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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /usr/Makefile | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'usr/Makefile')
-rw-r--r-- | usr/Makefile | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/usr/Makefile b/usr/Makefile new file mode 100644 index 0000000000..f8e1ad19e0 --- /dev/null +++ b/usr/Makefile @@ -0,0 +1,85 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# kbuild file for usr/ - including initramfs image +# + +compress-y := copy +compress-$(CONFIG_INITRAMFS_COMPRESSION_GZIP) := gzip +compress-$(CONFIG_INITRAMFS_COMPRESSION_BZIP2) := bzip2 +compress-$(CONFIG_INITRAMFS_COMPRESSION_LZMA) := lzma +compress-$(CONFIG_INITRAMFS_COMPRESSION_XZ) := xzmisc +compress-$(CONFIG_INITRAMFS_COMPRESSION_LZO) := lzo +compress-$(CONFIG_INITRAMFS_COMPRESSION_LZ4) := lz4 +compress-$(CONFIG_INITRAMFS_COMPRESSION_ZSTD) := zstd + +obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data.o + +$(obj)/initramfs_data.o: $(obj)/initramfs_inc_data + +ramfs-input := $(CONFIG_INITRAMFS_SOURCE) +cpio-data := + +# If CONFIG_INITRAMFS_SOURCE is empty, generate a small initramfs with the +# default contents. +ifeq ($(ramfs-input),) +ramfs-input := $(srctree)/$(src)/default_cpio_list +endif + +ifeq ($(words $(ramfs-input)),1) + +# If CONFIG_INITRAMFS_SOURCE specifies a single file, and it is suffixed with +# .cpio, use it directly as an initramfs. +ifneq ($(filter %.cpio,$(ramfs-input)),) +cpio-data := $(ramfs-input) +endif + +# If CONFIG_INITRAMFS_SOURCE specifies a single file, and it is suffixed with +# .cpio.*, use it directly as an initramfs, and avoid double compression. +ifeq ($(words $(subst .cpio.,$(space),$(ramfs-input))),2) +cpio-data := $(ramfs-input) +compress-y := copy +endif + +endif + +# For other cases, generate the initramfs cpio archive based on the contents +# specified by CONFIG_INITRAMFS_SOURCE. +ifeq ($(cpio-data),) + +cpio-data := $(obj)/initramfs_data.cpio + +hostprogs := gen_init_cpio + +# .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 +-include $(obj)/.initramfs_data.cpio.d + +# do not try to update files included in initramfs +$(deps_initramfs): ; + +quiet_cmd_initfs = GEN $@ + cmd_initfs = \ + $(CONFIG_SHELL) $< -o $@ -l $(obj)/.initramfs_data.cpio.d \ + $(if $(CONFIG_INITRAMFS_ROOT_UID), -u $(CONFIG_INITRAMFS_ROOT_UID)) \ + $(if $(CONFIG_INITRAMFS_ROOT_GID), -g $(CONFIG_INITRAMFS_ROOT_GID)) \ + $(if $(KBUILD_BUILD_TIMESTAMP), -d "$(KBUILD_BUILD_TIMESTAMP)") \ + $(ramfs-input) + +# We rebuild initramfs_data.cpio if: +# 1) Any included file is newer than initramfs_data.cpio +# 2) There are changes in which files are included (added or deleted) +# 3) If gen_init_cpio are newer than initramfs_data.cpio +# 4) Arguments to gen_initramfs.sh changes +$(obj)/initramfs_data.cpio: $(src)/gen_initramfs.sh $(obj)/gen_init_cpio $(deps_initramfs) FORCE + $(call if_changed,initfs) + +endif + +$(obj)/initramfs_inc_data: $(cpio-data) FORCE + $(call if_changed,$(compress-y)) + +targets += initramfs_data.cpio initramfs_inc_data + +subdir-$(CONFIG_UAPI_HEADER_TEST) += include |