Add support for raspi3 rootfs generation for ubuntu-image consumption with all the additional changes required.

debian/changelog

@@ -2,8 +2,11 @@ livecd-rootfs (2.537) UNRELEASED; urgency=medium
 
   * Avoid issues of hard-linking to a symbolic vmlinuz as this can lead to a
     dangling symlink.
+  * Add support for raspi3 rootfs builds (based on Ryan Finnie).
+  * For ubuntu-image consumption, export the kernel and initrd to
+    image/boot/uboot for raspi*.
 
- -- Łukasz 'sil2100' Zemczak <lukasz.zemczak@ubuntu.com>  Tue, 18 Sep 2018 10:21:30 +0200
+ -- Łukasz 'sil2100' Zemczak <lukasz.zemczak@ubuntu.com>  Tue, 18 Sep 2018 10:45:58 +0200
 
 livecd-rootfs (2.536) cosmic; urgency=medium
 

live-build/auto/build

@@ -555,7 +555,7 @@ case $PROJECT:${SUBPROJECT:-} in
     if [ "$PROJECT:$SUBPROJECT" = "ubuntu-core:system-image" ]; then
       case $ARCH in
           armhf)
-            subarches="generic raspi2"
+            subarches="generic raspi2 raspi3"
             ;;
           arm64)
             subarches="generic dragonboard"
@@ -593,6 +593,8 @@ case $PROJECT:${SUBPROJECT:-} in
             armhf)
               if [ "$devarch" = "raspi2" ]; then
                   linux_package="linux-image-raspi2"
+              elif [ "$devarch" = "raspi3" ]; then
+                  linux_package="linux-image-raspi2"
               fi
               ;;
             ppc64el|s390x)
@@ -660,7 +662,7 @@ case $PROJECT:${SUBPROJECT:-} in
         if [ -n "$dtbs" ]; then
            mv "$dtbs" $TMPDIR/assets/dtbs
            case $devarch in
-               raspi2)
+               raspi2|raspi3)
                    # ubuntu-device-flash does not like subdirs here, we need to tar it up
                    if [ -e $TMPDIR/assets/dtbs/overlays ]; then
                        tar -C $TMPDIR/assets/dtbs -f $TMPDIR/assets/dtbs/overlays.tgz -czv overlays
@@ -707,6 +709,9 @@ EOF
         if [ "$devarch" = "raspi2" ];then
             tarname="raspi2.$tarname"
             manifestname="$devarch.$manifestname"
+        elif [ "$devarch" = "raspi3" ];then
+            tarname="raspi3.$tarname"
+            manifestname="$devarch.$manifestname"
         elif [ "$devarch" = "dragonboard" ];then
             tarname="$devarch.$tarname"
             manifestname="$devarch.$manifestname"
@@ -736,6 +741,9 @@ EOF
         if [ "$devarch" = "raspi2" ];then
             metaname=canonical-pi2-linux
             snapname="$devarch.kernel.snap"
+        elif [ "$devarch" = "raspi3" ];then
+            metaname=canonical-pi3-linux
+            snapname="$devarch.kernel.snap"
         elif [ "$devarch" = "generic" ] && [ "$ARCH" = "armhf" ];then
             metaname=canonical-bbb-linux
         elif [ "$devarch" = "dragonboard" ] && [ "$ARCH" = "arm64" ];then
@@ -845,7 +853,8 @@ if [ "$NUMFLAVOURS" = 1 ] && [ "$LB_LINUX_FLAVOURS" != "none" ]; then
 	fi
 fi
 
-if [ "$SUBARCH" = "ac100" ]; then
+case $SUBARCH in
+	ac100)
 		# create the md5sum and size files for which we are actually doing all this
 		md5sum $PREFIX.rootfs.tar.gz >chroot/installer.md5
 		wc -c $PREFIX.rootfs.tar.gz >chroot/installer.size
@@ -873,8 +882,17 @@ if [ "$SUBARCH" = "ac100" ]; then
 	
 		cp "chroot/boot/installer-${KVERS}.img" "$PREFIX.bootimg-$FLAVOUR"
 		ln -sf "$PREFIX.bootimg-$FLAVOUR" "$PREFIX.bootimg"
+		;;
 
-fi
+	raspi2|raspi3)
+		UBOOT_BOOT="image/boot/uboot"
+
+		mkdir -p $UBOOT_BOOT
+
+		cp $PREFIX.initrd $UBOOT_BOOT/initrd.img || true
+		cp $PREFIX.kernel $UBOOT_BOOT/vmlinuz || true
+		;;
+esac
 
 if [ "$PROJECT" = "ubuntu-touch" ] || [ "$PROJECT" = "ubuntu-touch-custom" ]; then
 	sourceslist="chroot/etc/apt/sources.list"

live-build/auto/config

@@ -746,6 +746,12 @@ case $ARCH in
 				add_package install linux-firmware-raspi2 u-boot-rpi flash-kernel u-boot-tools
 				BINARY_REMOVE_LINUX=false
 				;;
+			raspi3)
+				COMPONENTS='main restricted universe multiverse'
+				KERNEL_FLAVOURS=raspi2
+				add_package install linux-firmware-raspi2 u-boot-rpi flash-kernel u-boot-tools
+				BINARY_REMOVE_LINUX=false
+				;;
 		esac
 		;;
 esac