mvebu: uDPU: add sysupgrade support

This patch adds sysupgrade, uboot-env and networking support
for Methode uDPU device.

Device features 4 partitions:

-----------------------------------------
|  boot   | recovery  | rootfs |  misc  |
| (ext4)  |  (ext4)   | (fsf2) | (f2fs) |
_________________________________________

Idea was to use f2fs only but the u-boot currently lacks support
so first 2 partition are ext4 to be u-boot readable, and this was
a reason why custom build and sysupgrade sections were required.

On the sysupgrade, boot and rootfs partitions are updated, firmare
image and user configuration is saved on the misc partition and if
the upgrade was successfull, recovery partition will be updated on
after the reboot from preinit script. If the sysupgrade fails for any
reason, device will fallback to recovery initramfs image.

Signed-off-by: Vladimir Vid <vladimir.vid@sartura.hr>

1 files changed, 38 insertions, 0 deletions

diff --git a/target/linux/mvebu/image/udpu.bootscript b/target/linux/mvebu/image/udpu.bootscript
new file mode 100644
index 0000000000..1da35a793e
--- /dev/null
+++ b/target/linux/mvebu/image/udpu.bootscript
@@ -0,0 +1,38 @@
+# Bootscript for Methode uDPU device
+# Device and variables may vary between different revisions
+# of device, so we need to make sure everything is set correctly.
+
+# Set the LED's correctly
+gpio clear 12; gpio clear 40; gpio clear 45;
+
+# Find eMMC device,
+if mmc dev 0; then
+	setenv mmcdev 0
+	setenv rootdev 'root=/dev/mmcblk0p3'
+elif mmc dev 1; then
+	setenv mmcdev 1
+	setenv rootdev 'root=/dev/mmcblk1p3'
+fi
+
+# Set the variables if necessary
+if test ${kernel_addr_r}; then
+	setenv kernel_addr_r 0x5000000
+fi
+
+if test ${fdt_add_r}; then
+	setenv fdt_addr_r 0x4f00000
+fi
+
+setenv console 'console=ttyMV0,115200 earlycon=ar3700_uart,0xd0012000'
+setenv bootargs ${console} $rootdev rw rootwait
+
+load mmc ${mmcdev}:1 ${fdt_addr_r} @DTB@.dtb
+load mmc ${mmcdev}:1 ${kernel_addr_r} Image
+
+booti ${kernel_addr_r} - ${fdt_addr_r}
+
+# If the boot command fails, fallback to recovery image
+echo '-- Boot failed, falling back to the recovery image --'
+setenv bootargs $console
+load mmc ${mmcdev}:2 ${kernel_addr_r} recovery.itb
+bootm ${kernel_addr_r}