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IDE support for primary and secondary channels.

video support.

improved floppy and ide support.
This commit is contained in:
Ronald G. Minnich 2002-12-16 17:57:49 +00:00
commit 14342bf376
11 changed files with 192 additions and 29 deletions
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12
src/lib/linuxbiosmain.c
View file

@ -26,6 +26,10 @@
#include <stdlib.h>
#include <boot/linuxbios_table.h>
#ifdef VIDEO_CONSOLE
#include <pc80/vga.h>
#endif
#include "do_inflate.h"
@ -147,11 +151,17 @@ int linuxbiosmain(unsigned long base, unsigned long totalram)
set_memory_size(empty_zero_page, 0x3c00, totalram - 2048);
post_code(0xfa);
printk_notice("command line - [%s]\n", cmd_line);
printk_notice("\ncommand line - [%s]\n", cmd_line);
set_command_line(empty_zero_page, cmd_line);
set_root_rdonly(empty_zero_page);
#ifdef VIDEO_CONSOLE
set_display(empty_zero_page, LINES, COLS);
#else
set_display(empty_zero_page, 25, 80);
#endif
set_initrd(empty_zero_page, initrd_start, initrd_size);
/* Reset to booting from this image as late as possible */

72
src/lib/video_subr.c
View file

@ -1,22 +1,50 @@
/*
*
* modified from original freebios code
* by Steve M. Gehlbach <steve@kesa.com>
*
*/
#include <video_subr.h>
#include <string.h>
#include <pc80/vga.h>
#include <cpu/p5/io.h>
void beep(int ms);
# This used to work but has not been tested recently.
// kludgy but this is only used here ...
static char *vidmem; /* The video buffer, should be replaced by symbol in ldscript.ld */
static int video_line, video_col;
int video_line, video_col;
#define LINES 25 /* Number of lines and */
#define COLS 80 /* columns on display */
#define VIDBUFFER 0xA000;
#define VIDBUFFER 0xB8000;
void memsetw(void *s, int c, unsigned int n)
{
int i;
u16 *ss = (u16 *) s;
for (i = 0; i < n; i++) {
ss[i] = ( u16 ) c;
}
}
void video_init(void)
{
// these are globals
video_line = 0;
video_col = 0;
vidmem = (char *) VIDBUFFER;
memset(vidmem, 0, 64*1024);
vidmem = (unsigned char *) VIDBUFFER;
// mainboard or chip specific init routines
// also loads font
vga_hardware_fixup();
// set attributes, char for entire screen
// font should be previously loaded in
// device specific code (vga_hardware_fixup)
memsetw(vidmem, VGA_ATTR_CLR_WHT, 2*1024); //
}
static void video_scroll(void)
{
int i;
@ -30,15 +58,29 @@ void video_tx_byte(unsigned char byte)
{
if (byte == '\n') {
video_line++;
}
else if (byte == '\r') {
video_col = 0;
}
else {
} else if (byte == '\r') {
video_col = 0;
} else if (byte == '\b') {
video_col--;
} else if (byte == '\t') {
video_col += 4;
} else if (byte == '\a') {
//beep
beep(500);
} else {
vidmem[((video_col + (video_line *COLS)) * 2)] = byte;
vidmem[((video_col + (video_line *COLS)) * 2) +1] = 0x07;
vidmem[((video_col + (video_line *COLS)) * 2) +1] = VGA_ATTR_CLR_WHT;
video_col++;
}
if (video_col < 0) {
video_col = 0;
}
if (video_col >= COLS) {
video_line++;
video_col = 0;
@ -47,4 +89,8 @@ void video_tx_byte(unsigned char byte)
video_scroll();
video_line--;
}
// move the cursor
write_crtc((video_col + (video_line *COLS)) >> 8, CRTC_CURSOR_HI);
write_crtc((video_col + (video_line *COLS)) & 0x0ff, CRTC_CURSOR_LO);
}