1#
 2# kbuild file for usr - including initramfs image
 3#
 4
 5klibcdirs:;
 6PHONY += klibcdirs
 7
 
 
 
 
 8
 9# Bzip2
10suffix_$(CONFIG_RD_BZIP2)  = .bz2
11
12# Lzma
13suffix_$(CONFIG_RD_LZMA)   = .lzma
14
15# XZ
16suffix_$(CONFIG_RD_XZ)     = .xz
17
18# Lzo
19suffix_$(CONFIG_RD_LZO)    = .lzo
20
21# Lz4
22suffix_$(CONFIG_RD_LZ4)    = .lz4
23
24# Gzip
25suffix_$(CONFIG_RD_GZIP)   = .gz
26
27AFLAGS_initramfs_data.o += -DINITRAMFS_IMAGE="usr/initramfs_data.cpio$(suffix_y)"
28
29# Generate builtin.o based on initramfs_data.o
30obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data.o
31
32# initramfs_data.o contains the compressed initramfs_data.cpio image.
33# The image is included using .incbin, a dependency which is not
34# tracked automatically.
35$(obj)/initramfs_data.o: $(obj)/initramfs_data.cpio$(suffix_y) FORCE
36
37#####
38# Generate the initramfs cpio archive
39
40hostprogs-y := gen_init_cpio
41initramfs   := $(CONFIG_SHELL) $(srctree)/scripts/gen_initramfs_list.sh
42ramfs-input := $(if $(filter-out "",$(CONFIG_INITRAMFS_SOURCE)), \
43			$(shell echo $(CONFIG_INITRAMFS_SOURCE)),-d)
44ramfs-args  := \
45        $(if $(CONFIG_INITRAMFS_ROOT_UID), -u $(CONFIG_INITRAMFS_ROOT_UID)) \
46        $(if $(CONFIG_INITRAMFS_ROOT_GID), -g $(CONFIG_INITRAMFS_ROOT_GID))
47
48# .initramfs_data.cpio.d is used to identify all files included
49# in initramfs and to detect if any files are added/removed.
50# Removed files are identified by directory timestamp being updated
51# The dependency list is generated by gen_initramfs.sh -l
52ifneq ($(wildcard $(obj)/.initramfs_data.cpio.d),)
53	include $(obj)/.initramfs_data.cpio.d
54endif
55
56quiet_cmd_initfs = GEN     $@
57      cmd_initfs = $(initramfs) -o $@ $(ramfs-args) $(ramfs-input)
58
59targets := initramfs_data.cpio.gz initramfs_data.cpio.bz2 \
60	initramfs_data.cpio.lzma initramfs_data.cpio.xz \
61	initramfs_data.cpio.lzo initramfs_data.cpio.lz4 \
62	initramfs_data.cpio
63# do not try to update files included in initramfs
64$(deps_initramfs): ;
65
66$(deps_initramfs): klibcdirs
67# We rebuild initramfs_data.cpio if:
68# 1) Any included file is newer then initramfs_data.cpio
69# 2) There are changes in which files are included (added or deleted)
70# 3) If gen_init_cpio are newer than initramfs_data.cpio
71# 4) arguments to gen_initramfs.sh changes
72$(obj)/initramfs_data.cpio$(suffix_y): $(obj)/gen_init_cpio $(deps_initramfs) klibcdirs
73	$(Q)$(initramfs) -l $(ramfs-input) > $(obj)/.initramfs_data.cpio.d
74	$(call if_changed,initfs)

 1# SPDX-License-Identifier: GPL-2.0
 2#
 3# kbuild file for usr - including initramfs image
 4#
 5
 6klibcdirs:;
 7PHONY += klibcdirs
 8
 9suffix_y = $(subst $\",,$(CONFIG_INITRAMFS_COMPRESSION))
10datafile_y = initramfs_data.cpio$(suffix_y)
11datafile_d_y = .$(datafile_y).d
12AFLAGS_initramfs_data.o += -DINITRAMFS_IMAGE="usr/$(datafile_y)"
13
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
14
15# Generate builtin.o based on initramfs_data.o
16obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data.o
17
18# initramfs_data.o contains the compressed initramfs_data.cpio image.
19# The image is included using .incbin, a dependency which is not
20# tracked automatically.
21$(obj)/initramfs_data.o: $(obj)/$(datafile_y) FORCE
22
23#####
24# Generate the initramfs cpio archive
25
26hostprogs-y := gen_init_cpio
27initramfs   := $(CONFIG_SHELL) $(srctree)/scripts/gen_initramfs_list.sh
28ramfs-input := $(if $(filter-out "",$(CONFIG_INITRAMFS_SOURCE)), \
29			$(shell echo $(CONFIG_INITRAMFS_SOURCE)),-d)
30ramfs-args  := \
31        $(if $(CONFIG_INITRAMFS_ROOT_UID), -u $(CONFIG_INITRAMFS_ROOT_UID)) \
32        $(if $(CONFIG_INITRAMFS_ROOT_GID), -g $(CONFIG_INITRAMFS_ROOT_GID))
33
34# $(datafile_d_y) is used to identify all files included
35# in initramfs and to detect if any files are added/removed.
36# Removed files are identified by directory timestamp being updated
37# The dependency list is generated by gen_initramfs.sh -l
38ifneq ($(wildcard $(obj)/$(datafile_d_y)),)
39	include $(obj)/$(datafile_d_y)
40endif
41
42quiet_cmd_initfs = GEN     $@
43      cmd_initfs = $(initramfs) -o $@ $(ramfs-args) $(ramfs-input)
44
45targets := $(datafile_y)
46
 
 
47# do not try to update files included in initramfs
48$(deps_initramfs): ;
49
50$(deps_initramfs): klibcdirs
51# We rebuild initramfs_data.cpio if:
52# 1) Any included file is newer then initramfs_data.cpio
53# 2) There are changes in which files are included (added or deleted)
54# 3) If gen_init_cpio are newer than initramfs_data.cpio
55# 4) arguments to gen_initramfs.sh changes
56$(obj)/$(datafile_y): $(obj)/gen_init_cpio $(deps_initramfs) klibcdirs
57	$(Q)$(initramfs) -l $(ramfs-input) > $(obj)/$(datafile_d_y)
58	$(call if_changed,initfs)