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3db51098 | 1 | /**@file\r |
ead42efc | 2 | \r |
3db51098 | 3 | Copyright (c) 2006, Intel Corporation \r |
4 | All rights reserved. This program and the accompanying materials \r | |
5 | are licensed and made available under the terms and conditions of the BSD License \r | |
6 | which accompanies this distribution. The full text of the license may be found at \r | |
7 | http://opensource.org/licenses/bsd-license.php \r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
ead42efc | 11 | \r |
3db51098 | 12 | **/\r |
ead42efc | 13 | \r |
ead42efc | 14 | \r |
03417d8d | 15 | #include "PciBus.h"\r |
ead42efc | 16 | \r |
bcd70414 | 17 | /**\r |
ead42efc | 18 | Initializes a PCI Driver Override Instance\r |
19 | \r | |
a3b8e257 | 20 | @param PciIoDevice Device instance\r |
ead42efc | 21 | \r |
a3b8e257 | 22 | @retval EFI_SUCCESS Operation success\r |
bcd70414 | 23 | **/\r |
a3b8e257 | 24 | EFI_STATUS\r |
25 | InitializePciDriverOverrideInstance (\r | |
26 | PCI_IO_DEVICE *PciIoDevice\r | |
27 | )\r | |
ead42efc | 28 | {\r |
29 | PciIoDevice->PciDriverOverride.GetDriver = GetDriver;\r | |
30 | return EFI_SUCCESS;\r | |
31 | }\r | |
32 | \r | |
a3b8e257 | 33 | /**\r |
34 | Get a overriding driver image\r | |
35 | @param This Pointer to instance of EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL\r | |
36 | @param DriverImageHandle Override driver image,\r | |
37 | \r | |
38 | @retval EFI_SUCCESS Success to get driver image handle\r | |
39 | @retval EFI_NOT_FOUND can not find override driver image\r | |
40 | @retval EFI_INVALID_PARAMETER Invalid parameter\r | |
41 | **/\r | |
ead42efc | 42 | EFI_STATUS\r |
43 | EFIAPI\r | |
44 | GetDriver (\r | |
45 | IN EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL *This,\r | |
46 | IN OUT EFI_HANDLE *DriverImageHandle\r | |
47 | )\r | |
ead42efc | 48 | {\r |
49 | PCI_IO_DEVICE *PciIoDevice;\r | |
50 | LIST_ENTRY *CurrentLink;\r | |
51 | PCI_DRIVER_OVERRIDE_LIST *Node;\r | |
52 | \r | |
53 | PciIoDevice = PCI_IO_DEVICE_FROM_PCI_DRIVER_OVERRIDE_THIS (This);\r | |
54 | \r | |
55 | CurrentLink = PciIoDevice->OptionRomDriverList.ForwardLink;\r | |
56 | \r | |
57 | while (CurrentLink && CurrentLink != &PciIoDevice->OptionRomDriverList) {\r | |
58 | \r | |
59 | Node = DRIVER_OVERRIDE_FROM_LINK (CurrentLink);\r | |
60 | \r | |
61 | if (*DriverImageHandle == NULL) {\r | |
62 | \r | |
63 | *DriverImageHandle = Node->DriverImageHandle;\r | |
64 | return EFI_SUCCESS;\r | |
65 | }\r | |
66 | \r | |
67 | if (*DriverImageHandle == Node->DriverImageHandle) {\r | |
68 | \r | |
69 | if (CurrentLink->ForwardLink == &PciIoDevice->OptionRomDriverList ||\r | |
70 | CurrentLink->ForwardLink == NULL) {\r | |
71 | return EFI_NOT_FOUND;\r | |
72 | }\r | |
73 | \r | |
74 | //\r | |
75 | // Get next node\r | |
76 | //\r | |
77 | Node = DRIVER_OVERRIDE_FROM_LINK (CurrentLink->ForwardLink);\r | |
78 | *DriverImageHandle = Node->DriverImageHandle;\r | |
79 | return EFI_SUCCESS;\r | |
80 | }\r | |
81 | \r | |
82 | CurrentLink = CurrentLink->ForwardLink;\r | |
83 | }\r | |
84 | \r | |
85 | return EFI_INVALID_PARAMETER;\r | |
86 | }\r | |
87 | \r | |
a3b8e257 | 88 | /**\r |
89 | Add an overriding driver image\r | |
90 | \r | |
91 | @param PciIoDevice Instance of PciIo device\r | |
92 | @param DriverImageHandle new added driver image\r | |
93 | \r | |
94 | @retval EFI_OUT_OF_RESOURCES no memory resource for new driver instance\r | |
95 | @retval EFI_SUCCESS Success add driver\r | |
96 | **/\r | |
ead42efc | 97 | EFI_STATUS\r |
98 | AddDriver (\r | |
99 | IN PCI_IO_DEVICE *PciIoDevice,\r | |
100 | IN EFI_HANDLE DriverImageHandle\r | |
101 | )\r | |
ead42efc | 102 | {\r |
103 | EFI_STATUS Status;\r | |
104 | EFI_IMAGE_DOS_HEADER *DosHdr;\r | |
105 | EFI_IMAGE_NT_HEADERS *PeHdr;\r | |
106 | EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;\r | |
107 | PCI_DRIVER_OVERRIDE_LIST *Node;\r | |
108 | \r | |
109 | Status = gBS->HandleProtocol (DriverImageHandle, &gEfiLoadedImageProtocolGuid, (VOID **) &LoadedImage);\r | |
110 | if (EFI_ERROR (Status)) {\r | |
111 | return Status;\r | |
112 | }\r | |
113 | \r | |
114 | Node = AllocatePool (sizeof (PCI_DRIVER_OVERRIDE_LIST));\r | |
115 | if (Node == NULL) {\r | |
116 | return EFI_OUT_OF_RESOURCES;\r | |
117 | }\r | |
118 | \r | |
119 | Node->Signature = DRIVER_OVERRIDE_SIGNATURE;\r | |
120 | Node->DriverImageHandle = DriverImageHandle;\r | |
121 | \r | |
122 | InsertTailList (&PciIoDevice->OptionRomDriverList, &(Node->Link));\r | |
123 | \r | |
124 | PciIoDevice->BusOverride = TRUE;\r | |
125 | \r | |
126 | DosHdr = (EFI_IMAGE_DOS_HEADER *) LoadedImage->ImageBase;\r | |
127 | if (DosHdr->e_magic != EFI_IMAGE_DOS_SIGNATURE) {\r | |
128 | return EFI_SUCCESS;\r | |
129 | }\r | |
130 | \r | |
131 | PeHdr = (EFI_IMAGE_NT_HEADERS *) ((UINTN) LoadedImage->ImageBase + DosHdr->e_lfanew);\r | |
132 | \r | |
133 | if (PeHdr->FileHeader.Machine != EFI_IMAGE_MACHINE_EBC) {\r | |
134 | return EFI_SUCCESS;\r | |
135 | }\r | |
136 | return EFI_SUCCESS;\r | |
137 | }\r | |
a3b8e257 | 138 | \r |