mirror of https://github.com/acidanthera/audk.git
151 lines
4.5 KiB
C
151 lines
4.5 KiB
C
/** @file
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The entry of the embedded BDS. This BDS does not follow the Boot Manager requirements
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of the UEFI specification as it is designed to implement an embedded systmes
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propriatary boot scheme.
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This template assume a DXE driver produces a SerialIo protocol not using the EFI
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driver module and it will attempt to connect a console on top of this.
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Copyright (c) 2009, Apple Inc. All rights reserved.<BR>
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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 "BdsEntry.h"
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EFI_STATUS
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FindApplicationMatchingUiSection (
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IN CHAR16 *UiString,
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OUT EFI_HANDLE *FvHandle,
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OUT EFI_GUID *NameGuid
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)
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{
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EFI_STATUS Status;
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EFI_STATUS NextStatus;
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UINTN NoHandles;
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EFI_HANDLE *Buffer;
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UINTN Index;
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EFI_FV_FILETYPE FileType;
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EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv;
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VOID *Key;
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EFI_FV_FILE_ATTRIBUTES Attributes;
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UINTN Size;
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UINTN UiStringLen;
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CHAR16 *UiSection;
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UINT32 Authentication;
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UiStringLen = 0;
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if (UiString != NULL) {
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DEBUG ((DEBUG_ERROR, "UiString %s\n", UiString));
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UiStringLen = StrLen (UiString);
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}
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Status = gBS->LocateHandleBuffer (ByProtocol, &gEfiFirmwareVolume2ProtocolGuid, NULL, &NoHandles, &Buffer);
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if (!EFI_ERROR (Status)) {
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for (Index = 0; Index < NoHandles; Index++) {
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Status = gBS->HandleProtocol (Buffer[Index], &gEfiFirmwareVolume2ProtocolGuid, (VOID **)&Fv);
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if (!EFI_ERROR (Status)) {
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Key = AllocatePool (Fv->KeySize);
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ASSERT (Key != NULL);
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ZeroMem (Key, Fv->KeySize);
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FileType = EFI_FV_FILETYPE_APPLICATION;
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do {
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NextStatus = Fv->GetNextFile (Fv, Key, &FileType, NameGuid, &Attributes, &Size);
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if (!EFI_ERROR (NextStatus)) {
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if (UiString == NULL) {
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//
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// If UiString is NULL match first application we find.
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//
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*FvHandle = Buffer[Index];
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FreePool (Key);
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return Status;
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}
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UiSection = NULL;
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Status = Fv->ReadSection (
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Fv,
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NameGuid,
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EFI_SECTION_USER_INTERFACE,
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0,
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(VOID **)&UiSection,
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&Size,
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&Authentication
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);
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if (!EFI_ERROR (Status)) {
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if (StrnCmp (UiString, UiSection, UiStringLen) == 0) {
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//
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// We found a UiString match.
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//
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*FvHandle = Buffer[Index];
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FreePool (Key);
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FreePool (UiSection);
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return Status;
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}
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FreePool (UiSection);
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}
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}
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} while (!EFI_ERROR (NextStatus));
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FreePool (Key);
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}
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}
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FreePool (Buffer);
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}
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return EFI_NOT_FOUND;
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}
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EFI_DEVICE_PATH *
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FvFileDevicePath (
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IN EFI_HANDLE FvHandle,
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IN EFI_GUID *NameGuid
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)
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{
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EFI_DEVICE_PATH_PROTOCOL *DevicePath;
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MEDIA_FW_VOL_FILEPATH_DEVICE_PATH NewNode;
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DevicePath = DevicePathFromHandle (FvHandle);
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EfiInitializeFwVolDevicepathNode (&NewNode, NameGuid);
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return AppendDevicePathNode (DevicePath, (EFI_DEVICE_PATH_PROTOCOL *)&NewNode);
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}
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EFI_STATUS
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LoadPeCoffSectionFromFv (
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IN EFI_HANDLE FvHandle,
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IN EFI_GUID *NameGuid
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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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EFI_HANDLE ImageHandle;
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DevicePath = FvFileDevicePath (FvHandle, NameGuid);
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Status = gBS->LoadImage (TRUE, gImageHandle, DevicePath, NULL, 0, &ImageHandle);
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if (!EFI_ERROR (Status)) {
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PERF_END (NULL, "BDS", NULL, 0);
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Status = gBS->StartImage (ImageHandle, NULL, NULL);
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}
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return Status;
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}
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