UnixPkg/ResetRuntimeDxe/Reset.c

   1 /*++
   2
   3 Copyright (c) 2004 - 2009, Intel Corporation. All rights reserved.<BR>
   4 This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13
  14  Reset.c
  15
  16 Abstract:
  17
  18   Reset Architectural Protocol as defined in Tiano under UNIX Emulation
  19
  20 --*/
  21
  22 #include "PiDxe.h"
  23 #include "UnixDxe.h"
  24 #include <Protocol/Reset.h>
  25
  26 #include <Library/BaseLib.h>
  27 #include <Library/DebugLib.h>
  28 #include <Library/UefiLib.h>
  29 #include <Library/UefiDriverEntryPoint.h>
  30 #include <Library/UnixLib.h>
  31 #include <Library/MemoryAllocationLib.h>
  32 #include <Library/UefiBootServicesTableLib.h>
  33
  34 EFI_STATUS
  35 EFIAPI
  36 InitializeUnixReset (
  37   IN EFI_HANDLE        ImageHandle,
  38   IN EFI_SYSTEM_TABLE  *SystemTable
  39   );
  40
  41 VOID
  42 EFIAPI
  43 UnixResetSystem (
  44   IN EFI_RESET_TYPE   ResetType,
  45   IN EFI_STATUS       ResetStatus,
  46   IN UINTN            DataSize,
  47   IN VOID             *ResetData OPTIONAL
  48   );
  49
  50 EFI_STATUS
  51 EFIAPI
  52 InitializeUnixReset (
  53   IN EFI_HANDLE        ImageHandle,
  54   IN EFI_SYSTEM_TABLE  *SystemTable
  55   )
  56 /*++
  57
  58 Routine Description:
  59
  60
  61 Arguments:
  62
  63   ImageHandle of the loaded driver
  64   Pointer to the System Table
  65
  66 Returns:
  67
  68   Status
  69 --*/
  70 // TODO:    SystemTable - add argument and description to function comment
  71 {
  72   EFI_STATUS  Status;
  73   EFI_HANDLE  Handle;
  74
  75   SystemTable->RuntimeServices->ResetSystem = UnixResetSystem;
  76
  77   Handle = NULL;
  78   Status = gBS->InstallMultipleProtocolInterfaces (
  79                   &Handle,
  80                   &gEfiResetArchProtocolGuid,
  81                   NULL,
  82                   NULL
  83                   );
  84   ASSERT_EFI_ERROR (Status);
  85
  86   return Status;
  87 }
  88
  89 VOID
  90 EFIAPI
  91 UnixResetSystem (
  92   IN EFI_RESET_TYPE   ResetType,
  93   IN EFI_STATUS       ResetStatus,
  94   IN UINTN            DataSize,
  95   IN VOID             *ResetData OPTIONAL
  96   )
  97 /*++
  98
  99 Routine Description:
 100
 101   TODO: Add function description
 102
 103 Arguments:
 104
 105   ResetType   - TODO: add argument description
 106   ResetStatus - TODO: add argument description
 107   DataSize    - TODO: add argument description
 108   ResetData   - TODO: add argument description
 109
 110 Returns:
 111
 112   EFI_SUCCESS - TODO: Add description for return value
 113
 114 --*/
 115 {
 116   EFI_STATUS  Status;
 117   UINTN       HandleCount;
 118   EFI_HANDLE  *HandleBuffer;
 119   UINTN       Index;
 120
 121   //
 122   // Disconnect all
 123   //
 124   Status = gBS->LocateHandleBuffer (
 125                   AllHandles,
 126                   NULL,
 127                   NULL,
 128                   &HandleCount,
 129                   &HandleBuffer
 130                   );
 131   if (!EFI_ERROR (Status)) {
 132     for (Index = 0; Index < HandleCount; Index++) {
 133       Status = gBS->DisconnectController (HandleBuffer[Index], NULL, NULL);
 134     }
 135
 136     gBS->FreePool (HandleBuffer);
 137   }
 138
 139
 140   //
 141   // Discard ResetType, always return 0 as exit code
 142   //
 143   gUnix->Exit (0);
 144
 145   //
 146   // Should never go here
 147   //
 148   ASSERT (FALSE);
 149
 150   return;
 151 }