1 /** @file 2 The CPU specific programming for PiSmmCpuDxeSmm module when STM support 3 is not included. 4 5 Copyright (c) 2010 - 2016, Intel Corporation. All rights reserved.<BR> 6 This program and the accompanying materials 7 are licensed and made available under the terms and conditions of the BSD License 8 which accompanies this distribution. The full text of the license may be found at 9 http://opensource.org/licenses/bsd-license.php 10 11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 13 14 **/ 15 16 #include <PiSmm.h> 17 #include <Library/SmmCpuFeaturesLib.h> 18 19 /** 20 Internal worker function that is called to complete CPU initialization at the 21 end of SmmCpuFeaturesInitializeProcessor(). 22 23 **/ 24 VOID 25 FinishSmmCpuFeaturesInitializeProcessor ( 26 VOID 27 ) 28 { 29 } 30 31 /** 32 Return the size, in bytes, of a custom SMI Handler in bytes. If 0 is 33 returned, then a custom SMI handler is not provided by this library, 34 and the default SMI handler must be used. 35 36 @retval 0 Use the default SMI handler. 37 @retval > 0 Use the SMI handler installed by SmmCpuFeaturesInstallSmiHandler() 38 The caller is required to allocate enough SMRAM for each CPU to 39 support the size of the custom SMI handler. 40 **/ 41 UINTN 42 EFIAPI 43 SmmCpuFeaturesGetSmiHandlerSize ( 44 VOID 45 ) 46 { 47 return 0; 48 } 49 50 /** 51 Install a custom SMI handler for the CPU specified by CpuIndex. This function 52 is only called if SmmCpuFeaturesGetSmiHandlerSize() returns a size is greater 53 than zero and is called by the CPU that was elected as monarch during System 54 Management Mode initialization. 55 56 @param[in] CpuIndex The index of the CPU to install the custom SMI handler. 57 The value must be between 0 and the NumberOfCpus field 58 in the System Management System Table (SMST). 59 @param[in] SmBase The SMBASE address for the CPU specified by CpuIndex. 60 @param[in] SmiStack The stack to use when an SMI is processed by the 61 the CPU specified by CpuIndex. 62 @param[in] StackSize The size, in bytes, if the stack used when an SMI is 63 processed by the CPU specified by CpuIndex. 64 @param[in] GdtBase The base address of the GDT to use when an SMI is 65 processed by the CPU specified by CpuIndex. 66 @param[in] GdtSize The size, in bytes, of the GDT used when an SMI is 67 processed by the CPU specified by CpuIndex. 68 @param[in] IdtBase The base address of the IDT to use when an SMI is 69 processed by the CPU specified by CpuIndex. 70 @param[in] IdtSize The size, in bytes, of the IDT used when an SMI is 71 processed by the CPU specified by CpuIndex. 72 @param[in] Cr3 The base address of the page tables to use when an SMI 73 is processed by the CPU specified by CpuIndex. 74 **/ 75 VOID 76 EFIAPI 77 SmmCpuFeaturesInstallSmiHandler ( 78 IN UINTN CpuIndex, 79 IN UINT32 SmBase, 80 IN VOID *SmiStack, 81 IN UINTN StackSize, 82 IN UINTN GdtBase, 83 IN UINTN GdtSize, 84 IN UINTN IdtBase, 85 IN UINTN IdtSize, 86 IN UINT32 Cr3 87 ) 88 { 89 } 90
