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| author | rsun3 <rsun3@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-09-01 07:58:24 +0000 |
|---|---|---|
| committer | rsun3 <rsun3@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-09-01 07:58:24 +0000 |
| commit | 709f55c0239dc59e2b16ffe442436e2d46dd4102 (patch) | |
| tree | e5f3504a2e510d3a51f8cca08f601fb9a07b61f1 /MdePkg | |
| parent | 82eea366b7963d1af84da17bad91b90d19868c85 (diff) | |
| download | edk2-709f55c0239dc59e2b16ffe442436e2d46dd4102.zip edk2-709f55c0239dc59e2b16ffe442436e2d46dd4102.tar.gz edk2-709f55c0239dc59e2b16ffe442436e2d46dd4102.tar.bz2 | |
Add into MdePkg definitions for EFI SMM Communication Protocol as defined in the PI 1.2 specification.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9218 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg')
| -rw-r--r-- | MdePkg/Include/Protocol/SmmCommunication.h | 79 | ||||
| -rw-r--r-- | MdePkg/MdePkg.dec | 3 |
2 files changed, 82 insertions, 0 deletions
diff --git a/MdePkg/Include/Protocol/SmmCommunication.h b/MdePkg/Include/Protocol/SmmCommunication.h new file mode 100644 index 0000000..f2cbecf --- /dev/null +++ b/MdePkg/Include/Protocol/SmmCommunication.h @@ -0,0 +1,79 @@ +/** @file
+ EFI SMM Communication Protocol as defined in the PI 1.2 specification.
+
+ This protocol provides a means of communicating between drivers outside of SMM and SMI
+ handlers inside of SMM.
+
+ Copyright (c) 2009, Intel Corporation
+ All rights reserved. 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_COMMUNICATION_H_
+#define _SMM_COMMUNICATION_H_
+
+#define EFI_SMM_COMMUNICATION_PROTOCOL_GUID \
+ { \
+ 0xc68ed8e2, 0x9dc6, 0x4cbd, { 0x9d, 0x94, 0xdb, 0x65, 0xac, 0xc5, 0xc3, 0x32 } \
+ }
+
+///
+/// To avoid confusion in interpreting frames, the communication buffer should always
+/// begin with EFI_SMM_COMMUNICATE_HEADER
+///
+typedef struct {
+ ///
+ /// Allows for disambiguation of the message format.
+ ///
+ EFI_GUID HeaderGuid;
+ ///
+ /// Describes the size of Data (in bytes) and does not include the size of the header.
+ ///
+ UINTN MessageLength;
+ ///
+ /// Designates an array of bytes that is MessageLength in size.
+ ///
+ UINT8 Data[1];
+} EFI_SMM_COMMUNICATE_HEADER;
+
+typedef struct _EFI_SMM_COMMUNICATION_PROTOCOL EFI_SMM_COMMUNICATION_PROTOCOL;
+
+/**
+ Communicates with a registered handler.
+
+ This function provides a service to send and receive messages from a registered UEFI service.
+
+ @param[in] This The EFI_SMM_COMMUNICATION_PROTOCOL instance.
+ @param[in] CommBuffer A pointer to the buffer to convey into SMRAM.
+ @param[in] CommSize The size of the data buffer being passed in.On exit, the size of data
+ being returned. Zero if the handler does not wish to reply with any data.
+
+ @retval EFI_SUCCESS The message was successfully posted.
+ @retval EFI_INVALID_PARAMETER The CommBuffer was NULL.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_SMM_COMMUNICATE)(
+ IN CONST EFI_SMM_COMMUNICATION_PROTOCOL *This,
+ IN OUT VOID *CommBuffer,
+ IN OUT UINTN *CommSize
+ );
+
+///
+/// EFI SMM Communication Protocol provides runtime services for communicating
+/// between DXE drivers and a registered SMI handler.
+///
+struct _EFI_SMM_COMMUNICATION_PROTOCOL {
+ EFI_SMM_COMMUNICATE Communicate;
+};
+
+extern EFI_GUID gEfiSmmCommunicationProtocolGuid;
+
+#endif
+
diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec index 835fa98..c3e77cb 100644 --- a/MdePkg/MdePkg.dec +++ b/MdePkg/MdePkg.dec @@ -596,6 +596,9 @@ ## Include/Protocol/DxeSmmReadyToLock.h
gEfiDxeSmmReadyToLockProtocolGuid = { 0x60ff8964, 0xe906, 0x41d0, { 0xaf, 0xed, 0xf2, 0x41, 0xe9, 0x74, 0xe0, 0x8e }}
+ ## Include/Protocol/SmmCommunication.h
+ gEfiSmmCommunicationProtocolGuid = { 0xc68ed8e2, 0x9dc6, 0x4cbd, { 0x9d, 0x94, 0xdb, 0x65, 0xac, 0xc5, 0xc3, 0x32 }}
+
#
# Protocols defined in UEFI2.1/UEFI2.0/EFI1.1
#
|