MmcDxe: Adding eMMC support

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15074 6f19259b-4bc3-4df7-8a09-765794883524

4 files changed, 471 insertions, 262 deletions

diff --git a/EmbeddedPkg/Universal/MmcDxe/Mmc.h b/EmbeddedPkg/Universal/MmcDxe/Mmc.h
index 9104f60ae0..e84c3c1cdf 100644
--- a/EmbeddedPkg/Universal/MmcDxe/Mmc.h
+++ b/EmbeddedPkg/Universal/MmcDxe/Mmc.h
@@ -1,7 +1,7 @@
 /** @file

   Main Header file for the MMC DXE driver

 

-  Copyright (c) 2011-2013, ARM Limited. All rights reserved.

+  Copyright (c) 2011-2014, ARM Limited. All rights reserved.

   

   This program and the accompanying materials                          

   are licensed and made available under the terms and conditions of the BSD License         

@@ -58,6 +58,7 @@ typedef enum {
   UNKNOWN_CARD,

   MMC_CARD,              //MMC card

   MMC_CARD_HIGH,         //MMC Card with High capacity

+  EMMC_CARD,             //eMMC 4.41 card

   SD_CARD,               //SD 1.1 card

   SD_CARD_2,             //SD 2.0 or above standard card

   SD_CARD_2_HIGH         //SD 2.0 or above high capacity card

@@ -289,8 +290,15 @@ MmcFlushBlocks (
   IN EFI_BLOCK_IO_PROTOCOL  *This

   );

 

-EFI_STATUS InitializeMmcDevice (

-  IN  MMC_HOST_INSTANCE   *MmcHost

+EFI_STATUS

+MmcNotifyState (

+  IN MMC_HOST_INSTANCE      *MmcHostInstance,

+  IN MMC_STATE               State

+  );

+

+EFI_STATUS

+InitializeMmcDevice (

+  IN  MMC_HOST_INSTANCE     *MmcHost

   );

 

 VOID

diff --git a/EmbeddedPkg/Universal/MmcDxe/MmcBlockIo.c b/EmbeddedPkg/Universal/MmcDxe/MmcBlockIo.c
index 4b9b64e46f..04c82613d5 100644
--- a/EmbeddedPkg/Universal/MmcDxe/MmcBlockIo.c
+++ b/EmbeddedPkg/Universal/MmcDxe/MmcBlockIo.c
@@ -1,6 +1,6 @@
 /** @file

 *

-*  Copyright (c) 2011-2013, ARM Limited. All rights reserved.

+*  Copyright (c) 2011-2014, ARM Limited. All rights reserved.

 *

 *  This program and the accompanying materials

 *  are licensed and made available under the terms and conditions of the BSD License

@@ -17,9 +17,6 @@
 

 #include "Mmc.h"

 

-#define MAX_RETRY_COUNT  1000

-#define CMD_RETRY_COUNT  20

-

 EFI_STATUS

 MmcNotifyState (

   IN MMC_HOST_INSTANCE *MmcHostInstance,

@@ -67,259 +64,6 @@ MmcGetCardStatus (
 

 EFI_STATUS

 EFIAPI

-MmcIdentificationMode (

-  IN MMC_HOST_INSTANCE     *MmcHostInstance

-  )

-{

-  EFI_STATUS              Status;

-  UINT32                  Response[4];

-  UINTN                   Timeout;

-  UINTN                   CmdArg;

-  BOOLEAN                 IsHCS;

-  EFI_MMC_HOST_PROTOCOL   *MmcHost;

-

-  MmcHost = MmcHostInstance->MmcHost;

-  CmdArg = 0;

-  IsHCS = FALSE;

-

-  if (MmcHost == NULL) {

-    return EFI_INVALID_PARAMETER;

-  }

-

-  // We can get into this function if we restart the identification mode

-  if (MmcHostInstance->State == MmcHwInitializationState) {

-    // Initialize the MMC Host HW

-    Status = MmcNotifyState (MmcHostInstance, MmcHwInitializationState);

-    if (EFI_ERROR (Status)) {

-      DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcHwInitializationState\n"));

-      return Status;

-    }

-  }

-

-  Status = MmcHost->SendCommand (MmcHost, MMC_CMD0, 0);

-  if (EFI_ERROR (Status)) {

-    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD0): Error\n"));

-    return Status;

-  }

-

-  Status = MmcNotifyState (MmcHostInstance, MmcIdleState);

-  if (EFI_ERROR (Status)) {

-    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcIdleState\n"));

-    return Status;

-  }

-

-  // Are we using SDIO ?

-  Status = MmcHost->SendCommand (MmcHost, MMC_CMD5, 0);

-  if (Status == EFI_SUCCESS) {

-    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD5): Error - SDIO not supported.\n"));

-    return EFI_UNSUPPORTED;

-  }

-

-  // Check which kind of card we are using. Ver2.00 or later SD Memory Card (PL180 is SD v1.1)

-  CmdArg = (0x0UL << 12 | BIT8 | 0xCEUL << 0);

-  Status = MmcHost->SendCommand (MmcHost, MMC_CMD8, CmdArg);

-  if (Status == EFI_SUCCESS) {

-    DEBUG ((EFI_D_ERROR, "Card is SD2.0 => Supports high capacity\n"));

-    IsHCS = TRUE;

-    MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_R7, Response);

-    PrintResponseR1 (Response[0]);

-    //check if it is valid response

-    if (Response[0] != CmdArg) {

-      DEBUG ((EFI_D_ERROR, "The Card is not usable\n"));

-      return EFI_UNSUPPORTED;

-    }

-  } else {

-    DEBUG ((EFI_D_ERROR, "Not a SD2.0 Card\n"));

-  }

-

-  // We need to wait for the MMC or SD card is ready => (gCardInfo.OCRData.PowerUp == 1)

-  Timeout = MAX_RETRY_COUNT;

-  while (Timeout > 0) {

-    // SD Card or MMC Card ? CMD55 indicates to the card that the next command is an application specific command

-    Status = MmcHost->SendCommand (MmcHost, MMC_CMD55, 0);

-    if (Status == EFI_SUCCESS) {

-      DEBUG ((EFI_D_INFO, "Card should be SD\n"));

-      if (IsHCS) {

-        MmcHostInstance->CardInfo.CardType = SD_CARD_2;

-      } else {

-        MmcHostInstance->CardInfo.CardType = SD_CARD;

-      }

-

-      // Note: The first time CmdArg will be zero

-      CmdArg = ((UINTN *) &(MmcHostInstance->CardInfo.OCRData))[0];

-      if (IsHCS) {

-        CmdArg |= BIT30;

-      }

-      Status = MmcHost->SendCommand (MmcHost, MMC_ACMD41, CmdArg);

-      if (!EFI_ERROR (Status)) {

-        MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_OCR, Response);

-        ((UINT32 *) &(MmcHostInstance->CardInfo.OCRData))[0] = Response[0];

-      }

-    } else {

-      DEBUG ((EFI_D_INFO, "Card should be MMC\n"));

-      MmcHostInstance->CardInfo.CardType = MMC_CARD;

-

-      Status = MmcHost->SendCommand (MmcHost, MMC_CMD1, 0x800000);

-      if (!EFI_ERROR (Status)) {

-        MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_OCR, Response);

-        ((UINT32 *) &(MmcHostInstance->CardInfo.OCRData))[0] = Response[0];

-      }

-    }

-

-    if (!EFI_ERROR (Status)) {

-      if (!MmcHostInstance->CardInfo.OCRData.PowerUp) {

-        MicroSecondDelay (1);

-        Timeout--;

-      } else {

-        if ((MmcHostInstance->CardInfo.CardType == SD_CARD_2) && (MmcHostInstance->CardInfo.OCRData.AccessMode & BIT1)) {

-          MmcHostInstance->CardInfo.CardType = SD_CARD_2_HIGH;

-          DEBUG ((EFI_D_ERROR, "High capacity card.\n"));

-        }

-        break;  // The MMC/SD card is ready. Continue the Identification Mode

-      }

-    } else {

-      MicroSecondDelay (1);

-      Timeout--;

-    }

-  }

-

-  if (Timeout == 0) {

-    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(): No Card\n"));

-    return EFI_NO_MEDIA;

-  } else {

-    PrintOCR (Response[0]);

-  }

-

-  Status = MmcNotifyState (MmcHostInstance, MmcReadyState);

-  if (EFI_ERROR (Status)) {

-    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcReadyState\n"));

-    return Status;

-  }

-

-  Status = MmcHost->SendCommand (MmcHost, MMC_CMD2, 0);

-  if (EFI_ERROR (Status)) {

-    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD2): Error\n"));

-    return Status;

-  }

-  MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_CID, Response);

-  PrintCID (Response);

-

-  Status = MmcNotifyState (MmcHostInstance, MmcIdentificationState);

-  if (EFI_ERROR (Status)) {

-    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcIdentificationState\n"));

-    return Status;

-  }

-

-  //

-  // Note, SD specifications say that "if the command execution causes a state change, it

-  // will be visible to the host in the response to the next command"

-  // The status returned for this CMD3 will be 2 - identification

-  //

-  CmdArg = 1;

-  Status = MmcHost->SendCommand (MmcHost, MMC_CMD3, CmdArg);

-  if (EFI_ERROR (Status)) {

-    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD3): Error\n"));

-    return Status;

-  }

-

-  MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_RCA, Response);

-  PrintRCA (Response[0]);

-

-  // For MMC card, RCA is assigned by CMD3 while CMD3 dumps the RCA for SD card

-  if (MmcHostInstance->CardInfo.CardType != MMC_CARD) {

-    MmcHostInstance->CardInfo.RCA = Response[0] >> 16;

-  } else {

-    MmcHostInstance->CardInfo.RCA = CmdArg;

-  }

-

-  Status = MmcNotifyState (MmcHostInstance, MmcStandByState);

-  if (EFI_ERROR (Status)) {

-    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcStandByState\n"));

-    return Status;

-  }

-

-  return EFI_SUCCESS;

-}

-

-EFI_STATUS InitializeMmcDevice (

-  IN  MMC_HOST_INSTANCE   *MmcHostInstance

-  )

-{

-  UINT32                  Response[4];

-  EFI_STATUS              Status;

-  UINTN                   CardSize, NumBlocks, BlockSize, CmdArg;

-  EFI_MMC_HOST_PROTOCOL   *MmcHost;

-  UINTN                   BlockCount;

-

-  BlockCount = 1;

-  MmcHost = MmcHostInstance->MmcHost;

-

-  MmcIdentificationMode (MmcHostInstance);

-

-  //Send a command to get Card specific data

-  CmdArg = MmcHostInstance->CardInfo.RCA << 16;

-  Status = MmcHost->SendCommand (MmcHost, MMC_CMD9, CmdArg);

-  if (EFI_ERROR (Status)) {

-    DEBUG((EFI_D_ERROR, "InitializeMmcDevice(MMC_CMD9): Error, Status=%r\n", Status));

-    return Status;

-  }

-  //Read Response

-  MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_CSD, Response);

-  PrintCSD (Response);

-

-  if (MmcHostInstance->CardInfo.CardType == SD_CARD_2_HIGH) {

-    CardSize = HC_MMC_CSD_GET_DEVICESIZE (Response);

-    NumBlocks = ((CardSize + 1) * 1024);

-    BlockSize = 1 << MMC_CSD_GET_READBLLEN (Response);

-  } else {

-    CardSize = MMC_CSD_GET_DEVICESIZE (Response);

-    NumBlocks = (CardSize + 1) * (1 << (MMC_CSD_GET_DEVICESIZEMULT (Response) + 2));

-    BlockSize = 1 << MMC_CSD_GET_READBLLEN (Response);

-  }

-

-  //For >=2G card, BlockSize may be 1K, but the transfer size is 512 bytes.

-  if (BlockSize > 512) {

-    NumBlocks = MultU64x32 (NumBlocks, BlockSize/512);

-    BlockSize = 512;

-  }

-

-  MmcHostInstance->BlockIo.Media->LastBlock    = (NumBlocks - 1);

-  MmcHostInstance->BlockIo.Media->BlockSize    = BlockSize;

-  MmcHostInstance->BlockIo.Media->ReadOnly     = MmcHost->IsReadOnly (MmcHost);

-  MmcHostInstance->BlockIo.Media->MediaPresent = TRUE;

-  MmcHostInstance->BlockIo.Media->MediaId++;

-

-  CmdArg = MmcHostInstance->CardInfo.RCA << 16;

-  Status = MmcHost->SendCommand (MmcHost, MMC_CMD7, CmdArg);

-  if (EFI_ERROR (Status)) {

-    DEBUG((EFI_D_ERROR, "InitializeMmcDevice(MMC_CMD7): Error and Status = %r\n", Status));

-    return Status;

-  }

-

-  Status = MmcNotifyState (MmcHostInstance, MmcTransferState);

-  if (EFI_ERROR (Status)) {

-    DEBUG((EFI_D_ERROR, "InitializeMmcDevice(): Error MmcTransferState\n"));

-    return Status;

-  }

-

-  // Set Block Length

-  Status = MmcHost->SendCommand (MmcHost, MMC_CMD16, MmcHostInstance->BlockIo.Media->BlockSize);

-  if (EFI_ERROR (Status)) {

-    DEBUG((EFI_D_ERROR, "InitializeMmcDevice(MMC_CMD16): Error MmcHostInstance->BlockIo.Media->BlockSize: %d and Error = %r\n",

-                        MmcHostInstance->BlockIo.Media->BlockSize, Status));

-    return Status;

-  }

-

-  // Block Count (not used). Could return an error for SD card

-  if (MmcHostInstance->CardInfo.CardType == MMC_CARD) {

-    MmcHost->SendCommand (MmcHost, MMC_CMD23, BlockCount);

-  }

-

-  return EFI_SUCCESS;

-}

-

-EFI_STATUS

-EFIAPI

 MmcReset (

   IN EFI_BLOCK_IO_PROTOCOL    *This,

   IN BOOLEAN                  ExtendedVerification

diff --git a/EmbeddedPkg/Universal/MmcDxe/MmcDxe.inf b/EmbeddedPkg/Universal/MmcDxe/MmcDxe.inf
index 80e15bb850..069b8c766c 100644
--- a/EmbeddedPkg/Universal/MmcDxe/MmcDxe.inf
+++ b/EmbeddedPkg/Universal/MmcDxe/MmcDxe.inf
@@ -1,7 +1,7 @@
 #/** @file

 #  Build file for the MMC DXE driver

 #

-#  Copyright (c) 2011-2013, ARM Limited. All rights reserved.

+#  Copyright (c) 2011-2014, ARM Limited. All rights reserved.

 #  

 #  This program and the accompanying materials                          

 #  are licensed and made available under the terms and conditions of the BSD License         

@@ -26,6 +26,7 @@
   ComponentName.c

   Mmc.c

   MmcBlockIo.c

+  MmcIdentification.c

   MmcDebug.c

   Diagnostics.c

 

@@ -48,4 +49,4 @@
   gEfiDriverDiagnostics2ProtocolGuid

   

 [Depex]

-  TRUE
\ No newline at end of file
+  TRUE


diff --git a/EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c b/EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c
new file mode 100644
index 0000000000..32efe19c31
--- /dev/null
+++ b/EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c
@@ -0,0 +1,456 @@
+/** @file

+*

+*  Copyright (c) 2011-2014, ARM Limited. All rights reserved.

+*

+*  This program and the accompanying materials

+*  are licensed and made available under the terms and conditions of the BSD License

+*  which accompanies this distribution.  The full text of the license may be found at

+*  http://opensource.org/licenses/bsd-license.php

+*

+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,

+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

+*

+**/

+

+#include <Library/TimerLib.h>

+

+#include "Mmc.h"

+

+typedef union {

+  UINT32 Raw;

+  OCR    Ocr;

+} OCR_RESPONSE;

+

+#define MAX_RETRY_COUNT         1000

+#define CMD_RETRY_COUNT         20

+#define RCA_SHIFT_OFFSET        16

+#define EMMC_CARD_SIZE          512

+#define EMMC_ECSD_SIZE_OFFSET   53

+

+UINT32 mEmmcRcaCount = 0;

+

+STATIC

+EFI_STATUS

+EFIAPI

+EmmcIdentificationMode (

+  IN MMC_HOST_INSTANCE     *MmcHostInstance,

+  IN OCR_RESPONSE           Response

+  )

+{

+  EFI_MMC_HOST_PROTOCOL *Host;

+  EFI_BLOCK_IO_MEDIA    *Media;

+  EFI_STATUS Status;

+  UINT32     RCA;

+  UINT32     ECSD[128];

+

+  Host  = MmcHostInstance->MmcHost;

+  Media = MmcHostInstance->BlockIo.Media;

+

+  // Fetch card identity register

+  Status = Host->SendCommand (Host, MMC_CMD2, 0);

+  if (EFI_ERROR (Status)) {

+    DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): Failed to send CMD2, Status=%r.\n", Status));

+    return Status;

+  }

+

+  Status = Host->ReceiveResponse (Host, MMC_RESPONSE_TYPE_R2, (UINT32 *)&(MmcHostInstance->CardInfo.CIDData));

+  if (EFI_ERROR (Status)) {

+    DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): CID retrieval error, Status=%r.\n", Status));

+    return Status;

+  }

+

+  // Assign a relative address value to the card

+  MmcHostInstance->CardInfo.RCA = ++mEmmcRcaCount; // TODO: might need a more sophisticated way of doing this

+  RCA = MmcHostInstance->CardInfo.RCA << RCA_SHIFT_OFFSET;

+  Status = Host->SendCommand (Host, MMC_CMD3, RCA);

+  if (EFI_ERROR (Status)) {

+    DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): RCA set error, Status=%r.\n", Status));

+    return Status;

+  }

+

+  // Fetch card specific data

+  Status = Host->SendCommand (Host, MMC_CMD9, RCA);

+  if (EFI_ERROR (Status)) {

+    DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): Failed to send CMD9, Status=%r.\n", Status));

+    return Status;

+  }

+

+  Status = Host->ReceiveResponse (Host, MMC_RESPONSE_TYPE_R2, (UINT32 *)&(MmcHostInstance->CardInfo.CSDData));

+  if (EFI_ERROR (Status)) {

+    DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): CSD retrieval error, Status=%r.\n", Status));

+    return Status;

+  }

+

+  // Select the card

+  Status = Host->SendCommand (Host, MMC_CMD7, RCA);

+  if (EFI_ERROR (Status)) {

+    DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): Card selection error, Status=%r.\n", Status));

+  }

+

+  // Fetch ECSD

+  Status = Host->SendCommand (Host, MMC_CMD8, RCA);

+  if (EFI_ERROR (Status)) {

+    DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): ECSD fetch error, Status=%r.\n", Status));

+  }

+

+  Status = Host->ReadBlockData (Host, 0, 512, ECSD);

+  if (EFI_ERROR (Status)) {

+    DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): ECSD read error, Status=%r.\n", Status));

+    return Status;

+  }

+

+  // Set up media

+  Media->BlockSize = EMMC_CARD_SIZE; // 512-byte support is mandatory for eMMC cards

+  Media->MediaId = MmcHostInstance->CardInfo.CIDData.PSN;

+  Media->ReadOnly = MmcHostInstance->CardInfo.CSDData.PERM_WRITE_PROTECT;

+  Media->LogicalBlocksPerPhysicalBlock = 1;

+  Media->IoAlign = 4;

+  // Compute last block using bits [215:212] of the ECSD

+  Media->LastBlock = ECSD[EMMC_ECSD_SIZE_OFFSET] - 1; // eMMC isn't supposed to report this for

+  // Cards <2GB in size, but the model does.

+

+  // Setup card type

+  MmcHostInstance->CardInfo.CardType = EMMC_CARD;

+  return EFI_SUCCESS;

+}

+

+STATIC

+EFI_STATUS

+InitializeSdMmcDevice (

+  IN  MMC_HOST_INSTANCE   *MmcHostInstance

+  )

+{

+  UINT32        CmdArg;

+  UINT32        Response[4];

+  UINTN         BlockSize;

+  UINTN         CardSize;

+  UINTN         NumBlocks;

+  EFI_STATUS    Status;

+  EFI_MMC_HOST_PROTOCOL     *MmcHost;

+

+  MmcHost = MmcHostInstance->MmcHost;

+

+  // Send a command to get Card specific data

+  CmdArg = MmcHostInstance->CardInfo.RCA << 16;

+  Status = MmcHost->SendCommand (MmcHost, MMC_CMD9, CmdArg);

+  if (EFI_ERROR (Status)) {

+    DEBUG((EFI_D_ERROR, "InitializeSdMmcDevice(MMC_CMD9): Error, Status=%r\n", Status));

+    return Status;

+  }

+

+  // Read Response

+  Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_CSD, Response);

+  if (EFI_ERROR (Status)) {

+    DEBUG((EFI_D_ERROR, "InitializeSdMmcDevice(): Failed to receive CSD, Status=%r\n", Status));

+    return Status;

+  }

+  PrintCSD (Response);

+

+  if (MmcHostInstance->CardInfo.CardType == SD_CARD_2_HIGH) {

+    CardSize = HC_MMC_CSD_GET_DEVICESIZE (Response);

+    NumBlocks = ((CardSize + 1) * 1024);

+    BlockSize = 1 << MMC_CSD_GET_READBLLEN (Response);

+  } else {

+    CardSize = MMC_CSD_GET_DEVICESIZE (Response);

+    NumBlocks = (CardSize + 1) * (1 << (MMC_CSD_GET_DEVICESIZEMULT (Response) + 2));

+    BlockSize = 1 << MMC_CSD_GET_READBLLEN (Response);

+  }

+

+  // For >=2G card, BlockSize may be 1K, but the transfer size is 512 bytes.

+  if (BlockSize > 512) {

+    NumBlocks = MultU64x32 (NumBlocks, BlockSize / 512);

+    BlockSize = 512;

+  }

+

+  MmcHostInstance->BlockIo.Media->LastBlock    = (NumBlocks - 1);

+  MmcHostInstance->BlockIo.Media->BlockSize    = BlockSize;

+  MmcHostInstance->BlockIo.Media->ReadOnly     = MmcHost->IsReadOnly (MmcHost);

+  MmcHostInstance->BlockIo.Media->MediaPresent = TRUE;

+  MmcHostInstance->BlockIo.Media->MediaId++;

+

+  CmdArg = MmcHostInstance->CardInfo.RCA << 16;

+  Status = MmcHost->SendCommand (MmcHost, MMC_CMD7, CmdArg);

+  if (EFI_ERROR (Status)) {

+    DEBUG((EFI_D_ERROR, "InitializeSdMmcDevice(MMC_CMD7): Error and Status = %r\n", Status));

+    return Status;

+  }

+

+  return EFI_SUCCESS;

+}

+

+STATIC

+EFI_STATUS

+EFIAPI

+MmcIdentificationMode (

+  IN MMC_HOST_INSTANCE     *MmcHostInstance

+  )

+{

+  EFI_STATUS              Status;

+  UINT32                  Response[4];

+  UINTN                   Timeout;

+  UINTN                   CmdArg;

+  BOOLEAN                 IsHCS;

+  EFI_MMC_HOST_PROTOCOL   *MmcHost;

+  OCR_RESPONSE            OcrResponse;

+

+  MmcHost = MmcHostInstance->MmcHost;

+  CmdArg = 0;

+  IsHCS = FALSE;

+

+  if (MmcHost == NULL) {

+    return EFI_INVALID_PARAMETER;

+  }

+

+  // We can get into this function if we restart the identification mode

+  if (MmcHostInstance->State == MmcHwInitializationState) {

+    // Initialize the MMC Host HW

+    Status = MmcNotifyState (MmcHostInstance, MmcHwInitializationState);

+    if (EFI_ERROR (Status)) {

+      DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcHwInitializationState, Status=%r.\n", Status));

+      return Status;

+    }

+  }

+

+  Status = MmcHost->SendCommand (MmcHost, MMC_CMD0, 0);

+  if (EFI_ERROR (Status)) {

+    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD0): Error, Status=%r.\n", Status));

+    return Status;

+  }

+  Status = MmcNotifyState (MmcHostInstance, MmcIdleState);

+  if (EFI_ERROR (Status)) {

+    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcIdleState, Status=%r.\n", Status));

+    return Status;

+  }

+

+  // Send CMD1 to get OCR (SD / MMC)

+  Status = MmcHost->SendCommand (MmcHost, MMC_CMD1, EMMC_CMD1_CAPACITY_GREATER_THAN_2GB);

+  if (Status == EFI_SUCCESS) {

+    Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_OCR, (UINT32 *)&OcrResponse);

+    if (EFI_ERROR (Status)) {

+      DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Failed to receive OCR, Status=%r.\n", Status));

+      return Status;

+    }

+

+    if (!OcrResponse.Ocr.PowerUp) {

+      DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD1): Card initialisation failure, Status=%r.\n", Status));

+      return EFI_DEVICE_ERROR;

+    }

+    OcrResponse.Ocr.PowerUp = 0;

+    if (OcrResponse.Raw == EMMC_CMD1_CAPACITY_GREATER_THAN_2GB) {

+      MmcHostInstance->CardInfo.OCRData.AccessMode = BIT1;

+    }

+    else {

+      MmcHostInstance->CardInfo.OCRData.AccessMode = 0x0;

+    }

+    if (OcrResponse.Raw == EMMC_CMD1_CAPACITY_GREATER_THAN_2GB ||

+        OcrResponse.Raw == EMMC_CMD1_CAPACITY_LESS_THAN_2GB) {

+      return EmmcIdentificationMode (MmcHostInstance, OcrResponse);

+    }

+  } else {

+    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD1) : Failed to send command, Status=%r.\n", Status));

+    return Status;

+  }

+

+  // Are we using SDIO ?

+  Status = MmcHost->SendCommand (MmcHost, MMC_CMD5, 0);

+  if (Status == EFI_SUCCESS) {

+    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD5): Error - SDIO not supported, Status=%r.\n", Status));

+    return EFI_UNSUPPORTED;

+  }

+

+  // Check which kind of card we are using. Ver2.00 or later SD Memory Card (PL180 is SD v1.1)

+  CmdArg = (0x0UL << 12 | BIT8 | 0xCEUL << 0);

+  Status = MmcHost->SendCommand (MmcHost, MMC_CMD8, CmdArg);

+  if (Status == EFI_SUCCESS) {

+    DEBUG ((EFI_D_ERROR, "Card is SD2.0 => Supports high capacity\n"));

+    IsHCS = TRUE;

+    Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_R7, Response);

+    if (EFI_ERROR (Status)) {

+      DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Failed to receive response to CMD8, Status=%r.\n", Status));

+      return Status;

+    }

+    PrintResponseR1 (Response[0]);

+    // Check if it is valid response

+    if (Response[0] != CmdArg) {

+      DEBUG ((EFI_D_ERROR, "The Card is not usable\n"));

+      return EFI_UNSUPPORTED;

+    }

+  } else {

+    DEBUG ((EFI_D_ERROR, "Not a SD2.0 Card\n"));

+  }

+

+  // We need to wait for the MMC or SD card is ready => (gCardInfo.OCRData.PowerUp == 1)

+  Timeout = MAX_RETRY_COUNT;

+  while (Timeout > 0) {

+    // SD Card or MMC Card ? CMD55 indicates to the card that the next command is an application specific command

+    Status = MmcHost->SendCommand (MmcHost, MMC_CMD55, 0);

+    if (Status == EFI_SUCCESS) {

+      DEBUG ((EFI_D_INFO, "Card should be SD\n"));

+      if (IsHCS) {

+        MmcHostInstance->CardInfo.CardType = SD_CARD_2;

+      } else {

+        MmcHostInstance->CardInfo.CardType = SD_CARD;

+      }

+

+      // Note: The first time CmdArg will be zero

+      CmdArg = ((UINTN *) &(MmcHostInstance->CardInfo.OCRData))[0];

+      if (IsHCS) {

+        CmdArg |= BIT30;

+      }

+      Status = MmcHost->SendCommand (MmcHost, MMC_ACMD41, CmdArg);

+      if (!EFI_ERROR (Status)) {

+        Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_OCR, Response);

+        if (EFI_ERROR (Status)) {

+          DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Failed to receive OCR, Status=%r.\n", Status));

+          return Status;

+        }

+        ((UINT32 *) &(MmcHostInstance->CardInfo.OCRData))[0] = Response[0];

+      }

+    } else {

+      DEBUG ((EFI_D_INFO, "Card should be MMC\n"));

+      MmcHostInstance->CardInfo.CardType = MMC_CARD;

+

+      Status = MmcHost->SendCommand (MmcHost, MMC_CMD1, 0x800000);

+      if (!EFI_ERROR (Status)) {

+        Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_OCR, Response);

+        if (EFI_ERROR (Status)) {

+          DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Failed to receive OCR, Status=%r.\n", Status));

+          return Status;

+        }

+        ((UINT32 *) &(MmcHostInstance->CardInfo.OCRData))[0] = Response[0];

+      }

+    }

+

+    if (!EFI_ERROR (Status)) {

+      if (!MmcHostInstance->CardInfo.OCRData.PowerUp) {

+        MicroSecondDelay (1);

+        Timeout--;

+      } else {

+        if ((MmcHostInstance->CardInfo.CardType == SD_CARD_2) && (MmcHostInstance->CardInfo.OCRData.AccessMode & BIT1)) {

+          MmcHostInstance->CardInfo.CardType = SD_CARD_2_HIGH;

+          DEBUG ((EFI_D_ERROR, "High capacity card.\n"));

+        }

+        break;  // The MMC/SD card is ready. Continue the Identification Mode

+      }

+    } else {

+      MicroSecondDelay (1);

+      Timeout--;

+    }

+  }

+

+  if (Timeout == 0) {

+    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(): No Card\n"));

+    return EFI_NO_MEDIA;

+  } else {

+    PrintOCR (Response[0]);

+  }

+

+  Status = MmcNotifyState (MmcHostInstance, MmcReadyState);

+  if (EFI_ERROR (Status)) {

+    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcReadyState\n"));

+    return Status;

+  }

+

+  Status = MmcHost->SendCommand (MmcHost, MMC_CMD2, 0);

+  if (EFI_ERROR (Status)) {

+    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD2): Error\n"));

+    return Status;

+  }

+  Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_CID, Response);

+  if (EFI_ERROR (Status)) {

+    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Failed to receive CID, Status=%r.\n", Status));

+    return Status;

+  }

+

+  PrintCID (Response);

+

+  Status = MmcHost->NotifyState (MmcHost, MmcIdentificationState);

+  if (EFI_ERROR (Status)) {

+    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcIdentificationState\n"));

+    return Status;

+  }

+

+  //

+  // Note, SD specifications say that "if the command execution causes a state change, it

+  // will be visible to the host in the response to the next command"

+  // The status returned for this CMD3 will be 2 - identification

+  //

+  CmdArg = 1;

+  Status = MmcHost->SendCommand (MmcHost, MMC_CMD3, CmdArg);

+  if (EFI_ERROR (Status)) {

+    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD3): Error\n"));

+    return Status;

+  }

+

+  Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_RCA, Response);

+  if (EFI_ERROR (Status)) {

+    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Failed to receive RCA, Status=%r.\n", Status));

+    return Status;

+  }

+  PrintRCA (Response[0]);

+

+  // For MMC card, RCA is assigned by CMD3 while CMD3 dumps the RCA for SD card

+  if (MmcHostInstance->CardInfo.CardType != MMC_CARD) {

+    MmcHostInstance->CardInfo.RCA = Response[0] >> 16;

+  } else {

+    MmcHostInstance->CardInfo.RCA = CmdArg;

+  }

+  Status = MmcNotifyState (MmcHostInstance, MmcStandByState);

+  if (EFI_ERROR (Status)) {

+    DEBUG ((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcStandByState\n"));

+    return Status;

+  }

+

+  return EFI_SUCCESS;

+}

+

+EFI_STATUS

+InitializeMmcDevice (

+  IN  MMC_HOST_INSTANCE   *MmcHostInstance

+  )

+{

+  EFI_STATUS              Status;

+  EFI_MMC_HOST_PROTOCOL   *MmcHost;

+  UINTN                   BlockCount;

+

+  BlockCount = 1;

+  MmcHost = MmcHostInstance->MmcHost;

+

+  Status = MmcIdentificationMode (MmcHostInstance);

+  if (EFI_ERROR (Status)) {

+    DEBUG((EFI_D_ERROR, "InitializeMmcDevice(): Error in Identification Mode, Status=%r\n", Status));

+    return Status;

+  }

+

+  Status = MmcNotifyState (MmcHostInstance, MmcTransferState);

+  if (EFI_ERROR (Status)) {

+    DEBUG((EFI_D_ERROR, "InitializeMmcDevice(): Error MmcTransferState, Status=%r\n", Status));

+    return Status;

+  }

+

+  if (MmcHostInstance->CardInfo.CardType != EMMC_CARD) {

+    Status = InitializeSdMmcDevice (MmcHostInstance);

+    if (EFI_ERROR (Status)) {

+      return Status;

+    }

+  }

+

+  // Set Block Length

+  Status = MmcHost->SendCommand (MmcHost, MMC_CMD16, MmcHostInstance->BlockIo.Media->BlockSize);

+  if (EFI_ERROR (Status)) {

+    DEBUG((EFI_D_ERROR, "InitializeMmcDevice(MMC_CMD16): Error MmcHostInstance->BlockIo.Media->BlockSize: %d and Error = %r\n",

+                        MmcHostInstance->BlockIo.Media->BlockSize, Status));

+    return Status;

+  }

+

+  // Block Count (not used). Could return an error for SD card

+  if (MmcHostInstance->CardInfo.CardType == MMC_CARD) {

+    Status = MmcHost->SendCommand (MmcHost, MMC_CMD23, BlockCount);

+    if (EFI_ERROR (Status)) {

+      DEBUG((EFI_D_ERROR, "InitializeMmcDevice(MMC_CMD23): Error, Status=%r\n", Status));

+      return Status;

+    }

+  }

+

+  return EFI_SUCCESS;

+}