[coreboot-gerrit] [S] Change in coreboot[main]: mb/qemu-{i440fx,q35}: reduce default ROM size to 8M

[Sergii Dmytruk (Code Review)]

Attention is currently required from: Krystian Hebel, Maciej Pijanowski, Michał Kopeć, Michał Żygowski, Patrick Rudolph.

Sergii Dmytruk has posted comments on this change by Krystian Hebel. ( https://review.coreboot.org/c/coreboot/+/82639?usp=email )

Change subject: mb/qemu-{i440fx,q35}: reduce default ROM size to 8M
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Patch Set 2:

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/82639/comment/10d31365_ef3559aa?usp... :
PS1, Line 9: QEMU doesn't allow to use bigger images with '-drive if=pflash', which
> No idea why, I guess this was a design decision made by QEMU. […]

After facing this error recently I found a failed attempt to increase the size in https://lists.gnu.org/archive/html/qemu-devel/2020-09/msg04146.html, wanted to link to modern version of that code now and found https://gitlab.com/qemu-project/qemu/-/commit/0657c657eb37bb48bfd9fe3ae8a323....  There seems to be `max-fw-size` machine option for more than 3 years, which is present in `qemu-system-x86_64 -M q35,help` output but search at https://www.qemu.org/docs/master/index.html doesn't find it.

The default is still 8 MiB though, so this change still improves usability.