git.mutantstargoat.com Git - bootcensus/blob - src/kmain.c

   1 /*
   2 pcboot - bootable PC demo/game kernel
   3 Copyright (C) 2018  John Tsiombikas <nuclear@member.fsf.org>
   4
   5 This program is free software: you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation, either version 3 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY, without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program.  If not, see <https://www.gnu.org/licenses/>.
  17 */
  18 #include <stdio.h>
  19 #include <string.h>
  20 #include <ctype.h>
  21 #include "segm.h"
  22 #include "intr.h"
  23 #include "mem.h"
  24 #include "keyb.h"
  25 #include "timer.h"
  26 #include "contty.h"
  27 #include "video.h"
  28
  29
  30 void logohack(void);
  31
  32 void pcboot_main(void)
  33 {
  34         init_segm();
  35         init_intr();
  36
  37         con_init();
  38         kb_init();
  39
  40         init_mem();
  41
  42         /* initialize the timer */
  43         init_timer();
  44
  45         enable_intr();
  46
  47         printf("PCBoot kernel initialized\n");
  48
  49         for(;;) {
  50                 int c;
  51
  52                 halt_cpu();
  53                 while((c = kb_getkey()) >= 0) {
  54                         switch(c) {
  55                         case KB_F1:
  56                                 set_vga_mode(0x13);
  57                                 logohack();
  58                                 set_vga_mode(3);
  59                                 break;
  60
  61                         case KB_F2:
  62                                 set_video_mode(640, 480, 16);
  63                                 vbetest();
  64                                 set_vga_mode(3);
  65                                 break;
  66                         }
  67                         if(isprint(c)) {
  68                                 printf("key: %d '%c'       \n", c, (char)c);
  69                         } else {
  70                                 printf("key: %d            \n", c);
  71                         }
  72                 }
  73                 if((nticks % 250) == 0) {
  74                         printf("ticks: %ld\r", nticks);
  75                 }
  76         }
  77 }