u-boot/lib_i386/video.c
Jean-Christophe PLAGNIOL-VILLARD 52cb4d4fb3 stdio/device: rework function naming convention
So far the console API uses the following naming convention:

	======Extract======
	typedef struct device_t;

	int	device_register (device_t * dev);
	int	devices_init (void);
	int	device_deregister(char *devname);
	struct list_head* device_get_list(void);
	device_t* device_get_by_name(char* name);
	device_t* device_clone(device_t *dev);
	=======

which is too generic and confusing.

Instead of using device_XX and device_t we change this
into stdio_XX and stdio_dev

This will also allow to add later a generic device mechanism in order
to have support for multiple devices and driver instances.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

Edited commit message.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2009-07-18 00:27:46 +02:00

237 lines
4.7 KiB
C

/*
* (C) Copyright 2002
* Daniel Engström, Omicron Ceti AB, daniel@omicron.se
*
* 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 <pci.h>
#include <stdio_dev.h>
#include <i8042.h>
#include <asm/ptrace.h>
#include <asm/realmode.h>
#include <asm/io.h>
#include <asm/pci.h>
/* basic textmode I/O from linux kernel */
static char *vidmem = (char *)0xb8000;
static int vidport;
static int lines, cols;
static int orig_x, orig_y;
static void beep(int dur)
{
int i;
outb_p(3, 0x61);
for (i=0;i<10*dur;i++) {
udelay(1000);
}
outb_p(0, 0x61);
}
static void scroll(void)
{
int i;
memcpy ( vidmem, vidmem + cols * 2, ( lines - 1 ) * cols * 2 );
for ( i = ( lines - 1 ) * cols * 2; i < lines * cols * 2; i += 2 )
vidmem[i] = ' ';
}
static void __video_putc(const char c, int *x, int *y)
{
if (c == '\n') {
(*x) = 0;
if ( ++(*y) >= lines ) {
scroll();
(*y)--;
}
} else if (c == '\b') {
if ((*x) != 0) {
--(*x);
vidmem [ ( (*x) + cols * (*y) ) * 2 ] = ' ';
}
} else if (c == '\r') {
(*x) = 0;
} else if (c == '\a') {
beep(3);
} else if (c == '\t') {
__video_putc(' ', x, y);
__video_putc(' ', x, y);
__video_putc(' ', x, y);
__video_putc(' ', x, y);
__video_putc(' ', x, y);
__video_putc(' ', x, y);
__video_putc(' ', x, y);
__video_putc(' ', x, y);
} else if (c == '\v') {
switch ((*x) % 8) {
case 0:
__video_putc(' ', x, y);
case 7:
__video_putc(' ', x, y);
case 6:
__video_putc(' ', x, y);
case 5:
__video_putc(' ', x, y);
case 4:
__video_putc(' ', x, y);
case 3:
__video_putc(' ', x, y);
case 2:
__video_putc(' ', x, y);
case 1:
__video_putc(' ', x, y);
}
} else if (c == '\f') {
int i;
for (i=0;i<lines*cols*2;i+=2) {
vidmem[i] = 0;
}
(*x) = 0;
(*y) = 0;
} else {
vidmem [ ( (*x) + cols * (*y) ) * 2 ] = c;
if ( ++(*x) >= cols ) {
(*x) = 0;
if ( ++(*y) >= lines ) {
scroll();
(*y)--;
}
}
}
}
static void video_putc(const char c)
{
int x,y,pos;
x = orig_x;
y = orig_y;
__video_putc(c, &x, &y);
orig_x = x;
orig_y = y;
pos = (x + cols * y) * 2; /* Update cursor position */
outb_p(14, vidport);
outb_p(0xff & (pos >> 9), vidport+1);
outb_p(15, vidport);
outb_p(0xff & (pos >> 1), vidport+1);
}
static void video_puts(const char *s)
{
int x,y,pos;
char c;
x = orig_x;
y = orig_y;
while ( ( c = *s++ ) != '\0' ) {
__video_putc(c, &x, &y);
}
orig_x = x;
orig_y = y;
pos = (x + cols * y) * 2; /* Update cursor position */
outb_p(14, vidport);
outb_p(0xff & (pos >> 9), vidport+1);
outb_p(15, vidport);
outb_p(0xff & (pos >> 1), vidport+1);
}
int video_init(void)
{
u16 pos;
static struct stdio_dev vga_dev;
static struct stdio_dev kbd_dev;
vidmem = (char *) 0xb8000;
vidport = 0x3d4;
lines = 25;
cols = 80;
outb_p(14, vidport);
pos = inb_p(vidport+1);
pos <<= 8;
outb_p(15, vidport);
pos |= inb_p(vidport+1);
orig_x = pos%cols;
orig_y = pos/cols;
#if 0
printf("pos %x %d %d\n", pos, orig_x, orig_y);
#endif
if (orig_y > lines) {
orig_x = orig_y =0;
}
memset(&vga_dev, 0, sizeof(vga_dev));
strcpy(vga_dev.name, "vga");
vga_dev.ext = 0;
vga_dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_SYSTEM;
vga_dev.putc = video_putc; /* 'putc' function */
vga_dev.puts = video_puts; /* 'puts' function */
vga_dev.tstc = NULL; /* 'tstc' function */
vga_dev.getc = NULL; /* 'getc' function */
if (stdio_register(&vga_dev) == 0) {
return 1;
}
if (i8042_kbd_init()) {
return 1;
}
memset(&kbd_dev, 0, sizeof(kbd_dev));
strcpy(kbd_dev.name, "kbd");
kbd_dev.ext = 0;
kbd_dev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
kbd_dev.putc = NULL; /* 'putc' function */
kbd_dev.puts = NULL; /* 'puts' function */
kbd_dev.tstc = i8042_tstc; /* 'tstc' function */
kbd_dev.getc = i8042_getc; /* 'getc' function */
if (stdio_register(&kbd_dev) == 0) {
return 1;
}
return 0;
}
int drv_video_init(void)
{
if (video_bios_init()) {
return 1;
}
return video_init();
}