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1 | /** @file |
2 | ||
3 | Copyright (c) 2008-2009, Apple Inc. All rights reserved. | |
4 | ||
5 | All rights reserved. This program and the accompanying materials | |
6 | are licensed and made available under the terms and conditions of the BSD License | |
7 | which accompanies this distribution. The full text of the license may be found at | |
8 | http://opensource.org/licenses/bsd-license.php | |
9 | ||
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
12 | ||
13 | **/ | |
14 | ||
15 | #include <Uefi.h> | |
16 | ||
17 | #include "MMCHS.h" | |
18 | ||
19 | EFI_BLOCK_IO_MEDIA MMCHSMedia = { | |
6f72e28d | 20 | SIGNATURE_32('s','d','i','o'), // MediaId |
21 | TRUE, // RemovableMedia | |
2ef2b01e | 22 | TRUE, // MediaPresent |
6f72e28d | 23 | FALSE, // LogicalPartition |
2ef2b01e A |
24 | FALSE, // ReadOnly |
25 | FALSE, // WriteCaching | |
26 | 512, // BlockSize | |
27 | 4, // IoAlign | |
28 | 0, // Pad | |
29 | 0 // LastBlock | |
30 | }; | |
31 | ||
32 | typedef struct { | |
33 | VENDOR_DEVICE_PATH Mmc; | |
34 | EFI_DEVICE_PATH End; | |
35 | } MMCHS_DEVICE_PATH; | |
36 | ||
37 | MMCHS_DEVICE_PATH gMmcHsDevicePath = | |
38 | { | |
39 | { | |
40 | HARDWARE_DEVICE_PATH, | |
41 | HW_VENDOR_DP, | |
42 | (UINT8)(sizeof(VENDOR_DEVICE_PATH)), | |
43 | (UINT8)((sizeof(VENDOR_DEVICE_PATH)) >> 8), | |
44 | 0xb615f1f5, 0x5088, 0x43cd, 0x80, 0x9c, 0xa1, 0x6e, 0x52, 0x48, 0x7d, 0x00 | |
45 | }, | |
46 | { | |
47 | END_DEVICE_PATH_TYPE, | |
48 | END_ENTIRE_DEVICE_PATH_SUBTYPE, | |
49 | sizeof (EFI_DEVICE_PATH_PROTOCOL), | |
50 | 0 | |
51 | } | |
52 | }; | |
53 | ||
54 | CARD_INFO *gCardInfo; | |
6f72e28d | 55 | EMBEDDED_EXTERNAL_DEVICE *gTPS65950; |
2ef2b01e A |
56 | |
57 | // | |
58 | // Internal Functions | |
59 | // | |
60 | ||
61 | STATIC | |
62 | VOID | |
63 | ParseCardCIDData ( | |
64 | UINT32 Response0, | |
65 | UINT32 Response1, | |
66 | UINT32 Response2, | |
67 | UINT32 Response3 | |
68 | ) | |
69 | { | |
70 | gCardInfo->CIDData.MDT = ((Response0 >> 8) & 0xFFF); | |
71 | gCardInfo->CIDData.PSN = (((Response0 >> 24) & 0xFF) | ((Response1 & 0xFFFFFF) << 8)); | |
72 | gCardInfo->CIDData.PRV = ((Response1 >> 24) & 0xFF); | |
73 | gCardInfo->CIDData.PNM[4] = ((Response2) & 0xFF); | |
74 | gCardInfo->CIDData.PNM[3] = ((Response2 >> 8) & 0xFF); | |
75 | gCardInfo->CIDData.PNM[2] = ((Response2 >> 16) & 0xFF); | |
76 | gCardInfo->CIDData.PNM[1] = ((Response2 >> 24) & 0xFF); | |
77 | gCardInfo->CIDData.PNM[0] = ((Response3) & 0xFF); | |
78 | gCardInfo->CIDData.OID = ((Response3 >> 8) & 0xFFFF); | |
79 | gCardInfo->CIDData.MID = ((Response3 >> 24) & 0xFF); | |
80 | } | |
81 | ||
82 | STATIC | |
83 | VOID | |
84 | UpdateMMCHSClkFrequency ( | |
85 | UINTN NewCLKD | |
86 | ) | |
87 | { | |
88 | //Set Clock enable to 0x0 to not provide the clock to the card | |
89 | MmioAnd32(MMCHS_SYSCTL, ~CEN); | |
90 | ||
91 | //Set new clock frequency. | |
92 | MmioAndThenOr32(MMCHS_SYSCTL, ~CLKD_MASK, NewCLKD << 6); | |
93 | ||
94 | //Poll till Internal Clock Stable | |
95 | while ((MmioRead32(MMCHS_SYSCTL) & ICS_MASK) != ICS); | |
96 | ||
97 | //Set Clock enable to 0x1 to provide the clock to the card | |
98 | MmioOr32(MMCHS_SYSCTL, CEN); | |
99 | } | |
100 | ||
101 | STATIC | |
102 | EFI_STATUS | |
103 | SendCmd ( | |
104 | UINTN Cmd, | |
105 | UINTN CmdInterruptEnableVal, | |
106 | UINTN CmdArgument | |
107 | ) | |
108 | { | |
109 | UINTN MmcStatus; | |
110 | UINTN RetryCount = 0; | |
111 | ||
112 | //Check if command line is in use or not. Poll till command line is available. | |
113 | while ((MmioRead32(MMCHS_PSTATE) & DATI_MASK) == DATI_NOT_ALLOWED); | |
114 | ||
115 | //Provide the block size. | |
116 | MmioWrite32(MMCHS_BLK, BLEN_512BYTES); | |
117 | ||
118 | //Setting Data timeout counter value to max value. | |
119 | MmioAndThenOr32(MMCHS_SYSCTL, ~DTO_MASK, DTO_VAL); | |
120 | ||
121 | //Clear Status register. | |
122 | MmioWrite32(MMCHS_STAT, 0xFFFFFFFF); | |
123 | ||
124 | //Set command argument register | |
125 | MmioWrite32(MMCHS_ARG, CmdArgument); | |
126 | ||
127 | //Enable interrupt enable events to occur | |
128 | MmioWrite32(MMCHS_IE, CmdInterruptEnableVal); | |
129 | ||
130 | //Send a command | |
131 | MmioWrite32(MMCHS_CMD, Cmd); | |
132 | ||
133 | //Check for the command status. | |
134 | while (RetryCount < MAX_RETRY_COUNT) { | |
135 | do { | |
136 | MmcStatus = MmioRead32(MMCHS_STAT); | |
137 | } while (MmcStatus == 0); | |
138 | ||
139 | //Read status of command response | |
140 | if ((MmcStatus & ERRI) != 0) { | |
141 | ||
142 | //Perform soft-reset for mmci_cmd line. | |
143 | MmioOr32(MMCHS_SYSCTL, SRC); | |
144 | while ((MmioRead32(MMCHS_SYSCTL) & SRC)); | |
145 | ||
146 | DEBUG ((EFI_D_INFO, "MmcStatus: %x\n", MmcStatus)); | |
147 | return EFI_DEVICE_ERROR; | |
148 | } | |
149 | ||
150 | //Check if command is completed. | |
151 | if ((MmcStatus & CC) == CC) { | |
152 | MmioWrite32(MMCHS_STAT, CC); | |
153 | break; | |
154 | } | |
155 | ||
156 | RetryCount++; | |
157 | } | |
158 | ||
159 | if (RetryCount == MAX_RETRY_COUNT) { | |
160 | return EFI_TIMEOUT; | |
161 | } | |
162 | ||
163 | return EFI_SUCCESS; | |
164 | } | |
165 | ||
166 | STATIC | |
167 | VOID | |
168 | GetBlockInformation ( | |
169 | UINTN *BlockSize, | |
170 | UINTN *NumBlocks | |
171 | ) | |
172 | { | |
173 | CSD_SDV2 *CsdSDV2Data; | |
174 | UINTN CardSize; | |
175 | ||
176 | if (gCardInfo->CardType == SD_CARD_2_HIGH) { | |
177 | CsdSDV2Data = (CSD_SDV2 *)&gCardInfo->CSDData; | |
178 | ||
179 | //Populate BlockSize. | |
180 | *BlockSize = (0x1UL << CsdSDV2Data->READ_BL_LEN); | |
181 | ||
182 | //Calculate Total number of blocks. | |
183 | CardSize = CsdSDV2Data->C_SIZELow16 | (CsdSDV2Data->C_SIZEHigh6 << 2); | |
184 | *NumBlocks = ((CardSize + 1) * 1024); | |
185 | } else { | |
186 | //Populate BlockSize. | |
187 | *BlockSize = (0x1UL << gCardInfo->CSDData.READ_BL_LEN); | |
188 | ||
189 | //Calculate Total number of blocks. | |
190 | CardSize = gCardInfo->CSDData.C_SIZELow2 | (gCardInfo->CSDData.C_SIZEHigh10 << 2); | |
191 | *NumBlocks = (CardSize + 1) * (1 << (gCardInfo->CSDData.C_SIZE_MULT + 2)); | |
192 | } | |
193 | ||
194 | //For >=2G card, BlockSize may be 1K, but the transfer size is 512 bytes. | |
195 | if (*BlockSize > 512) { | |
196 | *NumBlocks = MultU64x32(*NumBlocks, *BlockSize/2); | |
197 | *BlockSize = 512; | |
198 | } | |
199 | ||
200 | DEBUG ((EFI_D_INFO, "Card type: %x, BlockSize: %x, NumBlocks: %x\n", gCardInfo->CardType, *BlockSize, *NumBlocks)); | |
201 | } | |
202 | ||
203 | STATIC | |
204 | VOID | |
205 | CalculateCardCLKD ( | |
206 | UINTN *ClockFrequencySelect | |
207 | ) | |
208 | { | |
209 | UINT8 MaxDataTransferRate; | |
210 | UINTN TransferRateValue = 0; | |
211 | UINTN TimeValue = 0 ; | |
212 | UINTN Frequency = 0; | |
213 | ||
214 | MaxDataTransferRate = gCardInfo->CSDData.TRAN_SPEED; | |
215 | ||
216 | //Calculate Transfer rate unit (Bits 2:0 of TRAN_SPEED) | |
217 | switch (MaxDataTransferRate & 0x7) { | |
218 | case 0: | |
219 | TransferRateValue = 100 * 1000; | |
220 | break; | |
221 | ||
222 | case 1: | |
223 | TransferRateValue = 1 * 1000 * 1000; | |
224 | break; | |
225 | ||
226 | case 2: | |
227 | TransferRateValue = 10 * 1000 * 1000; | |
228 | break; | |
229 | ||
230 | case 3: | |
231 | TransferRateValue = 100 * 1000 * 1000; | |
232 | break; | |
233 | ||
234 | default: | |
235 | DEBUG((EFI_D_ERROR, "Invalid parameter.\n")); | |
236 | ASSERT(FALSE); | |
237 | } | |
238 | ||
239 | //Calculate Time value (Bits 6:3 of TRAN_SPEED) | |
240 | switch ((MaxDataTransferRate >> 3) & 0xF) { | |
241 | case 1: | |
242 | TimeValue = 10; | |
243 | break; | |
244 | ||
245 | case 2: | |
246 | TimeValue = 12; | |
247 | break; | |
248 | ||
249 | case 3: | |
250 | TimeValue = 13; | |
251 | break; | |
252 | ||
253 | case 4: | |
254 | TimeValue = 15; | |
255 | break; | |
256 | ||
257 | case 5: | |
258 | TimeValue = 20; | |
259 | break; | |
260 | ||
261 | case 6: | |
262 | TimeValue = 25; | |
263 | break; | |
264 | ||
265 | case 7: | |
266 | TimeValue = 30; | |
267 | break; | |
268 | ||
269 | case 8: | |
270 | TimeValue = 35; | |
271 | break; | |
272 | ||
273 | case 9: | |
274 | TimeValue = 40; | |
275 | break; | |
276 | ||
277 | case 10: | |
278 | TimeValue = 45; | |
279 | break; | |
280 | ||
281 | case 11: | |
282 | TimeValue = 50; | |
283 | break; | |
284 | ||
285 | case 12: | |
286 | TimeValue = 55; | |
287 | break; | |
288 | ||
289 | case 13: | |
290 | TimeValue = 60; | |
291 | break; | |
292 | ||
293 | case 14: | |
294 | TimeValue = 70; | |
295 | break; | |
296 | ||
297 | case 15: | |
298 | TimeValue = 80; | |
299 | break; | |
300 | ||
301 | default: | |
302 | DEBUG((EFI_D_ERROR, "Invalid parameter.\n")); | |
303 | ASSERT(FALSE); | |
304 | } | |
305 | ||
306 | Frequency = TransferRateValue * TimeValue/10; | |
307 | ||
308 | //Calculate Clock divider value to program in MMCHS_SYSCTL[CLKD] field. | |
309 | *ClockFrequencySelect = ((MMC_REFERENCE_CLK/Frequency) + 1); | |
310 | ||
311 | DEBUG ((EFI_D_INFO, "MaxDataTransferRate: 0x%x, Frequency: %d KHz, ClockFrequencySelect: %x\n", MaxDataTransferRate, Frequency/1000, *ClockFrequencySelect)); | |
312 | } | |
313 | ||
314 | STATIC | |
315 | VOID | |
316 | GetCardConfigurationData ( | |
317 | VOID | |
318 | ) | |
319 | { | |
320 | UINTN BlockSize; | |
321 | UINTN NumBlocks; | |
322 | UINTN ClockFrequencySelect; | |
323 | ||
324 | //Calculate BlockSize and Total number of blocks in the detected card. | |
325 | GetBlockInformation(&BlockSize, &NumBlocks); | |
326 | gCardInfo->BlockSize = BlockSize; | |
327 | gCardInfo->NumBlocks = NumBlocks; | |
328 | ||
329 | //Calculate Card clock divider value. | |
330 | CalculateCardCLKD(&ClockFrequencySelect); | |
331 | gCardInfo->ClockFrequencySelect = ClockFrequencySelect; | |
332 | } | |
333 | ||
334 | STATIC | |
335 | EFI_STATUS | |
336 | InitializeMMCHS ( | |
337 | VOID | |
338 | ) | |
339 | { | |
340 | UINT8 Data = 0; | |
341 | EFI_STATUS Status; | |
342 | ||
343 | //Select Device group to belong to P1 device group in Power IC. | |
344 | Data = DEV_GRP_P1; | |
345 | Status = gTPS65950->Write(gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VMMC1_DEV_GRP), 1, &Data); | |
346 | ASSERT_EFI_ERROR(Status); | |
347 | ||
348 | //Configure voltage regulator for MMC1 in Power IC to output 3.0 voltage. | |
349 | Data = VSEL_3_00V; | |
350 | Status = gTPS65950->Write(gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VMMC1_DEDICATED_REG), 1, &Data); | |
351 | ASSERT_EFI_ERROR(Status); | |
352 | ||
353 | //After ramping up voltage, set VDDS stable bit to indicate that voltage level is stable. | |
354 | MmioOr32(CONTROL_PBIAS_LITE, (PBIASLITEVMODE0 | PBIASLITEPWRDNZ0 | PBIASSPEEDCTRL0 | PBIASLITEVMODE1 | PBIASLITEWRDNZ1)); | |
355 | ||
356 | //Software reset of the MMCHS host controller. | |
357 | MmioWrite32(MMCHS_SYSCONFIG, SOFTRESET); | |
358 | gBS->Stall(1000); | |
359 | while ((MmioRead32(MMCHS_SYSSTATUS) & RESETDONE_MASK) != RESETDONE); | |
360 | ||
361 | //Soft reset for all. | |
362 | MmioWrite32(MMCHS_SYSCTL, SRA); | |
363 | gBS->Stall(1000); | |
364 | while ((MmioRead32(MMCHS_SYSCTL) & SRA) != 0x0); | |
365 | ||
366 | //Voltage capabilities initialization. Activate VS18 and VS30. | |
367 | MmioOr32(MMCHS_CAPA, (VS30 | VS18)); | |
368 | ||
369 | //Wakeup configuration | |
370 | MmioOr32(MMCHS_SYSCONFIG, ENAWAKEUP); | |
371 | MmioOr32(MMCHS_HCTL, IWE); | |
372 | ||
373 | //MMCHS Controller default initialization | |
374 | MmioOr32(MMCHS_CON, (OD | DW8_1_4_BIT | CEATA_OFF)); | |
375 | ||
376 | MmioWrite32(MMCHS_HCTL, (SDVS_3_0_V | DTW_1_BIT | SDBP_OFF)); | |
377 | ||
378 | //Enable internal clock | |
379 | MmioOr32(MMCHS_SYSCTL, ICE); | |
380 | ||
381 | //Set the clock frequency to 80KHz. | |
382 | UpdateMMCHSClkFrequency(CLKD_80KHZ); | |
383 | ||
384 | //Enable SD bus power. | |
385 | MmioOr32(MMCHS_HCTL, (SDBP_ON)); | |
386 | ||
387 | //Poll till SD bus power bit is set. | |
388 | while ((MmioRead32(MMCHS_HCTL) & SDBP_MASK) != SDBP_ON); | |
389 | ||
390 | return Status; | |
391 | } | |
392 | ||
393 | STATIC | |
394 | EFI_STATUS | |
395 | PerformCardIdenfication ( | |
396 | VOID | |
397 | ) | |
398 | { | |
399 | EFI_STATUS Status; | |
400 | UINTN CmdArgument = 0; | |
401 | UINTN Response = 0; | |
402 | UINTN RetryCount = 0; | |
403 | BOOLEAN SDCmd8Supported = FALSE; | |
404 | ||
405 | //Enable interrupts. | |
406 | MmioWrite32(MMCHS_IE, (BADA_EN | CERR_EN | DEB_EN | DCRC_EN | DTO_EN | CIE_EN | | |
407 | CEB_EN | CCRC_EN | CTO_EN | BRR_EN | BWR_EN | TC_EN | CC_EN)); | |
408 | ||
409 | //Controller INIT procedure start. | |
410 | MmioOr32(MMCHS_CON, INIT); | |
411 | MmioWrite32(MMCHS_CMD, 0x00000000); | |
412 | while (!(MmioRead32(MMCHS_STAT) & CC)); | |
413 | ||
414 | //Wait for 1 ms | |
415 | gBS->Stall(1000); | |
416 | ||
417 | //Set CC bit to 0x1 to clear the flag | |
418 | MmioOr32(MMCHS_STAT, CC); | |
419 | ||
420 | //Retry INIT procedure. | |
421 | MmioWrite32(MMCHS_CMD, 0x00000000); | |
422 | while (!(MmioRead32(MMCHS_STAT) & CC)); | |
423 | ||
424 | //End initialization sequence | |
425 | MmioAnd32(MMCHS_CON, ~INIT); | |
426 | ||
427 | MmioOr32(MMCHS_HCTL, (SDVS_3_0_V | DTW_1_BIT | SDBP_ON)); | |
428 | ||
429 | //Change clock frequency to 400KHz to fit protocol | |
430 | UpdateMMCHSClkFrequency(CLKD_400KHZ); | |
431 | ||
432 | MmioOr32(MMCHS_CON, OD); | |
433 | ||
434 | //Send CMD0 command. | |
435 | Status = SendCmd(CMD0, CMD0_INT_EN, CmdArgument); | |
436 | if (EFI_ERROR(Status)) { | |
437 | DEBUG ((EFI_D_ERROR, "Cmd0 fails.\n")); | |
438 | return Status; | |
439 | } | |
440 | ||
441 | DEBUG ((EFI_D_INFO, "CMD0 response: %x\n", MmioRead32(MMCHS_RSP10))); | |
442 | ||
443 | //Send CMD5 command. | |
444 | Status = SendCmd(CMD5, CMD5_INT_EN, CmdArgument); | |
445 | if (Status == EFI_SUCCESS) { | |
446 | DEBUG ((EFI_D_ERROR, "CMD5 Success. SDIO card. Follow SDIO card specification.\n")); | |
447 | DEBUG ((EFI_D_INFO, "CMD5 response: %x\n", MmioRead32(MMCHS_RSP10))); | |
448 | //NOTE: Returning unsupported error for now. Need to implement SDIO specification. | |
449 | return EFI_UNSUPPORTED; | |
450 | } else { | |
451 | DEBUG ((EFI_D_INFO, "CMD5 fails. Not an SDIO card.\n")); | |
452 | } | |
453 | ||
454 | MmioOr32(MMCHS_SYSCTL, SRC); | |
455 | gBS->Stall(1000); | |
456 | while ((MmioRead32(MMCHS_SYSCTL) & SRC)); | |
457 | ||
458 | //Send CMD8 command. (New v2.00 command for Voltage check) | |
459 | //Only 2.7V - 3.6V is supported for SD2.0, only SD 2.0 card can pass. | |
460 | //MMC & SD1.1 card will fail this command. | |
461 | CmdArgument = CMD8_ARG; | |
462 | Status = SendCmd(CMD8, CMD8_INT_EN, CmdArgument); | |
463 | if (Status == EFI_SUCCESS) { | |
464 | Response = MmioRead32(MMCHS_RSP10); | |
465 | DEBUG ((EFI_D_INFO, "CMD8 success. CMD8 response: %x\n", Response)); | |
466 | if (Response != CmdArgument) { | |
467 | return EFI_DEVICE_ERROR; | |
468 | } | |
469 | DEBUG ((EFI_D_INFO, "Card is SD2.0\n")); | |
470 | SDCmd8Supported = TRUE; //Supports high capacity. | |
471 | } else { | |
472 | DEBUG ((EFI_D_INFO, "CMD8 fails. Not an SD2.0 card.\n")); | |
473 | } | |
474 | ||
475 | MmioOr32(MMCHS_SYSCTL, SRC); | |
476 | gBS->Stall(1000); | |
477 | while ((MmioRead32(MMCHS_SYSCTL) & SRC)); | |
478 | ||
479 | //Poll till card is busy | |
480 | while (RetryCount < MAX_RETRY_COUNT) { | |
481 | //Send CMD55 command. | |
482 | CmdArgument = 0; | |
483 | Status = SendCmd(CMD55, CMD55_INT_EN, CmdArgument); | |
484 | if (Status == EFI_SUCCESS) { | |
485 | DEBUG ((EFI_D_INFO, "CMD55 success. CMD55 response: %x\n", MmioRead32(MMCHS_RSP10))); | |
486 | gCardInfo->CardType = SD_CARD; | |
487 | } else { | |
488 | DEBUG ((EFI_D_INFO, "CMD55 fails.\n")); | |
489 | gCardInfo->CardType = MMC_CARD; | |
490 | } | |
491 | ||
492 | //Send appropriate command for the card type which got detected. | |
493 | if (gCardInfo->CardType == SD_CARD) { | |
494 | CmdArgument = ((UINTN *) &(gCardInfo->OCRData))[0]; | |
495 | ||
496 | //Set HCS bit. | |
497 | if (SDCmd8Supported) { | |
498 | CmdArgument |= HCS; | |
499 | } | |
500 | ||
501 | Status = SendCmd(ACMD41, ACMD41_INT_EN, CmdArgument); | |
502 | if (EFI_ERROR(Status)) { | |
503 | DEBUG ((EFI_D_INFO, "ACMD41 fails.\n")); | |
504 | return Status; | |
505 | } | |
506 | ((UINT32 *) &(gCardInfo->OCRData))[0] = MmioRead32(MMCHS_RSP10); | |
507 | DEBUG ((EFI_D_INFO, "SD card detected. ACMD41 OCR: %x\n", ((UINT32 *) &(gCardInfo->OCRData))[0])); | |
508 | } else if (gCardInfo->CardType == MMC_CARD) { | |
509 | CmdArgument = 0; | |
510 | Status = SendCmd(CMD1, CMD1_INT_EN, CmdArgument); | |
511 | if (EFI_ERROR(Status)) { | |
512 | DEBUG ((EFI_D_INFO, "CMD1 fails.\n")); | |
513 | return Status; | |
514 | } | |
515 | Response = MmioRead32(MMCHS_RSP10); | |
516 | DEBUG ((EFI_D_INFO, "MMC card detected.. CMD1 response: %x\n", Response)); | |
517 | ||
518 | //NOTE: For now, I am skipping this since I only have an SD card. | |
519 | //Compare card OCR and host OCR (Section 22.6.1.3.2.4) | |
520 | return EFI_UNSUPPORTED; //For now, MMC is not supported. | |
521 | } | |
522 | ||
523 | //Poll the card until it is out of its power-up sequence. | |
524 | if (gCardInfo->OCRData.Busy == 1) { | |
525 | ||
526 | if (SDCmd8Supported) { | |
527 | gCardInfo->CardType = SD_CARD_2; | |
528 | } | |
529 | ||
530 | //Card is ready. Check CCS (Card capacity status) bit (bit#30). | |
531 | //SD 2.0 standard card will response with CCS 0, SD high capacity card will respond with CCS 1. | |
532 | if (gCardInfo->OCRData.AccessMode & BIT1) { | |
533 | gCardInfo->CardType = SD_CARD_2_HIGH; | |
534 | DEBUG ((EFI_D_INFO, "High capacity card.\n")); | |
535 | } else { | |
536 | DEBUG ((EFI_D_INFO, "Standard capacity card.\n")); | |
537 | } | |
538 | ||
539 | break; | |
540 | } | |
541 | ||
542 | gBS->Stall(1000); | |
543 | RetryCount++; | |
544 | } | |
545 | ||
546 | if (RetryCount == MAX_RETRY_COUNT) { | |
547 | DEBUG ((EFI_D_ERROR, "Timeout error. RetryCount: %d\n", RetryCount)); | |
548 | return EFI_TIMEOUT; | |
549 | } | |
550 | ||
551 | //Read CID data. | |
552 | CmdArgument = 0; | |
553 | Status = SendCmd(CMD2, CMD2_INT_EN, CmdArgument); | |
554 | if (EFI_ERROR(Status)) { | |
555 | DEBUG ((EFI_D_ERROR, "CMD2 fails. Status: %x\n", Status)); | |
556 | return Status; | |
557 | } | |
558 | ||
559 | DEBUG ((EFI_D_INFO, "CMD2 response: %x %x %x %x\n", MmioRead32(MMCHS_RSP10), MmioRead32(MMCHS_RSP32), MmioRead32(MMCHS_RSP54), MmioRead32(MMCHS_RSP76))); | |
560 | ||
561 | //Parse CID register data. | |
562 | ParseCardCIDData(MmioRead32(MMCHS_RSP10), MmioRead32(MMCHS_RSP32), MmioRead32(MMCHS_RSP54), MmioRead32(MMCHS_RSP76)); | |
563 | ||
564 | //Read RCA | |
565 | CmdArgument = 0; | |
566 | Status = SendCmd(CMD3, CMD3_INT_EN, CmdArgument); | |
567 | if (EFI_ERROR(Status)) { | |
568 | DEBUG ((EFI_D_ERROR, "CMD3 fails. Status: %x\n", Status)); | |
569 | return Status; | |
570 | } | |
571 | ||
572 | //Set RCA for the detected card. RCA is CMD3 response. | |
573 | gCardInfo->RCA = (MmioRead32(MMCHS_RSP10) >> 16); | |
574 | DEBUG ((EFI_D_INFO, "CMD3 response: RCA %x\n", gCardInfo->RCA)); | |
575 | ||
576 | //MMC Bus setting change after card identification. | |
577 | MmioAnd32(MMCHS_CON, ~OD); | |
578 | MmioOr32(MMCHS_HCTL, SDVS_3_0_V); | |
579 | UpdateMMCHSClkFrequency(CLKD_400KHZ); //Set the clock frequency to 400KHz. | |
580 | ||
581 | return EFI_SUCCESS; | |
582 | } | |
583 | ||
584 | STATIC | |
585 | EFI_STATUS | |
586 | GetCardSpecificData ( | |
587 | VOID | |
588 | ) | |
589 | { | |
590 | EFI_STATUS Status; | |
591 | UINTN CmdArgument; | |
592 | ||
593 | //Send CMD9 to retrieve CSD. | |
594 | CmdArgument = gCardInfo->RCA << 16; | |
595 | Status = SendCmd(CMD9, CMD9_INT_EN, CmdArgument); | |
596 | if (EFI_ERROR(Status)) { | |
597 | DEBUG ((EFI_D_ERROR, "CMD9 fails. Status: %x\n", Status)); | |
598 | return Status; | |
599 | } | |
600 | ||
601 | //Populate 128-bit CSD register data. | |
602 | ((UINT32 *)&(gCardInfo->CSDData))[0] = MmioRead32(MMCHS_RSP10); | |
603 | ((UINT32 *)&(gCardInfo->CSDData))[1] = MmioRead32(MMCHS_RSP32); | |
604 | ((UINT32 *)&(gCardInfo->CSDData))[2] = MmioRead32(MMCHS_RSP54); | |
605 | ((UINT32 *)&(gCardInfo->CSDData))[3] = MmioRead32(MMCHS_RSP76); | |
606 | ||
607 | DEBUG ((EFI_D_INFO, "CMD9 response: %x %x %x %x\n", MmioRead32(MMCHS_RSP10), MmioRead32(MMCHS_RSP32), MmioRead32(MMCHS_RSP54), MmioRead32(MMCHS_RSP76))); | |
608 | ||
609 | //Calculate total number of blocks and max. data transfer rate supported by the detected card. | |
610 | GetCardConfigurationData(); | |
611 | ||
612 | //Change MMCHS clock frequency to what detected card can support. | |
613 | UpdateMMCHSClkFrequency(gCardInfo->ClockFrequencySelect); | |
614 | ||
615 | return Status; | |
616 | } | |
617 | ||
618 | STATIC | |
619 | EFI_STATUS | |
620 | PerformCardConfiguration ( | |
621 | VOID | |
622 | ) | |
623 | { | |
624 | UINTN CmdArgument = 0; | |
625 | EFI_STATUS Status; | |
626 | ||
627 | //Send CMD7 | |
628 | CmdArgument = gCardInfo->RCA << 16; | |
629 | Status = SendCmd(CMD7, CMD7_INT_EN, CmdArgument); | |
630 | if (EFI_ERROR(Status)) { | |
631 | DEBUG ((EFI_D_ERROR, "CMD7 fails. Status: %x\n", Status)); | |
632 | return Status; | |
633 | } | |
634 | ||
635 | //Send CMD16 to set the block length | |
636 | CmdArgument = gCardInfo->BlockSize; | |
637 | Status = SendCmd(CMD16, CMD16_INT_EN, CmdArgument); | |
638 | if (EFI_ERROR(Status)) { | |
639 | DEBUG ((EFI_D_ERROR, "CMD16 fails. Status: %x\n", Status)); | |
640 | return Status; | |
641 | } | |
642 | ||
643 | return EFI_SUCCESS; | |
644 | } | |
645 | ||
646 | STATIC | |
647 | EFI_STATUS | |
648 | ReadBlockData( | |
649 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
650 | OUT VOID *Buffer | |
651 | ) | |
652 | { | |
653 | UINTN MmcStatus; | |
654 | UINTN *DataBuffer = Buffer; | |
655 | UINTN DataSize = This->Media->BlockSize/4; | |
656 | UINTN Count; | |
657 | UINTN RetryCount = 0; | |
658 | ||
659 | //Check controller status to make sure there is no error. | |
660 | while (RetryCount < MAX_RETRY_COUNT) { | |
661 | do { | |
662 | //Read Status. | |
663 | MmcStatus = MmioRead32(MMCHS_STAT); | |
664 | } while(MmcStatus == 0); | |
665 | ||
666 | //Check if Buffer read ready (BRR) bit is set? | |
667 | if (MmcStatus & BRR) { | |
668 | ||
669 | //Clear BRR bit | |
670 | MmioOr32(MMCHS_STAT, BRR); | |
671 | ||
672 | //Read block worth of data. | |
673 | for (Count = 0; Count < DataSize; Count++) { | |
674 | *DataBuffer++ = MmioRead32(MMCHS_DATA); | |
675 | } | |
676 | break; | |
677 | } | |
678 | RetryCount++; | |
679 | } | |
680 | ||
681 | if (RetryCount == MAX_RETRY_COUNT) { | |
682 | return EFI_TIMEOUT; | |
683 | } | |
684 | ||
685 | return EFI_SUCCESS; | |
686 | } | |
687 | ||
688 | STATIC | |
689 | EFI_STATUS | |
690 | WriteBlockData( | |
691 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
692 | OUT VOID *Buffer | |
693 | ) | |
694 | { | |
695 | UINTN MmcStatus; | |
696 | UINTN *DataBuffer = Buffer; | |
697 | UINTN DataSize = This->Media->BlockSize/4; | |
698 | UINTN Count; | |
699 | UINTN RetryCount = 0; | |
700 | ||
701 | //Check controller status to make sure there is no error. | |
702 | while (RetryCount < MAX_RETRY_COUNT) { | |
703 | do { | |
704 | //Read Status. | |
705 | MmcStatus = MmioRead32(MMCHS_STAT); | |
706 | } while(MmcStatus == 0); | |
707 | ||
708 | //Check if Buffer write ready (BWR) bit is set? | |
709 | if (MmcStatus & BWR) { | |
710 | ||
711 | //Clear BWR bit | |
712 | MmioOr32(MMCHS_STAT, BWR); | |
713 | ||
714 | //Write block worth of data. | |
715 | for (Count = 0; Count < DataSize; Count++) { | |
716 | MmioWrite32(MMCHS_DATA, *DataBuffer++); | |
717 | } | |
718 | ||
719 | break; | |
720 | } | |
721 | RetryCount++; | |
722 | } | |
723 | ||
724 | if (RetryCount == MAX_RETRY_COUNT) { | |
725 | return EFI_TIMEOUT; | |
726 | } | |
727 | ||
728 | return EFI_SUCCESS; | |
729 | } | |
730 | ||
731 | STATIC | |
732 | EFI_STATUS | |
733 | TransferBlockData( | |
734 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
735 | OUT VOID *Buffer, | |
736 | IN OPERATION_TYPE OperationType | |
737 | ) | |
738 | { | |
739 | EFI_STATUS Status; | |
740 | UINTN MmcStatus; | |
741 | UINTN RetryCount = 0; | |
742 | ||
743 | //Read or Write data. | |
744 | if (OperationType == READ) { | |
745 | Status = ReadBlockData(This, Buffer); | |
746 | if (EFI_ERROR(Status)) { | |
747 | DEBUG((EFI_D_ERROR, "ReadBlockData fails.\n")); | |
748 | return Status; | |
749 | } | |
750 | } else if (OperationType == WRITE) { | |
751 | Status = WriteBlockData(This, Buffer); | |
752 | if (EFI_ERROR(Status)) { | |
753 | DEBUG((EFI_D_ERROR, "WriteBlockData fails.\n")); | |
754 | return Status; | |
755 | } | |
756 | } | |
757 | ||
758 | //Check for the Transfer completion. | |
759 | while (RetryCount < MAX_RETRY_COUNT) { | |
760 | //Read Status | |
761 | do { | |
762 | MmcStatus = MmioRead32(MMCHS_STAT); | |
763 | } while (MmcStatus == 0); | |
764 | ||
765 | //Check if Transfer complete (TC) bit is set? | |
766 | if (MmcStatus & TC) { | |
767 | break; | |
768 | } else { | |
769 | DEBUG ((EFI_D_ERROR, "MmcStatus for TC: %x\n", MmcStatus)); | |
770 | //Check if DEB, DCRC or DTO interrupt occured. | |
771 | if ((MmcStatus & DEB) | (MmcStatus & DCRC) | (MmcStatus & DTO)) { | |
772 | //There was an error during the data transfer. | |
773 | ||
774 | //Set SRD bit to 1 and wait until it return to 0x0. | |
775 | MmioOr32(MMCHS_SYSCTL, SRD); | |
776 | while((MmioRead32(MMCHS_SYSCTL) & SRD) != 0x0); | |
777 | ||
778 | return EFI_DEVICE_ERROR; | |
779 | } | |
780 | } | |
781 | RetryCount++; | |
782 | } | |
783 | ||
784 | if (RetryCount == MAX_RETRY_COUNT) { | |
785 | DEBUG ((EFI_D_ERROR, "TransferBlockData timed out.\n")); | |
786 | return EFI_TIMEOUT; | |
787 | } | |
788 | ||
789 | return EFI_SUCCESS; | |
790 | } | |
791 | ||
792 | STATIC | |
793 | EFI_STATUS | |
794 | SdReadWrite ( | |
795 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
796 | IN UINTN Lba, | |
797 | OUT VOID *Buffer, | |
798 | IN UINTN BufferSize, | |
799 | IN OPERATION_TYPE OperationType | |
800 | ) | |
801 | { | |
802 | EFI_STATUS Status; | |
803 | UINTN RetryCount = 0; | |
804 | UINTN NumBlocks; | |
805 | UINTN Cmd = 0; | |
806 | UINTN CmdInterruptEnable = 0; | |
807 | UINTN CmdArgument = 0; | |
808 | ||
809 | //Check if the data lines are not in use. | |
810 | while ((RetryCount++ < MAX_RETRY_COUNT) && ((MmioRead32(MMCHS_PSTATE) & DATI_MASK) != DATI_ALLOWED)); | |
811 | if (RetryCount == MAX_RETRY_COUNT) { | |
812 | return EFI_TIMEOUT; | |
813 | } | |
814 | ||
815 | //Populate the command information based on the operation type. | |
816 | if (OperationType == READ) { | |
817 | Cmd = CMD17; //Single block read | |
818 | CmdInterruptEnable = CMD17_INT_EN; | |
819 | } else if (OperationType == WRITE) { | |
820 | Cmd = CMD24; //Single block write | |
821 | CmdInterruptEnable = CMD24_INT_EN; | |
822 | } | |
823 | ||
824 | //Calculate total number of blocks its going to read. | |
825 | NumBlocks = (BufferSize + (This->Media->BlockSize - 1))/This->Media->BlockSize; | |
826 | ||
827 | //Set command argument based on the card access mode (Byte mode or Block mode) | |
828 | if (gCardInfo->OCRData.AccessMode & BIT1) { | |
829 | CmdArgument = (UINTN)Lba; | |
830 | } else { | |
831 | CmdArgument = (UINTN)Lba * This->Media->BlockSize; | |
832 | } | |
833 | ||
834 | while(NumBlocks) { | |
835 | //Send Command. | |
836 | Status = SendCmd(Cmd, CmdInterruptEnable, CmdArgument); | |
837 | if (EFI_ERROR(Status)) { | |
838 | DEBUG ((EFI_D_ERROR, "CMD fails. Status: %x\n", Status)); | |
839 | return Status; | |
840 | } | |
841 | ||
842 | //Transfer a block worth of data. | |
843 | Status = TransferBlockData(This, Buffer, OperationType); | |
844 | if (EFI_ERROR(Status)) { | |
845 | DEBUG ((EFI_D_ERROR, "TransferBlockData fails. %x\n", Status)); | |
846 | return Status; | |
847 | } | |
848 | ||
849 | //Adjust command argument. | |
850 | if (gCardInfo->OCRData.AccessMode & BIT1) { | |
851 | CmdArgument++; //Increase BlockIndex by one. | |
852 | } else { | |
853 | CmdArgument += This->Media->BlockSize; //Increase BlockIndex by BlockSize | |
854 | } | |
855 | ||
856 | //Adjust Buffer. | |
857 | Buffer = (UINT8 *)Buffer + This->Media->BlockSize; | |
858 | NumBlocks--; | |
859 | } | |
860 | ||
861 | return EFI_SUCCESS; | |
862 | } | |
863 | ||
864 | EFI_STATUS | |
865 | EFIAPI | |
866 | MMCHSReset ( | |
867 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
868 | IN BOOLEAN ExtendedVerification | |
869 | ) | |
870 | { | |
871 | return EFI_SUCCESS; | |
872 | } | |
873 | ||
874 | EFI_STATUS | |
875 | EFIAPI | |
876 | MMCHSReadBlocks ( | |
877 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
878 | IN UINT32 MediaId, | |
879 | IN EFI_LBA Lba, | |
880 | IN UINTN BufferSize, | |
881 | OUT VOID *Buffer | |
882 | ) | |
883 | { | |
884 | EFI_STATUS Status; | |
885 | ||
886 | if (Buffer == NULL) | |
887 | { | |
888 | return EFI_INVALID_PARAMETER; | |
889 | } | |
890 | ||
891 | if (Lba > This->Media->LastBlock) | |
892 | { | |
893 | return EFI_INVALID_PARAMETER; | |
894 | } | |
895 | ||
896 | if ((BufferSize % This->Media->BlockSize) != 0) | |
897 | { | |
898 | return EFI_BAD_BUFFER_SIZE; | |
899 | } | |
900 | ||
901 | //Perform Read operation. | |
902 | Status = SdReadWrite(This, (UINTN)Lba, Buffer, BufferSize, READ); | |
903 | if (EFI_ERROR(Status)) { | |
904 | DEBUG ((EFI_D_ERROR, "Read operation fails.\n")); | |
905 | } | |
906 | ||
907 | return Status; | |
908 | } | |
909 | ||
910 | EFI_STATUS | |
911 | EFIAPI | |
912 | MMCHSWriteBlocks ( | |
913 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
914 | IN UINT32 MediaId, | |
915 | IN EFI_LBA Lba, | |
916 | IN UINTN BufferSize, | |
917 | IN VOID *Buffer | |
918 | ) | |
919 | { | |
920 | EFI_STATUS Status; | |
921 | ||
922 | if (Buffer == NULL) { | |
923 | return EFI_INVALID_PARAMETER; | |
924 | } | |
925 | ||
926 | if (Lba > This->Media->LastBlock) { | |
927 | return EFI_INVALID_PARAMETER; | |
928 | } | |
929 | ||
930 | if ((BufferSize % This->Media->BlockSize) != 0) { | |
931 | return EFI_BAD_BUFFER_SIZE; | |
932 | } | |
933 | ||
934 | if (This->Media->ReadOnly) { | |
935 | return EFI_WRITE_PROTECTED; | |
936 | } | |
937 | ||
938 | //Perform write operation. | |
939 | Status = SdReadWrite(This, (UINTN)Lba, Buffer, BufferSize, WRITE); | |
940 | if (EFI_ERROR(Status)) { | |
941 | DEBUG ((EFI_D_ERROR, "Write operation fails.\n")); | |
942 | } | |
943 | ||
944 | return Status; | |
945 | } | |
946 | ||
947 | EFI_STATUS | |
948 | EFIAPI | |
949 | MMCHSFlushBlocks ( | |
950 | IN EFI_BLOCK_IO_PROTOCOL *This | |
951 | ) | |
952 | { | |
953 | return EFI_SUCCESS; | |
954 | } | |
955 | ||
956 | EFI_BLOCK_IO_PROTOCOL BlockIo = | |
957 | { | |
958 | EFI_BLOCK_IO_INTERFACE_REVISION, // Revision | |
959 | &MMCHSMedia, // *Media | |
960 | MMCHSReset, // Reset | |
961 | MMCHSReadBlocks, // ReadBlocks | |
962 | MMCHSWriteBlocks, // WriteBlocks | |
963 | MMCHSFlushBlocks // FlushBlocks | |
964 | }; | |
965 | ||
966 | EFI_STATUS | |
967 | MMCHSInitialize ( | |
968 | IN EFI_HANDLE ImageHandle, | |
969 | IN EFI_SYSTEM_TABLE *SystemTable | |
970 | ) | |
971 | { | |
972 | EFI_STATUS Status; | |
973 | ||
974 | Status = gBS->LocateProtocol(&gEmbeddedExternalDeviceProtocolGuid, NULL, (VOID **)&gTPS65950); | |
975 | ASSERT_EFI_ERROR(Status); | |
976 | ||
977 | gCardInfo = (CARD_INFO *)AllocateZeroPool(sizeof(CARD_INFO)); | |
978 | if (gCardInfo == NULL) { | |
979 | return EFI_OUT_OF_RESOURCES; | |
980 | } | |
981 | ||
982 | //Initialize MMC host controller. | |
983 | Status = InitializeMMCHS(); | |
984 | if (EFI_ERROR(Status)) { | |
985 | DEBUG ((EFI_D_ERROR, "Initialize MMC host controller fails. Status: %x\n", Status)); | |
986 | return Status; | |
987 | } | |
988 | ||
989 | //Card idenfication | |
990 | Status = PerformCardIdenfication(); | |
991 | if (EFI_ERROR(Status)) { | |
992 | DEBUG ((EFI_D_ERROR, "No MMC/SD card detected.\n")); | |
993 | return EFI_SUCCESS; //NOTE: Check if this is correct.. | |
994 | } | |
995 | ||
996 | //Get CSD (Card specific data) for the detected card. | |
997 | Status = GetCardSpecificData(); | |
998 | if (EFI_ERROR(Status)) { | |
999 | return Status; | |
1000 | } | |
1001 | ||
1002 | //Configure the card in data transfer mode. | |
1003 | Status = PerformCardConfiguration(); | |
1004 | if (EFI_ERROR(Status)) { | |
1005 | return Status; | |
1006 | } | |
1007 | ||
1008 | //Patch the Media structure. | |
1009 | MMCHSMedia.LastBlock = (gCardInfo->NumBlocks - 1); | |
1010 | MMCHSMedia.BlockSize = gCardInfo->BlockSize; | |
1011 | ||
1012 | //Publish BlockIO. | |
1013 | Status = gBS->InstallMultipleProtocolInterfaces(&ImageHandle, | |
1014 | &gEfiBlockIoProtocolGuid, &BlockIo, | |
1015 | &gEfiDevicePathProtocolGuid, &gMmcHsDevicePath, | |
1016 | NULL); | |
1017 | return Status; | |
1018 | } |