# SPDX-License-Identifier: GPL-2.0## kbuild file for usr/ - including initramfs image# klibcdirs:;PHONY += klibcdirs suffix_y = $(subst $\",,$(CONFIG_INITRAMFS_COMPRESSION))datafile_y = initramfs_data.cpio$(suffix_y)datafile_d_y = .$(datafile_y).dAFLAGS_initramfs_data.o += -DINITRAMFS_IMAGE="usr/$(datafile_y)"  # Generate builtin.o based on initramfs_data.oobj-$(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: $(obj)/$(datafile_y) FORCE ###### Generate the initramfs cpio archive hostprogs-y := gen_init_cpioinitramfs   := $(CONFIG_SHELL) $(srctree)/$(src)/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)) # $(datafile_d_y) is used to identify all files included# in initramfs and to detect if any files are added/removed.# Removed files are identified by directory timestamp being updated# The dependency list is generated by gen_initramfs.sh -lifneq ($(wildcard $(obj)/$(datafile_d_y)),)	include $(obj)/$(datafile_d_y)endif quiet_cmd_initfs = GEN     $@      cmd_initfs = $(initramfs) -o $@ $(ramfs-args) $(ramfs-input) targets := $(datafile_y) # do not try to update files included in initramfs$(deps_initramfs): ; $(deps_initramfs): klibcdirs# We rebuild initramfs_data.cpio if:# 1) Any included file is newer than initramfs_data.cpio# 2) There are changes in which files are included (added or deleted)# 3) If gen_init_cpio are newer than initramfs_data.cpio# 4) Arguments to gen_initramfs.sh changes$(obj)/$(datafile_y): $(obj)/gen_init_cpio $(deps_initramfs) klibcdirs	$(Q)$(initramfs) -l $(ramfs-input) > $(obj)/$(datafile_d_y)	$(call if_changed,initfs)