IntelFrameworkPkg/Include/Protocol/FirmwareVolume.h

   1 /** @file
   2   This file declares the Firmware Volume Protocol.
   3
   4   The Firmware Volume Protocol provides file-level access to the firmware volume.
   5   Each firmware volume driver must produce an instance of the Firmware Volume
   6   Protocol if the firmware volume is to be visible to the system. The Firmware
   7   Volume Protocol also provides mechanisms for determining and modifying some
   8   attributes of the firmware volume.
   9
  10   Copyright (c) 2007, Intel Corporation
  11   All rights reserved. This program and the accompanying materials
  12   are licensed and made available under the terms and conditions of the BSD License
  13   which accompanies this distribution.  The full text of the license may be found at
  14   http://opensource.org/licenses/bsd-license.php
  15
  16   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  17   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  18
  19   @par Revision Reference:
  20   This protocol is defined in Firmware Volume specification.
  21   Version 0.9
  22
  23 **/
  24
  25 #ifndef _FIRMWARE_VOLUME_H_
  26 #define _FIRMWARE_VOLUME_H_
  27
  28 #include <PiDxe.h>
  29
  30 //
  31 // Firmware Volume Protocol GUID definition
  32 //
  33 #define EFI_FIRMWARE_VOLUME_PROTOCOL_GUID \
  34   { \
  35     0x389F751F, 0x1838, 0x4388, {0x83, 0x90, 0xCD, 0x81, 0x54, 0xBD, 0x27, 0xF8 } \
  36   }
  37
  38 #define FV_DEVICE_SIGNATURE SIGNATURE_32 ('_', 'F', 'V', '_')
  39
  40 typedef struct _EFI_FIRMWARE_VOLUME_PROTOCOL  EFI_FIRMWARE_VOLUME_PROTOCOL;
  41
  42 //
  43 // FRAMEWORK_EFI_FV_ATTRIBUTES bit definitions
  44 //
  45 typedef UINT64  FRAMEWORK_EFI_FV_ATTRIBUTES;
  46
  47 //
  48 // ************************************************************
  49 // FRAMEWORK_EFI_FV_ATTRIBUTES bit definitions
  50 // ************************************************************
  51 //
  52 #define EFI_FV_READ_DISABLE_CAP       0x0000000000000001ULL
  53 #define EFI_FV_READ_ENABLE_CAP        0x0000000000000002ULL
  54 #define EFI_FV_READ_STATUS            0x0000000000000004ULL
  55
  56 #define EFI_FV_WRITE_DISABLE_CAP      0x0000000000000008ULL
  57 #define EFI_FV_WRITE_ENABLE_CAP       0x0000000000000010ULL
  58 #define EFI_FV_WRITE_STATUS           0x0000000000000020ULL
  59
  60 #define EFI_FV_LOCK_CAP               0x0000000000000040ULL
  61 #define EFI_FV_LOCK_STATUS            0x0000000000000080ULL
  62 #define EFI_FV_WRITE_POLICY_RELIABLE  0x0000000000000100ULL
  63
  64 #define EFI_FV_ALIGNMENT_CAP          0x0000000000008000ULL
  65 #define EFI_FV_ALIGNMENT_2            0x0000000000010000ULL
  66 #define EFI_FV_ALIGNMENT_4            0x0000000000020000ULL
  67 #define EFI_FV_ALIGNMENT_8            0x0000000000040000ULL
  68 #define EFI_FV_ALIGNMENT_16           0x0000000000080000ULL
  69 #define EFI_FV_ALIGNMENT_32           0x0000000000100000ULL
  70 #define EFI_FV_ALIGNMENT_64           0x0000000000200000ULL
  71 #define EFI_FV_ALIGNMENT_128          0x0000000000400000ULL
  72 #define EFI_FV_ALIGNMENT_256          0x0000000000800000ULL
  73 #define EFI_FV_ALIGNMENT_512          0x0000000001000000ULL
  74 #define EFI_FV_ALIGNMENT_1K           0x0000000002000000ULL
  75 #define EFI_FV_ALIGNMENT_2K           0x0000000004000000ULL
  76 #define EFI_FV_ALIGNMENT_4K           0x0000000008000000ULL
  77 #define EFI_FV_ALIGNMENT_8K           0x0000000010000000ULL
  78 #define EFI_FV_ALIGNMENT_16K          0x0000000020000000ULL
  79 #define EFI_FV_ALIGNMENT_32K          0x0000000040000000ULL
  80 #define EFI_FV_ALIGNMENT_64K          0x0000000080000000ULL
  81
  82 //
  83 // Protocol API definitions
  84 //
  85
  86 /**
  87   Retrieves attributes, insures positive polarity of attribute bits, returns
  88   resulting attributes in output parameter
  89
  90   @param  This                  Indicates the EFI_FIRMWARE_VOLUME_PROTOCOL instance.
  91   @param  Attributes            output buffer which contains attributes
  92
  93   @retval EFI_SUCCESS           The firmware volume attributes were returned.
  94 **/
  95 typedef
  96 EFI_STATUS
  97 (EFIAPI *FRAMEWORK_EFI_FV_GET_ATTRIBUTES)(
  98   IN  EFI_FIRMWARE_VOLUME_PROTOCOL            *This,
  99   OUT FRAMEWORK_EFI_FV_ATTRIBUTES             *Attributes
 100   );
 101
 102 /**
 103   Sets volume attributes
 104
 105   @param  This                  Indicates the EFI_FIRMWARE_VOLUME_PROTOCOL instance.
 106   @param  Attributes            On input, Attributes is a pointer to an
 107                                 EFI_FV_ATTRIBUTES containing the desired firmware
 108                                 volume settings.O n successful return, it contains
 109                                 the new settings of the firmware volume. On
 110                                 unsuccessful return, Attributes is not modified
 111                                 and the firmware volume settings are not changed.
 112
 113   @retval EFI_INVALID_PARAMETER A bit in Attributes was invalid
 114   @retval EFI_SUCCESS           The requested firmware volume attributes were set
 115                                 and the resulting EFI_FV_ATTRIBUTES is returned in
 116                                 Attributes.
 117   @retval EFI_ACCESS_DENIED     the Device is locked and does not permit modification.
 118
 119 **/
 120 typedef
 121 EFI_STATUS
 122 (EFIAPI *FRAMEWORK_EFI_FV_SET_ATTRIBUTES)(
 123   IN EFI_FIRMWARE_VOLUME_PROTOCOL       *This,
 124   IN OUT FRAMEWORK_EFI_FV_ATTRIBUTES    *Attributes
 125   );
 126
 127 /**
 128   Read the requested file (NameGuid) or file information from the firmware volume
 129   and returns data in Buffer.
 130
 131   @param  This                  Indicates the EFI_FIRMWARE_VOLUME_PROTOCOL instance.
 132   @param  NameGuid              pointer to EFI_GUID which is the filename identifying which file to read
 133   @param  Buffer                Pointer to pointer to buffer in which contents of file are returned.
 134                                 <br>
 135                                 If Buffer is NULL, only type, attributes, and size are returned as
 136                                 there is no output buffer.
 137                                 <br>
 138                                 If Buffer != NULL and *Buffer == NULL, the output buffer is allocated
 139                                 from BS pool by ReadFile
 140                                 <br>
 141                                 If Buffer != NULL and *Buffer != NULL, the output buffer has been
 142                                 allocated by the caller and is being passed in.
 143   @param  BufferSize            Indicates the buffer size passed in, and on output the size
 144                                 required to complete the read
 145   @param  FoundType             pointer to type of the file who's data is returned
 146   @param  FileAttributes        pointer to attributes of the file who's data is resturned
 147   @param  AuthenticationStatus  pointer to authentication status of the data
 148
 149   @retval EFI_SUCCESS               The call completed successfully
 150   @retval EFI_WARN_BUFFER_TOO_SMALL The buffer is too small to contain the requested output.
 151                                     The buffer is filled and the output is truncated.
 152   @retval EFI_NOT_FOUND             NameGuid was not found int he firmware volume.
 153   @retval EFI_DEVICE_ERROR          A hardware error occurred when attempting to access the firmware volume.
 154   @retval EFI_ACCESS_DENIED         The firmware volumen is configured to disallow reads.
 155   @retval EFI_OUT_OF_RESOURCES      An allocation failure occurred.
 156
 157 **/
 158 typedef
 159 EFI_STATUS
 160 (EFIAPI *FRAMEWORK_EFI_FV_READ_FILE)(
 161   IN EFI_FIRMWARE_VOLUME_PROTOCOL   *This,
 162   IN EFI_GUID                       *NameGuid,
 163   IN OUT VOID                       **Buffer,
 164   IN OUT UINTN                      *BufferSize,
 165   OUT EFI_FV_FILETYPE               *FoundType,
 166   OUT EFI_FV_FILE_ATTRIBUTES        *FileAttributes,
 167   OUT UINT32                        *AuthenticationStatus
 168   );
 169
 170 /**
 171   Read the requested section from the specified file and returns data in Buffer.
 172
 173   @param  This                  Indicates the EFI_FIRMWARE_VOLUME_PROTOCOL instance.
 174   @param  NameGuid              Filename identifying the file from which to read
 175   @param  SectionType           Indicates what section type to retrieve
 176   @param  SectionInstance       Indicates which instance of SectionType to retrieve
 177   @param  Buffer                Pointer to pointer to buffer in which contents of file are returned.
 178                                 <br>
 179                                 If Buffer is NULL, only type, attributes, and size are returned as
 180                                 there is no output buffer.
 181                                 <br>
 182                                 If Buffer != NULL and *Buffer == NULL, the output buffer is allocated
 183                                 from BS pool by ReadFile
 184                                 <br>
 185                                 If Buffer != NULL and *Buffer != NULL, the output buffer has been
 186                                 allocated by the caller and is being passed in.
 187   @param  BufferSize            pointer to the buffer size passed in, and on output the size
 188                                 required to complete the read
 189   @param  AuthenticationStatus  pointer to the authentication status of the data
 190
 191   @retval EFI_SUCCESS
 192   @retval EFI_WARN_BUFFER_TOO_SMALL
 193   @retval EFI_OUT_OF_RESOURCES
 194   @retval EFI_NOT_FOUND
 195   @retval EFI_DEVICE_ERROR
 196   @retval EFI_ACCESS_DENIED
 197
 198 **/
 199 typedef
 200 EFI_STATUS
 201 (EFIAPI *FRAMEWORK_EFI_FV_READ_SECTION)(
 202   IN EFI_FIRMWARE_VOLUME_PROTOCOL   *This,
 203   IN EFI_GUID                       *NameGuid,
 204   IN EFI_SECTION_TYPE               SectionType,
 205   IN UINTN                          SectionInstance,
 206   IN OUT VOID                       **Buffer,
 207   IN OUT UINTN                      *BufferSize,
 208   OUT UINT32                        *AuthenticationStatus
 209   );
 210
 211 typedef UINT32  FRAMEWORK_EFI_FV_WRITE_POLICY;
 212
 213 #define FRAMEWORK_EFI_FV_UNRELIABLE_WRITE 0x00000000
 214 #define FRAMEWORK_EFI_FV_RELIABLE_WRITE   0x00000001
 215
 216 typedef struct {
 217   EFI_GUID                *NameGuid;
 218   EFI_FV_FILETYPE         Type;
 219   EFI_FV_FILE_ATTRIBUTES  FileAttributes;
 220   VOID                    *Buffer;
 221   UINT32                  BufferSize;
 222 } FRAMEWORK_EFI_FV_WRITE_FILE_DATA;
 223
 224 /**
 225   Write the supplied file (NameGuid) to the FV.
 226
 227   @param  This                  Indicates the EFI_FIRMWARE_VOLUME_PROTOCOL instance.
 228   @param  NumberOfFiles         Indicates the number of file records pointed to by FileData
 229   @param  WritePolicy           Indicates the level of reliability of the write with respect to
 230                                 things like power failure events.
 231   @param  FileData              A pointer to an array of EFI_FV_WRITE_FILE_DATA structures. Each
 232                                 element in the array indicates a file to write, and there are
 233                                 NumberOfFiles elements in the input array.
 234
 235   @retval EFI_SUCCESS
 236   @retval EFI_OUT_OF_RESOURCES
 237   @retval EFI_DEVICE_ERROR
 238   @retval EFI_WRITE_PROTECTED
 239   @retval EFI_NOT_FOUND
 240   @retval EFI_INVALID_PARAMETER
 241
 242 **/
 243 typedef
 244 EFI_STATUS
 245 (EFIAPI *FRAMEWORK_EFI_FV_WRITE_FILE)(
 246   IN EFI_FIRMWARE_VOLUME_PROTOCOL             *This,
 247   IN UINT32                                   NumberOfFiles,
 248   IN FRAMEWORK_EFI_FV_WRITE_POLICY            WritePolicy,
 249   IN FRAMEWORK_EFI_FV_WRITE_FILE_DATA         *FileData
 250   );
 251
 252 /**
 253   Given the input key, search for the next matching file in the volume.
 254
 255   @param  This                  Indicates the EFI_FIRMWARE_VOLUME_PROTOCOL instance.
 256   @param  Key                   Pointer to a caller allocated buffer that contains an implementation
 257                                 specific key that is used to track where to begin searching on
 258                                 successive calls.
 259   @param  FileType              pointer to the file type to filter for
 260   @param  NameGuid              pointer to Guid filename of the file found
 261   @param  Attributes            pointer to Attributes of the file found
 262   @param  Size                  pointer to Size in bytes of the file found
 263
 264   @retval EFI_SUCCESS
 265   @retval EFI_NOT_FOUND
 266   @retval EFI_DEVICE_ERROR
 267   @retval EFI_ACCESS_DENIED
 268
 269 **/
 270 typedef
 271 EFI_STATUS
 272 (EFIAPI *FRAMEWORK_EFI_FV_GET_NEXT_FILE)(
 273   IN EFI_FIRMWARE_VOLUME_PROTOCOL   *This,
 274   IN OUT VOID                       *Key,
 275   IN OUT EFI_FV_FILETYPE            *FileType,
 276   OUT EFI_GUID                      *NameGuid,
 277   OUT EFI_FV_FILE_ATTRIBUTES        *Attributes,
 278   OUT UINTN                         *Size
 279   );
 280
 281 //
 282 // Protocol interface structure
 283 //
 284 struct _EFI_FIRMWARE_VOLUME_PROTOCOL {
 285 ///
 286 /// Retrieves volume capabilities and current settings.
 287 ///
 288   FRAMEWORK_EFI_FV_GET_ATTRIBUTES GetVolumeAttributes;
 289 ///
 290 /// Modifies the current settings of the firmware volume.
 291 ///
 292   FRAMEWORK_EFI_FV_SET_ATTRIBUTES SetVolumeAttributes;
 293 ///
 294 /// Reads an entire file from the firmware volume.
 295 ///
 296   FRAMEWORK_EFI_FV_READ_FILE      ReadFile;
 297 ///
 298 /// Reads a single section from a file into a buffer.
 299 ///
 300   FRAMEWORK_EFI_FV_READ_SECTION   ReadSection;
 301 ///
 302 /// Writes an entire file into the firmware volume.
 303 ///
 304   FRAMEWORK_EFI_FV_WRITE_FILE     WriteFile;
 305 ///
 306 /// Provides service to allow searching the firmware volume.
 307 ///
 308   FRAMEWORK_EFI_FV_GET_NEXT_FILE  GetNextFile;
 309 ///
 310 ///  Data field that indicates the size in bytes of the Key input buffer for
 311 ///  the GetNextFile() API.
 312 ///
 313 UINT32                KeySize;
 314 ///
 315 ///  Handle of the parent firmware volume.
 316 ///
 317   EFI_HANDLE            ParentHandle;
 318 };
 319
 320 extern EFI_GUID gEfiFirmwareVolumeProtocolGuid;
 321
 322 #endif