[SeaBIOS] [PATCH] coreboot: Add support for FMAP and multiple CBFS

Kevin O'Connor kevin at koconnor.net
Thu Mar 10 16:10:10 CET 2016

On Wed, Mar 09, 2016 at 12:19:43PM -0600, Ben Gardner wrote:
> ROM images with a FMAP may have multiple CBFS.
> Scan all available CBFS so that, say, a SeaBIOS bootable image doesn't
> have to be in the main CBFS.
> Coreboot puts the FMAP location in the BOOT_MEDIA_PARAMS entry in the
> coreboot table. We can grab that and can all regions for CBFS files.

Thanks.  Can you provide some additional background information on how
this is intended to work.  If multiple CBFS locations are found, is
there a chance of file name conflicts?  Is the fmap stuff used for
primary/backup rom images and if so how will seabios account for that
if it scans both images?

Also, can you describe the high level use case you had in mind.


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