2 files changed, 47 insertions, 1 deletions

diff --git a/usr/Kconfig b/usr/Kconfig
new file mode 100644
index 000000000000..07727f3c7cea
--- /dev/null
+++ b/usr/Kconfig
@@ -0,0 +1,46 @@
+#
+# Configuration for initramfs
+#
+
+config INITRAMFS_SOURCE
+        string "Initramfs source file(s)"
+        default ""
+        help
+          This can be either a single cpio archive with a .cpio suffix or a
+          space-separated list of directories and files for building the
+          initramfs image.  A cpio archive should contain a filesystem archive
+          to be used as an initramfs image.  Directories should contain a
+          filesystem layout to be included in the initramfs image.  Files
+          should contain entries according to the format described by the
+          "usr/gen_init_cpio" program in the kernel tree.
+
+          When multiple directories and files are specified then the
+          initramfs image will be the aggregate of all of them.
+
+          See <file:Documentation/early-userspace/README for more details.
+
+          If you are not sure, leave it blank.
+
+config INITRAMFS_ROOT_UID
+        int "User ID to map to 0 (user root)"
+        depends on INITRAMFS_SOURCE!=""
+        default "0"
+        help
+          This setting is only meaningful if the INITRAMFS_SOURCE is
+          contains a directory.  Setting this user ID (UID) to something
+          other than "0" will cause all files owned by that UID to be
+          owned by user root in the initial ramdisk image.
+
+          If you are not sure, leave it set to "0".
+
+config INITRAMFS_ROOT_GID
+        int "Group ID to map to 0 (group root)"
+        depends on INITRAMFS_SOURCE!=""
+        default "0"
+        help
+          This setting is only meaningful if the INITRAMFS_SOURCE is
+          contains a directory.  Setting this group ID (GID) to something
+          other than "0" will cause all files owned by that GID to be
+          owned by group root in the initial ramdisk image.
+
+          If you are not sure, leave it set to "0".
diff --git a/usr/Makefile b/usr/Makefile
index 248d5551029d..e2129cb570bb 100644
--- a/usr/Makefile
+++ b/usr/Makefile
@@ -27,7 +27,7 @@ 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)
 
-$(obj)/initramfs_list: FORCE
+$(obj)/initramfs_list: $(obj)/Makefile FORCE
         $(call filechk,initramfs_list)
 
 quiet_cmd_cpio = CPIO    $@