| #ifndef __VGABIOS_H |
| #define __VGABIOS_H |
| |
| #include "types.h" // u8 |
| #include "farptr.h" // struct segoff_s |
| |
| // standard BIOS Video Parameter Table |
| struct VideoParam_s { |
| u8 twidth; |
| u8 theightm1; |
| u8 cheight; |
| u16 slength; |
| u8 sequ_regs[4]; |
| u8 miscreg; |
| u8 crtc_regs[25]; |
| u8 actl_regs[20]; |
| u8 grdc_regs[9]; |
| } PACKED; |
| |
| extern struct VideoParam_s video_param_table[29]; |
| |
| // Save/Restore flags |
| #define SR_HARDWARE 0x0001 |
| #define SR_BDA 0x0002 |
| #define SR_DAC 0x0004 |
| #define SR_REGISTERS 0x0008 |
| #define SR_SAVE 0x0100 |
| #define SR_RESTORE 0x0200 |
| |
| // Mode flags |
| #define MF_LEGACY 0x0001 |
| #define MF_GRAYSUM 0x0002 |
| #define MF_NOPALETTE 0x0008 |
| #define MF_CUSTOMCRTC 0x0800 |
| #define MF_LINEARFB 0x4000 |
| #define MF_NOCLEARMEM 0x8000 |
| #define MF_VBEFLAGS 0xfe00 |
| |
| // Memory model types |
| #define MM_TEXT 0x00 |
| #define MM_CGA 0x01 |
| #define MM_HERCULES 0x02 |
| #define MM_PLANAR 0x03 |
| #define MM_PACKED 0x04 |
| #define MM_NON_CHAIN_4_256 0x05 |
| #define MM_DIRECT 0x06 |
| #define MM_YUV 0x07 |
| |
| struct vgamode_s { |
| u8 memmodel; |
| u16 width; |
| u16 height; |
| u8 depth; |
| u8 cwidth; |
| u8 cheight; |
| u16 sstart; |
| }; |
| |
| // Graphics pixel operations. |
| struct gfx_op { |
| struct vgamode_s *vmode_g; |
| u32 linelength; |
| u32 displaystart; |
| |
| u8 op; |
| u16 x, y; |
| |
| u8 pixels[8]; |
| u16 xlen, ylen; |
| u16 srcy; |
| }; |
| |
| #define GO_READ8 1 |
| #define GO_WRITE8 2 |
| #define GO_MEMSET 3 |
| #define GO_MEMMOVE 4 |
| |
| // Debug settings |
| #define DEBUG_VGA_POST 1 |
| #define DEBUG_VGA_10 3 |
| |
| // vgafonts.c |
| extern u8 vgafont8[]; |
| extern u8 vgafont14[]; |
| extern u8 vgafont16[]; |
| extern u8 vgafont14alt[]; |
| extern u8 vgafont16alt[]; |
| |
| // vgainit.c |
| extern struct VideoSavePointer_s video_save_pointer_table; |
| |
| // vgabios.c |
| extern int VgaBDF; |
| extern int HaveRunInit; |
| #define SET_VGA(var, val) SET_FARVAR(get_global_seg(), (var), (val)) |
| struct carattr { |
| u8 car, attr, use_attr, pad; |
| }; |
| struct cursorpos { |
| u8 x, y, page, pad; |
| }; |
| int vga_bpp(struct vgamode_s *vmode_g); |
| u16 calc_page_size(u8 memmodel, u16 width, u16 height); |
| int bda_save_restore(int cmd, u16 seg, void *data); |
| struct vgamode_s *get_current_mode(void); |
| int vga_set_mode(int mode, int flags); |
| |
| // vgafb.c |
| void init_gfx_op(struct gfx_op *op, struct vgamode_s *vmode_g); |
| void handle_gfx_op(struct gfx_op *op); |
| void *text_address(struct cursorpos cp); |
| void vgafb_move_chars(struct vgamode_s *vmode_g, struct cursorpos dest |
| , struct cursorpos src, struct cursorpos movesize); |
| void vgafb_clear_chars(struct vgamode_s *vmode_g, struct cursorpos dest |
| , struct carattr ca, struct cursorpos movesize); |
| void vgafb_write_char(struct cursorpos cp, struct carattr ca); |
| struct carattr vgafb_read_char(struct cursorpos cp); |
| void vgafb_write_pixel(u8 color, u16 x, u16 y); |
| u8 vgafb_read_pixel(u16 x, u16 y); |
| |
| // vbe.c |
| extern u32 VBE_total_memory; |
| extern u32 VBE_capabilities; |
| extern u32 VBE_framebuffer; |
| extern u16 VBE_win_granularity; |
| #define VBE_OEM_STRING "SeaBIOS VBE(C) 2011" |
| #define VBE_VENDOR_STRING "SeaBIOS Developers" |
| #define VBE_PRODUCT_STRING "SeaBIOS VBE Adapter" |
| #define VBE_REVISION_STRING "Rev. 1" |
| struct bregs; |
| void handle_104f(struct bregs *regs); |
| |
| #endif // vgabios.h |