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1 | /** @file | |
2 | MMC/SD Card driver for OMAP 35xx (SDIO not supported) | |
3 | ||
4 | This driver always produces a BlockIo protocol but it starts off with no Media | |
5 | present. A TimerCallBack detects when media is inserted or removed and after | |
6 | a media change event a call to BlockIo ReadBlocks/WriteBlocks will cause the | |
7 | media to be detected (or removed) and the BlockIo Media structure will get | |
8 | updated. No MMC/SD Card harward registers are updated until the first BlockIo | |
9 | ReadBlocks/WriteBlocks after media has been insterted (booting with a card | |
10 | plugged in counts as an insertion event). | |
11 | ||
12 | Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> | |
13 | ||
14 | This program and the accompanying materials | |
15 | are licensed and made available under the terms and conditions of the BSD License | |
16 | which accompanies this distribution. The full text of the license may be found at | |
17 | http://opensource.org/licenses/bsd-license.php | |
18 | ||
19 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
20 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
21 | ||
22 | **/ | |
23 | ||
24 | #include <Uefi.h> | |
25 | ||
26 | #include "MMCHS.h" | |
27 | ||
28 | EFI_BLOCK_IO_MEDIA gMMCHSMedia = { | |
29 | SIGNATURE_32('s','d','i','o'), // MediaId | |
30 | TRUE, // RemovableMedia | |
31 | FALSE, // MediaPresent | |
32 | FALSE, // LogicalPartition | |
33 | FALSE, // ReadOnly | |
34 | FALSE, // WriteCaching | |
35 | 512, // BlockSize | |
36 | 4, // IoAlign | |
37 | 0, // Pad | |
38 | 0 // LastBlock | |
39 | }; | |
40 | ||
41 | typedef struct { | |
42 | VENDOR_DEVICE_PATH Mmc; | |
43 | EFI_DEVICE_PATH End; | |
44 | } MMCHS_DEVICE_PATH; | |
45 | ||
46 | MMCHS_DEVICE_PATH gMmcHsDevicePath = { | |
47 | { | |
48 | HARDWARE_DEVICE_PATH, | |
49 | HW_VENDOR_DP, | |
50 | (UINT8)(sizeof(VENDOR_DEVICE_PATH)), | |
51 | (UINT8)((sizeof(VENDOR_DEVICE_PATH)) >> 8), | |
52 | 0xb615f1f5, 0x5088, 0x43cd, 0x80, 0x9c, 0xa1, 0x6e, 0x52, 0x48, 0x7d, 0x00 | |
53 | }, | |
54 | { | |
55 | END_DEVICE_PATH_TYPE, | |
56 | END_ENTIRE_DEVICE_PATH_SUBTYPE, | |
57 | sizeof (EFI_DEVICE_PATH_PROTOCOL), | |
58 | 0 | |
59 | } | |
60 | }; | |
61 | ||
62 | CARD_INFO gCardInfo; | |
63 | EMBEDDED_EXTERNAL_DEVICE *gTPS65950; | |
64 | EFI_EVENT gTimerEvent; | |
65 | BOOLEAN gMediaChange = FALSE; | |
66 | ||
67 | // | |
68 | // Internal Functions | |
69 | // | |
70 | ||
71 | ||
72 | VOID | |
73 | ParseCardCIDData ( | |
74 | UINT32 Response0, | |
75 | UINT32 Response1, | |
76 | UINT32 Response2, | |
77 | UINT32 Response3 | |
78 | ) | |
79 | { | |
80 | gCardInfo.CIDData.MDT = ((Response0 >> 8) & 0xFFF); | |
81 | gCardInfo.CIDData.PSN = (((Response0 >> 24) & 0xFF) | ((Response1 & 0xFFFFFF) << 8)); | |
82 | gCardInfo.CIDData.PRV = ((Response1 >> 24) & 0xFF); | |
83 | gCardInfo.CIDData.PNM[4] = ((Response2) & 0xFF); | |
84 | gCardInfo.CIDData.PNM[3] = ((Response2 >> 8) & 0xFF); | |
85 | gCardInfo.CIDData.PNM[2] = ((Response2 >> 16) & 0xFF); | |
86 | gCardInfo.CIDData.PNM[1] = ((Response2 >> 24) & 0xFF); | |
87 | gCardInfo.CIDData.PNM[0] = ((Response3) & 0xFF); | |
88 | gCardInfo.CIDData.OID = ((Response3 >> 8) & 0xFFFF); | |
89 | gCardInfo.CIDData.MID = ((Response3 >> 24) & 0xFF); | |
90 | } | |
91 | ||
92 | ||
93 | VOID | |
94 | UpdateMMCHSClkFrequency ( | |
95 | UINTN NewCLKD | |
96 | ) | |
97 | { | |
98 | //Set Clock enable to 0x0 to not provide the clock to the card | |
99 | MmioAnd32 (MMCHS_SYSCTL, ~CEN); | |
100 | ||
101 | //Set new clock frequency. | |
102 | MmioAndThenOr32 (MMCHS_SYSCTL, ~CLKD_MASK, NewCLKD << 6); | |
103 | ||
104 | //Poll till Internal Clock Stable | |
105 | while ((MmioRead32 (MMCHS_SYSCTL) & ICS_MASK) != ICS); | |
106 | ||
107 | //Set Clock enable to 0x1 to provide the clock to the card | |
108 | MmioOr32 (MMCHS_SYSCTL, CEN); | |
109 | } | |
110 | ||
111 | ||
112 | EFI_STATUS | |
113 | SendCmd ( | |
114 | UINTN Cmd, | |
115 | UINTN CmdInterruptEnableVal, | |
116 | UINTN CmdArgument | |
117 | ) | |
118 | { | |
119 | UINTN MmcStatus; | |
120 | UINTN RetryCount = 0; | |
121 | ||
122 | //Check if command line is in use or not. Poll till command line is available. | |
123 | while ((MmioRead32 (MMCHS_PSTATE) & DATI_MASK) == DATI_NOT_ALLOWED); | |
124 | ||
125 | //Provide the block size. | |
126 | MmioWrite32 (MMCHS_BLK, BLEN_512BYTES); | |
127 | ||
128 | //Setting Data timeout counter value to max value. | |
129 | MmioAndThenOr32 (MMCHS_SYSCTL, ~DTO_MASK, DTO_VAL); | |
130 | ||
131 | //Clear Status register. | |
132 | MmioWrite32 (MMCHS_STAT, 0xFFFFFFFF); | |
133 | ||
134 | //Set command argument register | |
135 | MmioWrite32 (MMCHS_ARG, CmdArgument); | |
136 | ||
137 | //Enable interrupt enable events to occur | |
138 | MmioWrite32 (MMCHS_IE, CmdInterruptEnableVal); | |
139 | ||
140 | //Send a command | |
141 | MmioWrite32 (MMCHS_CMD, Cmd); | |
142 | ||
143 | //Check for the command status. | |
144 | while (RetryCount < MAX_RETRY_COUNT) { | |
145 | do { | |
146 | MmcStatus = MmioRead32 (MMCHS_STAT); | |
147 | } while (MmcStatus == 0); | |
148 | ||
149 | //Read status of command response | |
150 | if ((MmcStatus & ERRI) != 0) { | |
151 | ||
152 | //Perform soft-reset for mmci_cmd line. | |
153 | MmioOr32 (MMCHS_SYSCTL, SRC); | |
154 | while ((MmioRead32 (MMCHS_SYSCTL) & SRC)); | |
155 | ||
156 | DEBUG ((EFI_D_INFO, "MmcStatus: %x\n", MmcStatus)); | |
157 | return EFI_DEVICE_ERROR; | |
158 | } | |
159 | ||
160 | //Check if command is completed. | |
161 | if ((MmcStatus & CC) == CC) { | |
162 | MmioWrite32 (MMCHS_STAT, CC); | |
163 | break; | |
164 | } | |
165 | ||
166 | RetryCount++; | |
167 | } | |
168 | ||
169 | if (RetryCount == MAX_RETRY_COUNT) { | |
170 | return EFI_TIMEOUT; | |
171 | } | |
172 | ||
173 | return EFI_SUCCESS; | |
174 | } | |
175 | ||
176 | ||
177 | VOID | |
178 | GetBlockInformation ( | |
179 | UINTN *BlockSize, | |
180 | UINTN *NumBlocks | |
181 | ) | |
182 | { | |
183 | CSD_SDV2 *CsdSDV2Data; | |
184 | UINTN CardSize; | |
185 | ||
186 | if (gCardInfo.CardType == SD_CARD_2_HIGH) { | |
187 | CsdSDV2Data = (CSD_SDV2 *)&gCardInfo.CSDData; | |
188 | ||
189 | //Populate BlockSize. | |
190 | *BlockSize = (0x1UL << CsdSDV2Data->READ_BL_LEN); | |
191 | ||
192 | //Calculate Total number of blocks. | |
193 | CardSize = CsdSDV2Data->C_SIZELow16 | (CsdSDV2Data->C_SIZEHigh6 << 2); | |
194 | *NumBlocks = ((CardSize + 1) * 1024); | |
195 | } else { | |
196 | //Populate BlockSize. | |
197 | *BlockSize = (0x1UL << gCardInfo.CSDData.READ_BL_LEN); | |
198 | ||
199 | //Calculate Total number of blocks. | |
200 | CardSize = gCardInfo.CSDData.C_SIZELow2 | (gCardInfo.CSDData.C_SIZEHigh10 << 2); | |
201 | *NumBlocks = (CardSize + 1) * (1 << (gCardInfo.CSDData.C_SIZE_MULT + 2)); | |
202 | } | |
203 | ||
204 | //For >=2G card, BlockSize may be 1K, but the transfer size is 512 bytes. | |
205 | if (*BlockSize > 512) { | |
206 | *NumBlocks = MultU64x32(*NumBlocks, *BlockSize/2); | |
207 | *BlockSize = 512; | |
208 | } | |
209 | ||
210 | DEBUG ((EFI_D_INFO, "Card type: %x, BlockSize: %x, NumBlocks: %x\n", gCardInfo.CardType, *BlockSize, *NumBlocks)); | |
211 | } | |
212 | ||
213 | ||
214 | VOID | |
215 | CalculateCardCLKD ( | |
216 | UINTN *ClockFrequencySelect | |
217 | ) | |
218 | { | |
219 | UINT8 MaxDataTransferRate; | |
220 | UINTN TransferRateValue = 0; | |
221 | UINTN TimeValue = 0 ; | |
222 | UINTN Frequency = 0; | |
223 | ||
224 | MaxDataTransferRate = gCardInfo.CSDData.TRAN_SPEED; | |
225 | ||
226 | //Calculate Transfer rate unit (Bits 2:0 of TRAN_SPEED) | |
227 | switch (MaxDataTransferRate & 0x7) { | |
228 | case 0: | |
229 | TransferRateValue = 100 * 1000; | |
230 | break; | |
231 | ||
232 | case 1: | |
233 | TransferRateValue = 1 * 1000 * 1000; | |
234 | break; | |
235 | ||
236 | case 2: | |
237 | TransferRateValue = 10 * 1000 * 1000; | |
238 | break; | |
239 | ||
240 | case 3: | |
241 | TransferRateValue = 100 * 1000 * 1000; | |
242 | break; | |
243 | ||
244 | default: | |
245 | DEBUG((EFI_D_ERROR, "Invalid parameter.\n")); | |
246 | ASSERT(FALSE); | |
247 | } | |
248 | ||
249 | //Calculate Time value (Bits 6:3 of TRAN_SPEED) | |
250 | switch ((MaxDataTransferRate >> 3) & 0xF) { | |
251 | case 1: | |
252 | TimeValue = 10; | |
253 | break; | |
254 | ||
255 | case 2: | |
256 | TimeValue = 12; | |
257 | break; | |
258 | ||
259 | case 3: | |
260 | TimeValue = 13; | |
261 | break; | |
262 | ||
263 | case 4: | |
264 | TimeValue = 15; | |
265 | break; | |
266 | ||
267 | case 5: | |
268 | TimeValue = 20; | |
269 | break; | |
270 | ||
271 | case 6: | |
272 | TimeValue = 25; | |
273 | break; | |
274 | ||
275 | case 7: | |
276 | TimeValue = 30; | |
277 | break; | |
278 | ||
279 | case 8: | |
280 | TimeValue = 35; | |
281 | break; | |
282 | ||
283 | case 9: | |
284 | TimeValue = 40; | |
285 | break; | |
286 | ||
287 | case 10: | |
288 | TimeValue = 45; | |
289 | break; | |
290 | ||
291 | case 11: | |
292 | TimeValue = 50; | |
293 | break; | |
294 | ||
295 | case 12: | |
296 | TimeValue = 55; | |
297 | break; | |
298 | ||
299 | case 13: | |
300 | TimeValue = 60; | |
301 | break; | |
302 | ||
303 | case 14: | |
304 | TimeValue = 70; | |
305 | break; | |
306 | ||
307 | case 15: | |
308 | TimeValue = 80; | |
309 | break; | |
310 | ||
311 | default: | |
312 | DEBUG((EFI_D_ERROR, "Invalid parameter.\n")); | |
313 | ASSERT(FALSE); | |
314 | } | |
315 | ||
316 | Frequency = TransferRateValue * TimeValue/10; | |
317 | ||
318 | //Calculate Clock divider value to program in MMCHS_SYSCTL[CLKD] field. | |
319 | *ClockFrequencySelect = ((MMC_REFERENCE_CLK/Frequency) + 1); | |
320 | ||
321 | DEBUG ((EFI_D_INFO, "MaxDataTransferRate: 0x%x, Frequency: %d KHz, ClockFrequencySelect: %x\n", MaxDataTransferRate, Frequency/1000, *ClockFrequencySelect)); | |
322 | } | |
323 | ||
324 | ||
325 | VOID | |
326 | GetCardConfigurationData ( | |
327 | VOID | |
328 | ) | |
329 | { | |
330 | UINTN BlockSize; | |
331 | UINTN NumBlocks; | |
332 | UINTN ClockFrequencySelect; | |
333 | ||
334 | //Calculate BlockSize and Total number of blocks in the detected card. | |
335 | GetBlockInformation(&BlockSize, &NumBlocks); | |
336 | gCardInfo.BlockSize = BlockSize; | |
337 | gCardInfo.NumBlocks = NumBlocks; | |
338 | ||
339 | //Calculate Card clock divider value. | |
340 | CalculateCardCLKD(&ClockFrequencySelect); | |
341 | gCardInfo.ClockFrequencySelect = ClockFrequencySelect; | |
342 | } | |
343 | ||
344 | ||
345 | EFI_STATUS | |
346 | InitializeMMCHS ( | |
347 | VOID | |
348 | ) | |
349 | { | |
350 | UINT8 Data = 0; | |
351 | EFI_STATUS Status; | |
352 | ||
353 | //Select Device group to belong to P1 device group in Power IC. | |
354 | Data = DEV_GRP_P1; | |
355 | Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VMMC1_DEV_GRP), 1, &Data); | |
356 | ASSERT_EFI_ERROR(Status); | |
357 | ||
358 | //Configure voltage regulator for MMC1 in Power IC to output 3.0 voltage. | |
359 | Data = VSEL_3_00V; | |
360 | Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VMMC1_DEDICATED_REG), 1, &Data); | |
361 | ASSERT_EFI_ERROR(Status); | |
362 | ||
363 | //After ramping up voltage, set VDDS stable bit to indicate that voltage level is stable. | |
364 | MmioOr32 (CONTROL_PBIAS_LITE, (PBIASLITEVMODE0 | PBIASLITEPWRDNZ0 | PBIASSPEEDCTRL0 | PBIASLITEVMODE1 | PBIASLITEWRDNZ1)); | |
365 | ||
366 | // Enable WP GPIO | |
367 | MmioAndThenOr32 (GPIO1_BASE + GPIO_OE, ~BIT23, BIT23); | |
368 | ||
369 | // Enable Card Detect | |
370 | Data = CARD_DETECT_ENABLE; | |
371 | gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID2, TPS65950_GPIO_CTRL), 1, &Data); | |
372 | ||
373 | ||
374 | return Status; | |
375 | } | |
376 | ||
377 | ||
378 | EFI_STATUS | |
379 | PerformCardIdenfication ( | |
380 | VOID | |
381 | ) | |
382 | { | |
383 | EFI_STATUS Status; | |
384 | UINTN CmdArgument = 0; | |
385 | UINTN Response = 0; | |
386 | UINTN RetryCount = 0; | |
387 | BOOLEAN SDCmd8Supported = FALSE; | |
388 | ||
389 | //Enable interrupts. | |
390 | MmioWrite32 (MMCHS_IE, (BADA_EN | CERR_EN | DEB_EN | DCRC_EN | DTO_EN | CIE_EN | | |
391 | CEB_EN | CCRC_EN | CTO_EN | BRR_EN | BWR_EN | TC_EN | CC_EN)); | |
392 | ||
393 | //Controller INIT procedure start. | |
394 | MmioOr32 (MMCHS_CON, INIT); | |
395 | MmioWrite32 (MMCHS_CMD, 0x00000000); | |
396 | while (!(MmioRead32 (MMCHS_STAT) & CC)); | |
397 | ||
398 | //Wait for 1 ms | |
399 | gBS->Stall(1000); | |
400 | ||
401 | //Set CC bit to 0x1 to clear the flag | |
402 | MmioOr32 (MMCHS_STAT, CC); | |
403 | ||
404 | //Retry INIT procedure. | |
405 | MmioWrite32 (MMCHS_CMD, 0x00000000); | |
406 | while (!(MmioRead32 (MMCHS_STAT) & CC)); | |
407 | ||
408 | //End initialization sequence | |
409 | MmioAnd32 (MMCHS_CON, ~INIT); | |
410 | ||
411 | MmioOr32 (MMCHS_HCTL, (SDVS_3_0_V | DTW_1_BIT | SDBP_ON)); | |
412 | ||
413 | //Change clock frequency to 400KHz to fit protocol | |
414 | UpdateMMCHSClkFrequency(CLKD_400KHZ); | |
415 | ||
416 | MmioOr32 (MMCHS_CON, OD); | |
417 | ||
418 | //Send CMD0 command. | |
419 | Status = SendCmd (CMD0, CMD0_INT_EN, CmdArgument); | |
420 | if (EFI_ERROR(Status)) { | |
421 | DEBUG ((EFI_D_ERROR, "Cmd0 fails.\n")); | |
422 | return Status; | |
423 | } | |
424 | ||
425 | DEBUG ((EFI_D_INFO, "CMD0 response: %x\n", MmioRead32 (MMCHS_RSP10))); | |
426 | ||
427 | //Send CMD5 command. | |
428 | Status = SendCmd (CMD5, CMD5_INT_EN, CmdArgument); | |
429 | if (Status == EFI_SUCCESS) { | |
430 | DEBUG ((EFI_D_ERROR, "CMD5 Success. SDIO card. Follow SDIO card specification.\n")); | |
431 | DEBUG ((EFI_D_INFO, "CMD5 response: %x\n", MmioRead32 (MMCHS_RSP10))); | |
432 | //NOTE: Returning unsupported error for now. Need to implement SDIO specification. | |
433 | return EFI_UNSUPPORTED; | |
434 | } else { | |
435 | DEBUG ((EFI_D_INFO, "CMD5 fails. Not an SDIO card.\n")); | |
436 | } | |
437 | ||
438 | MmioOr32 (MMCHS_SYSCTL, SRC); | |
439 | gBS->Stall(1000); | |
440 | while ((MmioRead32 (MMCHS_SYSCTL) & SRC)); | |
441 | ||
442 | //Send CMD8 command. (New v2.00 command for Voltage check) | |
443 | //Only 2.7V - 3.6V is supported for SD2.0, only SD 2.0 card can pass. | |
444 | //MMC & SD1.1 card will fail this command. | |
445 | CmdArgument = CMD8_ARG; | |
446 | Status = SendCmd (CMD8, CMD8_INT_EN, CmdArgument); | |
447 | if (Status == EFI_SUCCESS) { | |
448 | Response = MmioRead32 (MMCHS_RSP10); | |
449 | DEBUG ((EFI_D_INFO, "CMD8 success. CMD8 response: %x\n", Response)); | |
450 | if (Response != CmdArgument) { | |
451 | return EFI_DEVICE_ERROR; | |
452 | } | |
453 | DEBUG ((EFI_D_INFO, "Card is SD2.0\n")); | |
454 | SDCmd8Supported = TRUE; //Supports high capacity. | |
455 | } else { | |
456 | DEBUG ((EFI_D_INFO, "CMD8 fails. Not an SD2.0 card.\n")); | |
457 | } | |
458 | ||
459 | MmioOr32 (MMCHS_SYSCTL, SRC); | |
460 | gBS->Stall(1000); | |
461 | while ((MmioRead32 (MMCHS_SYSCTL) & SRC)); | |
462 | ||
463 | //Poll till card is busy | |
464 | while (RetryCount < MAX_RETRY_COUNT) { | |
465 | //Send CMD55 command. | |
466 | CmdArgument = 0; | |
467 | Status = SendCmd (CMD55, CMD55_INT_EN, CmdArgument); | |
468 | if (Status == EFI_SUCCESS) { | |
469 | DEBUG ((EFI_D_INFO, "CMD55 success. CMD55 response: %x\n", MmioRead32 (MMCHS_RSP10))); | |
470 | gCardInfo.CardType = SD_CARD; | |
471 | } else { | |
472 | DEBUG ((EFI_D_INFO, "CMD55 fails.\n")); | |
473 | gCardInfo.CardType = MMC_CARD; | |
474 | } | |
475 | ||
476 | //Send appropriate command for the card type which got detected. | |
477 | if (gCardInfo.CardType == SD_CARD) { | |
478 | CmdArgument = ((UINTN *) &(gCardInfo.OCRData))[0]; | |
479 | ||
480 | //Set HCS bit. | |
481 | if (SDCmd8Supported) { | |
482 | CmdArgument |= HCS; | |
483 | } | |
484 | ||
485 | Status = SendCmd (ACMD41, ACMD41_INT_EN, CmdArgument); | |
486 | if (EFI_ERROR(Status)) { | |
487 | DEBUG ((EFI_D_INFO, "ACMD41 fails.\n")); | |
488 | return Status; | |
489 | } | |
490 | ((UINT32 *) &(gCardInfo.OCRData))[0] = MmioRead32 (MMCHS_RSP10); | |
491 | DEBUG ((EFI_D_INFO, "SD card detected. ACMD41 OCR: %x\n", ((UINT32 *) &(gCardInfo.OCRData))[0])); | |
492 | } else if (gCardInfo.CardType == MMC_CARD) { | |
493 | CmdArgument = 0; | |
494 | Status = SendCmd (CMD1, CMD1_INT_EN, CmdArgument); | |
495 | if (EFI_ERROR(Status)) { | |
496 | DEBUG ((EFI_D_INFO, "CMD1 fails.\n")); | |
497 | return Status; | |
498 | } | |
499 | Response = MmioRead32 (MMCHS_RSP10); | |
500 | DEBUG ((EFI_D_INFO, "MMC card detected.. CMD1 response: %x\n", Response)); | |
501 | ||
502 | //NOTE: For now, I am skipping this since I only have an SD card. | |
503 | //Compare card OCR and host OCR (Section 22.6.1.3.2.4) | |
504 | return EFI_UNSUPPORTED; //For now, MMC is not supported. | |
505 | } | |
506 | ||
507 | //Poll the card until it is out of its power-up sequence. | |
508 | if (gCardInfo.OCRData.Busy == 1) { | |
509 | ||
510 | if (SDCmd8Supported) { | |
511 | gCardInfo.CardType = SD_CARD_2; | |
512 | } | |
513 | ||
514 | //Card is ready. Check CCS (Card capacity status) bit (bit#30). | |
515 | //SD 2.0 standard card will response with CCS 0, SD high capacity card will respond with CCS 1. | |
516 | if (gCardInfo.OCRData.AccessMode & BIT1) { | |
517 | gCardInfo.CardType = SD_CARD_2_HIGH; | |
518 | DEBUG ((EFI_D_INFO, "High capacity card.\n")); | |
519 | } else { | |
520 | DEBUG ((EFI_D_INFO, "Standard capacity card.\n")); | |
521 | } | |
522 | ||
523 | break; | |
524 | } | |
525 | ||
526 | gBS->Stall(1000); | |
527 | RetryCount++; | |
528 | } | |
529 | ||
530 | if (RetryCount == MAX_RETRY_COUNT) { | |
531 | DEBUG ((EFI_D_ERROR, "Timeout error. RetryCount: %d\n", RetryCount)); | |
532 | return EFI_TIMEOUT; | |
533 | } | |
534 | ||
535 | //Read CID data. | |
536 | CmdArgument = 0; | |
537 | Status = SendCmd (CMD2, CMD2_INT_EN, CmdArgument); | |
538 | if (EFI_ERROR(Status)) { | |
539 | DEBUG ((EFI_D_ERROR, "CMD2 fails. Status: %x\n", Status)); | |
540 | return Status; | |
541 | } | |
542 | ||
543 | DEBUG ((EFI_D_INFO, "CMD2 response: %x %x %x %x\n", MmioRead32 (MMCHS_RSP10), MmioRead32 (MMCHS_RSP32), MmioRead32 (MMCHS_RSP54), MmioRead32 (MMCHS_RSP76))); | |
544 | ||
545 | //Parse CID register data. | |
546 | ParseCardCIDData(MmioRead32 (MMCHS_RSP10), MmioRead32 (MMCHS_RSP32), MmioRead32 (MMCHS_RSP54), MmioRead32 (MMCHS_RSP76)); | |
547 | ||
548 | //Read RCA | |
549 | CmdArgument = 0; | |
550 | Status = SendCmd (CMD3, CMD3_INT_EN, CmdArgument); | |
551 | if (EFI_ERROR(Status)) { | |
552 | DEBUG ((EFI_D_ERROR, "CMD3 fails. Status: %x\n", Status)); | |
553 | return Status; | |
554 | } | |
555 | ||
556 | //Set RCA for the detected card. RCA is CMD3 response. | |
557 | gCardInfo.RCA = (MmioRead32 (MMCHS_RSP10) >> 16); | |
558 | DEBUG ((EFI_D_INFO, "CMD3 response: RCA %x\n", gCardInfo.RCA)); | |
559 | ||
560 | //MMC Bus setting change after card identification. | |
561 | MmioAnd32 (MMCHS_CON, ~OD); | |
562 | MmioOr32 (MMCHS_HCTL, SDVS_3_0_V); | |
563 | UpdateMMCHSClkFrequency(CLKD_400KHZ); //Set the clock frequency to 400KHz. | |
564 | ||
565 | return EFI_SUCCESS; | |
566 | } | |
567 | ||
568 | ||
569 | EFI_STATUS | |
570 | GetCardSpecificData ( | |
571 | VOID | |
572 | ) | |
573 | { | |
574 | EFI_STATUS Status; | |
575 | UINTN CmdArgument; | |
576 | ||
577 | //Send CMD9 to retrieve CSD. | |
578 | CmdArgument = gCardInfo.RCA << 16; | |
579 | Status = SendCmd (CMD9, CMD9_INT_EN, CmdArgument); | |
580 | if (EFI_ERROR(Status)) { | |
581 | DEBUG ((EFI_D_ERROR, "CMD9 fails. Status: %x\n", Status)); | |
582 | return Status; | |
583 | } | |
584 | ||
585 | //Populate 128-bit CSD register data. | |
586 | ((UINT32 *)&(gCardInfo.CSDData))[0] = MmioRead32 (MMCHS_RSP10); | |
587 | ((UINT32 *)&(gCardInfo.CSDData))[1] = MmioRead32 (MMCHS_RSP32); | |
588 | ((UINT32 *)&(gCardInfo.CSDData))[2] = MmioRead32 (MMCHS_RSP54); | |
589 | ((UINT32 *)&(gCardInfo.CSDData))[3] = MmioRead32 (MMCHS_RSP76); | |
590 | ||
591 | DEBUG ((EFI_D_INFO, "CMD9 response: %x %x %x %x\n", MmioRead32 (MMCHS_RSP10), MmioRead32 (MMCHS_RSP32), MmioRead32 (MMCHS_RSP54), MmioRead32 (MMCHS_RSP76))); | |
592 | ||
593 | //Calculate total number of blocks and max. data transfer rate supported by the detected card. | |
594 | GetCardConfigurationData(); | |
595 | ||
596 | //Change MMCHS clock frequency to what detected card can support. | |
597 | UpdateMMCHSClkFrequency(gCardInfo.ClockFrequencySelect); | |
598 | ||
599 | return Status; | |
600 | } | |
601 | ||
602 | ||
603 | EFI_STATUS | |
604 | PerformCardConfiguration ( | |
605 | VOID | |
606 | ) | |
607 | { | |
608 | UINTN CmdArgument = 0; | |
609 | EFI_STATUS Status; | |
610 | ||
611 | //Send CMD7 | |
612 | CmdArgument = gCardInfo.RCA << 16; | |
613 | Status = SendCmd (CMD7, CMD7_INT_EN, CmdArgument); | |
614 | if (EFI_ERROR(Status)) { | |
615 | DEBUG ((EFI_D_ERROR, "CMD7 fails. Status: %x\n", Status)); | |
616 | return Status; | |
617 | } | |
618 | ||
619 | if ((gCardInfo.CardType != UNKNOWN_CARD) && (gCardInfo.CardType != MMC_CARD)) { | |
620 | // We could read SCR register, but SD Card Phys spec stats any SD Card shall | |
621 | // set SCR.SD_BUS_WIDTHS to support 4-bit mode, so why bother? | |
622 | ||
623 | // Send ACMD6 (application specific commands must be prefixed with CMD55) | |
624 | Status = SendCmd (CMD55, CMD55_INT_EN, CmdArgument); | |
625 | if (!EFI_ERROR (Status)) { | |
626 | // set device into 4-bit data bus mode | |
627 | Status = SendCmd (ACMD6, ACMD6_INT_EN, 0x2); | |
628 | if (!EFI_ERROR (Status)) { | |
629 | // Set host controler into 4-bit mode | |
630 | MmioOr32 (MMCHS_HCTL, DTW_4_BIT); | |
631 | DEBUG ((EFI_D_INFO, "SD Memory Card set to 4-bit mode\n")); | |
632 | } | |
633 | } | |
634 | } | |
635 | ||
636 | //Send CMD16 to set the block length | |
637 | CmdArgument = gCardInfo.BlockSize; | |
638 | Status = SendCmd (CMD16, CMD16_INT_EN, CmdArgument); | |
639 | if (EFI_ERROR(Status)) { | |
640 | DEBUG ((EFI_D_ERROR, "CMD16 fails. Status: %x\n", Status)); | |
641 | return Status; | |
642 | } | |
643 | ||
644 | return EFI_SUCCESS; | |
645 | } | |
646 | ||
647 | ||
648 | EFI_STATUS | |
649 | ReadBlockData ( | |
650 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
651 | OUT VOID *Buffer | |
652 | ) | |
653 | { | |
654 | UINTN MmcStatus; | |
655 | UINTN *DataBuffer = Buffer; | |
656 | UINTN DataSize = This->Media->BlockSize/4; | |
657 | UINTN Count; | |
658 | UINTN RetryCount = 0; | |
659 | ||
660 | //Check controller status to make sure there is no error. | |
661 | while (RetryCount < MAX_RETRY_COUNT) { | |
662 | do { | |
663 | //Read Status. | |
664 | MmcStatus = MmioRead32 (MMCHS_STAT); | |
665 | } while(MmcStatus == 0); | |
666 | ||
667 | //Check if Buffer read ready (BRR) bit is set? | |
668 | if (MmcStatus & BRR) { | |
669 | ||
670 | //Clear BRR bit | |
671 | MmioOr32 (MMCHS_STAT, BRR); | |
672 | ||
673 | //Read block worth of data. | |
674 | for (Count = 0; Count < DataSize; Count++) { | |
675 | *DataBuffer++ = MmioRead32 (MMCHS_DATA); | |
676 | } | |
677 | break; | |
678 | } | |
679 | RetryCount++; | |
680 | } | |
681 | ||
682 | if (RetryCount == MAX_RETRY_COUNT) { | |
683 | return EFI_TIMEOUT; | |
684 | } | |
685 | ||
686 | return EFI_SUCCESS; | |
687 | } | |
688 | ||
689 | ||
690 | EFI_STATUS | |
691 | WriteBlockData ( | |
692 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
693 | OUT VOID *Buffer | |
694 | ) | |
695 | { | |
696 | UINTN MmcStatus; | |
697 | UINTN *DataBuffer = Buffer; | |
698 | UINTN DataSize = This->Media->BlockSize/4; | |
699 | UINTN Count; | |
700 | UINTN RetryCount = 0; | |
701 | ||
702 | //Check controller status to make sure there is no error. | |
703 | while (RetryCount < MAX_RETRY_COUNT) { | |
704 | do { | |
705 | //Read Status. | |
706 | MmcStatus = MmioRead32 (MMCHS_STAT); | |
707 | } while(MmcStatus == 0); | |
708 | ||
709 | //Check if Buffer write ready (BWR) bit is set? | |
710 | if (MmcStatus & BWR) { | |
711 | ||
712 | //Clear BWR bit | |
713 | MmioOr32 (MMCHS_STAT, BWR); | |
714 | ||
715 | //Write block worth of data. | |
716 | for (Count = 0; Count < DataSize; Count++) { | |
717 | MmioWrite32 (MMCHS_DATA, *DataBuffer++); | |
718 | } | |
719 | ||
720 | break; | |
721 | } | |
722 | RetryCount++; | |
723 | } | |
724 | ||
725 | if (RetryCount == MAX_RETRY_COUNT) { | |
726 | return EFI_TIMEOUT; | |
727 | } | |
728 | ||
729 | return EFI_SUCCESS; | |
730 | } | |
731 | ||
732 | ||
733 | EFI_STATUS | |
734 | TransferBlockData ( | |
735 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
736 | OUT VOID *Buffer, | |
737 | IN OPERATION_TYPE OperationType | |
738 | ) | |
739 | { | |
740 | EFI_STATUS Status; | |
741 | UINTN MmcStatus; | |
742 | UINTN RetryCount = 0; | |
743 | ||
744 | //Read or Write data. | |
745 | if (OperationType == READ) { | |
746 | Status = ReadBlockData(This, Buffer); | |
747 | if (EFI_ERROR(Status)) { | |
748 | DEBUG((EFI_D_ERROR, "ReadBlockData fails.\n")); | |
749 | return Status; | |
750 | } | |
751 | } else if (OperationType == WRITE) { | |
752 | Status = WriteBlockData(This, Buffer); | |
753 | if (EFI_ERROR(Status)) { | |
754 | DEBUG((EFI_D_ERROR, "WriteBlockData fails.\n")); | |
755 | return Status; | |
756 | } | |
757 | } | |
758 | ||
759 | //Check for the Transfer completion. | |
760 | while (RetryCount < MAX_RETRY_COUNT) { | |
761 | //Read Status | |
762 | do { | |
763 | MmcStatus = MmioRead32 (MMCHS_STAT); | |
764 | } while (MmcStatus == 0); | |
765 | ||
766 | //Check if Transfer complete (TC) bit is set? | |
767 | if (MmcStatus & TC) { | |
768 | break; | |
769 | } else { | |
770 | DEBUG ((EFI_D_ERROR, "MmcStatus for TC: %x\n", MmcStatus)); | |
771 | //Check if DEB, DCRC or DTO interrupt occured. | |
772 | if ((MmcStatus & DEB) | (MmcStatus & DCRC) | (MmcStatus & DTO)) { | |
773 | //There was an error during the data transfer. | |
774 | ||
775 | //Set SRD bit to 1 and wait until it return to 0x0. | |
776 | MmioOr32 (MMCHS_SYSCTL, SRD); | |
777 | while((MmioRead32 (MMCHS_SYSCTL) & SRD) != 0x0); | |
778 | ||
779 | return EFI_DEVICE_ERROR; | |
780 | } | |
781 | } | |
782 | RetryCount++; | |
783 | } | |
784 | ||
785 | if (RetryCount == MAX_RETRY_COUNT) { | |
786 | DEBUG ((EFI_D_ERROR, "TransferBlockData timed out.\n")); | |
787 | return EFI_TIMEOUT; | |
788 | } | |
789 | ||
790 | return EFI_SUCCESS; | |
791 | } | |
792 | ||
793 | BOOLEAN | |
794 | CardPresent ( | |
795 | VOID | |
796 | ) | |
797 | { | |
798 | EFI_STATUS Status; | |
799 | UINT8 Data; | |
800 | ||
801 | // | |
802 | // Card detect is a GPIO0 on the TPS65950 | |
803 | // | |
804 | Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID2, GPIODATAIN1), 1, &Data); | |
805 | if (EFI_ERROR (Status)) { | |
806 | return FALSE; | |
807 | } | |
808 | ||
809 | if ((Data & CARD_DETECT_BIT) == CARD_DETECT_BIT) { | |
810 | // No Card present | |
811 | return FALSE; | |
812 | } else { | |
813 | return TRUE; | |
814 | } | |
815 | } | |
816 | ||
817 | EFI_STATUS | |
818 | DetectCard ( | |
819 | VOID | |
820 | ) | |
821 | { | |
822 | EFI_STATUS Status; | |
823 | ||
824 | if (!CardPresent ()) { | |
825 | return EFI_NO_MEDIA; | |
826 | } | |
827 | ||
828 | //Initialize MMC host controller clocks. | |
829 | Status = InitializeMMCHS (); | |
830 | if (EFI_ERROR(Status)) { | |
831 | DEBUG ((EFI_D_ERROR, "Initialize MMC host controller fails. Status: %x\n", Status)); | |
832 | return Status; | |
833 | } | |
834 | ||
835 | //Software reset of the MMCHS host controller. | |
836 | MmioWrite32 (MMCHS_SYSCONFIG, SOFTRESET); | |
837 | gBS->Stall(1000); | |
838 | while ((MmioRead32 (MMCHS_SYSSTATUS) & RESETDONE_MASK) != RESETDONE); | |
839 | ||
840 | //Soft reset for all. | |
841 | MmioWrite32 (MMCHS_SYSCTL, SRA); | |
842 | gBS->Stall(1000); | |
843 | while ((MmioRead32 (MMCHS_SYSCTL) & SRA) != 0x0); | |
844 | ||
845 | //Voltage capabilities initialization. Activate VS18 and VS30. | |
846 | MmioOr32 (MMCHS_CAPA, (VS30 | VS18)); | |
847 | ||
848 | //Wakeup configuration | |
849 | MmioOr32 (MMCHS_SYSCONFIG, ENAWAKEUP); | |
850 | MmioOr32 (MMCHS_HCTL, IWE); | |
851 | ||
852 | //MMCHS Controller default initialization | |
853 | MmioOr32 (MMCHS_CON, (OD | DW8_1_4_BIT | CEATA_OFF)); | |
854 | ||
855 | MmioWrite32 (MMCHS_HCTL, (SDVS_3_0_V | DTW_1_BIT | SDBP_OFF)); | |
856 | ||
857 | //Enable internal clock | |
858 | MmioOr32 (MMCHS_SYSCTL, ICE); | |
859 | ||
860 | //Set the clock frequency to 80KHz. | |
861 | UpdateMMCHSClkFrequency (CLKD_80KHZ); | |
862 | ||
863 | //Enable SD bus power. | |
864 | MmioOr32 (MMCHS_HCTL, (SDBP_ON)); | |
865 | ||
866 | //Poll till SD bus power bit is set. | |
867 | while ((MmioRead32 (MMCHS_HCTL) & SDBP_MASK) != SDBP_ON); | |
868 | ||
869 | //Card idenfication | |
870 | Status = PerformCardIdenfication (); | |
871 | if (EFI_ERROR(Status)) { | |
872 | DEBUG ((EFI_D_ERROR, "No MMC/SD card detected.\n")); | |
873 | return Status; | |
874 | } | |
875 | ||
876 | //Get CSD (Card specific data) for the detected card. | |
877 | Status = GetCardSpecificData(); | |
878 | if (EFI_ERROR(Status)) { | |
879 | return Status; | |
880 | } | |
881 | ||
882 | //Configure the card in data transfer mode. | |
883 | Status = PerformCardConfiguration(); | |
884 | if (EFI_ERROR(Status)) { | |
885 | return Status; | |
886 | } | |
887 | ||
888 | //Patch the Media structure. | |
889 | gMMCHSMedia.LastBlock = (gCardInfo.NumBlocks - 1); | |
890 | gMMCHSMedia.BlockSize = gCardInfo.BlockSize; | |
891 | gMMCHSMedia.ReadOnly = (MmioRead32 (GPIO1_BASE + GPIO_DATAIN) & BIT23) == BIT23; | |
892 | gMMCHSMedia.MediaPresent = TRUE; | |
893 | gMMCHSMedia.MediaId++; | |
894 | gMediaChange = FALSE; | |
895 | ||
896 | DEBUG ((EFI_D_INFO, "SD Card Media Change\n")); | |
897 | ||
898 | return Status; | |
899 | } | |
900 | ||
901 | ||
902 | EFI_STATUS | |
903 | SdReadWrite ( | |
904 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
905 | IN UINTN Lba, | |
906 | OUT VOID *Buffer, | |
907 | IN UINTN BufferSize, | |
908 | IN OPERATION_TYPE OperationType | |
909 | ) | |
910 | { | |
911 | EFI_STATUS Status = EFI_SUCCESS; | |
912 | UINTN RetryCount = 0; | |
913 | UINTN NumBlocks; | |
914 | UINTN Cmd = 0; | |
915 | UINTN CmdInterruptEnable = 0; | |
916 | UINTN CmdArgument = 0; | |
917 | EFI_TPL OldTpl;\r | |
918 | BOOLEAN MediaPresentLastTime;\r | |
919 | BOOLEAN Update;\r | |
920 | ||
921 | OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
922 | ||
923 | ||
924 | if (Buffer == NULL) { | |
925 | Status = EFI_INVALID_PARAMETER; | |
926 | goto Done; | |
927 | } | |
928 | ||
929 | Update = FALSE; | |
930 | MediaPresentLastTime = gMMCHSMedia.MediaPresent; | |
931 | ||
932 | if (gMediaChange) { | |
933 | Status = DetectCard (); | |
934 | if (EFI_ERROR (Status)) { | |
935 | // We detected a removal | |
936 | gMMCHSMedia.MediaPresent = FALSE; | |
937 | gMMCHSMedia.LastBlock = 0; | |
938 | gMMCHSMedia.BlockSize = 512; // Should be zero but there is a bug in DiskIo | |
939 | gMMCHSMedia.ReadOnly = FALSE; | |
940 | } else { | |
941 | Update = TRUE; | |
942 | } | |
943 | gMediaChange = FALSE; | |
944 | } else if (!gMMCHSMedia.MediaPresent) { | |
945 | Status = EFI_NO_MEDIA; | |
946 | goto Done; | |
947 | } | |
948 | ||
949 | if ((MediaPresentLastTime != gMMCHSMedia.MediaPresent) || Update) { | |
950 | gBS->ReinstallProtocolInterface (\r | |
951 | gImageHandle,\r | |
952 | &gEfiBlockIoProtocolGuid,\r | |
953 | &gBlockIo,\r | |
954 | &gBlockIo\r | |
955 | );\r | |
956 | } | |
957 | ||
958 | if (EFI_ERROR (Status)) { | |
959 | goto Done; | |
960 | } | |
961 | ||
962 | if (Lba > This->Media->LastBlock) { | |
963 | Status = EFI_INVALID_PARAMETER; | |
964 | goto Done; | |
965 | } | |
966 | ||
967 | if ((BufferSize % This->Media->BlockSize) != 0) { | |
968 | Status = EFI_BAD_BUFFER_SIZE; | |
969 | goto Done; | |
970 | } | |
971 | ||
972 | //Check if the data lines are not in use. | |
973 | while ((RetryCount++ < MAX_RETRY_COUNT) && ((MmioRead32 (MMCHS_PSTATE) & DATI_MASK) != DATI_ALLOWED)); | |
974 | if (RetryCount == MAX_RETRY_COUNT) { | |
975 | Status = EFI_TIMEOUT; | |
976 | goto Done; | |
977 | } | |
978 | ||
979 | //Populate the command information based on the operation type. | |
980 | if (OperationType == READ) { | |
981 | Cmd = CMD17; //Single block read | |
982 | CmdInterruptEnable = CMD17_INT_EN; | |
983 | } else if (OperationType == WRITE) { | |
984 | Cmd = CMD24; //Single block write | |
985 | CmdInterruptEnable = CMD24_INT_EN; | |
986 | } | |
987 | ||
988 | //Calculate total number of blocks its going to read. | |
989 | NumBlocks = (BufferSize + (This->Media->BlockSize - 1))/This->Media->BlockSize; | |
990 | ||
991 | //Set command argument based on the card access mode (Byte mode or Block mode) | |
992 | if (gCardInfo.OCRData.AccessMode & BIT1) { | |
993 | CmdArgument = (UINTN)Lba; | |
994 | } else { | |
995 | CmdArgument = (UINTN)Lba * This->Media->BlockSize; | |
996 | } | |
997 | ||
998 | while(NumBlocks) { | |
999 | //Send Command. | |
1000 | Status = SendCmd (Cmd, CmdInterruptEnable, CmdArgument); | |
1001 | if (EFI_ERROR(Status)) { | |
1002 | DEBUG ((EFI_D_ERROR, "CMD fails. Status: %x\n", Status)); | |
1003 | goto Done; | |
1004 | } | |
1005 | ||
1006 | //Transfer a block worth of data. | |
1007 | Status = TransferBlockData(This, Buffer, OperationType); | |
1008 | if (EFI_ERROR(Status)) { | |
1009 | DEBUG ((EFI_D_ERROR, "TransferBlockData fails. %x\n", Status)); | |
1010 | goto Done; | |
1011 | } | |
1012 | ||
1013 | //Adjust command argument. | |
1014 | if (gCardInfo.OCRData.AccessMode & BIT1) { | |
1015 | CmdArgument++; //Increase BlockIndex by one. | |
1016 | } else { | |
1017 | CmdArgument += This->Media->BlockSize; //Increase BlockIndex by BlockSize | |
1018 | } | |
1019 | ||
1020 | //Adjust Buffer. | |
1021 | Buffer = (UINT8 *)Buffer + This->Media->BlockSize; | |
1022 | NumBlocks--; | |
1023 | } | |
1024 | ||
1025 | Done:\r | |
1026 | gBS->RestoreTPL (OldTpl);\r | |
1027 | return Status;\r | |
1028 | } | |
1029 | ||
1030 | ||
1031 | /**\r | |
1032 | Reset the Block Device.\r | |
1033 | \r | |
1034 | @param This Indicates a pointer to the calling context.\r | |
1035 | @param ExtendedVerification Driver may perform diagnostics on reset.\r | |
1036 | \r | |
1037 | @retval EFI_SUCCESS The device was reset.\r | |
1038 | @retval EFI_DEVICE_ERROR The device is not functioning properly and could\r | |
1039 | not be reset.\r | |
1040 | \r | |
1041 | **/ | |
1042 | EFI_STATUS | |
1043 | EFIAPI | |
1044 | MMCHSReset ( | |
1045 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
1046 | IN BOOLEAN ExtendedVerification | |
1047 | ) | |
1048 | { | |
1049 | return EFI_SUCCESS; | |
1050 | } | |
1051 | ||
1052 | ||
1053 | /**\r | |
1054 | Read BufferSize bytes from Lba into Buffer.\r | |
1055 | \r | |
1056 | @param This Indicates a pointer to the calling context.\r | |
1057 | @param MediaId Id of the media, changes every time the media is replaced.\r | |
1058 | @param Lba The starting Logical Block Address to read from\r | |
1059 | @param BufferSize Size of Buffer, must be a multiple of device block size.\r | |
1060 | @param Buffer A pointer to the destination buffer for the data. The caller is\r | |
1061 | responsible for either having implicit or explicit ownership of the buffer.\r | |
1062 | \r | |
1063 | @retval EFI_SUCCESS The data was read correctly from the device.\r | |
1064 | @retval EFI_DEVICE_ERROR The device reported an error while performing the read.\r | |
1065 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
1066 | @retval EFI_MEDIA_CHANGED The MediaId does not matched the current device.\r | |
1067 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r | |
1068 | @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid, \r | |
1069 | or the buffer is not on proper alignment.\r | |
1070 | EFI_STATUS | |
1071 | ||
1072 | **/ | |
1073 | EFI_STATUS | |
1074 | EFIAPI | |
1075 | MMCHSReadBlocks ( | |
1076 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
1077 | IN UINT32 MediaId, | |
1078 | IN EFI_LBA Lba, | |
1079 | IN UINTN BufferSize, | |
1080 | OUT VOID *Buffer | |
1081 | ) | |
1082 | { | |
1083 | EFI_STATUS Status; | |
1084 | ||
1085 | //Perform Read operation. | |
1086 | Status = SdReadWrite (This, (UINTN)Lba, Buffer, BufferSize, READ); | |
1087 | ||
1088 | return Status;\r | |
1089 | } | |
1090 | ||
1091 | ||
1092 | /**\r | |
1093 | Write BufferSize bytes from Lba into Buffer.\r | |
1094 | \r | |
1095 | @param This Indicates a pointer to the calling context.\r | |
1096 | @param MediaId The media ID that the write request is for.\r | |
1097 | @param Lba The starting logical block address to be written. The caller is\r | |
1098 | responsible for writing to only legitimate locations.\r | |
1099 | @param BufferSize Size of Buffer, must be a multiple of device block size.\r | |
1100 | @param Buffer A pointer to the source buffer for the data.\r | |
1101 | \r | |
1102 | @retval EFI_SUCCESS The data was written correctly to the device.\r | |
1103 | @retval EFI_WRITE_PROTECTED The device can not be written to.\r | |
1104 | @retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r | |
1105 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
1106 | @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r | |
1107 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r | |
1108 | @retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid, \r | |
1109 | or the buffer is not on proper alignment.\r | |
1110 | \r | |
1111 | **/ | |
1112 | EFI_STATUS | |
1113 | EFIAPI | |
1114 | MMCHSWriteBlocks ( | |
1115 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
1116 | IN UINT32 MediaId, | |
1117 | IN EFI_LBA Lba, | |
1118 | IN UINTN BufferSize, | |
1119 | IN VOID *Buffer | |
1120 | ) | |
1121 | { | |
1122 | EFI_STATUS Status; | |
1123 | ||
1124 | //Perform write operation. | |
1125 | Status = SdReadWrite (This, (UINTN)Lba, Buffer, BufferSize, WRITE); | |
1126 | \r | |
1127 | return Status;\r | |
1128 | } | |
1129 | ||
1130 | ||
1131 | /**\r | |
1132 | Flush the Block Device.\r | |
1133 | \r | |
1134 | @param This Indicates a pointer to the calling context.\r | |
1135 | \r | |
1136 | @retval EFI_SUCCESS All outstanding data was written to the device\r | |
1137 | @retval EFI_DEVICE_ERROR The device reported an error while writting back the data\r | |
1138 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
1139 | \r | |
1140 | **/ | |
1141 | EFI_STATUS | |
1142 | EFIAPI | |
1143 | MMCHSFlushBlocks ( | |
1144 | IN EFI_BLOCK_IO_PROTOCOL *This | |
1145 | ) | |
1146 | { | |
1147 | return EFI_SUCCESS; | |
1148 | } | |
1149 | ||
1150 | ||
1151 | EFI_BLOCK_IO_PROTOCOL gBlockIo = { | |
1152 | EFI_BLOCK_IO_INTERFACE_REVISION, // Revision | |
1153 | &gMMCHSMedia, // *Media | |
1154 | MMCHSReset, // Reset | |
1155 | MMCHSReadBlocks, // ReadBlocks | |
1156 | MMCHSWriteBlocks, // WriteBlocks | |
1157 | MMCHSFlushBlocks // FlushBlocks | |
1158 | }; | |
1159 | ||
1160 | ||
1161 | /**\r | |
1162 | Timer callback to convert card present hardware into a boolean that indicates\r | |
1163 | a media change event has happened. If you just check the GPIO you could see \r | |
1164 | card 1 and then check again after card 1 was removed and card 2 was inserted\r | |
1165 | and you would still see media present. Thus you need the timer tick to catch\r | |
1166 | the toggle event.\r | |
1167 | \r | |
1168 | @param Event Event whose notification function is being invoked.\r | |
1169 | @param Context The pointer to the notification function's context,\r | |
1170 | which is implementation-dependent. Not used.\r | |
1171 | \r | |
1172 | **/ | |
1173 | VOID | |
1174 | EFIAPI | |
1175 | TimerCallback ( | |
1176 | IN EFI_EVENT Event, | |
1177 | IN VOID *Context | |
1178 | ) | |
1179 | { | |
1180 | BOOLEAN Present; | |
1181 | ||
1182 | Present = CardPresent (); | |
1183 | if (gMMCHSMedia.MediaPresent) { | |
1184 | if (!Present && !gMediaChange) { | |
1185 | gMediaChange = TRUE; | |
1186 | } | |
1187 | } else { | |
1188 | if (Present && !gMediaChange) { | |
1189 | gMediaChange = TRUE; | |
1190 | } | |
1191 | } | |
1192 | } | |
1193 | ||
1194 | ||
1195 | EFI_STATUS | |
1196 | EFIAPI | |
1197 | MMCHSInitialize ( | |
1198 | IN EFI_HANDLE ImageHandle, | |
1199 | IN EFI_SYSTEM_TABLE *SystemTable | |
1200 | ) | |
1201 | { | |
1202 | EFI_STATUS Status; | |
1203 | ||
1204 | Status = gBS->LocateProtocol (&gEmbeddedExternalDeviceProtocolGuid, NULL, (VOID **)&gTPS65950); | |
1205 | ASSERT_EFI_ERROR(Status); | |
1206 | ||
1207 | ZeroMem (&gCardInfo, sizeof (CARD_INFO)); | |
1208 | ||
1209 | Status = gBS->CreateEvent (EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_CALLBACK, TimerCallback, NULL, &gTimerEvent); | |
1210 | ASSERT_EFI_ERROR (Status); | |
1211 | ||
1212 | Status = gBS->SetTimer (gTimerEvent, TimerPeriodic, 1000000ULL); // make me a PCD | |
1213 | ASSERT_EFI_ERROR (Status); | |
1214 | ||
1215 | //Publish BlockIO. | |
1216 | Status = gBS->InstallMultipleProtocolInterfaces ( | |
1217 | &ImageHandle, | |
1218 | &gEfiBlockIoProtocolGuid, &gBlockIo, | |
1219 | &gEfiDevicePathProtocolGuid, &gMmcHsDevicePath, | |
1220 | NULL | |
1221 | ); | |
1222 | return Status; | |
1223 | } |