On 08.08.2019 11:21, Persmule wrote: > Thanks Micha, > > The exemplar fmd you linked is very close to the simplest scheme I > imagine. > > I may be going to work on the build system, in order to generate such > fmd automatically in the future, since there is a Kconfig variable > CBFS_SIZE which actually stands for the size of SI_BIOS section, and > sizes of SI_DESC, SI_GBE and SI_ME section can be inspected from the > IFD file via ifdtool. That would be very useful. Contributions welcome. > > On Thursday, August 8, 2019 8:12 AM, Michal Zygowski > <michal.zygow...@3mdeb.com> wrote: > >> Yes, if you are interested entirely in measured boot mode only, the >> RO section is sufficient. >> >> The GBB is much greater since ChromeOS recovery bitmaps resides >> there. For non-ChromeOS devices (like many Lenovo laptops implement >> in coreboot) I saw min 120KiB (0x1e000). Should be sufficient. >> Example fmap description of flash with RO section: >> https://github.com/coreboot/coreboot/blob/master/src/mainboard/ocp/wedge100s/vboot-ro.fmd >> (probably you would like to adjust some offsets and sizes) > > Best regards, > > _______________________________________________ > coreboot mailing list -- coreboot@coreboot.org > To unsubscribe send an email to coreboot-le...@coreboot.org
-- Michał Żygowski Firmware Engineer http://3mdeb.com | @3mdeb_com
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