1# 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) 15OBJCOPYFLAGS :=-O binary -R .note -R .note.gnu.build-id -R .comment -S 16GZFLAGS :=-9 17 18KBUILD_DEFCONFIG := defconfig 19 20# Check for binutils support for specific extensions 21lseinstr := $(call as-instr,.arch_extension lse,-DCONFIG_AS_LSE=1) 22 23ifeq ($(CONFIG_ARM64_LSE_ATOMICS), y) 24 ifeq ($(lseinstr),) 25$(warning LSE atomics not supported by binutils) 26 endif 27endif 28 29KBUILD_CFLAGS += -mgeneral-regs-only $(lseinstr) 30KBUILD_AFLAGS += $(lseinstr) 31 32ifeq ($(CONFIG_CPU_BIG_ENDIAN), y) 33KBUILD_CPPFLAGS += -mbig-endian 34AS += -EB 35LD += -EB 36else 37KBUILD_CPPFLAGS += -mlittle-endian 38AS += -EL 39LD += -EL 40endif 41 42CHECKFLAGS += -D__aarch64__ 43 44ifeq ($(CONFIG_ARM64_ERRATUM_843419), y) 45KBUILD_CFLAGS_MODULE += -mcmodel=large 46endif 47 48# Default value 49head-y := arch/arm64/kernel/head.o 50 51# The byte offset of the kernel image in RAM from the start of RAM. 52ifeq ($(CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET), y) 53TEXT_OFFSET := $(shell awk 'BEGIN {srand(); printf "0x%03x000\n", int(512 * rand())}') 54else 55TEXT_OFFSET := 0x00080000 56endif 57 58export TEXT_OFFSET GZFLAGS 59 60core-y += arch/arm64/kernel/ arch/arm64/mm/ 61core-$(CONFIG_NET) += arch/arm64/net/ 62core-$(CONFIG_KVM) += arch/arm64/kvm/ 63core-$(CONFIG_XEN) += arch/arm64/xen/ 64core-$(CONFIG_CRYPTO) += arch/arm64/crypto/ 65libs-y := arch/arm64/lib/ $(libs-y) 66core-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a 67 68# Default target when executing plain make 69KBUILD_IMAGE := Image.gz 70KBUILD_DTBS := dtbs 71 72all: $(KBUILD_IMAGE) $(KBUILD_DTBS) 73 74boot := arch/arm64/boot 75 76Image: vmlinux 77 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 78 79Image.%: vmlinux 80 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 81 82zinstall install: vmlinux 83 $(Q)$(MAKE) $(build)=$(boot) $@ 84 85%.dtb: scripts 86 $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@ 87 88PHONY += dtbs dtbs_install 89 90dtbs: prepare scripts 91 $(Q)$(MAKE) $(build)=$(boot)/dts 92 93dtbs_install: 94 $(Q)$(MAKE) $(dtbinst)=$(boot)/dts 95 96PHONY += vdso_install 97vdso_install: 98 $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@ 99 100# We use MRPROPER_FILES and CLEAN_FILES now 101archclean: 102 $(Q)$(MAKE) $(clean)=$(boot) 103 $(Q)$(MAKE) $(clean)=$(boot)/dts 104 105define archhelp 106 echo '* Image.gz - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)' 107 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)' 108 echo '* dtbs - Build device tree blobs for enabled boards' 109 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)' 110 echo ' install - Install uncompressed kernel' 111 echo ' zinstall - Install compressed kernel' 112 echo ' Install using (your) ~/bin/installkernel or' 113 echo ' (distribution) /sbin/installkernel or' 114 echo ' install to $$(INSTALL_PATH) and run lilo' 115endef 116