/**
Discover all partitions in the EMMC device.
@param[in] Device The pointer to the EMMC_DEVICE data structure.
@retval EFI_SUCCESS All the partitions in the device are successfully enumerated.
@return Others Some error occurs when enumerating the partitions.
**/
EFI_STATUS
DiscoverAllPartitions (
IN EMMC_DEVICE *Device
)
{
EFI_STATUS Status;
EMMC_PARTITION *Partition;
EMMC_CSD *Csd;
EMMC_CID *Cid;
EMMC_EXT_CSD *ExtCsd;
UINT8 Slot;
UINT64 Capacity;
UINT32 DevStatus;
UINT8 Index;
UINT32 SecCount;
UINT32 GpSizeMult;
Slot = Device->Slot;
Status = EmmcSendStatus (Device, Slot + 1, &DevStatus);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Deselect the device to force it enter stby mode before getting CSD
// register content.
// Note here we don't judge return status as some EMMC devices return
// error but the state has been stby.
//
EmmcSelect (Device, 0);
Status = EmmcSendStatus (Device, Slot + 1, &DevStatus);
if (EFI_ERROR (Status)) {
return Status;
}
Csd = &Device->Csd;
Status = EmmcGetCsd (Device, Slot + 1, Csd);
if (EFI_ERROR (Status)) {
return Status;
}
DumpCsd (Csd);
if ((Csd->CSizeLow | Csd->CSizeHigh << 2) == 0xFFF) {
Device->SectorAddressing = TRUE;
} else {
Device->SectorAddressing = FALSE;
}
Cid = &Device->Cid;
Status = EmmcGetCid (Device, Slot + 1, Cid);
if (EFI_ERROR (Status)) {
return Status;
}
Status = EmmcSelect (Device, Slot + 1);
if (EFI_ERROR (Status)) {
return Status;
}
ExtCsd = &Device->ExtCsd;
Status = EmmcGetExtCsd (Device, ExtCsd);
if (EFI_ERROR (Status)) {
return Status;
}
DumpExtCsd (ExtCsd);
if (ExtCsd->ExtCsdRev < 5) {
DEBUG ((EFI_D_ERROR, "The EMMC device version is too low, we don't support!!!\n"));
return EFI_UNSUPPORTED;
}
if ((ExtCsd->PartitioningSupport & BIT0) != BIT0) {
DEBUG ((EFI_D_ERROR, "The EMMC device doesn't support Partition Feature!!!\n"));
return EFI_UNSUPPORTED;
}
for (Index = 0; Index < EMMC_MAX_PARTITIONS; Index++) {
Partition = &Device->Partition[Index];
CopyMem (Partition, &mEmmcPartitionTemplate, sizeof (EMMC_PARTITION));
Partition->Device = Device;
InitializeListHead (&Partition->Queue);
Partition->BlockIo.Media = &Partition->BlockMedia;
Partition->BlockIo2.Media = &Partition->BlockMedia;
Partition->PartitionType = Index;
Partition->BlockMedia.IoAlign = Device->Private->PassThru->IoAlign;
Partition->BlockMedia.BlockSize = 0x200;
Partition->BlockMedia.LastBlock = 0x00;
Partition->BlockMedia.RemovableMedia = FALSE;
Partition->BlockMedia.MediaPresent = TRUE;
Partition->BlockMedia.LogicalPartition = FALSE;
switch (Index) {
case EmmcPartitionUserData:
SecCount = *(UINT32*)&ExtCsd->SecCount;
Capacity = MultU64x32 ((UINT64) SecCount, 0x200);
break;
case EmmcPartitionBoot1:
case EmmcPartitionBoot2:
Capacity = ExtCsd->BootSizeMult * SIZE_128KB;
break;
case EmmcPartitionRPMB:
Capacity = ExtCsd->RpmbSizeMult * SIZE_128KB;
break;
case EmmcPartitionGP1:
GpSizeMult = (UINT32)(ExtCsd->GpSizeMult[0] | (ExtCsd->GpSizeMult[1] << 8) | (ExtCsd->GpSizeMult[2] << 16));
Capacity = MultU64x32 (MultU64x32 (MultU64x32 ((UINT64)GpSizeMult, ExtCsd->HcWpGrpSize), ExtCsd->HcEraseGrpSize), SIZE_512KB);
break;
case EmmcPartitionGP2:
GpSizeMult = (UINT32)(ExtCsd->GpSizeMult[3] | (ExtCsd->GpSizeMult[4] << 8) | (ExtCsd->GpSizeMult[5] << 16));
Capacity = MultU64x32 (MultU64x32 (MultU64x32 ((UINT64)GpSizeMult, ExtCsd->HcWpGrpSize), ExtCsd->HcEraseGrpSize), SIZE_512KB);
break;
case EmmcPartitionGP3:
GpSizeMult = (UINT32)(ExtCsd->GpSizeMult[6] | (ExtCsd->GpSizeMult[7] << 8) | (ExtCsd->GpSizeMult[8] << 16));
Capacity = MultU64x32 (MultU64x32 (MultU64x32 ((UINT64)GpSizeMult, ExtCsd->HcWpGrpSize), ExtCsd->HcEraseGrpSize), SIZE_512KB);
break;
case EmmcPartitionGP4:
GpSizeMult = (UINT32)(ExtCsd->GpSizeMult[9] | (ExtCsd->GpSizeMult[10] << 8) | (ExtCsd->GpSizeMult[11] << 16));
Capacity = MultU64x32 (MultU64x32 (MultU64x32 ((UINT64)GpSizeMult, ExtCsd->HcWpGrpSize), ExtCsd->HcEraseGrpSize), SIZE_512KB);
break;
default:
ASSERT (FALSE);
return EFI_INVALID_PARAMETER;
}
if (Capacity != 0) {
Partition->Enable = TRUE;
Partition->BlockMedia.LastBlock = DivU64x32 (Capacity, Partition->BlockMedia.BlockSize) - 1;
}
if ((ExtCsd->EraseGroupDef & BIT0) == 0) {
if (Csd->WriteBlLen < 9) {
Partition->EraseBlock.EraseLengthGranularity = 1;
} else {
Partition->EraseBlock.EraseLengthGranularity = (Csd->EraseGrpMult + 1) * (Csd->EraseGrpSize + 1) * (1 << (Csd->WriteBlLen - 9));
}
} else {
Partition->EraseBlock.EraseLengthGranularity = 1024 * ExtCsd->HcEraseGrpSize;
}
}
return EFI_SUCCESS;
}
/**
Discover user area partition in the SD device.
@param[in] Device The pointer to the SD_DEVICE data structure.
@retval EFI_SUCCESS The user area partition in the SD device is successfully identified.
@return Others Some error occurs when identifying the user area.
**/
EFI_STATUS
DiscoverUserArea (
IN SD_DEVICE *Device
)
{
EFI_STATUS Status;
SD_CSD *Csd;
SD_CSD2 *Csd2;
SD_CID *Cid;
UINT64 Capacity;
UINT32 DevStatus;
UINT16 Rca;
UINT32 CSize;
UINT32 CSizeMul;
UINT32 ReadBlLen;
//
// Deselect the device to force it enter stby mode.
// Note here we don't judge return status as some SD devices return
// error but the state has been stby.
//
SdSelect (Device, 0);
Status = SdSetRca (Device, &Rca);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "DiscoverUserArea(): Assign new Rca = 0x%x fails with %r\n", Rca, Status));
return Status;
}
Csd = &Device->Csd;
Status = SdGetCsd (Device, Rca, Csd);
if (EFI_ERROR (Status)) {
return Status;
}
DumpCsd (Csd);
Cid = &Device->Cid;
Status = SdGetCid (Device, Rca, Cid);
if (EFI_ERROR (Status)) {
return Status;
}
GetSdModelName (Device, Cid);
Status = SdSelect (Device, Rca);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "DiscoverUserArea(): Reselect the device 0x%x fails with %r\n", Rca, Status));
return Status;
}
Status = SdSendStatus (Device, Rca, &DevStatus);
if (EFI_ERROR (Status)) {
return Status;
}
if (Csd->CsdStructure == 0) {
Device->SectorAddressing = FALSE;
CSize = (Csd->CSizeHigh << 2 | Csd->CSizeLow) + 1;
CSizeMul = (1 << (Csd->CSizeMul + 2));
ReadBlLen = (1 << (Csd->ReadBlLen));
Capacity = MultU64x32 (MultU64x32 ((UINT64)CSize, CSizeMul), ReadBlLen);
} else {
Device->SectorAddressing = TRUE;
Csd2 = (SD_CSD2*)(VOID*)Csd;
CSize = (Csd2->CSizeHigh << 16 | Csd2->CSizeLow) + 1;
Capacity = MultU64x32 ((UINT64)CSize, SIZE_512KB);
}
Device->BlockIo.Media = &Device->BlockMedia;
Device->BlockIo2.Media = &Device->BlockMedia;
Device->BlockMedia.IoAlign = Device->Private->PassThru->IoAlign;
Device->BlockMedia.BlockSize = 0x200;
Device->BlockMedia.LastBlock = 0x00;
Device->BlockMedia.RemovableMedia = TRUE;
Device->BlockMedia.MediaPresent = TRUE;
Device->BlockMedia.LogicalPartition = FALSE;
Device->BlockMedia.LastBlock = DivU64x32 (Capacity, Device->BlockMedia.BlockSize) - 1;
if (Csd->EraseBlkEn) {
Device->EraseBlock.EraseLengthGranularity = 1;
} else {
Device->EraseBlock.EraseLengthGranularity = (Csd->SectorSize + 1) * (1 << (Csd->WriteBlLen - 9));
}
return Status;
}