rng-tools: Import recipe from meta-openembedded

Adding this recipe to oe-core will allow it to be used by qemu to
provide a way to generate additional entropy needed to fix hangs
with getrandom().

Additional kernel config options have already been added to the
default qemu kernel configs.

[YOCTO #8681]
[YOCOT #8816]

(From OE-Core rev: 030bc0b2f9636f5cacef29c939b323569cd5673f)

Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 52 insertions, 0 deletions

diff --git a/meta/recipes-support/rng-tools/rng-tools/default b/meta/recipes-support/rng-tools/rng-tools/default
new file mode 100644
index 0000000000..7aede9be03
--- /dev/null
+++ b/meta/recipes-support/rng-tools/rng-tools/default
@@ -0,0 +1,3 @@
+# Specify rng device
+#RNG_DEVICE=/dev/hwrng
+RNG_DEVICE=/dev/urandom
diff --git a/meta/recipes-support/rng-tools/rng-tools/init b/meta/recipes-support/rng-tools/rng-tools/init
new file mode 100644
index 0000000000..7cf78393a4
--- /dev/null
+++ b/meta/recipes-support/rng-tools/rng-tools/init
@@ -0,0 +1,49 @@
+#! /bin/sh 
+#
+# This is an init script for openembedded
+# Copy it to /etc/init.d/rng-tools and type
+# > update-rc.d rng-tools defaults 60
+#
+
+rngd=/usr/sbin/rngd
+test -x "$rngd" || exit 1
+
+if [ -e /etc/default/rng-tools ]; then
+    . /etc/default/rng-tools
+fi
+
+if [ -n "$RNG_DEVICE" ]; then
+    EXTRA_ARGS="-- -r $RNG_DEVICE"
+fi
+
+
+case "$1" in
+  start)
+    echo -n "Starting random number generator daemon"
+    start-stop-daemon -S -q -x $rngd $EXTRA_ARGS
+    echo "."
+    ;;
+  stop)
+    echo -n "Stopping random number generator daemon"
+    start-stop-daemon -K -q -n rngd
+    echo "."
+    ;;
+  reload|force-reload)
+    echo -n "Signalling rng daemon restart"
+    start-stop-daemon -K -q -s 1 -x $rngd
+    start-stop-daemon -K -q -s 1 -x $rngd
+    ;;
+  restart)
+    echo -n "Stopping random number generator daemon"
+    start-stop-daemon -K -q -n rngd
+    echo "."
+    echo -n "Starting random number generator daemon"
+    start-stop-daemon -S -q -x $rngd $EXTRA_ARGS
+    echo "."
+    ;;
+  *)
+    echo "Usage: /etc/init.d/rng-tools {start|stop|reload|restart|force-reload}"
+    exit 1
+esac
+
+exit 0