Summary of Fedora on Odroid XU4

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Summary of Fedora on Odroid XU4

1. with Kernel 4.6.5-300.fc24 system boots without failure, but update to newer kernel fails due dracut didn't build suitable intramfs
   https://bugzilla.redhat.com/show_bug.cgi?id=1482825
2. newer kernel works only with "cpuidle.off=1" inserted into the "append" kernel line in the /boot/extlinux/extlinux.conf file, but all USB3 Hosts failed, no onboard ethernet
3. To boot the system from the eMMC card:
   A. The initramfs image file must be rebuilt.  The simplest way is to:
       a. Boot up using the MicroSD card;
b. Partition the eMMC card such that partition 1 begins on sector 3072 (Default starting sector from fdisk is 2048). There should be 4 partitions created; c. Mount the Fedora image desired to be installed on the eMMC card; d. Copy all partition data from the mounted fedora image partitions (there are 4 for Fedora 26 ARM images) to the appropriate eMMC partitions; e. Update the UUID values on what will be the /boot/extlinux/extlinux.conf file and /etc/fstab files of the eMMC card;
       f. Assuming the eMMC partitions are mounted as such --
             mount /dev/mmcblk1p4 /mnt
             mount /dev/mmcblk1p2 /mnt/boot
          then perform the following mounts --
             mount -o bind /proc /mnt/proc
             mount -o bind /dev /mnt/dev
             mount -o bind /sys /mnt/sys
B. Rebuild the eMMC card's initramfs by executing the following command: chroot /mnt dracut --add-drivers='pwrseq_emmc mmc_block' /boot/initramfs-4.11.8-300.fc26.armv7hl.img 4.11.8-300.fc26.armv7hl
   C.  Flash the boot information in the header of the eMMC card;
   C.  Shutdown the system, then remove the MicroSD card;
   D.  Boot up using the eMMC card.

4. If the system is to be updated using "dnf update", a new initramfs image must again be generated. This can be done using steps 1f - B. above using the new initramfs and kernel images provided by the "dnf update".

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Note to the developers/maintainers of dracut:
The kernel modules "pwrseq_emmc" and "mmc_block" should be included in dracut for the Odroid-XU3 and Odroid-XU4 such that the user need not have to execute this procedure each time and update to the system is performed.



Is this correct and complete ?

Andreas
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