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1e57a462 | 1 | /** @file\r |
2 | MMC/SD Card driver for OMAP 35xx (SDIO not supported)\r | |
3 | \r | |
4 | This driver always produces a BlockIo protocol but it starts off with no Media\r | |
5 | present. A TimerCallBack detects when media is inserted or removed and after \r | |
6 | a media change event a call to BlockIo ReadBlocks/WriteBlocks will cause the \r | |
7 | media to be detected (or removed) and the BlockIo Media structure will get\r | |
8 | updated. No MMC/SD Card harward registers are updated until the first BlockIo\r | |
9 | ReadBlocks/WriteBlocks after media has been insterted (booting with a card \r | |
10 | plugged in counts as an insertion event). \r | |
11 | \r | |
12 | Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r | |
13 | \r | |
14 | This program and the accompanying materials\r | |
15 | are licensed and made available under the terms and conditions of the BSD License\r | |
16 | which accompanies this distribution. The full text of the license may be found at\r | |
17 | http://opensource.org/licenses/bsd-license.php\r | |
18 | \r | |
19 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
20 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
21 | \r | |
22 | **/\r | |
23 | \r | |
24 | #include "MMCHS.h"\r | |
25 | \r | |
26 | EFI_BLOCK_IO_MEDIA gMMCHSMedia = {\r | |
27 | SIGNATURE_32('s','d','i','o'), // MediaId\r | |
28 | TRUE, // RemovableMedia\r | |
29 | FALSE, // MediaPresent\r | |
30 | FALSE, // LogicalPartition\r | |
31 | FALSE, // ReadOnly\r | |
32 | FALSE, // WriteCaching\r | |
33 | 512, // BlockSize\r | |
34 | 4, // IoAlign\r | |
35 | 0, // Pad\r | |
36 | 0 // LastBlock\r | |
37 | };\r | |
38 | \r | |
39 | typedef struct {\r | |
40 | VENDOR_DEVICE_PATH Mmc;\r | |
41 | EFI_DEVICE_PATH End;\r | |
42 | } MMCHS_DEVICE_PATH;\r | |
43 | \r | |
44 | MMCHS_DEVICE_PATH gMmcHsDevicePath = {\r | |
45 | {\r | |
46 | HARDWARE_DEVICE_PATH,\r | |
47 | HW_VENDOR_DP,\r | |
48 | (UINT8)(sizeof(VENDOR_DEVICE_PATH)),\r | |
49 | (UINT8)((sizeof(VENDOR_DEVICE_PATH)) >> 8),\r | |
50 | 0xb615f1f5, 0x5088, 0x43cd, 0x80, 0x9c, 0xa1, 0x6e, 0x52, 0x48, 0x7d, 0x00 \r | |
51 | },\r | |
52 | {\r | |
53 | END_DEVICE_PATH_TYPE,\r | |
54 | END_ENTIRE_DEVICE_PATH_SUBTYPE,\r | |
55 | sizeof (EFI_DEVICE_PATH_PROTOCOL),\r | |
56 | 0\r | |
57 | }\r | |
58 | };\r | |
59 | \r | |
60 | CARD_INFO gCardInfo;\r | |
61 | EMBEDDED_EXTERNAL_DEVICE *gTPS65950;\r | |
62 | EFI_EVENT gTimerEvent;\r | |
63 | BOOLEAN gMediaChange = FALSE;\r | |
64 | \r | |
65 | //\r | |
66 | // Internal Functions\r | |
67 | //\r | |
68 | \r | |
69 | \r | |
70 | VOID\r | |
71 | ParseCardCIDData (\r | |
72 | UINT32 Response0, \r | |
73 | UINT32 Response1, \r | |
74 | UINT32 Response2,\r | |
75 | UINT32 Response3\r | |
76 | )\r | |
77 | {\r | |
78 | gCardInfo.CIDData.MDT = ((Response0 >> 8) & 0xFFF);\r | |
79 | gCardInfo.CIDData.PSN = (((Response0 >> 24) & 0xFF) | ((Response1 & 0xFFFFFF) << 8));\r | |
80 | gCardInfo.CIDData.PRV = ((Response1 >> 24) & 0xFF);\r | |
81 | gCardInfo.CIDData.PNM[4] = ((Response2) & 0xFF);\r | |
82 | gCardInfo.CIDData.PNM[3] = ((Response2 >> 8) & 0xFF);\r | |
83 | gCardInfo.CIDData.PNM[2] = ((Response2 >> 16) & 0xFF);\r | |
84 | gCardInfo.CIDData.PNM[1] = ((Response2 >> 24) & 0xFF);\r | |
85 | gCardInfo.CIDData.PNM[0] = ((Response3) & 0xFF);\r | |
86 | gCardInfo.CIDData.OID = ((Response3 >> 8) & 0xFFFF);\r | |
87 | gCardInfo.CIDData.MID = ((Response3 >> 24) & 0xFF);\r | |
88 | }\r | |
89 | \r | |
90 | \r | |
91 | VOID\r | |
92 | UpdateMMCHSClkFrequency (\r | |
93 | UINTN NewCLKD\r | |
94 | )\r | |
95 | {\r | |
96 | //Set Clock enable to 0x0 to not provide the clock to the card\r | |
97 | MmioAnd32 (MMCHS_SYSCTL, ~CEN);\r | |
98 | \r | |
99 | //Set new clock frequency.\r | |
100 | MmioAndThenOr32 (MMCHS_SYSCTL, ~CLKD_MASK, NewCLKD << 6); \r | |
101 | \r | |
102 | //Poll till Internal Clock Stable\r | |
103 | while ((MmioRead32 (MMCHS_SYSCTL) & ICS_MASK) != ICS);\r | |
104 | \r | |
105 | //Set Clock enable to 0x1 to provide the clock to the card\r | |
106 | MmioOr32 (MMCHS_SYSCTL, CEN);\r | |
107 | }\r | |
108 | \r | |
109 | \r | |
110 | EFI_STATUS\r | |
111 | SendCmd (\r | |
112 | UINTN Cmd,\r | |
113 | UINTN CmdInterruptEnableVal,\r | |
114 | UINTN CmdArgument\r | |
115 | )\r | |
116 | {\r | |
117 | UINTN MmcStatus;\r | |
118 | UINTN RetryCount = 0;\r | |
119 | \r | |
120 | //Check if command line is in use or not. Poll till command line is available.\r | |
121 | while ((MmioRead32 (MMCHS_PSTATE) & DATI_MASK) == DATI_NOT_ALLOWED);\r | |
122 | \r | |
123 | //Provide the block size.\r | |
124 | MmioWrite32 (MMCHS_BLK, BLEN_512BYTES);\r | |
125 | \r | |
126 | //Setting Data timeout counter value to max value.\r | |
127 | MmioAndThenOr32 (MMCHS_SYSCTL, ~DTO_MASK, DTO_VAL);\r | |
128 | \r | |
129 | //Clear Status register.\r | |
130 | MmioWrite32 (MMCHS_STAT, 0xFFFFFFFF);\r | |
131 | \r | |
132 | //Set command argument register\r | |
133 | MmioWrite32 (MMCHS_ARG, CmdArgument);\r | |
134 | \r | |
135 | //Enable interrupt enable events to occur\r | |
136 | MmioWrite32 (MMCHS_IE, CmdInterruptEnableVal);\r | |
137 | \r | |
138 | //Send a command\r | |
139 | MmioWrite32 (MMCHS_CMD, Cmd);\r | |
140 | \r | |
141 | //Check for the command status.\r | |
142 | while (RetryCount < MAX_RETRY_COUNT) {\r | |
143 | do {\r | |
144 | MmcStatus = MmioRead32 (MMCHS_STAT);\r | |
145 | } while (MmcStatus == 0);\r | |
146 | \r | |
147 | //Read status of command response\r | |
148 | if ((MmcStatus & ERRI) != 0) {\r | |
149 | \r | |
150 | //Perform soft-reset for mmci_cmd line.\r | |
151 | MmioOr32 (MMCHS_SYSCTL, SRC);\r | |
152 | while ((MmioRead32 (MMCHS_SYSCTL) & SRC));\r | |
153 | \r | |
154 | DEBUG ((EFI_D_INFO, "MmcStatus: %x\n", MmcStatus));\r | |
155 | return EFI_DEVICE_ERROR;\r | |
156 | }\r | |
157 | \r | |
158 | //Check if command is completed.\r | |
159 | if ((MmcStatus & CC) == CC) {\r | |
160 | MmioWrite32 (MMCHS_STAT, CC);\r | |
161 | break;\r | |
162 | }\r | |
163 | \r | |
164 | RetryCount++;\r | |
165 | }\r | |
166 | \r | |
167 | if (RetryCount == MAX_RETRY_COUNT) {\r | |
168 | return EFI_TIMEOUT;\r | |
169 | }\r | |
170 | \r | |
171 | return EFI_SUCCESS;\r | |
172 | }\r | |
173 | \r | |
174 | \r | |
175 | VOID\r | |
176 | GetBlockInformation (\r | |
177 | UINTN *BlockSize,\r | |
178 | UINTN *NumBlocks\r | |
179 | )\r | |
180 | {\r | |
181 | CSD_SDV2 *CsdSDV2Data;\r | |
182 | UINTN CardSize;\r | |
183 | \r | |
184 | if (gCardInfo.CardType == SD_CARD_2_HIGH) {\r | |
185 | CsdSDV2Data = (CSD_SDV2 *)&gCardInfo.CSDData;\r | |
186 | \r | |
187 | //Populate BlockSize.\r | |
188 | *BlockSize = (0x1UL << CsdSDV2Data->READ_BL_LEN);\r | |
189 | \r | |
190 | //Calculate Total number of blocks.\r | |
191 | CardSize = CsdSDV2Data->C_SIZELow16 | (CsdSDV2Data->C_SIZEHigh6 << 2);\r | |
192 | *NumBlocks = ((CardSize + 1) * 1024);\r | |
193 | } else {\r | |
194 | //Populate BlockSize.\r | |
195 | *BlockSize = (0x1UL << gCardInfo.CSDData.READ_BL_LEN);\r | |
196 | \r | |
197 | //Calculate Total number of blocks.\r | |
198 | CardSize = gCardInfo.CSDData.C_SIZELow2 | (gCardInfo.CSDData.C_SIZEHigh10 << 2);\r | |
199 | *NumBlocks = (CardSize + 1) * (1 << (gCardInfo.CSDData.C_SIZE_MULT + 2));\r | |
200 | }\r | |
201 | \r | |
202 | //For >=2G card, BlockSize may be 1K, but the transfer size is 512 bytes.\r | |
203 | if (*BlockSize > 512) {\r | |
204 | *NumBlocks = MultU64x32(*NumBlocks, *BlockSize/2);\r | |
205 | *BlockSize = 512;\r | |
206 | }\r | |
207 | \r | |
208 | DEBUG ((EFI_D_INFO, "Card type: %x, BlockSize: %x, NumBlocks: %x\n", gCardInfo.CardType, *BlockSize, *NumBlocks));\r | |
209 | }\r | |
210 | \r | |
211 | \r | |
212 | VOID\r | |
213 | CalculateCardCLKD (\r | |
214 | UINTN *ClockFrequencySelect\r | |
215 | )\r | |
216 | {\r | |
217 | UINT8 MaxDataTransferRate;\r | |
218 | UINTN TransferRateValue = 0;\r | |
219 | UINTN TimeValue = 0 ;\r | |
220 | UINTN Frequency = 0;\r | |
221 | \r | |
222 | MaxDataTransferRate = gCardInfo.CSDData.TRAN_SPEED;\r | |
223 | \r | |
224 | // For SD Cards we would need to send CMD6 to set\r | |
225 | // speeds abouve 25MHz. High Speed mode 50 MHz and up\r | |
226 | \r | |
227 | //Calculate Transfer rate unit (Bits 2:0 of TRAN_SPEED)\r | |
228 | switch (MaxDataTransferRate & 0x7) {\r | |
229 | case 0:\r | |
230 | TransferRateValue = 100 * 1000;\r | |
231 | break;\r | |
232 | \r | |
233 | case 1:\r | |
234 | TransferRateValue = 1 * 1000 * 1000;\r | |
235 | break;\r | |
236 | \r | |
237 | case 2:\r | |
238 | TransferRateValue = 10 * 1000 * 1000;\r | |
239 | break;\r | |
240 | \r | |
241 | case 3:\r | |
242 | TransferRateValue = 100 * 1000 * 1000;\r | |
243 | break;\r | |
244 | \r | |
245 | default:\r | |
246 | DEBUG((EFI_D_ERROR, "Invalid parameter.\n"));\r | |
247 | ASSERT(FALSE);\r | |
248 | }\r | |
249 | \r | |
250 | //Calculate Time value (Bits 6:3 of TRAN_SPEED)\r | |
251 | switch ((MaxDataTransferRate >> 3) & 0xF) {\r | |
252 | case 1:\r | |
253 | TimeValue = 10;\r | |
254 | break;\r | |
255 | \r | |
256 | case 2:\r | |
257 | TimeValue = 12;\r | |
258 | break;\r | |
259 | \r | |
260 | case 3:\r | |
261 | TimeValue = 13;\r | |
262 | break;\r | |
263 | \r | |
264 | case 4:\r | |
265 | TimeValue = 15;\r | |
266 | break;\r | |
267 | \r | |
268 | case 5:\r | |
269 | TimeValue = 20;\r | |
270 | break;\r | |
271 | \r | |
272 | case 6:\r | |
273 | TimeValue = 25;\r | |
274 | break;\r | |
275 | \r | |
276 | case 7:\r | |
277 | TimeValue = 30;\r | |
278 | break;\r | |
279 | \r | |
280 | case 8:\r | |
281 | TimeValue = 35;\r | |
282 | break;\r | |
283 | \r | |
284 | case 9:\r | |
285 | TimeValue = 40;\r | |
286 | break;\r | |
287 | \r | |
288 | case 10:\r | |
289 | TimeValue = 45;\r | |
290 | break;\r | |
291 | \r | |
292 | case 11:\r | |
293 | TimeValue = 50;\r | |
294 | break;\r | |
295 | \r | |
296 | case 12:\r | |
297 | TimeValue = 55;\r | |
298 | break;\r | |
299 | \r | |
300 | case 13:\r | |
301 | TimeValue = 60;\r | |
302 | break;\r | |
303 | \r | |
304 | case 14:\r | |
305 | TimeValue = 70;\r | |
306 | break;\r | |
307 | \r | |
308 | case 15:\r | |
309 | TimeValue = 80;\r | |
310 | break;\r | |
311 | \r | |
312 | default:\r | |
313 | DEBUG((EFI_D_ERROR, "Invalid parameter.\n"));\r | |
314 | ASSERT(FALSE);\r | |
315 | }\r | |
316 | \r | |
317 | Frequency = TransferRateValue * TimeValue/10;\r | |
318 | \r | |
319 | //Calculate Clock divider value to program in MMCHS_SYSCTL[CLKD] field.\r | |
320 | *ClockFrequencySelect = ((MMC_REFERENCE_CLK/Frequency) + 1);\r | |
321 | \r | |
322 | DEBUG ((EFI_D_INFO, "MaxDataTransferRate: 0x%x, Frequency: %d KHz, ClockFrequencySelect: %x\n", MaxDataTransferRate, Frequency/1000, *ClockFrequencySelect));\r | |
323 | }\r | |
324 | \r | |
325 | \r | |
326 | VOID\r | |
327 | GetCardConfigurationData (\r | |
328 | VOID\r | |
329 | )\r | |
330 | {\r | |
331 | UINTN BlockSize;\r | |
332 | UINTN NumBlocks;\r | |
333 | UINTN ClockFrequencySelect;\r | |
334 | \r | |
335 | //Calculate BlockSize and Total number of blocks in the detected card.\r | |
336 | GetBlockInformation(&BlockSize, &NumBlocks);\r | |
337 | gCardInfo.BlockSize = BlockSize;\r | |
338 | gCardInfo.NumBlocks = NumBlocks;\r | |
339 | \r | |
340 | //Calculate Card clock divider value.\r | |
341 | CalculateCardCLKD(&ClockFrequencySelect);\r | |
342 | gCardInfo.ClockFrequencySelect = ClockFrequencySelect;\r | |
343 | }\r | |
344 | \r | |
345 | \r | |
346 | EFI_STATUS\r | |
347 | InitializeMMCHS (\r | |
348 | VOID\r | |
349 | )\r | |
350 | {\r | |
351 | UINT8 Data = 0;\r | |
352 | EFI_STATUS Status;\r | |
353 | \r | |
354 | //Select Device group to belong to P1 device group in Power IC.\r | |
355 | Data = DEV_GRP_P1;\r | |
356 | Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VMMC1_DEV_GRP), 1, &Data);\r | |
357 | ASSERT_EFI_ERROR(Status);\r | |
358 | \r | |
359 | //Configure voltage regulator for MMC1 in Power IC to output 3.0 voltage.\r | |
360 | Data = VSEL_3_00V;\r | |
361 | Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VMMC1_DEDICATED_REG), 1, &Data);\r | |
362 | ASSERT_EFI_ERROR(Status);\r | |
363 | \r | |
364 | //After ramping up voltage, set VDDS stable bit to indicate that voltage level is stable.\r | |
365 | MmioOr32 (CONTROL_PBIAS_LITE, (PBIASLITEVMODE0 | PBIASLITEPWRDNZ0 | PBIASSPEEDCTRL0 | PBIASLITEVMODE1 | PBIASLITEWRDNZ1));\r | |
366 | \r | |
367 | // Enable WP GPIO\r | |
368 | MmioAndThenOr32 (GPIO1_BASE + GPIO_OE, ~BIT23, BIT23);\r | |
369 | \r | |
370 | // Enable Card Detect\r | |
371 | Data = CARD_DETECT_ENABLE;\r | |
372 | gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID2, TPS65950_GPIO_CTRL), 1, &Data);\r | |
373 | \r | |
374 | \r | |
375 | return Status;\r | |
376 | }\r | |
377 | \r | |
378 | \r | |
379 | EFI_STATUS\r | |
380 | PerformCardIdenfication (\r | |
381 | VOID\r | |
382 | )\r | |
383 | {\r | |
384 | EFI_STATUS Status;\r | |
385 | UINTN CmdArgument = 0;\r | |
386 | UINTN Response = 0;\r | |
387 | UINTN RetryCount = 0;\r | |
388 | BOOLEAN SDCmd8Supported = FALSE;\r | |
389 | \r | |
390 | //Enable interrupts.\r | |
391 | MmioWrite32 (MMCHS_IE, (BADA_EN | CERR_EN | DEB_EN | DCRC_EN | DTO_EN | CIE_EN |\r | |
392 | CEB_EN | CCRC_EN | CTO_EN | BRR_EN | BWR_EN | TC_EN | CC_EN));\r | |
393 | \r | |
394 | //Controller INIT procedure start.\r | |
395 | MmioOr32 (MMCHS_CON, INIT);\r | |
396 | MmioWrite32 (MMCHS_CMD, 0x00000000);\r | |
397 | while (!(MmioRead32 (MMCHS_STAT) & CC));\r | |
398 | \r | |
399 | //Wait for 1 ms\r | |
400 | gBS->Stall(1000);\r | |
401 | \r | |
402 | //Set CC bit to 0x1 to clear the flag\r | |
403 | MmioOr32 (MMCHS_STAT, CC);\r | |
404 | \r | |
405 | //Retry INIT procedure.\r | |
406 | MmioWrite32 (MMCHS_CMD, 0x00000000);\r | |
407 | while (!(MmioRead32 (MMCHS_STAT) & CC));\r | |
408 | \r | |
409 | //End initialization sequence\r | |
410 | MmioAnd32 (MMCHS_CON, ~INIT);\r | |
411 | \r | |
412 | MmioOr32 (MMCHS_HCTL, (SDVS_3_0_V | DTW_1_BIT | SDBP_ON));\r | |
413 | \r | |
414 | //Change clock frequency to 400KHz to fit protocol\r | |
415 | UpdateMMCHSClkFrequency(CLKD_400KHZ);\r | |
416 | \r | |
417 | MmioOr32 (MMCHS_CON, OD);\r | |
418 | \r | |
419 | //Send CMD0 command.\r | |
420 | Status = SendCmd (CMD0, CMD0_INT_EN, CmdArgument);\r | |
421 | if (EFI_ERROR(Status)) {\r | |
422 | DEBUG ((EFI_D_ERROR, "Cmd0 fails.\n"));\r | |
423 | return Status;\r | |
424 | }\r | |
425 | \r | |
426 | DEBUG ((EFI_D_INFO, "CMD0 response: %x\n", MmioRead32 (MMCHS_RSP10)));\r | |
427 | \r | |
428 | //Send CMD5 command. \r | |
429 | Status = SendCmd (CMD5, CMD5_INT_EN, CmdArgument);\r | |
430 | if (Status == EFI_SUCCESS) {\r | |
431 | DEBUG ((EFI_D_ERROR, "CMD5 Success. SDIO card. Follow SDIO card specification.\n"));\r | |
432 | DEBUG ((EFI_D_INFO, "CMD5 response: %x\n", MmioRead32 (MMCHS_RSP10)));\r | |
433 | //NOTE: Returning unsupported error for now. Need to implement SDIO specification.\r | |
434 | return EFI_UNSUPPORTED; \r | |
435 | } else {\r | |
436 | DEBUG ((EFI_D_INFO, "CMD5 fails. Not an SDIO card.\n"));\r | |
437 | }\r | |
438 | \r | |
439 | MmioOr32 (MMCHS_SYSCTL, SRC);\r | |
440 | gBS->Stall(1000);\r | |
441 | while ((MmioRead32 (MMCHS_SYSCTL) & SRC));\r | |
442 | \r | |
443 | //Send CMD8 command. (New v2.00 command for Voltage check)\r | |
444 | //Only 2.7V - 3.6V is supported for SD2.0, only SD 2.0 card can pass.\r | |
445 | //MMC & SD1.1 card will fail this command.\r | |
446 | CmdArgument = CMD8_ARG;\r | |
447 | Status = SendCmd (CMD8, CMD8_INT_EN, CmdArgument);\r | |
448 | if (Status == EFI_SUCCESS) {\r | |
449 | Response = MmioRead32 (MMCHS_RSP10);\r | |
450 | DEBUG ((EFI_D_INFO, "CMD8 success. CMD8 response: %x\n", Response));\r | |
451 | if (Response != CmdArgument) {\r | |
452 | return EFI_DEVICE_ERROR;\r | |
453 | }\r | |
454 | DEBUG ((EFI_D_INFO, "Card is SD2.0\n"));\r | |
455 | SDCmd8Supported = TRUE; //Supports high capacity.\r | |
456 | } else {\r | |
457 | DEBUG ((EFI_D_INFO, "CMD8 fails. Not an SD2.0 card.\n"));\r | |
458 | }\r | |
459 | \r | |
460 | MmioOr32 (MMCHS_SYSCTL, SRC);\r | |
461 | gBS->Stall(1000);\r | |
462 | while ((MmioRead32 (MMCHS_SYSCTL) & SRC));\r | |
463 | \r | |
464 | //Poll till card is busy\r | |
465 | while (RetryCount < MAX_RETRY_COUNT) {\r | |
466 | //Send CMD55 command. \r | |
467 | CmdArgument = 0;\r | |
468 | Status = SendCmd (CMD55, CMD55_INT_EN, CmdArgument);\r | |
469 | if (Status == EFI_SUCCESS) {\r | |
470 | DEBUG ((EFI_D_INFO, "CMD55 success. CMD55 response: %x\n", MmioRead32 (MMCHS_RSP10)));\r | |
471 | gCardInfo.CardType = SD_CARD;\r | |
472 | } else {\r | |
473 | DEBUG ((EFI_D_INFO, "CMD55 fails.\n"));\r | |
474 | gCardInfo.CardType = MMC_CARD;\r | |
475 | }\r | |
476 | \r | |
477 | //Send appropriate command for the card type which got detected.\r | |
478 | if (gCardInfo.CardType == SD_CARD) {\r | |
479 | CmdArgument = ((UINTN *) &(gCardInfo.OCRData))[0];\r | |
480 | \r | |
481 | //Set HCS bit.\r | |
482 | if (SDCmd8Supported) {\r | |
483 | CmdArgument |= HCS;\r | |
484 | }\r | |
485 | \r | |
486 | Status = SendCmd (ACMD41, ACMD41_INT_EN, CmdArgument);\r | |
487 | if (EFI_ERROR(Status)) {\r | |
488 | DEBUG ((EFI_D_INFO, "ACMD41 fails.\n"));\r | |
489 | return Status;\r | |
490 | }\r | |
491 | ((UINT32 *) &(gCardInfo.OCRData))[0] = MmioRead32 (MMCHS_RSP10);\r | |
492 | DEBUG ((EFI_D_INFO, "SD card detected. ACMD41 OCR: %x\n", ((UINT32 *) &(gCardInfo.OCRData))[0]));\r | |
493 | } else if (gCardInfo.CardType == MMC_CARD) {\r | |
494 | CmdArgument = 0;\r | |
495 | Status = SendCmd (CMD1, CMD1_INT_EN, CmdArgument);\r | |
496 | if (EFI_ERROR(Status)) {\r | |
497 | DEBUG ((EFI_D_INFO, "CMD1 fails.\n"));\r | |
498 | return Status;\r | |
499 | }\r | |
500 | Response = MmioRead32 (MMCHS_RSP10);\r | |
501 | DEBUG ((EFI_D_INFO, "MMC card detected.. CMD1 response: %x\n", Response));\r | |
502 | \r | |
503 | //NOTE: For now, I am skipping this since I only have an SD card.\r | |
504 | //Compare card OCR and host OCR (Section 22.6.1.3.2.4)\r | |
505 | return EFI_UNSUPPORTED; //For now, MMC is not supported.\r | |
506 | }\r | |
507 | \r | |
508 | //Poll the card until it is out of its power-up sequence.\r | |
509 | if (gCardInfo.OCRData.Busy == 1) {\r | |
510 | \r | |
511 | if (SDCmd8Supported) {\r | |
512 | gCardInfo.CardType = SD_CARD_2;\r | |
513 | }\r | |
514 | \r | |
515 | //Card is ready. Check CCS (Card capacity status) bit (bit#30).\r | |
516 | //SD 2.0 standard card will response with CCS 0, SD high capacity card will respond with CCS 1.\r | |
517 | if (gCardInfo.OCRData.AccessMode & BIT1) {\r | |
518 | gCardInfo.CardType = SD_CARD_2_HIGH;\r | |
519 | DEBUG ((EFI_D_INFO, "High capacity card.\n"));\r | |
520 | } else {\r | |
521 | DEBUG ((EFI_D_INFO, "Standard capacity card.\n"));\r | |
522 | }\r | |
523 | \r | |
524 | break;\r | |
525 | }\r | |
526 | \r | |
527 | gBS->Stall(1000);\r | |
528 | RetryCount++;\r | |
529 | }\r | |
530 | \r | |
531 | if (RetryCount == MAX_RETRY_COUNT) {\r | |
532 | DEBUG ((EFI_D_ERROR, "Timeout error. RetryCount: %d\n", RetryCount));\r | |
533 | return EFI_TIMEOUT;\r | |
534 | }\r | |
535 | \r | |
536 | //Read CID data.\r | |
537 | CmdArgument = 0;\r | |
538 | Status = SendCmd (CMD2, CMD2_INT_EN, CmdArgument);\r | |
539 | if (EFI_ERROR(Status)) {\r | |
540 | DEBUG ((EFI_D_ERROR, "CMD2 fails. Status: %x\n", Status));\r | |
541 | return Status;\r | |
542 | }\r | |
543 | \r | |
544 | DEBUG ((EFI_D_INFO, "CMD2 response: %x %x %x %x\n", MmioRead32 (MMCHS_RSP10), MmioRead32 (MMCHS_RSP32), MmioRead32 (MMCHS_RSP54), MmioRead32 (MMCHS_RSP76)));\r | |
545 | \r | |
546 | //Parse CID register data.\r | |
547 | ParseCardCIDData(MmioRead32 (MMCHS_RSP10), MmioRead32 (MMCHS_RSP32), MmioRead32 (MMCHS_RSP54), MmioRead32 (MMCHS_RSP76));\r | |
548 | \r | |
549 | //Read RCA\r | |
550 | CmdArgument = 0;\r | |
551 | Status = SendCmd (CMD3, CMD3_INT_EN, CmdArgument);\r | |
552 | if (EFI_ERROR(Status)) {\r | |
553 | DEBUG ((EFI_D_ERROR, "CMD3 fails. Status: %x\n", Status));\r | |
554 | return Status;\r | |
555 | }\r | |
556 | \r | |
557 | //Set RCA for the detected card. RCA is CMD3 response.\r | |
558 | gCardInfo.RCA = (MmioRead32 (MMCHS_RSP10) >> 16);\r | |
559 | DEBUG ((EFI_D_INFO, "CMD3 response: RCA %x\n", gCardInfo.RCA));\r | |
560 | \r | |
561 | //MMC Bus setting change after card identification.\r | |
562 | MmioAnd32 (MMCHS_CON, ~OD);\r | |
563 | MmioOr32 (MMCHS_HCTL, SDVS_3_0_V);\r | |
564 | UpdateMMCHSClkFrequency(CLKD_400KHZ); //Set the clock frequency to 400KHz.\r | |
565 | \r | |
566 | return EFI_SUCCESS;\r | |
567 | }\r | |
568 | \r | |
569 | \r | |
570 | EFI_STATUS\r | |
571 | GetCardSpecificData (\r | |
572 | VOID\r | |
573 | )\r | |
574 | {\r | |
575 | EFI_STATUS Status;\r | |
576 | UINTN CmdArgument;\r | |
577 | \r | |
578 | //Send CMD9 to retrieve CSD.\r | |
579 | CmdArgument = gCardInfo.RCA << 16;\r | |
580 | Status = SendCmd (CMD9, CMD9_INT_EN, CmdArgument);\r | |
581 | if (EFI_ERROR(Status)) {\r | |
582 | DEBUG ((EFI_D_ERROR, "CMD9 fails. Status: %x\n", Status));\r | |
583 | return Status;\r | |
584 | }\r | |
585 | \r | |
586 | //Populate 128-bit CSD register data.\r | |
587 | ((UINT32 *)&(gCardInfo.CSDData))[0] = MmioRead32 (MMCHS_RSP10);\r | |
588 | ((UINT32 *)&(gCardInfo.CSDData))[1] = MmioRead32 (MMCHS_RSP32);\r | |
589 | ((UINT32 *)&(gCardInfo.CSDData))[2] = MmioRead32 (MMCHS_RSP54);\r | |
590 | ((UINT32 *)&(gCardInfo.CSDData))[3] = MmioRead32 (MMCHS_RSP76);\r | |
591 | \r | |
592 | DEBUG ((EFI_D_INFO, "CMD9 response: %x %x %x %x\n", MmioRead32 (MMCHS_RSP10), MmioRead32 (MMCHS_RSP32), MmioRead32 (MMCHS_RSP54), MmioRead32 (MMCHS_RSP76)));\r | |
593 | \r | |
594 | //Calculate total number of blocks and max. data transfer rate supported by the detected card.\r | |
595 | GetCardConfigurationData();\r | |
596 | \r | |
597 | return Status;\r | |
598 | }\r | |
599 | \r | |
600 | \r | |
601 | EFI_STATUS\r | |
602 | PerformCardConfiguration (\r | |
603 | VOID\r | |
604 | )\r | |
605 | {\r | |
606 | UINTN CmdArgument = 0;\r | |
607 | EFI_STATUS Status;\r | |
608 | \r | |
609 | //Send CMD7\r | |
610 | CmdArgument = gCardInfo.RCA << 16;\r | |
611 | Status = SendCmd (CMD7, CMD7_INT_EN, CmdArgument);\r | |
612 | if (EFI_ERROR(Status)) {\r | |
613 | DEBUG ((EFI_D_ERROR, "CMD7 fails. Status: %x\n", Status));\r | |
614 | return Status;\r | |
615 | }\r | |
616 | \r | |
617 | if ((gCardInfo.CardType != UNKNOWN_CARD) && (gCardInfo.CardType != MMC_CARD)) {\r | |
618 | // We could read SCR register, but SD Card Phys spec stats any SD Card shall\r | |
619 | // set SCR.SD_BUS_WIDTHS to support 4-bit mode, so why bother?\r | |
620 | \r | |
621 | // Send ACMD6 (application specific commands must be prefixed with CMD55)\r | |
622 | Status = SendCmd (CMD55, CMD55_INT_EN, CmdArgument);\r | |
623 | if (!EFI_ERROR (Status)) {\r | |
624 | // set device into 4-bit data bus mode\r | |
625 | Status = SendCmd (ACMD6, ACMD6_INT_EN, 0x2);\r | |
626 | if (!EFI_ERROR (Status)) {\r | |
627 | // Set host controler into 4-bit mode\r | |
628 | MmioOr32 (MMCHS_HCTL, DTW_4_BIT);\r | |
629 | DEBUG ((EFI_D_INFO, "SD Memory Card set to 4-bit mode\n"));\r | |
630 | }\r | |
631 | }\r | |
632 | }\r | |
633 | \r | |
634 | //Send CMD16 to set the block length\r | |
635 | CmdArgument = gCardInfo.BlockSize;\r | |
636 | Status = SendCmd (CMD16, CMD16_INT_EN, CmdArgument);\r | |
637 | if (EFI_ERROR(Status)) {\r | |
638 | DEBUG ((EFI_D_ERROR, "CMD16 fails. Status: %x\n", Status));\r | |
639 | return Status;\r | |
640 | }\r | |
641 | \r | |
642 | //Change MMCHS clock frequency to what detected card can support.\r | |
643 | UpdateMMCHSClkFrequency(gCardInfo.ClockFrequencySelect);\r | |
644 | \r | |
645 | return EFI_SUCCESS;\r | |
646 | }\r | |
647 | \r | |
648 | \r | |
649 | EFI_STATUS\r | |
650 | ReadBlockData (\r | |
651 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
652 | OUT VOID *Buffer\r | |
653 | )\r | |
654 | {\r | |
655 | UINTN MmcStatus;\r | |
656 | UINTN *DataBuffer = Buffer;\r | |
657 | UINTN DataSize = This->Media->BlockSize/4;\r | |
658 | UINTN Count;\r | |
659 | UINTN RetryCount = 0;\r | |
660 | \r | |
661 | //Check controller status to make sure there is no error.\r | |
662 | while (RetryCount < MAX_RETRY_COUNT) {\r | |
663 | do {\r | |
664 | //Read Status.\r | |
665 | MmcStatus = MmioRead32 (MMCHS_STAT);\r | |
666 | } while(MmcStatus == 0);\r | |
667 | \r | |
668 | //Check if Buffer read ready (BRR) bit is set?\r | |
669 | if (MmcStatus & BRR) {\r | |
670 | \r | |
671 | //Clear BRR bit\r | |
672 | MmioOr32 (MMCHS_STAT, BRR);\r | |
673 | \r | |
674 | //Read block worth of data.\r | |
675 | for (Count = 0; Count < DataSize; Count++) {\r | |
676 | *DataBuffer++ = MmioRead32 (MMCHS_DATA);\r | |
677 | }\r | |
678 | break;\r | |
679 | }\r | |
680 | RetryCount++;\r | |
681 | }\r | |
682 | \r | |
683 | if (RetryCount == MAX_RETRY_COUNT) {\r | |
684 | return EFI_TIMEOUT;\r | |
685 | }\r | |
686 | \r | |
687 | return EFI_SUCCESS;\r | |
688 | }\r | |
689 | \r | |
690 | \r | |
691 | EFI_STATUS\r | |
692 | WriteBlockData (\r | |
693 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
694 | OUT VOID *Buffer\r | |
695 | )\r | |
696 | {\r | |
697 | UINTN MmcStatus;\r | |
698 | UINTN *DataBuffer = Buffer;\r | |
699 | UINTN DataSize = This->Media->BlockSize/4;\r | |
700 | UINTN Count;\r | |
701 | UINTN RetryCount = 0;\r | |
702 | \r | |
703 | //Check controller status to make sure there is no error.\r | |
704 | while (RetryCount < MAX_RETRY_COUNT) {\r | |
705 | do {\r | |
706 | //Read Status.\r | |
707 | MmcStatus = MmioRead32 (MMCHS_STAT);\r | |
708 | } while(MmcStatus == 0);\r | |
709 | \r | |
710 | //Check if Buffer write ready (BWR) bit is set?\r | |
711 | if (MmcStatus & BWR) {\r | |
712 | \r | |
713 | //Clear BWR bit\r | |
714 | MmioOr32 (MMCHS_STAT, BWR);\r | |
715 | \r | |
716 | //Write block worth of data.\r | |
717 | for (Count = 0; Count < DataSize; Count++) {\r | |
718 | MmioWrite32 (MMCHS_DATA, *DataBuffer++);\r | |
719 | }\r | |
720 | \r | |
721 | break;\r | |
722 | }\r | |
723 | RetryCount++;\r | |
724 | }\r | |
725 | \r | |
726 | if (RetryCount == MAX_RETRY_COUNT) {\r | |
727 | return EFI_TIMEOUT;\r | |
728 | }\r | |
729 | \r | |
730 | return EFI_SUCCESS;\r | |
731 | }\r | |
732 | \r | |
733 | EFI_STATUS\r | |
734 | DmaBlocks (\r | |
735 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
736 | IN UINTN Lba,\r | |
737 | IN OUT VOID *Buffer,\r | |
738 | IN UINTN BlockCount,\r | |
739 | IN OPERATION_TYPE OperationType\r | |
740 | )\r | |
741 | {\r | |
742 | EFI_STATUS Status;\r | |
743 | UINTN DmaSize = 0;\r | |
744 | UINTN Cmd = 0;\r | |
745 | UINTN CmdInterruptEnable;\r | |
746 | UINTN CmdArgument;\r | |
747 | VOID *BufferMap;\r | |
748 | EFI_PHYSICAL_ADDRESS BufferAddress;\r | |
749 | OMAP_DMA4 Dma4;\r | |
750 | DMA_MAP_OPERATION DmaOperation;\r | |
751 | EFI_STATUS MmcStatus;\r | |
752 | UINTN RetryCount = 0;\r | |
753 | \r | |
754 | CpuDeadLoop ();\r | |
755 | // Map passed in buffer for DMA xfer\r | |
756 | DmaSize = BlockCount * This->Media->BlockSize;\r | |
757 | Status = DmaMap (DmaOperation, Buffer, &DmaSize, &BufferAddress, &BufferMap);\r | |
758 | if (EFI_ERROR (Status)) {\r | |
759 | return Status;\r | |
760 | }\r | |
761 | \r | |
762 | ZeroMem (&DmaOperation, sizeof (DMA_MAP_OPERATION));\r | |
763 | \r | |
764 | \r | |
765 | Dma4.DataType = 2; // DMA4_CSDPi[1:0] 32-bit elements from MMCHS_DATA\r | |
766 | \r | |
767 | Dma4.SourceEndiansim = 0; // DMA4_CSDPi[21] \r | |
768 | \r | |
769 | Dma4.DestinationEndianism = 0; // DMA4_CSDPi[19]\r | |
770 | \r | |
771 | Dma4.SourcePacked = 0; // DMA4_CSDPi[6]\r | |
772 | \r | |
773 | Dma4.DestinationPacked = 0; // DMA4_CSDPi[13]\r | |
774 | \r | |
775 | Dma4.NumberOfElementPerFrame = This->Media->BlockSize/4; // DMA4_CENi (TRM 4K is optimum value) \r | |
776 | \r | |
777 | Dma4.NumberOfFramePerTransferBlock = BlockCount; // DMA4_CFNi \r | |
778 | \r | |
779 | Dma4.ReadPriority = 0; // DMA4_CCRi[6] Low priority read \r | |
780 | \r | |
781 | Dma4.WritePriority = 0; // DMA4_CCRi[23] Prefetech disabled\r | |
782 | \r | |
783 | \r | |
784 | //Populate the command information based on the operation type.\r | |
785 | if (OperationType == READ) {\r | |
786 | Cmd = CMD18; //Multiple block read\r | |
787 | CmdInterruptEnable = CMD18_INT_EN;\r | |
788 | DmaOperation = MapOperationBusMasterCommonBuffer;\r | |
789 | \r | |
790 | Dma4.ReadPortAccessType =0 ; // DMA4_CSDPi[8:7] Can not burst MMCHS_DATA reg\r | |
791 | \r | |
792 | Dma4.WritePortAccessType = 3; // DMA4_CSDPi[15:14] Memory burst 16x32\r | |
793 | \r | |
794 | Dma4.WriteMode = 1; // DMA4_CSDPi[17:16] Write posted\r | |
795 | \r | |
796 | \r | |
797 | \r | |
798 | Dma4.SourceStartAddress = MMCHS_DATA; // DMA4_CSSAi\r | |
799 | \r | |
800 | Dma4.DestinationStartAddress = (UINT32)BufferAddress; // DMA4_CDSAi\r | |
801 | \r | |
802 | Dma4.SourceElementIndex = 1; // DMA4_CSEi\r | |
803 | \r | |
804 | Dma4.SourceFrameIndex = 0x200; // DMA4_CSFi\r | |
805 | \r | |
806 | Dma4.DestinationElementIndex = 1; // DMA4_CDEi\r | |
807 | \r | |
808 | Dma4.DestinationFrameIndex = 0; // DMA4_CDFi\r | |
809 | \r | |
810 | \r | |
811 | \r | |
812 | Dma4.ReadPortAccessMode = 0; // DMA4_CCRi[13:12] Always read MMCHS_DATA\r | |
813 | \r | |
814 | Dma4.WritePortAccessMode = 1; // DMA4_CCRi[15:14] Post increment memory address\r | |
815 | \r | |
816 | Dma4.ReadRequestNumber = 0x1e; // DMA4_CCRi[4:0] Syncro with MMCA_DMA_RX (61) \r | |
817 | \r | |
818 | Dma4.WriteRequestNumber = 1; // DMA4_CCRi[20:19] Syncro upper 0x3e == 62 (one based)\r | |
819 | \r | |
820 | } else if (OperationType == WRITE) { \r | |
821 | Cmd = CMD25; //Multiple block write\r | |
822 | CmdInterruptEnable = CMD25_INT_EN;\r | |
823 | DmaOperation = MapOperationBusMasterRead;\r | |
824 | \r | |
825 | Dma4.ReadPortAccessType = 3; // DMA4_CSDPi[8:7] Memory burst 16x32\r | |
826 | \r | |
827 | Dma4.WritePortAccessType = 0; // DMA4_CSDPi[15:14] Can not burst MMCHS_DATA reg\r | |
828 | \r | |
829 | Dma4.WriteMode = 1; // DMA4_CSDPi[17:16] Write posted ???\r | |
830 | \r | |
831 | \r | |
832 | \r | |
833 | Dma4.SourceStartAddress = (UINT32)BufferAddress; // DMA4_CSSAi\r | |
834 | \r | |
835 | Dma4.DestinationStartAddress = MMCHS_DATA; // DMA4_CDSAi\r | |
836 | \r | |
837 | Dma4.SourceElementIndex = 1; // DMA4_CSEi\r | |
838 | \r | |
839 | Dma4.SourceFrameIndex = 0x200; // DMA4_CSFi\r | |
840 | \r | |
841 | Dma4.DestinationElementIndex = 1; // DMA4_CDEi\r | |
842 | \r | |
843 | Dma4.DestinationFrameIndex = 0; // DMA4_CDFi\r | |
844 | \r | |
845 | \r | |
846 | \r | |
847 | Dma4.ReadPortAccessMode = 1; // DMA4_CCRi[13:12] Post increment memory address\r | |
848 | \r | |
849 | Dma4.WritePortAccessMode = 0; // DMA4_CCRi[15:14] Always write MMCHS_DATA\r | |
850 | \r | |
851 | Dma4.ReadRequestNumber = 0x1d; // DMA4_CCRi[4:0] Syncro with MMCA_DMA_TX (60) \r | |
852 | \r | |
853 | Dma4.WriteRequestNumber = 1; // DMA4_CCRi[20:19] Syncro upper 0x3d == 61 (one based)\r | |
854 | \r | |
855 | } else {\r | |
856 | return EFI_INVALID_PARAMETER;\r | |
857 | }\r | |
858 | \r | |
859 | \r | |
860 | EnableDmaChannel (2, &Dma4);\r | |
861 | \r | |
862 | \r | |
863 | //Set command argument based on the card access mode (Byte mode or Block mode)\r | |
864 | if (gCardInfo.OCRData.AccessMode & BIT1) {\r | |
865 | CmdArgument = Lba;\r | |
866 | } else {\r | |
867 | CmdArgument = Lba * This->Media->BlockSize;\r | |
868 | }\r | |
869 | \r | |
870 | //Send Command.\r | |
871 | Status = SendCmd (Cmd, CmdInterruptEnable, CmdArgument);\r | |
872 | if (EFI_ERROR (Status)) {\r | |
873 | DEBUG ((EFI_D_ERROR, "CMD fails. Status: %x\n", Status));\r | |
874 | return Status;\r | |
875 | }\r | |
876 | \r | |
877 | //Check for the Transfer completion.\r | |
878 | while (RetryCount < MAX_RETRY_COUNT) {\r | |
879 | //Read Status\r | |
880 | do {\r | |
881 | MmcStatus = MmioRead32 (MMCHS_STAT);\r | |
882 | } while (MmcStatus == 0);\r | |
883 | \r | |
884 | //Check if Transfer complete (TC) bit is set?\r | |
885 | if (MmcStatus & TC) {\r | |
886 | break;\r | |
887 | } else {\r | |
888 | DEBUG ((EFI_D_ERROR, "MmcStatus for TC: %x\n", MmcStatus));\r | |
889 | //Check if DEB, DCRC or DTO interrupt occured.\r | |
890 | if ((MmcStatus & DEB) | (MmcStatus & DCRC) | (MmcStatus & DTO)) {\r | |
891 | //There was an error during the data transfer.\r | |
892 | \r | |
893 | //Set SRD bit to 1 and wait until it return to 0x0.\r | |
894 | MmioOr32 (MMCHS_SYSCTL, SRD);\r | |
895 | while((MmioRead32 (MMCHS_SYSCTL) & SRD) != 0x0);\r | |
896 | \r | |
897 | DisableDmaChannel (2, DMA4_CSR_BLOCK, DMA4_CSR_ERR);\r | |
898 | DmaUnmap (BufferMap);\r | |
899 | return EFI_DEVICE_ERROR;\r | |
900 | }\r | |
901 | }\r | |
902 | RetryCount++;\r | |
903 | } \r | |
904 | \r | |
905 | DisableDmaChannel (2, DMA4_CSR_BLOCK, DMA4_CSR_ERR);\r | |
906 | Status = DmaUnmap (BufferMap);\r | |
907 | \r | |
908 | if (RetryCount == MAX_RETRY_COUNT) {\r | |
909 | DEBUG ((EFI_D_ERROR, "TransferBlockData timed out.\n"));\r | |
910 | return EFI_TIMEOUT;\r | |
911 | }\r | |
912 | \r | |
913 | return Status;\r | |
914 | }\r | |
915 | \r | |
916 | \r | |
917 | EFI_STATUS\r | |
918 | TransferBlock (\r | |
919 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
920 | IN UINTN Lba,\r | |
921 | IN OUT VOID *Buffer,\r | |
922 | IN OPERATION_TYPE OperationType\r | |
923 | )\r | |
924 | {\r | |
925 | EFI_STATUS Status;\r | |
926 | UINTN MmcStatus;\r | |
927 | UINTN RetryCount = 0;\r | |
928 | UINTN Cmd = 0;\r | |
929 | UINTN CmdInterruptEnable = 0;\r | |
930 | UINTN CmdArgument = 0;\r | |
931 | \r | |
932 | \r | |
933 | //Populate the command information based on the operation type.\r | |
934 | if (OperationType == READ) {\r | |
935 | Cmd = CMD17; //Single block read\r | |
936 | CmdInterruptEnable = CMD18_INT_EN;\r | |
937 | } else if (OperationType == WRITE) { \r | |
938 | Cmd = CMD24; //Single block write\r | |
939 | CmdInterruptEnable = CMD24_INT_EN;\r | |
940 | }\r | |
941 | \r | |
942 | //Set command argument based on the card access mode (Byte mode or Block mode)\r | |
943 | if (gCardInfo.OCRData.AccessMode & BIT1) {\r | |
944 | CmdArgument = Lba;\r | |
945 | } else {\r | |
946 | CmdArgument = Lba * This->Media->BlockSize;\r | |
947 | }\r | |
948 | \r | |
949 | //Send Command.\r | |
950 | Status = SendCmd (Cmd, CmdInterruptEnable, CmdArgument);\r | |
951 | if (EFI_ERROR(Status)) {\r | |
952 | DEBUG ((EFI_D_ERROR, "CMD fails. Status: %x\n", Status));\r | |
953 | return Status;\r | |
954 | }\r | |
955 | \r | |
956 | //Read or Write data.\r | |
957 | if (OperationType == READ) {\r | |
958 | Status = ReadBlockData (This, Buffer);\r | |
959 | if (EFI_ERROR(Status)) {\r | |
960 | DEBUG((EFI_D_ERROR, "ReadBlockData fails.\n"));\r | |
961 | return Status;\r | |
962 | }\r | |
963 | } else if (OperationType == WRITE) {\r | |
964 | Status = WriteBlockData (This, Buffer);\r | |
965 | if (EFI_ERROR(Status)) {\r | |
966 | DEBUG((EFI_D_ERROR, "WriteBlockData fails.\n"));\r | |
967 | return Status;\r | |
968 | }\r | |
969 | }\r | |
970 | \r | |
971 | //Check for the Transfer completion.\r | |
972 | while (RetryCount < MAX_RETRY_COUNT) {\r | |
973 | //Read Status\r | |
974 | do {\r | |
975 | MmcStatus = MmioRead32 (MMCHS_STAT);\r | |
976 | } while (MmcStatus == 0);\r | |
977 | \r | |
978 | //Check if Transfer complete (TC) bit is set?\r | |
979 | if (MmcStatus & TC) {\r | |
980 | break;\r | |
981 | } else {\r | |
982 | DEBUG ((EFI_D_ERROR, "MmcStatus for TC: %x\n", MmcStatus));\r | |
983 | //Check if DEB, DCRC or DTO interrupt occured.\r | |
984 | if ((MmcStatus & DEB) | (MmcStatus & DCRC) | (MmcStatus & DTO)) {\r | |
985 | //There was an error during the data transfer.\r | |
986 | \r | |
987 | //Set SRD bit to 1 and wait until it return to 0x0.\r | |
988 | MmioOr32 (MMCHS_SYSCTL, SRD);\r | |
989 | while((MmioRead32 (MMCHS_SYSCTL) & SRD) != 0x0);\r | |
990 | \r | |
991 | return EFI_DEVICE_ERROR;\r | |
992 | }\r | |
993 | }\r | |
994 | RetryCount++;\r | |
995 | } \r | |
996 | \r | |
997 | if (RetryCount == MAX_RETRY_COUNT) {\r | |
998 | DEBUG ((EFI_D_ERROR, "TransferBlockData timed out.\n"));\r | |
999 | return EFI_TIMEOUT;\r | |
1000 | }\r | |
1001 | \r | |
1002 | return EFI_SUCCESS;\r | |
1003 | }\r | |
1004 | \r | |
1005 | BOOLEAN\r | |
1006 | CardPresent (\r | |
1007 | VOID\r | |
1008 | )\r | |
1009 | {\r | |
1010 | EFI_STATUS Status;\r | |
1011 | UINT8 Data;\r | |
1012 | \r | |
1013 | //\r | |
1014 | // Card detect is a GPIO0 on the TPS65950\r | |
1015 | //\r | |
1016 | Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID2, GPIODATAIN1), 1, &Data);\r | |
1017 | if (EFI_ERROR (Status)) {\r | |
1018 | return FALSE;\r | |
1019 | }\r | |
1020 | \r | |
1021 | if ((Data & CARD_DETECT_BIT) == CARD_DETECT_BIT) {\r | |
1022 | // No Card present\r | |
1023 | return FALSE;\r | |
1024 | } else {\r | |
1025 | return TRUE;\r | |
1026 | }\r | |
1027 | }\r | |
1028 | \r | |
1029 | EFI_STATUS\r | |
1030 | DetectCard (\r | |
1031 | VOID\r | |
1032 | )\r | |
1033 | {\r | |
1034 | EFI_STATUS Status;\r | |
1035 | \r | |
1036 | if (!CardPresent ()) {\r | |
1037 | return EFI_NO_MEDIA;\r | |
1038 | }\r | |
1039 | \r | |
1040 | //Initialize MMC host controller clocks.\r | |
1041 | Status = InitializeMMCHS ();\r | |
1042 | if (EFI_ERROR(Status)) {\r | |
1043 | DEBUG ((EFI_D_ERROR, "Initialize MMC host controller fails. Status: %x\n", Status));\r | |
1044 | return Status;\r | |
1045 | }\r | |
1046 | \r | |
1047 | //Software reset of the MMCHS host controller.\r | |
1048 | MmioWrite32 (MMCHS_SYSCONFIG, SOFTRESET);\r | |
1049 | gBS->Stall(1000);\r | |
1050 | while ((MmioRead32 (MMCHS_SYSSTATUS) & RESETDONE_MASK) != RESETDONE);\r | |
1051 | \r | |
1052 | //Soft reset for all.\r | |
1053 | MmioWrite32 (MMCHS_SYSCTL, SRA);\r | |
1054 | gBS->Stall(1000);\r | |
1055 | while ((MmioRead32 (MMCHS_SYSCTL) & SRA) != 0x0);\r | |
1056 | \r | |
1057 | //Voltage capabilities initialization. Activate VS18 and VS30.\r | |
1058 | MmioOr32 (MMCHS_CAPA, (VS30 | VS18));\r | |
1059 | \r | |
1060 | //Wakeup configuration\r | |
1061 | MmioOr32 (MMCHS_SYSCONFIG, ENAWAKEUP);\r | |
1062 | MmioOr32 (MMCHS_HCTL, IWE);\r | |
1063 | \r | |
1064 | //MMCHS Controller default initialization\r | |
1065 | MmioOr32 (MMCHS_CON, (OD | DW8_1_4_BIT | CEATA_OFF));\r | |
1066 | \r | |
1067 | MmioWrite32 (MMCHS_HCTL, (SDVS_3_0_V | DTW_1_BIT | SDBP_OFF));\r | |
1068 | \r | |
1069 | //Enable internal clock\r | |
1070 | MmioOr32 (MMCHS_SYSCTL, ICE);\r | |
1071 | \r | |
1072 | //Set the clock frequency to 80KHz.\r | |
1073 | UpdateMMCHSClkFrequency (CLKD_80KHZ);\r | |
1074 | \r | |
1075 | //Enable SD bus power.\r | |
1076 | MmioOr32 (MMCHS_HCTL, (SDBP_ON));\r | |
1077 | \r | |
1078 | //Poll till SD bus power bit is set.\r | |
1079 | while ((MmioRead32 (MMCHS_HCTL) & SDBP_MASK) != SDBP_ON);\r | |
1080 | \r | |
1081 | //Card idenfication\r | |
1082 | Status = PerformCardIdenfication ();\r | |
1083 | if (EFI_ERROR(Status)) {\r | |
1084 | DEBUG ((EFI_D_ERROR, "No MMC/SD card detected.\n"));\r | |
1085 | return Status;\r | |
1086 | }\r | |
1087 | \r | |
1088 | //Get CSD (Card specific data) for the detected card.\r | |
1089 | Status = GetCardSpecificData();\r | |
1090 | if (EFI_ERROR(Status)) {\r | |
1091 | return Status;\r | |
1092 | }\r | |
1093 | \r | |
1094 | //Configure the card in data transfer mode.\r | |
1095 | Status = PerformCardConfiguration();\r | |
1096 | if (EFI_ERROR(Status)) {\r | |
1097 | return Status;\r | |
1098 | }\r | |
1099 | \r | |
1100 | //Patch the Media structure.\r | |
1101 | gMMCHSMedia.LastBlock = (gCardInfo.NumBlocks - 1);\r | |
1102 | gMMCHSMedia.BlockSize = gCardInfo.BlockSize;\r | |
1103 | gMMCHSMedia.ReadOnly = (MmioRead32 (GPIO1_BASE + GPIO_DATAIN) & BIT23) == BIT23;\r | |
1104 | gMMCHSMedia.MediaPresent = TRUE; \r | |
1105 | gMMCHSMedia.MediaId++; \r | |
1106 | \r | |
1107 | DEBUG ((EFI_D_INFO, "SD Card Media Change on Handle 0x%08x\n", gImageHandle));\r | |
1108 | \r | |
1109 | return Status;\r | |
1110 | }\r | |
1111 | \r | |
1112 | #define MAX_MMCHS_TRANSFER_SIZE 0x4000\r | |
1113 | \r | |
1114 | EFI_STATUS\r | |
1115 | SdReadWrite (\r | |
1116 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
1117 | IN UINTN Lba, \r | |
1118 | OUT VOID *Buffer, \r | |
1119 | IN UINTN BufferSize,\r | |
1120 | IN OPERATION_TYPE OperationType\r | |
1121 | )\r | |
1122 | {\r | |
1123 | EFI_STATUS Status = EFI_SUCCESS;\r | |
1124 | UINTN RetryCount = 0;\r | |
1125 | UINTN BlockCount;\r | |
1126 | UINTN BytesToBeTranferedThisPass = 0;\r | |
1127 | UINTN BytesRemainingToBeTransfered;\r | |
1128 | EFI_TPL OldTpl;\r | |
1129 | \r | |
1130 | BOOLEAN Update;\r | |
1131 | \r | |
1132 | \r | |
1133 | \r | |
1134 | Update = FALSE;\r | |
1135 | \r | |
1136 | if (gMediaChange) {\r | |
1137 | Update = TRUE;\r | |
1138 | Status = DetectCard ();\r | |
1139 | if (EFI_ERROR (Status)) {\r | |
1140 | // We detected a removal\r | |
1141 | gMMCHSMedia.MediaPresent = FALSE;\r | |
1142 | gMMCHSMedia.LastBlock = 0;\r | |
1143 | gMMCHSMedia.BlockSize = 512; // Should be zero but there is a bug in DiskIo\r | |
1144 | gMMCHSMedia.ReadOnly = FALSE; \r | |
1145 | }\r | |
1146 | gMediaChange = FALSE;\r | |
1147 | } else if (!gMMCHSMedia.MediaPresent) {\r | |
1148 | Status = EFI_NO_MEDIA;\r | |
1149 | goto Done;\r | |
1150 | }\r | |
1151 | \r | |
1152 | if (Update) {\r | |
1153 | DEBUG ((EFI_D_INFO, "SD Card ReinstallProtocolInterface ()\n"));\r | |
1154 | gBS->ReinstallProtocolInterface (\r | |
1155 | gImageHandle,\r | |
1156 | &gEfiBlockIoProtocolGuid,\r | |
1157 | &gBlockIo,\r | |
1158 | &gBlockIo\r | |
1159 | );\r | |
1160 | return EFI_MEDIA_CHANGED;\r | |
1161 | }\r | |
1162 | \r | |
1163 | if (EFI_ERROR (Status)) {\r | |
1164 | goto Done;\r | |
1165 | }\r | |
1166 | \r | |
1167 | if (Buffer == NULL) {\r | |
1168 | Status = EFI_INVALID_PARAMETER;\r | |
1169 | goto Done;\r | |
1170 | }\r | |
1171 | \r | |
1172 | if (Lba > This->Media->LastBlock) {\r | |
1173 | Status = EFI_INVALID_PARAMETER;\r | |
1174 | goto Done;\r | |
1175 | }\r | |
1176 | \r | |
1177 | if ((BufferSize % This->Media->BlockSize) != 0) {\r | |
1178 | Status = EFI_BAD_BUFFER_SIZE;\r | |
1179 | goto Done;\r | |
1180 | }\r | |
1181 | \r | |
1182 | //Check if the data lines are not in use.\r | |
1183 | while ((RetryCount++ < MAX_RETRY_COUNT) && ((MmioRead32 (MMCHS_PSTATE) & DATI_MASK) != DATI_ALLOWED));\r | |
1184 | if (RetryCount == MAX_RETRY_COUNT) {\r | |
1185 | Status = EFI_TIMEOUT;\r | |
1186 | goto Done;\r | |
1187 | }\r | |
1188 | \r | |
1189 | OldTpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
1190 | \r | |
1191 | BytesRemainingToBeTransfered = BufferSize;\r | |
1192 | while (BytesRemainingToBeTransfered > 0) {\r | |
1193 | \r | |
1194 | if (gMediaChange) {\r | |
1195 | Status = EFI_NO_MEDIA;\r | |
1196 | DEBUG ((EFI_D_INFO, "SdReadWrite() EFI_NO_MEDIA due to gMediaChange\n"));\r | |
1197 | goto DoneRestoreTPL;\r | |
1198 | }\r | |
1199 | \r | |
1200 | // Turn OFF DMA path until it is debugged\r | |
1201 | // BytesToBeTranferedThisPass = (BytesToBeTranferedThisPass >= MAX_MMCHS_TRANSFER_SIZE) ? MAX_MMCHS_TRANSFER_SIZE : BytesRemainingToBeTransfered;\r | |
1202 | BytesToBeTranferedThisPass = This->Media->BlockSize;\r | |
1203 | \r | |
1204 | BlockCount = BytesToBeTranferedThisPass/This->Media->BlockSize;\r | |
1205 | \r | |
1206 | if (BlockCount > 1) {\r | |
1207 | Status = DmaBlocks (This, Lba, Buffer, BlockCount, OperationType);\r | |
1208 | } else {\r | |
1209 | //Transfer a block worth of data.\r | |
1210 | Status = TransferBlock (This, Lba, Buffer, OperationType);\r | |
1211 | }\r | |
1212 | \r | |
1213 | if (EFI_ERROR(Status)) {\r | |
1214 | DEBUG ((EFI_D_ERROR, "TransferBlockData fails. %x\n", Status));\r | |
1215 | goto DoneRestoreTPL;\r | |
1216 | }\r | |
1217 | \r | |
1218 | BytesRemainingToBeTransfered -= BytesToBeTranferedThisPass;\r | |
1219 | Lba += BlockCount;\r | |
1220 | Buffer = (UINT8 *)Buffer + This->Media->BlockSize;\r | |
1221 | }\r | |
1222 | \r | |
1223 | DoneRestoreTPL:\r | |
1224 | \r | |
1225 | gBS->RestoreTPL (OldTpl);\r | |
1226 | \r | |
1227 | Done:\r | |
1228 | \r | |
1229 | return Status;\r | |
1230 | \r | |
1231 | }\r | |
1232 | \r | |
1233 | \r | |
1234 | /**\r | |
1235 | \r | |
1236 | Reset the Block Device.\r | |
1237 | \r | |
1238 | \r | |
1239 | \r | |
1240 | @param This Indicates a pointer to the calling context.\r | |
1241 | \r | |
1242 | @param ExtendedVerification Driver may perform diagnostics on reset.\r | |
1243 | \r | |
1244 | \r | |
1245 | \r | |
1246 | @retval EFI_SUCCESS The device was reset.\r | |
1247 | \r | |
1248 | @retval EFI_DEVICE_ERROR The device is not functioning properly and could\r | |
1249 | \r | |
1250 | not be reset.\r | |
1251 | \r | |
1252 | \r | |
1253 | \r | |
1254 | **/\r | |
1255 | EFI_STATUS\r | |
1256 | EFIAPI\r | |
1257 | MMCHSReset (\r | |
1258 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
1259 | IN BOOLEAN ExtendedVerification\r | |
1260 | )\r | |
1261 | {\r | |
1262 | return EFI_SUCCESS; \r | |
1263 | }\r | |
1264 | \r | |
1265 | \r | |
1266 | /**\r | |
1267 | \r | |
1268 | Read BufferSize bytes from Lba into Buffer.\r | |
1269 | \r | |
1270 | \r | |
1271 | \r | |
1272 | @param This Indicates a pointer to the calling context.\r | |
1273 | \r | |
1274 | @param MediaId Id of the media, changes every time the media is replaced.\r | |
1275 | \r | |
1276 | @param Lba The starting Logical Block Address to read from\r | |
1277 | \r | |
1278 | @param BufferSize Size of Buffer, must be a multiple of device block size.\r | |
1279 | \r | |
1280 | @param Buffer A pointer to the destination buffer for the data. The caller is\r | |
1281 | \r | |
1282 | responsible for either having implicit or explicit ownership of the buffer.\r | |
1283 | \r | |
1284 | \r | |
1285 | \r | |
1286 | @retval EFI_SUCCESS The data was read correctly from the device.\r | |
1287 | \r | |
1288 | @retval EFI_DEVICE_ERROR The device reported an error while performing the read.\r | |
1289 | \r | |
1290 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
1291 | \r | |
1292 | @retval EFI_MEDIA_CHANGED The MediaId does not matched the current device.\r | |
1293 | \r | |
1294 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r | |
1295 | \r | |
1296 | @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid, \r | |
1297 | \r | |
1298 | or the buffer is not on proper alignment.\r | |
1299 | \r | |
1300 | EFI_STATUS\r | |
1301 | \r | |
1302 | **/\r | |
1303 | EFI_STATUS\r | |
1304 | EFIAPI\r | |
1305 | MMCHSReadBlocks (\r | |
1306 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
1307 | IN UINT32 MediaId,\r | |
1308 | IN EFI_LBA Lba,\r | |
1309 | IN UINTN BufferSize,\r | |
1310 | OUT VOID *Buffer\r | |
1311 | )\r | |
1312 | {\r | |
1313 | EFI_STATUS Status;\r | |
1314 | \r | |
1315 | //Perform Read operation.\r | |
1316 | Status = SdReadWrite (This, (UINTN)Lba, Buffer, BufferSize, READ);\r | |
1317 | \r | |
1318 | return Status;\r | |
1319 | \r | |
1320 | }\r | |
1321 | \r | |
1322 | \r | |
1323 | /**\r | |
1324 | \r | |
1325 | Write BufferSize bytes from Lba into Buffer.\r | |
1326 | \r | |
1327 | \r | |
1328 | \r | |
1329 | @param This Indicates a pointer to the calling context.\r | |
1330 | \r | |
1331 | @param MediaId The media ID that the write request is for.\r | |
1332 | \r | |
1333 | @param Lba The starting logical block address to be written. The caller is\r | |
1334 | \r | |
1335 | responsible for writing to only legitimate locations.\r | |
1336 | \r | |
1337 | @param BufferSize Size of Buffer, must be a multiple of device block size.\r | |
1338 | \r | |
1339 | @param Buffer A pointer to the source buffer for the data.\r | |
1340 | \r | |
1341 | \r | |
1342 | \r | |
1343 | @retval EFI_SUCCESS The data was written correctly to the device.\r | |
1344 | \r | |
1345 | @retval EFI_WRITE_PROTECTED The device can not be written to.\r | |
1346 | \r | |
1347 | @retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r | |
1348 | \r | |
1349 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
1350 | \r | |
1351 | @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r | |
1352 | \r | |
1353 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r | |
1354 | \r | |
1355 | @retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid, \r | |
1356 | \r | |
1357 | or the buffer is not on proper alignment.\r | |
1358 | \r | |
1359 | \r | |
1360 | \r | |
1361 | **/\r | |
1362 | EFI_STATUS\r | |
1363 | EFIAPI\r | |
1364 | MMCHSWriteBlocks (\r | |
1365 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
1366 | IN UINT32 MediaId,\r | |
1367 | IN EFI_LBA Lba,\r | |
1368 | IN UINTN BufferSize,\r | |
1369 | IN VOID *Buffer\r | |
1370 | )\r | |
1371 | {\r | |
1372 | EFI_STATUS Status;\r | |
1373 | \r | |
1374 | //Perform write operation.\r | |
1375 | Status = SdReadWrite (This, (UINTN)Lba, Buffer, BufferSize, WRITE);\r | |
1376 | \r | |
1377 | \r | |
1378 | return Status;\r | |
1379 | \r | |
1380 | }\r | |
1381 | \r | |
1382 | \r | |
1383 | /**\r | |
1384 | \r | |
1385 | Flush the Block Device.\r | |
1386 | \r | |
1387 | \r | |
1388 | \r | |
1389 | @param This Indicates a pointer to the calling context.\r | |
1390 | \r | |
1391 | \r | |
1392 | \r | |
1393 | @retval EFI_SUCCESS All outstanding data was written to the device\r | |
1394 | \r | |
1395 | @retval EFI_DEVICE_ERROR The device reported an error while writting back the data\r | |
1396 | \r | |
1397 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
1398 | \r | |
1399 | \r | |
1400 | \r | |
1401 | **/\r | |
1402 | EFI_STATUS\r | |
1403 | EFIAPI\r | |
1404 | MMCHSFlushBlocks (\r | |
1405 | IN EFI_BLOCK_IO_PROTOCOL *This\r | |
1406 | )\r | |
1407 | {\r | |
1408 | return EFI_SUCCESS;\r | |
1409 | }\r | |
1410 | \r | |
1411 | \r | |
1412 | EFI_BLOCK_IO_PROTOCOL gBlockIo = {\r | |
1413 | EFI_BLOCK_IO_INTERFACE_REVISION, // Revision\r | |
1414 | &gMMCHSMedia, // *Media\r | |
1415 | MMCHSReset, // Reset\r | |
1416 | MMCHSReadBlocks, // ReadBlocks\r | |
1417 | MMCHSWriteBlocks, // WriteBlocks\r | |
1418 | MMCHSFlushBlocks // FlushBlocks\r | |
1419 | };\r | |
1420 | \r | |
1421 | \r | |
1422 | /**\r | |
1423 | \r | |
1424 | Timer callback to convert card present hardware into a boolean that indicates\r | |
1425 | \r | |
1426 | a media change event has happened. If you just check the GPIO you could see \r | |
1427 | \r | |
1428 | card 1 and then check again after card 1 was removed and card 2 was inserted\r | |
1429 | \r | |
1430 | and you would still see media present. Thus you need the timer tick to catch\r | |
1431 | \r | |
1432 | the toggle event.\r | |
1433 | \r | |
1434 | \r | |
1435 | \r | |
1436 | @param Event Event whose notification function is being invoked.\r | |
1437 | \r | |
1438 | @param Context The pointer to the notification function's context,\r | |
1439 | \r | |
1440 | which is implementation-dependent. Not used.\r | |
1441 | \r | |
1442 | \r | |
1443 | \r | |
1444 | **/\r | |
1445 | VOID\r | |
1446 | EFIAPI\r | |
1447 | TimerCallback (\r | |
1448 | IN EFI_EVENT Event,\r | |
1449 | IN VOID *Context\r | |
1450 | )\r | |
1451 | {\r | |
1452 | BOOLEAN Present;\r | |
1453 | \r | |
1454 | Present = CardPresent ();\r | |
1455 | if (gMMCHSMedia.MediaPresent) {\r | |
1456 | if (!Present && !gMediaChange) {\r | |
1457 | gMediaChange = TRUE;\r | |
1458 | }\r | |
1459 | } else {\r | |
1460 | if (Present && !gMediaChange) {\r | |
1461 | gMediaChange = TRUE; \r | |
1462 | }\r | |
1463 | }\r | |
1464 | }\r | |
1465 | \r | |
1466 | \r | |
1467 | EFI_STATUS\r | |
1468 | EFIAPI\r | |
1469 | MMCHSInitialize (\r | |
1470 | IN EFI_HANDLE ImageHandle,\r | |
1471 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
1472 | )\r | |
1473 | {\r | |
1474 | EFI_STATUS Status;\r | |
1475 | \r | |
1476 | Status = gBS->LocateProtocol (&gEmbeddedExternalDeviceProtocolGuid, NULL, (VOID **)&gTPS65950);\r | |
1477 | ASSERT_EFI_ERROR(Status);\r | |
1478 | \r | |
1479 | ZeroMem (&gCardInfo, sizeof (CARD_INFO));\r | |
1480 | \r | |
1481 | Status = gBS->CreateEvent (EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_CALLBACK, TimerCallback, NULL, &gTimerEvent);\r | |
1482 | ASSERT_EFI_ERROR (Status);\r | |
1483 | \r | |
1484 | Status = gBS->SetTimer (gTimerEvent, TimerPeriodic, FixedPcdGet32 (PcdMmchsTimerFreq100NanoSeconds)); \r | |
1485 | ASSERT_EFI_ERROR (Status);\r | |
1486 | \r | |
1487 | //Publish BlockIO.\r | |
1488 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
1489 | &ImageHandle, \r | |
1490 | &gEfiBlockIoProtocolGuid, &gBlockIo, \r | |
1491 | &gEfiDevicePathProtocolGuid, &gMmcHsDevicePath,\r | |
1492 | NULL\r | |
1493 | );\r | |
1494 | return Status;\r | |
1495 | }\r |