imx6: convert ventana images to squashfs+ubifs overlay

Replace the ventana ubi images from a single rootfs volume containing the
rootfs as well as kernel+dtbs in the boot/ subdir to a multi-volume ubi
containing kernel+dtbs+bootscript in 'root' ubifs volume, rootfs in 'rootfs'
squasfs volume, and rootfs_data an empty ubifs volume.

At the same time move ventana image creation over to using the new
TARGET_DEVICE syntax as a cleanup.

Additionally removed FIT image creation as it is recommended that this be
done manually to produce signed FIT images if needed.

Note that a bootscript is needed for Ventana to change its default mtdparts
to rename the 2nd partition from 'rootfs' to 'ubi'. This is because there
are patches in OpenWrt kernels that try to auto-attach and auto-mount and these
get in the way if the mtd partition is named 'rootfs'.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@47508 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 150 insertions, 0 deletions

diff --git a/target/linux/imx6/image/bootscript-ventana b/target/linux/imx6/image/bootscript-ventana
new file mode 100644
index 0000000000..8c789e57c9
--- /dev/null
+++ b/target/linux/imx6/image/bootscript-ventana
@@ -0,0 +1,150 @@
+echo "Gateworks Ventana OpenWrt Boot script v1.00"
+
+# set some defaults
+# set some defaults
+test -n "$fs"    || fs=ext2
+test -n "$disk"  || disk=0
+setenv nextcon 0
+setenv bootargs console=${console},${baudrate}
+setenv loadaddr 10800000
+setenv fdt_addr 18000000
+
+# detect displays in the following priority: HDMI, LVDS
+# setenv display to override detection for a single display
+# or setenv video if you want multiple displays
+if test -n "$video" ; then
+  echo "using video config from env: $video"
+  setenv bootargs "${bootargs}" "${video}"
+else
+  if test -n "$display" ; then
+    echo "using display from env: $display"
+  elif test -n "$panel" ; then
+    echo "using display from env: $panel"
+    setenv display "$panel"
+  else
+    echo "Detecting displays..."
+    i2c dev 2
+    if hdmidet ; then
+	echo "  HDMI detected"
+	setenv display "HDMI"
+    elif i2c probe 0x04 ; then
+	echo "  Freescale MXC-LVDS1 detected"
+	setenv display "LVDS"
+    elif i2c probe 0x14 ; then
+	echo "  DLC800FIGT3 detected"
+	setenv display "LVDS"
+    elif i2c probe 0x38 ; then
+	echo "  DLC700JMGT4 detected"
+	setenv display "LVDS"
+    fi
+  fi
+
+  # configure displays
+  echo "Configuring kernel bootargs for display(s): $display"
+  for p in ${display}; do
+    if itest.s "x${p}" == "xHannstar-XGA" ; then
+	setenv ptype "LVDS"
+    elif itest.s "x${p}" == "xDLC700JMGT4" ; then
+	setenv ptype "LVDS"
+    elif itest.s "x${p}" == "xDLC800FIGT3" ; then
+	setenv ptype "LVDS"
+    elif itest.s "x${p}" == "xLVDS" ; then
+	setenv ptype "LVDS"
+    elif itest.s "x${p}" == "xHDMI" ; then
+	setenv ptype "HDMI"
+	test -n "$hdmi" || hdmi=1080p
+	if itest.s "x${hdmi}" == "x1080p" ; then
+		setenv hdmi "1920x1080M@60"
+	elif itest.s "x${hdmi}" == "x720p" ; then
+		setenv hdmi "1280x720M@60"
+	elif itest.s "x${hdmi}" == "x480p" ; then
+		setenv hdmi "720x480M@60"
+	fi
+    else
+        echo "${p} not supported"
+    fi
+
+    if itest.s "x${ptype}" == "xLVDS" ; then
+	echo "  mxcfb${nextcon}: LVDS ($p)"
+	setenv bootargs "${bootargs}" video=mxcfb${nextcon}:dev=ldb,bpp=32,if=RGB666
+	setexpr nextcon $nextcon + 1
+    elif itest.s "x${ptype}" == "xHDMI" ; then
+	echo "  mxcfb${nextcon}: HDMI ($hdmi)"
+	setenv bootargs "${bootargs}" video=mxcfb${nextcon}:dev=hdmi,bpp=32,${hdmi},if=RGB24
+	setexpr nextcon $nextcon + 1
+    fi
+
+  done
+
+  # disable remaining mxcfb devices
+  while test "4" -ne $nextcon ; do
+	setenv bootargs "${bootargs}" video=mxcfb${nextcon}:off
+	setexpr nextcon $nextcon + 1
+  done
+fi
+
+# detect dtype and bootdev by looking for kernel on media the bootloader
+# has mounted (in order of preference: usb/mmc/sata)
+#
+# This assumes the bootloader has already started the respective subsystem
+# or mounted the filesystem if appropriate to get to this bootscript
+#
+# To Speed up boot set dtype manually
+if test -n "$dtype" ; then
+	echo "Using dtype from env: $dtype"
+else
+	echo "Detecting boot device (dtype)..."
+	if ${fs}load usb ${disk}:1 ${loadaddr} ${bootdir}/uImage ; then
+		dtype=usb
+	elif ${fs}load mmc ${disk}:1 ${loadaddr} ${bootdir}/uImage ; then
+		dtype=mmc
+	elif ${fs}load sata ${disk}:1 ${loadaddr} ${bootdir}/uImage ; then
+		dtype=sata
+	elif ubifsload ${loadaddr} ${bootdir}/uImage ; then
+		dtype=nand
+	fi
+	echo "detected dtype:$dtype"
+fi
+if test -n "$bootdev" ; then
+	echo "Using bootdev from env: $bootdev"
+else
+	if itest.s "x${dtype}" == "xmmc" ; then
+		bootdev=mmcblk0
+	else
+		bootdev=sda
+	fi
+fi
+
+if itest.s "x${dtype}" == "xnand" ; then
+	echo "Booting from NAND..."
+	# fix partition name
+	#  OpenWrt kernel bug prevents partition name of 'rootfs' from booting
+	#  instead name the partition ubi which is what is looked for by
+	#  procd sysupgrade
+	mtdparts del rootfs && mtdparts add nand0 - ubi
+	echo "mtdparts:${mtdparts}"
+	setenv fsload ubifsload
+	setenv root "ubi0:ubi ubi.mtd=2 rootfstype=squashfs,ubifs"
+else
+	echo "Booting from block device ${bootdev}..."
+	setenv fsload "${fs}load ${dtype} ${disk}:1"
+	setenv root "root=/dev/${bootdev}"
+fi
+
+setenv bootargs "${bootargs}" "${root}" "${extra}"
+if ${fsload} ${loadaddr} ${bootdir}/uImage; then
+	if ${fsload} ${fdt_addr} ${bootdir}/${fdt_file}; then
+		echo Loaded DTB from ${bootdir}/${fdt_file}
+		bootm ${loadaddr} - ${fdt_addr}
+	elif ${fsload} ${fdt_addr} ${bootdir}/${fdt_file1}; then
+		echo Loaded DTB from ${bootdir}/${fdt_file1}
+		bootm ${loadaddr} - ${fdt_addr}
+	elif ${fsload} ${fdt_addr} ${bootdir}/${fdt_file2}; then
+		echo Loaded DTB from ${bootdir}/${fdt_file2}
+		bootm ${loadaddr} - ${fdt_addr}
+	else
+		echo "Error loading device-tree"
+	fi
+else
+	echo "Error loading kernel image"
+fi