Add chrony ntp manager with stf/p1 ntp server addresses

recipes-core/images/core-image-gfex.bb

@@ -6,6 +6,7 @@ IMAGE_INSTALL += "packagegroup-core-ssh-openssh"
 IMAGE_INSTALL += "devmem2"
 IMAGE_INSTALL += "git"
 IMAGE_INSTALL += "zile"
+IMAGE_INSTALL += "chrony"
 
 IMAGE_INSTALL += "python3-ironman"
 IMAGE_INSTALL += "python3-numpy"

recipes-support/chrony/chrony_%.bbappend

@@ -0,0 +1,10 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
+
+SRC_URI += "file://chrony.conf"
+
+do_install_append() {
+
+    install -m 644 ${WORKDIR}/chrony.conf ${D}${sysconfdir}
+
+}
+

recipes-support/chrony/files/chrony.conf

@@ -0,0 +1,47 @@
+# Use public NTP servers from the pool.ntp.org project.
+# Please consider joining the pool project if possible by running your own
+# server(s).
+# If you are a vendor distributing a product using chrony, you *MUST*
+# read and comply with http://www.pool.ntp.org/vendors.html
+#pool 0.openembedded.pool.ntp.org iburst
+
+# Use a local timeserver in preference to the pool, if it's reachable.
+#server 192.168.22.22 iburst minpoll 2 prefer
+
+server 137.138.16.69 iburst
+server 137.138.17.69 iburst
+
+# Sync to pulse-per-second from an onboard GPS.
+#refclock PPS /dev/pps0 poll 0 prefer
+# You'll want to enable CONFIG_PPS and CONFIG_PPS_CLIENT_GPIO in your kernel,
+# and an entry something like this in your device tree:
+#	pps {
+#		compatible = "pps-gpio";
+#		gpios = <&ps7_gpio_0 56 0>;
+#	};
+
+# In first three updates step the system clock instead of slew
+# if the adjustment is larger than 1 second.
+makestep 1.0 3
+
+# Record the rate at which the system clock gains/loses time,
+# improving accuracy after reboot
+driftfile /var/lib/chrony/drift
+
+# Enable kernel synchronization of the hardware real-time clock (RTC).
+rtcsync
+
+# Allow NTP client access from local network.
+#allow 192.168/16
+
+# Serve time even if not synchronized to any NTP server.
+#local stratum 10
+
+# Specify file containing keys for NTP authentication.
+#keyfile /etc/chrony.keys
+
+# Specify directory for log files.
+logdir /var/log/chrony
+
+# Select which information is logged.
+#log measurements statistics tracking