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

[Kyösti Mälkki (Code Review)]

Attention is currently required from: Anjaneya "Reddy" Chagam, Jonathan Zhang, Johnny Lin, Arthur Heymans, Morgan Jang.
Kyösti Mälkki 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:

(3 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/55046/comment/cf8d23f5_a729670f 
PS1, Line 11: - Bootguard/CBnT requires a 64 byte alignment
I thought reading comments once that Bootquard needed fixed bootblock size?

https://review.coreboot.org/c/coreboot/+/55046/comment/dc6c8d11_683dc460 
PS1, Line 12: - It can reduce the bootblock footprint as the size is aligned upwards
Is potential of 48 bytes saved worth mentioning?

File src/arch/x86/bootblock.ld:

https://review.coreboot.org/c/coreboot/+/55046/comment/5287a705_50dc614f 
PS1, Line 32: 	PROGRAM_SZ = SIZEOF(.text) + 512;
There is more potential to save size by decreasing from 512. But one value will not work for all platforms.