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 SPDX-License-Identifier: BSD-2-Clause-Patent
7
8 **/
9
10 #include <PiSmm.h>
11 #include <Library/SmmCpuFeaturesLib.h>
12
13 /**
14 Internal worker function that is called to complete CPU initialization at the
15 end of SmmCpuFeaturesInitializeProcessor().
16
17 **/
18 VOID
FinishSmmCpuFeaturesInitializeProcessor(VOID)19 FinishSmmCpuFeaturesInitializeProcessor (
20 VOID
21 )
22 {
23 }
24
25 /**
26 Return the size, in bytes, of a custom SMI Handler in bytes. If 0 is
27 returned, then a custom SMI handler is not provided by this library,
28 and the default SMI handler must be used.
29
30 @retval 0 Use the default SMI handler.
31 @retval > 0 Use the SMI handler installed by SmmCpuFeaturesInstallSmiHandler()
32 The caller is required to allocate enough SMRAM for each CPU to
33 support the size of the custom SMI handler.
34 **/
35 UINTN
36 EFIAPI
SmmCpuFeaturesGetSmiHandlerSize(VOID)37 SmmCpuFeaturesGetSmiHandlerSize (
38 VOID
39 )
40 {
41 return 0;
42 }
43
44 /**
45 Install a custom SMI handler for the CPU specified by CpuIndex. This function
46 is only called if SmmCpuFeaturesGetSmiHandlerSize() returns a size is greater
47 than zero and is called by the CPU that was elected as monarch during System
48 Management Mode initialization.
49
50 @param[in] CpuIndex The index of the CPU to install the custom SMI handler.
51 The value must be between 0 and the NumberOfCpus field
52 in the System Management System Table (SMST).
53 @param[in] SmBase The SMBASE address for the CPU specified by CpuIndex.
54 @param[in] SmiStack The stack to use when an SMI is processed by the
55 the CPU specified by CpuIndex.
56 @param[in] StackSize The size, in bytes, if the stack used when an SMI is
57 processed by the CPU specified by CpuIndex.
58 @param[in] GdtBase The base address of the GDT to use when an SMI is
59 processed by the CPU specified by CpuIndex.
60 @param[in] GdtSize The size, in bytes, of the GDT used when an SMI is
61 processed by the CPU specified by CpuIndex.
62 @param[in] IdtBase The base address of the IDT to use when an SMI is
63 processed by the CPU specified by CpuIndex.
64 @param[in] IdtSize The size, in bytes, of the IDT used when an SMI is
65 processed by the CPU specified by CpuIndex.
66 @param[in] Cr3 The base address of the page tables to use when an SMI
67 is processed by the CPU specified by CpuIndex.
68 **/
69 VOID
70 EFIAPI
SmmCpuFeaturesInstallSmiHandler(IN UINTN CpuIndex,IN UINT32 SmBase,IN VOID * SmiStack,IN UINTN StackSize,IN UINTN GdtBase,IN UINTN GdtSize,IN UINTN IdtBase,IN UINTN IdtSize,IN UINT32 Cr3)71 SmmCpuFeaturesInstallSmiHandler (
72 IN UINTN CpuIndex,
73 IN UINT32 SmBase,
74 IN VOID *SmiStack,
75 IN UINTN StackSize,
76 IN UINTN GdtBase,
77 IN UINTN GdtSize,
78 IN UINTN IdtBase,
79 IN UINTN IdtSize,
80 IN UINT32 Cr3
81 )
82 {
83 }
84