MmcIdentification.c 25 KB

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  1. /** @file
  2. *
  3. * Copyright (c) 2011-2015, ARM Limited. All rights reserved.
  4. *
  5. * This program and the accompanying materials
  6. * are licensed and made available under the terms and conditions of the BSD License
  7. * which accompanies this distribution. The full text of the license may be found at
  8. * http://opensource.org/licenses/bsd-license.php
  9. *
  10. * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11. * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12. *
  13. **/
  14. #include <Library/BaseMemoryLib.h>
  15. #include <Library/MemoryAllocationLib.h>
  16. #include <Library/TimerLib.h>
  17. #include "Mmc.h"
  18. typedef union {
  19. UINT32 Raw;
  20. OCR Ocr;
  21. } OCR_RESPONSE;
  22. #define MAX_RETRY_COUNT 1000
  23. #define CMD_RETRY_COUNT 20
  24. #define RCA_SHIFT_OFFSET 16
  25. #define EMMC_CARD_SIZE 512
  26. #define EMMC_ECSD_SIZE_OFFSET 53
  27. #define EXTCSD_BUS_WIDTH 183
  28. #define EXTCSD_HS_TIMING 185
  29. #define EMMC_TIMING_BACKWARD 0
  30. #define EMMC_TIMING_HS 1
  31. #define EMMC_TIMING_HS200 2
  32. #define EMMC_TIMING_HS400 3
  33. #define EMMC_BUS_WIDTH_1BIT 0
  34. #define EMMC_BUS_WIDTH_4BIT 1
  35. #define EMMC_BUS_WIDTH_8BIT 2
  36. #define EMMC_BUS_WIDTH_DDR_4BIT 5
  37. #define EMMC_BUS_WIDTH_DDR_8BIT 6
  38. #define EMMC_SWITCH_ERROR (1 << 7)
  39. #define SD_BUS_WIDTH_1BIT (1 << 0)
  40. #define SD_BUS_WIDTH_4BIT (1 << 2)
  41. #define SD_CCC_SWITCH (1 << 10)
  42. #define DEVICE_STATE(x) (((x) >> 9) & 0xf)
  43. typedef enum _EMMC_DEVICE_STATE {
  44. EMMC_IDLE_STATE = 0,
  45. EMMC_READY_STATE,
  46. EMMC_IDENT_STATE,
  47. EMMC_STBY_STATE,
  48. EMMC_TRAN_STATE,
  49. EMMC_DATA_STATE,
  50. EMMC_RCV_STATE,
  51. EMMC_PRG_STATE,
  52. EMMC_DIS_STATE,
  53. EMMC_BTST_STATE,
  54. EMMC_SLP_STATE
  55. } EMMC_DEVICE_STATE;
  56. UINT32 mEmmcRcaCount = 0;
  57. STATIC
  58. EFI_STATUS
  59. EFIAPI
  60. EmmcGetDeviceState (
  61. IN MMC_HOST_INSTANCE *MmcHostInstance,
  62. OUT EMMC_DEVICE_STATE *State
  63. )
  64. {
  65. EFI_MMC_HOST_PROTOCOL *Host;
  66. EFI_STATUS Status;
  67. UINT32 Data, RCA;
  68. if (State == NULL) {
  69. return EFI_INVALID_PARAMETER;
  70. }
  71. Host = MmcHostInstance->MmcHost;
  72. RCA = MmcHostInstance->CardInfo.RCA << RCA_SHIFT_OFFSET;
  73. Status = Host->SendCommand (Host, MMC_CMD13, RCA);
  74. if (EFI_ERROR (Status)) {
  75. DEBUG ((EFI_D_ERROR, "EmmcGetDeviceState(): Failed to get card status, Status=%r.\n", Status));
  76. return Status;
  77. }
  78. Status = Host->ReceiveResponse (Host, MMC_RESPONSE_TYPE_R1, &Data);
  79. if (EFI_ERROR (Status)) {
  80. DEBUG ((EFI_D_ERROR, "EmmcGetDeviceState(): Failed to get response of CMD13, Status=%r.\n", Status));
  81. return Status;
  82. }
  83. if (Data & EMMC_SWITCH_ERROR) {
  84. DEBUG ((EFI_D_ERROR, "EmmcGetDeviceState(): Failed to switch expected mode, Status=%r.\n", Status));
  85. return EFI_DEVICE_ERROR;
  86. }
  87. *State = DEVICE_STATE(Data);
  88. return EFI_SUCCESS;
  89. }
  90. STATIC
  91. EFI_STATUS
  92. EFIAPI
  93. EmmcSetEXTCSD (
  94. IN MMC_HOST_INSTANCE *MmcHostInstance,
  95. UINT32 ExtCmdIndex,
  96. UINT32 Value
  97. )
  98. {
  99. EFI_MMC_HOST_PROTOCOL *Host;
  100. EMMC_DEVICE_STATE State;
  101. EFI_STATUS Status;
  102. UINT32 Argument;
  103. Host = MmcHostInstance->MmcHost;
  104. Argument = EMMC_CMD6_ARG_ACCESS(3) | EMMC_CMD6_ARG_INDEX(ExtCmdIndex) |
  105. EMMC_CMD6_ARG_VALUE(Value) | EMMC_CMD6_ARG_CMD_SET(1);
  106. Status = Host->SendCommand (Host, MMC_CMD6, Argument);
  107. if (EFI_ERROR (Status)) {
  108. DEBUG ((EFI_D_ERROR, "EmmcSetEXTCSD(): Failed to send CMD6, Status=%r.\n", Status));
  109. return Status;
  110. }
  111. // Make sure device exiting prog mode
  112. do {
  113. Status = EmmcGetDeviceState (MmcHostInstance, &State);
  114. if (EFI_ERROR (Status)) {
  115. DEBUG ((EFI_D_ERROR, "EmmcSetEXTCSD(): Failed to get device state, Status=%r.\n", Status));
  116. return Status;
  117. }
  118. } while (State == EMMC_PRG_STATE);
  119. return EFI_SUCCESS;
  120. }
  121. STATIC
  122. EFI_STATUS
  123. EFIAPI
  124. EmmcIdentificationMode (
  125. IN MMC_HOST_INSTANCE *MmcHostInstance,
  126. IN OCR_RESPONSE Response
  127. )
  128. {
  129. EFI_MMC_HOST_PROTOCOL *Host;
  130. EFI_BLOCK_IO_MEDIA *Media;
  131. EFI_STATUS Status;
  132. EMMC_DEVICE_STATE State;
  133. UINT32 RCA;
  134. Host = MmcHostInstance->MmcHost;
  135. Media = MmcHostInstance->BlockIo.Media;
  136. // Fetch card identity register
  137. Status = Host->SendCommand (Host, MMC_CMD2, 0);
  138. if (EFI_ERROR (Status)) {
  139. DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): Failed to send CMD2, Status=%r.\n", Status));
  140. return Status;
  141. }
  142. Status = Host->ReceiveResponse (Host, MMC_RESPONSE_TYPE_R2, (UINT32 *)&(MmcHostInstance->CardInfo.CIDData));
  143. if (EFI_ERROR (Status)) {
  144. DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): CID retrieval error, Status=%r.\n", Status));
  145. return Status;
  146. }
  147. // Assign a relative address value to the card
  148. MmcHostInstance->CardInfo.RCA = ++mEmmcRcaCount; // TODO: might need a more sophisticated way of doing this
  149. RCA = MmcHostInstance->CardInfo.RCA << RCA_SHIFT_OFFSET;
  150. Status = Host->SendCommand (Host, MMC_CMD3, RCA);
  151. if (EFI_ERROR (Status)) {
  152. DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): RCA set error, Status=%r.\n", Status));
  153. return Status;
  154. }
  155. // Fetch card specific data
  156. Status = Host->SendCommand (Host, MMC_CMD9, RCA);
  157. if (EFI_ERROR (Status)) {
  158. DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): Failed to send CMD9, Status=%r.\n", Status));
  159. return Status;
  160. }
  161. Status = Host->ReceiveResponse (Host, MMC_RESPONSE_TYPE_R2, (UINT32 *)&(MmcHostInstance->CardInfo.CSDData));
  162. if (EFI_ERROR (Status)) {
  163. DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): CSD retrieval error, Status=%r.\n", Status));
  164. return Status;
  165. }
  166. // Select the card
  167. Status = Host->SendCommand (Host, MMC_CMD7, RCA);
  168. if (EFI_ERROR (Status)) {
  169. DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): Card selection error, Status=%r.\n", Status));
  170. }
  171. if (MMC_HOST_HAS_SETIOS(Host)) {
  172. // Set 1-bit bus width
  173. Status = Host->SetIos (Host, 0, 1, EMMCBACKWARD);
  174. if (EFI_ERROR (Status)) {
  175. DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): Set 1-bit bus width error, Status=%r.\n", Status));
  176. return Status;
  177. }
  178. // Set 1-bit bus width for EXTCSD
  179. Status = EmmcSetEXTCSD (MmcHostInstance, EXTCSD_BUS_WIDTH, EMMC_BUS_WIDTH_1BIT);
  180. if (EFI_ERROR (Status)) {
  181. DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): Set extcsd bus width error, Status=%r.\n", Status));
  182. return Status;
  183. }
  184. }
  185. // Fetch ECSD
  186. MmcHostInstance->CardInfo.ECSDData = AllocatePages (EFI_SIZE_TO_PAGES (sizeof (ECSD)));
  187. if (MmcHostInstance->CardInfo.ECSDData == NULL) {
  188. return EFI_OUT_OF_RESOURCES;
  189. }
  190. Status = Host->SendCommand (Host, MMC_CMD8, 0);
  191. if (EFI_ERROR (Status)) {
  192. DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): ECSD fetch error, Status=%r.\n", Status));
  193. }
  194. Status = Host->ReadBlockData (Host, 0, 512, (UINT32 *)MmcHostInstance->CardInfo.ECSDData);
  195. if (EFI_ERROR (Status)) {
  196. DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): ECSD read error, Status=%r.\n", Status));
  197. goto FreePageExit;
  198. }
  199. // Make sure device exiting data mode
  200. do {
  201. Status = EmmcGetDeviceState (MmcHostInstance, &State);
  202. if (EFI_ERROR (Status)) {
  203. DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): Failed to get device state, Status=%r.\n", Status));
  204. goto FreePageExit;
  205. }
  206. } while (State == EMMC_DATA_STATE);
  207. // Set up media
  208. Media->BlockSize = EMMC_CARD_SIZE; // 512-byte support is mandatory for eMMC cards
  209. Media->MediaId = MmcHostInstance->CardInfo.CIDData.PSN;
  210. Media->ReadOnly = MmcHostInstance->CardInfo.CSDData.PERM_WRITE_PROTECT;
  211. Media->LogicalBlocksPerPhysicalBlock = 1;
  212. Media->IoAlign = 4;
  213. // Compute last block using bits [215:212] of the ECSD
  214. Media->LastBlock = MmcHostInstance->CardInfo.ECSDData->SECTOR_COUNT - 1; // eMMC isn't supposed to report this for
  215. // Cards <2GB in size, but the model does.
  216. // Setup card type
  217. MmcHostInstance->CardInfo.CardType = EMMC_CARD;
  218. return EFI_SUCCESS;
  219. FreePageExit:
  220. FreePages (MmcHostInstance->CardInfo.ECSDData, EFI_SIZE_TO_PAGES (sizeof (ECSD)));
  221. return Status;
  222. }
  223. STATIC
  224. EFI_STATUS
  225. InitializeEmmcDevice (
  226. IN MMC_HOST_INSTANCE *MmcHostInstance
  227. )
  228. {
  229. EFI_MMC_HOST_PROTOCOL *Host;
  230. EFI_STATUS Status = EFI_SUCCESS;
  231. ECSD *ECSDData;
  232. UINT32 BusClockFreq, Idx, BusMode;
  233. UINT32 TimingMode[4] = {EMMCHS52DDR1V2, EMMCHS52DDR1V8, EMMCHS52, EMMCHS26};
  234. Host = MmcHostInstance->MmcHost;
  235. ECSDData = MmcHostInstance->CardInfo.ECSDData;
  236. if (ECSDData->DEVICE_TYPE == EMMCBACKWARD)
  237. return EFI_SUCCESS;
  238. if (!MMC_HOST_HAS_SETIOS(Host)) {
  239. return EFI_SUCCESS;
  240. }
  241. Status = EmmcSetEXTCSD (MmcHostInstance, EXTCSD_HS_TIMING, EMMC_TIMING_HS);
  242. if (EFI_ERROR (Status)) {
  243. DEBUG ((DEBUG_ERROR, "InitializeEmmcDevice(): Failed to switch high speed mode, Status:%r.\n", Status));
  244. return Status;
  245. }
  246. for (Idx = 0; Idx < 4; Idx++) {
  247. switch (TimingMode[Idx]) {
  248. case EMMCHS52DDR1V2:
  249. case EMMCHS52DDR1V8:
  250. case EMMCHS52:
  251. BusClockFreq = 52000000;
  252. break;
  253. case EMMCHS26:
  254. BusClockFreq = 26000000;
  255. break;
  256. default:
  257. return EFI_UNSUPPORTED;
  258. }
  259. Status = Host->SetIos (Host, BusClockFreq, 8, TimingMode[Idx]);
  260. if (!EFI_ERROR (Status)) {
  261. switch (TimingMode[Idx]) {
  262. case EMMCHS52DDR1V2:
  263. case EMMCHS52DDR1V8:
  264. BusMode = EMMC_BUS_WIDTH_DDR_8BIT;
  265. break;
  266. case EMMCHS52:
  267. case EMMCHS26:
  268. BusMode = EMMC_BUS_WIDTH_8BIT;
  269. break;
  270. default:
  271. return EFI_UNSUPPORTED;
  272. }
  273. Status = EmmcSetEXTCSD (MmcHostInstance, EXTCSD_BUS_WIDTH, BusMode);
  274. if (EFI_ERROR (Status)) {
  275. DEBUG ((DEBUG_ERROR, "InitializeEmmcDevice(): Failed to set EXTCSD bus width, Status:%r\n", Status));
  276. }
  277. return Status;
  278. }
  279. }
  280. return Status;
  281. }
  282. STATIC
  283. EFI_STATUS
  284. InitializeSdMmcDevice (
  285. IN MMC_HOST_INSTANCE *MmcHostInstance
  286. )
  287. {
  288. UINT32 CmdArg;
  289. UINT32 Response[4];
  290. UINT32 Buffer[128];
  291. UINTN BlockSize;
  292. UINTN CardSize;
  293. UINTN NumBlocks;
  294. BOOLEAN CccSwitch;
  295. SCR Scr;
  296. EFI_STATUS Status;
  297. EFI_MMC_HOST_PROTOCOL *MmcHost;
  298. MmcHost = MmcHostInstance->MmcHost;
  299. // Send a command to get Card specific data
  300. CmdArg = MmcHostInstance->CardInfo.RCA << 16;
  301. Status = MmcHost->SendCommand (MmcHost, MMC_CMD9, CmdArg);
  302. if (EFI_ERROR (Status)) {
  303. DEBUG((EFI_D_ERROR, "InitializeSdMmcDevice(MMC_CMD9): Error, Status=%r\n", Status));
  304. return Status;
  305. }
  306. // Read Response
  307. Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_CSD, Response);
  308. if (EFI_ERROR (Status)) {
  309. DEBUG((EFI_D_ERROR, "InitializeSdMmcDevice(): Failed to receive CSD, Status=%r\n", Status));
  310. return Status;
  311. }
  312. PrintCSD (Response);
  313. if (MMC_CSD_GET_CCC(Response) & SD_CCC_SWITCH) {
  314. CccSwitch = TRUE;
  315. } else {
  316. CccSwitch = FALSE;
  317. }
  318. if (MmcHostInstance->CardInfo.CardType == SD_CARD_2_HIGH) {
  319. CardSize = HC_MMC_CSD_GET_DEVICESIZE (Response);
  320. NumBlocks = ((CardSize + 1) * 1024);
  321. BlockSize = 1 << MMC_CSD_GET_READBLLEN (Response);
  322. } else {
  323. CardSize = MMC_CSD_GET_DEVICESIZE (Response);
  324. NumBlocks = (CardSize + 1) * (1 << (MMC_CSD_GET_DEVICESIZEMULT (Response) + 2));
  325. BlockSize = 1 << MMC_CSD_GET_READBLLEN (Response);
  326. }
  327. // For >=2G card, BlockSize may be 1K, but the transfer size is 512 bytes.
  328. if (BlockSize > 512) {
  329. NumBlocks = MultU64x32 (NumBlocks, BlockSize / 512);
  330. BlockSize = 512;
  331. }
  332. MmcHostInstance->BlockIo.Media->LastBlock = (NumBlocks - 1);
  333. MmcHostInstance->BlockIo.Media->BlockSize = BlockSize;
  334. MmcHostInstance->BlockIo.Media->ReadOnly = MmcHost->IsReadOnly (MmcHost);
  335. MmcHostInstance->BlockIo.Media->MediaPresent = TRUE;
  336. MmcHostInstance->BlockIo.Media->MediaId++;
  337. CmdArg = MmcHostInstance->CardInfo.RCA << 16;
  338. Status = MmcHost->SendCommand (MmcHost, MMC_CMD7, CmdArg);
  339. if (EFI_ERROR (Status)) {
  340. DEBUG((EFI_D_ERROR, "InitializeSdMmcDevice(MMC_CMD7): Error and Status = %r\n", Status));
  341. return Status;
  342. }
  343. Status = MmcHost->SendCommand (MmcHost, MMC_CMD55, CmdArg);
  344. if (EFI_ERROR (Status)) {
  345. DEBUG ((EFI_D_ERROR, "%a(MMC_CMD55): Error and Status = %r\n", Status));
  346. return Status;
  347. }
  348. Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_R1, Response);
  349. if (EFI_ERROR (Status)) {
  350. DEBUG ((EFI_D_ERROR, "%a(MMC_CMD55): Error and Status = %r\n", Status));
  351. return Status;
  352. }
  353. if ((Response[0] & MMC_STATUS_APP_CMD) == 0) {
  354. return EFI_SUCCESS;
  355. }
  356. /* SCR */
  357. Status = MmcHost->SendCommand (MmcHost, MMC_ACMD51, 0);
  358. if (EFI_ERROR (Status)) {
  359. DEBUG ((EFI_D_ERROR, "%a(MMC_ACMD51): Error and Status = %r\n", __func__, Status));
  360. return Status;
  361. } else {
  362. Status = MmcHost->ReadBlockData (MmcHost, 0, 8, Buffer);
  363. if (EFI_ERROR (Status)) {
  364. DEBUG ((EFI_D_ERROR, "%a(MMC_ACMD51): ReadBlockData Error and Status = %r\n", __func__, Status));
  365. return Status;
  366. }
  367. CopyMem (&Scr, Buffer, 8);
  368. if (Scr.SD_SPEC == 2) {
  369. if (Scr.SD_SPEC3 == 1) {
  370. if (Scr.SD_SPEC4 == 1) {
  371. DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 4.xx\n"));
  372. } else {
  373. DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 3.0x\n"));
  374. }
  375. } else {
  376. if (Scr.SD_SPEC4 == 0) {
  377. DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 2.0\n"));
  378. } else {
  379. DEBUG ((EFI_D_ERROR, "Found invalid SD Card\n"));
  380. }
  381. }
  382. } else {
  383. if ((Scr.SD_SPEC3 == 0) && (Scr.SD_SPEC4 == 0)) {
  384. if (Scr.SD_SPEC == 1) {
  385. DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 1.10\n"));
  386. } else {
  387. DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 1.0\n"));
  388. }
  389. } else {
  390. DEBUG ((EFI_D_ERROR, "Found invalid SD Card\n"));
  391. }
  392. }
  393. }
  394. if (CccSwitch) {
  395. /* SD Switch, Mode:1, Group:0, Value:1 */
  396. CmdArg = 1 << 31 | 0x00FFFFFF;
  397. CmdArg &= ~(0xF << (0 * 4));
  398. CmdArg |= 1 << (0 * 4);
  399. Status = MmcHost->SendCommand (MmcHost, MMC_CMD6, CmdArg);
  400. if (EFI_ERROR (Status)) {
  401. DEBUG ((EFI_D_ERROR, "%a(MMC_CMD6): Error and Status = %r\n", Status));
  402. return Status;
  403. } else {
  404. Status = MmcHost->ReadBlockData (MmcHost, 0, 64, Buffer);
  405. if (EFI_ERROR (Status)) {
  406. DEBUG ((EFI_D_ERROR, "%a(MMC_CMD6): ReadBlockData Error and Status = %r\n", Status));
  407. return Status;
  408. }
  409. }
  410. }
  411. if (Scr.SD_BUS_WIDTHS & SD_BUS_WIDTH_4BIT) {
  412. CmdArg = MmcHostInstance->CardInfo.RCA << 16;
  413. Status = MmcHost->SendCommand (MmcHost, MMC_CMD55, CmdArg);
  414. if (EFI_ERROR (Status)) {
  415. DEBUG ((EFI_D_ERROR, "%a(MMC_CMD55): Error and Status = %r\n", Status));
  416. return Status;
  417. }
  418. /* Width: 4 */
  419. Status = MmcHost->SendCommand (MmcHost, MMC_CMD6, 2);
  420. if (EFI_ERROR (Status)) {
  421. DEBUG ((EFI_D_ERROR, "%a(MMC_CMD6): Error and Status = %r\n", Status));
  422. return Status;
  423. }
  424. }
  425. if (MMC_HOST_HAS_SETIOS(MmcHost)) {
  426. Status = MmcHost->SetIos (MmcHost, 26 * 1000 * 1000, 4, EMMCBACKWARD);
  427. if (EFI_ERROR (Status)) {
  428. DEBUG ((EFI_D_ERROR, "%a(SetIos): Error and Status = %r\n", Status));
  429. return Status;
  430. }
  431. }
  432. return EFI_SUCCESS;
  433. }
  434. STATIC
  435. EFI_STATUS
  436. EFIAPI
  437. MmcIdentificationMode (
  438. IN MMC_HOST_INSTANCE *MmcHostInstance
  439. )
  440. {
  441. EFI_STATUS Status;
  442. UINT32 Response[4];
  443. UINTN Timeout;
  444. UINTN CmdArg;
  445. BOOLEAN IsHCS;
  446. EFI_MMC_HOST_PROTOCOL *MmcHost;
  447. OCR_RESPONSE OcrResponse;
  448. MmcHost = MmcHostInstance->MmcHost;
  449. CmdArg = 0;
  450. IsHCS = FALSE;
  451. if (MmcHost == NULL) {
  452. return EFI_INVALID_PARAMETER;
  453. }
  454. // We can get into this function if we restart the identification mode
  455. if (MmcHostInstance->State == MmcHwInitializationState) {
  456. // Initialize the MMC Host HW
  457. Status = MmcNotifyState (MmcHostInstance, MmcHwInitializationState);
  458. if (EFI_ERROR (Status)) {
  459. DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcHwInitializationState, Status=%r.\n", Status));
  460. return Status;
  461. }
  462. }
  463. Status = MmcHost->SendCommand (MmcHost, MMC_CMD0, 0);
  464. if (EFI_ERROR (Status)) {
  465. DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD0): Error, Status=%r.\n", Status));
  466. return Status;
  467. }
  468. Status = MmcNotifyState (MmcHostInstance, MmcIdleState);
  469. if (EFI_ERROR (Status)) {
  470. DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcIdleState, Status=%r.\n", Status));
  471. return Status;
  472. }
  473. // Send CMD1 to get OCR (MMC)
  474. // This command only valid for MMC and eMMC
  475. Timeout = MAX_RETRY_COUNT;
  476. do {
  477. Status = MmcHost->SendCommand (MmcHost, MMC_CMD1, EMMC_CMD1_CAPACITY_GREATER_THAN_2GB);
  478. if (EFI_ERROR (Status))
  479. break;
  480. Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_OCR, (UINT32 *)&OcrResponse);
  481. if (EFI_ERROR (Status)) {
  482. DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Failed to receive OCR, Status=%r.\n", Status));
  483. return Status;
  484. }
  485. Timeout--;
  486. } while (!OcrResponse.Ocr.PowerUp && (Timeout > 0));
  487. if (Status == EFI_SUCCESS) {
  488. if (!OcrResponse.Ocr.PowerUp) {
  489. DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD1): Card initialisation failure, Status=%r.\n", Status));
  490. return EFI_DEVICE_ERROR;
  491. }
  492. OcrResponse.Ocr.PowerUp = 0;
  493. if (OcrResponse.Raw == EMMC_CMD1_CAPACITY_GREATER_THAN_2GB) {
  494. MmcHostInstance->CardInfo.OCRData.AccessMode = BIT1;
  495. }
  496. else {
  497. MmcHostInstance->CardInfo.OCRData.AccessMode = 0x0;
  498. }
  499. // Check whether MMC or eMMC
  500. if (OcrResponse.Raw == EMMC_CMD1_CAPACITY_GREATER_THAN_2GB ||
  501. OcrResponse.Raw == EMMC_CMD1_CAPACITY_LESS_THAN_2GB) {
  502. return EmmcIdentificationMode (MmcHostInstance, OcrResponse);
  503. }
  504. }
  505. // Are we using SDIO ?
  506. Status = MmcHost->SendCommand (MmcHost, MMC_CMD5, 0);
  507. if (Status == EFI_SUCCESS) {
  508. DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD5): Error - SDIO not supported, Status=%r.\n", Status));
  509. return EFI_UNSUPPORTED;
  510. }
  511. // Check which kind of card we are using. Ver2.00 or later SD Memory Card (PL180 is SD v1.1)
  512. CmdArg = (0x0UL << 12 | BIT8 | 0xCEUL << 0);
  513. Status = MmcHost->SendCommand (MmcHost, MMC_CMD8, CmdArg);
  514. if (Status == EFI_SUCCESS) {
  515. DEBUG ((EFI_D_ERROR, "Card is SD2.0 => Supports high capacity\n"));
  516. IsHCS = TRUE;
  517. Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_R7, Response);
  518. if (EFI_ERROR (Status)) {
  519. DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Failed to receive response to CMD8, Status=%r.\n", Status));
  520. return Status;
  521. }
  522. PrintResponseR1 (Response[0]);
  523. // Check if it is valid response
  524. if (Response[0] != CmdArg) {
  525. DEBUG ((EFI_D_ERROR, "The Card is not usable\n"));
  526. return EFI_UNSUPPORTED;
  527. }
  528. } else {
  529. DEBUG ((EFI_D_ERROR, "Not a SD2.0 Card\n"));
  530. }
  531. // We need to wait for the MMC or SD card is ready => (gCardInfo.OCRData.PowerUp == 1)
  532. Timeout = MAX_RETRY_COUNT;
  533. while (Timeout > 0) {
  534. // SD Card or MMC Card ? CMD55 indicates to the card that the next command is an application specific command
  535. Status = MmcHost->SendCommand (MmcHost, MMC_CMD55, 0);
  536. if (Status == EFI_SUCCESS) {
  537. DEBUG ((EFI_D_INFO, "Card should be SD\n"));
  538. if (IsHCS) {
  539. MmcHostInstance->CardInfo.CardType = SD_CARD_2;
  540. } else {
  541. MmcHostInstance->CardInfo.CardType = SD_CARD;
  542. }
  543. // Note: The first time CmdArg will be zero
  544. CmdArg = ((UINTN *) &(MmcHostInstance->CardInfo.OCRData))[0];
  545. if (IsHCS) {
  546. CmdArg |= BIT30;
  547. }
  548. Status = MmcHost->SendCommand (MmcHost, MMC_ACMD41, CmdArg);
  549. if (!EFI_ERROR (Status)) {
  550. Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_OCR, Response);
  551. if (EFI_ERROR (Status)) {
  552. DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Failed to receive OCR, Status=%r.\n", Status));
  553. return Status;
  554. }
  555. ((UINT32 *) &(MmcHostInstance->CardInfo.OCRData))[0] = Response[0];
  556. }
  557. } else {
  558. DEBUG ((EFI_D_INFO, "Card should be MMC\n"));
  559. MmcHostInstance->CardInfo.CardType = MMC_CARD;
  560. Status = MmcHost->SendCommand (MmcHost, MMC_CMD1, 0x800000);
  561. if (!EFI_ERROR (Status)) {
  562. Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_OCR, Response);
  563. if (EFI_ERROR (Status)) {
  564. DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Failed to receive OCR, Status=%r.\n", Status));
  565. return Status;
  566. }
  567. ((UINT32 *) &(MmcHostInstance->CardInfo.OCRData))[0] = Response[0];
  568. }
  569. }
  570. if (!EFI_ERROR (Status)) {
  571. if (!MmcHostInstance->CardInfo.OCRData.PowerUp) {
  572. gBS->Stall (1);
  573. Timeout--;
  574. } else {
  575. if ((MmcHostInstance->CardInfo.CardType == SD_CARD_2) && (MmcHostInstance->CardInfo.OCRData.AccessMode & BIT1)) {
  576. MmcHostInstance->CardInfo.CardType = SD_CARD_2_HIGH;
  577. DEBUG ((EFI_D_ERROR, "High capacity card.\n"));
  578. }
  579. break; // The MMC/SD card is ready. Continue the Identification Mode
  580. }
  581. } else {
  582. gBS->Stall (1);
  583. Timeout--;
  584. }
  585. }
  586. if (Timeout == 0) {
  587. DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(): No Card\n"));
  588. return EFI_NO_MEDIA;
  589. } else {
  590. PrintOCR (Response[0]);
  591. }
  592. Status = MmcNotifyState (MmcHostInstance, MmcReadyState);
  593. if (EFI_ERROR (Status)) {
  594. DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcReadyState\n"));
  595. return Status;
  596. }
  597. Status = MmcHost->SendCommand (MmcHost, MMC_CMD2, 0);
  598. if (EFI_ERROR (Status)) {
  599. DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD2): Error\n"));
  600. return Status;
  601. }
  602. Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_CID, Response);
  603. if (EFI_ERROR (Status)) {
  604. DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Failed to receive CID, Status=%r.\n", Status));
  605. return Status;
  606. }
  607. PrintCID (Response);
  608. Status = MmcHost->NotifyState (MmcHost, MmcIdentificationState);
  609. if (EFI_ERROR (Status)) {
  610. DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcIdentificationState\n"));
  611. return Status;
  612. }
  613. //
  614. // Note, SD specifications say that "if the command execution causes a state change, it
  615. // will be visible to the host in the response to the next command"
  616. // The status returned for this CMD3 will be 2 - identification
  617. //
  618. CmdArg = 1;
  619. Status = MmcHost->SendCommand (MmcHost, MMC_CMD3, CmdArg);
  620. if (EFI_ERROR (Status)) {
  621. DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD3): Error\n"));
  622. return Status;
  623. }
  624. Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_RCA, Response);
  625. if (EFI_ERROR (Status)) {
  626. DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Failed to receive RCA, Status=%r.\n", Status));
  627. return Status;
  628. }
  629. PrintRCA (Response[0]);
  630. // For MMC card, RCA is assigned by CMD3 while CMD3 dumps the RCA for SD card
  631. if (MmcHostInstance->CardInfo.CardType != MMC_CARD) {
  632. MmcHostInstance->CardInfo.RCA = Response[0] >> 16;
  633. } else {
  634. MmcHostInstance->CardInfo.RCA = CmdArg;
  635. }
  636. Status = MmcNotifyState (MmcHostInstance, MmcStandByState);
  637. if (EFI_ERROR (Status)) {
  638. DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcStandByState\n"));
  639. return Status;
  640. }
  641. return EFI_SUCCESS;
  642. }
  643. EFI_STATUS
  644. InitializeMmcDevice (
  645. IN MMC_HOST_INSTANCE *MmcHostInstance
  646. )
  647. {
  648. EFI_STATUS Status;
  649. EFI_MMC_HOST_PROTOCOL *MmcHost;
  650. UINTN BlockCount;
  651. BlockCount = 1;
  652. MmcHost = MmcHostInstance->MmcHost;
  653. Status = MmcIdentificationMode (MmcHostInstance);
  654. if (EFI_ERROR (Status)) {
  655. DEBUG((EFI_D_ERROR, "InitializeMmcDevice(): Error in Identification Mode, Status=%r\n", Status));
  656. return Status;
  657. }
  658. Status = MmcNotifyState (MmcHostInstance, MmcTransferState);
  659. if (EFI_ERROR (Status)) {
  660. DEBUG((EFI_D_ERROR, "InitializeMmcDevice(): Error MmcTransferState, Status=%r\n", Status));
  661. return Status;
  662. }
  663. if (MmcHostInstance->CardInfo.CardType != EMMC_CARD) {
  664. Status = InitializeSdMmcDevice (MmcHostInstance);
  665. } else {
  666. Status = InitializeEmmcDevice (MmcHostInstance);
  667. }
  668. if (EFI_ERROR (Status)) {
  669. return Status;
  670. }
  671. // Set Block Length
  672. Status = MmcHost->SendCommand (MmcHost, MMC_CMD16, MmcHostInstance->BlockIo.Media->BlockSize);
  673. if (EFI_ERROR (Status)) {
  674. DEBUG((EFI_D_ERROR, "InitializeMmcDevice(MMC_CMD16): Error MmcHostInstance->BlockIo.Media->BlockSize: %d and Error = %r\n",
  675. MmcHostInstance->BlockIo.Media->BlockSize, Status));
  676. return Status;
  677. }
  678. // Block Count (not used). Could return an error for SD card
  679. if (MmcHostInstance->CardInfo.CardType == MMC_CARD) {
  680. Status = MmcHost->SendCommand (MmcHost, MMC_CMD23, BlockCount);
  681. if (EFI_ERROR (Status)) {
  682. DEBUG((EFI_D_ERROR, "InitializeMmcDevice(MMC_CMD23): Error, Status=%r\n", Status));
  683. return Status;
  684. }
  685. }
  686. return EFI_SUCCESS;
  687. }