IntelFrameworkModulePkg/Library/SmmRuntimeDxeReportStatusCodeLibFramework/SmmRuntimeDxeSupport.c

   1 /** @file
   2   Library constructor & destructor, event handlers, and other internal worker functions.
   3
   4   Copyright (c) 2006 - 2010, Intel Corporation<BR>
   5   All rights reserved. This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #include "ReportStatusCodeLibInternal.h"
  16
  17 EFI_EVENT                     mVirtualAddressChangeEvent;
  18 EFI_EVENT                     mExitBootServicesEvent;
  19 EFI_STATUS_CODE_DATA          *mStatusCodeData;
  20 BOOLEAN                       mInSmm;
  21 EFI_SMM_BASE_PROTOCOL         *mSmmBase;
  22 EFI_RUNTIME_SERVICES          *mInternalRT;
  23 BOOLEAN                       mHaveExitedBootServices = FALSE;
  24 EFI_REPORT_STATUS_CODE        mReportStatusCode = NULL;
  25 EFI_SMM_STATUS_CODE_PROTOCOL  *mSmmStatusCodeProtocol;
  26
  27 /**
  28   Locates and caches SMM Status Code Protocol.
  29
  30 **/
  31 VOID
  32 SmmStatusCodeInitialize (
  33   VOID
  34   )
  35 {
  36   EFI_STATUS Status;
  37
  38   Status = gBS->LocateProtocol (&gEfiSmmStatusCodeProtocolGuid, NULL, (VOID **) &mSmmStatusCodeProtocol);
  39   if (EFI_ERROR (Status)) {
  40     mSmmStatusCodeProtocol = NULL;
  41   }
  42 }
  43
  44 /**
  45   Report status code via SMM Status Code Protocol.
  46
  47   @param  Type          Indicates the type of status code being reported.
  48   @param  Value         Describes the current status of a hardware or software entity.
  49                         This included information about the class and subclass that is used to classify the entity
  50                         as well as an operation.  For progress codes, the operation is the current activity.
  51                         For error codes, it is the exception.  For debug codes, it is not defined at this time.
  52   @param  Instance      The enumeration of a hardware or software entity within the system.
  53                         A system may contain multiple entities that match a class/subclass pairing.
  54                         The instance differentiates between them.  An instance of 0 indicates that instance information is unavailable,
  55                         not meaningful, or not relevant.  Valid instance numbers start with 1.
  56   @param  CallerId      This optional parameter may be used to identify the caller.
  57                         This parameter allows the status code driver to apply different rules to different callers.
  58   @param  Data          This optional parameter may be used to pass additional data
  59
  60   @retval EFI_SUCCESS   Always return EFI_SUCCESS.
  61
  62 **/
  63 EFI_STATUS
  64 SmmStatusCodeReport (
  65   IN EFI_STATUS_CODE_TYPE     Type,
  66   IN EFI_STATUS_CODE_VALUE    Value,
  67   IN UINT32                   Instance,
  68   IN EFI_GUID                 *CallerId OPTIONAL,
  69   IN EFI_STATUS_CODE_DATA     *Data     OPTIONAL
  70   )
  71 {
  72   if (mSmmStatusCodeProtocol != NULL) {
  73     (mSmmStatusCodeProtocol->ReportStatusCode) (mSmmStatusCodeProtocol, Type, Value, Instance, CallerId, Data);
  74   }
  75   return EFI_SUCCESS;
  76 }
  77
  78 /**
  79   Locate the report status code service.
  80
  81   In SMM, it tries to retrieve SMM Status Code Protocol.
  82   Otherwise, it first tries to retrieve ReportStatusCode() in Runtime Services Table.
  83   If not found, it then tries to retrieve ReportStatusCode() API of Report Status Code Protocol.
  84
  85   @return   Function pointer to the report status code service.
  86             NULL is returned if no status code service is available.
  87
  88 **/
  89 EFI_REPORT_STATUS_CODE
  90 InternalGetReportStatusCode (
  91   VOID
  92   )
  93 {
  94   EFI_STATUS_CODE_PROTOCOL  *StatusCodeProtocol;
  95   EFI_STATUS                Status;
  96
  97   if (mInSmm) {
  98     return (EFI_REPORT_STATUS_CODE) SmmStatusCodeReport;
  99   } else if (mInternalRT != NULL && mInternalRT->Hdr.Revision < 0x20000) {
 100     return ((FRAMEWORK_EFI_RUNTIME_SERVICES*)mInternalRT)->ReportStatusCode;
 101   } else if (!mHaveExitedBootServices) {
 102         //
 103         // Check gBS just in case. ReportStatusCode is called before gBS is initialized.
 104         //
 105     if (gBS != NULL) {
 106       Status = gBS->LocateProtocol (&gEfiStatusCodeRuntimeProtocolGuid, NULL, (VOID**)&StatusCodeProtocol);
 107       if (!EFI_ERROR (Status) && StatusCodeProtocol != NULL) {
 108         return StatusCodeProtocol->ReportStatusCode;
 109       }
 110     }
 111   }
 112
 113   return NULL;
 114 }
 115
 116 /**
 117   Internal worker function that reports a status code through the status code service.
 118
 119   If status code service is not cached, then this function checks if status code service is
 120   available in system.  If status code service is not available, then EFI_UNSUPPORTED is
 121   returned.  If status code service is present, then it is cached in mReportStatusCode.
 122   Finally this function reports status code through the status code service.
 123
 124   @param  Type              Status code type.
 125   @param  Value             Status code value.
 126   @param  Instance          Status code instance number.
 127   @param  CallerId          Pointer to a GUID that identifies the caller of this
 128                             function.  This is an optional parameter that may be
 129                             NULL.
 130   @param  Data              Pointer to the extended data buffer.  This is an
 131                             optional parameter that may be NULL.
 132
 133   @retval EFI_SUCCESS       The status code was reported.
 134   @retval EFI_UNSUPPORTED   Status code service is not available.
 135   @retval EFI_UNSUPPORTED   Status code type is not supported.
 136
 137 **/
 138 EFI_STATUS
 139 InternalReportStatusCode (
 140   IN EFI_STATUS_CODE_TYPE     Type,
 141   IN EFI_STATUS_CODE_VALUE    Value,
 142   IN UINT32                   Instance,
 143   IN CONST EFI_GUID           *CallerId OPTIONAL,
 144   IN EFI_STATUS_CODE_DATA     *Data     OPTIONAL
 145   )
 146 {
 147   if ((ReportProgressCodeEnabled() && ((Type) & EFI_STATUS_CODE_TYPE_MASK) == EFI_PROGRESS_CODE) ||
 148       (ReportErrorCodeEnabled() && ((Type) & EFI_STATUS_CODE_TYPE_MASK) == EFI_ERROR_CODE) ||
 149       (ReportDebugCodeEnabled() && ((Type) & EFI_STATUS_CODE_TYPE_MASK) == EFI_DEBUG_CODE)) {
 150     //
 151     // If mReportStatusCode is NULL, then check if status code service is available in system.
 152     //
 153     if (mReportStatusCode == NULL) {
 154       mReportStatusCode = InternalGetReportStatusCode ();
 155       if (mReportStatusCode == NULL) {
 156         return EFI_UNSUPPORTED;
 157       }
 158     }
 159
 160     //
 161     // A status code service is present in system, so pass in all the parameters to the service.
 162     //
 163     return (*mReportStatusCode) (Type, Value, Instance, (EFI_GUID *)CallerId, Data);
 164   }
 165
 166   return EFI_UNSUPPORTED;
 167 }
 168
 169 /**
 170   Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.
 171
 172   @param  Event        Event whose notification function is being invoked.
 173   @param  Context      Pointer to the notification function's context
 174
 175 **/
 176 VOID
 177 EFIAPI
 178 ReportStatusCodeLibVirtualAddressChange (
 179   IN EFI_EVENT        Event,
 180   IN VOID             *Context
 181   )
 182 {
 183   if (mReportStatusCode != NULL) {
 184     mInternalRT->ConvertPointer (0, (VOID **) &mReportStatusCode);
 185   }
 186   mInternalRT->ConvertPointer (0, (VOID **) &mStatusCodeData);
 187   mInternalRT->ConvertPointer (0, (VOID **) &mInternalRT);
 188 }
 189
 190 /**
 191   Notification function of EVT_SIGNAL_EXIT_BOOT_SERVICES.
 192
 193   @param  Event        Event whose notification function is being invoked.
 194   @param  Context      Pointer to the notification function's context
 195
 196 **/
 197 VOID
 198 EFIAPI
 199 ReportStatusCodeLibExitBootServices (
 200   IN EFI_EVENT        Event,
 201   IN VOID             *Context
 202   )
 203 {
 204   mHaveExitedBootServices = TRUE;
 205 }
 206
 207 /**
 208   The constructor function of SMM Runtime DXE Report Status Code Lib.
 209
 210   This function allocates memory for extended status code data, caches
 211   the report status code service, and registers events.
 212
 213   @param  ImageHandle   The firmware allocated handle for the EFI image.
 214   @param  SystemTable   A pointer to the EFI System Table.
 215
 216   @retval EFI_SUCCESS   The constructor always returns EFI_SUCCESS.
 217
 218 **/
 219 EFI_STATUS
 220 EFIAPI
 221 ReportStatusCodeLibConstruct (
 222   IN EFI_HANDLE           ImageHandle,
 223   IN EFI_SYSTEM_TABLE     *SystemTable
 224   )
 225 {
 226   EFI_STATUS     Status;
 227
 228   //
 229   // If in SMM mode, then allocates memory from SMRAM for extended status code data.
 230   //
 231   Status = gBS->LocateProtocol (&gEfiSmmBaseProtocolGuid, NULL, (VOID **) &mSmmBase);
 232   if (!EFI_ERROR (Status)) {
 233     mSmmBase->InSmm (mSmmBase, &mInSmm);
 234     if (mInSmm) {
 235       Status = mSmmBase->SmmAllocatePool (
 236                            mSmmBase,
 237                            EfiRuntimeServicesData,
 238                            sizeof (EFI_STATUS_CODE_DATA) + EFI_STATUS_CODE_DATA_MAX_SIZE,
 239                            (VOID **) &mStatusCodeData
 240                            );
 241       ASSERT_EFI_ERROR (Status);
 242       SmmStatusCodeInitialize ();
 243       return EFI_SUCCESS;
 244     }
 245   }
 246
 247
 248   //
 249   // If not in SMM mode, then allocate runtime memory for extended status code data.
 250   //
 251   // Library should not use the gRT directly, for it may be converted by other library instance.
 252   //
 253   mInternalRT = gRT;
 254   mInSmm      = FALSE;
 255
 256   mStatusCodeData = AllocateRuntimePool (sizeof (EFI_STATUS_CODE_DATA) + EFI_STATUS_CODE_DATA_MAX_SIZE);
 257   ASSERT (mStatusCodeData != NULL);
 258   //
 259   // Cache the report status code service
 260   //
 261   mReportStatusCode = InternalGetReportStatusCode ();
 262
 263   //
 264   // Register notify function for EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE
 265   //
 266   Status = gBS->CreateEventEx (
 267                   EVT_NOTIFY_SIGNAL,
 268                   TPL_NOTIFY,
 269                   ReportStatusCodeLibVirtualAddressChange,
 270                   NULL,
 271                   &gEfiEventVirtualAddressChangeGuid,
 272                   &mVirtualAddressChangeEvent
 273                   );
 274   ASSERT_EFI_ERROR (Status);
 275
 276   //
 277   // Register notify function for EVT_SIGNAL_EXIT_BOOT_SERVICES
 278   //
 279   Status = gBS->CreateEventEx (
 280                   EVT_NOTIFY_SIGNAL,
 281                   TPL_NOTIFY,
 282                   ReportStatusCodeLibExitBootServices,
 283                   NULL,
 284                   &gEfiEventExitBootServicesGuid,
 285                   &mExitBootServicesEvent
 286                   );
 287   ASSERT_EFI_ERROR (Status);
 288
 289   return EFI_SUCCESS;
 290 }
 291
 292 /**
 293   The destructor function of SMM Runtime DXE Report Status Code Lib.
 294
 295   The destructor function frees memory allocated by constructor, and closes related events.
 296   It will ASSERT() if that related operation fails and it will always return EFI_SUCCESS.
 297
 298   @param  ImageHandle   The firmware allocated handle for the EFI image.
 299   @param  SystemTable   A pointer to the EFI System Table.
 300
 301   @retval EFI_SUCCESS   The constructor always returns EFI_SUCCESS.
 302
 303 **/
 304 EFI_STATUS
 305 EFIAPI
 306 ReportStatusCodeLibDestruct (
 307   IN EFI_HANDLE        ImageHandle,
 308   IN EFI_SYSTEM_TABLE  *SystemTable
 309   )
 310 {
 311   EFI_STATUS  Status;
 312
 313   if (!mInSmm) {
 314     ASSERT (gBS != NULL);
 315     Status = gBS->CloseEvent (mVirtualAddressChangeEvent);
 316     ASSERT_EFI_ERROR (Status);
 317     Status = gBS->CloseEvent (mExitBootServicesEvent);
 318     ASSERT_EFI_ERROR (Status);
 319
 320     FreePool (mStatusCodeData);
 321   } else {
 322     mSmmBase->SmmFreePool (mSmmBase, mStatusCodeData);
 323   }
 324
 325   return EFI_SUCCESS;
 326 }
 327