Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

#

# kbuild file for usr/ - including initramfs image

#

klibcdirs:;

PHONY += klibcdirs

# Generate builtin.o based on initramfs_data.o

obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data.o

# initramfs_data.o contains the initramfs_data.cpio.gz image.

# The image is included using .incbin, a dependency which is not

# tracked automatically.

$(obj)/initramfs_data.o: $(obj)/initramfs_data.cpio.gz FORCE

#####

# Generate the initramfs cpio archive

hostprogs-y := gen_init_cpio

initramfs   := $(CONFIG_SHELL) $(srctree)/scripts/gen_initramfs_list.sh

ramfs-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.gz.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 -l

ifneq ($(wildcard $(obj)/.initramfs_data.cpio.gz.d),)

        include $(obj)/.initramfs_data.cpio.gz.d

endif

quiet_cmd_initfs = GEN     $@

      cmd_initfs = $(initramfs) -o $@ $(ramfs-args) $(ramfs-input)

targets := initramfs_data.cpio.gz

# do not try to update files included in initramfs

$(deps_initramfs): ;

$(deps_initramfs): klibcdirs

# We rebuild initramfs_data.cpio.gz if:

# 1) Any included file is newer then initramfs_data.cpio.gz

# 2) There are changes in which files are included (added or deleted)

# 3) If gen_init_cpio are newer than initramfs_data.cpio.gz

# 4) arguments to gen_initramfs.sh changes

$(obj)/initramfs_data.cpio.gz: $(obj)/gen_init_cpio $(deps_initramfs) klibcdirs

        $(Q)$(initramfs) -l $(ramfs-input) > $(obj)/.initramfs_data.cpio.gz.d

        $(call if_changed,initfs)