git.mutantstargoat.com Git - rpikern/blob - src/main.c

   1 #include "config.h"
   2
   3 #include <string.h>
   4 #include <stdint.h>
   5 #include <ctype.h>
   6 #include "asm.h"
   7 #include "serial.h"
   8 #include "video.h"
   9
  10 void dbgled(int x);
  11 void exit(int x);
  12
  13 static void cmdrun(char *cmd);
  14
  15 int main(void)
  16 {
  17         int lastnl = 0;
  18         static char cmdbuf[256];
  19         static int cmdend;
  20
  21         init_serial(115200);
  22         ser_printstr("Starting rpikern\n");
  23
  24         video_init();
  25
  26         ser_printstr("Going interactive\n");
  27         for(;;) {
  28                 int c = ser_getchar();
  29
  30                 switch(c) {
  31                 case '\r':
  32                 case '\n':
  33                         if(!lastnl) {
  34                                 ser_printstr("\r\n");
  35                                 cmdbuf[cmdend] = 0;
  36                                 cmdend = 0;
  37                                 cmdrun(cmdbuf);
  38                         }
  39                         lastnl = 1;
  40                         break;
  41
  42                 case -1:
  43                         lastnl = 0;
  44                         ser_printstr("error!\n");
  45                         break;
  46
  47                 default:
  48                         lastnl = 0;
  49                         ser_putchar(c);
  50                         if(cmdend < sizeof cmdbuf) {
  51                                 cmdbuf[cmdend++] = c;
  52                         }
  53                 }
  54         }
  55
  56         return 0;
  57 }
  58
  59 void panic(void)
  60 {
  61         ser_printstr("PANIC!\n");
  62         exit(0);
  63 }
  64
  65 static void cmdrun(char *cmd)
  66 {
  67         char *ptr, *args;
  68
  69         while(*cmd && isspace(*cmd)) cmd++;
  70         ptr = cmd;
  71         while(*ptr && !isspace(*ptr)) ptr++;
  72         *ptr = 0;
  73         args = ptr + 1;
  74
  75         if(strcmp(cmd, "help") == 0) {
  76                 ser_printstr("help not implemented yet\n");
  77         } else if(strcmp(cmd, "ver") == 0) {
  78                 ser_printstr("rpikern version 0.0\n");
  79         } else {
  80                 ser_printstr("Unknown command: ");
  81                 ser_printstr(cmd);
  82                 ser_printstr("\n");
  83         }
  84 }