[edk2-devel] [PATCH v3 5/7] MdePkg: Bootable NVDIMM namespaces

[Zhiguang Liu]

Reviewed-by: Zhiguang Liu <zhiguang.liu at intel.com>

-----Original Message-----
From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of Oleksiy Yakovlev
Sent: Friday, May 8, 2020 3:14 AM
To: devel at edk2.groups.io
Cc: Feng, Bob C <bob.c.feng at intel.com>; Gao, Liming <liming.gao at intel.com>; Kinney, Michael D <michael.d.kinney at intel.com>; Felixp at ami.com; oleksiyy at ami.com
Subject: [edk2-devel] [PATCH v3 5/7] MdePkg: Bootable NVDIMM namespaces

Provided a mechanism for UEFI FW to identify and hand off bootable NVDIMM namespaces to the OS by standardizing the EFI device path.
EFI device path for physical NVDIMM devices changed from an ACPI _ADR device to an ACPI NVDIMM device for correctness.
(UEFI 2.8 mantis 1858)

Signed-off-by: Oleksiy Yakovlev <oleksiyy at ami.com>
---
 MdePkg/Include/Protocol/DevicePath.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/MdePkg/Include/Protocol/DevicePath.h b/MdePkg/Include/Protocol/DevicePath.h
index aaec0a6..c1f8352 100644
--- a/MdePkg/Include/Protocol/DevicePath.h
+++ b/MdePkg/Include/Protocol/DevicePath.h
@@ -712,6 +712,18 @@ typedef struct {
   UINT8                           StopBits;
 } UART_DEVICE_PATH;
 
+///
+/// NVDIMM Namespace Device Path SubType.
+///
+#define NVDIMM_NAMESPACE_DP               0x20
+typedef struct {
+  EFI_DEVICE_PATH_PROTOCOL        Header;
+  ///
+  /// Namespace unique label identifier UUID.
+  ///
+  EFI_GUID Uuid;
+} NVDIMM_NAMESPACE_DEVICE_PATH;
+
 //
 // Use VENDOR_DEVICE_PATH struct
 //
--
2.9.0.windows.1


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