Bananapi eMMC support

[mattiaswal]

Description

Checklist

Tick relevant boxes, this PR is-a or has-a:

• Bugfix
  • Regression tests
  • ChangeLog updates (for next release)
• Feature
  • YANG model change => revision updated?
  • Regression tests added?
  • ChangeLog updates (for next release)
  • Documentation added?
• Test changes
  • Checked in changed Readme.adoc (make test-spec)
  • Added new test to group Readme.adoc and yaml file
• Code style update (formatting, renaming)
• Refactoring (please detail in commit messages)
• Build related changes
• Documentation content changes
  • ChangeLog updated (for major changes)
• Other (please describe):

[wkz]

Not sure if it makes sense or not, but the standard scripts do check for a board-specific syslinux.conf before falling back to the generic one:

infix/board/common/uboot/scripts/ixbootslot.sh

Lines 37 to 41 in 0328700

	for conf in "${board}-syslinux.conf syslinux.conf"; do
	if test -e blkmap ${blkmapnum} /boot/syslinux/${conf}; then
	sysboot blkmap ${blkmapnum} any ${scriptaddr} /boot/syslinux/${conf}
	fi
	done

[mattiaswal]

It is still the same board SD/eMMC. Both are bananapi-r3. But I do not see any need for it now anyway.

Not sure if it makes sense or not, but the standard scripts do check for a board-specific syslinux.conf before falling back to the generic one:

infix/board/common/uboot/scripts/ixbootslot.sh

Lines 37 to 41 in 0328700

	for conf in "${board}-syslinux.conf syslinux.conf"; do
	if test -e blkmap ${blkmapnum} /boot/syslinux/${conf}; then
	sysboot blkmap ${blkmapnum} any ${scriptaddr} /boot/syslinux/${conf}
	fi
	done

[mattiaswal]

Please test the flow described in the Readme.md @troglobit.

[troglobit]

Please test the flow described in the Readme.md @troglobit.

Made it work this morning. But the experience was horrifying! 😨 We just have to improve the UX on this one .. or at least fix up the genimage.cfg.in and mkimage.sh tooling to create ready-made emmc image, because just that took me an hour of getting stuck before I got it working.

[troglobit]

Nice work on this! I tried updating the README.md a bit and also fixed up mkimage.sh to support eMMC for use in the workflow.

We should test the workflow and instructions before merging this, I've just verified it all works locally.