/** @file
+ MMC/SD Card driver for OMAP 35xx (SDIO not supported)
- Copyright (c) 2008-2009, Apple Inc. All rights reserved.
+ This driver always produces a BlockIo protocol but it starts off with no Media
+ present. A TimerCallBack detects when media is inserted or removed and after
+ a media change event a call to BlockIo ReadBlocks/WriteBlocks will cause the
+ media to be detected (or removed) and the BlockIo Media structure will get
+ updated. No MMC/SD Card harward registers are updated until the first BlockIo
+ ReadBlocks/WriteBlocks after media has been insterted (booting with a card
+ plugged in counts as an insertion event).
+
+ Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
- All rights reserved. This program and the accompanying materials
+ 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
**/
-#include <Uefi.h>
-
#include "MMCHS.h"
-EFI_BLOCK_IO_MEDIA MMCHSMedia = {
+EFI_BLOCK_IO_MEDIA gMMCHSMedia = {
SIGNATURE_32('s','d','i','o'), // MediaId
TRUE, // RemovableMedia
- TRUE, // MediaPresent
+ FALSE, // MediaPresent
FALSE, // LogicalPartition
FALSE, // ReadOnly
FALSE, // WriteCaching
EFI_DEVICE_PATH End;
} MMCHS_DEVICE_PATH;
-MMCHS_DEVICE_PATH gMmcHsDevicePath =
-{
+MMCHS_DEVICE_PATH gMmcHsDevicePath = {
{
HARDWARE_DEVICE_PATH,
HW_VENDOR_DP,
}
};
-CARD_INFO *gCardInfo;
+CARD_INFO gCardInfo;
EMBEDDED_EXTERNAL_DEVICE *gTPS65950;
+EFI_EVENT gTimerEvent;
+BOOLEAN gMediaChange = FALSE;
//
// Internal Functions
//
-STATIC
+
VOID
ParseCardCIDData (
UINT32 Response0,
UINT32 Response3
)
{
- gCardInfo->CIDData.MDT = ((Response0 >> 8) & 0xFFF);
- gCardInfo->CIDData.PSN = (((Response0 >> 24) & 0xFF) | ((Response1 & 0xFFFFFF) << 8));
- gCardInfo->CIDData.PRV = ((Response1 >> 24) & 0xFF);
- gCardInfo->CIDData.PNM[4] = ((Response2) & 0xFF);
- gCardInfo->CIDData.PNM[3] = ((Response2 >> 8) & 0xFF);
- gCardInfo->CIDData.PNM[2] = ((Response2 >> 16) & 0xFF);
- gCardInfo->CIDData.PNM[1] = ((Response2 >> 24) & 0xFF);
- gCardInfo->CIDData.PNM[0] = ((Response3) & 0xFF);
- gCardInfo->CIDData.OID = ((Response3 >> 8) & 0xFFFF);
- gCardInfo->CIDData.MID = ((Response3 >> 24) & 0xFF);
+ gCardInfo.CIDData.MDT = ((Response0 >> 8) & 0xFFF);
+ gCardInfo.CIDData.PSN = (((Response0 >> 24) & 0xFF) | ((Response1 & 0xFFFFFF) << 8));
+ gCardInfo.CIDData.PRV = ((Response1 >> 24) & 0xFF);
+ gCardInfo.CIDData.PNM[4] = ((Response2) & 0xFF);
+ gCardInfo.CIDData.PNM[3] = ((Response2 >> 8) & 0xFF);
+ gCardInfo.CIDData.PNM[2] = ((Response2 >> 16) & 0xFF);
+ gCardInfo.CIDData.PNM[1] = ((Response2 >> 24) & 0xFF);
+ gCardInfo.CIDData.PNM[0] = ((Response3) & 0xFF);
+ gCardInfo.CIDData.OID = ((Response3 >> 8) & 0xFFFF);
+ gCardInfo.CIDData.MID = ((Response3 >> 24) & 0xFF);
}
-STATIC
+
VOID
UpdateMMCHSClkFrequency (
UINTN NewCLKD
)
{
//Set Clock enable to 0x0 to not provide the clock to the card
- MmioAnd32(MMCHS_SYSCTL, ~CEN);
+ MmioAnd32 (MMCHS_SYSCTL, ~CEN);
//Set new clock frequency.
- MmioAndThenOr32(MMCHS_SYSCTL, ~CLKD_MASK, NewCLKD << 6);
+ MmioAndThenOr32 (MMCHS_SYSCTL, ~CLKD_MASK, NewCLKD << 6);
//Poll till Internal Clock Stable
while ((MmioRead32 (MMCHS_SYSCTL) & ICS_MASK) != ICS);
MmioOr32 (MMCHS_SYSCTL, CEN);
}
-STATIC
+
EFI_STATUS
SendCmd (
UINTN Cmd,
MmioWrite32 (MMCHS_BLK, BLEN_512BYTES);
//Setting Data timeout counter value to max value.
- MmioAndThenOr32(MMCHS_SYSCTL, ~DTO_MASK, DTO_VAL);
+ MmioAndThenOr32 (MMCHS_SYSCTL, ~DTO_MASK, DTO_VAL);
//Clear Status register.
MmioWrite32 (MMCHS_STAT, 0xFFFFFFFF);
return EFI_SUCCESS;
}
-STATIC
+
VOID
GetBlockInformation (
UINTN *BlockSize,
CSD_SDV2 *CsdSDV2Data;
UINTN CardSize;
- if (gCardInfo->CardType == SD_CARD_2_HIGH) {
- CsdSDV2Data = (CSD_SDV2 *)&gCardInfo->CSDData;
+ if (gCardInfo.CardType == SD_CARD_2_HIGH) {
+ CsdSDV2Data = (CSD_SDV2 *)&gCardInfo.CSDData;
//Populate BlockSize.
*BlockSize = (0x1UL << CsdSDV2Data->READ_BL_LEN);
*NumBlocks = ((CardSize + 1) * 1024);
} else {
//Populate BlockSize.
- *BlockSize = (0x1UL << gCardInfo->CSDData.READ_BL_LEN);
+ *BlockSize = (0x1UL << gCardInfo.CSDData.READ_BL_LEN);
//Calculate Total number of blocks.
- CardSize = gCardInfo->CSDData.C_SIZELow2 | (gCardInfo->CSDData.C_SIZEHigh10 << 2);
- *NumBlocks = (CardSize + 1) * (1 << (gCardInfo->CSDData.C_SIZE_MULT + 2));
+ CardSize = gCardInfo.CSDData.C_SIZELow2 | (gCardInfo.CSDData.C_SIZEHigh10 << 2);
+ *NumBlocks = (CardSize + 1) * (1 << (gCardInfo.CSDData.C_SIZE_MULT + 2));
}
//For >=2G card, BlockSize may be 1K, but the transfer size is 512 bytes.
*BlockSize = 512;
}
- DEBUG ((EFI_D_INFO, "Card type: %x, BlockSize: %x, NumBlocks: %x\n", gCardInfo->CardType, *BlockSize, *NumBlocks));
+ DEBUG ((EFI_D_INFO, "Card type: %x, BlockSize: %x, NumBlocks: %x\n", gCardInfo.CardType, *BlockSize, *NumBlocks));
}
-STATIC
+
VOID
CalculateCardCLKD (
UINTN *ClockFrequencySelect
UINTN TimeValue = 0 ;
UINTN Frequency = 0;
- MaxDataTransferRate = gCardInfo->CSDData.TRAN_SPEED;
+ MaxDataTransferRate = gCardInfo.CSDData.TRAN_SPEED;
+
+ // For SD Cards we would need to send CMD6 to set
+ // speeds abouve 25MHz. High Speed mode 50 MHz and up
//Calculate Transfer rate unit (Bits 2:0 of TRAN_SPEED)
switch (MaxDataTransferRate & 0x7) {
DEBUG ((EFI_D_INFO, "MaxDataTransferRate: 0x%x, Frequency: %d KHz, ClockFrequencySelect: %x\n", MaxDataTransferRate, Frequency/1000, *ClockFrequencySelect));
}
-STATIC
+
VOID
GetCardConfigurationData (
VOID
//Calculate BlockSize and Total number of blocks in the detected card.
GetBlockInformation(&BlockSize, &NumBlocks);
- gCardInfo->BlockSize = BlockSize;
- gCardInfo->NumBlocks = NumBlocks;
+ gCardInfo.BlockSize = BlockSize;
+ gCardInfo.NumBlocks = NumBlocks;
//Calculate Card clock divider value.
CalculateCardCLKD(&ClockFrequencySelect);
- gCardInfo->ClockFrequencySelect = ClockFrequencySelect;
+ gCardInfo.ClockFrequencySelect = ClockFrequencySelect;
}
-STATIC
+
EFI_STATUS
InitializeMMCHS (
VOID
//Select Device group to belong to P1 device group in Power IC.
Data = DEV_GRP_P1;
- Status = gTPS65950->Write(gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VMMC1_DEV_GRP), 1, &Data);
+ Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VMMC1_DEV_GRP), 1, &Data);
ASSERT_EFI_ERROR(Status);
//Configure voltage regulator for MMC1 in Power IC to output 3.0 voltage.
Data = VSEL_3_00V;
- Status = gTPS65950->Write(gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VMMC1_DEDICATED_REG), 1, &Data);
+ Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VMMC1_DEDICATED_REG), 1, &Data);
ASSERT_EFI_ERROR(Status);
//After ramping up voltage, set VDDS stable bit to indicate that voltage level is stable.
MmioOr32 (CONTROL_PBIAS_LITE, (PBIASLITEVMODE0 | PBIASLITEPWRDNZ0 | PBIASSPEEDCTRL0 | PBIASLITEVMODE1 | PBIASLITEWRDNZ1));
- //Software reset of the MMCHS host controller.
- MmioWrite32 (MMCHS_SYSCONFIG, SOFTRESET);
- gBS->Stall(1000);
- while ((MmioRead32 (MMCHS_SYSSTATUS) & RESETDONE_MASK) != RESETDONE);
+ // Enable WP GPIO
+ MmioAndThenOr32 (GPIO1_BASE + GPIO_OE, ~BIT23, BIT23);
- //Soft reset for all.
- MmioWrite32 (MMCHS_SYSCTL, SRA);
- gBS->Stall(1000);
- while ((MmioRead32 (MMCHS_SYSCTL) & SRA) != 0x0);
+ // Enable Card Detect
+ Data = CARD_DETECT_ENABLE;
+ gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID2, TPS65950_GPIO_CTRL), 1, &Data);
- //Voltage capabilities initialization. Activate VS18 and VS30.
- MmioOr32 (MMCHS_CAPA, (VS30 | VS18));
-
- //Wakeup configuration
- MmioOr32 (MMCHS_SYSCONFIG, ENAWAKEUP);
- MmioOr32 (MMCHS_HCTL, IWE);
-
- //MMCHS Controller default initialization
- MmioOr32 (MMCHS_CON, (OD | DW8_1_4_BIT | CEATA_OFF));
-
- MmioWrite32 (MMCHS_HCTL, (SDVS_3_0_V | DTW_1_BIT | SDBP_OFF));
-
- //Enable internal clock
- MmioOr32 (MMCHS_SYSCTL, ICE);
-
- //Set the clock frequency to 80KHz.
- UpdateMMCHSClkFrequency(CLKD_80KHZ);
-
- //Enable SD bus power.
- MmioOr32 (MMCHS_HCTL, (SDBP_ON));
-
- //Poll till SD bus power bit is set.
- while ((MmioRead32 (MMCHS_HCTL) & SDBP_MASK) != SDBP_ON);
return Status;
}
-STATIC
+
EFI_STATUS
PerformCardIdenfication (
VOID
BOOLEAN SDCmd8Supported = FALSE;
//Enable interrupts.
- MmioWrite32 (MMCHS_IE, (BADA_EN | CERR_EN | DEB_EN | DCRC_EN | DTO_EN | CIE_EN |
+ MmioWrite32 (MMCHS_IE, (BADA_EN | CERR_EN | DEB_EN | DCRC_EN | DTO_EN | CIE_EN |
CEB_EN | CCRC_EN | CTO_EN | BRR_EN | BWR_EN | TC_EN | CC_EN));
//Controller INIT procedure start.
while (!(MmioRead32 (MMCHS_STAT) & CC));
//End initialization sequence
- MmioAnd32(MMCHS_CON, ~INIT);
+ MmioAnd32 (MMCHS_CON, ~INIT);
MmioOr32 (MMCHS_HCTL, (SDVS_3_0_V | DTW_1_BIT | SDBP_ON));
MmioOr32 (MMCHS_CON, OD);
//Send CMD0 command.
- Status = SendCmd(CMD0, CMD0_INT_EN, CmdArgument);
+ Status = SendCmd (CMD0, CMD0_INT_EN, CmdArgument);
if (EFI_ERROR(Status)) {
DEBUG ((EFI_D_ERROR, "Cmd0 fails.\n"));
return Status;
DEBUG ((EFI_D_INFO, "CMD0 response: %x\n", MmioRead32 (MMCHS_RSP10)));
//Send CMD5 command.
- Status = SendCmd(CMD5, CMD5_INT_EN, CmdArgument);
+ Status = SendCmd (CMD5, CMD5_INT_EN, CmdArgument);
if (Status == EFI_SUCCESS) {
DEBUG ((EFI_D_ERROR, "CMD5 Success. SDIO card. Follow SDIO card specification.\n"));
DEBUG ((EFI_D_INFO, "CMD5 response: %x\n", MmioRead32 (MMCHS_RSP10)));
//Only 2.7V - 3.6V is supported for SD2.0, only SD 2.0 card can pass.
//MMC & SD1.1 card will fail this command.
CmdArgument = CMD8_ARG;
- Status = SendCmd(CMD8, CMD8_INT_EN, CmdArgument);
+ Status = SendCmd (CMD8, CMD8_INT_EN, CmdArgument);
if (Status == EFI_SUCCESS) {
Response = MmioRead32 (MMCHS_RSP10);
DEBUG ((EFI_D_INFO, "CMD8 success. CMD8 response: %x\n", Response));
while (RetryCount < MAX_RETRY_COUNT) {
//Send CMD55 command.
CmdArgument = 0;
- Status = SendCmd(CMD55, CMD55_INT_EN, CmdArgument);
+ Status = SendCmd (CMD55, CMD55_INT_EN, CmdArgument);
if (Status == EFI_SUCCESS) {
DEBUG ((EFI_D_INFO, "CMD55 success. CMD55 response: %x\n", MmioRead32 (MMCHS_RSP10)));
- gCardInfo->CardType = SD_CARD;
+ gCardInfo.CardType = SD_CARD;
} else {
DEBUG ((EFI_D_INFO, "CMD55 fails.\n"));
- gCardInfo->CardType = MMC_CARD;
+ gCardInfo.CardType = MMC_CARD;
}
//Send appropriate command for the card type which got detected.
- if (gCardInfo->CardType == SD_CARD) {
- CmdArgument = ((UINTN *) &(gCardInfo->OCRData))[0];
+ if (gCardInfo.CardType == SD_CARD) {
+ CmdArgument = ((UINTN *) &(gCardInfo.OCRData))[0];
//Set HCS bit.
if (SDCmd8Supported) {
CmdArgument |= HCS;
}
- Status = SendCmd(ACMD41, ACMD41_INT_EN, CmdArgument);
+ Status = SendCmd (ACMD41, ACMD41_INT_EN, CmdArgument);
if (EFI_ERROR(Status)) {
DEBUG ((EFI_D_INFO, "ACMD41 fails.\n"));
return Status;
}
- ((UINT32 *) &(gCardInfo->OCRData))[0] = MmioRead32 (MMCHS_RSP10);
- DEBUG ((EFI_D_INFO, "SD card detected. ACMD41 OCR: %x\n", ((UINT32 *) &(gCardInfo->OCRData))[0]));
- } else if (gCardInfo->CardType == MMC_CARD) {
+ ((UINT32 *) &(gCardInfo.OCRData))[0] = MmioRead32 (MMCHS_RSP10);
+ DEBUG ((EFI_D_INFO, "SD card detected. ACMD41 OCR: %x\n", ((UINT32 *) &(gCardInfo.OCRData))[0]));
+ } else if (gCardInfo.CardType == MMC_CARD) {
CmdArgument = 0;
- Status = SendCmd(CMD1, CMD1_INT_EN, CmdArgument);
+ Status = SendCmd (CMD1, CMD1_INT_EN, CmdArgument);
if (EFI_ERROR(Status)) {
DEBUG ((EFI_D_INFO, "CMD1 fails.\n"));
return Status;
}
//Poll the card until it is out of its power-up sequence.
- if (gCardInfo->OCRData.Busy == 1) {
+ if (gCardInfo.OCRData.Busy == 1) {
if (SDCmd8Supported) {
- gCardInfo->CardType = SD_CARD_2;
+ gCardInfo.CardType = SD_CARD_2;
}
//Card is ready. Check CCS (Card capacity status) bit (bit#30).
//SD 2.0 standard card will response with CCS 0, SD high capacity card will respond with CCS 1.
- if (gCardInfo->OCRData.AccessMode & BIT1) {
- gCardInfo->CardType = SD_CARD_2_HIGH;
+ if (gCardInfo.OCRData.AccessMode & BIT1) {
+ gCardInfo.CardType = SD_CARD_2_HIGH;
DEBUG ((EFI_D_INFO, "High capacity card.\n"));
} else {
DEBUG ((EFI_D_INFO, "Standard capacity card.\n"));
//Read CID data.
CmdArgument = 0;
- Status = SendCmd(CMD2, CMD2_INT_EN, CmdArgument);
+ Status = SendCmd (CMD2, CMD2_INT_EN, CmdArgument);
if (EFI_ERROR(Status)) {
DEBUG ((EFI_D_ERROR, "CMD2 fails. Status: %x\n", Status));
return Status;
//Read RCA
CmdArgument = 0;
- Status = SendCmd(CMD3, CMD3_INT_EN, CmdArgument);
+ Status = SendCmd (CMD3, CMD3_INT_EN, CmdArgument);
if (EFI_ERROR(Status)) {
DEBUG ((EFI_D_ERROR, "CMD3 fails. Status: %x\n", Status));
return Status;
}
//Set RCA for the detected card. RCA is CMD3 response.
- gCardInfo->RCA = (MmioRead32 (MMCHS_RSP10) >> 16);
- DEBUG ((EFI_D_INFO, "CMD3 response: RCA %x\n", gCardInfo->RCA));
+ gCardInfo.RCA = (MmioRead32 (MMCHS_RSP10) >> 16);
+ DEBUG ((EFI_D_INFO, "CMD3 response: RCA %x\n", gCardInfo.RCA));
//MMC Bus setting change after card identification.
- MmioAnd32(MMCHS_CON, ~OD);
+ MmioAnd32 (MMCHS_CON, ~OD);
MmioOr32 (MMCHS_HCTL, SDVS_3_0_V);
UpdateMMCHSClkFrequency(CLKD_400KHZ); //Set the clock frequency to 400KHz.
return EFI_SUCCESS;
}
-STATIC
+
EFI_STATUS
GetCardSpecificData (
VOID
UINTN CmdArgument;
//Send CMD9 to retrieve CSD.
- CmdArgument = gCardInfo->RCA << 16;
- Status = SendCmd(CMD9, CMD9_INT_EN, CmdArgument);
+ CmdArgument = gCardInfo.RCA << 16;
+ Status = SendCmd (CMD9, CMD9_INT_EN, CmdArgument);
if (EFI_ERROR(Status)) {
DEBUG ((EFI_D_ERROR, "CMD9 fails. Status: %x\n", Status));
return Status;
}
//Populate 128-bit CSD register data.
- ((UINT32 *)&(gCardInfo->CSDData))[0] = MmioRead32 (MMCHS_RSP10);
- ((UINT32 *)&(gCardInfo->CSDData))[1] = MmioRead32 (MMCHS_RSP32);
- ((UINT32 *)&(gCardInfo->CSDData))[2] = MmioRead32 (MMCHS_RSP54);
- ((UINT32 *)&(gCardInfo->CSDData))[3] = MmioRead32 (MMCHS_RSP76);
+ ((UINT32 *)&(gCardInfo.CSDData))[0] = MmioRead32 (MMCHS_RSP10);
+ ((UINT32 *)&(gCardInfo.CSDData))[1] = MmioRead32 (MMCHS_RSP32);
+ ((UINT32 *)&(gCardInfo.CSDData))[2] = MmioRead32 (MMCHS_RSP54);
+ ((UINT32 *)&(gCardInfo.CSDData))[3] = MmioRead32 (MMCHS_RSP76);
DEBUG ((EFI_D_INFO, "CMD9 response: %x %x %x %x\n", MmioRead32 (MMCHS_RSP10), MmioRead32 (MMCHS_RSP32), MmioRead32 (MMCHS_RSP54), MmioRead32 (MMCHS_RSP76)));
//Calculate total number of blocks and max. data transfer rate supported by the detected card.
GetCardConfigurationData();
- //Change MMCHS clock frequency to what detected card can support.
- UpdateMMCHSClkFrequency(gCardInfo->ClockFrequencySelect);
-
return Status;
}
-STATIC
+
EFI_STATUS
PerformCardConfiguration (
VOID
EFI_STATUS Status;
//Send CMD7
- CmdArgument = gCardInfo->RCA << 16;
- Status = SendCmd(CMD7, CMD7_INT_EN, CmdArgument);
+ CmdArgument = gCardInfo.RCA << 16;
+ Status = SendCmd (CMD7, CMD7_INT_EN, CmdArgument);
if (EFI_ERROR(Status)) {
DEBUG ((EFI_D_ERROR, "CMD7 fails. Status: %x\n", Status));
return Status;
}
+ if ((gCardInfo.CardType != UNKNOWN_CARD) && (gCardInfo.CardType != MMC_CARD)) {
+ // We could read SCR register, but SD Card Phys spec stats any SD Card shall
+ // set SCR.SD_BUS_WIDTHS to support 4-bit mode, so why bother?
+
+ // Send ACMD6 (application specific commands must be prefixed with CMD55)
+ Status = SendCmd (CMD55, CMD55_INT_EN, CmdArgument);
+ if (!EFI_ERROR (Status)) {
+ // set device into 4-bit data bus mode
+ Status = SendCmd (ACMD6, ACMD6_INT_EN, 0x2);
+ if (!EFI_ERROR (Status)) {
+ // Set host controler into 4-bit mode
+ MmioOr32 (MMCHS_HCTL, DTW_4_BIT);
+ DEBUG ((EFI_D_INFO, "SD Memory Card set to 4-bit mode\n"));
+ }
+ }
+ }
+
//Send CMD16 to set the block length
- CmdArgument = gCardInfo->BlockSize;
- Status = SendCmd(CMD16, CMD16_INT_EN, CmdArgument);
+ CmdArgument = gCardInfo.BlockSize;
+ Status = SendCmd (CMD16, CMD16_INT_EN, CmdArgument);
if (EFI_ERROR(Status)) {
DEBUG ((EFI_D_ERROR, "CMD16 fails. Status: %x\n", Status));
return Status;
}
+ //Change MMCHS clock frequency to what detected card can support.
+ UpdateMMCHSClkFrequency(gCardInfo.ClockFrequencySelect);
+
return EFI_SUCCESS;
}
-STATIC
+
EFI_STATUS
-ReadBlockData(
+ReadBlockData (
IN EFI_BLOCK_IO_PROTOCOL *This,
OUT VOID *Buffer
)
return EFI_SUCCESS;
}
-STATIC
+
EFI_STATUS
-WriteBlockData(
+WriteBlockData (
IN EFI_BLOCK_IO_PROTOCOL *This,
OUT VOID *Buffer
)
return EFI_SUCCESS;
}
-STATIC
EFI_STATUS
-TransferBlockData(
- IN EFI_BLOCK_IO_PROTOCOL *This,
- OUT VOID *Buffer,
+DmaBlocks (
+ IN EFI_BLOCK_IO_PROTOCOL *This,
+ IN UINTN Lba,
+ IN OUT VOID *Buffer,
+ IN UINTN BlockCount,
+ IN OPERATION_TYPE OperationType
+ )
+{
+ EFI_STATUS Status;
+ UINTN DmaSize = 0;
+ UINTN Cmd = 0;
+ UINTN CmdInterruptEnable;
+ UINTN CmdArgument;
+ VOID *BufferMap;
+ EFI_PHYSICAL_ADDRESS BufferAddress;
+ OMAP_DMA4 Dma4;
+ DMA_MAP_OPERATION DmaOperation;
+ EFI_STATUS MmcStatus;
+ UINTN RetryCount = 0;
+
+CpuDeadLoop ();
+ // Map passed in buffer for DMA xfer
+ DmaSize = BlockCount * This->Media->BlockSize;
+ Status = DmaMap (DmaOperation, Buffer, &DmaSize, &BufferAddress, &BufferMap);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ ZeroMem (&DmaOperation, sizeof (DMA_MAP_OPERATION));
+ \r
+ Dma4.DataType = 2; // DMA4_CSDPi[1:0] 32-bit elements from MMCHS_DATA\r
+ Dma4.SourceEndiansim = 0; // DMA4_CSDPi[21] \r
+ Dma4.DestinationEndianism = 0; // DMA4_CSDPi[19]\r
+ Dma4.SourcePacked = 0; // DMA4_CSDPi[6]\r
+ Dma4.DestinationPacked = 0; // DMA4_CSDPi[13]\r
+ Dma4.NumberOfElementPerFrame = This->Media->BlockSize/4; // DMA4_CENi (TRM 4K is optimum value) \r
+ Dma4.NumberOfFramePerTransferBlock = BlockCount; // DMA4_CFNi \r
+ Dma4.ReadPriority = 0; // DMA4_CCRi[6] Low priority read \r
+ Dma4.WritePriority = 0; // DMA4_CCRi[23] Prefetech disabled\r
+
+ //Populate the command information based on the operation type.
+ if (OperationType == READ) {
+ Cmd = CMD18; //Multiple block read
+ CmdInterruptEnable = CMD18_INT_EN;
+ DmaOperation = MapOperationBusMasterCommonBuffer;
+
+ Dma4.ReadPortAccessType =0 ; // DMA4_CSDPi[8:7] Can not burst MMCHS_DATA reg\r
+ Dma4.WritePortAccessType = 3; // DMA4_CSDPi[15:14] Memory burst 16x32\r
+ Dma4.WriteMode = 1; // DMA4_CSDPi[17:16] Write posted\r
+ \r
+ Dma4.SourceStartAddress = MMCHS_DATA; // DMA4_CSSAi\r
+ Dma4.DestinationStartAddress = (UINT32)BufferAddress; // DMA4_CDSAi\r
+ Dma4.SourceElementIndex = 1; // DMA4_CSEi\r
+ Dma4.SourceFrameIndex = 0x200; // DMA4_CSFi\r
+ Dma4.DestinationElementIndex = 1; // DMA4_CDEi\r
+ Dma4.DestinationFrameIndex = 0; // DMA4_CDFi\r
+\r
+ Dma4.ReadPortAccessMode = 0; // DMA4_CCRi[13:12] Always read MMCHS_DATA\r
+ Dma4.WritePortAccessMode = 1; // DMA4_CCRi[15:14] Post increment memory address\r
+ Dma4.ReadRequestNumber = 0x1e; // DMA4_CCRi[4:0] Syncro with MMCA_DMA_RX (61) \r
+ Dma4.WriteRequestNumber = 1; // DMA4_CCRi[20:19] Syncro upper 0x3e == 62 (one based)
+
+ } else if (OperationType == WRITE) {
+ Cmd = CMD25; //Multiple block write
+ CmdInterruptEnable = CMD25_INT_EN;
+ DmaOperation = MapOperationBusMasterRead;
+
+ Dma4.ReadPortAccessType = 3; // DMA4_CSDPi[8:7] Memory burst 16x32\r
+ Dma4.WritePortAccessType = 0; // DMA4_CSDPi[15:14] Can not burst MMCHS_DATA reg\r
+ Dma4.WriteMode = 1; // DMA4_CSDPi[17:16] Write posted ???\r
+ \r
+ Dma4.SourceStartAddress = (UINT32)BufferAddress; // DMA4_CSSAi\r
+ Dma4.DestinationStartAddress = MMCHS_DATA; // DMA4_CDSAi\r
+ Dma4.SourceElementIndex = 1; // DMA4_CSEi\r
+ Dma4.SourceFrameIndex = 0x200; // DMA4_CSFi\r
+ Dma4.DestinationElementIndex = 1; // DMA4_CDEi\r
+ Dma4.DestinationFrameIndex = 0; // DMA4_CDFi\r
+\r
+ Dma4.ReadPortAccessMode = 1; // DMA4_CCRi[13:12] Post increment memory address\r
+ Dma4.WritePortAccessMode = 0; // DMA4_CCRi[15:14] Always write MMCHS_DATA\r
+ Dma4.ReadRequestNumber = 0x1d; // DMA4_CCRi[4:0] Syncro with MMCA_DMA_TX (60) \r
+ Dma4.WriteRequestNumber = 1; // DMA4_CCRi[20:19] Syncro upper 0x3d == 61 (one based)
+
+ } else {
+ return EFI_INVALID_PARAMETER;
+ }
+
+
+ EnableDmaChannel (2, &Dma4);
+
+
+ //Set command argument based on the card access mode (Byte mode or Block mode)
+ if (gCardInfo.OCRData.AccessMode & BIT1) {
+ CmdArgument = Lba;
+ } else {
+ CmdArgument = Lba * This->Media->BlockSize;
+ }
+
+ //Send Command.
+ Status = SendCmd (Cmd, CmdInterruptEnable, CmdArgument);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "CMD fails. Status: %x\n", Status));
+ return Status;
+ }
+
+ //Check for the Transfer completion.
+ while (RetryCount < MAX_RETRY_COUNT) {
+ //Read Status
+ do {
+ MmcStatus = MmioRead32 (MMCHS_STAT);
+ } while (MmcStatus == 0);
+
+ //Check if Transfer complete (TC) bit is set?
+ if (MmcStatus & TC) {
+ break;
+ } else {
+ DEBUG ((EFI_D_ERROR, "MmcStatus for TC: %x\n", MmcStatus));
+ //Check if DEB, DCRC or DTO interrupt occured.
+ if ((MmcStatus & DEB) | (MmcStatus & DCRC) | (MmcStatus & DTO)) {
+ //There was an error during the data transfer.
+
+ //Set SRD bit to 1 and wait until it return to 0x0.
+ MmioOr32 (MMCHS_SYSCTL, SRD);
+ while((MmioRead32 (MMCHS_SYSCTL) & SRD) != 0x0);
+
+ DisableDmaChannel (2, DMA4_CSR_BLOCK, DMA4_CSR_ERR);
+ DmaUnmap (BufferMap);
+ return EFI_DEVICE_ERROR;
+ }
+ }
+ RetryCount++;
+ }
+
+ DisableDmaChannel (2, DMA4_CSR_BLOCK, DMA4_CSR_ERR);
+ Status = DmaUnmap (BufferMap);
+
+ if (RetryCount == MAX_RETRY_COUNT) {
+ DEBUG ((EFI_D_ERROR, "TransferBlockData timed out.\n"));
+ return EFI_TIMEOUT;
+ }
+
+ return Status;
+}
+
+
+EFI_STATUS
+TransferBlock (
+ IN EFI_BLOCK_IO_PROTOCOL *This,
+ IN UINTN Lba,
+ IN OUT VOID *Buffer,
IN OPERATION_TYPE OperationType
)
{
EFI_STATUS Status;
UINTN MmcStatus;
UINTN RetryCount = 0;
+ UINTN Cmd = 0;
+ UINTN CmdInterruptEnable = 0;
+ UINTN CmdArgument = 0;
+
+
+ //Populate the command information based on the operation type.
+ if (OperationType == READ) {
+ Cmd = CMD17; //Single block read
+ CmdInterruptEnable = CMD18_INT_EN;
+ } else if (OperationType == WRITE) {
+ Cmd = CMD24; //Single block write
+ CmdInterruptEnable = CMD24_INT_EN;
+ }
+
+ //Set command argument based on the card access mode (Byte mode or Block mode)
+ if (gCardInfo.OCRData.AccessMode & BIT1) {
+ CmdArgument = Lba;
+ } else {
+ CmdArgument = Lba * This->Media->BlockSize;
+ }
+
+ //Send Command.
+ Status = SendCmd (Cmd, CmdInterruptEnable, CmdArgument);
+ if (EFI_ERROR(Status)) {
+ DEBUG ((EFI_D_ERROR, "CMD fails. Status: %x\n", Status));
+ return Status;
+ }
//Read or Write data.
if (OperationType == READ) {
- Status = ReadBlockData(This, Buffer);
+ Status = ReadBlockData (This, Buffer);
if (EFI_ERROR(Status)) {
DEBUG((EFI_D_ERROR, "ReadBlockData fails.\n"));
return Status;
}
} else if (OperationType == WRITE) {
- Status = WriteBlockData(This, Buffer);
+ Status = WriteBlockData (This, Buffer);
if (EFI_ERROR(Status)) {
DEBUG((EFI_D_ERROR, "WriteBlockData fails.\n"));
return Status;
return EFI_SUCCESS;
}
-STATIC
+BOOLEAN
+CardPresent (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ UINT8 Data;
+
+ //
+ // Card detect is a GPIO0 on the TPS65950
+ //
+ Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID2, GPIODATAIN1), 1, &Data);
+ if (EFI_ERROR (Status)) {
+ return FALSE;
+ }
+
+ if ((Data & CARD_DETECT_BIT) == CARD_DETECT_BIT) {
+ // No Card present
+ return FALSE;
+ } else {
+ return TRUE;
+ }
+}
+
+EFI_STATUS
+DetectCard (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+
+ if (!CardPresent ()) {
+ return EFI_NO_MEDIA;
+ }
+
+ //Initialize MMC host controller clocks.
+ Status = InitializeMMCHS ();
+ if (EFI_ERROR(Status)) {
+ DEBUG ((EFI_D_ERROR, "Initialize MMC host controller fails. Status: %x\n", Status));
+ return Status;
+ }
+
+ //Software reset of the MMCHS host controller.
+ MmioWrite32 (MMCHS_SYSCONFIG, SOFTRESET);
+ gBS->Stall(1000);
+ while ((MmioRead32 (MMCHS_SYSSTATUS) & RESETDONE_MASK) != RESETDONE);
+
+ //Soft reset for all.
+ MmioWrite32 (MMCHS_SYSCTL, SRA);
+ gBS->Stall(1000);
+ while ((MmioRead32 (MMCHS_SYSCTL) & SRA) != 0x0);
+
+ //Voltage capabilities initialization. Activate VS18 and VS30.
+ MmioOr32 (MMCHS_CAPA, (VS30 | VS18));
+
+ //Wakeup configuration
+ MmioOr32 (MMCHS_SYSCONFIG, ENAWAKEUP);
+ MmioOr32 (MMCHS_HCTL, IWE);
+
+ //MMCHS Controller default initialization
+ MmioOr32 (MMCHS_CON, (OD | DW8_1_4_BIT | CEATA_OFF));
+
+ MmioWrite32 (MMCHS_HCTL, (SDVS_3_0_V | DTW_1_BIT | SDBP_OFF));
+
+ //Enable internal clock
+ MmioOr32 (MMCHS_SYSCTL, ICE);
+
+ //Set the clock frequency to 80KHz.
+ UpdateMMCHSClkFrequency (CLKD_80KHZ);
+
+ //Enable SD bus power.
+ MmioOr32 (MMCHS_HCTL, (SDBP_ON));
+
+ //Poll till SD bus power bit is set.
+ while ((MmioRead32 (MMCHS_HCTL) & SDBP_MASK) != SDBP_ON);
+
+ //Card idenfication
+ Status = PerformCardIdenfication ();
+ if (EFI_ERROR(Status)) {
+ DEBUG ((EFI_D_ERROR, "No MMC/SD card detected.\n"));
+ return Status;
+ }
+
+ //Get CSD (Card specific data) for the detected card.
+ Status = GetCardSpecificData();
+ if (EFI_ERROR(Status)) {
+ return Status;
+ }
+
+ //Configure the card in data transfer mode.
+ Status = PerformCardConfiguration();
+ if (EFI_ERROR(Status)) {
+ return Status;
+ }
+
+ //Patch the Media structure.
+ gMMCHSMedia.LastBlock = (gCardInfo.NumBlocks - 1);
+ gMMCHSMedia.BlockSize = gCardInfo.BlockSize;
+ gMMCHSMedia.ReadOnly = (MmioRead32 (GPIO1_BASE + GPIO_DATAIN) & BIT23) == BIT23;
+ gMMCHSMedia.MediaPresent = TRUE;
+ gMMCHSMedia.MediaId++;
+
+ DEBUG ((EFI_D_INFO, "SD Card Media Change on Handle 0x%08x\n", gImageHandle));
+
+ return Status;
+}
+
+#define MAX_MMCHS_TRANSFER_SIZE 0x4000
+
EFI_STATUS
SdReadWrite (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN OPERATION_TYPE OperationType
)
{
- EFI_STATUS Status;
+ EFI_STATUS Status = EFI_SUCCESS;
UINTN RetryCount = 0;
- UINTN NumBlocks;
- UINTN Cmd = 0;
- UINTN CmdInterruptEnable = 0;
- UINTN CmdArgument = 0;
+ UINTN BlockCount;
+ UINTN BytesToBeTranferedThisPass = 0;
+ UINTN BytesRemainingToBeTransfered;
+ EFI_TPL OldTpl;\r
+ BOOLEAN Update;\r
+
+
+ Update = FALSE;
+
+ if (gMediaChange) {
+ Update = TRUE;
+ Status = DetectCard ();
+ if (EFI_ERROR (Status)) {
+ // We detected a removal
+ gMMCHSMedia.MediaPresent = FALSE;
+ gMMCHSMedia.LastBlock = 0;
+ gMMCHSMedia.BlockSize = 512; // Should be zero but there is a bug in DiskIo
+ gMMCHSMedia.ReadOnly = FALSE;
+ }
+ gMediaChange = FALSE;
+ } else if (!gMMCHSMedia.MediaPresent) {
+ Status = EFI_NO_MEDIA;
+ goto Done;
+ }
+
+ if (Update) {
+ DEBUG ((EFI_D_INFO, "SD Card ReinstallProtocolInterface ()\n"));
+ gBS->ReinstallProtocolInterface (\r
+ gImageHandle,\r
+ &gEfiBlockIoProtocolGuid,\r
+ &gBlockIo,\r
+ &gBlockIo\r
+ );\r
+ }
+
+ if (EFI_ERROR (Status)) {
+ goto Done;
+ }
+
+ if (Buffer == NULL) {
+ Status = EFI_INVALID_PARAMETER;
+ goto Done;
+ }
+
+ if (Lba > This->Media->LastBlock) {
+ Status = EFI_INVALID_PARAMETER;
+ goto Done;
+ }
+
+ if ((BufferSize % This->Media->BlockSize) != 0) {
+ Status = EFI_BAD_BUFFER_SIZE;
+ goto Done;
+ }
//Check if the data lines are not in use.
while ((RetryCount++ < MAX_RETRY_COUNT) && ((MmioRead32 (MMCHS_PSTATE) & DATI_MASK) != DATI_ALLOWED));
if (RetryCount == MAX_RETRY_COUNT) {
- return EFI_TIMEOUT;
+ Status = EFI_TIMEOUT;
+ goto Done;
}
- //Populate the command information based on the operation type.
- if (OperationType == READ) {
- Cmd = CMD17; //Single block read
- CmdInterruptEnable = CMD17_INT_EN;
- } else if (OperationType == WRITE) {
- Cmd = CMD24; //Single block write
- CmdInterruptEnable = CMD24_INT_EN;
- }
+ OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
- //Calculate total number of blocks its going to read.
- NumBlocks = (BufferSize + (This->Media->BlockSize - 1))/This->Media->BlockSize;
+ BytesRemainingToBeTransfered = BufferSize;
+ while (BytesRemainingToBeTransfered > 0) {
- //Set command argument based on the card access mode (Byte mode or Block mode)
- if (gCardInfo->OCRData.AccessMode & BIT1) {
- CmdArgument = (UINTN)Lba;
- } else {
- CmdArgument = (UINTN)Lba * This->Media->BlockSize;
- }
+ if (gMediaChange) {
+ Status = EFI_NO_MEDIA;
+ DEBUG ((EFI_D_INFO, "SdReadWrite() EFI_NO_MEDIA due to gMediaChange\n"));
+ goto DoneRestoreTPL;
+ }
- while(NumBlocks) {
- //Send Command.
- Status = SendCmd(Cmd, CmdInterruptEnable, CmdArgument);
- if (EFI_ERROR(Status)) {
- DEBUG ((EFI_D_ERROR, "CMD fails. Status: %x\n", Status));
- return Status;
+ // Turn OFF DMA path until it is debugged
+ // BytesToBeTranferedThisPass = (BytesToBeTranferedThisPass >= MAX_MMCHS_TRANSFER_SIZE) ? MAX_MMCHS_TRANSFER_SIZE : BytesRemainingToBeTransfered;
+ BytesToBeTranferedThisPass = This->Media->BlockSize;
+
+ BlockCount = BytesToBeTranferedThisPass/This->Media->BlockSize;
+
+ if (BlockCount > 1) {
+ Status = DmaBlocks (This, Lba, Buffer, BlockCount, OperationType);
+ } else {
+ //Transfer a block worth of data.
+ Status = TransferBlock (This, Lba, Buffer, OperationType);
}
- //Transfer a block worth of data.
- Status = TransferBlockData(This, Buffer, OperationType);
if (EFI_ERROR(Status)) {
DEBUG ((EFI_D_ERROR, "TransferBlockData fails. %x\n", Status));
- return Status;
- }
-
- //Adjust command argument.
- if (gCardInfo->OCRData.AccessMode & BIT1) {
- CmdArgument++; //Increase BlockIndex by one.
- } else {
- CmdArgument += This->Media->BlockSize; //Increase BlockIndex by BlockSize
+ goto DoneRestoreTPL;
}
- //Adjust Buffer.
+ BytesRemainingToBeTransfered -= BytesToBeTranferedThisPass;
+ Lba += BlockCount;
Buffer = (UINT8 *)Buffer + This->Media->BlockSize;
- NumBlocks--;
}
- return EFI_SUCCESS;
+DoneRestoreTPL:\r
+ gBS->RestoreTPL (OldTpl);\r
+Done:\r
+ return Status;\r
}
+
+/**\r
+ Reset the Block Device.\r
+\r
+ @param This Indicates a pointer to the calling context.\r
+ @param ExtendedVerification Driver may perform diagnostics on reset.\r
+\r
+ @retval EFI_SUCCESS The device was reset.\r
+ @retval EFI_DEVICE_ERROR The device is not functioning properly and could\r
+ not be reset.\r
+\r
+**/
EFI_STATUS
EFIAPI
MMCHSReset (
IN BOOLEAN ExtendedVerification
)
{
- return EFI_SUCCESS;
+ return EFI_SUCCESS;
}
+
+/**\r
+ Read BufferSize bytes from Lba into Buffer.\r
+\r
+ @param This Indicates a pointer to the calling context.\r
+ @param MediaId Id of the media, changes every time the media is replaced.\r
+ @param Lba The starting Logical Block Address to read from\r
+ @param BufferSize Size of Buffer, must be a multiple of device block size.\r
+ @param Buffer A pointer to the destination buffer for the data. The caller is\r
+ responsible for either having implicit or explicit ownership of the buffer.\r
+\r
+ @retval EFI_SUCCESS The data was read correctly from the device.\r
+ @retval EFI_DEVICE_ERROR The device reported an error while performing the read.\r
+ @retval EFI_NO_MEDIA There is no media in the device.\r
+ @retval EFI_MEDIA_CHANGED The MediaId does not matched the current device.\r
+ @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r
+ @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid, \r
+ or the buffer is not on proper alignment.\r
+EFI_STATUS
+
+**/
EFI_STATUS
EFIAPI
MMCHSReadBlocks (
{
EFI_STATUS Status;
- if (Buffer == NULL)
- {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Lba > This->Media->LastBlock)
- {
- return EFI_INVALID_PARAMETER;
- }
-
- if ((BufferSize % This->Media->BlockSize) != 0)
- {
- return EFI_BAD_BUFFER_SIZE;
- }
-
//Perform Read operation.
- Status = SdReadWrite(This, (UINTN)Lba, Buffer, BufferSize, READ);
- if (EFI_ERROR(Status)) {
- DEBUG ((EFI_D_ERROR, "Read operation fails.\n"));
- }
+ Status = SdReadWrite (This, (UINTN)Lba, Buffer, BufferSize, READ);
- return Status;
+ return Status;\r
}
+
+/**\r
+ Write BufferSize bytes from Lba into Buffer.\r
+\r
+ @param This Indicates a pointer to the calling context.\r
+ @param MediaId The media ID that the write request is for.\r
+ @param Lba The starting logical block address to be written. The caller is\r
+ responsible for writing to only legitimate locations.\r
+ @param BufferSize Size of Buffer, must be a multiple of device block size.\r
+ @param Buffer A pointer to the source buffer for the data.\r
+\r
+ @retval EFI_SUCCESS The data was written correctly to the device.\r
+ @retval EFI_WRITE_PROTECTED The device can not be written to.\r
+ @retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r
+ @retval EFI_NO_MEDIA There is no media in the device.\r
+ @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r
+ @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r
+ @retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid, \r
+ or the buffer is not on proper alignment.\r
+\r
+**/
EFI_STATUS
EFIAPI
MMCHSWriteBlocks (
IN VOID *Buffer
)
{
- EFI_STATUS Status;
-
- if (Buffer == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Lba > This->Media->LastBlock) {
- return EFI_INVALID_PARAMETER;
- }
-
- if ((BufferSize % This->Media->BlockSize) != 0) {
- return EFI_BAD_BUFFER_SIZE;
- }
-
- if (This->Media->ReadOnly) {
- return EFI_WRITE_PROTECTED;
- }
+ EFI_STATUS Status;
//Perform write operation.
- Status = SdReadWrite(This, (UINTN)Lba, Buffer, BufferSize, WRITE);
- if (EFI_ERROR(Status)) {
- DEBUG ((EFI_D_ERROR, "Write operation fails.\n"));
- }
-
- return Status;
+ Status = SdReadWrite (This, (UINTN)Lba, Buffer, BufferSize, WRITE);
+\r
+ return Status;\r
}
+
+/**\r
+ Flush the Block Device.\r
+\r
+ @param This Indicates a pointer to the calling context.\r
+\r
+ @retval EFI_SUCCESS All outstanding data was written to the device\r
+ @retval EFI_DEVICE_ERROR The device reported an error while writting back the data\r
+ @retval EFI_NO_MEDIA There is no media in the device.\r
+\r
+**/
EFI_STATUS
EFIAPI
MMCHSFlushBlocks (
return EFI_SUCCESS;
}
-EFI_BLOCK_IO_PROTOCOL BlockIo =
-{
+
+EFI_BLOCK_IO_PROTOCOL gBlockIo = {
EFI_BLOCK_IO_INTERFACE_REVISION, // Revision
- &MMCHSMedia, // *Media
+ &gMMCHSMedia, // *Media
MMCHSReset, // Reset
MMCHSReadBlocks, // ReadBlocks
MMCHSWriteBlocks, // WriteBlocks
MMCHSFlushBlocks // FlushBlocks
};
+
+/**\r
+ Timer callback to convert card present hardware into a boolean that indicates\r
+ a media change event has happened. If you just check the GPIO you could see \r
+ card 1 and then check again after card 1 was removed and card 2 was inserted\r
+ and you would still see media present. Thus you need the timer tick to catch\r
+ the toggle event.\r
+\r
+ @param Event Event whose notification function is being invoked.\r
+ @param Context The pointer to the notification function's context,\r
+ which is implementation-dependent. Not used.\r
+\r
+**/
+VOID
+EFIAPI
+TimerCallback (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ BOOLEAN Present;
+
+ Present = CardPresent ();
+ if (gMMCHSMedia.MediaPresent) {
+ if (!Present && !gMediaChange) {
+ gMediaChange = TRUE;
+ }
+ } else {
+ if (Present && !gMediaChange) {
+ gMediaChange = TRUE;
+ }
+ }
+}
+
+
EFI_STATUS
+EFIAPI
MMCHSInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
{
EFI_STATUS Status;
- Status = gBS->LocateProtocol(&gEmbeddedExternalDeviceProtocolGuid, NULL, (VOID **)&gTPS65950);
+ Status = gBS->LocateProtocol (&gEmbeddedExternalDeviceProtocolGuid, NULL, (VOID **)&gTPS65950);
ASSERT_EFI_ERROR(Status);
- gCardInfo = (CARD_INFO *)AllocateZeroPool(sizeof(CARD_INFO));
- if (gCardInfo == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- //Initialize MMC host controller.
- Status = InitializeMMCHS();
- if (EFI_ERROR(Status)) {
- DEBUG ((EFI_D_ERROR, "Initialize MMC host controller fails. Status: %x\n", Status));
- return Status;
- }
-
- //Card idenfication
- Status = PerformCardIdenfication();
- if (EFI_ERROR(Status)) {
- DEBUG ((EFI_D_ERROR, "No MMC/SD card detected.\n"));
- return EFI_SUCCESS; //NOTE: Check if this is correct..
- }
-
- //Get CSD (Card specific data) for the detected card.
- Status = GetCardSpecificData();
- if (EFI_ERROR(Status)) {
- return Status;
- }
-
- //Configure the card in data transfer mode.
- Status = PerformCardConfiguration();
- if (EFI_ERROR(Status)) {
- return Status;
- }
+ ZeroMem (&gCardInfo, sizeof (CARD_INFO));
- //Patch the Media structure.
- MMCHSMedia.LastBlock = (gCardInfo->NumBlocks - 1);
- MMCHSMedia.BlockSize = gCardInfo->BlockSize;
+ Status = gBS->CreateEvent (EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_CALLBACK, TimerCallback, NULL, &gTimerEvent);
+ ASSERT_EFI_ERROR (Status);
+
+ Status = gBS->SetTimer (gTimerEvent, TimerPeriodic, FixedPcdGet32 (PcdMmchsTimerFreq100NanoSeconds));
+ ASSERT_EFI_ERROR (Status);
//Publish BlockIO.
- Status = gBS->InstallMultipleProtocolInterfaces(&ImageHandle,
- &gEfiBlockIoProtocolGuid, &BlockIo,
- &gEfiDevicePathProtocolGuid, &gMmcHsDevicePath,
- NULL);
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &ImageHandle,
+ &gEfiBlockIoProtocolGuid, &gBlockIo,
+ &gEfiDevicePathProtocolGuid, &gMmcHsDevicePath,
+ NULL
+ );
return Status;
}
projects / mirror_edk2.git / blobdiff