Suggest to use " SMM Memory Attribute Protocol " instead of " EFI SMM Memory
Attribute Protocol " in the comments.
Should "+ IN UINT64 *Attributes" be "+ OUT
UINT64 *Attributes" for
EDKII_SMM_GET_MEMORY_ATTRIBUTES?
Thanks,
Star
-----Original Message-----
From: Wang, Jian J
Sent: Friday, October 27, 2017 2:12 PM
To: edk2-devel@lists.01.org
Cc: Zeng, Star <star.z...@intel.com>; Dong, Eric <eric.d...@intel.com>; Yao,
Jiewen <jiewen....@intel.com>; Ni, Ruiyu <ruiyu...@intel.com>
Subject: [PATCH v4 2/7] MdeModulePkg/SmmMemoryAttribute.h: Add new protocol
definitions
The new protocol gEdkiiSmmMemoryAttributeProtocolGuid is intended for PiSmmCore
to be able to change memory page attributes for the sake of heap guard feature.
This protocol provides three interfaces to get/set/clear page attribute.
struct _EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL {
EDKII_SMM_GET_MEMORY_ATTRIBUTES GetMemoryAttributes;
EDKII_SMM_SET_MEMORY_ATTRIBUTES SetMemoryAttributes;
EDKII_SMM_CLEAR_MEMORY_ATTRIBUTES ClearMemoryAttributes;
};
Cc: Star Zeng <star.z...@intel.com>
Cc: Eric Dong <eric.d...@intel.com>
Cc: Jiewen Yao <jiewen....@intel.com>
Cc: Ruiyu Ni <ruiyu...@intel.com>
Suggested-by: Ayellet Wolman <ayellet.wol...@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jian J Wang <jian.j.w...@intel.com>
---
MdeModulePkg/Include/Protocol/SmmMemoryAttribute.h | 136 +++++++++++++++++++++
1 file changed, 136 insertions(+)
create mode 100644 MdeModulePkg/Include/Protocol/SmmMemoryAttribute.h
diff --git a/MdeModulePkg/Include/Protocol/SmmMemoryAttribute.h
b/MdeModulePkg/Include/Protocol/SmmMemoryAttribute.h
new file mode 100644
index 0000000000..20e145c2dc
--- /dev/null
+++ b/MdeModulePkg/Include/Protocol/SmmMemoryAttribute.h
@@ -0,0 +1,136 @@
+/** @file
+ EFI SMM Memory Attribute Protocol provides retrieval and update
+service
+ for memory attributes in EFI SMM environment.
+
+ Copyright (c) 2017, Intel Corporation. All rights reserved.<BR> This
+ program and the accompanying materials are licensed and made
+ available under the terms and conditions of the BSD License which
+ accompanies this distribution. The full text of the license may be
+ found at http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef __SMM_MEMORYATTRIBUTE_H__
+#define __SMM_MEMORYATTRIBUTE_H__
+
+//{69B792EA-39CE-402D-A2A6-F721DE351DFE}
+#define EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL_GUID \
+ { \
+ 0x69b792ea, 0x39ce, 0x402d, { 0xa2, 0xa6, 0xf7, 0x21, 0xde, 0x35,
+0x1d, 0xfe } \
+ }
+
+typedef struct _EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL
+EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL;
+
+/**
+ This function set given attributes of the memory region specified by
+ BaseAddress and Length.
+
+ @param This The EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL instance.
+ @param BaseAddress The physical address that is the start address of
+ a memory region.
+ @param Length The size in bytes of the memory region.
+ @param Attributes The bit mask of attributes to set for the memory
+ region.
+
+ @retval EFI_SUCCESS The attributes were set for the memory region.
+ @retval EFI_INVALID_PARAMETER Length is zero.
+ Attributes specified an illegal combination of
+ attributes that cannot be set together.
+ @retval EFI_UNSUPPORTED The processor does not support one or more
+ bytes of the memory resource range specified
+ by BaseAddress and Length.
+ The bit mask of attributes is not support for
+ the memory resource range specified by
+ BaseAddress and Length.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EDKII_SMM_SET_MEMORY_ATTRIBUTES)(
+ IN EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL *This,
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length,
+ IN UINT64 Attributes
+ );
+
+/**
+ This function clears given attributes of the memory region specified
+by
+ BaseAddress and Length.
+
+ @param This The EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL instance.
+ @param BaseAddress The physical address that is the start address of
+ a memory region.
+ @param Length The size in bytes of the memory region.
+ @param Attributes The bit mask of attributes to set for the memory
+ region.
+
+ @retval EFI_SUCCESS The attributes were set for the memory region.
+ @retval EFI_INVALID_PARAMETER Length is zero.
+ Attributes specified an illegal combination of
+ attributes that cannot be set together.
+ @retval EFI_UNSUPPORTED The processor does not support one or more
+ bytes of the memory resource range specified
+ by BaseAddress and Length.
+ The bit mask of attributes is not support for
+ the memory resource range specified by
+ BaseAddress and Length.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EDKII_SMM_CLEAR_MEMORY_ATTRIBUTES)(
+ IN EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL *This,
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length,
+ IN UINT64 Attributes
+ );
+
+/**
+ This function retrieve the attributes of the memory region specified
+by
+ BaseAddress and Length. If different attributes are got from
+different part
+ of the memory region, EFI_NO_MAPPING will be returned.
+
+ @param This The EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL instance.
+ @param BaseAddress The physical address that is the start address of
+ a memory region.
+ @param Length The size in bytes of the memory region.
+ @param Attributes Pointer to attributes returned.
+
+ @retval EFI_SUCCESS The attributes got for the memory region.
+ @retval EFI_INVALID_PARAMETER Length is zero.
+ Attributes is NULL.
+ @retval EFI_NO_MAPPING Attributes are not consistent cross the memory
+ region.
+ @retval EFI_UNSUPPORTED The processor does not support one or more
+ bytes of the memory resource range specified
+ by BaseAddress and Length.
+ The bit mask of attributes is not support for
+ the memory resource range specified by
+ BaseAddress and Length.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EDKII_SMM_GET_MEMORY_ATTRIBUTES)(
+ IN EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL *This,
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length,
+ IN UINT64 *Attributes
+ );
+
+///
+/// EFI SMM Memory Attribute Protocol provides services to retrieve or
+update /// memory attribute in the EFI SMM environment.
+///
+struct _EDKII_SMM_MEMORY_ATTRIBUTE_PROTOCOL {
+ EDKII_SMM_GET_MEMORY_ATTRIBUTES GetMemoryAttributes;
+ EDKII_SMM_SET_MEMORY_ATTRIBUTES SetMemoryAttributes;
+ EDKII_SMM_CLEAR_MEMORY_ATTRIBUTES ClearMemoryAttributes;
+};
+
+extern EFI_GUID gEdkiiSmmMemoryAttributeProtocolGuid;
+
+#endif
--
2.14.1.windows.1
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