diff options
| author | yshang1 <yshang1@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-06-13 11:11:23 +0000 |
|---|---|---|
| committer | yshang1 <yshang1@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-06-13 11:11:23 +0000 |
| commit | 5879b8754ac3c2e7a141bac79f6b2391e6ac0441 (patch) | |
| tree | 666d4f1751a457ea8b67905541239b35530d0569 /MdePkg/Include/Ppi/Stall.h | |
| parent | 959ccb23c6a14797ecaf5990bd5906b4b05a9b75 (diff) | |
| download | edk2-platforms-5879b8754ac3c2e7a141bac79f6b2391e6ac0441.tar.xz | |
Add PPI definitions introduced in PI1.0.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2650 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Include/Ppi/Stall.h')
| -rw-r--r-- | MdePkg/Include/Ppi/Stall.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/MdePkg/Include/Ppi/Stall.h b/MdePkg/Include/Ppi/Stall.h new file mode 100644 index 0000000000..b608f3af11 --- /dev/null +++ b/MdePkg/Include/Ppi/Stall.h @@ -0,0 +1,69 @@ +/** @file
+ This file declares Stall PPI.
+
+ This code abstracts the PEI core to provide Stall services.
+
+ Copyright (c) 2006 - 2007, 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.
+
+ Module Name: Stall.h
+
+ @par Revision Reference:
+ This PPI is defined in PI.
+ Version 1.00.
+
+**/
+
+#ifndef __STALL_PPI_H__
+#define __STALL_PPI_H__
+
+#define EFI_PEI_STALL_PPI_GUID \
+ { 0x1f4c6f90, 0xb06b, 0x48d8, {0xa2, 0x01, 0xba, 0xe5, 0xf1, 0xcd, 0x7d, 0x56 } }
+
+typedef struct _EFI_PEI_STALL_PPI EFI_PEI_STALL_PPI;
+
+/**
+ The Stall() function provides a blocking stall for at least the number
+ of microseconds stipulated in the final argument of the API.
+
+ @param PeiServices An indirect pointer to the PEI Services Table
+ published by the PEI Foundation.
+ @param This Pointer to the local data for the interface.
+ @param Microseconds Number of microseconds for which to stall.
+
+ @retval EFI_SUCCESS The service provided at least the required delay.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PEI_STALL) (
+ IN EFI_PEI_SERVICES **PeiServices,
+ IN EFI_PEI_STALL_PPI *This,
+ IN UINTN Microseconds
+ );
+
+/**
+ @par Ppi Description:
+ This service provides a simple, blocking stall with platform-specific resolution.
+
+ @param Resolution
+ The resolution in microseconds of the stall services.
+
+ @param Stall
+ The actual stall procedure call.
+
+**/
+struct _EFI_PEI_STALL_PPI {
+ UINTN Resolution;
+ EFI_PEI_STALL Stall;
+};
+
+extern EFI_GUID gEfiPeiStallPpiGuid;
+
+#endif
|