summaryrefslogtreecommitdiff
path: root/Vlv2TbltDevicePkg/Library/BiosIdLib/BiosIdLib.c
blob: 01897b347ce4670f4afc7205f0068a0539136b91 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
/*++

Copyright (c) 2011  - 2014, Intel Corporation. All rights reserved
                                                                                   

  This program and the accompanying materials are licensed and made available under

  the terms and conditions of the BSD License that accompanies this distribution.  

  The full text of the license may be found at                                     

  http://opensource.org/licenses/bsd-license.php.                                  

                                                                                   

  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,            

  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.    

                                                                                   


Module Name:

  BiosIdLib.c

Abstract:

  Boot service DXE BIOS ID library implementation.

  These functions in this file can be called during DXE and cannot be called during runtime
  or in SMM which should use a RT or SMM library.

--*/

#include <PiDxe.h>
#include <Library/BaseLib.h>
#include <Library/HobLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>

#include <Library/BiosIdLib.h>
#include <Guid/BiosId.h>
#include <Protocol/FirmwareVolume2.h>
#include <Protocol/LoadedImage.h>


EFI_STATUS
GetImageFromFv (
  IN  EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv,
  IN  EFI_GUID           *NameGuid,
  IN  EFI_SECTION_TYPE   SectionType,
  OUT VOID               **Buffer,
  OUT UINTN              *Size
  )
{
  EFI_STATUS                Status;
  EFI_FV_FILETYPE           FileType;
  EFI_FV_FILE_ATTRIBUTES    Attributes;
  UINT32                    AuthenticationStatus;

  //
  // Read desired section content in NameGuid file
  //
  *Buffer     = NULL;
  *Size       = 0;
  Status      = Fv->ReadSection (
                      Fv,
                      NameGuid,
                      SectionType,
                      0,
                      Buffer,
                      Size,
                      &AuthenticationStatus
                      );

  if (EFI_ERROR (Status) && (SectionType == EFI_SECTION_TE)) {
    //
    // Try reading PE32 section, since the TE section does not exist
    //
    *Buffer = NULL;
    *Size   = 0;
    Status  = Fv->ReadSection (
                    Fv,
                    NameGuid,
                    EFI_SECTION_PE32,
                    0,
                    Buffer,
                    Size,
                    &AuthenticationStatus
                    );
  }

  if (EFI_ERROR (Status) &&
      ((SectionType == EFI_SECTION_TE) || (SectionType == EFI_SECTION_PE32))) {
    //
    // Try reading raw file, since the desired section does not exist
    //
    *Buffer = NULL;
    *Size   = 0;
    Status  = Fv->ReadFile (
                    Fv,
                    NameGuid,
                    Buffer,
                    Size,
                    &FileType,
                    &Attributes,
                    &AuthenticationStatus
                    );
  }

  return Status;
}


EFI_STATUS
GetImageEx (
  IN  EFI_HANDLE         ImageHandle,
  IN  EFI_GUID           *NameGuid,
  IN  EFI_SECTION_TYPE   SectionType,
  OUT VOID               **Buffer,
  OUT UINTN              *Size,
  BOOLEAN                WithinImageFv
  )
{
  EFI_STATUS                    Status;
  EFI_HANDLE                    *HandleBuffer;
  UINTN                         HandleCount;
  UINTN                         Index;
  EFI_LOADED_IMAGE_PROTOCOL     *LoadedImage;

  EFI_FIRMWARE_VOLUME2_PROTOCOL *ImageFv;
  EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv;


  if (ImageHandle == NULL && WithinImageFv) {
    return EFI_INVALID_PARAMETER;
  }

  Status  = EFI_NOT_FOUND;
  ImageFv = NULL;
  if (ImageHandle != NULL) {
    Status = gBS->HandleProtocol (
                    ImageHandle,
                    &gEfiLoadedImageProtocolGuid,
                    (VOID **) &LoadedImage
                    );
    if (EFI_ERROR (Status)) {
      return Status;
    }
    Status = gBS->HandleProtocol (
                    LoadedImage->DeviceHandle,
                    &gEfiFirmwareVolume2ProtocolGuid,
                    (VOID **) &ImageFv
                    );
    if (!EFI_ERROR (Status)) {
      Status = GetImageFromFv (ImageFv, NameGuid, SectionType, Buffer, Size);
    }
  }

  if (Status == EFI_SUCCESS || WithinImageFv) {
    return Status;
  }

  Status = gBS->LocateHandleBuffer (
                  ByProtocol,
                  &gEfiFirmwareVolume2ProtocolGuid,
                  NULL,
                  &HandleCount,
                  &HandleBuffer
                  );
  if (EFI_ERROR (Status)) {
    return Status;
  }

  //
  // Find desired image in all Fvs
  //
  for (Index = 0; Index < HandleCount; ++Index) {
    Status = gBS->HandleProtocol (
                    HandleBuffer[Index],
                    &gEfiFirmwareVolume2ProtocolGuid,
                    (VOID**)&Fv
                    );

    if (EFI_ERROR (Status)) {
      gBS->FreePool(HandleBuffer);
      return Status;
    }

    if (ImageFv != NULL && Fv == ImageFv) {
      continue;
    }

    Status = GetImageFromFv (Fv, NameGuid, SectionType, Buffer, Size);

    if (!EFI_ERROR (Status)) {
      break;
    }
  }
  gBS->FreePool(HandleBuffer);

  //
  // Not found image
  //
  if (Index == HandleCount) {
    return EFI_NOT_FOUND;
  }

  return EFI_SUCCESS;
}

/**
  This function returns BIOS ID by searching HOB or FV.

  @param BiosIdImage             The BIOS ID got from HOB or FV.

  @retval EFI_SUCCESS            All parameters were valid and BIOS ID has been got.
  @retval EFI_NOT_FOUND          BiosId image is not found, and no parameter will be modified.
  @retval EFI_INVALID_PARAMETER  The parameter is NULL.

**/
EFI_STATUS
GetBiosId (
  OUT BIOS_ID_IMAGE     *BiosIdImage
  )

{
  EFI_STATUS    Status;
  VOID          *Address = NULL;
  UINTN         Size = 0;

    DEBUG ((EFI_D_INFO, "Get BIOS ID from FV\n"));

    Status = GetImageEx (
               NULL,
               &gEfiBiosIdGuid,
               EFI_SECTION_RAW,
               &Address,
               &Size,
               FALSE
               );

    if (Status == EFI_SUCCESS) {
      //
      // BiosId image is present in FV
      //
      if (Address != NULL) {
        Size = sizeof (BIOS_ID_IMAGE);
        gBS->CopyMem (
              (void *) BiosIdImage,
              Address,
              Size
              );
        //
        // GetImage () allocated buffer for Address, now clear it.
        //
        gBS->FreePool (Address);

        DEBUG ((EFI_D_INFO, "Get BIOS ID from FV successfully\n"));
        DEBUG ((EFI_D_INFO, "BIOS ID: %s\n", (CHAR16 *) (&(BiosIdImage->BiosIdString))));

        return EFI_SUCCESS;
      }
    }
  return EFI_NOT_FOUND;
}

/**
  This function returns the Version & Release Date and Time by getting and converting
  BIOS ID.

  @param BiosVersion  The Bios Version out of the conversion.
  @param BiosReleaseDate  The Bios Release Date out of the conversion.
  @param BiosReleaseTime - The Bios Release Time out of the conversion.

  @retval EFI_SUCCESS - BIOS Version & Release Date and Time have been got successfully.
  @retval EFI_NOT_FOUND - BiosId image is not found, and no parameter will be modified.
  @retval EFI_INVALID_PARAMETER - All the parameters are NULL.

**/
EFI_STATUS
GetBiosVersionDateTime (
  OUT CHAR16    *BiosVersion, OPTIONAL
  OUT CHAR16    *BiosReleaseDate, OPTIONAL
  OUT CHAR16    *BiosReleaseTime OPTIONAL
  )
{
  EFI_STATUS        Status;
  BIOS_ID_IMAGE     BiosIdImage;

  if ((BiosVersion == NULL) && (BiosReleaseDate == NULL) && (BiosReleaseTime == NULL)) {
    return EFI_INVALID_PARAMETER;
  }

  Status = GetBiosId (&BiosIdImage);
  if (EFI_ERROR (Status)) {
    return EFI_NOT_FOUND;
  }

  if (BiosVersion != NULL) {
    //
    // Fill the BiosVersion data from the BIOS ID.
    //
    StrCpy (BiosVersion, (CHAR16 *) (&(BiosIdImage.BiosIdString)));
  }

  if (BiosReleaseDate != NULL) {
    //
    // Fill the build timestamp date from the BIOS ID in the "MM/DD/YY" format.
    //
    BiosReleaseDate[0] = BiosIdImage.BiosIdString.TimeStamp[2];
    BiosReleaseDate[1] = BiosIdImage.BiosIdString.TimeStamp[3];
    BiosReleaseDate[2] = (CHAR16) ((UINT8) ('/'));

    BiosReleaseDate[3] = BiosIdImage.BiosIdString.TimeStamp[4];
    BiosReleaseDate[4] = BiosIdImage.BiosIdString.TimeStamp[5];
    BiosReleaseDate[5] = (CHAR16) ((UINT8) ('/'));

    //
    // Add 20 for SMBIOS table
    // Current Linux kernel will misjudge 09 as year 0, so using 2009 for SMBIOS table
    //
    BiosReleaseDate[6] = '2';
    BiosReleaseDate[7] = '0';
    BiosReleaseDate[8] = BiosIdImage.BiosIdString.TimeStamp[0];
    BiosReleaseDate[9] = BiosIdImage.BiosIdString.TimeStamp[1];

    BiosReleaseDate[10] = (CHAR16) ((UINT8) ('\0'));
  }

  if (BiosReleaseTime != NULL) {

    //
    // Fill the build timestamp time from the BIOS ID in the "HH:MM" format.
    //

    BiosReleaseTime[0] = BiosIdImage.BiosIdString.TimeStamp[6];
    BiosReleaseTime[1] = BiosIdImage.BiosIdString.TimeStamp[7];
    BiosReleaseTime[2] = (CHAR16) ((UINT8) (':'));

    BiosReleaseTime[3] = BiosIdImage.BiosIdString.TimeStamp[8];
    BiosReleaseTime[4] = BiosIdImage.BiosIdString.TimeStamp[9];

    BiosReleaseTime[5] = (CHAR16) ((UINT8) ('\0'));
  }

  return  EFI_SUCCESS;
}