Re: [Qemu-ppc] [Qemu-devel] [PATCH 50/58] pseries: Update SLOF firmware image

[Anthony Liguori]

On 09/14/2011 07:28 AM, Peter Maydell wrote:
> On 14 September 2011 13:24, Alexander Graf<address@hidden>  wrote:
> > Am 14.09.2011 um 13:01 schrieb Peter Maydell<address@hidden>:
> > > I confess to not really understanding how we keep the git
> > > submodules and the binary blobs in sync, but shouldn't there
> > > be a reference in the commit message to the git commit hash
> > > for the slof sources corresponding to this blob, and maybe
> > > also an update to roms/SLOF here? (cf commit d67c3f2c for
> > > example) ?
> >
> > Oh? Since I have absolutely no idea on git submodules, it might
> > be helpful to add some description on how to do a blob update
> > into README?
>
> Sounds like a good idea -- I think Anthony is the expert here.

You should be able to just checkout the desired version of the submodule 
(you may need to refetch from git.qemu.org), then build the binary and 
copy the results to pc-bios/.  Then in the top level, do a single commit 
that includes the submodule commit change and the new binary blob.

For seabios, it would look something like:

$ cd roms/seabios
$ git checkout v0.7.0
$ make
$ cp out/bios.bin ../../pc-bios/bios.bin
$ cd ../..
$ git commit -a -m 'Update seabios to newest version'

I use the following script to generate the seabios commit message which 
gives a short summary of the changes:

#!/bin/sh

git --git-dir=roms/seabios/.git log --pretty=format:' - %h %s' $(git 
diff roms/seabios | grep '^-Subproject commit' | cut -f3 -d' ')..$(git 
diff roms/seabios | grep '^+Subproject commit' | cut -f3 -d' ')


Regards,

Anthony Liguori

> -- PMM