Bug#809611: d-i fails to boot on HP mv2120

[Martin Michlmayr <tbm@cyrius.com>]

Please add the following to the release-notes on armel in the upgrade
section:

HP mv2120

The default u-boot settings from HP no longer work with Debian 9.
Before you can upgrade to Debian 9, you have to change some settings
in the u-boot configuration.  The required changes are documented on
the [Debian on HP
mv2120](http://www.cyrius.com/debian/orion/hp/mv2120/uboot-config/)
page.

or if you don't want to link to an external page:

HP mv2120

The default u-boot settings from HP no longer work with Debian 9.
Before you can upgrade to Debian 9, you have to change some settings
in the u-boot configuration.

If you have serial console access to the mv2120, you can run some
commands in u-boot. Simply interrupt the boot process by pressing a
key and type the following:

    setenv loadAddr 0x0600000
    setenv bootcmd 'bootext2 0,1:1,2 0x0600000 /boot/uImage /dev/sda /dev/sdb'
    saveenv

If you don't have a serial console, you can make the changes from
within Debian. Run the following commands:

   cat >/etc/fw_env.config <<EOF
   /dev/mtd0           0x00000         0x1000     0x20000
   EOF

   fw_setenv loadAddr 0x0600000
   fw_setenv bootcmd "bootext2 0,1:1,2 0x0600000 /boot/uImage /dev/sda /dev/sdb"

This creates a config file so the u-boot environment can be modified
and uses fw_setenv to update two boot variables.

-- 
Martin Michlmayr
http://www.cyrius.com/