tree 6ecbb219bf48422b94a9e6ccdc89ba87a9a1bf16
parent b39e93e56fdd2b11b8e7a12889472f144673d05a
author Felix Held <felix-coreboot@felixheld.de> 1686004198 +0200
committer Felix Held <felix-coreboot@felixheld.de> 1686096330 +0000

soc/amd/common/block/cpu/noncar: add get_usable_physical_address_bits()

In case the secure memory encryption is enabled, some of the upper
usable address bits of the host can't be used any more. Bits 11..6 in
CPUID_EBX_MEM_ENCRYPT indicate how many of the address bits are taken
away from the usable address bits in the case the secure memory
encryption is enabled.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ia810b0984972216095da2ad8f9c19e37684f2a2e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75623
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>