tree b41247b0cc28e657fcae386f5c238f5df6224386
parent 28315f82040339c94941e17fcbe64c939e3a5994
author Usha P <usha.p@intel.com> 1647578417 +0530
committer Felix Held <felix-coreboot@felixheld.de> 1650546384 +0000

mb/intel/adlrvp: Set half_populated true for ADL-N

Alder Lake-N has single memory controller with 64-bit bus width. Alder
Lake common meminit block driver considers bus width to be 128-bit and
populates the meminit data accordingly. By setting half_populated to
true, only the bottom half is populated.

Ideally, half_populated is used in platforms with multiple channels to
enable only one half of the channel. Alder Lake N has single channel,
and it would require for new structures to be defined in meminit block
driver for LPx memory configurations. In order to avoid adding new
structures, set half_populated to true. This has the same effect as
having single channel with 64-bit width.

BRANCH=NONE
TEST=Build and boot ADL-N RVP.

Signed-off-by: Usha P <usha.p@intel.com>
Change-Id: I2ecc3018a1ab039990ba47898ff0e0e2ede695cc
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62913
Reviewed-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>