REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3851
When the UFS card comes out of Manufacturer, bRefClkFreq attribute is set
to 1h on the UFS card as per the "MDV” (Manufacturer Default Value)
specified by the spec JESD220*. However, depends on the UFS host system
environment, it need to be set to correct value.
Reference Clock Frequency value
0h:19.2 MHz
1h: 26 MHz
2h: 38.4 MHz
3h: Obsolete
Others: Reserved
Cc: Wu Hao A <hao.a...@intel.com>
Cc: Albecki Mateusz <mateusz.albe...@intel.com>
Cc: Liming Gao <gaolim...@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang....@intel.com>
Signed-off-by: Purna Chandra Rao Bandaru <purna.chandra.rao.band...@intel.com>
---
.../Bus/Ufs/UfsPassThruDxe/UfsPassThru.c | 50 ++++++++++++++++++-
.../Bus/Ufs/UfsPassThruDxe/UfsPassThruHci.c | 10 +---
.../Protocol/UfsHostControllerPlatform.h | 15 +++++-
3 files changed, 63 insertions(+), 12 deletions(-)
diff --git a/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.c
b/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.c
index 4c2d6ae27f..638b14b0c1 100644
--- a/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.c
+++ b/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.c
@@ -1,6 +1,6 @@
/** @file
- Copyright (c) 2014 - 2021, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2014 - 2022, Intel Corporation. All rights reserved.<BR>
Copyright (c) Microsoft Corporation.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -843,6 +843,8 @@ UfsPassThruDriverBindingStart (
UFS_DEV_DESC DeviceDescriptor;
UINT32 UnitDescriptorSize;
UINT32 DeviceDescriptorSize;
+ EDKII_UFS_CARD_REF_CLK_FREQ_ATTRIBUTE Attributes;
+ UINT8 RefClkAttr;
Status = EFI_SUCCESS;
UfsHc = NULL;
@@ -916,6 +918,52 @@ UfsPassThruDriverBindingStart (
DEBUG ((DEBUG_ERROR, "Ufs Host Controller Initialization Error, Status =
%r\n", Status));
goto Error;
}
+ if ((mUfsHcPlatform != NULL) &&
+ ((mUfsHcPlatform->RefClkFreq == EdkiiUfsCardRefClkFreq19p2Mhz) ||
+ (mUfsHcPlatform->RefClkFreq == EdkiiUfsCardRefClkFreq26Mhz) ||
+ (mUfsHcPlatform->RefClkFreq == EdkiiUfsCardRefClkFreq38p4Mhz))) {
+ RefClkAttr = UfsAttrRefClkFreq;
+ Attributes = EdkiiUfsCardRefClkFreqObsolete;
+ Status = UfsRwAttributes (Private, TRUE, RefClkAttr, 0, 0, (UINT32 *)
&Attributes);
+ if (!EFI_ERROR (Status)) {
+ if (Attributes != mUfsHcPlatform->RefClkFreq) {
+ Attributes = mUfsHcPlatform->RefClkFreq;
+ DEBUG (
+ (DEBUG_INFO,
+ "Setting bRefClkFreq attribute(%x) to %x\n 0 -> 19.2 Mhz\n 1 -> 26
Mhz\n 2 -> 38.4 Mhz\n 3 -> Obsolete\n",
+ RefClkAttr,
+ Attributes)
+ );
+ Status = UfsRwAttributes (Private, FALSE, RefClkAttr, 0, 0, (UINT32 *)
&Attributes);
+ if (EFI_ERROR (Status)) {
+ DEBUG (
+ (DEBUG_ERROR,
+ "Failed to Change Reference Clock Attribute to %d, Status = %r \n",
+ mUfsHcPlatform->RefClkFreq,
+ Status)
+ );
+ }
+ }
+ } else {
+ DEBUG (
+ (DEBUG_ERROR,
+ "Failed to Read Reference Clock Attribute, Status = %r \n",
+ Status)
+ );
+ }
+ }
+
+ if ((mUfsHcPlatform != NULL) && (mUfsHcPlatform->Callback != NULL)) {
+ Status = mUfsHcPlatform->Callback (Private->Handle,
EdkiiUfsHcPostLinkStartup, &Private->UfsHcDriverInterface);
+ if (EFI_ERROR (Status)) {
+ DEBUG (
+ (DEBUG_ERROR,
+ "Failure from platform driver during EdkiiUfsHcPostLinkStartup, Status
= %r\n",
+ Status)
+ );
+ return Status;
+ }
+ }
//
// UFS 2.0 spec Section 13.1.3.3:
diff --git a/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThruHci.c
b/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThruHci.c
index eba35cc669..4a9fa01e7d 100644
--- a/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThruHci.c
+++ b/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThruHci.c
@@ -2,7 +2,7 @@
UfsPassThruDxe driver is used to produce EFI_EXT_SCSI_PASS_THRU protocol
interface
for upper layer application to execute UFS-supported SCSI cmds.
- Copyright (c) 2014 - 2019, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2014 - 2022, Intel Corporation. All rights reserved.<BR>
Copyright (c) Microsoft Corporation.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -1970,14 +1970,6 @@ UfsDeviceDetection (
return EFI_DEVICE_ERROR;
}
} else {
- if ((mUfsHcPlatform != NULL) && (mUfsHcPlatform->Callback != NULL)) {
- Status = mUfsHcPlatform->Callback (Private->Handle,
EdkiiUfsHcPostLinkStartup, &Private->UfsHcDriverInterface);
- if (EFI_ERROR (Status)) {
- DEBUG ((DEBUG_ERROR, "Failure from platform driver during
EdkiiUfsHcPostLinkStartup, Status = %r\n", Status));
- return Status;
- }
- }
-
return EFI_SUCCESS;
}
}
diff --git a/MdeModulePkg/Include/Protocol/UfsHostControllerPlatform.h
b/MdeModulePkg/Include/Protocol/UfsHostControllerPlatform.h
index faa82d0c4e..32e9f6488c 100644
--- a/MdeModulePkg/Include/Protocol/UfsHostControllerPlatform.h
+++ b/MdeModulePkg/Include/Protocol/UfsHostControllerPlatform.h
@@ -1,7 +1,7 @@
/** @file
EDKII_UFS_HC_PLATFORM_PROTOCOL definition.
-Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2019 - 2022, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@@ -11,7 +11,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
#include <Protocol/UfsHostController.h>
-#define EDKII_UFS_HC_PLATFORM_PROTOCOL_VERSION 1
+#define EDKII_UFS_HC_PLATFORM_PROTOCOL_VERSION 2
extern EFI_GUID gEdkiiUfsHcPlatformProtocolGuid;
@@ -83,6 +83,13 @@ typedef enum {
EdkiiUfsHcPostLinkStartup
} EDKII_UFS_HC_PLATFORM_CALLBACK_PHASE;
+typedef enum {
+ EdkiiUfsCardRefClkFreq19p2Mhz,
+ EdkiiUfsCardRefClkFreq26Mhz,
+ EdkiiUfsCardRefClkFreq38p4Mhz,
+ EdkiiUfsCardRefClkFreqObsolete
+} EDKII_UFS_CARD_REF_CLK_FREQ_ATTRIBUTE;
+
/**
Callback function for platform driver.
@@ -118,6 +125,10 @@ struct _EDKII_UFS_HC_PLATFORM_PROTOCOL {
/// for host controller.
///
EDKII_UFS_HC_PLATFORM_CALLBACK Callback;
+ ///
+ /// Reference Clock Frequency Ufs Card Attribute that need to be set in this
Ufs Host Environment.
+ ///
+ EDKII_UFS_CARD_REF_CLK_FREQ_ATTRIBUTE RefClkFreq;
};
#endif
--
2.31.1.windows.1
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