summaryrefslogtreecommitdiff
path: root/Vlv2TbltDevicePkg/Library/FlashDeviceLib/FlashDeviceLib.c
blob: 80520ef921e4329f07fa1a03b6aad7e97060af31 (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
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
/** @file

  Copyright (c) 2004  - 2014, Intel Corporation. All rights reserved.<BR>
                                                                                   

  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.    

                                                                                   



**/

#include <PiDxe.h>

#include <Library/FlashDeviceLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/UefiRuntimeLib.h>
#include <Protocol/SmmBase2.h>
#include <Guid/EventGroup.h>
#include "SpiChipDefinitions.h"

UINTN FlashDeviceBase = FLASH_DEVICE_BASE_ADDRESS;

EFI_SPI_PROTOCOL *mSpiProtocol = NULL;

EFI_STATUS
SpiFlashErase (
  UINT8 *BaseAddress,
  UINTN NumBytes
  )
{
  EFI_STATUS          Status = EFI_SUCCESS;
  UINT32              SectorSize;
  UINT32              SpiAddress;

  SpiAddress = (UINT32)(UINTN)(BaseAddress) - (UINT32)FlashDeviceBase;
  SectorSize = SECTOR_SIZE_4KB;
  while ( (NumBytes > 0) && (NumBytes <= MAX_FWH_SIZE) ) {
    Status = mSpiProtocol->Execute (
                             mSpiProtocol,
                             SPI_SERASE,
                             SPI_WREN,
                             FALSE,
                             TRUE,
                             FALSE,
                             (UINT32) SpiAddress,
                             0,
                             NULL,
                             EnumSpiRegionBios
                             );
    if (EFI_ERROR (Status)) {
      break;
    }
    SpiAddress += SectorSize;
    NumBytes   -= SectorSize;
  }

  return Status;
}


EFI_STATUS
SpiFlashBlockErase (
  UINT8 *BaseAddress,
  UINTN NumBytes
  )
{
  EFI_STATUS          Status = EFI_SUCCESS;
  UINT32              SectorSize;
  UINT32              SpiAddress;

  SpiAddress = (UINT32)(UINTN)(BaseAddress) - (UINT32)FlashDeviceBase;
  SectorSize = SECTOR_SIZE_4KB;
  while ( (NumBytes > 0) && (NumBytes <= MAX_FWH_SIZE) ) {
    Status = mSpiProtocol->Execute (
                             mSpiProtocol,
                             SPI_SERASE,
                             SPI_WREN,
                             FALSE,
                             TRUE,
                             FALSE,
                             (UINT32) SpiAddress,
                             0,
                             NULL,
                             EnumSpiRegionBios
                             );
    if (EFI_ERROR (Status)) {
      break;
    }
    SpiAddress += SectorSize;
    NumBytes   -= SectorSize;
  }

  return Status;
}


static
EFI_STATUS
SpiFlashWrite (
  UINT8 *DstBufferPtr,
  UINT8 *Byte,
  IN  UINTN Length
  )
{
  EFI_STATUS                Status;
  UINT32                    NumBytes = (UINT32)Length;
  UINT8*                    pBuf8 = Byte;
  UINT32                    SpiAddress;

  SpiAddress = (UINT32)(UINTN)(DstBufferPtr) - (UINT32)FlashDeviceBase;
  Status = mSpiProtocol->Execute (
                           mSpiProtocol,
                           SPI_PROG,
                           SPI_WREN,
                           TRUE,
                           TRUE,
                           TRUE,
                           (UINT32)SpiAddress,
                           NumBytes,
                           pBuf8,
                           EnumSpiRegionBios
                           );
  return Status;
}

/**
  Read the Serial Flash Status Registers.

  @param  SpiStatus         Pointer to a caller-allocated UINT8. On successful return, it contains the
                            status data read from the Serial Flash Status Register.


  @retval EFI_SUCCESS       Operation success, status is returned in SpiStatus.
  @retval EFI_DEVICE_ERROR  The block device is not functioning correctly and the operation failed.

**/
EFI_STATUS
ReadStatusRegister (
  UINT8   *SpiStatus
  )
{
  EFI_STATUS          Status;

  Status = mSpiProtocol->Execute (
             mSpiProtocol,
             SPI_RDSR,
             SPI_WREN,
             TRUE,
             FALSE,
             FALSE,
             0,
             1,
             SpiStatus,
             EnumSpiRegionBios
             );
  return Status;
}

EFI_STATUS
SpiFlashLock (
    IN  UINT8  *BaseAddress,
    IN  UINTN  NumBytes,
    IN  BOOLEAN  Lock
  )
{
  EFI_STATUS          Status;
  UINT8               SpiData;
  UINT8               SpiStatus;

  if (Lock) {
    SpiData = SF_SR_WPE;
  } else {
    SpiData = 0;
  }

  //
  // Always disable block protection to workaround tool issue.
  // Feature may be re-enabled in a future bios.
  //
  SpiData = 0;
  Status = mSpiProtocol->Execute (
                           mSpiProtocol,
                           SPI_WRSR,
                           SPI_EWSR,
                           TRUE,
                           TRUE,
                           TRUE,
                           0,
                           1,
                           &SpiData,
                           EnumSpiRegionBios
                           );
  if (EFI_ERROR (Status)) {
    return Status;
  }

  Status = ReadStatusRegister (&SpiStatus);
  if (EFI_ERROR (Status)) {
    return Status;
  }

  if ((SpiStatus & SpiData) != SpiData) {
    Status = EFI_DEVICE_ERROR;
  }

  return Status;
}


/**
  Read NumBytes bytes of data from the address specified by
  PAddress into Buffer.

  @param[in]      PAddress          The starting physical address of the read.
  @param[in,out]  NumBytes          On input, the number of bytes to read. On output, the number
                                    of bytes actually read.
  @param[out]     Buffer            The destination data buffer for the read.

  @retval         EFI_SUCCESS.      Opertion is successful.
  @retval         EFI_DEVICE_ERROR  If there is any device errors.

**/
EFI_STATUS
EFIAPI
LibFvbFlashDeviceRead (
  IN      UINTN                           PAddress,
  IN  OUT UINTN                           *NumBytes,
      OUT UINT8                           *Buffer
  )
{
  CopyMem(Buffer, (VOID*)PAddress, *NumBytes);
  return EFI_SUCCESS;
}


/**
  Write NumBytes bytes of data from Buffer to the address specified by
  PAddresss.

  @param[in]      PAddress          The starting physical address of the write.
  @param[in,out]  NumBytes          On input, the number of bytes to write. On output,
                                    the actual number of bytes written.
  @param[in]      Buffer            The source data buffer for the write.

  @retval         EFI_SUCCESS.      Opertion is successful.
  @retval         EFI_DEVICE_ERROR  If there is any device errors.

**/
EFI_STATUS
EFIAPI
LibFvbFlashDeviceWrite (
  IN        UINTN                           PAddress,
  IN OUT    UINTN                           *NumBytes,
  IN        UINT8                           *Buffer
  )
{
EFI_STATUS Status;
  Status =  SpiFlashWrite((UINT8 *)PAddress, Buffer, *NumBytes);
 return Status;
}


/**
  Erase the block staring at PAddress.

  @param[in]  PAddress          The starting physical address of the block to be erased.
                                This library assume that caller garantee that the PAddress
                                is at the starting address of this block.
  @param[in]  LbaLength         The length of the logical block to be erased.

  @retval     EFI_SUCCESS.      Opertion is successful.
  @retval     EFI_DEVICE_ERROR  If there is any device errors.

**/
EFI_STATUS
EFIAPI
LibFvbFlashDeviceBlockErase (
  IN    UINTN                     PAddress,
  IN    UINTN                     LbaLength
  )
{
  EFI_STATUS Status;
  Status = SpiFlashBlockErase((UINT8 *)PAddress, LbaLength);

  return Status;
}


/**
  Lock or unlock the block staring at PAddress.

  @param[in]  PAddress        The starting physical address of region to be (un)locked.
  @param[in]  LbaLength       The length of the logical block to be erased.
  @param[in]  Lock            TRUE to lock. FALSE to unlock.

  @retval     EFI_SUCCESS.      Opertion is successful.
  @retval     EFI_DEVICE_ERROR  If there is any device errors.

**/
EFI_STATUS
EFIAPI
LibFvbFlashDeviceBlockLock (
  IN    UINTN                          PAddress,
  IN    UINTN                          LbaLength,
  IN    BOOLEAN                        Lock
  )
{
  EFI_STATUS Status;

    Status = SpiFlashLock((UINT8*)PAddress, LbaLength, Lock);
  return Status;
}

VOID
EFIAPI
LibFvbFlashDeviceVirtualAddressChangeNotifyEvent (
  IN EFI_EVENT        Event,
  IN VOID             *Context
  )
{
  gRT->ConvertPointer (0, (VOID **) &mSpiProtocol);
  gRT->ConvertPointer (0, (VOID **) &FlashDeviceBase);
}


/**
  The library constructuor.

  The function does the necessary initialization work for this library
  instance. Please put all initialization works in it.

  @param[in]  ImageHandle       The firmware allocated handle for the UEFI image.
  @param[in]  SystemTable       A pointer to the EFI system table.

  @retval     EFI_SUCCESS       The function always return EFI_SUCCESS for now.
                                It will ASSERT on error for debug version.
  @retval     EFI_ERROR         Please reference LocateProtocol for error code details.

**/
EFI_STATUS
EFIAPI
LibFvbFlashDeviceSupportInit (
  IN EFI_HANDLE         ImageHandle,
  IN EFI_SYSTEM_TABLE   *SystemTable
  )
{
  EFI_STATUS Status;
  EFI_EVENT  Event;
  UINT8                         SfId[3];
  UINT8                         FlashIndex;
  UINT8                         SpiReadError;
  UINT8                         SpiNotMatchError;
  EFI_SMM_BASE2_PROTOCOL       *SmmBase;
  BOOLEAN                       InSmm;

  SpiReadError     = 0x00;
  SpiNotMatchError = 0x00;

  InSmm = FALSE;
  Status = gBS->LocateProtocol (
                  &gEfiSmmBase2ProtocolGuid,
                  NULL,
                  (void **)&SmmBase
                  );
  if (!EFI_ERROR(Status)) {
    Status = SmmBase->InSmm(SmmBase, &InSmm);
    if (EFI_ERROR(Status)) {
      InSmm = FALSE;
    }
  }

  if (!InSmm) {
    Status = gBS->LocateProtocol (
                  &gEfiSpiProtocolGuid,
                  NULL,
                  (VOID **)&mSpiProtocol
                  );
    ASSERT_EFI_ERROR (Status);

    Status = gBS->CreateEventEx (
                  EVT_NOTIFY_SIGNAL,
                  TPL_NOTIFY,
                  LibFvbFlashDeviceVirtualAddressChangeNotifyEvent,
                  NULL,
                  &gEfiEventVirtualAddressChangeGuid,
                  &Event
                  );
    ASSERT_EFI_ERROR (Status);
  } else {
    Status = gBS->LocateProtocol (
                    &gEfiSmmSpiProtocolGuid,
                    NULL,
                    (VOID **)&mSpiProtocol
                    );
    ASSERT_EFI_ERROR (Status);
  }


  for (FlashIndex = EnumSpiFlashW25Q64; FlashIndex < EnumSpiFlashMax; FlashIndex++) {
    Status = mSpiProtocol->Init (mSpiProtocol, &(mInitTable[FlashIndex]));
    if (!EFI_ERROR (Status)) {
      //
      // Read Vendor/Device IDs to check if the driver supports the Serial Flash device.
      //
      Status = mSpiProtocol->Execute (
                               mSpiProtocol,
                               SPI_READ_ID,
                               SPI_WREN,
                               TRUE,
                               FALSE,
                               FALSE,
                               0,
                               3,
                               SfId,
                               EnumSpiRegionAll
                               );
      if (!EFI_ERROR (Status)) {
        if ((SfId[0] == mInitTable[FlashIndex].VendorId)  &&
            (SfId[1] == mInitTable[FlashIndex].DeviceId0) &&
            (SfId[2] == mInitTable[FlashIndex].DeviceId1)) {
            //
            // Found a matching SPI device, FlashIndex now contains flash device.
            //
            DEBUG ((EFI_D_ERROR, "OK - Found SPI Flash Type in SPI Flash Driver, Device Type ID 0 = 0x%02x!\n", mInitTable[FlashIndex].DeviceId0));
            DEBUG ((EFI_D_ERROR, "Device Type ID 1 = 0x%02x!\n", mInitTable[FlashIndex].DeviceId1));

            if (mInitTable[FlashIndex].BiosStartOffset == (UINTN) (-1)) {
              DEBUG ((EFI_D_ERROR, "ERROR - The size of BIOS image is bigger than SPI Flash device!\n"));
              CpuDeadLoop ();
            }
            break;
        } else {
          SpiNotMatchError++;
        }
      } else {
        SpiReadError++;
      }
    }
  }

  DEBUG ((EFI_D_ERROR, "SPI flash chip VID = 0x%X, DID0 = 0x%X, DID1 = 0x%X\n", SfId[0], SfId[1], SfId[2]));

  if (FlashIndex < EnumSpiFlashMax)  {
    return EFI_SUCCESS;
  } else {
  if (SpiReadError != 0) {
      DEBUG ((EFI_D_ERROR, "ERROR - SPI Read ID execution failed! Error Count = %d\n", SpiReadError));
   }    
    else {
      if (SpiNotMatchError != 0) {
        DEBUG ((EFI_D_ERROR, "ERROR - No supported SPI flash chip found! Error Count = %d\n", SpiNotMatchError));
        DEBUG ((EFI_D_ERROR, "SPI flash chip VID = 0x%X, DID0 = 0x%X, DID1 = 0x%X\n", SfId[0], SfId[1], SfId[2]));
      }
    }
    return EFI_UNSUPPORTED;
  }
}