obj-y := initramfs_data.o hostprogs-y := gen_init_cpio clean-files := initramfs_data.cpio.gz initramfs_list # 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 ifdef CONFIG_INITRAMFS_ROOT_UID gen_initramfs_args += -u $(CONFIG_INITRAMFS_ROOT_UID) endif ifdef CONFIG_INITRAMFS_ROOT_GID gen_initramfs_args += -g $(CONFIG_INITRAMFS_ROOT_GID) endif # The $(shell echo $(CONFIG_INITRAMFS_SOURCE)) is to remove the # gratuitous begin and end quotes from the Kconfig string type. # Internal, escaped quotes in the Kconfig string will loose the # escape and become active quotes. quotefixed_initramfs_source := $(shell echo $(CONFIG_INITRAMFS_SOURCE)) filechk_initramfs_list = $(CONFIG_SHELL) \ $(srctree)/scripts/gen_initramfs_list.sh $(gen_initramfs_args) $(quotefixed_initramfs_source) $(obj)/initramfs_list: $(obj)/Makefile FORCE $(call filechk,initramfs_list) quiet_cmd_cpio = CPIO $@ cmd_cpio = ./$< $(obj)/initramfs_list > $@ # Check if the INITRAMFS_SOURCE is a cpio archive ifneq (,$(findstring .cpio,$(quotefixed_initramfs_source))) # INITRAMFS_SOURCE has a cpio archive - verify that it's a single file ifneq (1,$(words $(quotefixed_initramfs_source))) $(error Only a single file may be specified in CONFIG_INITRAMFS_SOURCE (="$(quotefixed_initramfs_source)") when a cpio archive is directly specified.) endif # Now use the cpio archive directly initramfs_data_cpio = $(quotefixed_initramfs_source) targets += $(quotefixed_initramfs_source) else # INITRAMFS_SOURCE is not a cpio archive - create one $(obj)/initramfs_data.cpio: $(obj)/gen_init_cpio \ $(initramfs-y) $(obj)/initramfs_list FORCE $(call if_changed,cpio) targets += initramfs_data.cpio initramfs_data_cpio = $(obj)/initramfs_data.cpio endif $(obj)/initramfs_data.cpio.gz: $(initramfs_data_cpio) FORCE $(call if_changed,gzip) targets += initramfs_data.cpio.gz