[coreboot-gerrit] Change in coreboot[master]: Makefile.inc: Add Boot Guard IBB logic for CBFS files

[Michał Żygowski (Code Review)]

Michał Żygowski has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/43394 )

Change subject: Makefile.inc: Add Boot Guard IBB logic for CBFS files
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Patch Set 1:

(1 comment)

https://review.coreboot.org/c/coreboot/+/43394/1/Makefile.inc 
File Makefile.inc:

https://review.coreboot.org/c/coreboot/+/43394/1/Makefile.inc@719 
PS1, Line 719: BTGIBB
> can't this be merged with TXTIBB. […]

TXTIBB sets a little bit more than Boot Guard. Although according to the spec IBB should initialize memory, IMO it is not necessary if we start measured/verified boot in botoblock. That was my motivation for separate IBB. Also there is a limit of FIT entries for Skylake equal 10. This amount of IBB elements would not fit into the table.