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Diffstat (limited to 'contrib/syslinux/latest/core/graphics.inc')
| -rw-r--r-- | contrib/syslinux/latest/core/graphics.inc | 353 |
1 files changed, 0 insertions, 353 deletions
diff --git a/contrib/syslinux/latest/core/graphics.inc b/contrib/syslinux/latest/core/graphics.inc deleted file mode 100644 index a8d2851..0000000 --- a/contrib/syslinux/latest/core/graphics.inc +++ /dev/null @@ -1,353 +0,0 @@ -;; ----------------------------------------------------------------------- -;; -;; Copyright 1994-2008 H. Peter Anvin - All Rights Reserved -;; -;; This program is free software; you can redistribute it and/or modify -;; it under the terms of the GNU General Public License as published by -;; the Free Software Foundation, Inc., 53 Temple Place Ste 330, -;; Boston MA 02111-1307, USA; either version 2 of the License, or -;; (at your option) any later version; incorporated herein by reference. -;; -;; ----------------------------------------------------------------------- - -; ---------------------------------------------------------------------------- -; VGA splash screen code -; ---------------------------------------------------------------------------- - -; -; vgadisplayfile: -; Display a graphical splash screen. -; The file is already opened on the top of the getc stack. -; -; Assumes CS == DS == ES. -; - section .text16 - -vgadisplayfile: - ; This is a cheap and easy way to make sure the screen is - ; cleared in case we were in graphics mode already - call vgaclearmode - call vgasetmode - jnz .error_nz - -.graphalready: - ; Load the header. - mov cx,4+2*2+16*3 - mov di,LSSHeader -.gethdr: - call getc - stosb - loop .gethdr - jc .error - - ; The header WILL be in the first chunk. - cmp dword [LSSMagic],0x1413f33d ; Magic number -.error_nz: jne .error - - mov dx,GraphColorMap ; Color map offset - mov ax,1012h ; Set RGB registers - xor bx,bx ; First register number - mov cx,16 ; 16 registers - int 10h - -.movecursor: - mov ax,[GraphYSize] ; Number of pixel rows - mov dx,[VGAFontSize] - add ax,dx - dec ax - div dl - xor dx,dx ; Set column to 0 - cmp al,[VidRows] - jb .rowsok - mov al,[VidRows] - dec al -.rowsok: - mov dh,al - mov ah,2 - xor bx,bx - int 10h ; Set cursor below image - - mov cx,[GraphYSize] ; Number of graphics rows - mov word [VGAPos],0 - -.drawpixelrow: - push cx - mov di,VGARowBuffer - ; Pre-clear the row buffer - push di - push di - mov cx,640/4 - xor eax,eax - rep stosd - pop di - mov cx,[GraphXSize] - call rledecode ; Decode one row - pop si - mov di,VGAPlaneBuffer - push di - mov bp,640 - call packedpixel2vga - pop si - push es - mov di,0A000h ; VGA segment - mov es,di - mov di,[VGAPos] - call outputvga - pop es - add word [VGAPos],640/8 - pop cx - loop .drawpixelrow - -.error: - jmp close ; Tailcall! - -; -; rledecode: -; Decode a pixel row in RLE16 format. -; -; getc stack -> input -; CX -> pixel count -; ES:DI -> output (packed pixel) -; -rledecode: - xor dx,dx ; DL = last pixel, DH = nybble buffer -.loop: - call .getnybble - cmp al,dl - je .run ; Start of run sequence - stosb - mov dl,al - dec cx - jnz .loop -.done: - ret -.run: - xor bx,bx - call .getnybble - or bl,al - jz .longrun -.dorun: - push cx - mov cx,bx - mov al,dl - rep stosb - pop cx - sub cx,bx - ja .loop - jmp short .done -.longrun: - call .getnybble - mov bl,al - call .getnybble - shl al,4 - or bl,al - add bx,16 - jmp short .dorun - -.getnybble: - test dh,10h - jz .low - and dh,0Fh - mov al,dh - ret -.low: - call getc - mov dh,al - shr dh,4 - or dh,10h ; Nybble already read - and al,0Fh - ret - -; -; packedpixel2vga: -; Convert packed-pixel to VGA bitplanes -; -; DS:SI -> packed pixel string -; BP -> pixel count (multiple of 8) -; DS:DI -> output (four planes) -; -packedpixel2vga: - xor cx,cx -.planeloop: - inc cx - push si - push bp -.loop1: - mov bx,8 -.loop2: - lodsb - shr al,cl - rcl dl,1 ; VGA is bigendian. Sigh. - dec bx - jnz .loop2 - mov [di],dl - inc di - sub bp,byte 8 - ja .loop1 - pop bp - pop si - cmp cl,3 - jbe .planeloop - ret - -; -; outputvga: -; Output four subsequent lines of VGA data -; -; DS:SI -> four planes @ 640/8=80 bytes -; ES:DI -> pointer into VGA memory -; -outputvga: - mov dx,3C4h ; VGA Sequencer Register select port - mov al,2 ; Sequencer mask - out dx,al ; Select the sequencer mask - inc dx ; VGA Sequencer Register data port - dec ax ; AL <- 1 -.loop1: - out dx,al ; Select the bit plane to write - push di - mov cx,640/32 - rep movsd - pop di - add ax,ax - cmp al,8 - jbe .loop1 - ret - -; -; vgasetmode: -; Enable VGA graphics, if possible; return ZF=1 on success -; DS must be set to the base segment; ES is set to DS. -; -vgasetmode: - push ds - pop es - mov al,[UsingVGA] - cmp al,01h - je .success ; Nothing to do... - test al,04h - jz .notvesa - ; We're in a VESA mode, which means VGA; use VESA call - ; to revert the mode, and then call the conventional - ; mode-setting for good measure... - mov ax,4F02h - mov bx,0012h - int 10h - jmp .setmode -.notvesa: - mov ax,1A00h ; Get video card and monitor - xor bx,bx - int 10h - sub bl, 7 ; BL=07h and BL=08h OK - cmp bl, 1 - ja .error ; ZF=0 -; mov bx,TextColorReg -; mov dx,1009h ; Read color registers -; int 10h -.setmode: - mov ax,0012h ; Set mode = 640x480 VGA 16 colors - int 10h - mov dx,linear_color - mov ax,1002h ; Write color registers - int 10h - mov [UsingVGA], byte 1 - - ; Set GXPixCols and GXPixRows - mov dword [GXPixCols],640+(480 << 16) - - call use_font ; Set graphics font/data - mov byte [ScrollAttribute], 00h - -.success: - xor ax,ax ; Set ZF -.error: - ret - -; -; vgaclearmode: -; Disable VGA graphics. It is not safe to assume any value -; for DS or ES. -; -vgaclearmode: - push ds - push es - pushad - mov ax,cs - mov ds,ax - mov es,ax - mov al,[UsingVGA] - and al,al ; Already in text mode? - jz .done - test al,04h - jz .notvesa - mov ax,4F02h ; VESA return to normal video mode - mov bx,0003h - int 10h -.notvesa: - mov ax,0003h ; Return to normal video mode - int 10h -; mov dx,TextColorReg ; Restore color registers -; mov ax,1002h -; int 10h - mov [UsingVGA], byte 0 - - mov byte [ScrollAttribute], 07h - call use_font ; Restore text font/data -.done: - popad - pop es - pop ds - ret - -; -; vgashowcursor/vgahidecursor: -; If VGA graphics is enabled, draw a cursor/clear a cursor -; -vgashowcursor: - pushad - mov al,'_' - jmp short vgacursorcommon -vgahidecursor: - pushad - mov al,' ' -vgacursorcommon: - cmp [UsingVGA], byte 1 - jne .done - mov ah,09h - mov bx,0007h - mov cx,1 - int 10h -.done: - popad - ret - - - section .data16 - ; Map colors to consecutive DAC registers -linear_color db 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 0 - - ; See comboot.doc, INT 22h AX=0017h for the semantics - ; of this byte. -UsingVGA db 0 - - section .bss16 - alignb 4 -LSSHeader equ $ -LSSMagic resd 1 ; Magic number -GraphXSize resw 1 ; Width of splash screen file -GraphYSize resw 1 ; Height of splash screen file -GraphColorMap resb 3*16 -VGAPos resw 1 ; Pointer into VGA memory -VGAFilePtr resw 1 ; Pointer into VGAFileBuf -; TextColorReg resb 17 ; VGA color registers for text mode -%if IS_SYSLINUX -VGAFileBuf resb FILENAME_MAX+2 ; Unmangled VGA image name -%else -VGAFileBuf resb FILENAME_MAX ; Unmangled VGA image name -%endif -VGAFileBufEnd equ $ -VGAFileMBuf resb FILENAME_MAX ; Mangled VGA image name - - alignb 4 -VGARowBuffer resb 640+80 ; Decompression buffer -VGAPlaneBuffer resb (640/8)*4 ; Plane buffers |