diff options
Diffstat (limited to 'MdeModulePkg/Bus/Sd/EmmcDxe/EmmcDxe.c')
| -rw-r--r-- | MdeModulePkg/Bus/Sd/EmmcDxe/EmmcDxe.c | 1175 |
1 files changed, 1175 insertions, 0 deletions
diff --git a/MdeModulePkg/Bus/Sd/EmmcDxe/EmmcDxe.c b/MdeModulePkg/Bus/Sd/EmmcDxe/EmmcDxe.c new file mode 100644 index 0000000000..f07540fd36 --- /dev/null +++ b/MdeModulePkg/Bus/Sd/EmmcDxe/EmmcDxe.c @@ -0,0 +1,1175 @@ +/** @file
+ The EmmcDxe driver is used to manage the EMMC device.
+
+ It produces BlockIo, BlockIo2 and StorageSecurity protocols to allow upper layer
+ access the EMMC device.
+
+ Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
+ 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 "EmmcDxe.h"
+
+//
+// EmmcDxe Driver Binding Protocol Instance
+//
+EFI_DRIVER_BINDING_PROTOCOL gEmmcDxeDriverBinding = {
+ EmmcDxeDriverBindingSupported,
+ EmmcDxeDriverBindingStart,
+ EmmcDxeDriverBindingStop,
+ 0x10,
+ NULL,
+ NULL
+};
+
+//
+// Template for Emmc Partitions.
+//
+EMMC_PARTITION mEmmcPartitionTemplate = {
+ EMMC_PARTITION_SIGNATURE, // Signature
+ FALSE, // Enable
+ EmmcPartitionUnknown, // PartitionType
+ NULL, // Handle
+ NULL, // DevicePath
+ { // BlockIo
+ EFI_BLOCK_IO_PROTOCOL_REVISION,
+ NULL,
+ EmmcReset,
+ EmmcReadBlocks,
+ EmmcWriteBlocks,
+ EmmcFlushBlocks
+ },
+ { // BlockIo2
+ NULL,
+ EmmcResetEx,
+ EmmcReadBlocksEx,
+ EmmcWriteBlocksEx,
+ EmmcFlushBlocksEx
+ },
+ { // BlockMedia
+ 0, // MediaId
+ FALSE, // RemovableMedia
+ TRUE, // MediaPresent
+ FALSE, // LogicPartition
+ FALSE, // ReadOnly
+ FALSE, // WritingCache
+ 0x200, // BlockSize
+ 0, // IoAlign
+ 0 // LastBlock
+ },
+ { // StorageSecurity
+ EmmcSecurityProtocolIn,
+ EmmcSecurityProtocolOut
+ },
+ {
+ NULL,
+ NULL
+ },
+ NULL // Device
+};
+
+/**
+ Decode and print EMMC CSD Register content.
+
+ @param[in] Csd Pointer to EMMC_CSD data structure.
+
+ @retval EFI_SUCCESS The function completed successfully
+**/
+EFI_STATUS
+DumpCsd (
+ IN EMMC_CSD *Csd
+ )
+{
+ DEBUG((DEBUG_INFO, "== Dump Emmc Csd Register==\n"));
+ DEBUG((DEBUG_INFO, " CSD structure 0x%x\n", Csd->CsdStructure));
+ DEBUG((DEBUG_INFO, " System specification version 0x%x\n", Csd->SpecVers));
+ DEBUG((DEBUG_INFO, " Data read access-time 1 0x%x\n", Csd->Taac));
+ DEBUG((DEBUG_INFO, " Data read access-time 2 0x%x\n", Csd->Nsac));
+ DEBUG((DEBUG_INFO, " Max. bus clock frequency 0x%x\n", Csd->TranSpeed));
+ DEBUG((DEBUG_INFO, " Device command classes 0x%x\n", Csd->Ccc));
+ DEBUG((DEBUG_INFO, " Max. read data block length 0x%x\n", Csd->ReadBlLen));
+ DEBUG((DEBUG_INFO, " Partial blocks for read allowed 0x%x\n", Csd->ReadBlPartial));
+ DEBUG((DEBUG_INFO, " Write block misalignment 0x%x\n", Csd->WriteBlkMisalign));
+ DEBUG((DEBUG_INFO, " Read block misalignment 0x%x\n", Csd->ReadBlkMisalign));
+ DEBUG((DEBUG_INFO, " DSR implemented 0x%x\n", Csd->DsrImp));
+ DEBUG((DEBUG_INFO, " Device size 0x%x\n", Csd->CSizeLow | (Csd->CSizeHigh << 2)));
+ DEBUG((DEBUG_INFO, " Max. read current @ VDD min 0x%x\n", Csd->VddRCurrMin));
+ DEBUG((DEBUG_INFO, " Max. read current @ VDD max 0x%x\n", Csd->VddRCurrMax));
+ DEBUG((DEBUG_INFO, " Max. write current @ VDD min 0x%x\n", Csd->VddWCurrMin));
+ DEBUG((DEBUG_INFO, " Max. write current @ VDD max 0x%x\n", Csd->VddWCurrMax));
+ DEBUG((DEBUG_INFO, " Device size multiplier 0x%x\n", Csd->CSizeMult));
+ DEBUG((DEBUG_INFO, " Erase group size 0x%x\n", Csd->EraseGrpSize));
+ DEBUG((DEBUG_INFO, " Erase group size multiplier 0x%x\n", Csd->EraseGrpMult));
+ DEBUG((DEBUG_INFO, " Write protect group size 0x%x\n", Csd->WpGrpSize));
+ DEBUG((DEBUG_INFO, " Write protect group enable 0x%x\n", Csd->WpGrpEnable));
+ DEBUG((DEBUG_INFO, " Manufacturer default ECC 0x%x\n", Csd->DefaultEcc));
+ DEBUG((DEBUG_INFO, " Write speed factor 0x%x\n", Csd->R2WFactor));
+ DEBUG((DEBUG_INFO, " Max. write data block length 0x%x\n", Csd->WriteBlLen));
+ DEBUG((DEBUG_INFO, " Partial blocks for write allowed 0x%x\n", Csd->WriteBlPartial));
+ DEBUG((DEBUG_INFO, " Content protection application 0x%x\n", Csd->ContentProtApp));
+ DEBUG((DEBUG_INFO, " File format group 0x%x\n", Csd->FileFormatGrp));
+ DEBUG((DEBUG_INFO, " Copy flag (OTP) 0x%x\n", Csd->Copy));
+ DEBUG((DEBUG_INFO, " Permanent write protection 0x%x\n", Csd->PermWriteProtect));
+ DEBUG((DEBUG_INFO, " Temporary write protection 0x%x\n", Csd->TmpWriteProtect));
+ DEBUG((DEBUG_INFO, " File format 0x%x\n", Csd->FileFormat));
+ DEBUG((DEBUG_INFO, " ECC code 0x%x\n", Csd->Ecc));
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Decode and print EMMC EXT_CSD Register content.
+
+ @param[in] ExtCsd Pointer to the EMMC_EXT_CSD data structure.
+
+ @retval EFI_SUCCESS The function completed successfully
+**/
+EFI_STATUS
+DumpExtCsd (
+ IN EMMC_EXT_CSD *ExtCsd
+ )
+{
+ DEBUG((DEBUG_INFO, "==Dump Emmc ExtCsd Register==\n"));
+ DEBUG((DEBUG_INFO, " Supported Command Sets 0x%x\n", ExtCsd->CmdSet));
+ DEBUG((DEBUG_INFO, " HPI features 0x%x\n", ExtCsd->HpiFeatures));
+ DEBUG((DEBUG_INFO, " Background operations support 0x%x\n", ExtCsd->BkOpsSupport));
+ DEBUG((DEBUG_INFO, " Background operations status 0x%x\n", ExtCsd->BkopsStatus));
+ DEBUG((DEBUG_INFO, " Number of correctly programmed sectors 0x%x\n", *((UINT32*)&ExtCsd->CorrectlyPrgSectorsNum[0])));
+ DEBUG((DEBUG_INFO, " Initialization time after partitioning 0x%x\n", ExtCsd->IniTimeoutAp));
+ DEBUG((DEBUG_INFO, " TRIM Multiplier 0x%x\n", ExtCsd->TrimMult));
+ DEBUG((DEBUG_INFO, " Secure Feature support 0x%x\n", ExtCsd->SecFeatureSupport));
+ DEBUG((DEBUG_INFO, " Secure Erase Multiplier 0x%x\n", ExtCsd->SecEraseMult));
+ DEBUG((DEBUG_INFO, " Secure TRIM Multiplier 0x%x\n", ExtCsd->SecTrimMult));
+ DEBUG((DEBUG_INFO, " Boot information 0x%x\n", ExtCsd->BootInfo));
+ DEBUG((DEBUG_INFO, " Boot partition size 0x%x\n", ExtCsd->BootSizeMult));
+ DEBUG((DEBUG_INFO, " Access size 0x%x\n", ExtCsd->AccSize));
+ DEBUG((DEBUG_INFO, " High-capacity erase unit size 0x%x\n", ExtCsd->HcEraseGrpSize));
+ DEBUG((DEBUG_INFO, " High-capacity erase timeout 0x%x\n", ExtCsd->EraseTimeoutMult));
+ DEBUG((DEBUG_INFO, " Reliable write sector count 0x%x\n", ExtCsd->RelWrSecC));
+ DEBUG((DEBUG_INFO, " High-capacity write protect group size 0x%x\n", ExtCsd->HcWpGrpSize));
+ DEBUG((DEBUG_INFO, " Sleep/awake timeout 0x%x\n", ExtCsd->SATimeout));
+ DEBUG((DEBUG_INFO, " Sector Count 0x%x\n", *((UINT32*)&ExtCsd->SecCount[0])));
+ DEBUG((DEBUG_INFO, " Partition switching timing 0x%x\n", ExtCsd->PartitionSwitchTime));
+ DEBUG((DEBUG_INFO, " Out-of-interrupt busy timing 0x%x\n", ExtCsd->OutOfInterruptTime));
+ DEBUG((DEBUG_INFO, " I/O Driver Strength 0x%x\n", ExtCsd->DriverStrength));
+ DEBUG((DEBUG_INFO, " Device type 0x%x\n", ExtCsd->DeviceType));
+ DEBUG((DEBUG_INFO, " CSD STRUCTURE 0x%x\n", ExtCsd->CsdStructure));
+ DEBUG((DEBUG_INFO, " Extended CSD revision 0x%x\n", ExtCsd->ExtCsdRev));
+ DEBUG((DEBUG_INFO, " Command set 0x%x\n", ExtCsd->CmdSet));
+ DEBUG((DEBUG_INFO, " Command set revision 0x%x\n", ExtCsd->CmdSetRev));
+ DEBUG((DEBUG_INFO, " Power class 0x%x\n", ExtCsd->PowerClass));
+ DEBUG((DEBUG_INFO, " High-speed interface timing 0x%x\n", ExtCsd->HsTiming));
+ DEBUG((DEBUG_INFO, " Bus width mode 0x%x\n", ExtCsd->BusWidth));
+ DEBUG((DEBUG_INFO, " Erased memory content 0x%x\n", ExtCsd->ErasedMemCont));
+ DEBUG((DEBUG_INFO, " Partition configuration 0x%x\n", ExtCsd->PartitionConfig));
+ DEBUG((DEBUG_INFO, " Boot config protection 0x%x\n", ExtCsd->BootConfigProt));
+ DEBUG((DEBUG_INFO, " Boot bus Conditions 0x%x\n", ExtCsd->BootBusConditions));
+ DEBUG((DEBUG_INFO, " High-density erase group definition 0x%x\n", ExtCsd->EraseGroupDef));
+ DEBUG((DEBUG_INFO, " Boot write protection status register 0x%x\n", ExtCsd->BootWpStatus));
+ DEBUG((DEBUG_INFO, " Boot area write protection register 0x%x\n", ExtCsd->BootWp));
+ DEBUG((DEBUG_INFO, " User area write protection register 0x%x\n", ExtCsd->UserWp));
+ DEBUG((DEBUG_INFO, " FW configuration 0x%x\n", ExtCsd->FwConfig));
+ DEBUG((DEBUG_INFO, " RPMB Size 0x%x\n", ExtCsd->RpmbSizeMult));
+ DEBUG((DEBUG_INFO, " H/W reset function 0x%x\n", ExtCsd->RstFunction));
+ DEBUG((DEBUG_INFO, " Partitioning Support 0x%x\n", ExtCsd->PartitioningSupport));
+ DEBUG((DEBUG_INFO, " Max Enhanced Area Size 0x%02x%02x%02x\n", \
+ ExtCsd->MaxEnhSizeMult[2], ExtCsd->MaxEnhSizeMult[1], ExtCsd->MaxEnhSizeMult[0]));
+ DEBUG((DEBUG_INFO, " Partitions attribute 0x%x\n", ExtCsd->PartitionsAttribute));
+ DEBUG((DEBUG_INFO, " Partitioning Setting 0x%x\n", ExtCsd->PartitionSettingCompleted));
+ DEBUG((DEBUG_INFO, " General Purpose Partition 1 Size 0x%02x%02x%02x\n", \
+ ExtCsd->GpSizeMult[2], ExtCsd->GpSizeMult[1], ExtCsd->GpSizeMult[0]));
+ DEBUG((DEBUG_INFO, " General Purpose Partition 2 Size 0x%02x%02x%02x\n", \
+ ExtCsd->GpSizeMult[5], ExtCsd->GpSizeMult[4], ExtCsd->GpSizeMult[3]));
+ DEBUG((DEBUG_INFO, " General Purpose Partition 3 Size 0x%02x%02x%02x\n", \
+ ExtCsd->GpSizeMult[8], ExtCsd->GpSizeMult[7], ExtCsd->GpSizeMult[6]));
+ DEBUG((DEBUG_INFO, " General Purpose Partition 4 Size 0x%02x%02x%02x\n", \
+ ExtCsd->GpSizeMult[11], ExtCsd->GpSizeMult[10], ExtCsd->GpSizeMult[9]));
+ DEBUG((DEBUG_INFO, " Enhanced User Data Area Size 0x%02x%02x%02x\n", \
+ ExtCsd->EnhSizeMult[2], ExtCsd->EnhSizeMult[1], ExtCsd->EnhSizeMult[0]));
+ DEBUG((DEBUG_INFO, " Enhanced User Data Start Address 0x%x\n", *((UINT32*)&ExtCsd->EnhStartAddr[0])));
+ DEBUG((DEBUG_INFO, " Bad Block Management mode 0x%x\n", ExtCsd->SecBadBlkMgmnt));
+ DEBUG((DEBUG_INFO, " Native sector size 0x%x\n", ExtCsd->NativeSectorSize));
+ DEBUG((DEBUG_INFO, " Sector size emulation 0x%x\n", ExtCsd->UseNativeSector));
+ DEBUG((DEBUG_INFO, " Sector size 0x%x\n", ExtCsd->DataSectorSize));
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Get EMMC device model name.
+
+ @param[in, out] Device The pointer to the EMMC_DEVICE data structure.
+ @param[in] Cid Pointer to EMMC_CID data structure.
+
+ @retval EFI_SUCCESS The function completed successfully
+
+**/
+EFI_STATUS
+GetEmmcModelName (
+ IN OUT EMMC_DEVICE *Device,
+ IN EMMC_CID *Cid
+ )
+{
+ CHAR8 String[EMMC_MODEL_NAME_MAX_LEN];
+
+ ZeroMem (String, sizeof (String));
+ CopyMem (String, &Cid->OemId, sizeof (Cid->OemId));
+ String[sizeof (Cid->OemId)] = ' ';
+ CopyMem (String + sizeof (Cid->OemId) + 1, Cid->ProductName, sizeof (Cid->ProductName));
+ String[sizeof (Cid->OemId) + sizeof (Cid->ProductName)] = ' ';
+ CopyMem (String + sizeof (Cid->OemId) + sizeof (Cid->ProductName) + 1, Cid->ProductSerialNumber, sizeof (Cid->ProductSerialNumber));
+
+ AsciiStrToUnicodeStr (String, Device->ModelName);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ 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;
+ EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru;
+ 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;
+
+ PassThru = Device->Private->PassThru;
+ 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;
+ }
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Install BlkIo, BlkIo2 and Ssp protocols for the specified partition in the EMMC device.
+
+ @param[in] Device The pointer to the EMMC_DEVICE data structure.
+ @param[in] Index The index of the partition.
+
+ @retval EFI_SUCCESS The protocols are installed successfully.
+ @retval Others Some error occurs when installing the protocols.
+
+**/
+EFI_STATUS
+InstallProtocolOnPartition (
+ IN EMMC_DEVICE *Device,
+ IN UINT8 Index
+ )
+{
+ EFI_STATUS Status;
+ EMMC_PARTITION *Partition;
+ CONTROLLER_DEVICE_PATH ControlNode;
+ EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+ EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath;
+ EFI_HANDLE DeviceHandle;
+
+ //
+ // Build device path
+ //
+ ParentDevicePath = Device->DevicePath;
+
+ ControlNode.Header.Type = HARDWARE_DEVICE_PATH;
+ ControlNode.Header.SubType = HW_CONTROLLER_DP;
+ SetDevicePathNodeLength (&ControlNode.Header, sizeof (CONTROLLER_DEVICE_PATH));
+ ControlNode.ControllerNumber = Index;
+
+ DevicePath = AppendDevicePathNode (ParentDevicePath, (EFI_DEVICE_PATH_PROTOCOL*)&ControlNode);
+ if (DevicePath == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Error;
+ }
+
+ DeviceHandle = NULL;
+ RemainingDevicePath = DevicePath;
+ Status = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &RemainingDevicePath, &DeviceHandle);
+ if (!EFI_ERROR (Status) && (DeviceHandle != NULL) && IsDevicePathEnd(RemainingDevicePath)) {
+ Status = EFI_ALREADY_STARTED;
+ goto Error;
+ }
+
+ Partition = &Device->Partition[Index];
+ Partition->DevicePath = DevicePath;
+ if (Partition->Enable) {
+ //
+ // Install BlkIo/BlkIo2/Ssp for the specified partition
+ //
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &Partition->Handle,
+ &gEfiDevicePathProtocolGuid,
+ Partition->DevicePath,
+ &gEfiBlockIoProtocolGuid,
+ &Partition->BlockIo,
+ &gEfiBlockIo2ProtocolGuid,
+ &Partition->BlockIo2,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ goto Error;
+ }
+
+ if (((Partition->PartitionType == EmmcPartitionUserData) ||
+ (Partition->PartitionType == EmmcPartitionBoot1) ||
+ (Partition->PartitionType == EmmcPartitionBoot2)) &&
+ ((Device->Csd.Ccc & BIT10) != 0)) {
+ Status = gBS->InstallProtocolInterface (
+ &Partition->Handle,
+ &gEfiStorageSecurityCommandProtocolGuid,
+ EFI_NATIVE_INTERFACE,
+ &Partition->StorageSecurity
+ );
+ if (EFI_ERROR (Status)) {
+ gBS->UninstallMultipleProtocolInterfaces (
+ &Partition->Handle,
+ &gEfiDevicePathProtocolGuid,
+ Partition->DevicePath,
+ &gEfiBlockIoProtocolGuid,
+ &Partition->BlockIo,
+ &gEfiBlockIo2ProtocolGuid,
+ &Partition->BlockIo2,
+ NULL
+ );
+ goto Error;
+ }
+ }
+
+ gBS->OpenProtocol (
+ Device->Private->Controller,
+ &gEfiSdMmcPassThruProtocolGuid,
+ (VOID **) &(Device->Private->PassThru),
+ Device->Private->DriverBindingHandle,
+ Partition->Handle,
+ EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
+ );
+ } else {
+ Status = EFI_INVALID_PARAMETER;
+ }
+
+Error:
+ if (EFI_ERROR (Status) && (DevicePath != NULL)) {
+ FreePool (DevicePath);
+ }
+
+ return Status;
+}
+
+/**
+ Scan EMMC Bus to discover the device.
+
+ @param[in] Private The EMMC driver private data structure.
+ @param[in] Slot The slot number to check device present.
+
+ @retval EFI_SUCCESS Successfully to discover the device and attach
+ SdMmcIoProtocol to it.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack
+ of resources.
+ @retval EFI_ALREADY_STARTED The device was discovered before.
+ @retval Others Fail to discover the device.
+
+**/
+EFI_STATUS
+EFIAPI
+DiscoverEmmcDevice (
+ IN EMMC_DRIVER_PRIVATE_DATA *Private,
+ IN UINT8 Slot,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ )
+{
+ EFI_STATUS Status;
+ EMMC_DEVICE *Device;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+ EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;
+ EFI_DEVICE_PATH_PROTOCOL *RemainingEmmcDevPath;
+ EFI_DEV_PATH *Node;
+ EFI_HANDLE DeviceHandle;
+ EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru;
+ UINT8 Index;
+
+ Device = NULL;
+ DevicePath = NULL;
+ NewDevicePath = NULL;
+ RemainingDevicePath = NULL;
+ PassThru = Private->PassThru;
+ Device = &Private->Device[Slot];
+
+ //
+ // Build Device Path to check if the EMMC device present at the slot.
+ //
+ Status = PassThru->BuildDevicePath (
+ PassThru,
+ Slot,
+ &DevicePath
+ );
+ if (EFI_ERROR(Status)) {
+ return Status;
+ }
+
+ if (DevicePath->SubType != MSG_EMMC_DP) {
+ Status = EFI_UNSUPPORTED;
+ goto Error;
+ }
+
+ NewDevicePath = AppendDevicePathNode (
+ Private->ParentDevicePath,
+ DevicePath
+ );
+ if (NewDevicePath == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Error;
+ }
+
+ DeviceHandle = NULL;
+ RemainingEmmcDevPath = NewDevicePath;
+ Status = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &RemainingEmmcDevPath, &DeviceHandle);
+ //
+ // The device path to the EMMC device doesn't exist. It means the corresponding device private data hasn't been initialized.
+ //
+ if (EFI_ERROR (Status) || (DeviceHandle == NULL) || !IsDevicePathEnd (RemainingEmmcDevPath)) {
+ Device->DevicePath = NewDevicePath;
+ Device->Slot = Slot;
+ Device->Private = Private;
+ //
+ // Expose user area in the Sd memory card to upper layer.
+ //
+ Status = DiscoverAllPartitions (Device);
+ if (EFI_ERROR(Status)) {
+ FreePool (NewDevicePath);
+ goto Error;
+ }
+
+ Status = gBS->InstallProtocolInterface (
+ &Device->Handle,
+ &gEfiDevicePathProtocolGuid,
+ EFI_NATIVE_INTERFACE,
+ Device->DevicePath
+ );
+ if (EFI_ERROR(Status)) {
+ FreePool (NewDevicePath);
+ goto Error;
+ }
+
+ Device->ControllerNameTable = NULL;
+ GetEmmcModelName (Device, &Device->Cid);
+ AddUnicodeString2 (
+ "eng",
+ gEmmcDxeComponentName.SupportedLanguages,
+ &Device->ControllerNameTable,
+ Device->ModelName,
+ TRUE
+ );
+ AddUnicodeString2 (
+ "en",
+ gEmmcDxeComponentName.SupportedLanguages,
+ &Device->ControllerNameTable,
+ Device->ModelName,
+ FALSE
+ );
+ }
+
+ if (RemainingDevicePath == NULL) {
+ //
+ // Expose all partitions in the Emmc device to upper layer.
+ //
+ for (Index = 0; Index < EMMC_MAX_PARTITIONS; Index++) {
+ InstallProtocolOnPartition (Device, Index);
+ }
+ } else if (!IsDevicePathEnd (RemainingDevicePath)) {
+ //
+ // Enumerate the specified partition
+ //
+ Node = (EFI_DEV_PATH *) RemainingDevicePath;
+ if ((DevicePathType (&Node->DevPath) != HARDWARE_DEVICE_PATH) ||
+ (DevicePathSubType (&Node->DevPath) != HW_CONTROLLER_DP) ||
+ (DevicePathNodeLength (&Node->DevPath) != sizeof (CONTROLLER_DEVICE_PATH))) {
+ Status = EFI_INVALID_PARAMETER;
+ goto Error;
+ }
+
+ Index = (UINT8)Node->Controller.ControllerNumber;
+ if (Index >= EMMC_MAX_PARTITIONS) {
+ Status = EFI_INVALID_PARAMETER;
+ goto Error;
+ }
+
+ Status = InstallProtocolOnPartition (Device, Index);
+ }
+
+Error:
+ FreePool (DevicePath);
+
+ return Status;
+}
+
+/**
+ Tests to see if this driver supports a given controller. If a child device is provided,
+ it further tests to see if this driver supports creating a handle for the specified child device.
+
+ This function checks to see if the driver specified by This supports the device specified by
+ ControllerHandle. Drivers will typically use the device path attached to
+ ControllerHandle and/or the services from the bus I/O abstraction attached to
+ ControllerHandle to determine if the driver supports ControllerHandle. This function
+ may be called many times during platform initialization. In order to reduce boot times, the tests
+ performed by this function must be very small, and take as little time as possible to execute. This
+ function must not change the state of any hardware devices, and this function must be aware that the
+ device specified by ControllerHandle may already be managed by the same driver or a
+ different driver. This function must match its calls to AllocatePages() with FreePages(),
+ AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol().
+ Since ControllerHandle may have been previously started by the same driver, if a protocol is
+ already in the opened state, then it must not be closed with CloseProtocol(). This is required
+ to guarantee the state of ControllerHandle is not modified by this function.
+
+ @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
+ @param[in] ControllerHandle The handle of the controller to test. This handle
+ must support a protocol interface that supplies
+ an I/O abstraction to the driver.
+ @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This
+ parameter is ignored by device drivers, and is optional for bus
+ drivers. For bus drivers, if this parameter is not NULL, then
+ the bus driver must determine if the bus controller specified
+ by ControllerHandle and the child controller specified
+ by RemainingDevicePath are both supported by this
+ bus driver.
+
+ @retval EFI_SUCCESS The device specified by ControllerHandle and
+ RemainingDevicePath is supported by the driver specified by This.
+ @retval EFI_ALREADY_STARTED The device specified by ControllerHandle and
+ RemainingDevicePath is already being managed by the driver
+ specified by This.
+ @retval EFI_ACCESS_DENIED The device specified by ControllerHandle and
+ RemainingDevicePath is already being managed by a different
+ driver or an application that requires exclusive access.
+ Currently not implemented.
+ @retval EFI_UNSUPPORTED The device specified by ControllerHandle and
+ RemainingDevicePath is not supported by the driver specified by This.
+**/
+EFI_STATUS
+EFIAPI
+EmmcDxeDriverBindingSupported (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ )
+{
+ EFI_STATUS Status;
+ EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
+ EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru;
+ UINT8 Slot;
+
+ //
+ // Test EFI_SD_MMC_PASS_THRU_PROTOCOL on the controller handle.
+ //
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiSdMmcPassThruProtocolGuid,
+ (VOID**) &PassThru,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+
+ if (Status == EFI_ALREADY_STARTED) {
+ return EFI_SUCCESS;
+ }
+
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Test RemainingDevicePath is valid or not.
+ //
+ if ((RemainingDevicePath != NULL) && !IsDevicePathEnd (RemainingDevicePath)) {
+ Status = PassThru->GetSlotNumber (PassThru, RemainingDevicePath, &Slot);
+ if (EFI_ERROR (Status)) {
+ //
+ // Close the I/O Abstraction(s) used to perform the supported test
+ //
+ gBS->CloseProtocol (
+ Controller,
+ &gEfiSdMmcPassThruProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+ return Status;
+ }
+ }
+
+ //
+ // Close the I/O Abstraction(s) used to perform the supported test
+ //
+ gBS->CloseProtocol (
+ Controller,
+ &gEfiSdMmcPassThruProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+
+ //
+ // Open the EFI Device Path protocol needed to perform the supported test
+ //
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiDevicePathProtocolGuid,
+ (VOID **) &ParentDevicePath,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ return Status;
+}
+
+/**
+ Starts a device controller or a bus controller.
+
+ The Start() function is designed to be invoked from the EFI boot service ConnectController().
+ As a result, much of the error checking on the parameters to Start() has been moved into this
+ common boot service. It is legal to call Start() from other locations,
+ but the following calling restrictions must be followed or the system behavior will not be deterministic.
+ 1. ControllerHandle must be a valid EFI_HANDLE.
+ 2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned
+ EFI_DEVICE_PATH_PROTOCOL.
+ 3. Prior to calling Start(), the Supported() function for the driver specified by This must
+ have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.
+
+ @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
+ @param[in] ControllerHandle The handle of the controller to start. This handle
+ must support a protocol interface that supplies
+ an I/O abstraction to the driver.
+ @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This
+ parameter is ignored by device drivers, and is optional for bus
+ drivers. For a bus driver, if this parameter is NULL, then handles
+ for all the children of Controller are created by this driver.
+ If this parameter is not NULL and the first Device Path Node is
+ not the End of Device Path Node, then only the handle for the
+ child device specified by the first Device Path Node of
+ RemainingDevicePath is created by this driver.
+ If the first Device Path Node of RemainingDevicePath is
+ the End of Device Path Node, no child handle is created by this
+ driver.
+
+ @retval EFI_SUCCESS The device was started.
+ @retval EFI_DEVICE_ERROR The device could not be started due to a device error.Currently not implemented.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
+ @retval Others The driver failded to start the device.
+
+**/
+EFI_STATUS
+EFIAPI
+EmmcDxeDriverBindingStart (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ )
+{
+ EFI_STATUS Status;
+ EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru;
+ EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
+ EMMC_DRIVER_PRIVATE_DATA *Private;
+ UINT8 Slot;
+
+ Private = NULL;
+ PassThru = NULL;
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiSdMmcPassThruProtocolGuid,
+ (VOID **) &PassThru,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if ((EFI_ERROR (Status)) && (Status != EFI_ALREADY_STARTED)) {
+ return Status;
+ }
+
+ //
+ // Check EFI_ALREADY_STARTED to reuse the original EMMC_DRIVER_PRIVATE_DATA.
+ //
+ if (Status != EFI_ALREADY_STARTED) {
+ Private = AllocateZeroPool (sizeof (EMMC_DRIVER_PRIVATE_DATA));
+ if (Private == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Error;
+ }
+
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiDevicePathProtocolGuid,
+ (VOID **) &ParentDevicePath,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ ASSERT_EFI_ERROR (Status);
+ Private->PassThru = PassThru;
+ Private->Controller = Controller;
+ Private->ParentDevicePath = ParentDevicePath;
+ Private->DriverBindingHandle = This->DriverBindingHandle;
+
+ Status = gBS->InstallProtocolInterface (
+ &Controller,
+ &gEfiCallerIdGuid,
+ EFI_NATIVE_INTERFACE,
+ Private
+ );
+ if (EFI_ERROR (Status)) {
+ goto Error;
+ }
+ } else {
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiCallerIdGuid,
+ (VOID **) &Private,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ if (EFI_ERROR (Status)) {
+ goto Error;
+ }
+ }
+
+ if (RemainingDevicePath == NULL) {
+ Slot = 0xFF;
+ while (TRUE) {
+ Status = PassThru->GetNextSlot (PassThru, &Slot);
+ if (EFI_ERROR (Status)) {
+ //
+ // Cannot find more legal slots.
+ //
+ Status = EFI_SUCCESS;
+ break;
+ }
+
+ Status = DiscoverEmmcDevice (Private, Slot, NULL);
+ if (EFI_ERROR (Status) && (Status != EFI_ALREADY_STARTED)) {
+ break;
+ }
+ }
+ } else if (!IsDevicePathEnd (RemainingDevicePath)) {
+ Status = PassThru->GetSlotNumber (PassThru, RemainingDevicePath, &Slot);
+ if (!EFI_ERROR (Status)) {
+ Status = DiscoverEmmcDevice (Private, Slot, NextDevicePathNode (RemainingDevicePath));
+ }
+ }
+
+Error:
+ if (EFI_ERROR (Status) && (Status != EFI_ALREADY_STARTED)) {
+ gBS->CloseProtocol (
+ Controller,
+ &gEfiSdMmcPassThruProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+
+ if (Private != NULL) {
+ gBS->UninstallMultipleProtocolInterfaces (
+ Controller,
+ &gEfiCallerIdGuid,
+ Private,
+ NULL
+ );
+ FreePool (Private);
+ }
+ }
+ return Status;
+}
+
+/**
+ Stops a device controller or a bus controller.
+
+ The Stop() function is designed to be invoked from the EFI boot service DisconnectController().
+ As a result, much of the error checking on the parameters to Stop() has been moved
+ into this common boot service. It is legal to call Stop() from other locations,
+ but the following calling restrictions must be followed or the system behavior will not be deterministic.
+ 1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this
+ same driver's Start() function.
+ 2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid
+ EFI_HANDLE. In addition, all of these handles must have been created in this driver's
+ Start() function, and the Start() function must have called OpenProtocol() on
+ ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.
+
+ @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
+ @param[in] ControllerHandle A handle to the device being stopped. The handle must
+ support a bus specific I/O protocol for the driver
+ to use to stop the device.
+ @param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.
+ @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL
+ if NumberOfChildren is 0.
+
+ @retval EFI_SUCCESS The device was stopped.
+ @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.
+
+**/
+EFI_STATUS
+EFIAPI
+EmmcDxeDriverBindingStop (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN UINTN NumberOfChildren,
+ IN EFI_HANDLE *ChildHandleBuffer
+ )
+{
+ EFI_STATUS Status;
+ BOOLEAN AllChildrenStopped;
+ UINTN Index;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+ EMMC_DRIVER_PRIVATE_DATA *Private;
+ EMMC_DEVICE *Device;
+ EMMC_PARTITION *Partition;
+ EFI_BLOCK_IO_PROTOCOL *BlockIo;
+ EFI_BLOCK_IO2_PROTOCOL *BlockIo2;
+ EFI_STORAGE_SECURITY_COMMAND_PROTOCOL *StorageSecurity;
+ LIST_ENTRY *Link;
+ LIST_ENTRY *NextLink;
+ EMMC_REQUEST *Request;
+
+ BlockIo = NULL;
+ BlockIo2 = NULL;
+ if (NumberOfChildren == 0) {
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiCallerIdGuid,
+ (VOID **) &Private,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ if (EFI_ERROR (Status)) {
+ return EFI_DEVICE_ERROR;
+ }
+
+ for (Index = 0; Index < EMMC_MAX_DEVICES; Index++) {
+ Device = &Private->Device[Index];
+ Status = gBS->OpenProtocol (
+ Device->Handle,
+ &gEfiDevicePathProtocolGuid,
+ (VOID **) &DevicePath,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ if (EFI_ERROR (Status)) {
+ continue;
+ }
+ ASSERT (DevicePath == Device->DevicePath);
+ gBS->UninstallProtocolInterface (
+ Device->Handle,
+ &gEfiDevicePathProtocolGuid,
+ DevicePath
+ );
+ FreePool (Device->DevicePath);
+ }
+
+ gBS->UninstallProtocolInterface (
+ Controller,
+ &gEfiCallerIdGuid,
+ Private
+ );
+ gBS->CloseProtocol (
+ Controller,
+ &gEfiSdMmcPassThruProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+ FreePool (Private);
+
+ return EFI_SUCCESS;
+ }
+
+ AllChildrenStopped = TRUE;
+
+ for (Index = 0; Index < NumberOfChildren; Index++) {
+ Status = gBS->OpenProtocol (
+ ChildHandleBuffer[Index],
+ &gEfiBlockIoProtocolGuid,
+ (VOID **) &BlockIo,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ if (EFI_ERROR (Status)) {
+ Status = gBS->OpenProtocol (
+ ChildHandleBuffer[Index],
+ &gEfiBlockIo2ProtocolGuid,
+ (VOID **) &BlockIo2,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ if (EFI_ERROR (Status)) {
+ AllChildrenStopped = FALSE;
+ continue;
+ }
+ }
+
+ if (BlockIo != NULL) {
+ Partition = EMMC_PARTITION_DATA_FROM_BLKIO (BlockIo);
+ } else {
+ ASSERT (BlockIo2 != NULL);
+ Partition = EMMC_PARTITION_DATA_FROM_BLKIO2 (BlockIo2);
+ }
+
+ for (Link = GetFirstNode (&Partition->Queue);
+ !IsNull (&Partition->Queue, Link);
+ Link = NextLink) {
+ NextLink = GetNextNode (&Partition->Queue, Link);
+
+ RemoveEntryList (Link);
+ Request = EMMC_REQUEST_FROM_LINK (Link);
+
+ gBS->CloseEvent (Request->Event);
+ Request->Token->TransactionStatus = EFI_ABORTED;
+
+ if (Request->IsEnd) {
+ gBS->SignalEvent (Request->Token->Event);
+ }
+
+ FreePool (Request);
+ }
+
+ //
+ // Close the child handle
+ //
+ Status = gBS->CloseProtocol (
+ Controller,
+ &gEfiSdMmcPassThruProtocolGuid,
+ This->DriverBindingHandle,
+ ChildHandleBuffer[Index]
+ );
+
+ Status = gBS->UninstallMultipleProtocolInterfaces (
+ ChildHandleBuffer[Index],
+ &gEfiDevicePathProtocolGuid,
+ Partition->DevicePath,
+ &gEfiBlockIoProtocolGuid,
+ &Partition->BlockIo,
+ &gEfiBlockIo2ProtocolGuid,
+ &Partition->BlockIo2,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ AllChildrenStopped = FALSE;
+ gBS->OpenProtocol (
+ Controller,
+ &gEfiSdMmcPassThruProtocolGuid,
+ (VOID **)&Partition->Device->Private->PassThru,
+ This->DriverBindingHandle,
+ ChildHandleBuffer[Index],
+ EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
+ );
+ continue;
+ }
+
+ //
+ // If Storage Security Command Protocol is installed, then uninstall this protocol.
+ //
+ Status = gBS->OpenProtocol (
+ ChildHandleBuffer[Index],
+ &gEfiStorageSecurityCommandProtocolGuid,
+ (VOID **) &StorageSecurity,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+
+ if (!EFI_ERROR (Status)) {
+ Status = gBS->UninstallProtocolInterface (
+ ChildHandleBuffer[Index],
+ &gEfiStorageSecurityCommandProtocolGuid,
+ &Partition->StorageSecurity
+ );
+ if (EFI_ERROR (Status)) {
+ gBS->OpenProtocol (
+ Controller,
+ &gEfiSdMmcPassThruProtocolGuid,
+ (VOID **) &Partition->Device->Private->PassThru,
+ This->DriverBindingHandle,
+ ChildHandleBuffer[Index],
+ EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
+ );
+ AllChildrenStopped = FALSE;
+ continue;
+ }
+ }
+
+ FreePool (Partition->DevicePath);
+ }
+
+ if (!AllChildrenStopped) {
+ return EFI_DEVICE_ERROR;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ The user Entry Point for module EmmcDxe. The user code starts with this function.
+
+ @param[in] ImageHandle The firmware allocated handle for the EFI image.
+ @param[in] SystemTable A pointer to the EFI System Table.
+
+ @retval EFI_SUCCESS The entry point is executed successfully.
+ @retval other Some errors occur when executing this entry point.
+
+**/
+EFI_STATUS
+EFIAPI
+InitializeEmmcDxe (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ //
+ // Install driver model protocol(s).
+ //
+ Status = EfiLibInstallDriverBindingComponentName2 (
+ ImageHandle,
+ SystemTable,
+ &gEmmcDxeDriverBinding,
+ ImageHandle,
+ &gEmmcDxeComponentName,
+ &gEmmcDxeComponentName2
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ return Status;
+}
+
|