MdeModulePkg/DxeCapsuleLibFmp: Add DxeCapsuleLibFmp instance.
[mirror_edk2.git] / MdeModulePkg / Library / DxeCapsuleLibFmp / DxeCapsuleRuntime.c
1 /** @file
2 Capsule library runtime support.
3
4 Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
5 This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
9
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
12
13 **/
14
15 #include <PiDxe.h>
16
17 #include <Guid/FmpCapsule.h>
18 #include <Guid/SystemResourceTable.h>
19 #include <Guid/EventGroup.h>
20
21 #include <Library/BaseLib.h>
22 #include <Library/DebugLib.h>
23 #include <Library/BaseMemoryLib.h>
24 #include <Library/DxeServicesTableLib.h>
25 #include <Library/UefiBootServicesTableLib.h>
26 #include <Library/UefiRuntimeServicesTableLib.h>
27 #include <Library/MemoryAllocationLib.h>
28
29 extern EFI_SYSTEM_RESOURCE_TABLE *mEsrtTable;
30 extern BOOLEAN mIsVirtualAddrConverted;
31
32 /**
33 Convert EsrtTable physical address to virtual address.
34
35 @param[in] Event Event whose notification function is being invoked.
36 @param[in] Context The pointer to the notification function's context, which
37 is implementation-dependent.
38 **/
39 VOID
40 EFIAPI
41 DxeCapsuleLibVirtualAddressChangeEvent (
42 IN EFI_EVENT Event,
43 IN VOID *Context
44 )
45 {
46 UINTN Index;
47 EFI_CONFIGURATION_TABLE *ConfigEntry;
48
49 //
50 // Get Esrt table first
51 //
52 ConfigEntry = gST->ConfigurationTable;
53 for (Index = 0; Index < gST->NumberOfTableEntries; Index++) {
54 if (CompareGuid(&gEfiSystemResourceTableGuid, &ConfigEntry->VendorGuid)) {
55 break;
56 }
57 ConfigEntry++;
58 }
59
60 //
61 // If no Esrt table installed in Configure Table
62 //
63 if (Index < gST->NumberOfTableEntries) {
64 //
65 // Search Esrt to check given capsule is qualified
66 //
67 mEsrtTable = (EFI_SYSTEM_RESOURCE_TABLE *) ConfigEntry->VendorTable;
68
69 //
70 // Update protocol pointer to Esrt Table.
71 //
72 gRT->ConvertPointer (0x00, (VOID**) &(mEsrtTable));
73 }
74
75 mIsVirtualAddrConverted = TRUE;
76
77 }
78
79 /**
80 The constructor function hook VirtualAddressChange event to use ESRT table as capsule routing table.
81
82 @param ImageHandle The firmware allocated handle for the EFI image.
83 @param SystemTable A pointer to the EFI System Table.
84
85 @retval EFI_SUCCESS The constructor successfully .
86 **/
87 EFI_STATUS
88 EFIAPI
89 DxeRuntimeCapsuleLibConstructor (
90 IN EFI_HANDLE ImageHandle,
91 IN EFI_SYSTEM_TABLE *SystemTable
92 )
93 {
94 EFI_STATUS Status;
95 EFI_EVENT Event;
96
97 //
98 // Make sure we can handle virtual address changes.
99 //
100 Event = NULL;
101 Status = gBS->CreateEventEx (
102 EVT_NOTIFY_SIGNAL,
103 TPL_NOTIFY,
104 DxeCapsuleLibVirtualAddressChangeEvent,
105 NULL,
106 &gEfiEventVirtualAddressChangeGuid,
107 &Event
108 );
109 ASSERT_EFI_ERROR (Status);
110
111 return EFI_SUCCESS;
112 }