diff options
Diffstat (limited to 'usr/Makefile')
| -rw-r--r-- | usr/Makefile | 113 |
1 files changed, 61 insertions, 52 deletions
diff --git a/usr/Makefile b/usr/Makefile index 248d5551029..e767f019acc 100644 --- a/usr/Makefile +++ b/usr/Makefile @@ -1,65 +1,74 @@ +# +# kbuild file for usr/ - including initramfs image +# -obj-y := initramfs_data.o +klibcdirs:; +PHONY += klibcdirs -hostprogs-y := gen_init_cpio -clean-files := initramfs_data.cpio.gz initramfs_list +# Bzip2 +suffix_$(CONFIG_RD_BZIP2) = .bz2 -# initramfs_data.o contains the initramfs_data.cpio.gz image. -# The image is included using .incbin, a dependency which is not -# tracked automatically. -$(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) $(quotefixed_initramfs_source) +# Lzma +suffix_$(CONFIG_RD_LZMA) = .lzma -$(obj)/initramfs_list: FORCE - $(call filechk,initramfs_list) +# XZ +suffix_$(CONFIG_RD_XZ) = .xz -quiet_cmd_cpio = CPIO $@ - cmd_cpio = ./$< $(obj)/initramfs_list > $@ +# Lzo +suffix_$(CONFIG_RD_LZO) = .lzo +# Lz4 +suffix_$(CONFIG_RD_LZ4) = .lz4 -# Check if the INITRAMFS_SOURCE is a cpio archive -ifneq (,$(findstring .cpio,$(quotefixed_initramfs_source))) +# Gzip +suffix_$(CONFIG_RD_GZIP) = .gz -# 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 += $(quotefixed_initramfs_source) - -else +AFLAGS_initramfs_data.o += -DINITRAMFS_IMAGE="usr/initramfs_data.cpio$(suffix_y)" -# 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 = $(obj)/initramfs_data.cpio +# Generate builtin.o based on initramfs_data.o +obj-$(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_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 $(CONFIG_INITRAMFS_ROOT_GID)) + +# .initramfs_data.cpio.d is used to identify all files included +# in initramfs and to detect if any files are added/removed. +# Removed files are identified by directory timestamp being updated +# The dependency list is generated by gen_initramfs.sh -l +ifneq ($(wildcard $(obj)/.initramfs_data.cpio.d),) + include $(obj)/.initramfs_data.cpio.d endif - -$(obj)/initramfs_data.cpio.gz: $(initramfs_data_cpio) FORCE - $(call if_changed,gzip) - -targets += initramfs_data.cpio.gz - +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) |