-----Original Message-----
From: Chevron Li <chevron.li@...>
Sent: Tuesday, December 6, 2022 8:53 PM
To: devel@edk2.groups.io
Cc: Wu, Hao A <hao.a.wu@...>; Ni, Ray <ray.ni@...>; Wang,
Jian J <jian.j.wang@...>; Gao, Liming <gaoliming@...>;
shirley.her@...; shaper.liu@...;
xiaoguang.yu@...; Chevron Li (WH)
<chevron.li@...>
Subject: [edk2-platform][PATCH V2 1/1] MdeModulePkg: SdMmcPciHcDxe:
Fix issue that SD1.0 cards can't be recognized

From: "Chevron Li (WH)" <chevron.li@...>


SD1.0 cards don't support CMD8 and CMD6

CMD8 result can be used to distinguish the card is SD1.0 or not.

CMD8 result can be used to decide following CMD6 is sent or skip.



Cc: Hao A Wu <hao.a.wu@...>

Cc: Ray Ni <ray.ni@...>

Cc: Jian J Wang <jian.j.wang@...>

Cc: Liming Gao <gaoliming@...>

Signed-off-by: Chevron Li <chevron.li@...>

---

Changes in V2:

1.Update description comment for input parameter 'SdVersion1'.

2.Add variables initialize operation to avoid unexpected value.

3.Use TRUE replace with 1 to assign value for BOOLEAN variable.

---

MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c | 34 +++++++++++++--
----

1 file changed, 24 insertions(+), 10 deletions(-)



diff --git a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c
b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c

index f5a3607e47..262f675ea2 100644

--- a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c

+++ b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c

@@ -1074,6 +1074,7 @@ SdGetTargetBusMode (

@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] S18A The boolean to show if it's a UHS-I SD card.

+ @param[in] SdVersion1 The boolean to show if it's a Version 1 SD card.



@retval EFI_SUCCESS The operation is done correctly.

@retval Others The operation fails.

@@ -1085,7 +1086,8 @@ SdCardSetBusMode (

IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,

IN UINT8 Slot,

IN UINT16 Rca,

- IN BOOLEAN S18A

+ IN BOOLEAN S18A,

+ IN BOOLEAN SdVersion1

)

{

EFI_STATUS Status;

@@ -1095,6 +1097,8 @@ SdCardSetBusMode (

SD_MMC_HC_PRIVATE_DATA *Private;

SD_MMC_BUS_SETTINGS BusMode;



+ ZeroMem (SwitchResp, 64 * sizeof (SwitchResp));

+

Private = SD_MMC_HC_PRIVATE_FROM_THIS (PassThru);



Capability = &Private->Capability[Slot];

@@ -1117,10 +1121,13 @@ SdCardSetBusMode (



//

// Get the supported bus speed from SWITCH cmd return data group #1.

+ // SdVersion1 don't support the SWITCH cmd

//

- Status = SdCardSwitch (PassThru, Slot, 0xFF, 0xF, SdDriverStrengthIgnore,
0xF, FALSE, SwitchResp);

- if (EFI_ERROR (Status)) {

- return Status;

+ if(SdVersion1 == FALSE) {

+ Status = SdCardSwitch (PassThru, Slot, 0xFF, 0xF, SdDriverStrengthIgnore,
0xF, FALSE, SwitchResp);

+ if (EFI_ERROR (Status)) {

+ return Status;

+ }

}



SdGetTargetBusMode (Private, Slot, SwitchResp, S18A, &BusMode);

@@ -1141,9 +1148,14 @@ SdCardSetBusMode (

}

}



- Status = SdCardSwitch (PassThru, Slot, BusMode.BusTiming, 0xF,
BusMode.DriverStrength.Sd, 0xF, TRUE, SwitchResp);

- if (EFI_ERROR (Status)) {

- return Status;

+ //

+ // SdVersion1 don't support the SWITCH cmd

+ //

+ if(SdVersion1 == FALSE){

+ Status = SdCardSwitch (PassThru, Slot, BusMode.BusTiming, 0xF,
BusMode.DriverStrength.Sd, 0xF, TRUE, SwitchResp);

+ if (EFI_ERROR (Status)) {

+ return Status;

+ }

}



Status = SdMmcSetDriverStrength (Private->PciIo, Slot,
BusMode.DriverStrength.Sd);

@@ -1214,8 +1226,10 @@ SdCardIdentification (

UINT8 HostCtrl2;

UINTN Retry;

BOOLEAN ForceVoltage33;

+ BOOLEAN SdVersion1;



ForceVoltage33 = FALSE;

+ SdVersion1 = FALSE;



PciIo = Private->PciIo;

PassThru = &Private->PassThru;

@@ -1231,12 +1245,12 @@ Voltage33Retry:

}



//

- // 2. Send Cmd8 to the device

+ // 2. Send Cmd8 to the device, the command will fail for SdVersion1;

//

Status = SdCardVoltageCheck (PassThru, Slot, 0x1, 0xFF);

if (EFI_ERROR (Status)) {

+ SdVersion1 = TRUE;

DEBUG ((DEBUG_INFO, "SdCardIdentification: Executing Cmd8 fails
with %r\n", Status));

- return Status;

}



//

@@ -1426,7 +1440,7 @@ Voltage33Retry:

DEBUG ((DEBUG_INFO, "SdCardIdentification: Found a SD device at slot
[%d]\n", Slot));

Private->Slot[Slot].CardType = SdCardType;



- Status = SdCardSetBusMode (PciIo, PassThru, Slot, Rca, ((Ocr & BIT24) !=
0));

+ Status = SdCardSetBusMode (PciIo, PassThru, Slot, Rca, ((Ocr & BIT24) != 0),
SdVersion1);



return Status;





base-commit: 7bee2498910a9034faaf90802c49188afb7582dc

--

2.18.0.windows.1