tree 43b63d19d9d7395a6f25910703cd9dbf9110a461
parent ce87832c6662f1060855fd82a00c4a8e47758fe6
author Cliff Huang <cliff.huang@intel.com> 1645659812 -0800
committer Felix Held <felix-coreboot@felixheld.de> 1646956636 +0000

drivers/pcie/generic: Add support to generate code under companion device instead

Only one ACPI device should be added to a PCIe root port. For the root
ports which already have device created, the generated code from this
driver needs to be merged with the existing device.

By default, this driver will create new device named DEV0.
This change allows to generate code under an existing device.

ex: (generate code under PXSX):
    Scope (\_SB.PCI0.RP01.PXSX)
    {
        Name (_DSD, Package (0x02)  // _DSD: Device-Specific Data
        {
            ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301")
            Package (0x01)
            {
                Package (0x02)
                {
                    "UntrustedDevice",
                    One
                }
            }
        })
    }

BUG=b:221250331
BRANCH=firmware-brya-14505.B

Signed-off-by: Cliff Huang <cliff.huang@intel.com>
Change-Id: I80634bbfc2927f26f2a55a9c244eca517c437079
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62301
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>