Exemple #1
0
EFI_STATUS
EblDumpFdt (
  IN UINTN  Argc,
  IN CHAR8  **Argv
  )
{
  EFI_STATUS  Status;
  VOID        *FdtBlob;
  UINTN       Ret;

  // If no FDT file is passed to the argument then get the one from the platform
  if (Argc < 2) {
    Status = EfiGetSystemConfigurationTable (&gFdtTableGuid, &FdtBlob);
    if (EFI_ERROR (Status)) {
      Print (L"ERROR: Did not find the Fdt Blob.\n");
      return Status;
    }
  } else {
    return EFI_NOT_FOUND;
  }

  Ret = fdt_check_header (FdtBlob);
  if (Ret != 0) {
    Print (L"ERROR: Device Tree header not valid (err:%d)\n", Ret);
    return EFI_INVALID_PARAMETER;
  }

  DumpFdt (FdtBlob);

  return EFI_SUCCESS;
}
Exemple #2
0
/**
  This is the shell command "dumpfdt" handler function. This function handles
  the command when it is invoked in the shell.

  @param[in]  This             The instance of the
                               EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL.
  @param[in]  SystemTable      The pointer to the UEFI system table.
  @param[in]  ShellParameters  The parameters associated with the command.
  @param[in]  Shell            The instance of the shell protocol used in the
                               context of processing this command.

  @return  SHELL_SUCCESS            The operation was successful.
  @return  SHELL_ABORTED            Operation aborted due to internal error.
  @return  SHELL_NOT_FOUND          Failed to locate the Device Tree into the EFI Configuration Table
  @return  SHELL_OUT_OF_RESOURCES   A memory allocation failed.

**/
SHELL_STATUS
EFIAPI
ShellDynCmdDumpFdtHandler (
  IN EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL  *This,
  IN EFI_SYSTEM_TABLE                    *SystemTable,
  IN EFI_SHELL_PARAMETERS_PROTOCOL       *ShellParameters,
  IN EFI_SHELL_PROTOCOL                  *Shell
  )
{
  SHELL_STATUS  ShellStatus;
  EFI_STATUS    Status;
  VOID          *FdtBlob;

  ShellStatus  = SHELL_SUCCESS;

  //
  // Install the Shell and Shell Parameters Protocols on the driver
  // image. This is necessary for the initialisation of the Shell
  // Library to succeed in the next step.
  //
  Status = gBS->InstallMultipleProtocolInterfaces (
                  &gImageHandle,
                  &gEfiShellProtocolGuid, Shell,
                  &gEfiShellParametersProtocolGuid, ShellParameters,
                  NULL
                  );
  if (EFI_ERROR (Status)) {
    return SHELL_ABORTED;
  }

  //
  // Initialise the Shell Library as we are going to use it.
  // Assert that the return code is EFI_SUCCESS as it should.
  // To anticipate any change is the codes returned by
  // ShellInitialize(), leave in case of error.
  //
  Status = ShellInitialize ();
  if (EFI_ERROR (Status)) {
    ASSERT_EFI_ERROR (Status);
    return SHELL_ABORTED;
  }

  Status = EfiGetSystemConfigurationTable (&gFdtTableGuid, &FdtBlob);
  if (EFI_ERROR (Status)) {
    Print (L"ERROR: Did not find the Fdt Blob.\n");
    return EfiCodeToShellCode (Status);
  }

  DumpFdt (FdtBlob);

  gBS->UninstallMultipleProtocolInterfaces (
         gImageHandle,
         &gEfiShellProtocolGuid, Shell,
         &gEfiShellParametersProtocolGuid, ShellParameters,
         NULL
         );

  return ShellStatus;
}