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gerrit-public.fairphone.software / kernel / msm-4.9 / d9a2545ac713e26ab8c8eee741d2da1626cebd6e / . / usr / Makefile
blob: 6faa444b7087bc947e431221d64c843db00b3177 [file] [log] [blame]
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]1#
2# kbuild file for usr/ - including initramfs image
3#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]4
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]5klibcdirs:;
Sam Ravnborg48f1f052006-07-23 19:37:44 +0200[diff] [blame]6PHONY += klibcdirs
7
Alain Knaffa26ee602009-01-07 00:10:27 -0800[diff] [blame]8
Robert P. J. Day0bc9f9e2009-07-05 09:46:19 -0400[diff] [blame]9# Gzip
Alain Knaffab76f3d2009-02-19 13:43:51 -0800[diff] [blame]10suffix_$(CONFIG_INITRAMFS_COMPRESSION_GZIP) = .gz
Alain Knaffa26ee602009-01-07 00:10:27 -0800[diff] [blame]11
12# Bzip2
Alain Knaffab76f3d2009-02-19 13:43:51 -0800[diff] [blame]13suffix_$(CONFIG_INITRAMFS_COMPRESSION_BZIP2) = .bz2
Alain Knaffa26ee602009-01-07 00:10:27 -0800[diff] [blame]14
Alain Knaffab76f3d2009-02-19 13:43:51 -0800[diff] [blame]15# Lzma
16suffix_$(CONFIG_INITRAMFS_COMPRESSION_LZMA) = .lzma
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]17
Albin Tonnerre2a2a4002010-05-26 14:44:28 -0700[diff] [blame]18# Lzo
19suffix_$(CONFIG_INITRAMFS_COMPRESSION_LZO) = .lzo
20
Hendrik Brueckner6ae64e42010-09-17 15:24:09 -0700[diff] [blame]21AFLAGS_initramfs_data.o += -DINITRAMFS_IMAGE="usr/initramfs_data.cpio$(suffix_y)"
22
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]23# Generate builtin.o based on initramfs_data.o
Hendrik Brueckner6ae64e42010-09-17 15:24:09 -0700[diff] [blame]24obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data.o
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]25
Alain Knaffa26ee602009-01-07 00:10:27 -0800[diff] [blame]26# initramfs_data.o contains the compressed initramfs_data.cpio image.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]27# The image is included using .incbin, a dependency which is not
28# tracked automatically.
Hendrik Brueckner6ae64e42010-09-17 15:24:09 -0700[diff] [blame]29$(obj)/initramfs_data.o: $(obj)/initramfs_data.cpio$(suffix_y) FORCE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]30
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]31#####
32# Generate the initramfs cpio archive
33
34hostprogs-y := gen_init_cpio
35initramfs := $(CONFIG_SHELL) $(srctree)/scripts/gen_initramfs_list.sh
36ramfs-input := $(if $(filter-out "",$(CONFIG_INITRAMFS_SOURCE)), \
Thomas Choua26d79c2006-11-25 11:09:18 -0800[diff] [blame]37 $(shell echo $(CONFIG_INITRAMFS_SOURCE)),-d)
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]38ramfs-args := \
39 $(if $(CONFIG_INITRAMFS_ROOT_UID), -u $(CONFIG_INITRAMFS_ROOT_UID)) \
Nickolayff541712006-06-09 21:24:14 +0400[diff] [blame]40 $(if $(CONFIG_INITRAMFS_ROOT_GID), -g $(CONFIG_INITRAMFS_ROOT_GID))
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]41
Alain Knaffa26ee602009-01-07 00:10:27 -0800[diff] [blame]42# .initramfs_data.cpio.d is used to identify all files included
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]43# in initramfs and to detect if any files are added/removed.
44# Removed files are identified by directory timestamp being updated
45# The dependency list is generated by gen_initramfs.sh -l
Alain Knaffa26ee602009-01-07 00:10:27 -0800[diff] [blame]46ifneq ($(wildcard $(obj)/.initramfs_data.cpio.d),)
47 include $(obj)/.initramfs_data.cpio.d
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]48endif
49
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]50quiet_cmd_initfs = GEN $@
51 cmd_initfs = $(initramfs) -o $@ $(ramfs-args) $(ramfs-input)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]52
Albin Tonnerre2a2a4002010-05-26 14:44:28 -0700[diff] [blame]53targets := initramfs_data.cpio.gz initramfs_data.cpio.bz2 initramfs_data.cpio.lzma initramfs_data.cpio.lzo initramfs_data.cpio
Sam Ravnborg58a2f7d2006-08-07 20:58:28 +0200[diff] [blame]54# do not try to update files included in initramfs
55$(deps_initramfs): ;
56
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]57$(deps_initramfs): klibcdirs
Alain Knaffa26ee602009-01-07 00:10:27 -0800[diff] [blame]58# We rebuild initramfs_data.cpio if:
59# 1) Any included file is newer then initramfs_data.cpio
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]60# 2) There are changes in which files are included (added or deleted)
Alain Knaffa26ee602009-01-07 00:10:27 -0800[diff] [blame]61# 3) If gen_init_cpio are newer than initramfs_data.cpio
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]62# 4) arguments to gen_initramfs.sh changes
Alain Knaffa26ee602009-01-07 00:10:27 -0800[diff] [blame]63$(obj)/initramfs_data.cpio$(suffix_y): $(obj)/gen_init_cpio $(deps_initramfs) klibcdirs
64 $(Q)$(initramfs) -l $(ramfs-input) > $(obj)/.initramfs_data.cpio.d
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]65 $(call if_changed,initfs)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]66