)$(MAKE) $(clean)=$(boot)/dts
114 echo '* Image.gz - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)'
115 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
116 echo '* dtbs - Build device tree blobs for enabled boards'
117 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
118 echo ' install - Install uncompressed kernel'
119 echo ' zinstall - Install compressed kernel'
120 echo ' Install using (your) ~/bin/installkernel or'
121 echo ' (distribution) /sbin/installkernel or'
122 echo ' install to $$(INSTALL_PATH) and run lilo'