Add busybox configuration for stm32mp machine

Signed-off-by: Christophe Priouzeau <christophe.priouzeau@st.com>

recipes-core/busybox/busybox/0001-miscutils-watchdog-Add-gettimeleft.patch

@@ -0,0 +1,38 @@
+From 08d9bcdef21f117511e109d28507c9f76045914f Mon Sep 17 00:00:00 2001
+From: Yannick Fertre <yannick.fertre@st.com>
+Date: Fri, 16 Sep 2016 16:59:37 +0200
+Subject: [PATCH] miscutils: watchdog: Add gettimeleft
+
+For purpose debug only, call of ioctl GETTIMELEFT
+
+Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
+---
+ /miscutils/watchdog.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a//miscutils/watchdog.c b//miscutils/watchdog.c
+index d3a76ed..d8e1c0e 100644
+--- a//miscutils/watchdog.c
++++ b//miscutils/watchdog.c
+@@ -50,6 +50,7 @@ int watchdog_main(int argc, char **argv)
+ 	unsigned opts;
+ 	unsigned stimer_duration; /* how often to restart */
+ 	unsigned htimer_duration = 60000; /* reboots after N ms if not restarted */
++	unsigned time_left;
+ 	char *st_arg;
+ 	char *ht_arg;
+ 
+@@ -105,6 +106,10 @@ int watchdog_main(int argc, char **argv)
+ 		 */
+ 		write(3, "", 1); /* write zero byte */
+ 		usleep(stimer_duration * 1000L);
++
++#ifdef WDIOC_GETTIMELEFT
++		ioctl_or_warn(3, WDIOC_GETTIMELEFT, &time_left);
++#endif
+ 	}
+ 	return EXIT_SUCCESS; /* - not reached, but gcc 4.2.1 is too dumb! */
+ }
+-- 
+1.9.1
+

recipes-core/busybox/busybox/busybox-stm32mp.cfg

@@ -0,0 +1,13 @@
+# Enable MDEV feature for initramfs
+CONFIG_MDEV=y
+CONFIG_FEATURE_MDEV_CONF=y
+CONFIG_FEATURE_MDEV_RENAME=y
+CONFIG_FEATURE_MDEV_RENAME_REGEXP=y
+CONFIG_FEATURE_MDEV_EXEC=y
+CONFIG_FEATURE_MDEV_LOAD_FIRMWARE=y
+CONFIG_WATCHDOG=y
+CONFIG_SETSID=y
+CONFIG_CTTYHACK=y
+CONFIG_UDPSVD=y
+CONFIG_TFTPD=y
+CONFIG_IFPLUGD=y

recipes-core/busybox/busybox/ifplugd.action

@@ -0,0 +1,20 @@
+set -e
+
+#Ensure the correct values are received by the script
+if [ -z "$1" ] || [ -z "$2" ] ; then
+echo "Wrong arguments for ifplugd" > /dev/stderr
+fi
+
+if [ "$2" = "up" ]
+then
+echo "ifplugd up"
+ifup $1
+/sbin/udhcpc -D -s /usr/share/udhcpc/default.script
+fi
+
+if [ "$2" = "down" ]
+then
+echo "ifplugd down"
+ifdown $1
+#/sbin/ifconfig $1 down
+fi

recipes-core/busybox/busybox/ifplugd.conf

@@ -0,0 +1,2 @@
+INTERFACES= "eth0"
+ARGS="-fwI -u0 -d10"

recipes-core/busybox/busybox/ifplugd.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ -e /usr/sbin/ifplugd ]; then
+    /usr/sbin/ifplugd
+fi

recipes-core/busybox/busybox_%.bbappend

@@ -0,0 +1,33 @@
+FILESEXTRAPATHS_prepend_stm32mpcommon := "${THISDIR}/${PN}:"
+
+SRC_URI_append_stm32mpcommon = " \
+       file://${BUSYBOX_CONFIG_FRAGMENT} \
+       file://0001-miscutils-watchdog-Add-gettimeleft.patch \
+       file://ifplugd.conf \
+       file://ifplugd.action \
+       file://ifplugd.sh \
+       "
+
+BUSYBOX_CONFIG_FRAGMENT_stm32mpcommon = "busybox-stm32mp.cfg"
+
+#inherit update-rc.d
+DEPENDS_append_stm32mpcommon = " ${@bb.utils.contains('DISTRO_FEATURES', 'systemd', '', 'update-rc.d-native', d)}"
+
+do_configure_append_stm32mpcommon () {
+    # merge specific configuration to newly generated .config
+    merge_config.sh -m -r -O ${B} ${B}/.config ${WORKDIR}/${BUSYBOX_CONFIG_FRAGMENT} 1>&2
+    # make sure to generate proper config file for busybox
+    cml1_do_configure
+}
+
+do_install_append_stm32mpcommon () {
+    if [ "${@bb.utils.contains('DISTRO_FEATURES', 'systemd', '1', '0', d)}" = "0" ]; then
+        if grep -q "CONFIG_IFPLUGD=y" ${B}/.config; then
+            install -d ${D}${sysconfdir}/ifplugd
+            install -m 755 ${WORKDIR}/ifplugd.sh ${D}${sysconfdir}/init.d/ifplugd.sh
+            update-rc.d -r ${D} ifplugd.sh start 99 2 3 4 5 .
+            install -m 755 ${WORKDIR}/ifplugd.conf ${D}${sysconfdir}/ifplugd/ifplugd.conf
+            install -m 755 ${WORKDIR}/ifplugd.action ${D}${sysconfdir}/ifplugd/ifplugd.action
+        fi
+    fi
+}