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| -rw-r--r-- | tasks.rst | 36 |
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@@ -216,6 +216,42 @@ route seems to be disabling the Auto-connect flag in the wlan0-ap settings, then run ``sudo nmcli connection down wlan0-ap``, wait a minute, then you should be given a list of access points to connect to as usual. +Upgrading the Kernel and u-boot +------------------------------------- + +The Novena kernel developers (aka, xobs) occasionally publishes updates to the +linux kernel that shipped with the Novena boards. These updates come in the +form of apt packges (.deb) in the ``repo.novena.io`` repository, but they are +not automatically installed in the ``/boot`` partition of the onboard microSD +card, so upgrading these packages and rebooting is not sufficient to upgrade +your board. + +On the other hand, the ``u-boot-novena`` bootloader package *will* install +itself on ``/boot`` if it is already mounted. + +The following steps will install an updated linux kernel and compiled device +tree file (.dtb) to the appropriate location. It assumes that ``/boot`` has +been mounted with the microSD first partition (aka, ``/dev/mmcblk0p1``), and +that the ``repo.novena.io`` repository is configured and keys are installed. +You will also have to change the ``3.19.0-00270-g3d69696`` filename part to the +version of the kernel that has actually been fetched. + +:: + + sudo apt-get update + sudo apt-get install u-boot-novena linux-firmware-image-novena \ + linux-headers-novena linux-image-novena + # Backup the old files + sudo cp /boot/zimage /boot/zimage.old + sudo cp /boot/novena.dtb /boot/novena.dtb.old + # Copy in the new files; vmlinuz is already in zimage format + sudo cp /usr/share/linux-novena/vmlinuz-3.19.0-00270-g3d69696.dtb /boot/novena.dtb + sudo cp /usr/share/linux-novena/vmlinuz-3.19.0-00270-g3d69696 /boot/zimage + # Flush filesystem data to the card + sync + # Reboot! + sudo reboot + Compiling and Installing the Kernel ------------------------------------- |