ShellPkg/Library/UefiShellLevel1CommandsLib/Stall.c

   1 /** @file
   2   Main file for stall shell level 1 function.
   3
   4   (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
   5   Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
   6   This program and the accompanying materials
   7   are licensed and made available under the terms and conditions of the BSD License
   8   which accompanies this distribution.  The full text of the license may be found at
   9   http://opensource.org/licenses/bsd-license.php
  10
  11   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14 **/
  15
  16 #include "UefiShellLevel1CommandsLib.h"
  17
  18 /**
  19   Function for 'stall' command.
  20
  21   @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  22   @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
  23 **/
  24 SHELL_STATUS
  25 EFIAPI
  26 ShellCommandRunStall (
  27   IN EFI_HANDLE        ImageHandle,
  28   IN EFI_SYSTEM_TABLE  *SystemTable
  29   )
  30 {
  31   EFI_STATUS          Status;
  32   LIST_ENTRY          *Package;
  33   CHAR16              *ProblemParam;
  34   SHELL_STATUS        ShellStatus;
  35   UINT64              Intermediate;
  36
  37   ShellStatus         = SHELL_SUCCESS;
  38
  39   //
  40   // initialize the shell lib (we must be in non-auto-init...)
  41   //
  42   Status = ShellInitialize();
  43   ASSERT_EFI_ERROR(Status);
  44
  45   Status = CommandInit();
  46   ASSERT_EFI_ERROR(Status);
  47
  48   //
  49   // parse the command line
  50   //
  51   Status = ShellCommandLineParse (EmptyParamList, &Package, &ProblemParam, TRUE);
  52   if (EFI_ERROR(Status)) {
  53     if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
  54       ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel1HiiHandle, L"stall", ProblemParam);
  55       FreePool(ProblemParam);
  56       ShellStatus = SHELL_INVALID_PARAMETER;
  57     } else {
  58       ASSERT(FALSE);
  59     }
  60   } else {
  61     if (ShellCommandLineGetRawValue(Package, 2) != NULL) {
  62       ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellLevel1HiiHandle, L"stall");
  63       ShellStatus = SHELL_INVALID_PARAMETER;
  64     } else if (ShellCommandLineGetRawValue(Package, 1) == NULL) {
  65       ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_FEW), gShellLevel1HiiHandle, L"stall");
  66       ShellStatus = SHELL_INVALID_PARAMETER;
  67     } else {
  68       Status = ShellConvertStringToUint64(ShellCommandLineGetRawValue(Package, 1), &Intermediate, FALSE, FALSE);
  69       if (EFI_ERROR(Status) || ((UINT64)(UINTN)(Intermediate)) != Intermediate) {
  70         ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PARAM_INV), gShellLevel1HiiHandle, L"stall", ShellCommandLineGetRawValue(Package, 1));
  71         ShellStatus = SHELL_INVALID_PARAMETER;
  72       } else {
  73         Status = gBS->Stall((UINTN)Intermediate);
  74         if (EFI_ERROR(Status)) {
  75           ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_STALL_FAILED), gShellLevel1HiiHandle, L"stall");
  76           ShellStatus = SHELL_DEVICE_ERROR;
  77         }
  78       }
  79     }
  80     ShellCommandLineFreeVarList (Package);
  81   }
  82   return (ShellStatus);
  83 }
  84