[coreboot] Where to find the coreboot_extra_version value

[Agrain Patrick]

Hello,

I would be interested to find out where the coreboot extra version is computed.

Banner example:
coreboot-4.4-241-g451b1e0-dirty-ALE-CPU8 Tue May 17 04:18:17 UTC 2016 ramstage starting...
                                 |------- From inside config file
                           |------------- From git describe --dirty command
                     |------------------- This also comes from git.
              |-------------------------- And this ????

Thanks.
Best regards,
Patrick Agrain