mirror of https://github.com/acidanthera/audk.git
146 lines
3.9 KiB
C
146 lines
3.9 KiB
C
/** @file
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Library instance for ExtendedHiiLib.
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This library instance implements the common HII routines which is
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related to HII but reference data structures that are not defined in
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UEFI specification, for example HII_VENDOR_DEVICE_PATH.
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Copyright (c) 2006 - 2008, Intel Corporation. <BR>
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <Uefi.h>
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#include <Protocol/DevicePath.h>
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#include <Library/DebugLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/DevicePathLib.h>
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#include <MdeModuleHii.h>
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//
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// Hii vendor device path template
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//
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GLOBAL_REMOVE_IF_UNREFERENCED CONST HII_VENDOR_DEVICE_PATH mHiiVendorDevicePathTemplate = {
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{
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{
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{
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HARDWARE_DEVICE_PATH,
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HW_VENDOR_DP,
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{
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(UINT8) (sizeof (HII_VENDOR_DEVICE_PATH_NODE)),
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(UINT8) ((sizeof (HII_VENDOR_DEVICE_PATH_NODE)) >> 8)
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}
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},
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EFI_IFR_TIANO_GUID
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},
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0,
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0
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},
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{
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END_DEVICE_PATH_TYPE,
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END_ENTIRE_DEVICE_PATH_SUBTYPE,
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{
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END_DEVICE_PATH_LENGTH
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}
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}
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};
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/**
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The HII driver handle passed in for HiiDatabase.NewPackageList() requires
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that there should be DevicePath Protocol installed on it.
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This routine create a virtual Driver Handle by installing a vendor device
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path on it, so as to use it to invoke HiiDatabase.NewPackageList().
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The Device Path created is a Vendor Device Path specific to Intel's implemenation
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and it is defined as HII_VENDOR_DEVICE_PATH_NODE.
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@param DriverHandle Handle to be returned
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@retval EFI_SUCCESS Handle destroy success.
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@retval EFI_OUT_OF_RESOURCES Not enough memory.
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**/
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EFI_STATUS
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EFIAPI
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HiiLibCreateHiiDriverHandle (
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OUT EFI_HANDLE *DriverHandle
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)
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{
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EFI_STATUS Status;
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HII_VENDOR_DEVICE_PATH_NODE *VendorDevicePath;
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VendorDevicePath = AllocateCopyPool (sizeof (HII_VENDOR_DEVICE_PATH), &mHiiVendorDevicePathTemplate);
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if (VendorDevicePath == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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//
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// Use memory address as unique ID to distinguish from different device paths
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//
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VendorDevicePath->UniqueId = (UINT64) ((UINTN) VendorDevicePath);
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*DriverHandle = NULL;
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Status = gBS->InstallMultipleProtocolInterfaces (
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DriverHandle,
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&gEfiDevicePathProtocolGuid,
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VendorDevicePath,
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NULL
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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return EFI_SUCCESS;
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}
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/**
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Destroy the Driver Handle created by CreateHiiDriverHandle().
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If no Device Path protocol is installed on the DriverHandle, then ASSERT.
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If this Device Path protocol is failed to be uninstalled, then ASSERT.
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@param DriverHandle Handle returned by CreateHiiDriverHandle()
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**/
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VOID
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EFIAPI
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HiiLibDestroyHiiDriverHandle (
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IN EFI_HANDLE DriverHandle
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)
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{
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EFI_STATUS Status;
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EFI_DEVICE_PATH_PROTOCOL *DevicePath;
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Status = gBS->HandleProtocol (
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DriverHandle,
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&gEfiDevicePathProtocolGuid,
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(VOID **) &DevicePath
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);
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ASSERT_EFI_ERROR (Status);
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Status = gBS->UninstallProtocolInterface (
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DriverHandle,
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&gEfiDevicePathProtocolGuid,
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DevicePath
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);
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ASSERT_EFI_ERROR (Status);
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FreePool (DevicePath);
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}
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