mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-27 12:15:19 +01:00
113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
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/* Copied from 915 resolution created by steve tomljenovic
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*
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* This code is based on the techniques used in :
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*
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* - 855patch. Many thanks to Christian Zietz (czietz gmx net)
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* for demonstrating how to shadow the VBIOS into system RAM
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* and then modify it.
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*
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* - 1280patch by Andrew Tipton (andrewtipton null li).
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*
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* - 855resolution by Alain Poirier
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*
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* This source code is into the public domain.
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*/
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#ifndef __915_RESOLUTION_H
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#define __915_RESOLUTION_H
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#include "edid.h"
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#define NEW(a) ((a *)(malloc(sizeof(a))))
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#define FREE(a) (free(a))
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#ifdef AUTORES_DEBUG
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#define PRINT(a, b...) printf(a, ##b);
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#else
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#define PRINT(a, b...) verbose(a, ##b);
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#endif
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#define VBIOS_START 0xc0000
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#define VBIOS_SIZE 0x10000
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#define FALSE 0
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#define TRUE 1
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typedef struct {
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unsigned char width;
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unsigned char height;
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} s_aspect;
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typedef enum {
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CT_UNKWN, CT_830, CT_845G, CT_855GM, CT_865G,
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CT_915G, CT_915GM, CT_945G, CT_945GM, CT_945GME, CT_946GZ,
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CT_955X, CT_G965, CT_Q965, CT_965GM, CT_975X,
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CT_P35, CT_X48, CT_B43, CT_Q45, CT_P45,
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CT_GM45, CT_G41, CT_G31, CT_G45, CT_500
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} chipset_type;
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typedef enum {
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BT_UNKWN, BT_1, BT_2, BT_3, BT_ATI_1, BT_ATI_2, BT_NVDA
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} bios_type;
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typedef struct {
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UInt32 clock;
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UInt16 x;
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UInt16 hsyncstart;
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UInt16 hsyncend;
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UInt16 htotal;
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UInt16 y;
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UInt16 vsyncstart;
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UInt16 vsyncend;
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UInt16 vtotal;
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} generic_modeline;
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typedef struct {
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UInt32 chipset_id;
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chipset_type chipset;
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bios_type bios;
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UInt32 bios_fd;
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unsigned char* bios_backup_ptr;
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unsigned char* bios_ptr;
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char * mode_table;
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char * nv_mode_table_2;
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UInt32 mode_table_size;
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UInt32 nv_mode_table_2_size;
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UInt32 modeline_num;
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UInt32 nv_modeline_num_2;
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UInt8 b1, b2;
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s_aspect aspect_ratio;
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UInt8 unlocked;
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} vbios_map;
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vbios_map * open_vbios(chipset_type);
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void close_vbios (vbios_map*);
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void unlock_vbios(vbios_map*);
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void relock_vbios(vbios_map*);
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void save_vbios(vbios_map*);
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void restore_vbios(vbios_map*);
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void gtf_timings(UInt32 x, UInt32 y, UInt32 freq,
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unsigned long *clock,
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UInt16 *hsyncstart, UInt16 *hsyncend, UInt16 *hblank,
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UInt16 *vsyncstart, UInt16 *vsyncend, UInt16 *vblank);
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void cvt_timings(UInt32 x, UInt32 y, UInt32 freq,
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unsigned long *clock,
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UInt16 *hsyncstart, UInt16 *hsyncend, UInt16 *hblank,
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UInt16 *vsyncstart, UInt16 *vsyncend, UInt16 *vblank, bool reduced);
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void patch_vbios(vbios_map*, UInt32, UInt32, UInt32, UInt32, UInt32);
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#endif
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