mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-18 15:27:48 +01:00
150 lines
4.2 KiB
C
150 lines
4.2 KiB
C
/** @file
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Driver for dumping boot loader UEFI calls.
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By dmazar, 26/09/2012
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**/
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#include <Library/UefiLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/DebugLib.h>
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#include <Library/DevicePathLib.h>
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#include <Library/PeCoffLib.h>
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#include <Protocol/LoadedImage.h>
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//#include <Protocol/Runtime.h>
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#include "Common.h"
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/** Original StartImage UEFI method. */
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EFI_IMAGE_START OrgStartImage = NULL;
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/** Installs our overrides of UEFI services.*/
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EFI_STATUS
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StartOverrides()
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{
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EFI_TIME Now;
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gRT->GetTime(&Now, NULL);
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PRINT("DumpUefiCalls overrides started on %04d.%02d.%02d (yyyy.mm.dd), at %02d:%02d:%02d.\n",
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Now.Year, Now.Month, Now.Day, Now.Hour, Now.Minute, Now.Second);
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#if CAPTURE_FILESYSTEM_ACCESS == 1
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OvrFs();
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#endif
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OvrBootServices(gBS);
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OvrRuntimeServices(gRT);
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#if PRINT_DUMPS >= 2
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// OvrDataHub();
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#endif
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OvrAppleSMC();
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// OvrAppleImageCodec();
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OvrAppleKeyState();
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// OvrOSInfo();
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// OvrGraphConfig();
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// OvrFirmwareVolume();
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// OvrEfiKeyboardInfo();
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OvrAppleKeyMapDb();
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return EFI_SUCCESS;
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}
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CHAR16 *BootLoaders[] = BOOT_LOADERS;
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/** Our implementation of StartImage. Used to detect boot loader start. */
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EFI_STATUS EFIAPI
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OStartImage(
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IN EFI_HANDLE ImageHandle,
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OUT UINTN *ExitDataSize,
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OUT CHAR16 **ExitData OPTIONAL
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)
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{
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EFI_STATUS Status;
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EFI_LOADED_IMAGE_PROTOCOL *Image;
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CHAR16 *FilePathText = NULL;
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// CHAR16 *BootLoaders[] = BOOT_LOADERS;
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UINTN Index;
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PRINT("->StartImage(0x%lx, , )\n", ImageHandle);
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//
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// Get gEfiLoadedImageProtocolGuid for image that is starting
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//
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Status = gBS->OpenProtocol (
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ImageHandle,
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&gEfiLoadedImageProtocolGuid,
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(VOID **) &Image,
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gImageHandle,
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NULL,
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EFI_OPEN_PROTOCOL_GET_PROTOCOL
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);
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if (Status != EFI_SUCCESS) {
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PRINT("ERROR: OStartImage: OpenProtocol(gEfiLoadedImageProtocolGuid) = %r\n", Status);
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return EFI_INVALID_PARAMETER;
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}
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//
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// Extract file path from image device file path
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//
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FilePathText = FileDevicePathToText(Image->FilePath);
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if (FilePathText == NULL) {
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PRINT("ERROR: OStartImage: image file path is NULL. Use direct start\n");
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Status = gBS->CloseProtocol(ImageHandle, &gEfiLoadedImageProtocolGuid, gImageHandle, NULL);
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if (EFI_ERROR(Status)) {
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PRINT("CloseProtocol error: %r\n", Status);
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}
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} else {
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PRINT(" File: %s\n", FilePathText);
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PRINT(" Image: %p - %x (%x)\n", Image->ImageBase, (UINTN)Image->ImageBase + Image->ImageSize, Image->ImageSize);
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Status = gBS->CloseProtocol(ImageHandle, &gEfiLoadedImageProtocolGuid, gImageHandle, NULL);
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if (EFI_ERROR(Status)) {
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PRINT("CloseProtocol error: %r\n", Status);
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}
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//
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// Check if this is some known boot manager/loader
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//
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for (Index = 0; BootLoaders[Index] != NULL && !StrStriBasic(FilePathText, BootLoaders[Index]); Index++);
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if (BootLoaders[Index] != NULL) {
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//
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// it is
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// restore original StartImage
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// and start our overrides
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//
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gBS->StartImage = OrgStartImage;
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StartOverrides();
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PRINT("\nSTARTING: %s\n\n", FilePathText);
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}
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}
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//
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// Start image by calling original StartImage
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//
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Status = OrgStartImage(ImageHandle, ExitDataSize, ExitData);
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if (FilePathText) {
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FreePool(FilePathText);
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}
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return Status;
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}
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/** Driver's entry point. Installs our StartImage to detect boot loader start. */
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EFI_STATUS
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EFIAPI
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DumpUefiCallsEntrypoint (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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//
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// Override StartImage
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// other overrides will be done from there when boot loader is started
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//
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OrgStartImage = gBS->StartImage;
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gBS->StartImage = OStartImage;
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gBS->Hdr.CRC32 = 0;
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gBS->CalculateCrc32(gBS, gBS->Hdr.HeaderSize, &gBS->Hdr.CRC32);
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return EFI_SUCCESS;
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}
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