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MdeModulePkg/UfsPassThruDxe: Check for RPMB W-LUN (SecurityLun) 

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=1546

Currently UfsPassThru only checks for 8 common LUNs. This adds a check
for the RPMB Well-known LUN and sets the corresponding bit-mask. Further
handling of the WLUN is already present in the driver.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Christopher J Zurcher <christopher.j.zurcher@intel.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
This commit is contained in:
Zurcher, Christopher J 2019-09-27 10:19:58 +08:00 committed by Hao A Wu
parent 9b14509b16
commit 43bb4e379b
1 changed files with 16 additions and 1 deletions
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17
MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.c
View File

@ -822,7 +822,9 @@ UfsPassThruDriverBindingStart (
UINTN UfsHcBase;
UINT32 Index;
UFS_UNIT_DESC UnitDescriptor;
UFS_DEV_DESC DeviceDescriptor;
UINT32 UnitDescriptorSize;
UINT32 DeviceDescriptorSize;
Status = EFI_SUCCESS;
UfsHc = NULL;
@ -916,7 +918,6 @@ UfsPassThruDriverBindingStart (
//
// Check if 8 common luns are active and set corresponding bit mask.
// TODO: Parse device descriptor to decide if exposing RPMB LUN to upper layer for authentication access.
//
UnitDescriptorSize = sizeof (UFS_UNIT_DESC);
for (Index = 0; Index < 8; Index++) {
@ -931,6 +932,20 @@ UfsPassThruDriverBindingStart (
}
}
//
// Check if RPMB WLUN is supported and set corresponding bit mask.
//
DeviceDescriptorSize = sizeof (UFS_DEV_DESC);
Status = UfsRwDeviceDesc (Private, TRUE, UfsDeviceDesc, 0, 0, &DeviceDescriptor, &DeviceDescriptorSize);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "Failed to read device descriptor, status = %r\n", Status));
} else {
if (DeviceDescriptor.SecurityLun == 0x1) {
DEBUG ((DEBUG_INFO, "UFS WLUN RPMB is supported\n"));
Private->Luns.BitMask |= BIT11;
}
}
//
// Start the asynchronous interrupt monitor
//