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1/*␊
2 * resolution.h␊
3 * ␊
4 *␊
5 * Created by Evan Lojewski on 3/4/10.␊
6 * Copyright 2009. All rights reserved.␊
7 *␊
8 */␊
9␊
10␊
11#ifndef __RESOLUTION_H␊
12#define __RESOLUTION_H␊
13␊
14#include "shortatombios.h"␊
15#include "edid.h"␊
16␊
17␊
18void patchVideoBios();␊
19␊
20␊
21␊
22/* Copied from 915 resolution created by steve tomljenovic␊
23 *␊
24 * This code is based on the techniques used in :␊
25 *␊
26 * - 855patch. Many thanks to Christian Zietz (czietz gmx net)␊
27 * for demonstrating how to shadow the VBIOS into system RAM␊
28 * and then modify it.␊
29 *␊
30 * - 1280patch by Andrew Tipton (andrewtipton null li).␊
31 *␊
32 * - 855resolution by Alain Poirier␊
33 *␊
34 * This source code is into the public domain.␊
35 */␊
36␊
37#define VBIOS_START 0xc0000␊
38#define VBIOS_SIZE 0x10000␊
39␊
40#define FALSE 0␊
41#define TRUE 1␊
42␊
43#define MODE_TABLE_OFFSET_845G 617␊
44␊
45␊
46#define ATI_SIGNATURE1 "ATI MOBILITY RADEON"␊
47#define ATI_SIGNATURE2 "ATI Technologies Inc"␊
48#define NVIDIA_SIGNATURE "NVIDIA Corp"␊
49#define INTEL_SIGNATURE "Intel Corp"␊
50␊
51␊
52␊
53/*␊
54 * NVidia Defines and structures␊
55 */␊
56␊
57#define OFFSET_TO_VESA_TABLE_INDEX 2␊
58␊
59typedef struct {␊
60␉unsigned char␉ucTable_Major;␊
61␉unsigned char␉ucTable_Minor;␊
62␉unsigned char␉ucTable_Rev;␊
63␉unsigned short␉usTable_Size;␊
64} NV_COMMON_TABLE_HEADER;␊
65␊
66typedef struct {␊
67␉short reserved1;␊
68␉short reserved2;␊
69␉short reserved3;␊
70} NV_RESERVED;␊
71␊
72typedef struct {␊
73␉unsigned short␉usPixel_Clock;␊
74␉unsigned short␉usH_Active;␊
75␉NV_RESERVED␉␉reserved1;␊
76␉unsigned short␉usH_SyncStart;␊
77␉unsigned short␉usH_SyncEnd;␊
78␉unsigned short␉usH_Total;␊
79␉unsigned short␉usV_Active;␊
80␉NV_RESERVED␉␉reserved2;␊
81␉unsigned short␉usV_SyncStart;␊
82␉unsigned short␉usV_SyncEnd;␊
83␉unsigned short␉usV_Total;␊
84␉unsigned short␉reserved3;␊
85} NV_MODELINE;␊
86␊
87typedef struct {␊
88␉NV_COMMON_TABLE_HEADER␉sHeader;␊
89␉NV_MODELINE␉*␉␉␉sModelines;␊
90} NV_VESA_TABLE;␊
91␊
92/*---*/␊
93␊
94␊
95typedef enum {␊
96␉CT_UNKWN, CT_UNKWN_INTEL, CT_830, CT_845G, CT_855GM, CT_865G, ␊
97␉CT_915G, CT_915GM, CT_945G, CT_945GM, CT_945GME, CT_946GZ, ␊
98␉CT_955X, CT_G965, CT_Q965, CT_965GM, CT_975X, ␊
99␉CT_P35, CT_X48, CT_B43, CT_Q45, CT_P45,␊
100␉CT_GM45, CT_G41, CT_G31, CT_G45, CT_500, CT_3150␊
101} chipset_type;␊
102␊
103␊
104␊
105typedef enum {␊
106␉BT_UNKWN, BT_1, BT_2, BT_3, BT_ATI_1, BT_ATI_2, BT_NVDA, BT_INTEL␊
107} bios_type;␊
108␊
109␊
110typedef struct {␊
111␉char *base;␊
112␉ATOM_ROM_HEADER *AtomRomHeader;␊
113␉unsigned short *MasterCommandTables;␊
114␉unsigned short *MasterDataTables;␊
115} bios_tables_t;␊
116␊
117typedef struct {␊
118␉UInt8 mode;␊
119␉UInt8 bits_per_pixel;␊
120␉UInt16 resolution;␊
121␉UInt8 unknown;␊
122} __attribute__((packed)) vbios_mode;␊
123␊
124typedef struct {␊
125␉UInt8 unknow1[2];␊
126␉UInt8 x1;␊
127␉UInt8 x_total;␊
128␉UInt8 x2;␊
129␉UInt8 y1;␊
130␉UInt8 y_total;␊
131␉UInt8 y2;␊
132} __attribute__((packed)) vbios_resolution_type1;␊
133␊
134typedef struct {␊
135␉unsigned long clock;␊
136␉␊
137␉UInt16 x1;␊
138␉UInt16 htotal;␊
139␉UInt16 x2;␊
140␉UInt16 hblank;␊
141␉UInt16 hsyncstart;␊
142␉UInt16 hsyncend;␊
143␉UInt16 y1;␊
144 UInt16 vtotal;␊
145 UInt16 y2;␊
146␉UInt16 vblank;␊
147␉UInt16 vsyncstart;␊
148␉UInt16 vsyncend;␊
149} __attribute__((packed)) vbios_modeline_type2;␊
150␊
151typedef struct {␊
152␉UInt8 xchars;␊
153␉UInt8 ychars;␊
154␉UInt8 unknown[4];␊
155␉␊
156␉vbios_modeline_type2 modelines[];␊
157} __attribute__((packed)) vbios_resolution_type2;␊
158␊
159typedef struct {␊
160␉unsigned long clock;␊
161␉␊
162␉UInt16 x1;␊
163␉UInt16 htotal;␊
164␉UInt16 x2;␊
165␉UInt16 hblank;␊
166␉UInt16 hsyncstart;␊
167␉UInt16 hsyncend;␊
168␉␊
169␉UInt16 y1;␊
170␉UInt16 vtotal;␊
171␉UInt16 y2;␊
172␉UInt16 vblank;␊
173␉UInt16 vsyncstart;␊
174␉UInt16 vsyncend;␊
175␉␊
176␉UInt16 timing_h;␊
177␉UInt16 timing_v;␊
178␉␊
179␉UInt8 unknown[6];␊
180} __attribute__((packed)) vbios_modeline_type3;␊
181␊
182typedef struct {␊
183␉unsigned char unknown[6];␊
184␉␊
185 vbios_modeline_type3 modelines[];␊
186} __attribute__((packed)) vbios_resolution_type3;␊
187␊
188typedef struct {␊
189␉UInt32 chipset_id;␊
190␉chipset_type chipset;␊
191␉bios_type bios;␊
192␉␊
193␉bios_tables_t ati_tables;␊
194␊
195␉␊
196␉UInt32 bios_fd;␊
197␉char* bios_ptr;␊
198␉␊
199␉vbios_mode * mode_table;␊
200␉char * ati_mode_table;␊
201␉char * nv_mode_table;␊
202␊
203␉UInt32 mode_table_size;␊
204␉UInt8 b1, b2;␊
205␉␊
206␉UInt8 unlocked;␊
207} vbios_map;␊
208␊
209␊
210␊
211vbios_map * open_vbios(chipset_type);␊
212void close_vbios (vbios_map*);␊
213void unlock_vbios(vbios_map*);␊
214void relock_vbios(vbios_map*);␊
215void set_mode(vbios_map*, UInt32, UInt32, UInt32, UInt32, UInt32);␊
216␊
217#endif //__RESOLUTION_H␊
218

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