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1 | /** @file\r | |
2 | VGA Mini Port Protocol that is used to set the text display mode of a VGA controller.\r | |
3 | \r | |
4 | Copyright (c) 2006 - 2009, Intel Corporation\r | |
5 | All rights reserved. This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #ifndef __VGA_MINI_PORT_H_\r | |
16 | #define __VGA_MINI_PORT_H_\r | |
17 | \r | |
18 | ///\r | |
19 | /// Global ID for the EFI_VGA_MINI_PORT_PROTOCOL\r | |
20 | ///\r | |
21 | #define EFI_VGA_MINI_PORT_PROTOCOL_GUID \\r | |
22 | { \\r | |
23 | 0xc7735a2f, 0x88f5, 0x4882, {0xae, 0x63, 0xfa, 0xac, 0x8c, 0x8b, 0x86, 0xb3 } \\r | |
24 | }\r | |
25 | \r | |
26 | ///\r | |
27 | /// Forward declaration for the EFI_VGA_MINI_PORT_PROTOCOL\r | |
28 | ///\r | |
29 | typedef struct _EFI_VGA_MINI_PORT_PROTOCOL EFI_VGA_MINI_PORT_PROTOCOL;\r | |
30 | \r | |
31 | /**\r | |
32 | Sets the text display mode of a VGA controller.\r | |
33 | \r | |
34 | Sets the text display mode of the VGA controller to the mode specified by \r | |
35 | ModeNumber. A ModeNumber of 0 is a request for an 80x25 text mode. A \r | |
36 | ModeNumber of 1 is a request for an 80x50 text mode. If ModeNumber is greater\r | |
37 | than MaxModeNumber, then EFI_UNSUPPORTED is returned. If the VGA controller \r | |
38 | is not functioning properly, then EFI_DEVICE_ERROR is returned. If the VGA\r | |
39 | controller is sucessfully set to the mode number specified by ModeNumber, then \r | |
40 | EFI_SUCCESS is returned.\r | |
41 | \r | |
42 | @param[in] This A pointer to the EFI_VGA_MINI_PORT_PROTOCOL instance.\r | |
43 | @param[in] ModeNumber The requested mode number. 0 for 80x25. 1 for 80x5.\r | |
44 | \r | |
45 | @retval EFI_SUCCESS The mode number was set\r | |
46 | @retval EFI_UNSUPPORTED The mode number specified by ModeNumber is not supported.\r | |
47 | @retval EFI_DEVICE_ERROR The device is not functioning properly.\r | |
48 | \r | |
49 | **/\r | |
50 | typedef\r | |
51 | EFI_STATUS\r | |
52 | (EFIAPI *EFI_VGA_MINI_PORT_SET_MODE)(\r | |
53 | IN EFI_VGA_MINI_PORT_PROTOCOL *This,\r | |
54 | IN UINTN ModeNumber\r | |
55 | );\r | |
56 | \r | |
57 | struct _EFI_VGA_MINI_PORT_PROTOCOL {\r | |
58 | EFI_VGA_MINI_PORT_SET_MODE SetMode;\r | |
59 | ///\r | |
60 | /// MMIO base address of the VGA text mode framebuffer. Typically set to 0xB8000.\r | |
61 | ///\r | |
62 | UINT64 VgaMemoryOffset;\r | |
63 | ///\r | |
64 | /// I/O Port address for the VGA CRTC address register Typically set to 0x3D4.\r | |
65 | ///\r | |
66 | UINT64 CrtcAddressRegisterOffset;\r | |
67 | ///\r | |
68 | /// I/O Port address for the VGA CRTC data register. Typically set to 0x3D5.\r | |
69 | ///\r | |
70 | UINT64 CrtcDataRegisterOffset;\r | |
71 | ///\r | |
72 | /// PCI Controller MMIO BAR index of the VGA text mode frame buffer. Typically \r | |
73 | /// set to EFI_PCI_IO_PASS_THROUGH_BAR\r | |
74 | ///\r | |
75 | UINT8 VgaMemoryBar;\r | |
76 | ///\r | |
77 | /// PCI Controller I/O BAR index of the VGA CRTC address register. Typically \r | |
78 | /// set to EFI_PCI_IO_PASS_THROUGH_BAR\r | |
79 | ///\r | |
80 | UINT8 CrtcAddressRegisterBar;\r | |
81 | ///\r | |
82 | /// PCI Controller I/O BAR index of the VGA CRTC data register. Typically set \r | |
83 | /// to EFI_PCI_IO_PASS_THROUGH_BAR\r | |
84 | ///\r | |
85 | UINT8 CrtcDataRegisterBar;\r | |
86 | ///\r | |
87 | /// The maximum number of text modes that this VGA controller supports.\r | |
88 | ///\r | |
89 | UINT8 MaxMode;\r | |
90 | };\r | |
91 | \r | |
92 | extern EFI_GUID gEfiVgaMiniPortProtocolGuid;\r | |
93 | \r | |
94 | #endif\r |