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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 "MMCHS.h" | |
25 | ||
26 | EFI_BLOCK_IO_MEDIA gMMCHSMedia = { | |
27 | SIGNATURE_32('s','d','i','o'), // MediaId | |
28 | TRUE, // RemovableMedia | |
29 | FALSE, // MediaPresent | |
30 | FALSE, // LogicalPartition | |
31 | FALSE, // ReadOnly | |
32 | FALSE, // WriteCaching | |
33 | 512, // BlockSize | |
34 | 4, // IoAlign | |
35 | 0, // Pad | |
36 | 0 // LastBlock | |
37 | }; | |
38 | ||
39 | typedef struct { | |
40 | VENDOR_DEVICE_PATH Mmc; | |
41 | EFI_DEVICE_PATH End; | |
42 | } MMCHS_DEVICE_PATH; | |
43 | ||
44 | MMCHS_DEVICE_PATH gMmcHsDevicePath = { | |
45 | { | |
46 | HARDWARE_DEVICE_PATH, | |
47 | HW_VENDOR_DP, | |
48 | (UINT8)(sizeof(VENDOR_DEVICE_PATH)), | |
49 | (UINT8)((sizeof(VENDOR_DEVICE_PATH)) >> 8), | |
50 | 0xb615f1f5, 0x5088, 0x43cd, 0x80, 0x9c, 0xa1, 0x6e, 0x52, 0x48, 0x7d, 0x00 | |
51 | }, | |
52 | { | |
53 | END_DEVICE_PATH_TYPE, | |
54 | END_ENTIRE_DEVICE_PATH_SUBTYPE, | |
55 | sizeof (EFI_DEVICE_PATH_PROTOCOL), | |
56 | 0 | |
57 | } | |
58 | }; | |
59 | ||
60 | CARD_INFO gCardInfo; | |
61 | EMBEDDED_EXTERNAL_DEVICE *gTPS65950; | |
62 | EFI_EVENT gTimerEvent; | |
63 | BOOLEAN gMediaChange = FALSE; | |
64 | ||
65 | // | |
66 | // Internal Functions | |
67 | // | |
68 | ||
69 | ||
70 | VOID | |
71 | ParseCardCIDData ( | |
72 | UINT32 Response0, | |
73 | UINT32 Response1, | |
74 | UINT32 Response2, | |
75 | UINT32 Response3 | |
76 | ) | |
77 | { | |
78 | gCardInfo.CIDData.MDT = ((Response0 >> 8) & 0xFFF); | |
79 | gCardInfo.CIDData.PSN = (((Response0 >> 24) & 0xFF) | ((Response1 & 0xFFFFFF) << 8)); | |
80 | gCardInfo.CIDData.PRV = ((Response1 >> 24) & 0xFF); | |
81 | gCardInfo.CIDData.PNM[4] = ((Response2) & 0xFF); | |
82 | gCardInfo.CIDData.PNM[3] = ((Response2 >> 8) & 0xFF); | |
83 | gCardInfo.CIDData.PNM[2] = ((Response2 >> 16) & 0xFF); | |
84 | gCardInfo.CIDData.PNM[1] = ((Response2 >> 24) & 0xFF); | |
85 | gCardInfo.CIDData.PNM[0] = ((Response3) & 0xFF); | |
86 | gCardInfo.CIDData.OID = ((Response3 >> 8) & 0xFFFF); | |
87 | gCardInfo.CIDData.MID = ((Response3 >> 24) & 0xFF); | |
88 | } | |
89 | ||
90 | ||
91 | VOID | |
92 | UpdateMMCHSClkFrequency ( | |
93 | UINTN NewCLKD | |
94 | ) | |
95 | { | |
96 | //Set Clock enable to 0x0 to not provide the clock to the card | |
97 | MmioAnd32 (MMCHS_SYSCTL, ~CEN); | |
98 | ||
99 | //Set new clock frequency. | |
100 | MmioAndThenOr32 (MMCHS_SYSCTL, ~CLKD_MASK, NewCLKD << 6); | |
101 | ||
102 | //Poll till Internal Clock Stable | |
103 | while ((MmioRead32 (MMCHS_SYSCTL) & ICS_MASK) != ICS); | |
104 | ||
105 | //Set Clock enable to 0x1 to provide the clock to the card | |
106 | MmioOr32 (MMCHS_SYSCTL, CEN); | |
107 | } | |
108 | ||
109 | ||
110 | EFI_STATUS | |
111 | SendCmd ( | |
112 | UINTN Cmd, | |
113 | UINTN CmdInterruptEnableVal, | |
114 | UINTN CmdArgument | |
115 | ) | |
116 | { | |
117 | UINTN MmcStatus; | |
118 | UINTN RetryCount = 0; | |
119 | ||
120 | //Check if command line is in use or not. Poll till command line is available. | |
121 | while ((MmioRead32 (MMCHS_PSTATE) & DATI_MASK) == DATI_NOT_ALLOWED); | |
122 | ||
123 | //Provide the block size. | |
124 | MmioWrite32 (MMCHS_BLK, BLEN_512BYTES); | |
125 | ||
126 | //Setting Data timeout counter value to max value. | |
127 | MmioAndThenOr32 (MMCHS_SYSCTL, ~DTO_MASK, DTO_VAL); | |
128 | ||
129 | //Clear Status register. | |
130 | MmioWrite32 (MMCHS_STAT, 0xFFFFFFFF); | |
131 | ||
132 | //Set command argument register | |
133 | MmioWrite32 (MMCHS_ARG, CmdArgument); | |
134 | ||
135 | //Enable interrupt enable events to occur | |
136 | MmioWrite32 (MMCHS_IE, CmdInterruptEnableVal); | |
137 | ||
138 | //Send a command | |
139 | MmioWrite32 (MMCHS_CMD, Cmd); | |
140 | ||
141 | //Check for the command status. | |
142 | while (RetryCount < MAX_RETRY_COUNT) { | |
143 | do { | |
144 | MmcStatus = MmioRead32 (MMCHS_STAT); | |
145 | } while (MmcStatus == 0); | |
146 | ||
147 | //Read status of command response | |
148 | if ((MmcStatus & ERRI) != 0) { | |
149 | ||
150 | //Perform soft-reset for mmci_cmd line. | |
151 | MmioOr32 (MMCHS_SYSCTL, SRC); | |
152 | while ((MmioRead32 (MMCHS_SYSCTL) & SRC)); | |
153 | ||
154 | DEBUG ((EFI_D_INFO, "MmcStatus: %x\n", MmcStatus)); | |
155 | return EFI_DEVICE_ERROR; | |
156 | } | |
157 | ||
158 | //Check if command is completed. | |
159 | if ((MmcStatus & CC) == CC) { | |
160 | MmioWrite32 (MMCHS_STAT, CC); | |
161 | break; | |
162 | } | |
163 | ||
164 | RetryCount++; | |
165 | } | |
166 | ||
167 | if (RetryCount == MAX_RETRY_COUNT) { | |
168 | return EFI_TIMEOUT; | |
169 | } | |
170 | ||
171 | return EFI_SUCCESS; | |
172 | } | |
173 | ||
174 | ||
175 | VOID | |
176 | GetBlockInformation ( | |
177 | UINTN *BlockSize, | |
178 | UINTN *NumBlocks | |
179 | ) | |
180 | { | |
181 | CSD_SDV2 *CsdSDV2Data; | |
182 | UINTN CardSize; | |
183 | ||
184 | if (gCardInfo.CardType == SD_CARD_2_HIGH) { | |
185 | CsdSDV2Data = (CSD_SDV2 *)&gCardInfo.CSDData; | |
186 | ||
187 | //Populate BlockSize. | |
188 | *BlockSize = (0x1UL << CsdSDV2Data->READ_BL_LEN); | |
189 | ||
190 | //Calculate Total number of blocks. | |
191 | CardSize = CsdSDV2Data->C_SIZELow16 | (CsdSDV2Data->C_SIZEHigh6 << 2); | |
192 | *NumBlocks = ((CardSize + 1) * 1024); | |
193 | } else { | |
194 | //Populate BlockSize. | |
195 | *BlockSize = (0x1UL << gCardInfo.CSDData.READ_BL_LEN); | |
196 | ||
197 | //Calculate Total number of blocks. | |
198 | CardSize = gCardInfo.CSDData.C_SIZELow2 | (gCardInfo.CSDData.C_SIZEHigh10 << 2); | |
199 | *NumBlocks = (CardSize + 1) * (1 << (gCardInfo.CSDData.C_SIZE_MULT + 2)); | |
200 | } | |
201 | ||
202 | //For >=2G card, BlockSize may be 1K, but the transfer size is 512 bytes. | |
203 | if (*BlockSize > 512) { | |
204 | *NumBlocks = MultU64x32(*NumBlocks, *BlockSize/2); | |
205 | *BlockSize = 512; | |
206 | } | |
207 | ||
208 | DEBUG ((EFI_D_INFO, "Card type: %x, BlockSize: %x, NumBlocks: %x\n", gCardInfo.CardType, *BlockSize, *NumBlocks)); | |
209 | } | |
210 | ||
211 | ||
212 | VOID | |
213 | CalculateCardCLKD ( | |
214 | UINTN *ClockFrequencySelect | |
215 | ) | |
216 | { | |
217 | UINT8 MaxDataTransferRate; | |
218 | UINTN TransferRateValue = 0; | |
219 | UINTN TimeValue = 0 ; | |
220 | UINTN Frequency = 0; | |
221 | ||
222 | MaxDataTransferRate = gCardInfo.CSDData.TRAN_SPEED; | |
223 | ||
224 | // For SD Cards we would need to send CMD6 to set | |
225 | // speeds abouve 25MHz. High Speed mode 50 MHz and up | |
226 | ||
227 | //Calculate Transfer rate unit (Bits 2:0 of TRAN_SPEED) | |
228 | switch (MaxDataTransferRate & 0x7) { | |
229 | case 0: | |
230 | TransferRateValue = 100 * 1000; | |
231 | break; | |
232 | ||
233 | case 1: | |
234 | TransferRateValue = 1 * 1000 * 1000; | |
235 | break; | |
236 | ||
237 | case 2: | |
238 | TransferRateValue = 10 * 1000 * 1000; | |
239 | break; | |
240 | ||
241 | case 3: | |
242 | TransferRateValue = 100 * 1000 * 1000; | |
243 | break; | |
244 | ||
245 | default: | |
246 | DEBUG((EFI_D_ERROR, "Invalid parameter.\n")); | |
247 | ASSERT(FALSE); | |
248 | } | |
249 | ||
250 | //Calculate Time value (Bits 6:3 of TRAN_SPEED) | |
251 | switch ((MaxDataTransferRate >> 3) & 0xF) { | |
252 | case 1: | |
253 | TimeValue = 10; | |
254 | break; | |
255 | ||
256 | case 2: | |
257 | TimeValue = 12; | |
258 | break; | |
259 | ||
260 | case 3: | |
261 | TimeValue = 13; | |
262 | break; | |
263 | ||
264 | case 4: | |
265 | TimeValue = 15; | |
266 | break; | |
267 | ||
268 | case 5: | |
269 | TimeValue = 20; | |
270 | break; | |
271 | ||
272 | case 6: | |
273 | TimeValue = 25; | |
274 | break; | |
275 | ||
276 | case 7: | |
277 | TimeValue = 30; | |
278 | break; | |
279 | ||
280 | case 8: | |
281 | TimeValue = 35; | |
282 | break; | |
283 | ||
284 | case 9: | |
285 | TimeValue = 40; | |
286 | break; | |
287 | ||
288 | case 10: | |
289 | TimeValue = 45; | |
290 | break; | |
291 | ||
292 | case 11: | |
293 | TimeValue = 50; | |
294 | break; | |
295 | ||
296 | case 12: | |
297 | TimeValue = 55; | |
298 | break; | |
299 | ||
300 | case 13: | |
301 | TimeValue = 60; | |
302 | break; | |
303 | ||
304 | case 14: | |
305 | TimeValue = 70; | |
306 | break; | |
307 | ||
308 | case 15: | |
309 | TimeValue = 80; | |
310 | break; | |
311 | ||
312 | default: | |
313 | DEBUG((EFI_D_ERROR, "Invalid parameter.\n")); | |
314 | ASSERT(FALSE); | |
315 | } | |
316 | ||
317 | Frequency = TransferRateValue * TimeValue/10; | |
318 | ||
319 | //Calculate Clock divider value to program in MMCHS_SYSCTL[CLKD] field. | |
320 | *ClockFrequencySelect = ((MMC_REFERENCE_CLK/Frequency) + 1); | |
321 | ||
322 | DEBUG ((EFI_D_INFO, "MaxDataTransferRate: 0x%x, Frequency: %d KHz, ClockFrequencySelect: %x\n", MaxDataTransferRate, Frequency/1000, *ClockFrequencySelect)); | |
323 | } | |
324 | ||
325 | ||
326 | VOID | |
327 | GetCardConfigurationData ( | |
328 | VOID | |
329 | ) | |
330 | { | |
331 | UINTN BlockSize; | |
332 | UINTN NumBlocks; | |
333 | UINTN ClockFrequencySelect; | |
334 | ||
335 | //Calculate BlockSize and Total number of blocks in the detected card. | |
336 | GetBlockInformation(&BlockSize, &NumBlocks); | |
337 | gCardInfo.BlockSize = BlockSize; | |
338 | gCardInfo.NumBlocks = NumBlocks; | |
339 | ||
340 | //Calculate Card clock divider value. | |
341 | CalculateCardCLKD(&ClockFrequencySelect); | |
342 | gCardInfo.ClockFrequencySelect = ClockFrequencySelect; | |
343 | } | |
344 | ||
345 | ||
346 | EFI_STATUS | |
347 | InitializeMMCHS ( | |
348 | VOID | |
349 | ) | |
350 | { | |
351 | UINT8 Data = 0; | |
352 | EFI_STATUS Status; | |
353 | ||
354 | //Select Device group to belong to P1 device group in Power IC. | |
355 | Data = DEV_GRP_P1; | |
356 | Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VMMC1_DEV_GRP), 1, &Data); | |
357 | ASSERT_EFI_ERROR(Status); | |
358 | ||
359 | //Configure voltage regulator for MMC1 in Power IC to output 3.0 voltage. | |
360 | Data = VSEL_3_00V; | |
361 | Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VMMC1_DEDICATED_REG), 1, &Data); | |
362 | ASSERT_EFI_ERROR(Status); | |
363 | ||
364 | //After ramping up voltage, set VDDS stable bit to indicate that voltage level is stable. | |
365 | MmioOr32 (CONTROL_PBIAS_LITE, (PBIASLITEVMODE0 | PBIASLITEPWRDNZ0 | PBIASSPEEDCTRL0 | PBIASLITEVMODE1 | PBIASLITEWRDNZ1)); | |
366 | ||
367 | // Enable WP GPIO | |
368 | MmioAndThenOr32 (GPIO1_BASE + GPIO_OE, ~BIT23, BIT23); | |
369 | ||
370 | // Enable Card Detect | |
371 | Data = CARD_DETECT_ENABLE; | |
372 | gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID2, TPS65950_GPIO_CTRL), 1, &Data); | |
373 | ||
374 | ||
375 | return Status; | |
376 | } | |
377 | ||
378 | ||
379 | EFI_STATUS | |
380 | PerformCardIdenfication ( | |
381 | VOID | |
382 | ) | |
383 | { | |
384 | EFI_STATUS Status; | |
385 | UINTN CmdArgument = 0; | |
386 | UINTN Response = 0; | |
387 | UINTN RetryCount = 0; | |
388 | BOOLEAN SDCmd8Supported = FALSE; | |
389 | ||
390 | //Enable interrupts. | |
391 | MmioWrite32 (MMCHS_IE, (BADA_EN | CERR_EN | DEB_EN | DCRC_EN | DTO_EN | CIE_EN | | |
392 | CEB_EN | CCRC_EN | CTO_EN | BRR_EN | BWR_EN | TC_EN | CC_EN)); | |
393 | ||
394 | //Controller INIT procedure start. | |
395 | MmioOr32 (MMCHS_CON, INIT); | |
396 | MmioWrite32 (MMCHS_CMD, 0x00000000); | |
397 | while (!(MmioRead32 (MMCHS_STAT) & CC)); | |
398 | ||
399 | //Wait for 1 ms | |
400 | gBS->Stall(1000); | |
401 | ||
402 | //Set CC bit to 0x1 to clear the flag | |
403 | MmioOr32 (MMCHS_STAT, CC); | |
404 | ||
405 | //Retry INIT procedure. | |
406 | MmioWrite32 (MMCHS_CMD, 0x00000000); | |
407 | while (!(MmioRead32 (MMCHS_STAT) & CC)); | |
408 | ||
409 | //End initialization sequence | |
410 | MmioAnd32 (MMCHS_CON, ~INIT); | |
411 | ||
412 | MmioOr32 (MMCHS_HCTL, (SDVS_3_0_V | DTW_1_BIT | SDBP_ON)); | |
413 | ||
414 | //Change clock frequency to 400KHz to fit protocol | |
415 | UpdateMMCHSClkFrequency(CLKD_400KHZ); | |
416 | ||
417 | MmioOr32 (MMCHS_CON, OD); | |
418 | ||
419 | //Send CMD0 command. | |
420 | Status = SendCmd (CMD0, CMD0_INT_EN, CmdArgument); | |
421 | if (EFI_ERROR(Status)) { | |
422 | DEBUG ((EFI_D_ERROR, "Cmd0 fails.\n")); | |
423 | return Status; | |
424 | } | |
425 | ||
426 | DEBUG ((EFI_D_INFO, "CMD0 response: %x\n", MmioRead32 (MMCHS_RSP10))); | |
427 | ||
428 | //Send CMD5 command. | |
429 | Status = SendCmd (CMD5, CMD5_INT_EN, CmdArgument); | |
430 | if (Status == EFI_SUCCESS) { | |
431 | DEBUG ((EFI_D_ERROR, "CMD5 Success. SDIO card. Follow SDIO card specification.\n")); | |
432 | DEBUG ((EFI_D_INFO, "CMD5 response: %x\n", MmioRead32 (MMCHS_RSP10))); | |
433 | //NOTE: Returning unsupported error for now. Need to implement SDIO specification. | |
434 | return EFI_UNSUPPORTED; | |
435 | } else { | |
436 | DEBUG ((EFI_D_INFO, "CMD5 fails. Not an SDIO card.\n")); | |
437 | } | |
438 | ||
439 | MmioOr32 (MMCHS_SYSCTL, SRC); | |
440 | gBS->Stall(1000); | |
441 | while ((MmioRead32 (MMCHS_SYSCTL) & SRC)); | |
442 | ||
443 | //Send CMD8 command. (New v2.00 command for Voltage check) | |
444 | //Only 2.7V - 3.6V is supported for SD2.0, only SD 2.0 card can pass. | |
445 | //MMC & SD1.1 card will fail this command. | |
446 | CmdArgument = CMD8_ARG; | |
447 | Status = SendCmd (CMD8, CMD8_INT_EN, CmdArgument); | |
448 | if (Status == EFI_SUCCESS) { | |
449 | Response = MmioRead32 (MMCHS_RSP10); | |
450 | DEBUG ((EFI_D_INFO, "CMD8 success. CMD8 response: %x\n", Response)); | |
451 | if (Response != CmdArgument) { | |
452 | return EFI_DEVICE_ERROR; | |
453 | } | |
454 | DEBUG ((EFI_D_INFO, "Card is SD2.0\n")); | |
455 | SDCmd8Supported = TRUE; //Supports high capacity. | |
456 | } else { | |
457 | DEBUG ((EFI_D_INFO, "CMD8 fails. Not an SD2.0 card.\n")); | |
458 | } | |
459 | ||
460 | MmioOr32 (MMCHS_SYSCTL, SRC); | |
461 | gBS->Stall(1000); | |
462 | while ((MmioRead32 (MMCHS_SYSCTL) & SRC)); | |
463 | ||
464 | //Poll till card is busy | |
465 | while (RetryCount < MAX_RETRY_COUNT) { | |
466 | //Send CMD55 command. | |
467 | CmdArgument = 0; | |
468 | Status = SendCmd (CMD55, CMD55_INT_EN, CmdArgument); | |
469 | if (Status == EFI_SUCCESS) { | |
470 | DEBUG ((EFI_D_INFO, "CMD55 success. CMD55 response: %x\n", MmioRead32 (MMCHS_RSP10))); | |
471 | gCardInfo.CardType = SD_CARD; | |
472 | } else { | |
473 | DEBUG ((EFI_D_INFO, "CMD55 fails.\n")); | |
474 | gCardInfo.CardType = MMC_CARD; | |
475 | } | |
476 | ||
477 | //Send appropriate command for the card type which got detected. | |
478 | if (gCardInfo.CardType == SD_CARD) { | |
479 | CmdArgument = ((UINTN *) &(gCardInfo.OCRData))[0]; | |
480 | ||
481 | //Set HCS bit. | |
482 | if (SDCmd8Supported) { | |
483 | CmdArgument |= HCS; | |
484 | } | |
485 | ||
486 | Status = SendCmd (ACMD41, ACMD41_INT_EN, CmdArgument); | |
487 | if (EFI_ERROR(Status)) { | |
488 | DEBUG ((EFI_D_INFO, "ACMD41 fails.\n")); | |
489 | return Status; | |
490 | } | |
491 | ((UINT32 *) &(gCardInfo.OCRData))[0] = MmioRead32 (MMCHS_RSP10); | |
492 | DEBUG ((EFI_D_INFO, "SD card detected. ACMD41 OCR: %x\n", ((UINT32 *) &(gCardInfo.OCRData))[0])); | |
493 | } else if (gCardInfo.CardType == MMC_CARD) { | |
494 | CmdArgument = 0; | |
495 | Status = SendCmd (CMD1, CMD1_INT_EN, CmdArgument); | |
496 | if (EFI_ERROR(Status)) { | |
497 | DEBUG ((EFI_D_INFO, "CMD1 fails.\n")); | |
498 | return Status; | |
499 | } | |
500 | Response = MmioRead32 (MMCHS_RSP10); | |
501 | DEBUG ((EFI_D_INFO, "MMC card detected.. CMD1 response: %x\n", Response)); | |
502 | ||
503 | //NOTE: For now, I am skipping this since I only have an SD card. | |
504 | //Compare card OCR and host OCR (Section 22.6.1.3.2.4) | |
505 | return EFI_UNSUPPORTED; //For now, MMC is not supported. | |
506 | } | |
507 | ||
508 | //Poll the card until it is out of its power-up sequence. | |
509 | if (gCardInfo.OCRData.Busy == 1) { | |
510 | ||
511 | if (SDCmd8Supported) { | |
512 | gCardInfo.CardType = SD_CARD_2; | |
513 | } | |
514 | ||
515 | //Card is ready. Check CCS (Card capacity status) bit (bit#30). | |
516 | //SD 2.0 standard card will response with CCS 0, SD high capacity card will respond with CCS 1. | |
517 | if (gCardInfo.OCRData.AccessMode & BIT1) { | |
518 | gCardInfo.CardType = SD_CARD_2_HIGH; | |
519 | DEBUG ((EFI_D_INFO, "High capacity card.\n")); | |
520 | } else { | |
521 | DEBUG ((EFI_D_INFO, "Standard capacity card.\n")); | |
522 | } | |
523 | ||
524 | break; | |
525 | } | |
526 | ||
527 | gBS->Stall(1000); | |
528 | RetryCount++; | |
529 | } | |
530 | ||
531 | if (RetryCount == MAX_RETRY_COUNT) { | |
532 | DEBUG ((EFI_D_ERROR, "Timeout error. RetryCount: %d\n", RetryCount)); | |
533 | return EFI_TIMEOUT; | |
534 | } | |
535 | ||
536 | //Read CID data. | |
537 | CmdArgument = 0; | |
538 | Status = SendCmd (CMD2, CMD2_INT_EN, CmdArgument); | |
539 | if (EFI_ERROR(Status)) { | |
540 | DEBUG ((EFI_D_ERROR, "CMD2 fails. Status: %x\n", Status)); | |
541 | return Status; | |
542 | } | |
543 | ||
544 | DEBUG ((EFI_D_INFO, "CMD2 response: %x %x %x %x\n", MmioRead32 (MMCHS_RSP10), MmioRead32 (MMCHS_RSP32), MmioRead32 (MMCHS_RSP54), MmioRead32 (MMCHS_RSP76))); | |
545 | ||
546 | //Parse CID register data. | |
547 | ParseCardCIDData(MmioRead32 (MMCHS_RSP10), MmioRead32 (MMCHS_RSP32), MmioRead32 (MMCHS_RSP54), MmioRead32 (MMCHS_RSP76)); | |
548 | ||
549 | //Read RCA | |
550 | CmdArgument = 0; | |
551 | Status = SendCmd (CMD3, CMD3_INT_EN, CmdArgument); | |
552 | if (EFI_ERROR(Status)) { | |
553 | DEBUG ((EFI_D_ERROR, "CMD3 fails. Status: %x\n", Status)); | |
554 | return Status; | |
555 | } | |
556 | ||
557 | //Set RCA for the detected card. RCA is CMD3 response. | |
558 | gCardInfo.RCA = (MmioRead32 (MMCHS_RSP10) >> 16); | |
559 | DEBUG ((EFI_D_INFO, "CMD3 response: RCA %x\n", gCardInfo.RCA)); | |
560 | ||
561 | //MMC Bus setting change after card identification. | |
562 | MmioAnd32 (MMCHS_CON, ~OD); | |
563 | MmioOr32 (MMCHS_HCTL, SDVS_3_0_V); | |
564 | UpdateMMCHSClkFrequency(CLKD_400KHZ); //Set the clock frequency to 400KHz. | |
565 | ||
566 | return EFI_SUCCESS; | |
567 | } | |
568 | ||
569 | ||
570 | EFI_STATUS | |
571 | GetCardSpecificData ( | |
572 | VOID | |
573 | ) | |
574 | { | |
575 | EFI_STATUS Status; | |
576 | UINTN CmdArgument; | |
577 | ||
578 | //Send CMD9 to retrieve CSD. | |
579 | CmdArgument = gCardInfo.RCA << 16; | |
580 | Status = SendCmd (CMD9, CMD9_INT_EN, CmdArgument); | |
581 | if (EFI_ERROR(Status)) { | |
582 | DEBUG ((EFI_D_ERROR, "CMD9 fails. Status: %x\n", Status)); | |
583 | return Status; | |
584 | } | |
585 | ||
586 | //Populate 128-bit CSD register data. | |
587 | ((UINT32 *)&(gCardInfo.CSDData))[0] = MmioRead32 (MMCHS_RSP10); | |
588 | ((UINT32 *)&(gCardInfo.CSDData))[1] = MmioRead32 (MMCHS_RSP32); | |
589 | ((UINT32 *)&(gCardInfo.CSDData))[2] = MmioRead32 (MMCHS_RSP54); | |
590 | ((UINT32 *)&(gCardInfo.CSDData))[3] = MmioRead32 (MMCHS_RSP76); | |
591 | ||
592 | DEBUG ((EFI_D_INFO, "CMD9 response: %x %x %x %x\n", MmioRead32 (MMCHS_RSP10), MmioRead32 (MMCHS_RSP32), MmioRead32 (MMCHS_RSP54), MmioRead32 (MMCHS_RSP76))); | |
593 | ||
594 | //Calculate total number of blocks and max. data transfer rate supported by the detected card. | |
595 | GetCardConfigurationData(); | |
596 | ||
597 | return Status; | |
598 | } | |
599 | ||
600 | ||
601 | EFI_STATUS | |
602 | PerformCardConfiguration ( | |
603 | VOID | |
604 | ) | |
605 | { | |
606 | UINTN CmdArgument = 0; | |
607 | EFI_STATUS Status; | |
608 | ||
609 | //Send CMD7 | |
610 | CmdArgument = gCardInfo.RCA << 16; | |
611 | Status = SendCmd (CMD7, CMD7_INT_EN, CmdArgument); | |
612 | if (EFI_ERROR(Status)) { | |
613 | DEBUG ((EFI_D_ERROR, "CMD7 fails. Status: %x\n", Status)); | |
614 | return Status; | |
615 | } | |
616 | ||
617 | if ((gCardInfo.CardType != UNKNOWN_CARD) && (gCardInfo.CardType != MMC_CARD)) { | |
618 | // We could read SCR register, but SD Card Phys spec stats any SD Card shall | |
619 | // set SCR.SD_BUS_WIDTHS to support 4-bit mode, so why bother? | |
620 | ||
621 | // Send ACMD6 (application specific commands must be prefixed with CMD55) | |
622 | Status = SendCmd (CMD55, CMD55_INT_EN, CmdArgument); | |
623 | if (!EFI_ERROR (Status)) { | |
624 | // set device into 4-bit data bus mode | |
625 | Status = SendCmd (ACMD6, ACMD6_INT_EN, 0x2); | |
626 | if (!EFI_ERROR (Status)) { | |
627 | // Set host controler into 4-bit mode | |
628 | MmioOr32 (MMCHS_HCTL, DTW_4_BIT); | |
629 | DEBUG ((EFI_D_INFO, "SD Memory Card set to 4-bit mode\n")); | |
630 | } | |
631 | } | |
632 | } | |
633 | ||
634 | //Send CMD16 to set the block length | |
635 | CmdArgument = gCardInfo.BlockSize; | |
636 | Status = SendCmd (CMD16, CMD16_INT_EN, CmdArgument); | |
637 | if (EFI_ERROR(Status)) { | |
638 | DEBUG ((EFI_D_ERROR, "CMD16 fails. Status: %x\n", Status)); | |
639 | return Status; | |
640 | } | |
641 | ||
642 | //Change MMCHS clock frequency to what detected card can support. | |
643 | UpdateMMCHSClkFrequency(gCardInfo.ClockFrequencySelect); | |
644 | ||
645 | return EFI_SUCCESS; | |
646 | } | |
647 | ||
648 | ||
649 | EFI_STATUS | |
650 | ReadBlockData ( | |
651 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
652 | OUT VOID *Buffer | |
653 | ) | |
654 | { | |
655 | UINTN MmcStatus; | |
656 | UINTN *DataBuffer = Buffer; | |
657 | UINTN DataSize = This->Media->BlockSize/4; | |
658 | UINTN Count; | |
659 | UINTN RetryCount = 0; | |
660 | ||
661 | //Check controller status to make sure there is no error. | |
662 | while (RetryCount < MAX_RETRY_COUNT) { | |
663 | do { | |
664 | //Read Status. | |
665 | MmcStatus = MmioRead32 (MMCHS_STAT); | |
666 | } while(MmcStatus == 0); | |
667 | ||
668 | //Check if Buffer read ready (BRR) bit is set? | |
669 | if (MmcStatus & BRR) { | |
670 | ||
671 | //Clear BRR bit | |
672 | MmioOr32 (MMCHS_STAT, BRR); | |
673 | ||
674 | //Read block worth of data. | |
675 | for (Count = 0; Count < DataSize; Count++) { | |
676 | *DataBuffer++ = MmioRead32 (MMCHS_DATA); | |
677 | } | |
678 | break; | |
679 | } | |
680 | RetryCount++; | |
681 | } | |
682 | ||
683 | if (RetryCount == MAX_RETRY_COUNT) { | |
684 | return EFI_TIMEOUT; | |
685 | } | |
686 | ||
687 | return EFI_SUCCESS; | |
688 | } | |
689 | ||
690 | ||
691 | EFI_STATUS | |
692 | WriteBlockData ( | |
693 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
694 | OUT VOID *Buffer | |
695 | ) | |
696 | { | |
697 | UINTN MmcStatus; | |
698 | UINTN *DataBuffer = Buffer; | |
699 | UINTN DataSize = This->Media->BlockSize/4; | |
700 | UINTN Count; | |
701 | UINTN RetryCount = 0; | |
702 | ||
703 | //Check controller status to make sure there is no error. | |
704 | while (RetryCount < MAX_RETRY_COUNT) { | |
705 | do { | |
706 | //Read Status. | |
707 | MmcStatus = MmioRead32 (MMCHS_STAT); | |
708 | } while(MmcStatus == 0); | |
709 | ||
710 | //Check if Buffer write ready (BWR) bit is set? | |
711 | if (MmcStatus & BWR) { | |
712 | ||
713 | //Clear BWR bit | |
714 | MmioOr32 (MMCHS_STAT, BWR); | |
715 | ||
716 | //Write block worth of data. | |
717 | for (Count = 0; Count < DataSize; Count++) { | |
718 | MmioWrite32 (MMCHS_DATA, *DataBuffer++); | |
719 | } | |
720 | ||
721 | break; | |
722 | } | |
723 | RetryCount++; | |
724 | } | |
725 | ||
726 | if (RetryCount == MAX_RETRY_COUNT) { | |
727 | return EFI_TIMEOUT; | |
728 | } | |
729 | ||
730 | return EFI_SUCCESS; | |
731 | } | |
732 | ||
733 | EFI_STATUS | |
734 | DmaBlocks ( | |
735 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
736 | IN UINTN Lba, | |
737 | IN OUT VOID *Buffer, | |
738 | IN UINTN BlockCount, | |
739 | IN OPERATION_TYPE OperationType | |
740 | ) | |
741 | { | |
742 | EFI_STATUS Status; | |
743 | UINTN DmaSize = 0; | |
744 | UINTN Cmd = 0; | |
745 | UINTN CmdInterruptEnable; | |
746 | UINTN CmdArgument; | |
747 | VOID *BufferMap; | |
748 | EFI_PHYSICAL_ADDRESS BufferAddress; | |
749 | OMAP_DMA4 Dma4; | |
750 | DMA_MAP_OPERATION DmaOperation; | |
751 | EFI_STATUS MmcStatus; | |
752 | UINTN RetryCount = 0; | |
753 | ||
754 | CpuDeadLoop (); | |
755 | // Map passed in buffer for DMA xfer | |
756 | DmaSize = BlockCount * This->Media->BlockSize; | |
757 | Status = DmaMap (DmaOperation, Buffer, &DmaSize, &BufferAddress, &BufferMap); | |
758 | if (EFI_ERROR (Status)) { | |
759 | return Status; | |
760 | } | |
761 | ||
762 | ZeroMem (&DmaOperation, sizeof (DMA_MAP_OPERATION)); | |
763 | ||
764 | ||
765 | Dma4.DataType = 2; // DMA4_CSDPi[1:0] 32-bit elements from MMCHS_DATA | |
766 | ||
767 | Dma4.SourceEndiansim = 0; // DMA4_CSDPi[21] | |
768 | ||
769 | Dma4.DestinationEndianism = 0; // DMA4_CSDPi[19] | |
770 | ||
771 | Dma4.SourcePacked = 0; // DMA4_CSDPi[6] | |
772 | ||
773 | Dma4.DestinationPacked = 0; // DMA4_CSDPi[13] | |
774 | ||
775 | Dma4.NumberOfElementPerFrame = This->Media->BlockSize/4; // DMA4_CENi (TRM 4K is optimum value) | |
776 | ||
777 | Dma4.NumberOfFramePerTransferBlock = BlockCount; // DMA4_CFNi | |
778 | ||
779 | Dma4.ReadPriority = 0; // DMA4_CCRi[6] Low priority read | |
780 | ||
781 | Dma4.WritePriority = 0; // DMA4_CCRi[23] Prefetech disabled | |
782 | ||
783 | ||
784 | //Populate the command information based on the operation type. | |
785 | if (OperationType == READ) { | |
786 | Cmd = CMD18; //Multiple block read | |
787 | CmdInterruptEnable = CMD18_INT_EN; | |
788 | DmaOperation = MapOperationBusMasterCommonBuffer; | |
789 | ||
790 | Dma4.ReadPortAccessType =0 ; // DMA4_CSDPi[8:7] Can not burst MMCHS_DATA reg | |
791 | ||
792 | Dma4.WritePortAccessType = 3; // DMA4_CSDPi[15:14] Memory burst 16x32 | |
793 | ||
794 | Dma4.WriteMode = 1; // DMA4_CSDPi[17:16] Write posted | |
795 | ||
796 | ||
797 | ||
798 | Dma4.SourceStartAddress = MMCHS_DATA; // DMA4_CSSAi | |
799 | ||
800 | Dma4.DestinationStartAddress = (UINT32)BufferAddress; // DMA4_CDSAi | |
801 | ||
802 | Dma4.SourceElementIndex = 1; // DMA4_CSEi | |
803 | ||
804 | Dma4.SourceFrameIndex = 0x200; // DMA4_CSFi | |
805 | ||
806 | Dma4.DestinationElementIndex = 1; // DMA4_CDEi | |
807 | ||
808 | Dma4.DestinationFrameIndex = 0; // DMA4_CDFi | |
809 | ||
810 | ||
811 | ||
812 | Dma4.ReadPortAccessMode = 0; // DMA4_CCRi[13:12] Always read MMCHS_DATA | |
813 | ||
814 | Dma4.WritePortAccessMode = 1; // DMA4_CCRi[15:14] Post increment memory address | |
815 | ||
816 | Dma4.ReadRequestNumber = 0x1e; // DMA4_CCRi[4:0] Syncro with MMCA_DMA_RX (61) | |
817 | ||
818 | Dma4.WriteRequestNumber = 1; // DMA4_CCRi[20:19] Syncro upper 0x3e == 62 (one based) | |
819 | ||
820 | } else if (OperationType == WRITE) { | |
821 | Cmd = CMD25; //Multiple block write | |
822 | CmdInterruptEnable = CMD25_INT_EN; | |
823 | DmaOperation = MapOperationBusMasterRead; | |
824 | ||
825 | Dma4.ReadPortAccessType = 3; // DMA4_CSDPi[8:7] Memory burst 16x32 | |
826 | ||
827 | Dma4.WritePortAccessType = 0; // DMA4_CSDPi[15:14] Can not burst MMCHS_DATA reg | |
828 | ||
829 | Dma4.WriteMode = 1; // DMA4_CSDPi[17:16] Write posted ??? | |
830 | ||
831 | ||
832 | ||
833 | Dma4.SourceStartAddress = (UINT32)BufferAddress; // DMA4_CSSAi | |
834 | ||
835 | Dma4.DestinationStartAddress = MMCHS_DATA; // DMA4_CDSAi | |
836 | ||
837 | Dma4.SourceElementIndex = 1; // DMA4_CSEi | |
838 | ||
839 | Dma4.SourceFrameIndex = 0x200; // DMA4_CSFi | |
840 | ||
841 | Dma4.DestinationElementIndex = 1; // DMA4_CDEi | |
842 | ||
843 | Dma4.DestinationFrameIndex = 0; // DMA4_CDFi | |
844 | ||
845 | ||
846 | ||
847 | Dma4.ReadPortAccessMode = 1; // DMA4_CCRi[13:12] Post increment memory address | |
848 | ||
849 | Dma4.WritePortAccessMode = 0; // DMA4_CCRi[15:14] Always write MMCHS_DATA | |
850 | ||
851 | Dma4.ReadRequestNumber = 0x1d; // DMA4_CCRi[4:0] Syncro with MMCA_DMA_TX (60) | |
852 | ||
853 | Dma4.WriteRequestNumber = 1; // DMA4_CCRi[20:19] Syncro upper 0x3d == 61 (one based) | |
854 | ||
855 | } else { | |
856 | return EFI_INVALID_PARAMETER; | |
857 | } | |
858 | ||
859 | ||
860 | EnableDmaChannel (2, &Dma4); | |
861 | ||
862 | ||
863 | //Set command argument based on the card access mode (Byte mode or Block mode) | |
864 | if (gCardInfo.OCRData.AccessMode & BIT1) { | |
865 | CmdArgument = Lba; | |
866 | } else { | |
867 | CmdArgument = Lba * This->Media->BlockSize; | |
868 | } | |
869 | ||
870 | //Send Command. | |
871 | Status = SendCmd (Cmd, CmdInterruptEnable, CmdArgument); | |
872 | if (EFI_ERROR (Status)) { | |
873 | DEBUG ((EFI_D_ERROR, "CMD fails. Status: %x\n", Status)); | |
874 | return Status; | |
875 | } | |
876 | ||
877 | //Check for the Transfer completion. | |
878 | while (RetryCount < MAX_RETRY_COUNT) { | |
879 | //Read Status | |
880 | do { | |
881 | MmcStatus = MmioRead32 (MMCHS_STAT); | |
882 | } while (MmcStatus == 0); | |
883 | ||
884 | //Check if Transfer complete (TC) bit is set? | |
885 | if (MmcStatus & TC) { | |
886 | break; | |
887 | } else { | |
888 | DEBUG ((EFI_D_ERROR, "MmcStatus for TC: %x\n", MmcStatus)); | |
889 | //Check if DEB, DCRC or DTO interrupt occured. | |
890 | if ((MmcStatus & DEB) | (MmcStatus & DCRC) | (MmcStatus & DTO)) { | |
891 | //There was an error during the data transfer. | |
892 | ||
893 | //Set SRD bit to 1 and wait until it return to 0x0. | |
894 | MmioOr32 (MMCHS_SYSCTL, SRD); | |
895 | while((MmioRead32 (MMCHS_SYSCTL) & SRD) != 0x0); | |
896 | ||
897 | DisableDmaChannel (2, DMA4_CSR_BLOCK, DMA4_CSR_ERR); | |
898 | DmaUnmap (BufferMap); | |
899 | return EFI_DEVICE_ERROR; | |
900 | } | |
901 | } | |
902 | RetryCount++; | |
903 | } | |
904 | ||
905 | DisableDmaChannel (2, DMA4_CSR_BLOCK, DMA4_CSR_ERR); | |
906 | Status = DmaUnmap (BufferMap); | |
907 | ||
908 | if (RetryCount == MAX_RETRY_COUNT) { | |
909 | DEBUG ((EFI_D_ERROR, "TransferBlockData timed out.\n")); | |
910 | return EFI_TIMEOUT; | |
911 | } | |
912 | ||
913 | return Status; | |
914 | } | |
915 | ||
916 | ||
917 | EFI_STATUS | |
918 | TransferBlock ( | |
919 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
920 | IN UINTN Lba, | |
921 | IN OUT VOID *Buffer, | |
922 | IN OPERATION_TYPE OperationType | |
923 | ) | |
924 | { | |
925 | EFI_STATUS Status; | |
926 | UINTN MmcStatus; | |
927 | UINTN RetryCount = 0; | |
928 | UINTN Cmd = 0; | |
929 | UINTN CmdInterruptEnable = 0; | |
930 | UINTN CmdArgument = 0; | |
931 | ||
932 | ||
933 | //Populate the command information based on the operation type. | |
934 | if (OperationType == READ) { | |
935 | Cmd = CMD17; //Single block read | |
936 | CmdInterruptEnable = CMD18_INT_EN; | |
937 | } else if (OperationType == WRITE) { | |
938 | Cmd = CMD24; //Single block write | |
939 | CmdInterruptEnable = CMD24_INT_EN; | |
940 | } | |
941 | ||
942 | //Set command argument based on the card access mode (Byte mode or Block mode) | |
943 | if (gCardInfo.OCRData.AccessMode & BIT1) { | |
944 | CmdArgument = Lba; | |
945 | } else { | |
946 | CmdArgument = Lba * This->Media->BlockSize; | |
947 | } | |
948 | ||
949 | //Send Command. | |
950 | Status = SendCmd (Cmd, CmdInterruptEnable, CmdArgument); | |
951 | if (EFI_ERROR(Status)) { | |
952 | DEBUG ((EFI_D_ERROR, "CMD fails. Status: %x\n", Status)); | |
953 | return Status; | |
954 | } | |
955 | ||
956 | //Read or Write data. | |
957 | if (OperationType == READ) { | |
958 | Status = ReadBlockData (This, Buffer); | |
959 | if (EFI_ERROR(Status)) { | |
960 | DEBUG((EFI_D_ERROR, "ReadBlockData fails.\n")); | |
961 | return Status; | |
962 | } | |
963 | } else if (OperationType == WRITE) { | |
964 | Status = WriteBlockData (This, Buffer); | |
965 | if (EFI_ERROR(Status)) { | |
966 | DEBUG((EFI_D_ERROR, "WriteBlockData fails.\n")); | |
967 | return Status; | |
968 | } | |
969 | } | |
970 | ||
971 | //Check for the Transfer completion. | |
972 | while (RetryCount < MAX_RETRY_COUNT) { | |
973 | //Read Status | |
974 | do { | |
975 | MmcStatus = MmioRead32 (MMCHS_STAT); | |
976 | } while (MmcStatus == 0); | |
977 | ||
978 | //Check if Transfer complete (TC) bit is set? | |
979 | if (MmcStatus & TC) { | |
980 | break; | |
981 | } else { | |
982 | DEBUG ((EFI_D_ERROR, "MmcStatus for TC: %x\n", MmcStatus)); | |
983 | //Check if DEB, DCRC or DTO interrupt occured. | |
984 | if ((MmcStatus & DEB) | (MmcStatus & DCRC) | (MmcStatus & DTO)) { | |
985 | //There was an error during the data transfer. | |
986 | ||
987 | //Set SRD bit to 1 and wait until it return to 0x0. | |
988 | MmioOr32 (MMCHS_SYSCTL, SRD); | |
989 | while((MmioRead32 (MMCHS_SYSCTL) & SRD) != 0x0); | |
990 | ||
991 | return EFI_DEVICE_ERROR; | |
992 | } | |
993 | } | |
994 | RetryCount++; | |
995 | } | |
996 | ||
997 | if (RetryCount == MAX_RETRY_COUNT) { | |
998 | DEBUG ((EFI_D_ERROR, "TransferBlockData timed out.\n")); | |
999 | return EFI_TIMEOUT; | |
1000 | } | |
1001 | ||
1002 | return EFI_SUCCESS; | |
1003 | } | |
1004 | ||
1005 | BOOLEAN | |
1006 | CardPresent ( | |
1007 | VOID | |
1008 | ) | |
1009 | { | |
1010 | EFI_STATUS Status; | |
1011 | UINT8 Data; | |
1012 | ||
1013 | // | |
1014 | // Card detect is a GPIO0 on the TPS65950 | |
1015 | // | |
1016 | Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID2, GPIODATAIN1), 1, &Data); | |
1017 | if (EFI_ERROR (Status)) { | |
1018 | return FALSE; | |
1019 | } | |
1020 | ||
1021 | if ((Data & CARD_DETECT_BIT) == CARD_DETECT_BIT) { | |
1022 | // No Card present | |
1023 | return FALSE; | |
1024 | } else { | |
1025 | return TRUE; | |
1026 | } | |
1027 | } | |
1028 | ||
1029 | EFI_STATUS | |
1030 | DetectCard ( | |
1031 | VOID | |
1032 | ) | |
1033 | { | |
1034 | EFI_STATUS Status; | |
1035 | ||
1036 | if (!CardPresent ()) { | |
1037 | return EFI_NO_MEDIA; | |
1038 | } | |
1039 | ||
1040 | //Initialize MMC host controller clocks. | |
1041 | Status = InitializeMMCHS (); | |
1042 | if (EFI_ERROR(Status)) { | |
1043 | DEBUG ((EFI_D_ERROR, "Initialize MMC host controller fails. Status: %x\n", Status)); | |
1044 | return Status; | |
1045 | } | |
1046 | ||
1047 | //Software reset of the MMCHS host controller. | |
1048 | MmioWrite32 (MMCHS_SYSCONFIG, SOFTRESET); | |
1049 | gBS->Stall(1000); | |
1050 | while ((MmioRead32 (MMCHS_SYSSTATUS) & RESETDONE_MASK) != RESETDONE); | |
1051 | ||
1052 | //Soft reset for all. | |
1053 | MmioWrite32 (MMCHS_SYSCTL, SRA); | |
1054 | gBS->Stall(1000); | |
1055 | while ((MmioRead32 (MMCHS_SYSCTL) & SRA) != 0x0); | |
1056 | ||
1057 | //Voltage capabilities initialization. Activate VS18 and VS30. | |
1058 | MmioOr32 (MMCHS_CAPA, (VS30 | VS18)); | |
1059 | ||
1060 | //Wakeup configuration | |
1061 | MmioOr32 (MMCHS_SYSCONFIG, ENAWAKEUP); | |
1062 | MmioOr32 (MMCHS_HCTL, IWE); | |
1063 | ||
1064 | //MMCHS Controller default initialization | |
1065 | MmioOr32 (MMCHS_CON, (OD | DW8_1_4_BIT | CEATA_OFF)); | |
1066 | ||
1067 | MmioWrite32 (MMCHS_HCTL, (SDVS_3_0_V | DTW_1_BIT | SDBP_OFF)); | |
1068 | ||
1069 | //Enable internal clock | |
1070 | MmioOr32 (MMCHS_SYSCTL, ICE); | |
1071 | ||
1072 | //Set the clock frequency to 80KHz. | |
1073 | UpdateMMCHSClkFrequency (CLKD_80KHZ); | |
1074 | ||
1075 | //Enable SD bus power. | |
1076 | MmioOr32 (MMCHS_HCTL, (SDBP_ON)); | |
1077 | ||
1078 | //Poll till SD bus power bit is set. | |
1079 | while ((MmioRead32 (MMCHS_HCTL) & SDBP_MASK) != SDBP_ON); | |
1080 | ||
1081 | //Card idenfication | |
1082 | Status = PerformCardIdenfication (); | |
1083 | if (EFI_ERROR(Status)) { | |
1084 | DEBUG ((EFI_D_ERROR, "No MMC/SD card detected.\n")); | |
1085 | return Status; | |
1086 | } | |
1087 | ||
1088 | //Get CSD (Card specific data) for the detected card. | |
1089 | Status = GetCardSpecificData(); | |
1090 | if (EFI_ERROR(Status)) { | |
1091 | return Status; | |
1092 | } | |
1093 | ||
1094 | //Configure the card in data transfer mode. | |
1095 | Status = PerformCardConfiguration(); | |
1096 | if (EFI_ERROR(Status)) { | |
1097 | return Status; | |
1098 | } | |
1099 | ||
1100 | //Patch the Media structure. | |
1101 | gMMCHSMedia.LastBlock = (gCardInfo.NumBlocks - 1); | |
1102 | gMMCHSMedia.BlockSize = gCardInfo.BlockSize; | |
1103 | gMMCHSMedia.ReadOnly = (MmioRead32 (GPIO1_BASE + GPIO_DATAIN) & BIT23) == BIT23; | |
1104 | gMMCHSMedia.MediaPresent = TRUE; | |
1105 | gMMCHSMedia.MediaId++; | |
1106 | ||
1107 | DEBUG ((EFI_D_INFO, "SD Card Media Change on Handle 0x%08x\n", gImageHandle)); | |
1108 | ||
1109 | return Status; | |
1110 | } | |
1111 | ||
1112 | #define MAX_MMCHS_TRANSFER_SIZE 0x4000 | |
1113 | ||
1114 | EFI_STATUS | |
1115 | SdReadWrite ( | |
1116 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
1117 | IN UINTN Lba, | |
1118 | OUT VOID *Buffer, | |
1119 | IN UINTN BufferSize, | |
1120 | IN OPERATION_TYPE OperationType | |
1121 | ) | |
1122 | { | |
1123 | EFI_STATUS Status = EFI_SUCCESS; | |
1124 | UINTN RetryCount = 0; | |
1125 | UINTN BlockCount; | |
1126 | UINTN BytesToBeTranferedThisPass = 0; | |
1127 | UINTN BytesRemainingToBeTransfered; | |
1128 | EFI_TPL OldTpl; | |
1129 | ||
1130 | BOOLEAN Update; | |
1131 | ||
1132 | ||
1133 | ||
1134 | Update = FALSE; | |
1135 | ||
1136 | if (gMediaChange) { | |
1137 | Update = TRUE; | |
1138 | Status = DetectCard (); | |
1139 | if (EFI_ERROR (Status)) { | |
1140 | // We detected a removal | |
1141 | gMMCHSMedia.MediaPresent = FALSE; | |
1142 | gMMCHSMedia.LastBlock = 0; | |
1143 | gMMCHSMedia.BlockSize = 512; // Should be zero but there is a bug in DiskIo | |
1144 | gMMCHSMedia.ReadOnly = FALSE; | |
1145 | } | |
1146 | gMediaChange = FALSE; | |
1147 | } else if (!gMMCHSMedia.MediaPresent) { | |
1148 | Status = EFI_NO_MEDIA; | |
1149 | goto Done; | |
1150 | } | |
1151 | ||
1152 | if (Update) { | |
1153 | DEBUG ((EFI_D_INFO, "SD Card ReinstallProtocolInterface ()\n")); | |
1154 | gBS->ReinstallProtocolInterface ( | |
1155 | ||
1156 | gImageHandle, | |
1157 | ||
1158 | &gEfiBlockIoProtocolGuid, | |
1159 | ||
1160 | &gBlockIo, | |
1161 | ||
1162 | &gBlockIo | |
1163 | ||
1164 | ); | |
1165 | ||
1166 | } | |
1167 | ||
1168 | if (EFI_ERROR (Status)) { | |
1169 | goto Done; | |
1170 | } | |
1171 | ||
1172 | if (Buffer == NULL) { | |
1173 | Status = EFI_INVALID_PARAMETER; | |
1174 | goto Done; | |
1175 | } | |
1176 | ||
1177 | if (Lba > This->Media->LastBlock) { | |
1178 | Status = EFI_INVALID_PARAMETER; | |
1179 | goto Done; | |
1180 | } | |
1181 | ||
1182 | if ((BufferSize % This->Media->BlockSize) != 0) { | |
1183 | Status = EFI_BAD_BUFFER_SIZE; | |
1184 | goto Done; | |
1185 | } | |
1186 | ||
1187 | //Check if the data lines are not in use. | |
1188 | while ((RetryCount++ < MAX_RETRY_COUNT) && ((MmioRead32 (MMCHS_PSTATE) & DATI_MASK) != DATI_ALLOWED)); | |
1189 | if (RetryCount == MAX_RETRY_COUNT) { | |
1190 | Status = EFI_TIMEOUT; | |
1191 | goto Done; | |
1192 | } | |
1193 | ||
1194 | OldTpl = gBS->RaiseTPL (TPL_NOTIFY); | |
1195 | ||
1196 | BytesRemainingToBeTransfered = BufferSize; | |
1197 | while (BytesRemainingToBeTransfered > 0) { | |
1198 | ||
1199 | if (gMediaChange) { | |
1200 | Status = EFI_NO_MEDIA; | |
1201 | DEBUG ((EFI_D_INFO, "SdReadWrite() EFI_NO_MEDIA due to gMediaChange\n")); | |
1202 | goto DoneRestoreTPL; | |
1203 | } | |
1204 | ||
1205 | // Turn OFF DMA path until it is debugged | |
1206 | // BytesToBeTranferedThisPass = (BytesToBeTranferedThisPass >= MAX_MMCHS_TRANSFER_SIZE) ? MAX_MMCHS_TRANSFER_SIZE : BytesRemainingToBeTransfered; | |
1207 | BytesToBeTranferedThisPass = This->Media->BlockSize; | |
1208 | ||
1209 | BlockCount = BytesToBeTranferedThisPass/This->Media->BlockSize; | |
1210 | ||
1211 | if (BlockCount > 1) { | |
1212 | Status = DmaBlocks (This, Lba, Buffer, BlockCount, OperationType); | |
1213 | } else { | |
1214 | //Transfer a block worth of data. | |
1215 | Status = TransferBlock (This, Lba, Buffer, OperationType); | |
1216 | } | |
1217 | ||
1218 | if (EFI_ERROR(Status)) { | |
1219 | DEBUG ((EFI_D_ERROR, "TransferBlockData fails. %x\n", Status)); | |
1220 | goto DoneRestoreTPL; | |
1221 | } | |
1222 | ||
1223 | BytesRemainingToBeTransfered -= BytesToBeTranferedThisPass; | |
1224 | Lba += BlockCount; | |
1225 | Buffer = (UINT8 *)Buffer + This->Media->BlockSize; | |
1226 | } | |
1227 | ||
1228 | DoneRestoreTPL: | |
1229 | ||
1230 | gBS->RestoreTPL (OldTpl); | |
1231 | ||
1232 | Done: | |
1233 | ||
1234 | return Status; | |
1235 | ||
1236 | } | |
1237 | ||
1238 | ||
1239 | /** | |
1240 | ||
1241 | Reset the Block Device. | |
1242 | ||
1243 | ||
1244 | ||
1245 | @param This Indicates a pointer to the calling context. | |
1246 | ||
1247 | @param ExtendedVerification Driver may perform diagnostics on reset. | |
1248 | ||
1249 | ||
1250 | ||
1251 | @retval EFI_SUCCESS The device was reset. | |
1252 | ||
1253 | @retval EFI_DEVICE_ERROR The device is not functioning properly and could | |
1254 | ||
1255 | not be reset. | |
1256 | ||
1257 | ||
1258 | ||
1259 | **/ | |
1260 | EFI_STATUS | |
1261 | EFIAPI | |
1262 | MMCHSReset ( | |
1263 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
1264 | IN BOOLEAN ExtendedVerification | |
1265 | ) | |
1266 | { | |
1267 | return EFI_SUCCESS; | |
1268 | } | |
1269 | ||
1270 | ||
1271 | /** | |
1272 | ||
1273 | Read BufferSize bytes from Lba into Buffer. | |
1274 | ||
1275 | ||
1276 | ||
1277 | @param This Indicates a pointer to the calling context. | |
1278 | ||
1279 | @param MediaId Id of the media, changes every time the media is replaced. | |
1280 | ||
1281 | @param Lba The starting Logical Block Address to read from | |
1282 | ||
1283 | @param BufferSize Size of Buffer, must be a multiple of device block size. | |
1284 | ||
1285 | @param Buffer A pointer to the destination buffer for the data. The caller is | |
1286 | ||
1287 | responsible for either having implicit or explicit ownership of the buffer. | |
1288 | ||
1289 | ||
1290 | ||
1291 | @retval EFI_SUCCESS The data was read correctly from the device. | |
1292 | ||
1293 | @retval EFI_DEVICE_ERROR The device reported an error while performing the read. | |
1294 | ||
1295 | @retval EFI_NO_MEDIA There is no media in the device. | |
1296 | ||
1297 | @retval EFI_MEDIA_CHANGED The MediaId does not matched the current device. | |
1298 | ||
1299 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device. | |
1300 | ||
1301 | @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid, | |
1302 | ||
1303 | or the buffer is not on proper alignment. | |
1304 | ||
1305 | EFI_STATUS | |
1306 | ||
1307 | **/ | |
1308 | EFI_STATUS | |
1309 | EFIAPI | |
1310 | MMCHSReadBlocks ( | |
1311 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
1312 | IN UINT32 MediaId, | |
1313 | IN EFI_LBA Lba, | |
1314 | IN UINTN BufferSize, | |
1315 | OUT VOID *Buffer | |
1316 | ) | |
1317 | { | |
1318 | EFI_STATUS Status; | |
1319 | ||
1320 | //Perform Read operation. | |
1321 | Status = SdReadWrite (This, (UINTN)Lba, Buffer, BufferSize, READ); | |
1322 | ||
1323 | return Status; | |
1324 | ||
1325 | } | |
1326 | ||
1327 | ||
1328 | /** | |
1329 | ||
1330 | Write BufferSize bytes from Lba into Buffer. | |
1331 | ||
1332 | ||
1333 | ||
1334 | @param This Indicates a pointer to the calling context. | |
1335 | ||
1336 | @param MediaId The media ID that the write request is for. | |
1337 | ||
1338 | @param Lba The starting logical block address to be written. The caller is | |
1339 | ||
1340 | responsible for writing to only legitimate locations. | |
1341 | ||
1342 | @param BufferSize Size of Buffer, must be a multiple of device block size. | |
1343 | ||
1344 | @param Buffer A pointer to the source buffer for the data. | |
1345 | ||
1346 | ||
1347 | ||
1348 | @retval EFI_SUCCESS The data was written correctly to the device. | |
1349 | ||
1350 | @retval EFI_WRITE_PROTECTED The device can not be written to. | |
1351 | ||
1352 | @retval EFI_DEVICE_ERROR The device reported an error while performing the write. | |
1353 | ||
1354 | @retval EFI_NO_MEDIA There is no media in the device. | |
1355 | ||
1356 | @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device. | |
1357 | ||
1358 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device. | |
1359 | ||
1360 | @retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid, | |
1361 | ||
1362 | or the buffer is not on proper alignment. | |
1363 | ||
1364 | ||
1365 | ||
1366 | **/ | |
1367 | EFI_STATUS | |
1368 | EFIAPI | |
1369 | MMCHSWriteBlocks ( | |
1370 | IN EFI_BLOCK_IO_PROTOCOL *This, | |
1371 | IN UINT32 MediaId, | |
1372 | IN EFI_LBA Lba, | |
1373 | IN UINTN BufferSize, | |
1374 | IN VOID *Buffer | |
1375 | ) | |
1376 | { | |
1377 | EFI_STATUS Status; | |
1378 | ||
1379 | //Perform write operation. | |
1380 | Status = SdReadWrite (This, (UINTN)Lba, Buffer, BufferSize, WRITE); | |
1381 | ||
1382 | ||
1383 | return Status; | |
1384 | ||
1385 | } | |
1386 | ||
1387 | ||
1388 | /** | |
1389 | ||
1390 | Flush the Block Device. | |
1391 | ||
1392 | ||
1393 | ||
1394 | @param This Indicates a pointer to the calling context. | |
1395 | ||
1396 | ||
1397 | ||
1398 | @retval EFI_SUCCESS All outstanding data was written to the device | |
1399 | ||
1400 | @retval EFI_DEVICE_ERROR The device reported an error while writting back the data | |
1401 | ||
1402 | @retval EFI_NO_MEDIA There is no media in the device. | |
1403 | ||
1404 | ||
1405 | ||
1406 | **/ | |
1407 | EFI_STATUS | |
1408 | EFIAPI | |
1409 | MMCHSFlushBlocks ( | |
1410 | IN EFI_BLOCK_IO_PROTOCOL *This | |
1411 | ) | |
1412 | { | |
1413 | return EFI_SUCCESS; | |
1414 | } | |
1415 | ||
1416 | ||
1417 | EFI_BLOCK_IO_PROTOCOL gBlockIo = { | |
1418 | EFI_BLOCK_IO_INTERFACE_REVISION, // Revision | |
1419 | &gMMCHSMedia, // *Media | |
1420 | MMCHSReset, // Reset | |
1421 | MMCHSReadBlocks, // ReadBlocks | |
1422 | MMCHSWriteBlocks, // WriteBlocks | |
1423 | MMCHSFlushBlocks // FlushBlocks | |
1424 | }; | |
1425 | ||
1426 | ||
1427 | /** | |
1428 | ||
1429 | Timer callback to convert card present hardware into a boolean that indicates | |
1430 | ||
1431 | a media change event has happened. If you just check the GPIO you could see | |
1432 | ||
1433 | card 1 and then check again after card 1 was removed and card 2 was inserted | |
1434 | ||
1435 | and you would still see media present. Thus you need the timer tick to catch | |
1436 | ||
1437 | the toggle event. | |
1438 | ||
1439 | ||
1440 | ||
1441 | @param Event Event whose notification function is being invoked. | |
1442 | ||
1443 | @param Context The pointer to the notification function's context, | |
1444 | ||
1445 | which is implementation-dependent. Not used. | |
1446 | ||
1447 | ||
1448 | ||
1449 | **/ | |
1450 | VOID | |
1451 | EFIAPI | |
1452 | TimerCallback ( | |
1453 | IN EFI_EVENT Event, | |
1454 | IN VOID *Context | |
1455 | ) | |
1456 | { | |
1457 | BOOLEAN Present; | |
1458 | ||
1459 | Present = CardPresent (); | |
1460 | if (gMMCHSMedia.MediaPresent) { | |
1461 | if (!Present && !gMediaChange) { | |
1462 | gMediaChange = TRUE; | |
1463 | } | |
1464 | } else { | |
1465 | if (Present && !gMediaChange) { | |
1466 | gMediaChange = TRUE; | |
1467 | } | |
1468 | } | |
1469 | } | |
1470 | ||
1471 | ||
1472 | EFI_STATUS | |
1473 | EFIAPI | |
1474 | MMCHSInitialize ( | |
1475 | IN EFI_HANDLE ImageHandle, | |
1476 | IN EFI_SYSTEM_TABLE *SystemTable | |
1477 | ) | |
1478 | { | |
1479 | EFI_STATUS Status; | |
1480 | ||
1481 | Status = gBS->LocateProtocol (&gEmbeddedExternalDeviceProtocolGuid, NULL, (VOID **)&gTPS65950); | |
1482 | ASSERT_EFI_ERROR(Status); | |
1483 | ||
1484 | ZeroMem (&gCardInfo, sizeof (CARD_INFO)); | |
1485 | ||
1486 | Status = gBS->CreateEvent (EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_CALLBACK, TimerCallback, NULL, &gTimerEvent); | |
1487 | ASSERT_EFI_ERROR (Status); | |
1488 | ||
1489 | Status = gBS->SetTimer (gTimerEvent, TimerPeriodic, FixedPcdGet32 (PcdMmchsTimerFreq100NanoSeconds)); | |
1490 | ASSERT_EFI_ERROR (Status); | |
1491 | ||
1492 | //Publish BlockIO. | |
1493 | Status = gBS->InstallMultipleProtocolInterfaces ( | |
1494 | &ImageHandle, | |
1495 | &gEfiBlockIoProtocolGuid, &gBlockIo, | |
1496 | &gEfiDevicePathProtocolGuid, &gMmcHsDevicePath, | |
1497 | NULL | |
1498 | ); | |
1499 | return Status; | |
1500 | } |