From d1fc3d7ef3cb77c63409f5ad873eb37302fa3481 Mon Sep 17 00:00:00 2001 From: Kun Qin Date: Thu, 24 Jun 2021 11:33:08 +0800 Subject: MdePkg: MmConfiguration: Added definition of MM Configuration PPI REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3440 MM Configuration PPI was defined in PI Specification since v1.5. This change added definition of such PPI and related GUIDs into MdePkg. Cc: Michael D Kinney Cc: Liming Gao Cc: Zhiguang Liu Cc: Michael Kubacki Signed-off-by: Kun Qin Reviewed-by: Liming Gao --- MdePkg/Include/Ppi/MmConfiguration.h | 62 ++++++++++++++++++++++++++++++++++++ MdePkg/MdePkg.dec | 3 ++ 2 files changed, 65 insertions(+) create mode 100644 MdePkg/Include/Ppi/MmConfiguration.h diff --git a/MdePkg/Include/Ppi/MmConfiguration.h b/MdePkg/Include/Ppi/MmConfiguration.h new file mode 100644 index 0000000..862a80e --- /dev/null +++ b/MdePkg/Include/Ppi/MmConfiguration.h @@ -0,0 +1,62 @@ +/** @file + EFI MM Configuration PPI as defined in PI 1.5 specification. + + This PPI is used to: + 1) report the portions of MMRAM regions which cannot be used for the MMRAM heap. + 2) register the MM Foundation entry point with the processor code. The entry + point will be invoked by the MM processor entry code. + + Copyright (c) Microsoft Corporation. + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#ifndef MM_CONFIGURATION_PPI_H_ +#define MM_CONFIGURATION_PPI_H_ + +#include + +#define EFI_PEI_MM_CONFIGURATION_PPI_GUID \ + { \ + 0xc109319, 0xc149, 0x450e, { 0xa3, 0xe3, 0xb9, 0xba, 0xdd, 0x9d, 0xc3, 0xa4 } \ + } + +typedef struct _EFI_PEI_MM_CONFIGURATION_PPI EFI_PEI_MM_CONFIGURATION_PPI; + +/** + This function registers the MM Foundation entry point with the processor code. This entry point will be + invoked by the MM Processor entry code as defined in PI specification. + + @param[in] This The EFI_PEI_MM_CONFIGURATION_PPI instance. + @param[in] MmEntryPoint MM Foundation entry point. + + @retval EFI_SUCCESS The entry-point was successfully registered. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_PEI_MM_REGISTER_MM_ENTRY) ( + IN CONST EFI_PEI_MM_CONFIGURATION_PPI *This, + IN EFI_MM_ENTRY_POINT MmEntryPoint + ); + +/// +/// This PPI is a PPI published by a CPU PEIM to indicate which areas within MMRAM are reserved for use by +/// the CPU for any purpose, such as stack, save state or MM entry point. If a platform chooses to let a CPU +/// PEIM do MMRAM relocation, this PPI must be produced by this CPU PEIM. +/// +/// The MmramReservedRegions points to an array of one or more EFI_MM_RESERVED_MMRAM_REGION structures, with +/// the last structure having the MmramReservedSize set to 0. An empty array would contain only the last +/// structure. +/// +/// The RegisterMmEntry() function allows the MM IPL PEIM to register the MM Foundation entry point with the +/// MM entry vector code. +/// +struct _EFI_PEI_MM_CONFIGURATION_PPI { + EFI_MM_RESERVED_MMRAM_REGION *MmramReservedRegions; + EFI_PEI_MM_REGISTER_MM_ENTRY RegisterMmEntry; +}; + +extern EFI_GUID gEfiPeiMmConfigurationPpi; + +#endif diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec index b49f88d..c5319fd 100644 --- a/MdePkg/MdePkg.dec +++ b/MdePkg/MdePkg.dec @@ -983,6 +983,9 @@ ## Include/Ppi/MmControl.h gEfiPeiMmControlPpiGuid = { 0x61c68702, 0x4d7e, 0x4f43, { 0x8d, 0xef, 0xa7, 0x43, 0x5, 0xce, 0x74, 0xc5 }} + ## Include/Ppi/MmConfiguration.h + gEfiPeiMmConfigurationPpi = { 0xc109319, 0xc149, 0x450e, { 0xa3, 0xe3, 0xb9, 0xba, 0xdd, 0x9d, 0xc3, 0xa4 } } + # # PPIs defined in PI 1.7. # -- cgit v1.1