OpenBMC on eMMC NAND

[Adriana Kobylak]

On 2019-06-17 11:26, Adriana Kobylak wrote:
> Hi all,
> 
> Joel and I have been working on getting OpenBMC to run on an eMMC NAND.
> For the kernel, there'll be some patches coming to support it.
> For the rootfs, the proposal is to have an ext4 filesystem, and use
> lvm for volume management, which allows for dynamic partitioning.

I'll be filling up a design doc to document this proposal. Also we don't
have documentation for the currently supported filesystems, so I'll be
pushing up new docs based on Milton's writeup[2] to document the 
existing
implementations. The initial commit to propose a subdir to hold these
upcoming docs is in gerrit for review[3].

> For proof of concept, we're starting to build an ext4 BMC image for
> IBM's system Swift[1]. Up next is creating an initramfs that supports
> lvm, and update the code update apps to handle ext4 images and lvm
> volumes. Thinking of creating an 'lvm' or 'ext4' distro feature like
> the 'ubi' one to enable this new support during build time.
> Let us know if there are any opinions, questions, or interest. Look
> for updates on the mailing list as we continue to make progress.
> 
> 
> [1] https://gerrit.openbmc-project.xyz/c/openbmc/meta-ibm/+/22436

[2] https://lists.ozlabs.org/pipermail/openbmc/2017-August/008703.html
[3] https://gerrit.openbmc-project.xyz/c/openbmc/docs/+/22666