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1767877a LE |
1 | /**@file\r |
2 | Functions related to the Firmware Volume Block service whose\r | |
3 | implementation is specific to the runtime DXE driver build.\r | |
4 | \r | |
5 | Copyright (C) 2015, Red Hat, Inc.\r | |
6 | Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>\r | |
7 | \r | |
8 | This program and the accompanying materials are licensed and made available\r | |
9 | under the terms and conditions of the BSD License which accompanies this\r | |
10 | distribution. The full text of the license may be found at\r | |
11 | http://opensource.org/licenses/bsd-license.php\r | |
12 | \r | |
13 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
14 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
15 | **/\r | |
16 | \r | |
17 | #include <Guid/EventGroup.h>\r | |
18 | #include <Library/DebugLib.h>\r | |
19 | #include <Library/DevicePathLib.h>\r | |
b963ec49 | 20 | #include <Library/PcdLib.h>\r |
1767877a LE |
21 | #include <Library/UefiBootServicesTableLib.h>\r |
22 | #include <Library/UefiRuntimeLib.h>\r | |
23 | #include <Protocol/DevicePath.h>\r | |
24 | #include <Protocol/FirmwareVolumeBlock.h>\r | |
25 | \r | |
26 | #include "FwBlockService.h"\r | |
27 | #include "QemuFlash.h"\r | |
28 | \r | |
29 | VOID\r | |
30 | InstallProtocolInterfaces (\r | |
31 | IN EFI_FW_VOL_BLOCK_DEVICE *FvbDevice\r | |
32 | )\r | |
33 | {\r | |
34 | EFI_STATUS Status;\r | |
35 | EFI_HANDLE FwbHandle;\r | |
36 | EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *OldFwbInterface;\r | |
37 | \r | |
b963ec49 LE |
38 | ASSERT (!FeaturePcdGet (PcdSmmSmramRequire));\r |
39 | \r | |
1767877a LE |
40 | //\r |
41 | // Find a handle with a matching device path that has supports FW Block\r | |
42 | // protocol\r | |
43 | //\r | |
44 | Status = gBS->LocateDevicePath (&gEfiFirmwareVolumeBlockProtocolGuid,\r | |
45 | &FvbDevice->DevicePath, &FwbHandle);\r | |
46 | if (EFI_ERROR (Status)) {\r | |
47 | //\r | |
48 | // LocateDevicePath fails so install a new interface and device path\r | |
49 | //\r | |
50 | FwbHandle = NULL;\r | |
51 | DEBUG ((EFI_D_INFO, "Installing QEMU flash FVB\n"));\r | |
52 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
53 | &FwbHandle,\r | |
54 | &gEfiFirmwareVolumeBlockProtocolGuid,\r | |
55 | &FvbDevice->FwVolBlockInstance,\r | |
56 | &gEfiDevicePathProtocolGuid,\r | |
57 | FvbDevice->DevicePath,\r | |
58 | NULL\r | |
59 | );\r | |
60 | ASSERT_EFI_ERROR (Status);\r | |
61 | } else if (IsDevicePathEnd (FvbDevice->DevicePath)) {\r | |
62 | //\r | |
63 | // Device already exists, so reinstall the FVB protocol\r | |
64 | //\r | |
65 | Status = gBS->HandleProtocol (\r | |
66 | FwbHandle,\r | |
67 | &gEfiFirmwareVolumeBlockProtocolGuid,\r | |
68 | (VOID**)&OldFwbInterface\r | |
69 | );\r | |
70 | ASSERT_EFI_ERROR (Status);\r | |
71 | \r | |
72 | DEBUG ((EFI_D_INFO, "Reinstalling FVB for QEMU flash region\n"));\r | |
73 | Status = gBS->ReinstallProtocolInterface (\r | |
74 | FwbHandle,\r | |
75 | &gEfiFirmwareVolumeBlockProtocolGuid,\r | |
76 | OldFwbInterface,\r | |
77 | &FvbDevice->FwVolBlockInstance\r | |
78 | );\r | |
79 | ASSERT_EFI_ERROR (Status);\r | |
80 | } else {\r | |
81 | //\r | |
82 | // There was a FVB protocol on an End Device Path node\r | |
83 | //\r | |
84 | ASSERT (FALSE);\r | |
85 | }\r | |
86 | }\r | |
87 | \r | |
88 | \r | |
89 | STATIC\r | |
90 | VOID\r | |
91 | EFIAPI\r | |
92 | FvbVirtualAddressChangeEvent (\r | |
93 | IN EFI_EVENT Event,\r | |
94 | IN VOID *Context\r | |
95 | )\r | |
96 | /*++\r | |
97 | \r | |
98 | Routine Description:\r | |
99 | \r | |
100 | Fixup internal data so that EFI and SAL can be call in virtual mode.\r | |
101 | Call the passed in Child Notify event and convert the mFvbModuleGlobal\r | |
102 | date items to there virtual address.\r | |
103 | \r | |
104 | Arguments:\r | |
105 | \r | |
106 | (Standard EFI notify event - EFI_EVENT_NOTIFY)\r | |
107 | \r | |
108 | Returns:\r | |
109 | \r | |
110 | None\r | |
111 | \r | |
112 | --*/\r | |
113 | {\r | |
114 | EFI_FW_VOL_INSTANCE *FwhInstance;\r | |
115 | UINTN Index;\r | |
116 | \r | |
117 | FwhInstance = mFvbModuleGlobal->FvInstance;\r | |
118 | EfiConvertPointer (0x0, (VOID **) &mFvbModuleGlobal->FvInstance);\r | |
119 | \r | |
120 | //\r | |
121 | // Convert the base address of all the instances\r | |
122 | //\r | |
123 | Index = 0;\r | |
124 | while (Index < mFvbModuleGlobal->NumFv) {\r | |
125 | EfiConvertPointer (0x0, (VOID **) &FwhInstance->FvBase);\r | |
126 | FwhInstance = (EFI_FW_VOL_INSTANCE *)\r | |
127 | (\r | |
128 | (UINTN) ((UINT8 *) FwhInstance) +\r | |
129 | FwhInstance->VolumeHeader.HeaderLength +\r | |
130 | (sizeof (EFI_FW_VOL_INSTANCE) - sizeof (EFI_FIRMWARE_VOLUME_HEADER))\r | |
131 | );\r | |
132 | Index++;\r | |
133 | }\r | |
134 | \r | |
135 | EfiConvertPointer (0x0, (VOID **) &mFvbModuleGlobal);\r | |
136 | QemuFlashConvertPointers ();\r | |
137 | }\r | |
138 | \r | |
139 | \r | |
140 | VOID\r | |
141 | InstallVirtualAddressChangeHandler (\r | |
142 | VOID\r | |
143 | )\r | |
144 | {\r | |
145 | EFI_STATUS Status;\r | |
146 | EFI_EVENT VirtualAddressChangeEvent;\r | |
147 | \r | |
148 | Status = gBS->CreateEventEx (\r | |
149 | EVT_NOTIFY_SIGNAL,\r | |
150 | TPL_NOTIFY,\r | |
151 | FvbVirtualAddressChangeEvent,\r | |
152 | NULL,\r | |
153 | &gEfiEventVirtualAddressChangeGuid,\r | |
154 | &VirtualAddressChangeEvent\r | |
155 | );\r | |
156 | ASSERT_EFI_ERROR (Status);\r | |
157 | }\r |