1 /** @file 2 This file declares Temporary RAM Done PPI. 3 The PPI that provides a service to disable the use of Temporary RAM. 4 5 Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved.<BR> 6 SPDX-License-Identifier: BSD-2-Clause-Patent 7 8 @par Revision Reference: 9 This PPI is introduced in PI Version 1.2.1. 10 11 **/ 12 13 #ifndef __TEMPORARY_RAM_DONE_H__ 14 #define __TEMPORARY_RAM_DONE_H__ 15 16 #define EFI_PEI_TEMPORARY_RAM_DONE_PPI_GUID \ 17 { 0xceab683c, 0xec56, 0x4a2d, { 0xa9, 0x6, 0x40, 0x53, 0xfa, 0x4e, 0x9c, 0x16 } } 18 19 /** 20 TemporaryRamDone() disables the use of Temporary RAM. If present, this service is invoked 21 by the PEI Foundation after the EFI_PEI_PERMANANT_MEMORY_INSTALLED_PPI is installed. 22 23 @retval EFI_SUCCESS Use of Temporary RAM was disabled. 24 @retval EFI_INVALID_PARAMETER Temporary RAM could not be disabled. 25 26 **/ 27 typedef 28 EFI_STATUS 29 (EFIAPI * EFI_PEI_TEMPORARY_RAM_DONE) ( 30 VOID 31 ); 32 33 /// 34 /// This is an optional PPI that may be produced by SEC or a PEIM. If present, it provide a service to 35 /// disable the use of Temporary RAM. This service may only be called by the PEI Foundation after the 36 /// transition from Temporary RAM to Permanent RAM is complete. This PPI provides an alternative 37 /// to the Temporary RAM Migration PPI for system architectures that allow Temporary RAM and 38 /// Permanent RAM to be enabled and accessed at the same time with no side effects. 39 /// 40 typedef struct _EFI_PEI_TEMPORARY_RAM_DONE_PPI { 41 EFI_PEI_TEMPORARY_RAM_DONE TemporaryRamDone; 42 } EFI_PEI_TEMPORARY_RAM_DONE_PPI; 43 44 extern EFI_GUID gEfiTemporaryRamDonePpiGuid; 45 46 #endif 47