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UefiPayloadPkg: UefiPayload retrieve PCI root bridge from Guid Hob

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UefiPayload parse gUniversalPayloadPciRootBridgeInfoGuid Guid Hob to
retrieve PCI root bridges information.
gUniversalPayloadPciRootBridgeInfoGuid Guid Hob should be created by
Bootloader.

Cc: Maurice Ma <maurice.ma@intel.com>
Cc: Guo Dong <guo.dong@intel.com>
Cc: Benjamin You <benjamin.you@intel.com>
Reviewed-by: Guo Dong <guo.dong@intel.com>
Tested-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>
This commit is contained in:
Zhiguang Liu
2021-04-30 13:09:39 +08:00
committed by mergify[bot]
parent b597b6e24c
commit 99de2e7e03
5 changed files with 162 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
UefiPayloadPkg/Library/PciHostBridgeLib/PciHostBridge.h
View File

@@ -2,7 +2,7 @@
Header file of PciHostBridgeLib.
Copyright (C) 2016, Red Hat, Inc.
Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2016 - 2021, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -11,14 +11,38 @@
#ifndef _PCI_HOST_BRIDGE_H
#define _PCI_HOST_BRIDGE_H
#include <UniversalPayload/PciRootBridges.h>
typedef struct {
ACPI_HID_DEVICE_PATH AcpiDevicePath;
EFI_DEVICE_PATH_PROTOCOL EndDevicePath;
} CB_PCI_ROOT_BRIDGE_DEVICE_PATH;
/**
Scan for all root bridges in platform.
@param[out] NumberOfRootBridges Number of root bridges detected
@retval Pointer to the allocated PCI_ROOT_BRIDGE structure array.
**/
PCI_ROOT_BRIDGE *
ScanForRootBridges (
UINTN *NumberOfRootBridges
OUT UINTN *NumberOfRootBridges
);
/**
Scan for all root bridges from Universal Payload PciRootBridgeInfoHob
@param[in] PciRootBridgeInfo Pointer of Universal Payload PCI Root Bridge Info Hob
@param[out] NumberOfRootBridges Number of root bridges detected
@retval Pointer to the allocated PCI_ROOT_BRIDGE structure array.
**/
PCI_ROOT_BRIDGE *
RetrieveRootBridgeInfoFromHob (
IN UNIVERSAL_PAYLOAD_PCI_ROOT_BRIDGES *PciRootBridgeInfo,
OUT UINTN *NumberOfRootBridges
);
/**
@@ -77,4 +101,16 @@ InitRootBridge (
OUT PCI_ROOT_BRIDGE *RootBus
);
/**
Initialize DevicePath for a PCI_ROOT_BRIDGE.
@param[in] HID HID for device path
@param[in] UID UID for device path
@retval A pointer to the new created device patch.
**/
EFI_DEVICE_PATH_PROTOCOL *
CreateRootBridgeDevicePath (
IN UINT32 HID,
IN UINT32 UID
);
#endif