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1 | /** @file\r | |
2 | Set up ROM Table for PCI Bus module.\r | |
3 | \r | |
4 | Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>\r | |
5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
6 | \r | |
7 | **/\r | |
8 | \r | |
9 | #include "PciBus.h"\r | |
10 | \r | |
11 | //\r | |
12 | // PCI ROM image information\r | |
13 | //\r | |
14 | typedef struct {\r | |
15 | EFI_HANDLE ImageHandle;\r | |
16 | UINTN Seg;\r | |
17 | UINT8 Bus;\r | |
18 | UINT8 Dev;\r | |
19 | UINT8 Func;\r | |
20 | VOID *RomImage;\r | |
21 | UINT64 RomSize;\r | |
22 | } PCI_ROM_IMAGE;\r | |
23 | \r | |
24 | UINTN mNumberOfPciRomImages = 0;\r | |
25 | UINTN mMaxNumberOfPciRomImages = 0;\r | |
26 | PCI_ROM_IMAGE *mRomImageTable = NULL;\r | |
27 | \r | |
28 | /**\r | |
29 | Add the Rom Image to internal database for later PCI light enumeration.\r | |
30 | \r | |
31 | @param ImageHandle Option Rom image handle.\r | |
32 | @param Seg Segment of PCI space.\r | |
33 | @param Bus Bus NO of PCI space.\r | |
34 | @param Dev Dev NO of PCI space.\r | |
35 | @param Func Func NO of PCI space.\r | |
36 | @param RomImage Option Rom buffer.\r | |
37 | @param RomSize Size of Option Rom buffer.\r | |
38 | **/\r | |
39 | VOID\r | |
40 | PciRomAddImageMapping (\r | |
41 | IN EFI_HANDLE ImageHandle,\r | |
42 | IN UINTN Seg,\r | |
43 | IN UINT8 Bus,\r | |
44 | IN UINT8 Dev,\r | |
45 | IN UINT8 Func,\r | |
46 | IN VOID *RomImage,\r | |
47 | IN UINT64 RomSize\r | |
48 | )\r | |
49 | {\r | |
50 | UINTN Index;\r | |
51 | PCI_ROM_IMAGE *NewTable;\r | |
52 | \r | |
53 | for (Index = 0; Index < mNumberOfPciRomImages; Index++) {\r | |
54 | if ((mRomImageTable[Index].Seg == Seg) &&\r | |
55 | (mRomImageTable[Index].Bus == Bus) &&\r | |
56 | (mRomImageTable[Index].Dev == Dev) &&\r | |
57 | (mRomImageTable[Index].Func == Func))\r | |
58 | {\r | |
59 | //\r | |
60 | // Expect once RomImage and RomSize are recorded, they will be passed in\r | |
61 | // later when updating ImageHandle. They may also be updated with new\r | |
62 | // values if the platform provides an override of RomImage and RomSize.\r | |
63 | //\r | |
64 | break;\r | |
65 | }\r | |
66 | }\r | |
67 | \r | |
68 | if (Index == mNumberOfPciRomImages) {\r | |
69 | //\r | |
70 | // Rom Image Table buffer needs to grow.\r | |
71 | //\r | |
72 | if (mNumberOfPciRomImages == mMaxNumberOfPciRomImages) {\r | |
73 | NewTable = ReallocatePool (\r | |
74 | mMaxNumberOfPciRomImages * sizeof (PCI_ROM_IMAGE),\r | |
75 | (mMaxNumberOfPciRomImages + 0x20) * sizeof (PCI_ROM_IMAGE),\r | |
76 | mRomImageTable\r | |
77 | );\r | |
78 | if (NewTable == NULL) {\r | |
79 | return;\r | |
80 | }\r | |
81 | \r | |
82 | mRomImageTable = NewTable;\r | |
83 | mMaxNumberOfPciRomImages += 0x20;\r | |
84 | }\r | |
85 | \r | |
86 | //\r | |
87 | // Record the new PCI device\r | |
88 | //\r | |
89 | mRomImageTable[Index].Seg = Seg;\r | |
90 | mRomImageTable[Index].Bus = Bus;\r | |
91 | mRomImageTable[Index].Dev = Dev;\r | |
92 | mRomImageTable[Index].Func = Func;\r | |
93 | mNumberOfPciRomImages++;\r | |
94 | }\r | |
95 | \r | |
96 | mRomImageTable[Index].ImageHandle = ImageHandle;\r | |
97 | mRomImageTable[Index].RomImage = RomImage;\r | |
98 | mRomImageTable[Index].RomSize = RomSize;\r | |
99 | }\r | |
100 | \r | |
101 | /**\r | |
102 | Get Option rom driver's mapping for PCI device.\r | |
103 | \r | |
104 | @param PciIoDevice Device instance.\r | |
105 | \r | |
106 | @retval TRUE Found Image mapping.\r | |
107 | @retval FALSE Cannot found image mapping.\r | |
108 | \r | |
109 | **/\r | |
110 | BOOLEAN\r | |
111 | PciRomGetImageMapping (\r | |
112 | IN PCI_IO_DEVICE *PciIoDevice\r | |
113 | )\r | |
114 | {\r | |
115 | EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;\r | |
116 | UINTN Index;\r | |
117 | \r | |
118 | PciRootBridgeIo = PciIoDevice->PciRootBridgeIo;\r | |
119 | \r | |
120 | for (Index = 0; Index < mNumberOfPciRomImages; Index++) {\r | |
121 | if ((mRomImageTable[Index].Seg == PciRootBridgeIo->SegmentNumber) &&\r | |
122 | (mRomImageTable[Index].Bus == PciIoDevice->BusNumber) &&\r | |
123 | (mRomImageTable[Index].Dev == PciIoDevice->DeviceNumber) &&\r | |
124 | (mRomImageTable[Index].Func == PciIoDevice->FunctionNumber))\r | |
125 | {\r | |
126 | if (mRomImageTable[Index].ImageHandle != NULL) {\r | |
127 | AddDriver (PciIoDevice, mRomImageTable[Index].ImageHandle, NULL);\r | |
128 | }\r | |
129 | \r | |
130 | PciIoDevice->PciIo.RomImage = mRomImageTable[Index].RomImage;\r | |
131 | PciIoDevice->PciIo.RomSize = mRomImageTable[Index].RomSize;\r | |
132 | return TRUE;\r | |
133 | }\r | |
134 | }\r | |
135 | \r | |
136 | return FALSE;\r | |
137 | }\r |