## kbuild file for usr/ - including initramfs image# klibcdirs:;PHONY += klibcdirs  # Bzip2suffix_$(CONFIG_RD_BZIP2)  = .bz2 # Lzmasuffix_$(CONFIG_RD_LZMA)   = .lzma # XZsuffix_$(CONFIG_RD_XZ)     = .xz # Lzosuffix_$(CONFIG_RD_LZO)    = .lzo # Lz4suffix_$(CONFIG_RD_LZ4)    = .lz4 # Gzipsuffix_$(CONFIG_RD_GZIP)   = .gz AFLAGS_initramfs_data.o += -DINITRAMFS_IMAGE="usr/initramfs_data.cpio$(suffix_y)" # Generate builtin.o based on initramfs_data.oobj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data.o # initramfs_data.o contains the compressed initramfs_data.cpio image.# The image is included using .incbin, a dependency which is not# tracked automatically.$(obj)/initramfs_data.o: $(obj)/initramfs_data.cpio$(suffix_y) FORCE ###### Generate the initramfs cpio archive hostprogs-y := gen_init_cpioinitramfs   := $(CONFIG_SHELL) $(srctree)/scripts/gen_initramfs_list.shramfs-input := $(if $(filter-out "",$(CONFIG_INITRAMFS_SOURCE)), \			$(shell echo $(CONFIG_INITRAMFS_SOURCE)),-d)ramfs-args  := \        $(if $(CONFIG_INITRAMFS_ROOT_UID), -u $(CONFIG_INITRAMFS_ROOT_UID)) \        $(if $(CONFIG_INITRAMFS_ROOT_GID), -g $(CONFIG_INITRAMFS_ROOT_GID)) # .initramfs_data.cpio.d is used to identify all files included# in initramfs and to detect if any files are added/removed.# Removed files are identified by directory timestamp being updated# The dependency list is generated by gen_initramfs.sh -lifneq ($(wildcard $(obj)/.initramfs_data.cpio.d),)	include $(obj)/.initramfs_data.cpio.dendif quiet_cmd_initfs = GEN     $@      cmd_initfs = $(initramfs) -o $@ $(ramfs-args) $(ramfs-input) targets := initramfs_data.cpio.gz initramfs_data.cpio.bz2 \	initramfs_data.cpio.lzma initramfs_data.cpio.xz \	initramfs_data.cpio.lzo initramfs_data.cpio.lz4 \	initramfs_data.cpio# do not try to update files included in initramfs$(deps_initramfs): ; $(deps_initramfs): klibcdirs# We rebuild initramfs_data.cpio if:# 1) Any included file is newer then initramfs_data.cpio# 2) There are changes in which files are included (added or deleted)# 3) If gen_init_cpio are newer than initramfs_data.cpio# 4) arguments to gen_initramfs.sh changes$(obj)/initramfs_data.cpio$(suffix_y): $(obj)/gen_init_cpio $(deps_initramfs) klibcdirs	$(Q)$(initramfs) -l $(ramfs-input) > $(obj)/.initramfs_data.cpio.d	$(call if_changed,initfs)