On Fri, Jan 23, 2015 at 11:38:04AM -0600, Rob Herring wrote: > On Fri, Dec 12, 2014 at 5:51 PM, Steve Rae <s...@broadcom.com> wrote: > > Implement a feature to allow fastboot to write the downloaded image > > to the space reserved for the Protective MBR and the Primary GUID > > Partition Table. > > Additionally, prepare and write the Backup GUID Partition Table. > > I've been looking at how to do the same thing here. This is an area > that suffers from each vendor doing whatever they want. Using vendor > download/flash tools here is painful. They are all different because > that is where the value add is. ;) What tool do you use on the host > side to create the image? I have seen some vendor code to do it, or > you could use parted plus a disk file and extract the partition table > from it. I find either method a bit fragile and non-standard IMHO. > > The 2 options I've come up with are 1) enable USB MS and use whatever > host side tool you like or 2) use the existing "gpt write" command in > u-boot and tie that into fastboot "oem format" command. The advantage > and disadvantage of the latter is that it hides the partitioning > details in u-boot from the user, but requires changing the u-boot env > to change partition layout. The partitioning requirements are pretty > SOC specific it seems. > > I'm not saying we can't support both, but having some standardization > here would be good.
Option two seems "good" from a not firewalling off the details point of view which means that there'll be a subset that wants to go with one anyhow. -- Tom
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