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1e57a462 | 1 | /** @file NorFlashDxe.c\r |
2 | \r | |
2dff0c1a | 3 | Copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>\r |
1e57a462 | 4 | \r |
5 | This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include <Library/UefiLib.h>\r | |
16 | #include <Library/BaseMemoryLib.h>\r | |
17 | #include <Library/MemoryAllocationLib.h>\r | |
18 | #include <Library/UefiBootServicesTableLib.h>\r | |
19 | #include <Library/PcdLib.h>\r | |
20 | \r | |
21 | #include "NorFlashDxe.h"\r | |
22 | \r | |
1dbbfc17 | 23 | STATIC EFI_EVENT mNorFlashVirtualAddrChangeEvent;\r |
1e57a462 | 24 | \r |
25 | //\r | |
26 | // Global variable declarations\r | |
27 | //\r | |
28 | NOR_FLASH_INSTANCE **mNorFlashInstances;\r | |
1dbbfc17 | 29 | UINT32 mNorFlashDeviceCount;\r |
1e57a462 | 30 | \r |
31 | NOR_FLASH_INSTANCE mNorFlashInstanceTemplate = {\r | |
32 | NOR_FLASH_SIGNATURE, // Signature\r | |
33 | NULL, // Handle ... NEED TO BE FILLED\r | |
34 | \r | |
35 | FALSE, // Initialized\r | |
36 | NULL, // Initialize\r | |
37 | \r | |
38 | 0, // DeviceBaseAddress ... NEED TO BE FILLED\r | |
39 | 0, // RegionBaseAddress ... NEED TO BE FILLED\r | |
40 | 0, // Size ... NEED TO BE FILLED\r | |
41 | 0, // StartLba\r | |
42 | \r | |
1d5d0ae9 | 43 | {\r |
44 | EFI_BLOCK_IO_PROTOCOL_REVISION2, // Revision\r | |
45 | NULL, // Media ... NEED TO BE FILLED\r | |
46 | NorFlashBlockIoReset, // Reset;\r | |
1e57a462 | 47 | NorFlashBlockIoReadBlocks, // ReadBlocks\r |
48 | NorFlashBlockIoWriteBlocks, // WriteBlocks\r | |
1d5d0ae9 | 49 | NorFlashBlockIoFlushBlocks // FlushBlocks\r |
1e57a462 | 50 | }, // BlockIoProtocol\r |
51 | \r | |
1d5d0ae9 | 52 | {\r |
53 | 0, // MediaId ... NEED TO BE FILLED\r | |
54 | FALSE, // RemovableMedia\r | |
55 | TRUE, // MediaPresent\r | |
56 | FALSE, // LogicalPartition\r | |
57 | FALSE, // ReadOnly\r | |
58 | FALSE, // WriteCaching;\r | |
59 | 0, // BlockSize ... NEED TO BE FILLED\r | |
60 | 4, // IoAlign\r | |
61 | 0, // LastBlock ... NEED TO BE FILLED\r | |
62 | 0, // LowestAlignedLba\r | |
63 | 1, // LogicalBlocksPerPhysicalBlock\r | |
1e57a462 | 64 | }, //Media;\r |
65 | \r | |
66 | FALSE, // SupportFvb ... NEED TO BE FILLED\r | |
1d5d0ae9 | 67 | {\r |
1e57a462 | 68 | FvbGetAttributes, // GetAttributes\r |
69 | FvbSetAttributes, // SetAttributes\r | |
70 | FvbGetPhysicalAddress, // GetPhysicalAddress\r | |
71 | FvbGetBlockSize, // GetBlockSize\r | |
72 | FvbRead, // Read\r | |
73 | FvbWrite, // Write\r | |
1d5d0ae9 | 74 | FvbEraseBlocks, // EraseBlocks\r |
75 | NULL, //ParentHandle\r | |
1e57a462 | 76 | }, // FvbProtoccol;\r |
2dff0c1a | 77 | NULL, // FvbBuffer\r |
1e57a462 | 78 | {\r |
79 | {\r | |
80 | {\r | |
81 | HARDWARE_DEVICE_PATH,\r | |
82 | HW_VENDOR_DP,\r | |
83 | (UINT8)( sizeof(VENDOR_DEVICE_PATH) ),\r | |
84 | (UINT8)((sizeof(VENDOR_DEVICE_PATH)) >> 8),\r | |
85 | },\r | |
86 | { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 }, // GUID ... NEED TO BE FILLED\r | |
87 | },\r | |
88 | {\r | |
89 | END_DEVICE_PATH_TYPE,\r | |
90 | END_ENTIRE_DEVICE_PATH_SUBTYPE,\r | |
91 | sizeof (EFI_DEVICE_PATH_PROTOCOL),\r | |
92 | 0\r | |
93 | }\r | |
94 | } // DevicePath\r | |
95 | };\r | |
96 | \r | |
97 | EFI_STATUS\r | |
98 | NorFlashCreateInstance (\r | |
99 | IN UINTN NorFlashDeviceBase,\r | |
100 | IN UINTN NorFlashRegionBase,\r | |
101 | IN UINTN NorFlashSize,\r | |
102 | IN UINT32 MediaId,\r | |
103 | IN UINT32 BlockSize,\r | |
104 | IN BOOLEAN SupportFvb,\r | |
105 | IN CONST GUID *NorFlashGuid,\r | |
106 | OUT NOR_FLASH_INSTANCE** NorFlashInstance\r | |
107 | )\r | |
108 | {\r | |
109 | EFI_STATUS Status;\r | |
110 | NOR_FLASH_INSTANCE* Instance;\r | |
111 | \r | |
112 | ASSERT(NorFlashInstance != NULL);\r | |
113 | \r | |
2dff0c1a | 114 | Instance = AllocateRuntimeCopyPool (sizeof(NOR_FLASH_INSTANCE),&mNorFlashInstanceTemplate);\r |
1e57a462 | 115 | if (Instance == NULL) {\r |
116 | return EFI_OUT_OF_RESOURCES;\r | |
117 | }\r | |
118 | \r | |
119 | Instance->DeviceBaseAddress = NorFlashDeviceBase;\r | |
120 | Instance->RegionBaseAddress = NorFlashRegionBase;\r | |
121 | Instance->Size = NorFlashSize;\r | |
122 | \r | |
123 | Instance->BlockIoProtocol.Media = &Instance->Media;\r | |
124 | Instance->Media.MediaId = MediaId;\r | |
125 | Instance->Media.BlockSize = BlockSize;\r | |
126 | Instance->Media.LastBlock = (NorFlashSize / BlockSize)-1;\r | |
1d5d0ae9 | 127 | \r |
2dff0c1a | 128 | CopyGuid (&Instance->DevicePath.Vendor.Guid, NorFlashGuid);\r |
1e57a462 | 129 | \r |
130 | if (SupportFvb) {\r | |
131 | Instance->SupportFvb = TRUE;\r | |
132 | Instance->Initialize = NorFlashFvbInitialize;\r | |
2dff0c1a OM |
133 | Instance->FvbBuffer = AllocateRuntimePool (BlockSize);;\r |
134 | if (Instance->FvbBuffer == NULL) {\r | |
135 | return EFI_OUT_OF_RESOURCES;\r | |
136 | }\r | |
1e57a462 | 137 | \r |
138 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
139 | &Instance->Handle,\r | |
140 | &gEfiDevicePathProtocolGuid, &Instance->DevicePath,\r | |
141 | &gEfiBlockIoProtocolGuid, &Instance->BlockIoProtocol,\r | |
142 | &gEfiFirmwareVolumeBlockProtocolGuid, &Instance->FvbProtocol,\r | |
143 | NULL\r | |
144 | );\r | |
145 | if (EFI_ERROR(Status)) {\r | |
2dff0c1a | 146 | FreePool (Instance);\r |
1e57a462 | 147 | return Status;\r |
148 | }\r | |
149 | } else {\r | |
150 | Instance->Initialized = TRUE;\r | |
151 | \r | |
152 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
153 | &Instance->Handle,\r | |
154 | &gEfiDevicePathProtocolGuid, &Instance->DevicePath,\r | |
155 | &gEfiBlockIoProtocolGuid, &Instance->BlockIoProtocol,\r | |
156 | NULL\r | |
157 | );\r | |
158 | if (EFI_ERROR(Status)) {\r | |
2dff0c1a | 159 | FreePool (Instance);\r |
1e57a462 | 160 | return Status;\r |
161 | }\r | |
162 | }\r | |
1d5d0ae9 | 163 | \r |
164 | *NorFlashInstance = Instance;\r | |
1e57a462 | 165 | return Status;\r |
166 | }\r | |
167 | \r | |
168 | UINT32\r | |
169 | NorFlashReadStatusRegister (\r | |
170 | IN NOR_FLASH_INSTANCE *Instance,\r | |
171 | IN UINTN SR_Address\r | |
172 | )\r | |
173 | {\r | |
174 | // Prepare to read the status register\r | |
175 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_STATUS_REGISTER);\r | |
176 | return MmioRead32 (Instance->DeviceBaseAddress);\r | |
177 | }\r | |
178 | \r | |
179 | \r | |
180 | BOOLEAN\r | |
181 | NorFlashBlockIsLocked (\r | |
182 | IN NOR_FLASH_INSTANCE *Instance,\r | |
183 | IN UINTN BlockAddress\r | |
184 | )\r | |
185 | {\r | |
186 | UINT32 LockStatus;\r | |
187 | BOOLEAN BlockIsLocked;\r | |
188 | \r | |
189 | BlockIsLocked = TRUE;\r | |
190 | \r | |
191 | // Send command for reading device id\r | |
192 | SEND_NOR_COMMAND (BlockAddress, 2, P30_CMD_READ_DEVICE_ID);\r | |
193 | \r | |
194 | // Read block lock status\r | |
195 | LockStatus = MmioRead32 (CREATE_NOR_ADDRESS(BlockAddress, 2));\r | |
196 | \r | |
197 | // Decode block lock status\r | |
198 | LockStatus = FOLD_32BIT_INTO_16BIT(LockStatus);\r | |
199 | \r | |
200 | if ((LockStatus & 0x2) != 0) {\r | |
201 | DEBUG((EFI_D_ERROR, "NorFlashBlockIsLocked: WARNING: Block LOCKED DOWN\n"));\r | |
202 | }\r | |
203 | \r | |
204 | if ((LockStatus & 0x1) == 0) {\r | |
205 | // This means the block is unlocked\r | |
206 | DEBUG((DEBUG_BLKIO, "UnlockSingleBlock: Block 0x%08x unlocked\n", BlockAddress));\r | |
207 | BlockIsLocked = FALSE;\r | |
208 | }\r | |
209 | \r | |
210 | return BlockIsLocked;\r | |
211 | }\r | |
212 | \r | |
213 | \r | |
214 | EFI_STATUS\r | |
215 | NorFlashUnlockSingleBlock (\r | |
216 | IN NOR_FLASH_INSTANCE *Instance,\r | |
217 | IN UINTN BlockAddress\r | |
218 | )\r | |
219 | {\r | |
220 | EFI_STATUS Status = EFI_SUCCESS;\r | |
221 | UINT32 LockStatus;\r | |
222 | \r | |
223 | // Raise the Task Priority Level to TPL_NOTIFY to serialise all its operations\r | |
224 | // and to protect shared data structures.\r | |
225 | \r | |
226 | if (FeaturePcdGet (PcdNorFlashCheckBlockLocked) == TRUE) {\r | |
227 | do {\r | |
228 | // Request a lock setup\r | |
229 | SEND_NOR_COMMAND (BlockAddress, 0, P30_CMD_LOCK_BLOCK_SETUP);\r | |
230 | \r | |
231 | // Request an unlock\r | |
232 | SEND_NOR_COMMAND (BlockAddress, 0, P30_CMD_UNLOCK_BLOCK);\r | |
233 | \r | |
234 | // Send command for reading device id\r | |
235 | SEND_NOR_COMMAND (BlockAddress, 2, P30_CMD_READ_DEVICE_ID);\r | |
236 | \r | |
237 | // Read block lock status\r | |
238 | LockStatus = MmioRead32 (CREATE_NOR_ADDRESS(BlockAddress, 2));\r | |
239 | \r | |
240 | // Decode block lock status\r | |
241 | LockStatus = FOLD_32BIT_INTO_16BIT(LockStatus);\r | |
242 | } while ((LockStatus & 0x1) == 1);\r | |
243 | } else {\r | |
244 | // Request a lock setup\r | |
245 | SEND_NOR_COMMAND (BlockAddress, 0, P30_CMD_LOCK_BLOCK_SETUP);\r | |
246 | \r | |
247 | // Request an unlock\r | |
248 | SEND_NOR_COMMAND (BlockAddress, 0, P30_CMD_UNLOCK_BLOCK);\r | |
249 | \r | |
250 | // Wait until the status register gives us the all clear\r | |
251 | do {\r | |
252 | LockStatus = NorFlashReadStatusRegister (Instance, BlockAddress);\r | |
253 | } while ((LockStatus & P30_SR_BIT_WRITE) != P30_SR_BIT_WRITE);\r | |
254 | }\r | |
255 | \r | |
256 | // Put device back into Read Array mode\r | |
257 | SEND_NOR_COMMAND (BlockAddress, 0, P30_CMD_READ_ARRAY);\r | |
258 | \r | |
259 | DEBUG((DEBUG_BLKIO, "UnlockSingleBlock: BlockAddress=0x%08x, Exit Status = \"%r\".\n", BlockAddress, Status));\r | |
260 | \r | |
261 | return Status;\r | |
262 | }\r | |
263 | \r | |
264 | \r | |
265 | EFI_STATUS\r | |
266 | NorFlashUnlockSingleBlockIfNecessary (\r | |
267 | IN NOR_FLASH_INSTANCE *Instance,\r | |
268 | IN UINTN BlockAddress\r | |
269 | )\r | |
270 | {\r | |
271 | EFI_STATUS Status = EFI_SUCCESS;\r | |
272 | \r | |
273 | if (NorFlashBlockIsLocked (Instance, BlockAddress) == TRUE) {\r | |
274 | Status = NorFlashUnlockSingleBlock (Instance, BlockAddress);\r | |
275 | }\r | |
276 | \r | |
277 | return Status;\r | |
278 | }\r | |
279 | \r | |
280 | \r | |
281 | /**\r | |
282 | * The following function presumes that the block has already been unlocked.\r | |
283 | **/\r | |
284 | EFI_STATUS\r | |
285 | NorFlashEraseSingleBlock (\r | |
286 | IN NOR_FLASH_INSTANCE *Instance,\r | |
287 | IN UINTN BlockAddress\r | |
288 | )\r | |
289 | {\r | |
290 | EFI_STATUS Status;\r | |
291 | UINT32 StatusRegister;\r | |
292 | \r | |
293 | Status = EFI_SUCCESS;\r | |
294 | \r | |
295 | // Request a block erase and then confirm it\r | |
296 | SEND_NOR_COMMAND(BlockAddress, 0, P30_CMD_BLOCK_ERASE_SETUP);\r | |
297 | SEND_NOR_COMMAND(BlockAddress, 0, P30_CMD_BLOCK_ERASE_CONFIRM);\r | |
298 | \r | |
299 | // Wait until the status register gives us the all clear\r | |
300 | do {\r | |
301 | StatusRegister = NorFlashReadStatusRegister (Instance, BlockAddress);\r | |
302 | } while ((StatusRegister & P30_SR_BIT_WRITE) != P30_SR_BIT_WRITE);\r | |
303 | \r | |
304 | if (StatusRegister & P30_SR_BIT_VPP) {\r | |
305 | DEBUG((EFI_D_ERROR,"EraseSingleBlock(BlockAddress=0x%08x: VPP Range Error\n", BlockAddress));\r | |
306 | Status = EFI_DEVICE_ERROR;\r | |
307 | }\r | |
308 | \r | |
309 | if ((StatusRegister & (P30_SR_BIT_ERASE | P30_SR_BIT_PROGRAM)) == (P30_SR_BIT_ERASE | P30_SR_BIT_PROGRAM)) {\r | |
310 | DEBUG((EFI_D_ERROR,"EraseSingleBlock(BlockAddress=0x%08x: Command Sequence Error\n", BlockAddress));\r | |
311 | Status = EFI_DEVICE_ERROR;\r | |
312 | }\r | |
313 | \r | |
314 | if (StatusRegister & P30_SR_BIT_ERASE) {\r | |
315 | DEBUG((EFI_D_ERROR,"EraseSingleBlock(BlockAddress=0x%08x: Block Erase Error StatusRegister:0x%X\n", BlockAddress, StatusRegister));\r | |
316 | Status = EFI_DEVICE_ERROR;\r | |
317 | }\r | |
318 | \r | |
319 | if (StatusRegister & P30_SR_BIT_BLOCK_LOCKED) {\r | |
320 | // The debug level message has been reduced because a device lock might happen. In this case we just retry it ...\r | |
321 | DEBUG((EFI_D_INFO,"EraseSingleBlock(BlockAddress=0x%08x: Block Locked Error\n", BlockAddress));\r | |
322 | Status = EFI_WRITE_PROTECTED;\r | |
323 | }\r | |
324 | \r | |
325 | if (EFI_ERROR(Status)) {\r | |
326 | // Clear the Status Register\r | |
327 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_CLEAR_STATUS_REGISTER);\r | |
328 | }\r | |
329 | \r | |
330 | // Put device back into Read Array mode\r | |
331 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);\r | |
332 | \r | |
333 | return Status;\r | |
334 | }\r | |
335 | \r | |
336 | /**\r | |
337 | * The following function presumes that the block has already been unlocked.\r | |
338 | **/\r | |
339 | EFI_STATUS\r | |
340 | NorFlashUnlockAndEraseSingleBlock (\r | |
341 | IN NOR_FLASH_INSTANCE *Instance,\r | |
342 | IN UINTN BlockAddress\r | |
343 | )\r | |
344 | {\r | |
345 | EFI_STATUS Status;\r | |
346 | UINTN Index;\r | |
347 | EFI_TPL OriginalTPL;\r | |
348 | \r | |
2dff0c1a OM |
349 | if (!EfiAtRuntime ()) {\r |
350 | // Raise TPL to TPL_HIGH to stop anyone from interrupting us.\r | |
351 | OriginalTPL = gBS->RaiseTPL (TPL_HIGH_LEVEL);\r | |
352 | } else {\r | |
353 | // This initialization is only to prevent the compiler to complain about the\r | |
354 | // use of uninitialized variables\r | |
355 | OriginalTPL = TPL_HIGH_LEVEL;\r | |
356 | }\r | |
1e57a462 | 357 | \r |
358 | Index = 0;\r | |
359 | // The block erase might fail a first time (SW bug ?). Retry it ...\r | |
360 | do {\r | |
361 | // Unlock the block if we have to\r | |
362 | Status = NorFlashUnlockSingleBlockIfNecessary (Instance, BlockAddress);\r | |
363 | if (!EFI_ERROR(Status)) {\r | |
364 | Status = NorFlashEraseSingleBlock (Instance, BlockAddress);\r | |
365 | }\r | |
366 | Index++;\r | |
367 | } while ((Index < NOR_FLASH_ERASE_RETRY) && (Status == EFI_WRITE_PROTECTED));\r | |
368 | \r | |
369 | if (Index == NOR_FLASH_ERASE_RETRY) {\r | |
370 | DEBUG((EFI_D_ERROR,"EraseSingleBlock(BlockAddress=0x%08x: Block Locked Error (try to erase %d times)\n", BlockAddress,Index));\r | |
371 | }\r | |
372 | \r | |
2dff0c1a OM |
373 | if (!EfiAtRuntime ()) {\r |
374 | // Interruptions can resume.\r | |
375 | gBS->RestoreTPL (OriginalTPL);\r | |
376 | }\r | |
1e57a462 | 377 | \r |
378 | return Status;\r | |
379 | }\r | |
380 | \r | |
381 | \r | |
382 | EFI_STATUS\r | |
383 | NorFlashWriteSingleWord (\r | |
384 | IN NOR_FLASH_INSTANCE *Instance,\r | |
385 | IN UINTN WordAddress,\r | |
386 | IN UINT32 WriteData\r | |
387 | )\r | |
388 | {\r | |
389 | EFI_STATUS Status;\r | |
390 | UINT32 StatusRegister;\r | |
391 | \r | |
392 | Status = EFI_SUCCESS;\r | |
393 | \r | |
394 | // Request a write single word command\r | |
395 | SEND_NOR_COMMAND(WordAddress, 0, P30_CMD_WORD_PROGRAM_SETUP);\r | |
396 | \r | |
397 | // Store the word into NOR Flash;\r | |
398 | MmioWrite32 (WordAddress, WriteData);\r | |
399 | \r | |
400 | // Wait for the write to complete and then check for any errors; i.e. check the Status Register\r | |
401 | do {\r | |
402 | // Prepare to read the status register\r | |
403 | StatusRegister = NorFlashReadStatusRegister (Instance, WordAddress);\r | |
404 | // The chip is busy while the WRITE bit is not asserted\r | |
405 | } while ((StatusRegister & P30_SR_BIT_WRITE) != P30_SR_BIT_WRITE);\r | |
406 | \r | |
407 | \r | |
408 | // Perform a full status check:\r | |
409 | // Mask the relevant bits of Status Register.\r | |
410 | // Everything should be zero, if not, we have a problem\r | |
411 | \r | |
412 | if (StatusRegister & P30_SR_BIT_VPP) {\r | |
413 | DEBUG((EFI_D_ERROR,"NorFlashWriteSingleWord(WordAddress:0x%X): VPP Range Error\n",WordAddress));\r | |
414 | Status = EFI_DEVICE_ERROR;\r | |
415 | }\r | |
416 | \r | |
417 | if (StatusRegister & P30_SR_BIT_PROGRAM) {\r | |
418 | DEBUG((EFI_D_ERROR,"NorFlashWriteSingleWord(WordAddress:0x%X): Program Error\n",WordAddress));\r | |
419 | Status = EFI_DEVICE_ERROR;\r | |
420 | }\r | |
421 | \r | |
422 | if (StatusRegister & P30_SR_BIT_BLOCK_LOCKED) {\r | |
423 | DEBUG((EFI_D_ERROR,"NorFlashWriteSingleWord(WordAddress:0x%X): Device Protect Error\n",WordAddress));\r | |
424 | Status = EFI_DEVICE_ERROR;\r | |
425 | }\r | |
426 | \r | |
427 | if (!EFI_ERROR(Status)) {\r | |
428 | // Clear the Status Register\r | |
429 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_CLEAR_STATUS_REGISTER);\r | |
430 | }\r | |
431 | \r | |
432 | // Put device back into Read Array mode\r | |
433 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);\r | |
434 | \r | |
435 | return Status;\r | |
436 | }\r | |
437 | \r | |
438 | /*\r | |
439 | * Writes data to the NOR Flash using the Buffered Programming method.\r | |
440 | *\r | |
441 | * The maximum size of the on-chip buffer is 32-words, because of hardware restrictions.\r | |
442 | * Therefore this function will only handle buffers up to 32 words or 128 bytes.\r | |
443 | * To deal with larger buffers, call this function again.\r | |
444 | *\r | |
445 | * This function presumes that both the TargetAddress and the TargetAddress+BufferSize\r | |
446 | * exist entirely within the NOR Flash. Therefore these conditions will not be checked here.\r | |
447 | *\r | |
448 | * In buffered programming, if the target address not at the beginning of a 32-bit word boundary,\r | |
449 | * then programming time is doubled and power consumption is increased.\r | |
450 | * Therefore, it is a requirement to align buffer writes to 32-bit word boundaries.\r | |
451 | * i.e. the last 4 bits of the target start address must be zero: 0x......00\r | |
452 | */\r | |
453 | EFI_STATUS\r | |
454 | NorFlashWriteBuffer (\r | |
455 | IN NOR_FLASH_INSTANCE *Instance,\r | |
456 | IN UINTN TargetAddress,\r | |
457 | IN UINTN BufferSizeInBytes,\r | |
458 | IN UINT32 *Buffer\r | |
459 | )\r | |
460 | {\r | |
461 | EFI_STATUS Status;\r | |
462 | UINTN BufferSizeInWords;\r | |
463 | UINTN Count;\r | |
464 | volatile UINT32 *Data;\r | |
465 | UINTN WaitForBuffer;\r | |
466 | BOOLEAN BufferAvailable;\r | |
467 | UINT32 StatusRegister;\r | |
468 | \r | |
469 | WaitForBuffer = MAX_BUFFERED_PROG_ITERATIONS;\r | |
470 | BufferAvailable = FALSE;\r | |
471 | \r | |
472 | // Check that the target address does not cross a 32-word boundary.\r | |
473 | if ((TargetAddress & BOUNDARY_OF_32_WORDS) != 0) {\r | |
474 | return EFI_INVALID_PARAMETER;\r | |
475 | }\r | |
476 | \r | |
477 | // Check there are some data to program\r | |
478 | if (BufferSizeInBytes == 0) {\r | |
479 | return EFI_BUFFER_TOO_SMALL;\r | |
480 | }\r | |
481 | \r | |
482 | // Check that the buffer size does not exceed the maximum hardware buffer size on chip.\r | |
483 | if (BufferSizeInBytes > P30_MAX_BUFFER_SIZE_IN_BYTES) {\r | |
484 | return EFI_BAD_BUFFER_SIZE;\r | |
485 | }\r | |
486 | \r | |
487 | // Check that the buffer size is a multiple of 32-bit words\r | |
488 | if ((BufferSizeInBytes % 4) != 0) {\r | |
489 | return EFI_BAD_BUFFER_SIZE;\r | |
490 | }\r | |
491 | \r | |
492 | // Pre-programming conditions checked, now start the algorithm.\r | |
493 | \r | |
494 | // Prepare the data destination address\r | |
495 | Data = (UINT32 *)TargetAddress;\r | |
496 | \r | |
497 | // Check the availability of the buffer\r | |
498 | do {\r | |
499 | // Issue the Buffered Program Setup command\r | |
500 | SEND_NOR_COMMAND(TargetAddress, 0, P30_CMD_BUFFERED_PROGRAM_SETUP);\r | |
501 | \r | |
502 | // Read back the status register bit#7 from the same address\r | |
503 | if (((*Data) & P30_SR_BIT_WRITE) == P30_SR_BIT_WRITE) {\r | |
504 | BufferAvailable = TRUE;\r | |
505 | }\r | |
506 | \r | |
507 | // Update the loop counter\r | |
508 | WaitForBuffer--;\r | |
509 | \r | |
510 | } while ((WaitForBuffer > 0) && (BufferAvailable == FALSE));\r | |
511 | \r | |
512 | // The buffer was not available for writing\r | |
513 | if (WaitForBuffer == 0) {\r | |
514 | Status = EFI_DEVICE_ERROR;\r | |
515 | goto EXIT;\r | |
516 | }\r | |
517 | \r | |
518 | // From now on we work in 32-bit words\r | |
519 | BufferSizeInWords = BufferSizeInBytes / (UINTN)4;\r | |
520 | \r | |
521 | // Write the word count, which is (buffer_size_in_words - 1),\r | |
522 | // because word count 0 means one word.\r | |
523 | SEND_NOR_COMMAND(TargetAddress, 0, (BufferSizeInWords - 1));\r | |
524 | \r | |
525 | // Write the data to the NOR Flash, advancing each address by 4 bytes\r | |
526 | for(Count=0; Count < BufferSizeInWords; Count++, Data++, Buffer++) {\r | |
527 | *Data = *Buffer;\r | |
528 | }\r | |
529 | \r | |
530 | // Issue the Buffered Program Confirm command, to start the programming operation\r | |
531 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_BUFFERED_PROGRAM_CONFIRM);\r | |
532 | \r | |
533 | // Wait for the write to complete and then check for any errors; i.e. check the Status Register\r | |
534 | do {\r | |
535 | StatusRegister = NorFlashReadStatusRegister (Instance, TargetAddress);\r | |
536 | // The chip is busy while the WRITE bit is not asserted\r | |
537 | } while ((StatusRegister & P30_SR_BIT_WRITE) != P30_SR_BIT_WRITE);\r | |
538 | \r | |
539 | \r | |
540 | // Perform a full status check:\r | |
541 | // Mask the relevant bits of Status Register.\r | |
542 | // Everything should be zero, if not, we have a problem\r | |
543 | \r | |
544 | Status = EFI_SUCCESS;\r | |
545 | \r | |
546 | if (StatusRegister & P30_SR_BIT_VPP) {\r | |
547 | DEBUG((EFI_D_ERROR,"NorFlashWriteBuffer(TargetAddress:0x%X): VPP Range Error\n", TargetAddress));\r | |
548 | Status = EFI_DEVICE_ERROR;\r | |
549 | }\r | |
550 | \r | |
551 | if (StatusRegister & P30_SR_BIT_PROGRAM) {\r | |
552 | DEBUG((EFI_D_ERROR,"NorFlashWriteBuffer(TargetAddress:0x%X): Program Error\n", TargetAddress));\r | |
553 | Status = EFI_DEVICE_ERROR;\r | |
554 | }\r | |
555 | \r | |
556 | if (StatusRegister & P30_SR_BIT_BLOCK_LOCKED) {\r | |
557 | DEBUG((EFI_D_ERROR,"NorFlashWriteBuffer(TargetAddress:0x%X): Device Protect Error\n",TargetAddress));\r | |
558 | Status = EFI_DEVICE_ERROR;\r | |
559 | }\r | |
560 | \r | |
561 | if (!EFI_ERROR(Status)) {\r | |
562 | // Clear the Status Register\r | |
563 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_CLEAR_STATUS_REGISTER);\r | |
564 | }\r | |
565 | \r | |
566 | EXIT:\r | |
567 | // Put device back into Read Array mode\r | |
568 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);\r | |
569 | \r | |
570 | return Status;\r | |
571 | }\r | |
572 | \r | |
573 | EFI_STATUS\r | |
574 | NorFlashWriteSingleBlock (\r | |
575 | IN NOR_FLASH_INSTANCE *Instance,\r | |
576 | IN EFI_LBA Lba,\r | |
577 | IN UINT32 *DataBuffer,\r | |
578 | IN UINT32 BlockSizeInWords\r | |
579 | )\r | |
580 | {\r | |
581 | EFI_STATUS Status;\r | |
582 | UINTN WordAddress;\r | |
583 | UINT32 WordIndex;\r | |
584 | UINTN BufferIndex;\r | |
585 | UINTN BlockAddress;\r | |
586 | UINTN BuffersInBlock;\r | |
587 | UINTN RemainingWords;\r | |
588 | EFI_TPL OriginalTPL;\r | |
518c243d | 589 | UINTN Cnt;\r |
1e57a462 | 590 | \r |
591 | Status = EFI_SUCCESS;\r | |
592 | \r | |
593 | // Get the physical address of the block\r | |
594 | BlockAddress = GET_NOR_BLOCK_ADDRESS (Instance->RegionBaseAddress, Lba, BlockSizeInWords * 4);\r | |
595 | \r | |
596 | // Start writing from the first address at the start of the block\r | |
597 | WordAddress = BlockAddress;\r | |
598 | \r | |
2dff0c1a OM |
599 | if (!EfiAtRuntime ()) {\r |
600 | // Raise TPL to TPL_HIGH to stop anyone from interrupting us.\r | |
601 | OriginalTPL = gBS->RaiseTPL (TPL_HIGH_LEVEL);\r | |
602 | } else {\r | |
603 | // This initialization is only to prevent the compiler to complain about the\r | |
604 | // use of uninitialized variables\r | |
605 | OriginalTPL = TPL_HIGH_LEVEL;\r | |
606 | }\r | |
1e57a462 | 607 | \r |
608 | Status = NorFlashUnlockAndEraseSingleBlock (Instance, BlockAddress);\r | |
609 | if (EFI_ERROR(Status)) {\r | |
610 | DEBUG((EFI_D_ERROR, "WriteSingleBlock: ERROR - Failed to Unlock and Erase the single block at 0x%X\n", BlockAddress));\r | |
611 | goto EXIT;\r | |
612 | }\r | |
613 | \r | |
614 | // To speed up the programming operation, NOR Flash is programmed using the Buffered Programming method.\r | |
615 | \r | |
616 | // Check that the address starts at a 32-word boundary, i.e. last 7 bits must be zero\r | |
617 | if ((WordAddress & BOUNDARY_OF_32_WORDS) == 0x00) {\r | |
618 | \r | |
619 | // First, break the entire block into buffer-sized chunks.\r | |
82745213 | 620 | BuffersInBlock = (UINTN)(BlockSizeInWords * 4) / P30_MAX_BUFFER_SIZE_IN_BYTES;\r |
1e57a462 | 621 | \r |
622 | // Then feed each buffer chunk to the NOR Flash\r | |
518c243d | 623 | // If a buffer does not contain any data, don't write it.\r |
1e57a462 | 624 | for(BufferIndex=0;\r |
625 | BufferIndex < BuffersInBlock;\r | |
626 | BufferIndex++, WordAddress += P30_MAX_BUFFER_SIZE_IN_BYTES, DataBuffer += P30_MAX_BUFFER_SIZE_IN_WORDS\r | |
627 | ) {\r | |
518c243d HL |
628 | // Check the buffer to see if it contains any data (not set all 1s).\r |
629 | for (Cnt = 0; Cnt < P30_MAX_BUFFER_SIZE_IN_WORDS; Cnt++) {\r | |
630 | if (~DataBuffer[Cnt] != 0 ) {\r | |
631 | // Some data found, write the buffer.\r | |
632 | Status = NorFlashWriteBuffer (Instance, WordAddress, P30_MAX_BUFFER_SIZE_IN_BYTES,\r | |
633 | DataBuffer);\r | |
634 | if (EFI_ERROR(Status)) {\r | |
635 | goto EXIT;\r | |
636 | }\r | |
637 | break;\r | |
638 | }\r | |
1e57a462 | 639 | }\r |
640 | }\r | |
641 | \r | |
642 | // Finally, finish off any remaining words that are less than the maximum size of the buffer\r | |
643 | RemainingWords = BlockSizeInWords % P30_MAX_BUFFER_SIZE_IN_WORDS;\r | |
644 | \r | |
645 | if(RemainingWords != 0) {\r | |
646 | Status = NorFlashWriteBuffer (Instance, WordAddress, (RemainingWords * 4), DataBuffer);\r | |
647 | if (EFI_ERROR(Status)) {\r | |
648 | goto EXIT;\r | |
649 | }\r | |
650 | }\r | |
651 | \r | |
652 | } else {\r | |
653 | // For now, use the single word programming algorithm\r | |
654 | // It is unlikely that the NOR Flash will exist in an address which falls within a 32 word boundary range,\r | |
655 | // i.e. which ends in the range 0x......01 - 0x......7F.\r | |
656 | for(WordIndex=0; WordIndex<BlockSizeInWords; WordIndex++, DataBuffer++, WordAddress = WordAddress + 4) {\r | |
657 | Status = NorFlashWriteSingleWord (Instance, WordAddress, *DataBuffer);\r | |
658 | if (EFI_ERROR(Status)) {\r | |
659 | goto EXIT;\r | |
660 | }\r | |
661 | }\r | |
662 | }\r | |
663 | \r | |
664 | EXIT:\r | |
2dff0c1a OM |
665 | if (!EfiAtRuntime ()) {\r |
666 | // Interruptions can resume.\r | |
667 | gBS->RestoreTPL (OriginalTPL);\r | |
668 | }\r | |
1e57a462 | 669 | \r |
670 | if (EFI_ERROR(Status)) {\r | |
671 | DEBUG((EFI_D_ERROR, "NOR FLASH Programming [WriteSingleBlock] failed at address 0x%08x. Exit Status = \"%r\".\n", WordAddress, Status));\r | |
672 | }\r | |
673 | return Status;\r | |
674 | }\r | |
675 | \r | |
676 | \r | |
677 | EFI_STATUS\r | |
678 | NorFlashWriteBlocks (\r | |
679 | IN NOR_FLASH_INSTANCE *Instance,\r | |
680 | IN EFI_LBA Lba,\r | |
681 | IN UINTN BufferSizeInBytes,\r | |
682 | IN VOID *Buffer\r | |
683 | )\r | |
684 | {\r | |
685 | UINT32 *pWriteBuffer;\r | |
686 | EFI_STATUS Status = EFI_SUCCESS;\r | |
687 | EFI_LBA CurrentBlock;\r | |
688 | UINT32 BlockSizeInWords;\r | |
689 | UINT32 NumBlocks;\r | |
690 | UINT32 BlockCount;\r | |
691 | \r | |
692 | // The buffer must be valid\r | |
693 | if (Buffer == NULL) {\r | |
694 | return EFI_INVALID_PARAMETER;\r | |
695 | }\r | |
696 | \r | |
697 | if(Instance->Media.ReadOnly == TRUE) {\r | |
698 | return EFI_WRITE_PROTECTED;\r | |
699 | }\r | |
700 | \r | |
701 | // We must have some bytes to read\r | |
702 | DEBUG((DEBUG_BLKIO, "NorFlashWriteBlocks: BufferSizeInBytes=0x%x\n", BufferSizeInBytes));\r | |
703 | if(BufferSizeInBytes == 0) {\r | |
704 | return EFI_BAD_BUFFER_SIZE;\r | |
705 | }\r | |
706 | \r | |
707 | // The size of the buffer must be a multiple of the block size\r | |
708 | DEBUG((DEBUG_BLKIO, "NorFlashWriteBlocks: BlockSize in bytes =0x%x\n", Instance->Media.BlockSize));\r | |
709 | if ((BufferSizeInBytes % Instance->Media.BlockSize) != 0) {\r | |
710 | return EFI_BAD_BUFFER_SIZE;\r | |
711 | }\r | |
712 | \r | |
713 | // All blocks must be within the device\r | |
714 | NumBlocks = ((UINT32)BufferSizeInBytes) / Instance->Media.BlockSize ;\r | |
715 | \r | |
716 | DEBUG((DEBUG_BLKIO, "NorFlashWriteBlocks: NumBlocks=%d, LastBlock=%ld, Lba=%ld.\n", NumBlocks, Instance->Media.LastBlock, Lba));\r | |
717 | \r | |
718 | if ((Lba + NumBlocks) > (Instance->Media.LastBlock + 1)) {\r | |
719 | DEBUG((EFI_D_ERROR, "NorFlashWriteBlocks: ERROR - Write will exceed last block.\n"));\r | |
720 | return EFI_INVALID_PARAMETER;\r | |
721 | }\r | |
722 | \r | |
723 | BlockSizeInWords = Instance->Media.BlockSize / 4;\r | |
724 | \r | |
725 | // Because the target *Buffer is a pointer to VOID, we must put all the data into a pointer\r | |
726 | // to a proper data type, so use *ReadBuffer\r | |
727 | pWriteBuffer = (UINT32 *)Buffer;\r | |
728 | \r | |
729 | CurrentBlock = Lba;\r | |
730 | for (BlockCount=0; BlockCount < NumBlocks; BlockCount++, CurrentBlock++, pWriteBuffer = pWriteBuffer + BlockSizeInWords) {\r | |
731 | \r | |
732 | DEBUG((DEBUG_BLKIO, "NorFlashWriteBlocks: Writing block #%d\n", (UINTN)CurrentBlock));\r | |
733 | \r | |
734 | Status = NorFlashWriteSingleBlock (Instance, CurrentBlock, pWriteBuffer, BlockSizeInWords);\r | |
735 | \r | |
736 | if (EFI_ERROR(Status)) {\r | |
737 | break;\r | |
738 | }\r | |
739 | }\r | |
740 | \r | |
741 | DEBUG((DEBUG_BLKIO, "NorFlashWriteBlocks: Exit Status = \"%r\".\n", Status));\r | |
742 | return Status;\r | |
743 | }\r | |
744 | \r | |
745 | EFI_STATUS\r | |
746 | NorFlashReadBlocks (\r | |
747 | IN NOR_FLASH_INSTANCE *Instance,\r | |
748 | IN EFI_LBA Lba,\r | |
749 | IN UINTN BufferSizeInBytes,\r | |
750 | OUT VOID *Buffer\r | |
751 | )\r | |
752 | {\r | |
753 | UINT32 NumBlocks;\r | |
754 | UINTN StartAddress;\r | |
755 | \r | |
3d783074 | 756 | DEBUG((DEBUG_BLKIO, "NorFlashReadBlocks: BufferSize=0x%xB BlockSize=0x%xB LastBlock=%ld, Lba=%ld.\n",\r |
757 | BufferSizeInBytes, Instance->Media.BlockSize, Instance->Media.LastBlock, Lba));\r | |
758 | \r | |
1e57a462 | 759 | // The buffer must be valid\r |
760 | if (Buffer == NULL) {\r | |
761 | return EFI_INVALID_PARAMETER;\r | |
762 | }\r | |
763 | \r | |
3d783074 | 764 | // Return if we have not any byte to read \r |
765 | if (BufferSizeInBytes == 0) {\r | |
766 | return EFI_SUCCESS;\r | |
1e57a462 | 767 | }\r |
768 | \r | |
769 | // The size of the buffer must be a multiple of the block size\r | |
1e57a462 | 770 | if ((BufferSizeInBytes % Instance->Media.BlockSize) != 0) {\r |
771 | return EFI_BAD_BUFFER_SIZE;\r | |
772 | }\r | |
773 | \r | |
774 | // All blocks must be within the device\r | |
775 | NumBlocks = ((UINT32)BufferSizeInBytes) / Instance->Media.BlockSize ;\r | |
776 | \r | |
1e57a462 | 777 | if ((Lba + NumBlocks) > (Instance->Media.LastBlock + 1)) {\r |
778 | DEBUG((EFI_D_ERROR, "NorFlashReadBlocks: ERROR - Read will exceed last block\n"));\r | |
779 | return EFI_INVALID_PARAMETER;\r | |
780 | }\r | |
781 | \r | |
782 | // Get the address to start reading from\r | |
783 | StartAddress = GET_NOR_BLOCK_ADDRESS (Instance->RegionBaseAddress,\r | |
784 | Lba,\r | |
785 | Instance->Media.BlockSize\r | |
786 | );\r | |
787 | \r | |
788 | // Put the device into Read Array mode\r | |
789 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);\r | |
790 | \r | |
791 | // Readout the data\r | |
792 | CopyMem(Buffer, (UINTN *)StartAddress, BufferSizeInBytes);\r | |
793 | \r | |
794 | return EFI_SUCCESS;\r | |
795 | }\r | |
796 | \r | |
518c243d HL |
797 | EFI_STATUS\r |
798 | NorFlashRead (\r | |
799 | IN NOR_FLASH_INSTANCE *Instance,\r | |
800 | IN EFI_LBA Lba,\r | |
801 | IN UINTN Offset,\r | |
802 | IN UINTN BufferSizeInBytes,\r | |
803 | OUT VOID *Buffer\r | |
804 | )\r | |
805 | {\r | |
806 | UINT32 NumBlocks;\r | |
807 | UINTN StartAddress;\r | |
808 | \r | |
809 | // The buffer must be valid\r | |
810 | if (Buffer == NULL) {\r | |
811 | return EFI_INVALID_PARAMETER;\r | |
812 | }\r | |
813 | \r | |
814 | // Return if we have not any byte to read\r | |
815 | if (BufferSizeInBytes == 0) {\r | |
816 | return EFI_SUCCESS;\r | |
817 | }\r | |
818 | \r | |
819 | // All blocks must be within the device\r | |
820 | NumBlocks = ((UINT32)BufferSizeInBytes) / Instance->Media.BlockSize ;\r | |
821 | \r | |
822 | if ((Lba + NumBlocks) > (Instance->Media.LastBlock + 1)) {\r | |
823 | DEBUG ((EFI_D_ERROR, "NorFlashRead: ERROR - Read will exceed last block\n"));\r | |
824 | return EFI_INVALID_PARAMETER;\r | |
825 | }\r | |
826 | \r | |
827 | if (Offset + BufferSizeInBytes >= Instance->Size) {\r | |
828 | DEBUG ((EFI_D_ERROR, "NorFlashRead: ERROR - Read will exceed device size.\n"));\r | |
829 | return EFI_INVALID_PARAMETER;\r | |
830 | }\r | |
831 | \r | |
832 | // Get the address to start reading from\r | |
833 | StartAddress = GET_NOR_BLOCK_ADDRESS (Instance->RegionBaseAddress,\r | |
834 | Lba,\r | |
835 | Instance->Media.BlockSize\r | |
836 | );\r | |
837 | \r | |
838 | // Put the device into Read Array mode\r | |
839 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);\r | |
840 | \r | |
841 | // Readout the data\r | |
842 | CopyMem (Buffer, (UINTN *)(StartAddress + Offset), BufferSizeInBytes);\r | |
843 | \r | |
844 | return EFI_SUCCESS;\r | |
845 | }\r | |
846 | \r | |
847 | \r | |
1e57a462 | 848 | EFI_STATUS\r |
849 | NorFlashReset (\r | |
850 | IN NOR_FLASH_INSTANCE *Instance\r | |
851 | )\r | |
852 | {\r | |
853 | // As there is no specific RESET to perform, ensure that the devices is in the default Read Array mode\r | |
854 | SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);\r | |
855 | return EFI_SUCCESS;\r | |
856 | }\r | |
857 | \r | |
1dbbfc17 OM |
858 | /**\r |
859 | Fixup internal data so that EFI can be call in virtual mode.\r | |
860 | Call the passed in Child Notify event and convert any pointers in\r | |
861 | lib to virtual mode.\r | |
862 | \r | |
863 | @param[in] Event The Event that is being processed\r | |
864 | @param[in] Context Event Context\r | |
865 | **/\r | |
866 | VOID\r | |
867 | EFIAPI\r | |
868 | NorFlashVirtualNotifyEvent (\r | |
869 | IN EFI_EVENT Event,\r | |
870 | IN VOID *Context\r | |
871 | )\r | |
872 | {\r | |
873 | UINTN Index;\r | |
874 | \r | |
875 | for (Index = 0; Index < mNorFlashDeviceCount; Index++) {\r | |
876 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->DeviceBaseAddress);\r | |
877 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->RegionBaseAddress);\r | |
878 | \r | |
879 | // Convert BlockIo protocol\r | |
880 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->BlockIoProtocol.FlushBlocks);\r | |
881 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->BlockIoProtocol.ReadBlocks);\r | |
882 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->BlockIoProtocol.Reset);\r | |
883 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->BlockIoProtocol.WriteBlocks);\r | |
884 | \r | |
885 | // Convert Fvb\r | |
886 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->FvbProtocol.EraseBlocks);\r | |
887 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->FvbProtocol.GetAttributes);\r | |
888 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->FvbProtocol.GetBlockSize);\r | |
889 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->FvbProtocol.GetPhysicalAddress);\r | |
890 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->FvbProtocol.Read);\r | |
891 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->FvbProtocol.SetAttributes);\r | |
892 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->FvbProtocol.Write);\r | |
893 | \r | |
894 | if (mNorFlashInstances[Index]->FvbBuffer != NULL) {\r | |
895 | EfiConvertPointer (0x0, (VOID**)&mNorFlashInstances[Index]->FvbBuffer);\r | |
896 | }\r | |
897 | }\r | |
898 | \r | |
899 | return;\r | |
900 | }\r | |
901 | \r | |
1e57a462 | 902 | EFI_STATUS\r |
903 | EFIAPI\r | |
904 | NorFlashInitialise (\r | |
905 | IN EFI_HANDLE ImageHandle,\r | |
906 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
907 | )\r | |
908 | {\r | |
909 | EFI_STATUS Status;\r | |
910 | UINT32 Index;\r | |
911 | NOR_FLASH_DESCRIPTION* NorFlashDevices;\r | |
1e57a462 | 912 | BOOLEAN ContainVariableStorage;\r |
913 | \r | |
914 | Status = NorFlashPlatformInitialization ();\r | |
915 | if (EFI_ERROR(Status)) {\r | |
916 | DEBUG((EFI_D_ERROR,"NorFlashInitialise: Fail to initialize Nor Flash devices\n"));\r | |
917 | return Status;\r | |
918 | }\r | |
919 | \r | |
1dbbfc17 | 920 | Status = NorFlashPlatformGetDevices (&NorFlashDevices, &mNorFlashDeviceCount);\r |
1e57a462 | 921 | if (EFI_ERROR(Status)) {\r |
922 | DEBUG((EFI_D_ERROR,"NorFlashInitialise: Fail to get Nor Flash devices\n"));\r | |
923 | return Status;\r | |
924 | }\r | |
925 | \r | |
1dbbfc17 | 926 | mNorFlashInstances = AllocateRuntimePool (sizeof(NOR_FLASH_INSTANCE*) * mNorFlashDeviceCount);\r |
1e57a462 | 927 | \r |
1dbbfc17 | 928 | for (Index = 0; Index < mNorFlashDeviceCount; Index++) {\r |
1e57a462 | 929 | // Check if this NOR Flash device contain the variable storage region\r |
930 | ContainVariableStorage =\r | |
931 | (NorFlashDevices[Index].RegionBaseAddress <= PcdGet32 (PcdFlashNvStorageVariableBase)) &&\r | |
932 | (PcdGet32 (PcdFlashNvStorageVariableBase) + PcdGet32 (PcdFlashNvStorageVariableSize) <= NorFlashDevices[Index].RegionBaseAddress + NorFlashDevices[Index].Size);\r | |
933 | \r | |
934 | Status = NorFlashCreateInstance (\r | |
935 | NorFlashDevices[Index].DeviceBaseAddress,\r | |
936 | NorFlashDevices[Index].RegionBaseAddress,\r | |
937 | NorFlashDevices[Index].Size,\r | |
938 | Index,\r | |
939 | NorFlashDevices[Index].BlockSize,\r | |
940 | ContainVariableStorage,\r | |
941 | &NorFlashDevices[Index].Guid,\r | |
942 | &mNorFlashInstances[Index]\r | |
943 | );\r | |
944 | if (EFI_ERROR(Status)) {\r | |
945 | DEBUG((EFI_D_ERROR,"NorFlashInitialise: Fail to create instance for NorFlash[%d]\n",Index));\r | |
946 | }\r | |
947 | }\r | |
948 | \r | |
1dbbfc17 OM |
949 | //\r |
950 | // Register for the virtual address change event\r | |
951 | //\r | |
952 | Status = gBS->CreateEventEx (\r | |
953 | EVT_NOTIFY_SIGNAL,\r | |
954 | TPL_NOTIFY,\r | |
955 | NorFlashVirtualNotifyEvent,\r | |
956 | NULL,\r | |
957 | &gEfiEventVirtualAddressChangeGuid,\r | |
958 | &mNorFlashVirtualAddrChangeEvent\r | |
959 | );\r | |
960 | ASSERT_EFI_ERROR (Status);\r | |
961 | \r | |
1e57a462 | 962 | return Status;\r |
963 | }\r |