[coreboot-gerrit] Change in coreboot[master]: arch/x86/bootblock.ld: Align the bottom of the bootblock to 64 bytes

[Arthur Heymans (Code Review)]

Attention is currently required from: Anjaneya "Reddy" Chagam, Jonathan Zhang, Johnny Lin, Morgan Jang, Kyösti Mälkki.
Arthur Heymans has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/55046 )

Change subject: arch/x86/bootblock.ld: Align the bottom of the bootblock to 64 bytes
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Patch Set 1:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/55046/comment/ed447e4f_f788cdb7 
PS1, Line 11: - Bootguard/CBnT requires a 64 byte alignment
> I thought reading comments once that Bootquard needed fixed bootblock size?

I was not correct. The open source Btg/CBnT tooling was quite crude then. The tooling improved and is now coreboot/cbfs aware and can detect bootblock automatically.

https://review.coreboot.org/c/coreboot/+/55046/comment/f370995a_4e072035 
PS1, Line 12: - It can reduce the bootblock footprint as the size is aligned upwards
> Is potential of 48 bytes saved worth mentioning?

Not really.