9252d67ab3
This delay is necessary for eMMC reset to working properly. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Joe Zhou <shjzhou@marvell.com> Signed-off-by: Marcin Wojtas <mw@semihalf.com> Reviewed-by: Feng Tian <feng.tian@intel.com>
1163 lines
38 KiB
C
Executable File
1163 lines
38 KiB
C
Executable File
/** @file
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This file provides some helper functions which are specific for EMMC device.
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Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "SdMmcPciHcDxe.h"
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/**
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Send command GO_IDLE_STATE (CMD0 with argument of 0x00000000) to the device to
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make it go to Idle State.
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Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.
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@param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
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@param[in] Slot The slot number of the SD card to send the command to.
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@retval EFI_SUCCESS The EMMC device is reset correctly.
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@retval Others The device reset fails.
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**/
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EFI_STATUS
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EmmcReset (
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IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,
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IN UINT8 Slot
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)
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{
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EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;
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EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;
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EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;
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EFI_STATUS Status;
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ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
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ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
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ZeroMem (&Packet, sizeof (Packet));
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Packet.SdMmcCmdBlk = &SdMmcCmdBlk;
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Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
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Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;
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SdMmcCmdBlk.CommandIndex = EMMC_GO_IDLE_STATE;
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SdMmcCmdBlk.CommandType = SdMmcCommandTypeBc;
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SdMmcCmdBlk.ResponseType = 0;
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SdMmcCmdBlk.CommandArgument = 0;
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gBS->Stall (1000);
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Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
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return Status;
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}
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/**
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Send command SEND_OP_COND to the EMMC device to get the data of the OCR register.
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Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.
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@param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
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@param[in] Slot The slot number of the SD card to send the command to.
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@param[in, out] Argument On input, the argument of SEND_OP_COND is to send to the device.
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On output, the argument is the value of OCR register.
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@retval EFI_SUCCESS The operation is done correctly.
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@retval Others The operation fails.
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**/
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EFI_STATUS
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EmmcGetOcr (
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IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,
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IN UINT8 Slot,
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IN OUT UINT32 *Argument
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)
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{
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EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;
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EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;
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EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;
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EFI_STATUS Status;
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ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
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ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
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ZeroMem (&Packet, sizeof (Packet));
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Packet.SdMmcCmdBlk = &SdMmcCmdBlk;
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Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
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Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;
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SdMmcCmdBlk.CommandIndex = EMMC_SEND_OP_COND;
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SdMmcCmdBlk.CommandType = SdMmcCommandTypeBcr;
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SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR3;
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SdMmcCmdBlk.CommandArgument = *Argument;
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Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
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if (!EFI_ERROR (Status)) {
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//
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// For details, refer to SD Host Controller Simplified Spec 3.0 Table 2-12.
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//
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*Argument = SdMmcStatusBlk.Resp0;
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}
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return Status;
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}
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/**
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Broadcast command ALL_SEND_CID to the bus to ask all the EMMC devices to send the
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data of their CID registers.
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Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.
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@param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
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@param[in] Slot The slot number of the SD card to send the command to.
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@retval EFI_SUCCESS The operation is done correctly.
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@retval Others The operation fails.
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**/
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EFI_STATUS
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EmmcGetAllCid (
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IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,
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IN UINT8 Slot
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)
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{
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EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;
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EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;
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EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;
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EFI_STATUS Status;
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ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
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ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
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ZeroMem (&Packet, sizeof (Packet));
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Packet.SdMmcCmdBlk = &SdMmcCmdBlk;
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Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
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Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;
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SdMmcCmdBlk.CommandIndex = EMMC_ALL_SEND_CID;
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SdMmcCmdBlk.CommandType = SdMmcCommandTypeBcr;
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SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR2;
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SdMmcCmdBlk.CommandArgument = 0;
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Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
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return Status;
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}
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/**
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Send command SET_RELATIVE_ADDR to the EMMC device to assign a Relative device
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Address (RCA).
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Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.
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@param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
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@param[in] Slot The slot number of the SD card to send the command to.
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@param[in] Rca The relative device address to be assigned.
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@retval EFI_SUCCESS The operation is done correctly.
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@retval Others The operation fails.
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**/
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EFI_STATUS
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EmmcSetRca (
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IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,
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IN UINT8 Slot,
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IN UINT16 Rca
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)
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{
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EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;
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EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;
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EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;
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EFI_STATUS Status;
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ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
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ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
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ZeroMem (&Packet, sizeof (Packet));
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Packet.SdMmcCmdBlk = &SdMmcCmdBlk;
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Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
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Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;
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SdMmcCmdBlk.CommandIndex = EMMC_SET_RELATIVE_ADDR;
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SdMmcCmdBlk.CommandType = SdMmcCommandTypeAc;
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SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;
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SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;
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Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
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return Status;
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}
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/**
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Send command SEND_CSD to the EMMC device to get the data of the CSD register.
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Refer to EMMC Electrical Standard Spec 5.1 Section 6.10.4 for details.
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@param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
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@param[in] Slot The slot number of the SD card to send the command to.
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@param[in] Rca The relative device address of selected device.
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@param[out] Csd The buffer to store the content of the CSD register.
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Note the caller should ignore the lowest byte of this
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buffer as the content of this byte is meaningless even
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if the operation succeeds.
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@retval EFI_SUCCESS The operation is done correctly.
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@retval Others The operation fails.
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**/
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EFI_STATUS
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EmmcGetCsd (
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IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,
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IN UINT8 Slot,
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IN UINT16 Rca,
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OUT EMMC_CSD *Csd
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)
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{
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EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;
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EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;
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EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;
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EFI_STATUS Status;
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ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
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ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
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ZeroMem (&Packet, sizeof (Packet));
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Packet.SdMmcCmdBlk = &SdMmcCmdBlk;
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Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
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Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;
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SdMmcCmdBlk.CommandIndex = EMMC_SEND_CSD;
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SdMmcCmdBlk.CommandType = SdMmcCommandTypeAc;
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SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR2;
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SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;
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Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
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if (!EFI_ERROR (Status)) {
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//
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// For details, refer to SD Host Controller Simplified Spec 3.0 Table 2-12.
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//
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CopyMem (((UINT8*)Csd) + 1, &SdMmcStatusBlk.Resp0, sizeof (EMMC_CSD) - 1);
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}
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return Status;
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}
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/**
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Send command SELECT_DESELECT_CARD to the EMMC device to select/deselect it.
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Refer to EMMC Electrical Standard Spec 5.1 Section 6.10.4 for details.
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@param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
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@param[in] Slot The slot number of the SD card to send the command to.
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@param[in] Rca The relative device address of selected device.
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@retval EFI_SUCCESS The operation is done correctly.
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@retval Others The operation fails.
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**/
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EFI_STATUS
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EmmcSelect (
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IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,
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IN UINT8 Slot,
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IN UINT16 Rca
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)
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{
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EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;
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EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;
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EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;
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EFI_STATUS Status;
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ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
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ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
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ZeroMem (&Packet, sizeof (Packet));
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Packet.SdMmcCmdBlk = &SdMmcCmdBlk;
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Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
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Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;
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SdMmcCmdBlk.CommandIndex = EMMC_SELECT_DESELECT_CARD;
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SdMmcCmdBlk.CommandType = SdMmcCommandTypeAc;
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SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;
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SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;
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Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
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return Status;
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}
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/**
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Send command SEND_EXT_CSD to the EMMC device to get the data of the EXT_CSD register.
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Refer to EMMC Electrical Standard Spec 5.1 Section 6.10.4 for details.
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@param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
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@param[in] Slot The slot number of the SD card to send the command to.
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@param[out] ExtCsd The buffer to store the content of the EXT_CSD register.
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@retval EFI_SUCCESS The operation is done correctly.
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@retval Others The operation fails.
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**/
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EFI_STATUS
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EmmcGetExtCsd (
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IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,
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IN UINT8 Slot,
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OUT EMMC_EXT_CSD *ExtCsd
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)
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{
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EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;
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EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;
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EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;
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EFI_STATUS Status;
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ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
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ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
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ZeroMem (&Packet, sizeof (Packet));
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Packet.SdMmcCmdBlk = &SdMmcCmdBlk;
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Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
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Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;
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SdMmcCmdBlk.CommandIndex = EMMC_SEND_EXT_CSD;
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SdMmcCmdBlk.CommandType = SdMmcCommandTypeAdtc;
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SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;
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SdMmcCmdBlk.CommandArgument = 0x00000000;
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Packet.InDataBuffer = ExtCsd;
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Packet.InTransferLength = sizeof (EMMC_EXT_CSD);
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Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
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return Status;
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}
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/**
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Send command SWITCH to the EMMC device to switch the mode of operation of the
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selected Device or modifies the EXT_CSD registers.
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Refer to EMMC Electrical Standard Spec 5.1 Section 6.10.4 for details.
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@param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
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@param[in] Slot The slot number of the SD card to send the command to.
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@param[in] Access The access mode of SWTICH command.
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@param[in] Index The offset of the field to be access.
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@param[in] Value The value to be set to the specified field of EXT_CSD register.
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@param[in] CmdSet The value of CmdSet field of EXT_CSD register.
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@retval EFI_SUCCESS The operation is done correctly.
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@retval Others The operation fails.
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**/
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EFI_STATUS
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EmmcSwitch (
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IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,
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IN UINT8 Slot,
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IN UINT8 Access,
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IN UINT8 Index,
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IN UINT8 Value,
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IN UINT8 CmdSet
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)
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{
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EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;
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EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;
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EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;
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EFI_STATUS Status;
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ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
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ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
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ZeroMem (&Packet, sizeof (Packet));
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Packet.SdMmcCmdBlk = &SdMmcCmdBlk;
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Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
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Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;
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SdMmcCmdBlk.CommandIndex = EMMC_SWITCH;
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SdMmcCmdBlk.CommandType = SdMmcCommandTypeAc;
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SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1b;
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SdMmcCmdBlk.CommandArgument = (Access << 24) | (Index << 16) | (Value << 8) | CmdSet;
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Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
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return Status;
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}
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/**
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Send command SEND_STATUS to the addressed EMMC device to get its status register.
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Refer to EMMC Electrical Standard Spec 5.1 Section 6.10.4 for details.
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@param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
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@param[in] Slot The slot number of the SD card to send the command to.
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@param[in] Rca The relative device address of addressed device.
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@param[out] DevStatus The returned device status.
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@retval EFI_SUCCESS The operation is done correctly.
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@retval Others The operation fails.
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**/
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EFI_STATUS
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EmmcSendStatus (
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IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,
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IN UINT8 Slot,
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IN UINT16 Rca,
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OUT UINT32 *DevStatus
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)
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{
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EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;
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EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;
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EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;
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EFI_STATUS Status;
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ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
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ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
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ZeroMem (&Packet, sizeof (Packet));
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Packet.SdMmcCmdBlk = &SdMmcCmdBlk;
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Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
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Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;
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SdMmcCmdBlk.CommandIndex = EMMC_SEND_STATUS;
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SdMmcCmdBlk.CommandType = SdMmcCommandTypeAc;
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SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;
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SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;
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Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
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if (!EFI_ERROR (Status)) {
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*DevStatus = SdMmcStatusBlk.Resp0;
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}
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return Status;
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}
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/**
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Send command SEND_TUNING_BLOCK to the EMMC device for HS200 optimal sampling point
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detection.
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It may be sent up to 40 times until the host finishes the tuning procedure.
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Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 for details.
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@param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
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@param[in] Slot The slot number of the SD card to send the command to.
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@param[in] BusWidth The bus width to work.
|
|
|
|
@retval EFI_SUCCESS The operation is done correctly.
|
|
@retval Others The operation fails.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EmmcSendTuningBlk (
|
|
IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,
|
|
IN UINT8 Slot,
|
|
IN UINT8 BusWidth
|
|
)
|
|
{
|
|
EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;
|
|
EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;
|
|
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;
|
|
EFI_STATUS Status;
|
|
UINT8 TuningBlock[128];
|
|
|
|
ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
|
|
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
|
|
ZeroMem (&Packet, sizeof (Packet));
|
|
|
|
Packet.SdMmcCmdBlk = &SdMmcCmdBlk;
|
|
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
|
|
Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;
|
|
|
|
SdMmcCmdBlk.CommandIndex = EMMC_SEND_TUNING_BLOCK;
|
|
SdMmcCmdBlk.CommandType = SdMmcCommandTypeAdtc;
|
|
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;
|
|
SdMmcCmdBlk.CommandArgument = 0;
|
|
|
|
Packet.InDataBuffer = TuningBlock;
|
|
if (BusWidth == 8) {
|
|
Packet.InTransferLength = sizeof (TuningBlock);
|
|
} else {
|
|
Packet.InTransferLength = 64;
|
|
}
|
|
|
|
Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Tunning the clock to get HS200 optimal sampling point.
|
|
|
|
Command SEND_TUNING_BLOCK may be sent up to 40 times until the host finishes the
|
|
tuning procedure.
|
|
|
|
Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 and SD Host Controller
|
|
Simplified Spec 3.0 Figure 2-29 for details.
|
|
|
|
@param[in] PciIo A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
|
|
@param[in] Slot The slot number of the SD card to send the command to.
|
|
@param[in] BusWidth The bus width to work.
|
|
|
|
@retval EFI_SUCCESS The operation is done correctly.
|
|
@retval Others The operation fails.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EmmcTuningClkForHs200 (
|
|
IN EFI_PCI_IO_PROTOCOL *PciIo,
|
|
IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,
|
|
IN UINT8 Slot,
|
|
IN UINT8 BusWidth
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
UINT8 HostCtrl2;
|
|
UINT8 Retry;
|
|
|
|
//
|
|
// Notify the host that the sampling clock tuning procedure starts.
|
|
//
|
|
HostCtrl2 = BIT6;
|
|
Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
//
|
|
// Ask the device to send a sequence of tuning blocks till the tuning procedure is done.
|
|
//
|
|
Retry = 0;
|
|
do {
|
|
Status = EmmcSendTuningBlk (PassThru, Slot, BusWidth);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((EFI_D_ERROR, "EmmcTuningClkForHs200: Send tuning block fails with %r\n", Status));
|
|
return Status;
|
|
}
|
|
|
|
Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, TRUE, sizeof (HostCtrl2), &HostCtrl2);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
if ((HostCtrl2 & (BIT6 | BIT7)) == 0) {
|
|
break;
|
|
}
|
|
|
|
if ((HostCtrl2 & (BIT6 | BIT7)) == BIT7) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
} while (++Retry < 40);
|
|
|
|
DEBUG ((EFI_D_ERROR, "EmmcTuningClkForHs200: Send tuning block fails at %d times with HostCtrl2 %02x\n", Retry, HostCtrl2));
|
|
//
|
|
// Abort the tuning procedure and reset the tuning circuit.
|
|
//
|
|
HostCtrl2 = (UINT8)~(BIT6 | BIT7);
|
|
Status = SdMmcHcAndMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
|
|
/**
|
|
Switch the bus width to specified width.
|
|
|
|
Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.9 and SD Host Controller
|
|
Simplified Spec 3.0 Figure 3-7 for details.
|
|
|
|
@param[in] PciIo A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
|
|
@param[in] Slot The slot number of the SD card to send the command to.
|
|
@param[in] Rca The relative device address to be assigned.
|
|
@param[in] IsDdr If TRUE, use dual data rate data simpling method. Otherwise
|
|
use single data rate data simpling method.
|
|
@param[in] BusWidth The bus width to be set, it could be 4 or 8.
|
|
|
|
@retval EFI_SUCCESS The operation is done correctly.
|
|
@retval Others The operation fails.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EmmcSwitchBusWidth (
|
|
IN EFI_PCI_IO_PROTOCOL *PciIo,
|
|
IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,
|
|
IN UINT8 Slot,
|
|
IN UINT16 Rca,
|
|
IN BOOLEAN IsDdr,
|
|
IN UINT8 BusWidth
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
UINT8 Access;
|
|
UINT8 Index;
|
|
UINT8 Value;
|
|
UINT8 CmdSet;
|
|
UINT32 DevStatus;
|
|
|
|
//
|
|
// Write Byte, the Value field is written into the byte pointed by Index.
|
|
//
|
|
Access = 0x03;
|
|
Index = OFFSET_OF (EMMC_EXT_CSD, BusWidth);
|
|
if (BusWidth == 4) {
|
|
Value = 1;
|
|
} else if (BusWidth == 8) {
|
|
Value = 2;
|
|
} else {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (IsDdr) {
|
|
Value += 4;
|
|
}
|
|
|
|
CmdSet = 0;
|
|
Status = EmmcSwitch (PassThru, Slot, Access, Index, Value, CmdSet);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((EFI_D_ERROR, "EmmcSwitchBusWidth: Switch to bus width %d fails with %r\n", BusWidth, Status));
|
|
return Status;
|
|
}
|
|
|
|
Status = EmmcSendStatus (PassThru, Slot, Rca, &DevStatus);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((EFI_D_ERROR, "EmmcSwitchBusWidth: Send status fails with %r\n", Status));
|
|
return Status;
|
|
}
|
|
//
|
|
// Check the switch operation is really successful or not.
|
|
//
|
|
if ((DevStatus & BIT7) != 0) {
|
|
DEBUG ((EFI_D_ERROR, "EmmcSwitchBusWidth: The switch operation fails as DevStatus is 0x%08x\n", DevStatus));
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
|
|
Status = SdMmcHcSetBusWidth (PciIo, Slot, BusWidth);
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Switch the clock frequency to the specified value.
|
|
|
|
Refer to EMMC Electrical Standard Spec 5.1 Section 6.6 and SD Host Controller
|
|
Simplified Spec 3.0 Figure 3-3 for details.
|
|
|
|
@param[in] PciIo A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
|
|
@param[in] Slot The slot number of the SD card to send the command to.
|
|
@param[in] Rca The relative device address to be assigned.
|
|
@param[in] HsTiming The value to be written to HS_TIMING field of EXT_CSD register.
|
|
@param[in] ClockFreq The max clock frequency to be set, the unit is MHz.
|
|
|
|
@retval EFI_SUCCESS The operation is done correctly.
|
|
@retval Others The operation fails.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EmmcSwitchClockFreq (
|
|
IN EFI_PCI_IO_PROTOCOL *PciIo,
|
|
IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,
|
|
IN UINT8 Slot,
|
|
IN UINT16 Rca,
|
|
IN UINT8 HsTiming,
|
|
IN UINT32 ClockFreq
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
UINT8 Access;
|
|
UINT8 Index;
|
|
UINT8 Value;
|
|
UINT8 CmdSet;
|
|
UINT32 DevStatus;
|
|
SD_MMC_HC_PRIVATE_DATA *Private;
|
|
|
|
Private = SD_MMC_HC_PRIVATE_FROM_THIS (PassThru);
|
|
//
|
|
// Write Byte, the Value field is written into the byte pointed by Index.
|
|
//
|
|
Access = 0x03;
|
|
Index = OFFSET_OF (EMMC_EXT_CSD, HsTiming);
|
|
Value = HsTiming;
|
|
CmdSet = 0;
|
|
|
|
Status = EmmcSwitch (PassThru, Slot, Access, Index, Value, CmdSet);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((EFI_D_ERROR, "EmmcSwitchClockFreq: Switch to hstiming %d fails with %r\n", HsTiming, Status));
|
|
return Status;
|
|
}
|
|
|
|
Status = EmmcSendStatus (PassThru, Slot, Rca, &DevStatus);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((EFI_D_ERROR, "EmmcSwitchClockFreq: Send status fails with %r\n", Status));
|
|
return Status;
|
|
}
|
|
//
|
|
// Check the switch operation is really successful or not.
|
|
//
|
|
if ((DevStatus & BIT7) != 0) {
|
|
DEBUG ((EFI_D_ERROR, "EmmcSwitchClockFreq: The switch operation fails as DevStatus is 0x%08x\n", DevStatus));
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
//
|
|
// Convert the clock freq unit from MHz to KHz.
|
|
//
|
|
Status = SdMmcHcClockSupply (PciIo, Slot, ClockFreq * 1000, Private->Capability[Slot]);
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Switch to the High Speed timing according to request.
|
|
|
|
Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 and SD Host Controller
|
|
Simplified Spec 3.0 Figure 2-29 for details.
|
|
|
|
@param[in] PciIo A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
|
|
@param[in] Slot The slot number of the SD card to send the command to.
|
|
@param[in] Rca The relative device address to be assigned.
|
|
@param[in] ClockFreq The max clock frequency to be set.
|
|
@param[in] IsDdr If TRUE, use dual data rate data simpling method. Otherwise
|
|
use single data rate data simpling method.
|
|
@param[in] BusWidth The bus width to be set, it could be 4 or 8.
|
|
|
|
@retval EFI_SUCCESS The operation is done correctly.
|
|
@retval Others The operation fails.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EmmcSwitchToHighSpeed (
|
|
IN EFI_PCI_IO_PROTOCOL *PciIo,
|
|
IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,
|
|
IN UINT8 Slot,
|
|
IN UINT16 Rca,
|
|
IN UINT32 ClockFreq,
|
|
IN BOOLEAN IsDdr,
|
|
IN UINT8 BusWidth
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
UINT8 HsTiming;
|
|
UINT8 HostCtrl1;
|
|
UINT8 HostCtrl2;
|
|
|
|
Status = EmmcSwitchBusWidth (PciIo, PassThru, Slot, Rca, IsDdr, BusWidth);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
//
|
|
// Set to Hight Speed timing
|
|
//
|
|
HostCtrl1 = BIT2;
|
|
Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL1, sizeof (HostCtrl1), &HostCtrl1);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
//
|
|
// Clean UHS Mode Select field of Host Control 2 reigster before update
|
|
//
|
|
HostCtrl2 = (UINT8)~0x7;
|
|
Status = SdMmcHcAndMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
//
|
|
// Set UHS Mode Select field of Host Control 2 reigster to SDR12/25/50
|
|
//
|
|
if (IsDdr) {
|
|
HostCtrl2 = BIT2;
|
|
} else if (ClockFreq == 52) {
|
|
HostCtrl2 = BIT0;
|
|
} else {
|
|
HostCtrl2 = 0;
|
|
}
|
|
Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
HsTiming = 1;
|
|
Status = EmmcSwitchClockFreq (PciIo, PassThru, Slot, Rca, HsTiming, ClockFreq);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Switch to the HS200 timing according to request.
|
|
|
|
Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 and SD Host Controller
|
|
Simplified Spec 3.0 Figure 2-29 for details.
|
|
|
|
@param[in] PciIo A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
|
|
@param[in] Slot The slot number of the SD card to send the command to.
|
|
@param[in] Rca The relative device address to be assigned.
|
|
@param[in] ClockFreq The max clock frequency to be set.
|
|
@param[in] BusWidth The bus width to be set, it could be 4 or 8.
|
|
|
|
@retval EFI_SUCCESS The operation is done correctly.
|
|
@retval Others The operation fails.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EmmcSwitchToHS200 (
|
|
IN EFI_PCI_IO_PROTOCOL *PciIo,
|
|
IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,
|
|
IN UINT8 Slot,
|
|
IN UINT16 Rca,
|
|
IN UINT32 ClockFreq,
|
|
IN UINT8 BusWidth
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
UINT8 HsTiming;
|
|
UINT8 HostCtrl2;
|
|
UINT16 ClockCtrl;
|
|
|
|
if ((BusWidth != 4) && (BusWidth != 8)) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
Status = EmmcSwitchBusWidth (PciIo, PassThru, Slot, Rca, FALSE, BusWidth);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
//
|
|
// Set to HS200/SDR104 timing
|
|
//
|
|
//
|
|
// Stop bus clock at first
|
|
//
|
|
Status = SdMmcHcStopClock (PciIo, Slot);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
//
|
|
// Clean UHS Mode Select field of Host Control 2 reigster before update
|
|
//
|
|
HostCtrl2 = (UINT8)~0x7;
|
|
Status = SdMmcHcAndMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
//
|
|
// Set UHS Mode Select field of Host Control 2 reigster to SDR104
|
|
//
|
|
HostCtrl2 = BIT0 | BIT1;
|
|
Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
//
|
|
// Wait Internal Clock Stable in the Clock Control register to be 1 before set SD Clock Enable bit
|
|
//
|
|
Status = SdMmcHcWaitMmioSet (
|
|
PciIo,
|
|
Slot,
|
|
SD_MMC_HC_CLOCK_CTRL,
|
|
sizeof (ClockCtrl),
|
|
BIT1,
|
|
BIT1,
|
|
SD_MMC_HC_GENERIC_TIMEOUT
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
//
|
|
// Set SD Clock Enable in the Clock Control register to 1
|
|
//
|
|
ClockCtrl = BIT2;
|
|
Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_CLOCK_CTRL, sizeof (ClockCtrl), &ClockCtrl);
|
|
|
|
HsTiming = 2;
|
|
Status = EmmcSwitchClockFreq (PciIo, PassThru, Slot, Rca, HsTiming, ClockFreq);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
Status = EmmcTuningClkForHs200 (PciIo, PassThru, Slot, BusWidth);
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Switch to the HS400 timing according to request.
|
|
|
|
Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 and SD Host Controller
|
|
Simplified Spec 3.0 Figure 2-29 for details.
|
|
|
|
@param[in] PciIo A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
|
|
@param[in] Slot The slot number of the SD card to send the command to.
|
|
@param[in] Rca The relative device address to be assigned.
|
|
@param[in] ClockFreq The max clock frequency to be set.
|
|
|
|
@retval EFI_SUCCESS The operation is done correctly.
|
|
@retval Others The operation fails.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EmmcSwitchToHS400 (
|
|
IN EFI_PCI_IO_PROTOCOL *PciIo,
|
|
IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,
|
|
IN UINT8 Slot,
|
|
IN UINT16 Rca,
|
|
IN UINT32 ClockFreq
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
UINT8 HsTiming;
|
|
UINT8 HostCtrl2;
|
|
|
|
Status = EmmcSwitchToHS200 (PciIo, PassThru, Slot, Rca, ClockFreq, 8);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
//
|
|
// Set to Hight Speed timing and set the clock frequency to a value less than 52MHz.
|
|
//
|
|
HsTiming = 1;
|
|
Status = EmmcSwitchClockFreq (PciIo, PassThru, Slot, Rca, HsTiming, 52);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
//
|
|
// HS400 mode must use 8 data lines.
|
|
//
|
|
Status = EmmcSwitchBusWidth (PciIo, PassThru, Slot, Rca, TRUE, 8);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
//
|
|
// Clean UHS Mode Select field of Host Control 2 reigster before update
|
|
//
|
|
HostCtrl2 = (UINT8)~0x7;
|
|
Status = SdMmcHcAndMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
//
|
|
// Set UHS Mode Select field of Host Control 2 reigster to HS400
|
|
//
|
|
HostCtrl2 = BIT0 | BIT2;
|
|
Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
HsTiming = 3;
|
|
Status = EmmcSwitchClockFreq (PciIo, PassThru, Slot, Rca, HsTiming, ClockFreq);
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Switch the high speed timing according to request.
|
|
|
|
Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 and SD Host Controller
|
|
Simplified Spec 3.0 Figure 2-29 for details.
|
|
|
|
@param[in] PciIo A pointer to the EFI_PCI_IO_PROTOCOL instance.
|
|
@param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
|
|
@param[in] Slot The slot number of the SD card to send the command to.
|
|
@param[in] Rca The relative device address to be assigned.
|
|
|
|
@retval EFI_SUCCESS The operation is done correctly.
|
|
@retval Others The operation fails.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EmmcSetBusMode (
|
|
IN EFI_PCI_IO_PROTOCOL *PciIo,
|
|
IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,
|
|
IN UINT8 Slot,
|
|
IN UINT16 Rca
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
EMMC_CSD Csd;
|
|
EMMC_EXT_CSD ExtCsd;
|
|
UINT8 HsTiming;
|
|
BOOLEAN IsDdr;
|
|
UINT32 ClockFreq;
|
|
UINT8 BusWidth;
|
|
SD_MMC_HC_PRIVATE_DATA *Private;
|
|
|
|
Private = SD_MMC_HC_PRIVATE_FROM_THIS (PassThru);
|
|
|
|
Status = EmmcGetCsd (PassThru, Slot, Rca, &Csd);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((EFI_D_ERROR, "EmmcSetBusMode: GetCsd fails with %r\n", Status));
|
|
return Status;
|
|
}
|
|
|
|
Status = EmmcSelect (PassThru, Slot, Rca);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((EFI_D_ERROR, "EmmcSetBusMode: Select fails with %r\n", Status));
|
|
return Status;
|
|
}
|
|
|
|
ASSERT (Private->Capability[Slot].BaseClkFreq != 0);
|
|
//
|
|
// Check if the Host Controller support 8bits bus width.
|
|
//
|
|
if (Private->Capability[Slot].BusWidth8 != 0) {
|
|
BusWidth = 8;
|
|
} else {
|
|
BusWidth = 4;
|
|
}
|
|
//
|
|
// Get Deivce_Type from EXT_CSD register.
|
|
//
|
|
Status = EmmcGetExtCsd (PassThru, Slot, &ExtCsd);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((EFI_D_ERROR, "EmmcSetBusMode: GetExtCsd fails with %r\n", Status));
|
|
return Status;
|
|
}
|
|
//
|
|
// Calculate supported bus speed/bus width/clock frequency.
|
|
//
|
|
HsTiming = 0;
|
|
IsDdr = FALSE;
|
|
ClockFreq = 0;
|
|
if (((ExtCsd.DeviceType & (BIT4 | BIT5)) != 0) && (Private->Capability[Slot].Sdr104 != 0)) {
|
|
HsTiming = 2;
|
|
IsDdr = FALSE;
|
|
ClockFreq = 200;
|
|
} else if (((ExtCsd.DeviceType & (BIT2 | BIT3)) != 0) && (Private->Capability[Slot].Ddr50 != 0)) {
|
|
HsTiming = 1;
|
|
IsDdr = TRUE;
|
|
ClockFreq = 52;
|
|
} else if (((ExtCsd.DeviceType & BIT1) != 0) && (Private->Capability[Slot].HighSpeed != 0)) {
|
|
HsTiming = 1;
|
|
IsDdr = FALSE;
|
|
ClockFreq = 52;
|
|
} else if (((ExtCsd.DeviceType & BIT0) != 0) && (Private->Capability[Slot].HighSpeed != 0)) {
|
|
HsTiming = 1;
|
|
IsDdr = FALSE;
|
|
ClockFreq = 26;
|
|
}
|
|
//
|
|
// Check if both of the device and the host controller support HS400 DDR mode.
|
|
//
|
|
if (((ExtCsd.DeviceType & (BIT6 | BIT7)) != 0) && (Private->Capability[Slot].Hs400 != 0)) {
|
|
//
|
|
// The host controller supports 8bits bus.
|
|
//
|
|
ASSERT (BusWidth == 8);
|
|
HsTiming = 3;
|
|
IsDdr = TRUE;
|
|
ClockFreq = 200;
|
|
}
|
|
|
|
if ((ClockFreq == 0) || (HsTiming == 0)) {
|
|
//
|
|
// Continue using default setting.
|
|
//
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
DEBUG ((EFI_D_INFO, "EmmcSetBusMode: HsTiming %d ClockFreq %d BusWidth %d Ddr %a\n", HsTiming, ClockFreq, BusWidth, IsDdr ? "TRUE":"FALSE"));
|
|
|
|
if (HsTiming == 3) {
|
|
//
|
|
// Execute HS400 timing switch procedure
|
|
//
|
|
Status = EmmcSwitchToHS400 (PciIo, PassThru, Slot, Rca, ClockFreq);
|
|
} else if (HsTiming == 2) {
|
|
//
|
|
// Execute HS200 timing switch procedure
|
|
//
|
|
Status = EmmcSwitchToHS200 (PciIo, PassThru, Slot, Rca, ClockFreq, BusWidth);
|
|
} else {
|
|
//
|
|
// Execute High Speed timing switch procedure
|
|
//
|
|
Status = EmmcSwitchToHighSpeed (PciIo, PassThru, Slot, Rca, ClockFreq, IsDdr, BusWidth);
|
|
}
|
|
|
|
DEBUG ((EFI_D_INFO, "EmmcSetBusMode: Switch to %a %r\n", (HsTiming == 3) ? "HS400" : ((HsTiming == 2) ? "HS200" : "HighSpeed"), Status));
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Execute EMMC device identification procedure.
|
|
|
|
Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.
|
|
|
|
@param[in] Private A pointer to the SD_MMC_HC_PRIVATE_DATA instance.
|
|
@param[in] Slot The slot number of the SD card to send the command to.
|
|
|
|
@retval EFI_SUCCESS There is a EMMC card.
|
|
@retval Others There is not a EMMC card.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EmmcIdentification (
|
|
IN SD_MMC_HC_PRIVATE_DATA *Private,
|
|
IN UINT8 Slot
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
EFI_PCI_IO_PROTOCOL *PciIo;
|
|
EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru;
|
|
UINT32 Ocr;
|
|
UINT16 Rca;
|
|
|
|
PciIo = Private->PciIo;
|
|
PassThru = &Private->PassThru;
|
|
|
|
Status = EmmcReset (PassThru, Slot);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((EFI_D_VERBOSE, "EmmcIdentification: Executing Cmd0 fails with %r\n", Status));
|
|
return Status;
|
|
}
|
|
|
|
Ocr = 0;
|
|
do {
|
|
Status = EmmcGetOcr (PassThru, Slot, &Ocr);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((EFI_D_VERBOSE, "EmmcIdentification: Executing Cmd1 fails with %r\n", Status));
|
|
return Status;
|
|
}
|
|
Ocr |= BIT30;
|
|
} while ((Ocr & BIT31) == 0);
|
|
|
|
Status = EmmcGetAllCid (PassThru, Slot);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((EFI_D_VERBOSE, "EmmcIdentification: Executing Cmd2 fails with %r\n", Status));
|
|
return Status;
|
|
}
|
|
//
|
|
// Slot starts from 0 and valid RCA starts from 1.
|
|
// Here we takes a simple formula to calculate the RCA.
|
|
// Don't support multiple devices on the slot, that is
|
|
// shared bus slot feature.
|
|
//
|
|
Rca = Slot + 1;
|
|
Status = EmmcSetRca (PassThru, Slot, Rca);
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((EFI_D_ERROR, "EmmcIdentification: Executing Cmd3 fails with %r\n", Status));
|
|
return Status;
|
|
}
|
|
//
|
|
// Enter Data Tranfer Mode.
|
|
//
|
|
DEBUG ((EFI_D_INFO, "EmmcIdentification: Found a EMMC device at slot [%d], RCA [%d]\n", Slot, Rca));
|
|
Private->Slot[Slot].CardType = EmmcCardType;
|
|
|
|
Status = EmmcSetBusMode (PciIo, PassThru, Slot, Rca);
|
|
|
|
return Status;
|
|
}
|
|
|