tree 11ca21e52e8309ba69c781c855e0ba808e671e82
parent b7f92a0b6a0f776d00cf7843156034c22f403c78
author Jonathan Zhang <jonzhang@fb.com> 1652299880 -0700
committer Martin L Roth <gaumless@gmail.com> 1668965704 +0000

acpi: Add initial support for CEDT

Add initial CEDT (CXL Early Discovery Table) support based on
CXL spec 2.0 section 9.14.1.

Add functions to create CEDT table (revision 1), and create CEDT
CXL Host Bridge Structure (CHBS) and CXL Fixed Memory Windows
Structure (CFMWS).

TESTED=Create CEDT table on Intel Archer City CRB, dumped the
CEDT table and examined the content.

Signed-off-by: Jonathan Zhang <jonzhang@fb.com>
Change-Id: I4fbce78efc86ad9f2468c37b4827a6dadbdc6802
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64263
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Marc Jones <marc@marcjonesconsulting.com>