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.kin...@intel.com>
Cc: Jiewen Yao <jiewen....@intel.com>
Cc: Jian J Wang <jian.j.w...@intel.com>
Cc: Liming Gao <liming....@intel.com>
Signed-off-by: Christopher J Zurcher <christopher.j.zurc...@intel.com>
---
MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.c | 17 ++++++++++++++++-
1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.c
b/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.c
index b12404aacb..26c5a8b855 100644
--- a/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.c
+++ b/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.c
@@ -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
//
--
2.16.2.windows.1
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