2 This is an implementation of the AcpiVariable platform field for ECP platform.
4 Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
6 This program and the accompanying materials
7 are licensed and made available under the terms and conditions
8 of the BSD License which accompanies this distribution. The
9 full text of the license may be found at
10 http://opensource.org/licenses/bsd-license.php
12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
18 EFI_PHYSICAL_ADDRESS AcpiReservedMemoryBase; <<===
19 UINT32 AcpiReservedMemorySize; <<===
20 EFI_PHYSICAL_ADDRESS S3ReservedLowMemoryBase;
21 EFI_PHYSICAL_ADDRESS AcpiBootScriptTable;
22 EFI_PHYSICAL_ADDRESS RuntimeScriptTableBase;
23 EFI_PHYSICAL_ADDRESS AcpiFacsTable;
24 UINT64 SystemMemoryLength; <<===
25 ACPI_CPU_DATA_COMPATIBILITY AcpiCpuData;
26 EFI_PHYSICAL_ADDRESS VideoOpromAddress;
27 UINT32 VideoOpromSize;
28 EFI_PHYSICAL_ADDRESS S3DebugBufferAddress;
29 EFI_PHYSICAL_ADDRESS S3ResumeNvsEntryPoint;
30 } ACPI_VARIABLE_SET_COMPATIBILITY;
34 #include <FrameworkDxe.h>
35 #include <Library/BaseLib.h>
36 #include <Library/BaseMemoryLib.h>
37 #include <Library/UefiBootServicesTableLib.h>
38 #include <Library/UefiRuntimeServicesTableLib.h>
39 #include <Library/HobLib.h>
40 #include <Library/PcdLib.h>
41 #include <Library/DebugLib.h>
42 #include <Protocol/FrameworkMpService.h>
43 #include <Guid/AcpiVariableCompatibility.h>
44 #include <Guid/AcpiS3Context.h>
46 GLOBAL_REMOVE_IF_UNREFERENCED
47 ACPI_VARIABLE_SET_COMPATIBILITY
*mAcpiVariableSetCompatibility
= NULL
;
50 Allocate memory below 4G memory address.
52 This function allocates memory below 4G memory address.
54 @param MemoryType Memory type of memory to allocate.
55 @param Size Size of memory to allocate.
57 @return Allocated address for output.
61 AllocateMemoryBelow4G (
62 IN EFI_MEMORY_TYPE MemoryType
,
67 Hook point for AcpiVariableThunkPlatform for S3Ready.
69 @param AcpiS3Context ACPI s3 context
72 S3ReadyThunkPlatform (
73 IN ACPI_S3_CONTEXT
*AcpiS3Context
76 EFI_PHYSICAL_ADDRESS AcpiMemoryBase
;
77 UINT32 AcpiMemorySize
;
78 EFI_PEI_HOB_POINTERS Hob
;
81 DEBUG ((EFI_D_INFO
, "S3ReadyThunkPlatform\n"));
84 // Allocate ACPI reserved memory under 4G
86 AcpiMemoryBase
= (EFI_PHYSICAL_ADDRESS
)(UINTN
)AllocateMemoryBelow4G (EfiReservedMemoryType
, PcdGet32 (PcdS3AcpiReservedMemorySize
));
87 ASSERT (AcpiMemoryBase
!= 0);
88 AcpiMemorySize
= PcdGet32 (PcdS3AcpiReservedMemorySize
);
91 // Calculate the system memory length by memory hobs
93 MemoryLength
= 0x100000;
94 Hob
.Raw
= GetFirstHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR
);
95 ASSERT (Hob
.Raw
!= NULL
);
96 while ((Hob
.Raw
!= NULL
) && (!END_OF_HOB_LIST (Hob
))) {
97 if (Hob
.ResourceDescriptor
->ResourceType
== EFI_RESOURCE_SYSTEM_MEMORY
) {
99 // Skip the memory region below 1MB
101 if (Hob
.ResourceDescriptor
->PhysicalStart
>= 0x100000) {
102 MemoryLength
+= Hob
.ResourceDescriptor
->ResourceLength
;
105 Hob
.Raw
= GET_NEXT_HOB (Hob
);
106 Hob
.Raw
= GetNextHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR
, Hob
.Raw
);
109 mAcpiVariableSetCompatibility
->AcpiReservedMemoryBase
= AcpiMemoryBase
;
110 mAcpiVariableSetCompatibility
->AcpiReservedMemorySize
= AcpiMemorySize
;
111 mAcpiVariableSetCompatibility
->SystemMemoryLength
= MemoryLength
;
113 DEBUG((EFI_D_INFO
, "AcpiVariableThunkPlatform: AcpiMemoryBase is 0x%8x\n", mAcpiVariableSetCompatibility
->AcpiReservedMemoryBase
));
114 DEBUG((EFI_D_INFO
, "AcpiVariableThunkPlatform: AcpiMemorySize is 0x%8x\n", mAcpiVariableSetCompatibility
->AcpiReservedMemorySize
));
115 DEBUG((EFI_D_INFO
, "AcpiVariableThunkPlatform: SystemMemoryLength is 0x%8x\n", mAcpiVariableSetCompatibility
->SystemMemoryLength
));
121 Hook point for AcpiVariableThunkPlatform for InstallAcpiS3Save.
124 InstallAcpiS3SaveThunk (
129 FRAMEWORK_EFI_MP_SERVICES_PROTOCOL
*FrameworkMpService
;
132 Status
= gBS
->LocateProtocol (
133 &gFrameworkEfiMpServiceProtocolGuid
,
135 (VOID
**) &FrameworkMpService
137 if (!EFI_ERROR (Status
)) {
139 // On ECP platform, if framework CPU drivers are in use, The compatible version of ACPI variable set
140 // should be produced by CPU driver.
142 VarSize
= sizeof (mAcpiVariableSetCompatibility
);
143 Status
= gRT
->GetVariable (
144 ACPI_GLOBAL_VARIABLE
,
145 &gEfiAcpiVariableCompatiblityGuid
,
148 &mAcpiVariableSetCompatibility
150 ASSERT_EFI_ERROR (Status
);
153 // Allocate/initialize the compatible version of Acpi Variable Set since Framework chipset/platform
154 // driver need this variable
156 mAcpiVariableSetCompatibility
= AllocateMemoryBelow4G (EfiACPIMemoryNVS
, sizeof(ACPI_VARIABLE_SET_COMPATIBILITY
));
157 Status
= gRT
->SetVariable (
158 ACPI_GLOBAL_VARIABLE
,
159 &gEfiAcpiVariableCompatiblityGuid
,
160 EFI_VARIABLE_BOOTSERVICE_ACCESS
| EFI_VARIABLE_RUNTIME_ACCESS
| EFI_VARIABLE_NON_VOLATILE
,
161 sizeof(mAcpiVariableSetCompatibility
),
162 &mAcpiVariableSetCompatibility
164 ASSERT_EFI_ERROR (Status
);
167 DEBUG((EFI_D_INFO
, "AcpiVariableSetCompatibility is 0x%8x\n", mAcpiVariableSetCompatibility
));