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1e57a462 | 1 | /** @file NorFlashDxe.c\r |
2 | \r | |
dd917bae | 3 | Copyright (c) 2011 - 2020, Arm Limited. All rights reserved.<BR>\r |
1e57a462 | 4 | \r |
f4dfad05 | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
1e57a462 | 6 | \r |
7 | **/\r | |
8 | \r | |
9 | #include <Library/UefiLib.h>\r | |
10 | #include <Library/BaseMemoryLib.h>\r | |
11 | #include <Library/MemoryAllocationLib.h>\r | |
12 | #include <Library/UefiBootServicesTableLib.h>\r | |
13 | #include <Library/PcdLib.h>\r | |
14 | \r | |
15 | #include "NorFlashDxe.h"\r | |
16 | \r | |
1dbbfc17 | 17 | STATIC EFI_EVENT mNorFlashVirtualAddrChangeEvent;\r |
1e57a462 | 18 | \r |
19 | //\r | |
20 | // Global variable declarations\r | |
21 | //\r | |
22 | NOR_FLASH_INSTANCE **mNorFlashInstances;\r | |
1dbbfc17 | 23 | UINT32 mNorFlashDeviceCount;\r |
1e57a462 | 24 | \r |
25 | NOR_FLASH_INSTANCE mNorFlashInstanceTemplate = {\r | |
26 | NOR_FLASH_SIGNATURE, // Signature\r | |
27 | NULL, // Handle ... NEED TO BE FILLED\r | |
28 | \r | |
1e57a462 | 29 | 0, // DeviceBaseAddress ... NEED TO BE FILLED\r |
30 | 0, // RegionBaseAddress ... NEED TO BE FILLED\r | |
31 | 0, // Size ... NEED TO BE FILLED\r | |
32 | 0, // StartLba\r | |
33 | \r | |
1d5d0ae9 | 34 | {\r |
35 | EFI_BLOCK_IO_PROTOCOL_REVISION2, // Revision\r | |
36 | NULL, // Media ... NEED TO BE FILLED\r | |
37 | NorFlashBlockIoReset, // Reset;\r | |
1e57a462 | 38 | NorFlashBlockIoReadBlocks, // ReadBlocks\r |
39 | NorFlashBlockIoWriteBlocks, // WriteBlocks\r | |
1d5d0ae9 | 40 | NorFlashBlockIoFlushBlocks // FlushBlocks\r |
1e57a462 | 41 | }, // BlockIoProtocol\r |
42 | \r | |
1d5d0ae9 | 43 | {\r |
44 | 0, // MediaId ... NEED TO BE FILLED\r | |
45 | FALSE, // RemovableMedia\r | |
46 | TRUE, // MediaPresent\r | |
47 | FALSE, // LogicalPartition\r | |
48 | FALSE, // ReadOnly\r | |
49 | FALSE, // WriteCaching;\r | |
50 | 0, // BlockSize ... NEED TO BE FILLED\r | |
51 | 4, // IoAlign\r | |
52 | 0, // LastBlock ... NEED TO BE FILLED\r | |
53 | 0, // LowestAlignedLba\r | |
54 | 1, // LogicalBlocksPerPhysicalBlock\r | |
1e57a462 | 55 | }, //Media;\r |
56 | \r | |
452a9ee1 BJ |
57 | {\r |
58 | EFI_DISK_IO_PROTOCOL_REVISION, // Revision\r | |
59 | NorFlashDiskIoReadDisk, // ReadDisk\r | |
60 | NorFlashDiskIoWriteDisk // WriteDisk\r | |
61 | },\r | |
62 | \r | |
1d5d0ae9 | 63 | {\r |
1e57a462 | 64 | FvbGetAttributes, // GetAttributes\r |
65 | FvbSetAttributes, // SetAttributes\r | |
66 | FvbGetPhysicalAddress, // GetPhysicalAddress\r | |
67 | FvbGetBlockSize, // GetBlockSize\r | |
68 | FvbRead, // Read\r | |
69 | FvbWrite, // Write\r | |
1d5d0ae9 | 70 | FvbEraseBlocks, // EraseBlocks\r |
71 | NULL, //ParentHandle\r | |
1e57a462 | 72 | }, // FvbProtoccol;\r |
452a9ee1 | 73 | NULL, // ShadowBuffer\r |
1e57a462 | 74 | {\r |
75 | {\r | |
76 | {\r | |
77 | HARDWARE_DEVICE_PATH,\r | |
78 | HW_VENDOR_DP,\r | |
4ef11358 AB |
79 | {\r |
80 | (UINT8)(OFFSET_OF (NOR_FLASH_DEVICE_PATH, End)),\r | |
81 | (UINT8)(OFFSET_OF (NOR_FLASH_DEVICE_PATH, End) >> 8)\r | |
82 | }\r | |
1e57a462 | 83 | },\r |
b0fdce95 | 84 | { 0x0, 0x0, 0x0, { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 } }, // GUID ... NEED TO BE FILLED\r |
1e57a462 | 85 | },\r |
8b902534 | 86 | 0, // Index\r |
1e57a462 | 87 | {\r |
88 | END_DEVICE_PATH_TYPE,\r | |
89 | END_ENTIRE_DEVICE_PATH_SUBTYPE,\r | |
b0fdce95 | 90 | { sizeof (EFI_DEVICE_PATH_PROTOCOL), 0 }\r |
1e57a462 | 91 | }\r |
92 | } // DevicePath\r | |
93 | };\r | |
94 | \r | |
95 | EFI_STATUS\r | |
96 | NorFlashCreateInstance (\r | |
97 | IN UINTN NorFlashDeviceBase,\r | |
98 | IN UINTN NorFlashRegionBase,\r | |
99 | IN UINTN NorFlashSize,\r | |
4ef11358 | 100 | IN UINT32 Index,\r |
1e57a462 | 101 | IN UINT32 BlockSize,\r |
102 | IN BOOLEAN SupportFvb,\r | |
1e57a462 | 103 | OUT NOR_FLASH_INSTANCE** NorFlashInstance\r |
104 | )\r | |
105 | {\r | |
106 | EFI_STATUS Status;\r | |
107 | NOR_FLASH_INSTANCE* Instance;\r | |
108 | \r | |
109 | ASSERT(NorFlashInstance != NULL);\r | |
110 | \r | |
2dff0c1a | 111 | Instance = AllocateRuntimeCopyPool (sizeof(NOR_FLASH_INSTANCE),&mNorFlashInstanceTemplate);\r |
1e57a462 | 112 | if (Instance == NULL) {\r |
113 | return EFI_OUT_OF_RESOURCES;\r | |
114 | }\r | |
115 | \r | |
116 | Instance->DeviceBaseAddress = NorFlashDeviceBase;\r | |
117 | Instance->RegionBaseAddress = NorFlashRegionBase;\r | |
118 | Instance->Size = NorFlashSize;\r | |
119 | \r | |
120 | Instance->BlockIoProtocol.Media = &Instance->Media;\r | |
4ef11358 | 121 | Instance->Media.MediaId = Index;\r |
1e57a462 | 122 | Instance->Media.BlockSize = BlockSize;\r |
123 | Instance->Media.LastBlock = (NorFlashSize / BlockSize)-1;\r | |
1d5d0ae9 | 124 | \r |
8b902534 AB |
125 | CopyGuid (&Instance->DevicePath.Vendor.Guid, &gEfiCallerIdGuid);\r |
126 | Instance->DevicePath.Index = (UINT8)Index;\r | |
1e57a462 | 127 | \r |
452a9ee1 BJ |
128 | Instance->ShadowBuffer = AllocateRuntimePool (BlockSize);;\r |
129 | if (Instance->ShadowBuffer == NULL) {\r | |
130 | return EFI_OUT_OF_RESOURCES;\r | |
131 | }\r | |
132 | \r | |
1e57a462 | 133 | if (SupportFvb) {\r |
0f87c53d | 134 | NorFlashFvbInitialize (Instance);\r |
1e57a462 | 135 | \r |
136 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
137 | &Instance->Handle,\r | |
138 | &gEfiDevicePathProtocolGuid, &Instance->DevicePath,\r | |
139 | &gEfiBlockIoProtocolGuid, &Instance->BlockIoProtocol,\r | |
140 | &gEfiFirmwareVolumeBlockProtocolGuid, &Instance->FvbProtocol,\r | |
141 | NULL\r | |
142 | );\r | |
143 | if (EFI_ERROR(Status)) {\r | |
2dff0c1a | 144 | FreePool (Instance);\r |
1e57a462 | 145 | return Status;\r |
146 | }\r | |
147 | } else {\r | |
1e57a462 | 148 | Status = gBS->InstallMultipleProtocolInterfaces (\r |
149 | &Instance->Handle,\r | |
150 | &gEfiDevicePathProtocolGuid, &Instance->DevicePath,\r | |
151 | &gEfiBlockIoProtocolGuid, &Instance->BlockIoProtocol,\r | |
452a9ee1 | 152 | &gEfiDiskIoProtocolGuid, &Instance->DiskIoProtocol,\r |
1e57a462 | 153 | NULL\r |
154 | );\r | |
155 | if (EFI_ERROR(Status)) {\r | |
2dff0c1a | 156 | FreePool (Instance);\r |
1e57a462 | 157 | return Status;\r |
158 | }\r | |
159 | }\r | |
1d5d0ae9 | 160 | \r |
161 | *NorFlashInstance = Instance;\r | |
1e57a462 | 162 | return Status;\r |
163 | }\r | |
164 | \r | |
165 | UINT32\r | |
166 | NorFlashReadStatusRegister (\r | |
167 | IN NOR_FLASH_INSTANCE *Instance,\r | |
168 | IN UINTN SR_Address\r | |
169 | )\r | |
170 | {\r | |
171 | // Prepare to read the status register\r | |
172 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_STATUS_REGISTER);\r | |
173 | return MmioRead32 (Instance->DeviceBaseAddress);\r | |
174 | }\r | |
175 | \r | |
22044caa | 176 | STATIC\r |
1e57a462 | 177 | BOOLEAN\r |
178 | NorFlashBlockIsLocked (\r | |
179 | IN NOR_FLASH_INSTANCE *Instance,\r | |
180 | IN UINTN BlockAddress\r | |
181 | )\r | |
182 | {\r | |
183 | UINT32 LockStatus;\r | |
1e57a462 | 184 | \r |
185 | // Send command for reading device id\r | |
186 | SEND_NOR_COMMAND (BlockAddress, 2, P30_CMD_READ_DEVICE_ID);\r | |
187 | \r | |
188 | // Read block lock status\r | |
189 | LockStatus = MmioRead32 (CREATE_NOR_ADDRESS(BlockAddress, 2));\r | |
190 | \r | |
191 | // Decode block lock status\r | |
192 | LockStatus = FOLD_32BIT_INTO_16BIT(LockStatus);\r | |
193 | \r | |
194 | if ((LockStatus & 0x2) != 0) {\r | |
195 | DEBUG((EFI_D_ERROR, "NorFlashBlockIsLocked: WARNING: Block LOCKED DOWN\n"));\r | |
196 | }\r | |
197 | \r | |
22044caa | 198 | return ((LockStatus & 0x1) != 0);\r |
1e57a462 | 199 | }\r |
200 | \r | |
22044caa | 201 | STATIC\r |
1e57a462 | 202 | EFI_STATUS\r |
203 | NorFlashUnlockSingleBlock (\r | |
204 | IN NOR_FLASH_INSTANCE *Instance,\r | |
205 | IN UINTN BlockAddress\r | |
206 | )\r | |
207 | {\r | |
1e57a462 | 208 | UINT32 LockStatus;\r |
209 | \r | |
210 | // Raise the Task Priority Level to TPL_NOTIFY to serialise all its operations\r | |
211 | // and to protect shared data structures.\r | |
212 | \r | |
213 | if (FeaturePcdGet (PcdNorFlashCheckBlockLocked) == TRUE) {\r | |
214 | do {\r | |
215 | // Request a lock setup\r | |
216 | SEND_NOR_COMMAND (BlockAddress, 0, P30_CMD_LOCK_BLOCK_SETUP);\r | |
217 | \r | |
218 | // Request an unlock\r | |
219 | SEND_NOR_COMMAND (BlockAddress, 0, P30_CMD_UNLOCK_BLOCK);\r | |
220 | \r | |
221 | // Send command for reading device id\r | |
222 | SEND_NOR_COMMAND (BlockAddress, 2, P30_CMD_READ_DEVICE_ID);\r | |
223 | \r | |
224 | // Read block lock status\r | |
225 | LockStatus = MmioRead32 (CREATE_NOR_ADDRESS(BlockAddress, 2));\r | |
226 | \r | |
227 | // Decode block lock status\r | |
228 | LockStatus = FOLD_32BIT_INTO_16BIT(LockStatus);\r | |
229 | } while ((LockStatus & 0x1) == 1);\r | |
230 | } else {\r | |
231 | // Request a lock setup\r | |
232 | SEND_NOR_COMMAND (BlockAddress, 0, P30_CMD_LOCK_BLOCK_SETUP);\r | |
233 | \r | |
234 | // Request an unlock\r | |
235 | SEND_NOR_COMMAND (BlockAddress, 0, P30_CMD_UNLOCK_BLOCK);\r | |
236 | \r | |
237 | // Wait until the status register gives us the all clear\r | |
238 | do {\r | |
239 | LockStatus = NorFlashReadStatusRegister (Instance, BlockAddress);\r | |
240 | } while ((LockStatus & P30_SR_BIT_WRITE) != P30_SR_BIT_WRITE);\r | |
241 | }\r | |
242 | \r | |
243 | // Put device back into Read Array mode\r | |
244 | SEND_NOR_COMMAND (BlockAddress, 0, P30_CMD_READ_ARRAY);\r | |
245 | \r | |
22044caa | 246 | DEBUG((DEBUG_BLKIO, "UnlockSingleBlock: BlockAddress=0x%08x\n", BlockAddress));\r |
1e57a462 | 247 | \r |
22044caa | 248 | return EFI_SUCCESS;\r |
1e57a462 | 249 | }\r |
250 | \r | |
22044caa | 251 | STATIC\r |
1e57a462 | 252 | EFI_STATUS\r |
253 | NorFlashUnlockSingleBlockIfNecessary (\r | |
254 | IN NOR_FLASH_INSTANCE *Instance,\r | |
255 | IN UINTN BlockAddress\r | |
256 | )\r | |
257 | {\r | |
22044caa OM |
258 | EFI_STATUS Status;\r |
259 | \r | |
260 | Status = EFI_SUCCESS;\r | |
1e57a462 | 261 | \r |
dd917bae | 262 | if (NorFlashBlockIsLocked (Instance, BlockAddress)) {\r |
1e57a462 | 263 | Status = NorFlashUnlockSingleBlock (Instance, BlockAddress);\r |
264 | }\r | |
265 | \r | |
266 | return Status;\r | |
267 | }\r | |
268 | \r | |
269 | \r | |
270 | /**\r | |
271 | * The following function presumes that the block has already been unlocked.\r | |
272 | **/\r | |
22044caa | 273 | STATIC\r |
1e57a462 | 274 | EFI_STATUS\r |
275 | NorFlashEraseSingleBlock (\r | |
276 | IN NOR_FLASH_INSTANCE *Instance,\r | |
277 | IN UINTN BlockAddress\r | |
278 | )\r | |
279 | {\r | |
280 | EFI_STATUS Status;\r | |
281 | UINT32 StatusRegister;\r | |
282 | \r | |
283 | Status = EFI_SUCCESS;\r | |
284 | \r | |
285 | // Request a block erase and then confirm it\r | |
286 | SEND_NOR_COMMAND(BlockAddress, 0, P30_CMD_BLOCK_ERASE_SETUP);\r | |
287 | SEND_NOR_COMMAND(BlockAddress, 0, P30_CMD_BLOCK_ERASE_CONFIRM);\r | |
288 | \r | |
289 | // Wait until the status register gives us the all clear\r | |
290 | do {\r | |
291 | StatusRegister = NorFlashReadStatusRegister (Instance, BlockAddress);\r | |
292 | } while ((StatusRegister & P30_SR_BIT_WRITE) != P30_SR_BIT_WRITE);\r | |
293 | \r | |
294 | if (StatusRegister & P30_SR_BIT_VPP) {\r | |
295 | DEBUG((EFI_D_ERROR,"EraseSingleBlock(BlockAddress=0x%08x: VPP Range Error\n", BlockAddress));\r | |
296 | Status = EFI_DEVICE_ERROR;\r | |
297 | }\r | |
298 | \r | |
299 | if ((StatusRegister & (P30_SR_BIT_ERASE | P30_SR_BIT_PROGRAM)) == (P30_SR_BIT_ERASE | P30_SR_BIT_PROGRAM)) {\r | |
300 | DEBUG((EFI_D_ERROR,"EraseSingleBlock(BlockAddress=0x%08x: Command Sequence Error\n", BlockAddress));\r | |
301 | Status = EFI_DEVICE_ERROR;\r | |
302 | }\r | |
303 | \r | |
304 | if (StatusRegister & P30_SR_BIT_ERASE) {\r | |
305 | DEBUG((EFI_D_ERROR,"EraseSingleBlock(BlockAddress=0x%08x: Block Erase Error StatusRegister:0x%X\n", BlockAddress, StatusRegister));\r | |
306 | Status = EFI_DEVICE_ERROR;\r | |
307 | }\r | |
308 | \r | |
309 | if (StatusRegister & P30_SR_BIT_BLOCK_LOCKED) {\r | |
310 | // The debug level message has been reduced because a device lock might happen. In this case we just retry it ...\r | |
311 | DEBUG((EFI_D_INFO,"EraseSingleBlock(BlockAddress=0x%08x: Block Locked Error\n", BlockAddress));\r | |
312 | Status = EFI_WRITE_PROTECTED;\r | |
313 | }\r | |
314 | \r | |
315 | if (EFI_ERROR(Status)) {\r | |
316 | // Clear the Status Register\r | |
317 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_CLEAR_STATUS_REGISTER);\r | |
318 | }\r | |
319 | \r | |
320 | // Put device back into Read Array mode\r | |
321 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);\r | |
322 | \r | |
323 | return Status;\r | |
324 | }\r | |
325 | \r | |
326 | /**\r | |
22044caa | 327 | * This function unlock and erase an entire NOR Flash block.\r |
1e57a462 | 328 | **/\r |
329 | EFI_STATUS\r | |
330 | NorFlashUnlockAndEraseSingleBlock (\r | |
331 | IN NOR_FLASH_INSTANCE *Instance,\r | |
332 | IN UINTN BlockAddress\r | |
333 | )\r | |
334 | {\r | |
335 | EFI_STATUS Status;\r | |
336 | UINTN Index;\r | |
337 | EFI_TPL OriginalTPL;\r | |
338 | \r | |
2dff0c1a OM |
339 | if (!EfiAtRuntime ()) {\r |
340 | // Raise TPL to TPL_HIGH to stop anyone from interrupting us.\r | |
341 | OriginalTPL = gBS->RaiseTPL (TPL_HIGH_LEVEL);\r | |
342 | } else {\r | |
343 | // This initialization is only to prevent the compiler to complain about the\r | |
344 | // use of uninitialized variables\r | |
345 | OriginalTPL = TPL_HIGH_LEVEL;\r | |
346 | }\r | |
1e57a462 | 347 | \r |
348 | Index = 0;\r | |
349 | // The block erase might fail a first time (SW bug ?). Retry it ...\r | |
350 | do {\r | |
351 | // Unlock the block if we have to\r | |
352 | Status = NorFlashUnlockSingleBlockIfNecessary (Instance, BlockAddress);\r | |
22044caa OM |
353 | if (EFI_ERROR (Status)) {\r |
354 | break;\r | |
1e57a462 | 355 | }\r |
22044caa | 356 | Status = NorFlashEraseSingleBlock (Instance, BlockAddress);\r |
1e57a462 | 357 | Index++;\r |
358 | } while ((Index < NOR_FLASH_ERASE_RETRY) && (Status == EFI_WRITE_PROTECTED));\r | |
359 | \r | |
360 | if (Index == NOR_FLASH_ERASE_RETRY) {\r | |
361 | DEBUG((EFI_D_ERROR,"EraseSingleBlock(BlockAddress=0x%08x: Block Locked Error (try to erase %d times)\n", BlockAddress,Index));\r | |
362 | }\r | |
363 | \r | |
2dff0c1a OM |
364 | if (!EfiAtRuntime ()) {\r |
365 | // Interruptions can resume.\r | |
366 | gBS->RestoreTPL (OriginalTPL);\r | |
367 | }\r | |
1e57a462 | 368 | \r |
369 | return Status;\r | |
370 | }\r | |
371 | \r | |
372 | \r | |
452a9ee1 | 373 | STATIC\r |
1e57a462 | 374 | EFI_STATUS\r |
375 | NorFlashWriteSingleWord (\r | |
376 | IN NOR_FLASH_INSTANCE *Instance,\r | |
377 | IN UINTN WordAddress,\r | |
378 | IN UINT32 WriteData\r | |
379 | )\r | |
380 | {\r | |
381 | EFI_STATUS Status;\r | |
382 | UINT32 StatusRegister;\r | |
383 | \r | |
384 | Status = EFI_SUCCESS;\r | |
385 | \r | |
386 | // Request a write single word command\r | |
387 | SEND_NOR_COMMAND(WordAddress, 0, P30_CMD_WORD_PROGRAM_SETUP);\r | |
388 | \r | |
389 | // Store the word into NOR Flash;\r | |
390 | MmioWrite32 (WordAddress, WriteData);\r | |
391 | \r | |
392 | // Wait for the write to complete and then check for any errors; i.e. check the Status Register\r | |
393 | do {\r | |
394 | // Prepare to read the status register\r | |
395 | StatusRegister = NorFlashReadStatusRegister (Instance, WordAddress);\r | |
396 | // The chip is busy while the WRITE bit is not asserted\r | |
397 | } while ((StatusRegister & P30_SR_BIT_WRITE) != P30_SR_BIT_WRITE);\r | |
398 | \r | |
399 | \r | |
400 | // Perform a full status check:\r | |
401 | // Mask the relevant bits of Status Register.\r | |
402 | // Everything should be zero, if not, we have a problem\r | |
403 | \r | |
404 | if (StatusRegister & P30_SR_BIT_VPP) {\r | |
405 | DEBUG((EFI_D_ERROR,"NorFlashWriteSingleWord(WordAddress:0x%X): VPP Range Error\n",WordAddress));\r | |
406 | Status = EFI_DEVICE_ERROR;\r | |
407 | }\r | |
408 | \r | |
409 | if (StatusRegister & P30_SR_BIT_PROGRAM) {\r | |
410 | DEBUG((EFI_D_ERROR,"NorFlashWriteSingleWord(WordAddress:0x%X): Program Error\n",WordAddress));\r | |
411 | Status = EFI_DEVICE_ERROR;\r | |
412 | }\r | |
413 | \r | |
414 | if (StatusRegister & P30_SR_BIT_BLOCK_LOCKED) {\r | |
415 | DEBUG((EFI_D_ERROR,"NorFlashWriteSingleWord(WordAddress:0x%X): Device Protect Error\n",WordAddress));\r | |
416 | Status = EFI_DEVICE_ERROR;\r | |
417 | }\r | |
418 | \r | |
419 | if (!EFI_ERROR(Status)) {\r | |
420 | // Clear the Status Register\r | |
421 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_CLEAR_STATUS_REGISTER);\r | |
422 | }\r | |
423 | \r | |
424 | // Put device back into Read Array mode\r | |
425 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);\r | |
426 | \r | |
427 | return Status;\r | |
428 | }\r | |
429 | \r | |
430 | /*\r | |
431 | * Writes data to the NOR Flash using the Buffered Programming method.\r | |
432 | *\r | |
433 | * The maximum size of the on-chip buffer is 32-words, because of hardware restrictions.\r | |
434 | * Therefore this function will only handle buffers up to 32 words or 128 bytes.\r | |
435 | * To deal with larger buffers, call this function again.\r | |
436 | *\r | |
437 | * This function presumes that both the TargetAddress and the TargetAddress+BufferSize\r | |
438 | * exist entirely within the NOR Flash. Therefore these conditions will not be checked here.\r | |
439 | *\r | |
440 | * In buffered programming, if the target address not at the beginning of a 32-bit word boundary,\r | |
441 | * then programming time is doubled and power consumption is increased.\r | |
442 | * Therefore, it is a requirement to align buffer writes to 32-bit word boundaries.\r | |
443 | * i.e. the last 4 bits of the target start address must be zero: 0x......00\r | |
444 | */\r | |
445 | EFI_STATUS\r | |
446 | NorFlashWriteBuffer (\r | |
447 | IN NOR_FLASH_INSTANCE *Instance,\r | |
448 | IN UINTN TargetAddress,\r | |
449 | IN UINTN BufferSizeInBytes,\r | |
450 | IN UINT32 *Buffer\r | |
451 | )\r | |
452 | {\r | |
453 | EFI_STATUS Status;\r | |
454 | UINTN BufferSizeInWords;\r | |
455 | UINTN Count;\r | |
456 | volatile UINT32 *Data;\r | |
457 | UINTN WaitForBuffer;\r | |
458 | BOOLEAN BufferAvailable;\r | |
459 | UINT32 StatusRegister;\r | |
460 | \r | |
461 | WaitForBuffer = MAX_BUFFERED_PROG_ITERATIONS;\r | |
462 | BufferAvailable = FALSE;\r | |
463 | \r | |
464 | // Check that the target address does not cross a 32-word boundary.\r | |
465 | if ((TargetAddress & BOUNDARY_OF_32_WORDS) != 0) {\r | |
466 | return EFI_INVALID_PARAMETER;\r | |
467 | }\r | |
468 | \r | |
469 | // Check there are some data to program\r | |
470 | if (BufferSizeInBytes == 0) {\r | |
471 | return EFI_BUFFER_TOO_SMALL;\r | |
472 | }\r | |
473 | \r | |
474 | // Check that the buffer size does not exceed the maximum hardware buffer size on chip.\r | |
475 | if (BufferSizeInBytes > P30_MAX_BUFFER_SIZE_IN_BYTES) {\r | |
476 | return EFI_BAD_BUFFER_SIZE;\r | |
477 | }\r | |
478 | \r | |
479 | // Check that the buffer size is a multiple of 32-bit words\r | |
480 | if ((BufferSizeInBytes % 4) != 0) {\r | |
481 | return EFI_BAD_BUFFER_SIZE;\r | |
482 | }\r | |
483 | \r | |
484 | // Pre-programming conditions checked, now start the algorithm.\r | |
485 | \r | |
486 | // Prepare the data destination address\r | |
487 | Data = (UINT32 *)TargetAddress;\r | |
488 | \r | |
489 | // Check the availability of the buffer\r | |
490 | do {\r | |
491 | // Issue the Buffered Program Setup command\r | |
492 | SEND_NOR_COMMAND(TargetAddress, 0, P30_CMD_BUFFERED_PROGRAM_SETUP);\r | |
493 | \r | |
494 | // Read back the status register bit#7 from the same address\r | |
495 | if (((*Data) & P30_SR_BIT_WRITE) == P30_SR_BIT_WRITE) {\r | |
496 | BufferAvailable = TRUE;\r | |
497 | }\r | |
498 | \r | |
499 | // Update the loop counter\r | |
500 | WaitForBuffer--;\r | |
501 | \r | |
502 | } while ((WaitForBuffer > 0) && (BufferAvailable == FALSE));\r | |
503 | \r | |
504 | // The buffer was not available for writing\r | |
505 | if (WaitForBuffer == 0) {\r | |
506 | Status = EFI_DEVICE_ERROR;\r | |
507 | goto EXIT;\r | |
508 | }\r | |
509 | \r | |
510 | // From now on we work in 32-bit words\r | |
511 | BufferSizeInWords = BufferSizeInBytes / (UINTN)4;\r | |
512 | \r | |
513 | // Write the word count, which is (buffer_size_in_words - 1),\r | |
514 | // because word count 0 means one word.\r | |
515 | SEND_NOR_COMMAND(TargetAddress, 0, (BufferSizeInWords - 1));\r | |
516 | \r | |
517 | // Write the data to the NOR Flash, advancing each address by 4 bytes\r | |
518 | for(Count=0; Count < BufferSizeInWords; Count++, Data++, Buffer++) {\r | |
2efbf710 | 519 | MmioWrite32 ((UINTN)Data, *Buffer);\r |
1e57a462 | 520 | }\r |
521 | \r | |
522 | // Issue the Buffered Program Confirm command, to start the programming operation\r | |
523 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_BUFFERED_PROGRAM_CONFIRM);\r | |
524 | \r | |
525 | // Wait for the write to complete and then check for any errors; i.e. check the Status Register\r | |
526 | do {\r | |
527 | StatusRegister = NorFlashReadStatusRegister (Instance, TargetAddress);\r | |
528 | // The chip is busy while the WRITE bit is not asserted\r | |
529 | } while ((StatusRegister & P30_SR_BIT_WRITE) != P30_SR_BIT_WRITE);\r | |
530 | \r | |
531 | \r | |
532 | // Perform a full status check:\r | |
533 | // Mask the relevant bits of Status Register.\r | |
534 | // Everything should be zero, if not, we have a problem\r | |
535 | \r | |
536 | Status = EFI_SUCCESS;\r | |
537 | \r | |
538 | if (StatusRegister & P30_SR_BIT_VPP) {\r | |
539 | DEBUG((EFI_D_ERROR,"NorFlashWriteBuffer(TargetAddress:0x%X): VPP Range Error\n", TargetAddress));\r | |
540 | Status = EFI_DEVICE_ERROR;\r | |
541 | }\r | |
542 | \r | |
543 | if (StatusRegister & P30_SR_BIT_PROGRAM) {\r | |
544 | DEBUG((EFI_D_ERROR,"NorFlashWriteBuffer(TargetAddress:0x%X): Program Error\n", TargetAddress));\r | |
545 | Status = EFI_DEVICE_ERROR;\r | |
546 | }\r | |
547 | \r | |
548 | if (StatusRegister & P30_SR_BIT_BLOCK_LOCKED) {\r | |
549 | DEBUG((EFI_D_ERROR,"NorFlashWriteBuffer(TargetAddress:0x%X): Device Protect Error\n",TargetAddress));\r | |
550 | Status = EFI_DEVICE_ERROR;\r | |
551 | }\r | |
552 | \r | |
553 | if (!EFI_ERROR(Status)) {\r | |
554 | // Clear the Status Register\r | |
555 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_CLEAR_STATUS_REGISTER);\r | |
556 | }\r | |
557 | \r | |
558 | EXIT:\r | |
559 | // Put device back into Read Array mode\r | |
560 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);\r | |
561 | \r | |
562 | return Status;\r | |
563 | }\r | |
564 | \r | |
452a9ee1 | 565 | STATIC\r |
1e57a462 | 566 | EFI_STATUS\r |
452a9ee1 | 567 | NorFlashWriteFullBlock (\r |
1e57a462 | 568 | IN NOR_FLASH_INSTANCE *Instance,\r |
569 | IN EFI_LBA Lba,\r | |
570 | IN UINT32 *DataBuffer,\r | |
571 | IN UINT32 BlockSizeInWords\r | |
572 | )\r | |
573 | {\r | |
574 | EFI_STATUS Status;\r | |
575 | UINTN WordAddress;\r | |
576 | UINT32 WordIndex;\r | |
577 | UINTN BufferIndex;\r | |
578 | UINTN BlockAddress;\r | |
579 | UINTN BuffersInBlock;\r | |
580 | UINTN RemainingWords;\r | |
581 | EFI_TPL OriginalTPL;\r | |
518c243d | 582 | UINTN Cnt;\r |
1e57a462 | 583 | \r |
584 | Status = EFI_SUCCESS;\r | |
585 | \r | |
586 | // Get the physical address of the block\r | |
587 | BlockAddress = GET_NOR_BLOCK_ADDRESS (Instance->RegionBaseAddress, Lba, BlockSizeInWords * 4);\r | |
588 | \r | |
589 | // Start writing from the first address at the start of the block\r | |
590 | WordAddress = BlockAddress;\r | |
591 | \r | |
2dff0c1a OM |
592 | if (!EfiAtRuntime ()) {\r |
593 | // Raise TPL to TPL_HIGH to stop anyone from interrupting us.\r | |
594 | OriginalTPL = gBS->RaiseTPL (TPL_HIGH_LEVEL);\r | |
595 | } else {\r | |
596 | // This initialization is only to prevent the compiler to complain about the\r | |
597 | // use of uninitialized variables\r | |
598 | OriginalTPL = TPL_HIGH_LEVEL;\r | |
599 | }\r | |
1e57a462 | 600 | \r |
601 | Status = NorFlashUnlockAndEraseSingleBlock (Instance, BlockAddress);\r | |
602 | if (EFI_ERROR(Status)) {\r | |
603 | DEBUG((EFI_D_ERROR, "WriteSingleBlock: ERROR - Failed to Unlock and Erase the single block at 0x%X\n", BlockAddress));\r | |
604 | goto EXIT;\r | |
605 | }\r | |
606 | \r | |
607 | // To speed up the programming operation, NOR Flash is programmed using the Buffered Programming method.\r | |
608 | \r | |
609 | // Check that the address starts at a 32-word boundary, i.e. last 7 bits must be zero\r | |
610 | if ((WordAddress & BOUNDARY_OF_32_WORDS) == 0x00) {\r | |
611 | \r | |
612 | // First, break the entire block into buffer-sized chunks.\r | |
82745213 | 613 | BuffersInBlock = (UINTN)(BlockSizeInWords * 4) / P30_MAX_BUFFER_SIZE_IN_BYTES;\r |
1e57a462 | 614 | \r |
615 | // Then feed each buffer chunk to the NOR Flash\r | |
518c243d | 616 | // If a buffer does not contain any data, don't write it.\r |
1e57a462 | 617 | for(BufferIndex=0;\r |
618 | BufferIndex < BuffersInBlock;\r | |
619 | BufferIndex++, WordAddress += P30_MAX_BUFFER_SIZE_IN_BYTES, DataBuffer += P30_MAX_BUFFER_SIZE_IN_WORDS\r | |
620 | ) {\r | |
518c243d HL |
621 | // Check the buffer to see if it contains any data (not set all 1s).\r |
622 | for (Cnt = 0; Cnt < P30_MAX_BUFFER_SIZE_IN_WORDS; Cnt++) {\r | |
623 | if (~DataBuffer[Cnt] != 0 ) {\r | |
624 | // Some data found, write the buffer.\r | |
625 | Status = NorFlashWriteBuffer (Instance, WordAddress, P30_MAX_BUFFER_SIZE_IN_BYTES,\r | |
626 | DataBuffer);\r | |
627 | if (EFI_ERROR(Status)) {\r | |
628 | goto EXIT;\r | |
629 | }\r | |
630 | break;\r | |
631 | }\r | |
1e57a462 | 632 | }\r |
633 | }\r | |
634 | \r | |
635 | // Finally, finish off any remaining words that are less than the maximum size of the buffer\r | |
636 | RemainingWords = BlockSizeInWords % P30_MAX_BUFFER_SIZE_IN_WORDS;\r | |
637 | \r | |
638 | if(RemainingWords != 0) {\r | |
639 | Status = NorFlashWriteBuffer (Instance, WordAddress, (RemainingWords * 4), DataBuffer);\r | |
640 | if (EFI_ERROR(Status)) {\r | |
641 | goto EXIT;\r | |
642 | }\r | |
643 | }\r | |
644 | \r | |
645 | } else {\r | |
646 | // For now, use the single word programming algorithm\r | |
647 | // It is unlikely that the NOR Flash will exist in an address which falls within a 32 word boundary range,\r | |
648 | // i.e. which ends in the range 0x......01 - 0x......7F.\r | |
649 | for(WordIndex=0; WordIndex<BlockSizeInWords; WordIndex++, DataBuffer++, WordAddress = WordAddress + 4) {\r | |
650 | Status = NorFlashWriteSingleWord (Instance, WordAddress, *DataBuffer);\r | |
651 | if (EFI_ERROR(Status)) {\r | |
652 | goto EXIT;\r | |
653 | }\r | |
654 | }\r | |
655 | }\r | |
656 | \r | |
657 | EXIT:\r | |
2dff0c1a OM |
658 | if (!EfiAtRuntime ()) {\r |
659 | // Interruptions can resume.\r | |
660 | gBS->RestoreTPL (OriginalTPL);\r | |
661 | }\r | |
1e57a462 | 662 | \r |
663 | if (EFI_ERROR(Status)) {\r | |
664 | DEBUG((EFI_D_ERROR, "NOR FLASH Programming [WriteSingleBlock] failed at address 0x%08x. Exit Status = \"%r\".\n", WordAddress, Status));\r | |
665 | }\r | |
666 | return Status;\r | |
667 | }\r | |
668 | \r | |
669 | \r | |
670 | EFI_STATUS\r | |
671 | NorFlashWriteBlocks (\r | |
672 | IN NOR_FLASH_INSTANCE *Instance,\r | |
673 | IN EFI_LBA Lba,\r | |
674 | IN UINTN BufferSizeInBytes,\r | |
675 | IN VOID *Buffer\r | |
676 | )\r | |
677 | {\r | |
678 | UINT32 *pWriteBuffer;\r | |
679 | EFI_STATUS Status = EFI_SUCCESS;\r | |
680 | EFI_LBA CurrentBlock;\r | |
681 | UINT32 BlockSizeInWords;\r | |
682 | UINT32 NumBlocks;\r | |
683 | UINT32 BlockCount;\r | |
684 | \r | |
685 | // The buffer must be valid\r | |
686 | if (Buffer == NULL) {\r | |
687 | return EFI_INVALID_PARAMETER;\r | |
688 | }\r | |
689 | \r | |
690 | if(Instance->Media.ReadOnly == TRUE) {\r | |
691 | return EFI_WRITE_PROTECTED;\r | |
692 | }\r | |
693 | \r | |
694 | // We must have some bytes to read\r | |
695 | DEBUG((DEBUG_BLKIO, "NorFlashWriteBlocks: BufferSizeInBytes=0x%x\n", BufferSizeInBytes));\r | |
696 | if(BufferSizeInBytes == 0) {\r | |
697 | return EFI_BAD_BUFFER_SIZE;\r | |
698 | }\r | |
699 | \r | |
700 | // The size of the buffer must be a multiple of the block size\r | |
701 | DEBUG((DEBUG_BLKIO, "NorFlashWriteBlocks: BlockSize in bytes =0x%x\n", Instance->Media.BlockSize));\r | |
702 | if ((BufferSizeInBytes % Instance->Media.BlockSize) != 0) {\r | |
703 | return EFI_BAD_BUFFER_SIZE;\r | |
704 | }\r | |
705 | \r | |
706 | // All blocks must be within the device\r | |
707 | NumBlocks = ((UINT32)BufferSizeInBytes) / Instance->Media.BlockSize ;\r | |
708 | \r | |
709 | DEBUG((DEBUG_BLKIO, "NorFlashWriteBlocks: NumBlocks=%d, LastBlock=%ld, Lba=%ld.\n", NumBlocks, Instance->Media.LastBlock, Lba));\r | |
710 | \r | |
711 | if ((Lba + NumBlocks) > (Instance->Media.LastBlock + 1)) {\r | |
712 | DEBUG((EFI_D_ERROR, "NorFlashWriteBlocks: ERROR - Write will exceed last block.\n"));\r | |
713 | return EFI_INVALID_PARAMETER;\r | |
714 | }\r | |
715 | \r | |
716 | BlockSizeInWords = Instance->Media.BlockSize / 4;\r | |
717 | \r | |
718 | // Because the target *Buffer is a pointer to VOID, we must put all the data into a pointer\r | |
719 | // to a proper data type, so use *ReadBuffer\r | |
720 | pWriteBuffer = (UINT32 *)Buffer;\r | |
721 | \r | |
722 | CurrentBlock = Lba;\r | |
723 | for (BlockCount=0; BlockCount < NumBlocks; BlockCount++, CurrentBlock++, pWriteBuffer = pWriteBuffer + BlockSizeInWords) {\r | |
724 | \r | |
725 | DEBUG((DEBUG_BLKIO, "NorFlashWriteBlocks: Writing block #%d\n", (UINTN)CurrentBlock));\r | |
726 | \r | |
452a9ee1 | 727 | Status = NorFlashWriteFullBlock (Instance, CurrentBlock, pWriteBuffer, BlockSizeInWords);\r |
1e57a462 | 728 | \r |
729 | if (EFI_ERROR(Status)) {\r | |
730 | break;\r | |
731 | }\r | |
732 | }\r | |
733 | \r | |
734 | DEBUG((DEBUG_BLKIO, "NorFlashWriteBlocks: Exit Status = \"%r\".\n", Status));\r | |
735 | return Status;\r | |
736 | }\r | |
737 | \r | |
bdb10148 AB |
738 | #define BOTH_ALIGNED(a, b, align) ((((UINTN)(a) | (UINTN)(b)) & ((align) - 1)) == 0)\r |
739 | \r | |
740 | /**\r | |
741 | Copy Length bytes from Source to Destination, using aligned accesses only.\r | |
742 | Note that this implementation uses memcpy() semantics rather then memmove()\r | |
743 | semantics, i.e., SourceBuffer and DestinationBuffer should not overlap.\r | |
744 | \r | |
745 | @param DestinationBuffer The target of the copy request.\r | |
746 | @param SourceBuffer The place to copy from.\r | |
747 | @param Length The number of bytes to copy.\r | |
748 | \r | |
749 | @return Destination\r | |
750 | \r | |
751 | **/\r | |
752 | STATIC\r | |
753 | VOID *\r | |
754 | AlignedCopyMem (\r | |
755 | OUT VOID *DestinationBuffer,\r | |
756 | IN CONST VOID *SourceBuffer,\r | |
757 | IN UINTN Length\r | |
758 | )\r | |
759 | {\r | |
760 | UINT8 *Destination8;\r | |
761 | CONST UINT8 *Source8;\r | |
762 | UINT32 *Destination32;\r | |
763 | CONST UINT32 *Source32;\r | |
764 | UINT64 *Destination64;\r | |
765 | CONST UINT64 *Source64;\r | |
766 | \r | |
767 | if (BOTH_ALIGNED(DestinationBuffer, SourceBuffer, 8) && Length >= 8) {\r | |
768 | Destination64 = DestinationBuffer;\r | |
769 | Source64 = SourceBuffer;\r | |
770 | while (Length >= 8) {\r | |
771 | *Destination64++ = *Source64++;\r | |
772 | Length -= 8;\r | |
773 | }\r | |
774 | \r | |
775 | Destination8 = (UINT8 *)Destination64;\r | |
776 | Source8 = (CONST UINT8 *)Source64;\r | |
777 | } else if (BOTH_ALIGNED(DestinationBuffer, SourceBuffer, 4) && Length >= 4) {\r | |
778 | Destination32 = DestinationBuffer;\r | |
779 | Source32 = SourceBuffer;\r | |
780 | while (Length >= 4) {\r | |
781 | *Destination32++ = *Source32++;\r | |
782 | Length -= 4;\r | |
783 | }\r | |
784 | \r | |
785 | Destination8 = (UINT8 *)Destination32;\r | |
786 | Source8 = (CONST UINT8 *)Source32;\r | |
787 | } else {\r | |
788 | Destination8 = DestinationBuffer;\r | |
789 | Source8 = SourceBuffer;\r | |
790 | }\r | |
791 | while (Length-- != 0) {\r | |
792 | *Destination8++ = *Source8++;\r | |
793 | }\r | |
794 | return DestinationBuffer;\r | |
795 | }\r | |
796 | \r | |
1e57a462 | 797 | EFI_STATUS\r |
798 | NorFlashReadBlocks (\r | |
799 | IN NOR_FLASH_INSTANCE *Instance,\r | |
800 | IN EFI_LBA Lba,\r | |
801 | IN UINTN BufferSizeInBytes,\r | |
802 | OUT VOID *Buffer\r | |
803 | )\r | |
804 | {\r | |
805 | UINT32 NumBlocks;\r | |
806 | UINTN StartAddress;\r | |
807 | \r | |
3d783074 | 808 | DEBUG((DEBUG_BLKIO, "NorFlashReadBlocks: BufferSize=0x%xB BlockSize=0x%xB LastBlock=%ld, Lba=%ld.\n",\r |
809 | BufferSizeInBytes, Instance->Media.BlockSize, Instance->Media.LastBlock, Lba));\r | |
810 | \r | |
1e57a462 | 811 | // The buffer must be valid\r |
812 | if (Buffer == NULL) {\r | |
813 | return EFI_INVALID_PARAMETER;\r | |
814 | }\r | |
815 | \r | |
452a9ee1 | 816 | // Return if we have not any byte to read\r |
3d783074 | 817 | if (BufferSizeInBytes == 0) {\r |
818 | return EFI_SUCCESS;\r | |
1e57a462 | 819 | }\r |
820 | \r | |
821 | // The size of the buffer must be a multiple of the block size\r | |
1e57a462 | 822 | if ((BufferSizeInBytes % Instance->Media.BlockSize) != 0) {\r |
823 | return EFI_BAD_BUFFER_SIZE;\r | |
824 | }\r | |
825 | \r | |
826 | // All blocks must be within the device\r | |
827 | NumBlocks = ((UINT32)BufferSizeInBytes) / Instance->Media.BlockSize ;\r | |
828 | \r | |
1e57a462 | 829 | if ((Lba + NumBlocks) > (Instance->Media.LastBlock + 1)) {\r |
830 | DEBUG((EFI_D_ERROR, "NorFlashReadBlocks: ERROR - Read will exceed last block\n"));\r | |
831 | return EFI_INVALID_PARAMETER;\r | |
832 | }\r | |
833 | \r | |
834 | // Get the address to start reading from\r | |
835 | StartAddress = GET_NOR_BLOCK_ADDRESS (Instance->RegionBaseAddress,\r | |
836 | Lba,\r | |
837 | Instance->Media.BlockSize\r | |
838 | );\r | |
839 | \r | |
840 | // Put the device into Read Array mode\r | |
841 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);\r | |
842 | \r | |
843 | // Readout the data\r | |
bdb10148 | 844 | AlignedCopyMem (Buffer, (VOID *)StartAddress, BufferSizeInBytes);\r |
1e57a462 | 845 | \r |
846 | return EFI_SUCCESS;\r | |
847 | }\r | |
848 | \r | |
518c243d HL |
849 | EFI_STATUS\r |
850 | NorFlashRead (\r | |
851 | IN NOR_FLASH_INSTANCE *Instance,\r | |
852 | IN EFI_LBA Lba,\r | |
853 | IN UINTN Offset,\r | |
854 | IN UINTN BufferSizeInBytes,\r | |
855 | OUT VOID *Buffer\r | |
856 | )\r | |
857 | {\r | |
ac83357a | 858 | UINTN StartAddress;\r |
518c243d HL |
859 | \r |
860 | // The buffer must be valid\r | |
861 | if (Buffer == NULL) {\r | |
862 | return EFI_INVALID_PARAMETER;\r | |
863 | }\r | |
864 | \r | |
865 | // Return if we have not any byte to read\r | |
866 | if (BufferSizeInBytes == 0) {\r | |
867 | return EFI_SUCCESS;\r | |
868 | }\r | |
869 | \r | |
ac83357a | 870 | if (((Lba * Instance->Media.BlockSize) + Offset + BufferSizeInBytes) > Instance->Size) {\r |
518c243d HL |
871 | DEBUG ((EFI_D_ERROR, "NorFlashRead: ERROR - Read will exceed device size.\n"));\r |
872 | return EFI_INVALID_PARAMETER;\r | |
873 | }\r | |
874 | \r | |
875 | // Get the address to start reading from\r | |
876 | StartAddress = GET_NOR_BLOCK_ADDRESS (Instance->RegionBaseAddress,\r | |
877 | Lba,\r | |
878 | Instance->Media.BlockSize\r | |
879 | );\r | |
880 | \r | |
881 | // Put the device into Read Array mode\r | |
882 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);\r | |
883 | \r | |
884 | // Readout the data\r | |
60d9f5f4 | 885 | AlignedCopyMem (Buffer, (VOID *)(StartAddress + Offset), BufferSizeInBytes);\r |
518c243d HL |
886 | \r |
887 | return EFI_SUCCESS;\r | |
888 | }\r | |
889 | \r | |
452a9ee1 BJ |
890 | /*\r |
891 | Write a full or portion of a block. It must not span block boundaries; that is,\r | |
892 | Offset + *NumBytes <= Instance->Media.BlockSize.\r | |
893 | */\r | |
894 | EFI_STATUS\r | |
895 | NorFlashWriteSingleBlock (\r | |
896 | IN NOR_FLASH_INSTANCE *Instance,\r | |
897 | IN EFI_LBA Lba,\r | |
898 | IN UINTN Offset,\r | |
899 | IN OUT UINTN *NumBytes,\r | |
900 | IN UINT8 *Buffer\r | |
901 | )\r | |
902 | {\r | |
903 | EFI_STATUS TempStatus;\r | |
904 | UINT32 Tmp;\r | |
905 | UINT32 TmpBuf;\r | |
906 | UINT32 WordToWrite;\r | |
907 | UINT32 Mask;\r | |
908 | BOOLEAN DoErase;\r | |
909 | UINTN BytesToWrite;\r | |
910 | UINTN CurOffset;\r | |
911 | UINTN WordAddr;\r | |
912 | UINTN BlockSize;\r | |
913 | UINTN BlockAddress;\r | |
914 | UINTN PrevBlockAddress;\r | |
915 | \r | |
916 | PrevBlockAddress = 0;\r | |
917 | \r | |
36d66acf | 918 | DEBUG ((DEBUG_BLKIO, "NorFlashWriteSingleBlock(Parameters: Lba=%ld, Offset=0x%x, *NumBytes=0x%x, Buffer @ 0x%08x)\n", Lba, Offset, *NumBytes, Buffer));\r |
452a9ee1 BJ |
919 | \r |
920 | // Detect WriteDisabled state\r | |
921 | if (Instance->Media.ReadOnly == TRUE) {\r | |
922 | DEBUG ((EFI_D_ERROR, "NorFlashWriteSingleBlock: ERROR - Can not write: Device is in WriteDisabled state.\n"));\r | |
923 | // It is in WriteDisabled state, return an error right away\r | |
924 | return EFI_ACCESS_DENIED;\r | |
925 | }\r | |
926 | \r | |
927 | // Cache the block size to avoid de-referencing pointers all the time\r | |
928 | BlockSize = Instance->Media.BlockSize;\r | |
929 | \r | |
930 | // The write must not span block boundaries.\r | |
931 | // We need to check each variable individually because adding two large values together overflows.\r | |
932 | if ( ( Offset >= BlockSize ) ||\r | |
933 | ( *NumBytes > BlockSize ) ||\r | |
934 | ( (Offset + *NumBytes) > BlockSize ) ) {\r | |
935 | DEBUG ((EFI_D_ERROR, "NorFlashWriteSingleBlock: ERROR - EFI_BAD_BUFFER_SIZE: (Offset=0x%x + NumBytes=0x%x) > BlockSize=0x%x\n", Offset, *NumBytes, BlockSize ));\r | |
936 | return EFI_BAD_BUFFER_SIZE;\r | |
937 | }\r | |
938 | \r | |
939 | // We must have some bytes to write\r | |
940 | if (*NumBytes == 0) {\r | |
941 | DEBUG ((EFI_D_ERROR, "NorFlashWriteSingleBlock: ERROR - EFI_BAD_BUFFER_SIZE: (Offset=0x%x + NumBytes=0x%x) > BlockSize=0x%x\n", Offset, *NumBytes, BlockSize ));\r | |
942 | return EFI_BAD_BUFFER_SIZE;\r | |
943 | }\r | |
944 | \r | |
945 | // Pick 128bytes as a good start for word operations as opposed to erasing the\r | |
946 | // block and writing the data regardless if an erase is really needed.\r | |
947 | // It looks like most individual NV variable writes are smaller than 128bytes.\r | |
948 | if (*NumBytes <= 128) {\r | |
949 | // Check to see if we need to erase before programming the data into NOR.\r | |
950 | // If the destination bits are only changing from 1s to 0s we can just write.\r | |
951 | // After a block is erased all bits in the block is set to 1.\r | |
952 | // If any byte requires us to erase we just give up and rewrite all of it.\r | |
953 | DoErase = FALSE;\r | |
954 | BytesToWrite = *NumBytes;\r | |
955 | CurOffset = Offset;\r | |
956 | \r | |
957 | while (BytesToWrite > 0) {\r | |
958 | // Read full word from NOR, splice as required. A word is the smallest\r | |
959 | // unit we can write.\r | |
36d66acf | 960 | TempStatus = NorFlashRead (Instance, Lba, CurOffset & ~(0x3), sizeof(Tmp), &Tmp);\r |
452a9ee1 BJ |
961 | if (EFI_ERROR (TempStatus)) {\r |
962 | return EFI_DEVICE_ERROR;\r | |
963 | }\r | |
964 | \r | |
965 | // Physical address of word in NOR to write.\r | |
966 | WordAddr = (CurOffset & ~(0x3)) + GET_NOR_BLOCK_ADDRESS (Instance->RegionBaseAddress,\r | |
967 | Lba, BlockSize);\r | |
968 | // The word of data that is to be written.\r | |
969 | TmpBuf = *((UINT32*)(Buffer + (*NumBytes - BytesToWrite)));\r | |
970 | \r | |
971 | // First do word aligned chunks.\r | |
972 | if ((CurOffset & 0x3) == 0) {\r | |
973 | if (BytesToWrite >= 4) {\r | |
974 | // Is the destination still in 'erased' state?\r | |
975 | if (~Tmp != 0) {\r | |
976 | // Check to see if we are only changing bits to zero.\r | |
977 | if ((Tmp ^ TmpBuf) & TmpBuf) {\r | |
978 | DoErase = TRUE;\r | |
979 | break;\r | |
980 | }\r | |
981 | }\r | |
982 | // Write this word to NOR\r | |
983 | WordToWrite = TmpBuf;\r | |
984 | CurOffset += sizeof(TmpBuf);\r | |
985 | BytesToWrite -= sizeof(TmpBuf);\r | |
986 | } else {\r | |
987 | // BytesToWrite < 4. Do small writes and left-overs\r | |
988 | Mask = ~((~0) << (BytesToWrite * 8));\r | |
989 | // Mask out the bytes we want.\r | |
990 | TmpBuf &= Mask;\r | |
991 | // Is the destination still in 'erased' state?\r | |
992 | if ((Tmp & Mask) != Mask) {\r | |
993 | // Check to see if we are only changing bits to zero.\r | |
994 | if ((Tmp ^ TmpBuf) & TmpBuf) {\r | |
995 | DoErase = TRUE;\r | |
996 | break;\r | |
997 | }\r | |
998 | }\r | |
999 | // Merge old and new data. Write merged word to NOR\r | |
1000 | WordToWrite = (Tmp & ~Mask) | TmpBuf;\r | |
1001 | CurOffset += BytesToWrite;\r | |
1002 | BytesToWrite = 0;\r | |
1003 | }\r | |
1004 | } else {\r | |
1005 | // Do multiple words, but starting unaligned.\r | |
1006 | if (BytesToWrite > (4 - (CurOffset & 0x3))) {\r | |
1007 | Mask = ((~0) << ((CurOffset & 0x3) * 8));\r | |
1008 | // Mask out the bytes we want.\r | |
1009 | TmpBuf &= Mask;\r | |
1010 | // Is the destination still in 'erased' state?\r | |
1011 | if ((Tmp & Mask) != Mask) {\r | |
1012 | // Check to see if we are only changing bits to zero.\r | |
1013 | if ((Tmp ^ TmpBuf) & TmpBuf) {\r | |
1014 | DoErase = TRUE;\r | |
1015 | break;\r | |
1016 | }\r | |
1017 | }\r | |
1018 | // Merge old and new data. Write merged word to NOR\r | |
1019 | WordToWrite = (Tmp & ~Mask) | TmpBuf;\r | |
1020 | BytesToWrite -= (4 - (CurOffset & 0x3));\r | |
1021 | CurOffset += (4 - (CurOffset & 0x3));\r | |
1022 | } else {\r | |
1023 | // Unaligned and fits in one word.\r | |
1024 | Mask = (~((~0) << (BytesToWrite * 8))) << ((CurOffset & 0x3) * 8);\r | |
1025 | // Mask out the bytes we want.\r | |
1026 | TmpBuf = (TmpBuf << ((CurOffset & 0x3) * 8)) & Mask;\r | |
1027 | // Is the destination still in 'erased' state?\r | |
1028 | if ((Tmp & Mask) != Mask) {\r | |
1029 | // Check to see if we are only changing bits to zero.\r | |
1030 | if ((Tmp ^ TmpBuf) & TmpBuf) {\r | |
1031 | DoErase = TRUE;\r | |
1032 | break;\r | |
1033 | }\r | |
1034 | }\r | |
1035 | // Merge old and new data. Write merged word to NOR\r | |
1036 | WordToWrite = (Tmp & ~Mask) | TmpBuf;\r | |
1037 | CurOffset += BytesToWrite;\r | |
1038 | BytesToWrite = 0;\r | |
1039 | }\r | |
1040 | }\r | |
1041 | \r | |
1042 | //\r | |
1043 | // Write the word to NOR.\r | |
1044 | //\r | |
1045 | \r | |
1046 | BlockAddress = GET_NOR_BLOCK_ADDRESS (Instance->RegionBaseAddress, Lba, BlockSize);\r | |
1047 | if (BlockAddress != PrevBlockAddress) {\r | |
1048 | TempStatus = NorFlashUnlockSingleBlockIfNecessary (Instance, BlockAddress);\r | |
1049 | if (EFI_ERROR (TempStatus)) {\r | |
1050 | return EFI_DEVICE_ERROR;\r | |
1051 | }\r | |
1052 | PrevBlockAddress = BlockAddress;\r | |
1053 | }\r | |
1054 | TempStatus = NorFlashWriteSingleWord (Instance, WordAddr, WordToWrite);\r | |
1055 | if (EFI_ERROR (TempStatus)) {\r | |
1056 | return EFI_DEVICE_ERROR;\r | |
1057 | }\r | |
1058 | }\r | |
1059 | // Exit if we got here and could write all the data. Otherwise do the\r | |
1060 | // Erase-Write cycle.\r | |
1061 | if (!DoErase) {\r | |
1062 | return EFI_SUCCESS;\r | |
1063 | }\r | |
1064 | }\r | |
1065 | \r | |
1066 | // Check we did get some memory. Buffer is BlockSize.\r | |
1067 | if (Instance->ShadowBuffer == NULL) {\r | |
1068 | DEBUG ((EFI_D_ERROR, "FvbWrite: ERROR - Buffer not ready\n"));\r | |
1069 | return EFI_DEVICE_ERROR;\r | |
1070 | }\r | |
1071 | \r | |
1072 | // Read NOR Flash data into shadow buffer\r | |
36d66acf | 1073 | TempStatus = NorFlashReadBlocks (Instance, Lba, BlockSize, Instance->ShadowBuffer);\r |
452a9ee1 BJ |
1074 | if (EFI_ERROR (TempStatus)) {\r |
1075 | // Return one of the pre-approved error statuses\r | |
1076 | return EFI_DEVICE_ERROR;\r | |
1077 | }\r | |
1078 | \r | |
1079 | // Put the data at the appropriate location inside the buffer area\r | |
1080 | CopyMem ((VOID*)((UINTN)Instance->ShadowBuffer + Offset), Buffer, *NumBytes);\r | |
1081 | \r | |
1082 | // Write the modified buffer back to the NorFlash\r | |
36d66acf | 1083 | TempStatus = NorFlashWriteBlocks (Instance, Lba, BlockSize, Instance->ShadowBuffer);\r |
452a9ee1 BJ |
1084 | if (EFI_ERROR (TempStatus)) {\r |
1085 | // Return one of the pre-approved error statuses\r | |
1086 | return EFI_DEVICE_ERROR;\r | |
1087 | }\r | |
1088 | \r | |
1089 | return EFI_SUCCESS;\r | |
1090 | }\r | |
1091 | \r | |
1092 | /*\r | |
1093 | Although DiskIoDxe will automatically install the DiskIO protocol whenever\r | |
1094 | we install the BlockIO protocol, its implementation is sub-optimal as it reads\r | |
1095 | and writes entire blocks using the BlockIO protocol. In fact we can access\r | |
1096 | NOR flash with a finer granularity than that, so we can improve performance\r | |
1097 | by directly producing the DiskIO protocol.\r | |
1098 | */\r | |
1099 | \r | |
1100 | /**\r | |
1101 | Read BufferSize bytes from Offset into Buffer.\r | |
1102 | \r | |
1103 | @param This Protocol instance pointer.\r | |
1104 | @param MediaId Id of the media, changes every time the media is replaced.\r | |
1105 | @param Offset The starting byte offset to read from\r | |
1106 | @param BufferSize Size of Buffer\r | |
1107 | @param Buffer Buffer containing read data\r | |
1108 | \r | |
1109 | @retval EFI_SUCCESS The data was read correctly from the device.\r | |
1110 | @retval EFI_DEVICE_ERROR The device reported an error while performing the read.\r | |
1111 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
16f3544d | 1112 | @retval EFI_MEDIA_CHANGED The MediaId does not match the current device.\r |
452a9ee1 BJ |
1113 | @retval EFI_INVALID_PARAMETER The read request contains device addresses that are not\r |
1114 | valid for the device.\r | |
1115 | \r | |
1116 | **/\r | |
1117 | EFI_STATUS\r | |
1118 | EFIAPI\r | |
1119 | NorFlashDiskIoReadDisk (\r | |
1120 | IN EFI_DISK_IO_PROTOCOL *This,\r | |
1121 | IN UINT32 MediaId,\r | |
1122 | IN UINT64 DiskOffset,\r | |
1123 | IN UINTN BufferSize,\r | |
1124 | OUT VOID *Buffer\r | |
1125 | )\r | |
1126 | {\r | |
1127 | NOR_FLASH_INSTANCE *Instance;\r | |
1128 | UINT32 BlockSize;\r | |
1129 | UINT32 BlockOffset;\r | |
1130 | EFI_LBA Lba;\r | |
1131 | \r | |
1132 | Instance = INSTANCE_FROM_DISKIO_THIS(This);\r | |
1133 | \r | |
1134 | if (MediaId != Instance->Media.MediaId) {\r | |
1135 | return EFI_MEDIA_CHANGED;\r | |
1136 | }\r | |
1137 | \r | |
1138 | BlockSize = Instance->Media.BlockSize;\r | |
1139 | Lba = (EFI_LBA) DivU64x32Remainder (DiskOffset, BlockSize, &BlockOffset);\r | |
1140 | \r | |
1141 | return NorFlashRead (Instance, Lba, BlockOffset, BufferSize, Buffer);\r | |
1142 | }\r | |
1143 | \r | |
1144 | /**\r | |
1145 | Writes a specified number of bytes to a device.\r | |
1146 | \r | |
1147 | @param This Indicates a pointer to the calling context.\r | |
1148 | @param MediaId ID of the medium to be written.\r | |
1149 | @param Offset The starting byte offset on the logical block I/O device to write.\r | |
1150 | @param BufferSize The size in bytes of Buffer. The number of bytes to write to the device.\r | |
1151 | @param Buffer A pointer to the buffer containing the data to be written.\r | |
1152 | \r | |
1153 | @retval EFI_SUCCESS The data was written correctly to the device.\r | |
1154 | @retval EFI_WRITE_PROTECTED The device can not be written to.\r | |
1155 | @retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r | |
1156 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
16f3544d | 1157 | @retval EFI_MEDIA_CHANGED The MediaId does not match the current device.\r |
452a9ee1 BJ |
1158 | @retval EFI_INVALID_PARAMETER The write request contains device addresses that are not\r |
1159 | valid for the device.\r | |
1160 | \r | |
1161 | **/\r | |
1162 | EFI_STATUS\r | |
1163 | EFIAPI\r | |
1164 | NorFlashDiskIoWriteDisk (\r | |
1165 | IN EFI_DISK_IO_PROTOCOL *This,\r | |
1166 | IN UINT32 MediaId,\r | |
1167 | IN UINT64 DiskOffset,\r | |
1168 | IN UINTN BufferSize,\r | |
1169 | IN VOID *Buffer\r | |
1170 | )\r | |
1171 | {\r | |
1172 | NOR_FLASH_INSTANCE *Instance;\r | |
1173 | UINT32 BlockSize;\r | |
1174 | UINT32 BlockOffset;\r | |
1175 | EFI_LBA Lba;\r | |
1176 | UINTN RemainingBytes;\r | |
1177 | UINTN WriteSize;\r | |
1178 | EFI_STATUS Status;\r | |
1179 | \r | |
1180 | Instance = INSTANCE_FROM_DISKIO_THIS(This);\r | |
1181 | \r | |
1182 | if (MediaId != Instance->Media.MediaId) {\r | |
1183 | return EFI_MEDIA_CHANGED;\r | |
1184 | }\r | |
1185 | \r | |
1186 | BlockSize = Instance->Media.BlockSize;\r | |
1187 | Lba = (EFI_LBA) DivU64x32Remainder (DiskOffset, BlockSize, &BlockOffset);\r | |
1188 | \r | |
1189 | RemainingBytes = BufferSize;\r | |
1190 | \r | |
1191 | // Write either all the remaining bytes, or the number of bytes that bring\r | |
1192 | // us up to a block boundary, whichever is less.\r | |
1193 | // (DiskOffset | (BlockSize - 1)) + 1) rounds DiskOffset up to the next\r | |
1194 | // block boundary (even if it is already on one).\r | |
1195 | WriteSize = MIN (RemainingBytes, ((DiskOffset | (BlockSize - 1)) + 1) - DiskOffset);\r | |
1196 | \r | |
1197 | do {\r | |
1198 | if (WriteSize == BlockSize) {\r | |
1199 | // Write a full block\r | |
1200 | Status = NorFlashWriteFullBlock (Instance, Lba, Buffer, BlockSize / sizeof (UINT32));\r | |
1201 | } else {\r | |
1202 | // Write a partial block\r | |
1203 | Status = NorFlashWriteSingleBlock (Instance, Lba, BlockOffset, &WriteSize, Buffer);\r | |
1204 | }\r | |
1205 | if (EFI_ERROR (Status)) {\r | |
1206 | return Status;\r | |
1207 | }\r | |
1208 | // Now continue writing either all the remaining bytes or single blocks.\r | |
1209 | RemainingBytes -= WriteSize;\r | |
1210 | Buffer = (UINT8 *) Buffer + WriteSize;\r | |
1211 | Lba++;\r | |
1212 | BlockOffset = 0;\r | |
1213 | WriteSize = MIN (RemainingBytes, BlockSize);\r | |
1214 | } while (RemainingBytes);\r | |
1215 | \r | |
1216 | return Status;\r | |
1217 | }\r | |
518c243d | 1218 | \r |
1e57a462 | 1219 | EFI_STATUS\r |
1220 | NorFlashReset (\r | |
1221 | IN NOR_FLASH_INSTANCE *Instance\r | |
1222 | )\r | |
1223 | {\r | |
1224 | // As there is no specific RESET to perform, ensure that the devices is in the default Read Array mode\r | |
1225 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);\r | |
1226 | return EFI_SUCCESS;\r | |
1227 | }\r | |
1228 | \r | |
1dbbfc17 OM |
1229 | /**\r |
1230 | Fixup internal data so that EFI can be call in virtual mode.\r | |
1231 | Call the passed in Child Notify event and convert any pointers in\r | |
1232 | lib to virtual mode.\r | |
1233 | \r | |
1234 | @param[in] Event The Event that is being processed\r | |
1235 | @param[in] Context Event Context\r | |
1236 | **/\r | |
1237 | VOID\r | |
1238 | EFIAPI\r | |
1239 | NorFlashVirtualNotifyEvent (\r | |
1240 | IN EFI_EVENT Event,\r | |
1241 | IN VOID *Context\r | |
1242 | )\r | |
1243 | {\r | |
1244 | UINTN Index;\r | |
1245 | \r | |
1246 | for (Index = 0; Index < mNorFlashDeviceCount; Index++) {\r | |
1247 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->DeviceBaseAddress);\r | |
1248 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->RegionBaseAddress);\r | |
1249 | \r | |
1250 | // Convert BlockIo protocol\r | |
1251 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->BlockIoProtocol.FlushBlocks);\r | |
1252 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->BlockIoProtocol.ReadBlocks);\r | |
1253 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->BlockIoProtocol.Reset);\r | |
1254 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->BlockIoProtocol.WriteBlocks);\r | |
1255 | \r | |
1256 | // Convert Fvb\r | |
1257 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->FvbProtocol.EraseBlocks);\r | |
1258 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->FvbProtocol.GetAttributes);\r | |
1259 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->FvbProtocol.GetBlockSize);\r | |
1260 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->FvbProtocol.GetPhysicalAddress);\r | |
1261 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->FvbProtocol.Read);\r | |
1262 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->FvbProtocol.SetAttributes);\r | |
1263 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->FvbProtocol.Write);\r | |
1264 | \r | |
452a9ee1 BJ |
1265 | if (mNorFlashInstances[Index]->ShadowBuffer != NULL) {\r |
1266 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->ShadowBuffer);\r | |
1dbbfc17 OM |
1267 | }\r |
1268 | }\r | |
1269 | \r | |
1270 | return;\r | |
1271 | }\r | |
1272 | \r | |
1e57a462 | 1273 | EFI_STATUS\r |
1274 | EFIAPI\r | |
1275 | NorFlashInitialise (\r | |
1276 | IN EFI_HANDLE ImageHandle,\r | |
1277 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
1278 | )\r | |
1279 | {\r | |
1280 | EFI_STATUS Status;\r | |
1281 | UINT32 Index;\r | |
1282 | NOR_FLASH_DESCRIPTION* NorFlashDevices;\r | |
1e57a462 | 1283 | BOOLEAN ContainVariableStorage;\r |
1284 | \r | |
1285 | Status = NorFlashPlatformInitialization ();\r | |
1286 | if (EFI_ERROR(Status)) {\r | |
1287 | DEBUG((EFI_D_ERROR,"NorFlashInitialise: Fail to initialize Nor Flash devices\n"));\r | |
1288 | return Status;\r | |
1289 | }\r | |
1290 | \r | |
1dbbfc17 | 1291 | Status = NorFlashPlatformGetDevices (&NorFlashDevices, &mNorFlashDeviceCount);\r |
1e57a462 | 1292 | if (EFI_ERROR(Status)) {\r |
1293 | DEBUG((EFI_D_ERROR,"NorFlashInitialise: Fail to get Nor Flash devices\n"));\r | |
1294 | return Status;\r | |
1295 | }\r | |
1296 | \r | |
1dbbfc17 | 1297 | mNorFlashInstances = AllocateRuntimePool (sizeof(NOR_FLASH_INSTANCE*) * mNorFlashDeviceCount);\r |
1e57a462 | 1298 | \r |
1dbbfc17 | 1299 | for (Index = 0; Index < mNorFlashDeviceCount; Index++) {\r |
1e57a462 | 1300 | // Check if this NOR Flash device contain the variable storage region\r |
1301 | ContainVariableStorage =\r | |
1302 | (NorFlashDevices[Index].RegionBaseAddress <= PcdGet32 (PcdFlashNvStorageVariableBase)) &&\r | |
1303 | (PcdGet32 (PcdFlashNvStorageVariableBase) + PcdGet32 (PcdFlashNvStorageVariableSize) <= NorFlashDevices[Index].RegionBaseAddress + NorFlashDevices[Index].Size);\r | |
1304 | \r | |
1305 | Status = NorFlashCreateInstance (\r | |
1306 | NorFlashDevices[Index].DeviceBaseAddress,\r | |
1307 | NorFlashDevices[Index].RegionBaseAddress,\r | |
1308 | NorFlashDevices[Index].Size,\r | |
1309 | Index,\r | |
1310 | NorFlashDevices[Index].BlockSize,\r | |
1311 | ContainVariableStorage,\r | |
1e57a462 | 1312 | &mNorFlashInstances[Index]\r |
1313 | );\r | |
1314 | if (EFI_ERROR(Status)) {\r | |
1315 | DEBUG((EFI_D_ERROR,"NorFlashInitialise: Fail to create instance for NorFlash[%d]\n",Index));\r | |
1316 | }\r | |
1317 | }\r | |
1318 | \r | |
1dbbfc17 OM |
1319 | //\r |
1320 | // Register for the virtual address change event\r | |
1321 | //\r | |
1322 | Status = gBS->CreateEventEx (\r | |
1323 | EVT_NOTIFY_SIGNAL,\r | |
1324 | TPL_NOTIFY,\r | |
1325 | NorFlashVirtualNotifyEvent,\r | |
1326 | NULL,\r | |
1327 | &gEfiEventVirtualAddressChangeGuid,\r | |
1328 | &mNorFlashVirtualAddrChangeEvent\r | |
1329 | );\r | |
1330 | ASSERT_EFI_ERROR (Status);\r | |
1331 | \r | |
1e57a462 | 1332 | return Status;\r |
1333 | }\r |