tree e074b73d6fc340d7ddaeea63867bf32b5f45958b
parent b6d7a12d0f4ddc1ace350dc16b754835727839c0
author Angel Pons <th3fanbus@gmail.com> 1610739291 +0100
committer Patrick Georgi <pgeorgi@google.com> 1614166896 +0000

nb/intel/ironlake: Correct `set_4cf`

We only need to toggle one bit at a time. Introduce `rmw_500` to
simplify the code. The rank population doesn't seem to matter.

Tested on out-of-tree HP 630, still boots.

Change-Id: Ic1a680dae90889c84c9b2c536745e254475ff878
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49577
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>