mirror of
https://github.com/ipxe/ipxe
synced 2025-12-07 18:00:28 +03:00
8406115834
Access to the gpxe.org and etherboot.org domains and associated resources has been revoked by the registrant of the domain. Work around this problem by renaming project from gPXE to iPXE, and updating URLs to match. Also update README, LOG and COPYRIGHTS to remove obsolete information. Signed-off-by: Michael Brown <mcb30@ipxe.org>
105 lines
1.8 KiB
C
105 lines
1.8 KiB
C
/*
|
|
*
|
|
* modified from linuxbios code
|
|
* by Cai Qiang <rimy2000@hotmail.com>
|
|
*
|
|
*/
|
|
|
|
#include "stddef.h"
|
|
#include "string.h"
|
|
#include <ipxe/io.h>
|
|
#include "console.h"
|
|
#include <ipxe/init.h>
|
|
#include "vga.h"
|
|
|
|
struct console_driver vga_console;
|
|
|
|
static char *vidmem; /* The video buffer */
|
|
static int video_line, video_col;
|
|
|
|
#define VIDBUFFER 0xB8000
|
|
|
|
static void memsetw(void *s, int c, unsigned int n)
|
|
{
|
|
unsigned int i;
|
|
u16 *ss = (u16 *) s;
|
|
|
|
for (i = 0; i < n; i++) {
|
|
ss[i] = ( u16 ) c;
|
|
}
|
|
}
|
|
|
|
static void video_init(void)
|
|
{
|
|
static int inited=0;
|
|
|
|
vidmem = (char *)phys_to_virt(VIDBUFFER);
|
|
|
|
if (!inited) {
|
|
video_line = 0;
|
|
video_col = 0;
|
|
|
|
memsetw(vidmem, VGA_ATTR_CLR_WHT, 2*1024); //
|
|
|
|
inited=1;
|
|
}
|
|
}
|
|
|
|
static void video_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 vga_putc(int byte)
|
|
{
|
|
if (byte == '\n') {
|
|
video_line++;
|
|
video_col = 0;
|
|
|
|
} 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] = VGA_ATTR_CLR_WHT;
|
|
video_col++;
|
|
}
|
|
if (video_col < 0) {
|
|
video_col = 0;
|
|
}
|
|
if (video_col >= COLS) {
|
|
video_line++;
|
|
video_col = 0;
|
|
}
|
|
if (video_line >= LINES) {
|
|
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);
|
|
}
|
|
|
|
struct console_driver vga_console __console_driver = {
|
|
.putchar = vga_putc,
|
|
.disabled = 1,
|
|
};
|
|
|
|
struct init_fn video_init_fn __init_fn ( INIT_EARLY ) = {
|
|
.initialise = video_init,
|
|
};
|