/*
* (C) Copyright 2002
* Hyperion Entertainment, Hans-JoergF@hyperion-entertainment.com
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <devices.h>
#include "memio.h"
#include <part.h>
unsigned char *cursor_position;
unsigned int cursor_row;
unsigned int cursor_col;
unsigned char current_attr;
unsigned int video_numrows = 25;
unsigned int video_numcols = 80;
unsigned int video_scrolls = 0;
#define VIDEO_BASE (unsigned char *)0xFD0B8000
#define VIDEO_ROWS video_numrows
#define VIDEO_COLS video_numcols
#define VIDEO_PITCH (2 * video_numcols)
#define VIDEO_SIZE (video_numrows * video_numcols * 2)
#define VIDEO_NAME "vga"
void video_test(void);
void video_putc(char ch);
void video_puts(char *string);
void video_scroll(int rows);
void video_banner(void);
int video_init(void);
int video_start(void);
int video_rows(void);
int video_cols(void);
char *prompt_string = "=>";
void video_set_color(unsigned char attr)
{
unsigned char *fb = (unsigned char *)VIDEO_BASE;
int i;
current_attr = video_get_attr();
for (i=0; i<VIDEO_SIZE; i+=2)
{
*(fb+i+1) = current_attr;
}
}
unsigned char video_get_attr(void)
{
char *s;
unsigned char attr;
attr = 0x0f;
s = getenv("vga_fg_color");
if (s)
{
attr = atoi(s);
}
s = getenv("vga_bg_color");
if (s)
{
attr |= atoi(s)<<4;
}
return attr;
}
int video_inited = 0;
int drv_video_init(void)
{
int error, devices = 1 ;
device_t vgadev ;
if (video_inited) return 1;
video_inited = 1;
video_init();
memset (&vgadev, 0, sizeof(vgadev));
strcpy(vgadev.name, VIDEO_NAME);
vgadev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_SYSTEM;
vgadev.putc = video_putc;
vgadev.puts = video_puts;
vgadev.getc = NULL;
vgadev.tstc = NULL;
vgadev.start = video_start;
error = device_register (&vgadev);
if (error == 0)
{
char *s = getenv("stdout");
if (s && strcmp(s, VIDEO_NAME)==0)
{
if (overwrite_console()) return 1;
error = console_assign(stdout, VIDEO_NAME);
if (error == 0) return 1;
else return error;
}
return 1;
}
return error;
}
int video_init(void)
{
cursor_position = VIDEO_BASE; /* Color text display base */
cursor_row = 0;
cursor_col = 0;
current_attr = video_get_attr(); /* Currently selected value for attribute. */
/* video_test(); */
video_set_color(current_attr);
return 0;
}
void video_set_cursor(int line, int column)
{
unsigned short offset = line*video_numcols + column;
cursor_position = VIDEO_BASE + line*VIDEO_PITCH + column*2;
out_byte(0x3D4, 0x0E);
out_byte(0x3D5, offset/256);
out_byte(0x3D4, 0x0F);
out_byte(0x3D5, offset%256);
}
void video_write_char(int character)
{
*cursor_position = character;
*(cursor_position+1) = current_attr;
}
void video_test(void)
{
}
void video_putc(char ch)
{
switch(ch)
{
case '\n':
cursor_col = 0;
cursor_row += 1;
break;
case '\r':
cursor_col = 0;
break;
case '\b':
if (cursor_col) cursor_col--;
else return;
break;
case '\t':
cursor_col = (cursor_col/8+1)*8;
break;
default:
video_write_char(ch);
cursor_col++;
if (cursor_col > VIDEO_COLS-1)
{
cursor_row++;
cursor_col=0;
}
}
if (cursor_row > VIDEO_ROWS-1)
video_scroll(1);
video_set_cursor(cursor_row, cursor_col);
}
void video_scroll(int rows)
{
unsigned short clear = ((unsigned short)current_attr) | (' '<<8);
unsigned short* addr16 = &((unsigned short *)VIDEO_BASE)[(VIDEO_ROWS-rows)*VIDEO_COLS];
int i;
char *s;
s = getenv("vga_askscroll");
video_scrolls += rows;
if (video_scrolls >= video_numrows)
{
if (s && strcmp(s, "yes"))
{
while (-1 == tstc());
}
video_scrolls = 0;
}
memcpy(VIDEO_BASE, VIDEO_BASE+rows*(VIDEO_COLS*2), (VIDEO_ROWS-rows)*(VIDEO_COLS*2));
for (i = 0 ; i < rows * VIDEO_COLS ; i++)
addr16[i] = clear;
cursor_row-=rows;
cursor_col=0;
}
void video_puts(char *string)
{
while (*string)
{
video_putc(*string);
string++;
}
}
int video_start(void)
{
return 0;
}
unsigned char video_single_box[] =
{
218, 196, 191,
179, 179,
192, 196, 217
};
unsigned char video_double_box[] =
{
201, 205, 187,
186, 186,
200, 205, 188
};
unsigned char video_single_title[] =
{
195, 196, 180, 180, 195
};
unsigned char video_double_title[] =
{
204, 205, 185, 181, 198
};
#define SINGLE_BOX 0
#define DOUBLE_BOX 1
unsigned char *video_addr(int x, int y)
{
return VIDEO_BASE + 2*(VIDEO_COLS*y) + 2*x;
}
void video_bios_print_string(char *s, int x, int y, int attr, int count)
{
int cattr = current_attr;
if (attr != -1) current_attr = attr;
video_set_cursor(x,y);
while (count)
{
char c = *s++;
if (attr == -1) current_attr = *s++;
video_putc(c);
count--;
}
}
void video_draw_box(int style, int attr, char *title, int separate, int x, int y, int w, int h)
{
unsigned char *fb, *fb2;
unsigned char *st = (style == SINGLE_BOX)?video_single_box : video_double_box;
unsigned char *ti = (style == SINGLE_BOX)?video_single_title : video_double_title;
int i;
fb = video_addr(x,y);
*(fb) = st[0];
*(fb+1) = attr;
fb += 2;
fb2 = video_addr(x,y+h-1);
*(fb2) = st[5];
*(fb2+1) = attr;
fb2 += 2;
for (i=0; i<w-2;i++)
{
*fb = st[1];
fb++;
*fb = attr;
fb++;
*fb2 = st[6];
fb2++;
*fb2 = attr;
fb2++;
}
*fb = st[2];
*(fb+1) = attr;
*fb2 = st[7];
*(fb2+1) = attr;
fb = video_addr(x, y+1);
fb2 = video_addr(x+w-1, y+1);
for (i=0; i<h-2; i++)
{
*fb = st[3];
*(fb+1) = attr; fb += 2*VIDEO_COLS;
*fb2 = st[4];
*(fb2+1) = attr; fb2 += 2*VIDEO_COLS;
}
/* Draw title */
if (title)
{
if (separate == 0)
{
fb = video_addr(x+1, y);
*fb = ti[3];
fb += 2;
*fb = ' ';
fb += 2;
while (*title)
{
*fb = *title;
fb ++;
*fb = attr;
fb++; title++;
}
*fb = ' ';
fb += 2;
*fb = ti[4];
}
else
{
fb = video_addr(x, y+2);
*fb = ti[0];
fb += 2;
for (i=0; i<w-2; i++)
{
*fb = ti[1];
*(fb+1) = attr;
fb += 2;
}
*fb = ti[2];
*(fb+1) = attr;
fb = video_addr(x+1, y+1);
for (i=0; i<w-2; i++)
{
*fb = ' ';
*(fb+1) = attr;
fb += 2;
}
fb = video_addr(x+2, y+1);
while (*title)
{
*fb = *title;
*(fb+1) = attr;
fb += 2;
title++;
}
}
}
}
void video_draw_text(int x, int y, int attr, char *text)
{
unsigned char *fb = video_addr(x,y);
while (*text)
{
*fb++ = *text++;
*fb++ = attr;
}
}
void video_save_rect(int x, int y, int w, int h, void *save_area, int clearchar, int clearattr)
{
unsigned char *save = (unsigned char *)save_area;
unsigned char *fb = video_addr(x,y);
int i,j;
for (i=0; i<h; i++)
{
unsigned char *fbb = fb;
for (j=0; j<w; j++)
{
*save ++ = *fb;
if (clearchar > 0) *fb = clearchar;
fb ++;
*save ++ = *fb;
if (clearattr > 0) *fb = clearattr;
}
fb = fbb + 2*VIDEO_COLS;
}
}
void video_restore_rect(int x, int y, int w, int h, void *save_area)
{
unsigned char *save = (unsigned char *)save_area;
unsigned char *fb = video_addr(x,y);
int i,j;
for (i=0; i<h; i++)
{
unsigned char *fbb = fb;
for (j=0; j<w; j++)
{
*fb ++ = *save ++;
*fb ++ = *save ++;
}
fb = fbb + 2*VIDEO_COLS;
}
}
int video_rows(void)
{
return VIDEO_ROWS;
}
int video_cols(void)
{
return VIDEO_COLS;
}
void video_size(int cols, int rows)
{
video_numrows = rows;
video_numcols = cols;
}
void video_clear(void)
{
unsigned short *fbb = (unsigned short *)0xFD0B8000;
int i,j;
unsigned short val = 0x2000 | current_attr;
for (i=0; i<video_rows(); i++)
{
for (j=0; j<video_cols(); j++)
{
*fbb++ = val;
}
}
video_set_cursor(0,0);
cursor_row = 0;
cursor_col = 0;
}
#ifdef EASTEREGG
int video_easteregg_active = 0;
void video_easteregg(void)
{
video_easteregg_active = 1;
}
#endif
extern block_dev_desc_t * ide_get_dev(int dev);
extern char version_string[];
void video_banner(void)
{
block_dev_desc_t *ide;
DECLARE_GLOBAL_DATA_PTR;
int i;
char *s;
int maxdev;
if (video_inited == 0) return;
#ifdef EASTEREGG
if (video_easteregg_active)
{
prompt_string="";
video_clear();
printf("\n");
printf(" **** COMMODORE 64 BASIC X2 ****\n\n");
printf(" 64K RAM SYSTEM 38911 BASIC BYTES FREE\n\n");
printf("READY\n");
}
else
{
#endif
s = getenv("ide_maxbus");
if (s)
maxdev = atoi(s) * 2;
else
maxdev = 4;
s = getenv("stdout");
if (s && strcmp(s, "serial") == 0)
return;
video_clear();
printf("%s\n\nCPU: ", version_string);
checkcpu();
printf("DRAM: %ld MB\n", gd->bd->bi_memsize/(1024*1024));
printf("FSB: %ld MHz\n", gd->bd->bi_busfreq/1000000);
printf("\n---- Disk summary ----\n");
for (i = 0; i < maxdev; i++)
{
ide = ide_get_dev(i);
printf("Device %d: ", i);
dev_print(ide);
}
/*
video_draw_box(SINGLE_BOX, 0x0F, "Test 1", 0, 0,18, 72, 4);
video_draw_box(DOUBLE_BOX, 0x0F, "Test 2", 1, 4,10, 50, 6);
video_draw_box(DOUBLE_BOX, 0x0F, "Test 3", 0, 40, 3, 20, 5);
video_draw_text(1, 4, 0x2F, "Highlighted options");
video_draw_text(1, 5, 0x0F, "Non-selected option");
video_draw_text(1, 6, 0x07, "disabled option");
*/
#ifdef EASTEREGG
}
#endif
}
