alder_lake_bios/Intel/AlderLake/AlderLakeChipsetPkg/HybridGraphicsAcpi/OpRegion/HgOpRegion.asl

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/** @file
;******************************************************************************
;* Copyright (c) 2018 - 2021, Insyde Software Corp. All Rights Reserved.
;*
;* You may not reproduce, distribute, publish, display, perform, modify, adapt,
;* transmit, broadcast, present, recite, release, license or otherwise exploit
;* any part of this publication in any form, by any means, without the prior
;* written permission of Insyde Software Corporation.
;*
;******************************************************************************
*/
Scope (PCI_SCOPE) {
OperationRegion (HGOP, SystemMemory, 0x55AA55AA, 0x55AA55AA)
Field (HGOP, AnyAcc, Lock, Preserve)
{
DGDA, 32, // dGPU device's PCIe Base Address
DGBA, 32, // dGPU bridge's PCIe Base Address
OPTF, 8, // Optimus flag
NVGE, 8, // Nvidia dGPU Generation
DSSV, 32, // dGPU SSID SVID
DISM, 8, // DIS_MODE_FLAG: ACPI flag reflect to SBIOS option.
HGST, 8, // HgSlot selection between PCH/PEG
}
}