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android-review.linaro.org / kernel / hikey-linaro / bf7ef8f2d57cd1f5f1846dd58ff9309efad58252 / . / usr / Makefile
blob: e767f019accfa6a90374a270056739d09e93b920 [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
Alain Knaffa26ee602009-01-07 00:10:27 -0800[diff] [blame]9# Bzip2
P J P9ba4bcb2013-11-12 15:10:22 -0800[diff] [blame]10suffix_$(CONFIG_RD_BZIP2) = .bz2
Alain Knaffa26ee602009-01-07 00:10:27 -0800[diff] [blame]11
Alain Knaffab76f3d2009-02-19 13:43:51 -0800[diff] [blame]12# Lzma
P J P9ba4bcb2013-11-12 15:10:22 -0800[diff] [blame]13suffix_$(CONFIG_RD_LZMA) = .lzma
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]14
Lasse Collin3ebe1242011-01-12 17:01:23 -0800[diff] [blame]15# XZ
P J P9ba4bcb2013-11-12 15:10:22 -0800[diff] [blame]16suffix_$(CONFIG_RD_XZ) = .xz
Lasse Collin3ebe1242011-01-12 17:01:23 -0800[diff] [blame]17
Albin Tonnerre2a2a4002010-05-26 14:44:28 -0700[diff] [blame]18# Lzo
P J P9ba4bcb2013-11-12 15:10:22 -0800[diff] [blame]19suffix_$(CONFIG_RD_LZO) = .lzo
20
21# Lz4
22suffix_$(CONFIG_RD_LZ4) = .lz4
23
24# Gzip
25suffix_$(CONFIG_RD_GZIP) = .gz
Albin Tonnerre2a2a4002010-05-26 14:44:28 -0700[diff] [blame]26
Hendrik Brueckner6ae64e42010-09-17 15:24:09 -0700[diff] [blame]27AFLAGS_initramfs_data.o += -DINITRAMFS_IMAGE="usr/initramfs_data.cpio$(suffix_y)"
28
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]29# Generate builtin.o based on initramfs_data.o
Hendrik Brueckner6ae64e42010-09-17 15:24:09 -0700[diff] [blame]30obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data.o
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]31
Alain Knaffa26ee602009-01-07 00:10:27 -0800[diff] [blame]32# initramfs_data.o contains the compressed initramfs_data.cpio image.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]33# The image is included using .incbin, a dependency which is not
34# tracked automatically.
Hendrik Brueckner6ae64e42010-09-17 15:24:09 -0700[diff] [blame]35$(obj)/initramfs_data.o: $(obj)/initramfs_data.cpio$(suffix_y) FORCE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]36
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]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)), \
Thomas Choua26d79c2006-11-25 11:09:18 -0800[diff] [blame]43 $(shell echo $(CONFIG_INITRAMFS_SOURCE)),-d)
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]44ramfs-args := \
45 $(if $(CONFIG_INITRAMFS_ROOT_UID), -u $(CONFIG_INITRAMFS_ROOT_UID)) \
Nickolayff541712006-06-09 21:24:14 +0400[diff] [blame]46 $(if $(CONFIG_INITRAMFS_ROOT_GID), -g $(CONFIG_INITRAMFS_ROOT_GID))
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]47
Alain Knaffa26ee602009-01-07 00:10:27 -0800[diff] [blame]48# .initramfs_data.cpio.d is used to identify all files included
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]49# in initramfs and to detect if any files are added/removed.
50# Removed files are identified by directory timestamp being updated
51# The dependency list is generated by gen_initramfs.sh -l
Alain Knaffa26ee602009-01-07 00:10:27 -0800[diff] [blame]52ifneq ($(wildcard $(obj)/.initramfs_data.cpio.d),)
53 include $(obj)/.initramfs_data.cpio.d
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]54endif
55
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]56quiet_cmd_initfs = GEN $@
57 cmd_initfs = $(initramfs) -o $@ $(ramfs-args) $(ramfs-input)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]58
P J P9ba4bcb2013-11-12 15:10:22 -0800[diff] [blame]59targets := initramfs_data.cpio.gz initramfs_data.cpio.bz2 \
60 initramfs_data.cpio.lzma initramfs_data.cpio.xz \
61 initramfs_data.cpio.lzo initramfs_data.cpio.lz4 \
62 initramfs_data.cpio
Sam Ravnborg58a2f7d2006-08-07 20:58:28 +0200[diff] [blame]63# do not try to update files included in initramfs
64$(deps_initramfs): ;
65
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]66$(deps_initramfs): klibcdirs
Alain Knaffa26ee602009-01-07 00:10:27 -0800[diff] [blame]67# We rebuild initramfs_data.cpio if:
68# 1) Any included file is newer then initramfs_data.cpio
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]69# 2) There are changes in which files are included (added or deleted)
Alain Knaffa26ee602009-01-07 00:10:27 -0800[diff] [blame]70# 3) If gen_init_cpio are newer than initramfs_data.cpio
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]71# 4) arguments to gen_initramfs.sh changes
Alain Knaffa26ee602009-01-07 00:10:27 -0800[diff] [blame]72$(obj)/initramfs_data.cpio$(suffix_y): $(obj)/gen_init_cpio $(deps_initramfs) klibcdirs
73 $(Q)$(initramfs) -l $(ramfs-input) > $(obj)/.initramfs_data.cpio.d
Sam Ravnborgd39a206b2006-04-11 13:24:32 +0200[diff] [blame]74 $(call if_changed,initfs)