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audk/EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c

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/** @file
*
* Copyright (c) 2011-2015, 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/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#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
#define EXTCSD_BUS_WIDTH 183
#define EXTCSD_HS_TIMING 185
#define EMMC_TIMING_BACKWARD 0
#define EMMC_TIMING_HS 1
#define EMMC_TIMING_HS200 2
#define EMMC_TIMING_HS400 3
#define EMMC_BUS_WIDTH_1BIT 0
#define EMMC_BUS_WIDTH_4BIT 1
#define EMMC_BUS_WIDTH_8BIT 2
#define EMMC_BUS_WIDTH_DDR_4BIT 5
#define EMMC_BUS_WIDTH_DDR_8BIT 6
#define EMMC_SWITCH_ERROR (1 << 7)
#define SD_BUS_WIDTH_1BIT (1 << 0)
#define SD_BUS_WIDTH_4BIT (1 << 2)
#define SD_CCC_SWITCH (1 << 10)
#define DEVICE_STATE(x) (((x) >> 9) & 0xf)
typedef enum _EMMC_DEVICE_STATE {
EMMC_IDLE_STATE = 0,
EMMC_READY_STATE,
EMMC_IDENT_STATE,
EMMC_STBY_STATE,
EMMC_TRAN_STATE,
EMMC_DATA_STATE,
EMMC_RCV_STATE,
EMMC_PRG_STATE,
EMMC_DIS_STATE,
EMMC_BTST_STATE,
EMMC_SLP_STATE
} EMMC_DEVICE_STATE;
UINT32 mEmmcRcaCount = 0;
STATIC
EFI_STATUS
EFIAPI
EmmcGetDeviceState (
IN MMC_HOST_INSTANCE *MmcHostInstance,
OUT EMMC_DEVICE_STATE *State
)
{
EFI_MMC_HOST_PROTOCOL *Host;
EFI_STATUS Status;
UINT32 Data, RCA;
if (State == NULL) {
return EFI_INVALID_PARAMETER;
}
Host = MmcHostInstance->MmcHost;
RCA = MmcHostInstance->CardInfo.RCA << RCA_SHIFT_OFFSET;
Status = Host->SendCommand (Host, MMC_CMD13, RCA);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "EmmcGetDeviceState(): Failed to get card status, Status=%r.\n", Status));
return Status;
}
Status = Host->ReceiveResponse (Host, MMC_RESPONSE_TYPE_R1, &Data);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "EmmcGetDeviceState(): Failed to get response of CMD13, Status=%r.\n", Status));
return Status;
}
if (Data & EMMC_SWITCH_ERROR) {
DEBUG ((EFI_D_ERROR, "EmmcGetDeviceState(): Failed to switch expected mode, Status=%r.\n", Status));
return EFI_DEVICE_ERROR;
}
*State = DEVICE_STATE(Data);
return EFI_SUCCESS;
}
STATIC
EFI_STATUS
EFIAPI
EmmcSetEXTCSD (
IN MMC_HOST_INSTANCE *MmcHostInstance,
UINT32 ExtCmdIndex,
UINT32 Value
)
{
EFI_MMC_HOST_PROTOCOL *Host;
EMMC_DEVICE_STATE State;
EFI_STATUS Status;
UINT32 Argument;
Host = MmcHostInstance->MmcHost;
Argument = EMMC_CMD6_ARG_ACCESS(3) | EMMC_CMD6_ARG_INDEX(ExtCmdIndex) |
EMMC_CMD6_ARG_VALUE(Value) | EMMC_CMD6_ARG_CMD_SET(1);
Status = Host->SendCommand (Host, MMC_CMD6, Argument);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "EmmcSetEXTCSD(): Failed to send CMD6, Status=%r.\n", Status));
return Status;
}
// Make sure device exiting prog mode
do {
Status = EmmcGetDeviceState (MmcHostInstance, &State);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "EmmcSetEXTCSD(): Failed to get device state, Status=%r.\n", Status));
return Status;
}
} while (State == EMMC_PRG_STATE);
return EFI_SUCCESS;
}
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;
EMMC_DEVICE_STATE State;
UINT32 RCA;
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));
}
if (MMC_HOST_HAS_SETIOS(Host)) {
// Set 1-bit bus width
Status = Host->SetIos (Host, 0, 1, EMMCBACKWARD);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): Set 1-bit bus width error, Status=%r.\n", Status));
return Status;
}
// Set 1-bit bus width for EXTCSD
Status = EmmcSetEXTCSD (MmcHostInstance, EXTCSD_BUS_WIDTH, EMMC_BUS_WIDTH_1BIT);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): Set extcsd bus width error, Status=%r.\n", Status));
return Status;
}
}
// Fetch ECSD
MmcHostInstance->CardInfo.ECSDData = AllocatePages (EFI_SIZE_TO_PAGES (sizeof (ECSD)));
if (MmcHostInstance->CardInfo.ECSDData == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Status = Host->SendCommand (Host, MMC_CMD8, 0);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): ECSD fetch error, Status=%r.\n", Status));
}
Status = Host->ReadBlockData (Host, 0, 512, (UINT32 *)MmcHostInstance->CardInfo.ECSDData);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): ECSD read error, Status=%r.\n", Status));
goto FreePageExit;
}
// Make sure device exiting data mode
do {
Status = EmmcGetDeviceState (MmcHostInstance, &State);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "EmmcIdentificationMode(): Failed to get device state, Status=%r.\n", Status));
goto FreePageExit;
}
} while (State == EMMC_DATA_STATE);
// 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 = MmcHostInstance->CardInfo.ECSDData->SECTOR_COUNT - 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;
FreePageExit:
FreePages (MmcHostInstance->CardInfo.ECSDData, EFI_SIZE_TO_PAGES (sizeof (ECSD)));
return Status;
}
STATIC
EFI_STATUS
InitializeEmmcDevice (
IN MMC_HOST_INSTANCE *MmcHostInstance
)
{
EFI_MMC_HOST_PROTOCOL *Host;
EFI_STATUS Status = EFI_SUCCESS;
ECSD *ECSDData;
UINT32 BusClockFreq, Idx, BusMode;
UINT32 TimingMode[4] = {EMMCHS52DDR1V2, EMMCHS52DDR1V8, EMMCHS52, EMMCHS26};
Host = MmcHostInstance->MmcHost;
ECSDData = MmcHostInstance->CardInfo.ECSDData;
if (ECSDData->DEVICE_TYPE == EMMCBACKWARD)
return EFI_SUCCESS;
if (!MMC_HOST_HAS_SETIOS(Host)) {
return EFI_SUCCESS;
}
Status = EmmcSetEXTCSD (MmcHostInstance, EXTCSD_HS_TIMING, EMMC_TIMING_HS);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "InitializeEmmcDevice(): Failed to switch high speed mode, Status:%r.\n", Status));
return Status;
}
for (Idx = 0; Idx < 4; Idx++) {
switch (TimingMode[Idx]) {
case EMMCHS52DDR1V2:
case EMMCHS52DDR1V8:
case EMMCHS52:
BusClockFreq = 52000000;
break;
case EMMCHS26:
BusClockFreq = 26000000;
break;
default:
return EFI_UNSUPPORTED;
}
Status = Host->SetIos (Host, BusClockFreq, 8, TimingMode[Idx]);
if (!EFI_ERROR (Status)) {
switch (TimingMode[Idx]) {
case EMMCHS52DDR1V2:
case EMMCHS52DDR1V8:
BusMode = EMMC_BUS_WIDTH_DDR_8BIT;
break;
case EMMCHS52:
case EMMCHS26:
BusMode = EMMC_BUS_WIDTH_8BIT;
break;
default:
return EFI_UNSUPPORTED;
}
Status = EmmcSetEXTCSD (MmcHostInstance, EXTCSD_BUS_WIDTH, BusMode);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "InitializeEmmcDevice(): Failed to set EXTCSD bus width, Status:%r\n", Status));
}
return Status;
}
}
return Status;
}
STATIC
UINT32
CreateSwitchCmdArgument (
IN UINT32 Mode,
IN UINT8 Group,
IN UINT8 Value
)
{
UINT32 Argument;
Argument = Mode << 31 | 0x00FFFFFF;
Argument &= ~(0xF << (Group * 4));
Argument |= Value << (Group * 4);
return Argument;
}
STATIC
EFI_STATUS
InitializeSdMmcDevice (
IN MMC_HOST_INSTANCE *MmcHostInstance
)
{
UINT32 CmdArg;
UINT32 Response[4];
UINT32 Buffer[128];
UINT32 Speed;
UINTN BlockSize;
UINTN CardSize;
UINTN NumBlocks;
BOOLEAN CccSwitch;
SCR Scr;
EFI_STATUS Status;
EFI_MMC_HOST_PROTOCOL *MmcHost;
Speed = SD_DEFAULT_SPEED;
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 (MMC_CSD_GET_CCC(Response) & SD_CCC_SWITCH) {
CccSwitch = TRUE;
} else {
CccSwitch = FALSE;
}
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;
}
Status = MmcHost->SendCommand (MmcHost, MMC_CMD55, CmdArg);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a (MMC_CMD55): Error and Status = %r\n", __FUNCTION__, Status));
return Status;
}
Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_R1, Response);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a (MMC_CMD55): Error and Status = %r\n", __FUNCTION__, Status));
return Status;
}
if ((Response[0] & MMC_STATUS_APP_CMD) == 0) {
return EFI_SUCCESS;
}
/* SCR */
Status = MmcHost->SendCommand (MmcHost, MMC_ACMD51, 0);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "%a(MMC_ACMD51): Error and Status = %r\n", __func__, Status));
return Status;
} else {
Status = MmcHost->ReadBlockData (MmcHost, 0, 8, Buffer);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "%a(MMC_ACMD51): ReadBlockData Error and Status = %r\n", __func__, Status));
return Status;
}
CopyMem (&Scr, Buffer, 8);
if (Scr.SD_SPEC == 2) {
if (Scr.SD_SPEC3 == 1) {
if (Scr.SD_SPEC4 == 1) {
DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 4.xx\n"));
} else {
DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 3.0x\n"));
}
} else {
if (Scr.SD_SPEC4 == 0) {
DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 2.0\n"));
} else {
DEBUG ((EFI_D_ERROR, "Found invalid SD Card\n"));
}
}
} else {
if ((Scr.SD_SPEC3 == 0) && (Scr.SD_SPEC4 == 0)) {
if (Scr.SD_SPEC == 1) {
DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 1.10\n"));
} else {
DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 1.0\n"));
}
} else {
DEBUG ((EFI_D_ERROR, "Found invalid SD Card\n"));
}
}
}
if (CccSwitch) {
/* SD Switch, Mode:0, Group:0, Value:0 */
CmdArg = CreateSwitchCmdArgument(0, 0, 0);
Status = MmcHost->SendCommand (MmcHost, MMC_CMD6, CmdArg);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a (MMC_CMD6): Error and Status = %r\n", __FUNCTION__, Status));
return Status;
} else {
Status = MmcHost->ReadBlockData (MmcHost, 0, SWITCH_CMD_DATA_LENGTH, Buffer);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a (MMC_CMD6): ReadBlockData Error and Status = %r\n", __FUNCTION__, Status));
return Status;
}
}
if (!(Buffer[3] & SD_HIGH_SPEED_SUPPORTED)) {
DEBUG ((DEBUG_ERROR, "%a : High Speed not supported by Card %r\n", __FUNCTION__, Status));
return Status;
}
Speed = SD_HIGH_SPEED;
/* SD Switch, Mode:1, Group:0, Value:1 */
CmdArg = CreateSwitchCmdArgument(1, 0, 1);
Status = MmcHost->SendCommand (MmcHost, MMC_CMD6, CmdArg);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a (MMC_CMD6): Error and Status = %r\n", __FUNCTION__, Status));
return Status;
} else {
Status = MmcHost->ReadBlockData (MmcHost, 0, SWITCH_CMD_DATA_LENGTH, Buffer);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a (MMC_CMD6): ReadBlockData Error and Status = %r\n", __FUNCTION__, Status));
return Status;
}
if ((Buffer[4] & SWITCH_CMD_SUCCESS_MASK) != 0x01000000) {
DEBUG((DEBUG_ERROR, "Problem switching SD card into high-speed mode\n"));
return Status;
}
}
}
if (Scr.SD_BUS_WIDTHS & SD_BUS_WIDTH_4BIT) {
CmdArg = MmcHostInstance->CardInfo.RCA << 16;
Status = MmcHost->SendCommand (MmcHost, MMC_CMD55, CmdArg);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a (MMC_CMD55): Error and Status = %r\n", __FUNCTION__, Status));
return Status;
}
/* Width: 4 */
Status = MmcHost->SendCommand (MmcHost, MMC_CMD6, 2);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a (MMC_CMD6): Error and Status = %r\n", __FUNCTION__, Status));
return Status;
}
}
if (MMC_HOST_HAS_SETIOS(MmcHost)) {
Status = MmcHost->SetIos (MmcHost, Speed, BUSWIDTH_4, EMMCBACKWARD);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a (SetIos): Error and Status = %r\n", __FUNCTION__, 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 (MMC)
// This command only valid for MMC and eMMC
Timeout = MAX_RETRY_COUNT;
do {
Status = MmcHost->SendCommand (MmcHost, MMC_CMD1, EMMC_CMD1_CAPACITY_GREATER_THAN_2GB);
if (EFI_ERROR (Status))
break;
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;
}
Timeout--;
} while (!OcrResponse.Ocr.PowerUp && (Timeout > 0));
if (Status == EFI_SUCCESS) {
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;
}
// Check whether MMC or eMMC
if (OcrResponse.Raw == EMMC_CMD1_CAPACITY_GREATER_THAN_2GB ||
OcrResponse.Raw == EMMC_CMD1_CAPACITY_LESS_THAN_2GB) {
return EmmcIdentificationMode (MmcHostInstance, OcrResponse);
}
}
// 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) {
gBS->Stall (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 {
gBS->Stall (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);
} else {
Status = InitializeEmmcDevice (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;
}
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