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https://github.com/brain-hackers/u-boot-brain
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![wdenk](/assets/img/avatar_default.png)
- remove trailing white space, trailing empty lines, C++ comments, etc. - split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c) * Patches by Kenneth Johansson, 25 Jun 2003: - major rework of command structure (work done mostly by Michal Cendrowski and Joakim Kristiansen)
238 lines
4.7 KiB
C
238 lines
4.7 KiB
C
/*
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* (C) Copyright 2002
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* Daniel Engström, Omicron Ceti AB, daniel@omicron.se
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <pci.h>
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#include <devices.h>
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#include <i8042.h>
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#include <asm/ptrace.h>
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#include <asm/realmode.h>
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#include <asm/io.h>
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#include <asm/pci.h>
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/* basic textmode I/O from linux kernel */
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static char *vidmem = (char *)0xb8000;
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static int vidport;
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static int lines, cols;
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static int orig_x, orig_y;
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static void beep(int dur)
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{
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int i;
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outb_p(3, 0x61);
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for (i=0;i<10*dur;i++) {
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udelay(1000);
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}
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outb_p(0, 0x61);
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}
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static void scroll(void)
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{
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int i;
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memcpy ( vidmem, vidmem + cols * 2, ( lines - 1 ) * cols * 2 );
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for ( i = ( lines - 1 ) * cols * 2; i < lines * cols * 2; i += 2 )
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vidmem[i] = ' ';
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}
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static void __video_putc(const char c, int *x, int *y)
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{
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if (c == '\n') {
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(*x) = 0;
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if ( ++(*y) >= lines ) {
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scroll();
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(*y)--;
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}
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} else if (c == '\b') {
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if ((*x) != 0) {
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--(*x);
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vidmem [ ( (*x) + cols * (*y) ) * 2 ] = ' ';
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}
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} else if (c == '\r') {
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(*x) = 0;
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} else if (c == '\a') {
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beep(3);
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} else if (c == '\t') {
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__video_putc(' ', x, y);
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__video_putc(' ', x, y);
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__video_putc(' ', x, y);
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__video_putc(' ', x, y);
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__video_putc(' ', x, y);
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__video_putc(' ', x, y);
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__video_putc(' ', x, y);
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__video_putc(' ', x, y);
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} else if (c == '\v') {
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switch ((*x) % 8) {
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case 0:
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__video_putc(' ', x, y);
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case 7:
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__video_putc(' ', x, y);
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case 6:
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__video_putc(' ', x, y);
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case 5:
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__video_putc(' ', x, y);
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case 4:
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__video_putc(' ', x, y);
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case 3:
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__video_putc(' ', x, y);
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case 2:
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__video_putc(' ', x, y);
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case 1:
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__video_putc(' ', x, y);
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}
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} else if (c == '\f') {
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int i;
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for (i=0;i<lines*cols*2;i+=2) {
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vidmem[i] = 0;
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}
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(*x) = 0;
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(*y) = 0;
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} else {
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vidmem [ ( (*x) + cols * (*y) ) * 2 ] = c;
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if ( ++(*x) >= cols ) {
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(*x) = 0;
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if ( ++(*y) >= lines ) {
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scroll();
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(*y)--;
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}
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}
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}
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}
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static void video_putc(const char c)
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{
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int x,y,pos;
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x = orig_x;
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y = orig_y;
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__video_putc(c, &x, &y);
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orig_x = x;
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orig_y = y;
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pos = (x + cols * y) * 2; /* Update cursor position */
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outb_p(14, vidport);
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outb_p(0xff & (pos >> 9), vidport+1);
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outb_p(15, vidport);
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outb_p(0xff & (pos >> 1), vidport+1);
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}
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static void video_puts(const char *s)
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{
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int x,y,pos;
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char c;
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x = orig_x;
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y = orig_y;
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while ( ( c = *s++ ) != '\0' ) {
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__video_putc(c, &x, &y);
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}
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orig_x = x;
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orig_y = y;
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pos = (x + cols * y) * 2; /* Update cursor position */
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outb_p(14, vidport);
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outb_p(0xff & (pos >> 9), vidport+1);
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outb_p(15, vidport);
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outb_p(0xff & (pos >> 1), vidport+1);
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}
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int video_init(void)
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{
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u16 pos;
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static device_t vga_dev;
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static device_t kbd_dev;
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vidmem = (char *) 0xb8000;
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vidport = 0x3d4;
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lines = 25;
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cols = 80;
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outb_p(14, vidport);
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pos = inb_p(vidport+1);
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pos <<= 8;
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outb_p(15, vidport);
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pos |= inb_p(vidport+1);
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orig_x = pos%cols;
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orig_y = pos/cols;
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#if 0
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printf("pos %x %d %d\n", pos, orig_x, orig_y);
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#endif
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if (orig_y > lines) {
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orig_x = orig_y =0;
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}
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memset(&vga_dev, 0, sizeof(vga_dev));
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strcpy(vga_dev.name, "vga");
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vga_dev.ext = 0;
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vga_dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_SYSTEM;
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vga_dev.putc = video_putc; /* 'putc' function */
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vga_dev.puts = video_puts; /* 'puts' function */
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vga_dev.tstc = NULL; /* 'tstc' function */
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vga_dev.getc = NULL; /* 'getc' function */
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if (device_register(&vga_dev) == 0) {
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return 1;
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}
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if (i8042_kbd_init()) {
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return 1;
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}
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memset(&kbd_dev, 0, sizeof(kbd_dev));
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strcpy(kbd_dev.name, "kbd");
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kbd_dev.ext = 0;
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kbd_dev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
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kbd_dev.putc = NULL; /* 'putc' function */
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kbd_dev.puts = NULL; /* 'puts' function */
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kbd_dev.tstc = i8042_tstc; /* 'tstc' function */
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kbd_dev.getc = i8042_getc; /* 'getc' function */
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if (device_register(&kbd_dev) == 0) {
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return 1;
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}
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return 0;
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}
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int drv_video_init(void)
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{
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if (video_bios_init()) {
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return 1;
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}
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return video_init();
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}
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