| 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 | |
| 13 | LDFLAGS_vmlinux :=-p --no-undefined -X |
| 14 | CPPFLAGS_vmlinux.lds = -DTEXT_OFFSET=$(TEXT_OFFSET) |
| 15 | OBJCOPYFLAGS :=-O binary -R .note -R .note.gnu.build-id -R .comment -S |
| 16 | GZFLAGS :=-9 |
| 17 | |
| 18 | ifneq ($(CONFIG_RELOCATABLE),) |
| 19 | LDFLAGS_vmlinux += -pie |
| 20 | endif |
| 21 | |
| 22 | KBUILD_DEFCONFIG := defconfig |
| 23 | |
| 24 | # Check for binutils support for specific extensions |
| 25 | lseinstr := $(call as-instr,.arch_extension lse,-DCONFIG_AS_LSE=1) |
| 26 | |
| 27 | ifeq ($(CONFIG_ARM64_LSE_ATOMICS), y) |
| 28 | ifeq ($(lseinstr),) |
| 29 | $(warning LSE atomics not supported by binutils) |
| 30 | endif |
| 31 | endif |
| 32 | |
| 33 | KBUILD_CFLAGS += -mgeneral-regs-only $(lseinstr) |
| 34 | KBUILD_CFLAGS += -fno-asynchronous-unwind-tables |
| 35 | KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads) |
| 36 | KBUILD_AFLAGS += $(lseinstr) |
| 37 | |
| 38 | ifeq ($(CONFIG_CPU_BIG_ENDIAN), y) |
| 39 | KBUILD_CPPFLAGS += -mbig-endian |
| 40 | AS += -EB |
| 41 | LD += -EB |
| 42 | else |
| 43 | KBUILD_CPPFLAGS += -mlittle-endian |
| 44 | AS += -EL |
| 45 | LD += -EL |
| 46 | endif |
| 47 | |
| 48 | CHECKFLAGS += -D__aarch64__ |
| 49 | |
| 50 | ifeq ($(CONFIG_ARM64_MODULE_CMODEL_LARGE), y) |
| 51 | KBUILD_CFLAGS_MODULE += -mcmodel=large |
| 52 | endif |
| 53 | |
| 54 | ifeq ($(CONFIG_ARM64_MODULE_PLTS),y) |
| 55 | KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/arm64/kernel/module.lds |
| 56 | endif |
| 57 | |
| 58 | # Default value |
| 59 | head-y := arch/arm64/kernel/head.o |
| 60 | |
| 61 | # The byte offset of the kernel image in RAM from the start of RAM. |
| 62 | ifeq ($(CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET), y) |
| 63 | TEXT_OFFSET := $(shell awk 'BEGIN {srand(); printf "0x%03x000\n", int(512 * rand())}') |
| 64 | else |
| 65 | TEXT_OFFSET := 0x00080000 |
| 66 | endif |
| 67 | |
| 68 | # KASAN_SHADOW_OFFSET = VA_START + (1 << (VA_BITS - 3)) - (1 << 61) |
| 69 | # in 32-bit arithmetic |
| 70 | KASAN_SHADOW_OFFSET := $(shell printf "0x%08x00000000\n" $$(( \ |
| 71 | (0xffffffff & (-1 << ($(CONFIG_ARM64_VA_BITS) - 32))) \ |
| 72 | + (1 << ($(CONFIG_ARM64_VA_BITS) - 32 - 3)) \ |
| 73 | - (1 << (64 - 32 - 3)) )) ) |
| 74 | |
| 75 | export TEXT_OFFSET GZFLAGS |
| 76 | |
| 77 | core-y += arch/arm64/kernel/ arch/arm64/mm/ |
| 78 | core-$(CONFIG_NET) += arch/arm64/net/ |
| 79 | core-$(CONFIG_KVM) += arch/arm64/kvm/ |
| 80 | core-$(CONFIG_XEN) += arch/arm64/xen/ |
| 81 | core-$(CONFIG_CRYPTO) += arch/arm64/crypto/ |
| 82 | libs-y := arch/arm64/lib/ $(libs-y) |
| 83 | core-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a |
| 84 | |
| 85 | # Default target when executing plain make |
| 86 | KBUILD_IMAGE := Image.gz |
| 87 | KBUILD_DTBS := dtbs |
| 88 | |
| 89 | all: $(KBUILD_IMAGE) $(KBUILD_DTBS) |
| 90 | |
| 91 | boot := arch/arm64/boot |
| 92 | |
| 93 | Image: vmlinux |
| 94 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
| 95 | |
| 96 | Image.%: vmlinux |
| 97 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
| 98 | |
| 99 | zinstall install: |
| 100 | $(Q)$(MAKE) $(build)=$(boot) $@ |
| 101 | |
| 102 | %.dtb: scripts |
| 103 | $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@ |
| 104 | |
| 105 | PHONY += dtbs dtbs_install |
| 106 | |
| 107 | dtbs: prepare scripts |
| 108 | $(Q)$(MAKE) $(build)=$(boot)/dts |
| 109 | |
| 110 | dtbs_install: |
| 111 | $(Q)$(MAKE) $(dtbinst)=$(boot)/dts |
| 112 | |
| 113 | PHONY += vdso_install |
| 114 | vdso_install: |
| 115 | $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@ |
| 116 | |
| 117 | # We use MRPROPER_FILES and CLEAN_FILES now |
| 118 | archclean: |
| 119 | $(Q)$(MAKE) $(clean)=$(boot) |
| 120 | $(Q)$(MAKE) $(clean)=$(boot)/dts |
| 121 | |
| 122 | define archhelp |
| 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' |
| 132 | endef |