1 files changed, 97 insertions, 0 deletions
diff --git a/recipes/initrdscripts/files/init.sh b/recipes/initrdscripts/files/init.sh
new file mode 100644
index 0000000000..221b8f56b9
--- /dev/null
+++ b/recipes/initrdscripts/files/init.sh
@@ -0,0 +1,97 @@
+#!/bin/sh
+
+MODULE_DIR=/initrd.d
+BOOT_ROOT=
+ROOT_DEVICE=
+
+early_setup() {
+    mkdir /proc
+    mount -t proc proc /proc
+    mkdir /mnt
+    modprobe -q mtdblock
+}
+
+dev_setup()
+{
+    echo -n "initramfs: Creating device nodes: "
+    grep '^ *[0-9]' /proc/partitions | while read major minor blocks dev
+    do
+        if [ ! -e /dev/$dev ]; then
+            echo -n "$dev "
+            [ -e /dev/$dev ] || mknod /dev/$dev b $major $minor
+        fi
+    done
+    echo
+}
+
+read_args() {
+    [ -z "$CMDLINE" ] && CMDLINE=`cat /proc/cmdline`
+    for arg in $CMDLINE; do
+        optarg=`expr "x$arg" : 'x[^=]*=\(.*\)'`
+        case $arg in
+            root=*)
+                ROOT_DEVICE=$optarg ;;
+            rootfstype=*)
+                ROOT_FSTYPE=$optarg ;;
+            rootdelay=*)
+                rootdelay=$optarg ;;
+            debug) set -x ;;
+            shell) sh ;;
+        esac
+    done
+}
+
+do_depmod() {
+	[ -e "/lib/modules/$(uname -r)/modules.dep" ] || depmod
+}
+
+load_module() {
+    # Cannot redir to $CONSOLE here easily - may not be set yet
+    echo "initramfs: Loading $module module"
+    source $1
+}
+
+load_modules() {
+    for module in $MODULE_DIR/$1; do
+        [ -e "$module"  ] && load_module $module
+    done
+}
+
+boot_root() {
+    cd $BOOT_ROOT
+    exec switch_root -c /dev/console $BOOT_ROOT /sbin/init
+}
+
+fatal() {
+    echo $1 >$CONSOLE
+    echo >$CONSOLE
+    exec sh
+}
+
+
+echo "Starting initramfs boot..."
+early_setup
+load_modules '0*'
+do_depmod
+
+[ -z "$CONSOLE" ] && CONSOLE="/dev/console"
+
+read_args
+
+if [ -z "$rootdelay" ]; then
+    echo "rootdelay parameter was not passed on kernel command line - assuming 2s delay"
+    echo "If you would like to avoid this delay, pass explicit rootdelay=0"
+    rootdelay="2"
+fi
+if [ -n "$rootdelay" ]; then
+    echo "Waiting $rootdelay seconds for devices to settle..." >$CONSOLE
+    sleep $rootdelay
+fi
+
+dev_setup
+
+load_modules '[1-9]*'
+
+[ -n "$BOOT_ROOT" ] && boot_root
+
+fatal "No valid root device was specified.  Please add root=/dev/something to the kernel command-line and try again."