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

   1 #include "config.h"
   2
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include <stdint.h>
   6 #include <ctype.h>
   7 #include "asm.h"
   8 #include "rpi.h"
   9 #include "contty.h"
  10 #include "serial.h"
  11 #include "timer.h"
  12 #include "video.h"
  13 #include "intr.h"
  14
  15 void dbgled(int x);
  16
  17 void reboot(void);
  18
  19 static void cmdrun(char *cmd);
  20
  21 int main(void)
  22 {
  23         int lastnl = 0;
  24         static char cmdbuf[256];
  25         static int cmdend;
  26
  27         unsigned int cpsr;
  28         asm volatile("mrs %0, cpsr" : "=r"(cpsr));
  29         printf("CPSR: %x (mode: %x)\n", cpsr, cpsr & 0x1f);
  30
  31         rpi_init();
  32         /*init_serial(115200); done in rpi_init now for early debugging */
  33         con_init();
  34
  35         printf("Detected raspberry pi %d, I/O base: %x\n", rpi_model, rpi_iobase);
  36         printf("Main RAM base: %x, size: %u bytes\n", rpi_mem_base, rpi_mem_size);
  37         printf("Video RAM base: %x, size: %u bytes\n", rpi_vmem_base, rpi_vmem_size);
  38
  39         video_init();
  40
  41         timer_init();
  42         intr_init();
  43         enable_intr();
  44
  45         printf("Going interactive\n");
  46
  47         for(;;) {
  48                 while(ser_pending()) {
  49                         int c = getchar();
  50
  51                         switch(c) {
  52                         case '\r':
  53                         case '\n':
  54                                 if(!lastnl) {
  55                                         printf("\r\n");
  56                                         cmdbuf[cmdend] = 0;
  57                                         cmdend = 0;
  58                                         cmdrun(cmdbuf);
  59                                 }
  60                                 lastnl = 1;
  61                                 break;
  62
  63                         case -1:
  64                                 lastnl = 0;
  65                                 printf("error!\n");
  66                                 break;
  67
  68                         default:
  69                                 lastnl = 0;
  70                                 putchar(c);
  71                                 if(cmdend < sizeof cmdbuf) {
  72                                         cmdbuf[cmdend++] = c;
  73                                 }
  74                         }
  75                 }
  76
  77                 /*video_update(1);*/
  78         }
  79
  80         return 0;
  81 }
  82
  83 void reboot(void)
  84 {
  85         printf("Rebooting ...\n");
  86         rpi_reboot();
  87 }
  88
  89 static void cmdrun(char *cmd)
  90 {
  91         static int cur_x, cur_y;
  92         char *ptr, *args;
  93
  94         while(*cmd && isspace(*cmd)) cmd++;
  95         ptr = cmd;
  96         while(*ptr && !isspace(*ptr)) ptr++;
  97         *ptr = 0;
  98         args = ptr + 1;
  99
 100         if(strcmp(cmd, "reboot") == 0) {
 101                 reboot();
 102
 103         } else if(strcmp(cmd, "down") == 0) {
 104                 printf("scroll down\n");
 105                 cur_y += 10;
 106                 video_scroll(cur_x, cur_y);
 107
 108         } else if(strcmp(cmd, "up") == 0) {
 109                 printf("scroll up\n");
 110                 cur_y -= 10;
 111                 video_scroll(cur_x, cur_y);
 112
 113         } else if(strcmp(cmd, "ticks") == 0) {
 114                 printf("%lu\n", num_ticks);
 115
 116         } else if(strcmp(cmd, "help") == 0) {
 117                 printf("help not implemented yet\n");
 118         } else if(strcmp(cmd, "ver") == 0) {
 119                 printf("rpikern version 0.0\n");
 120         } else {
 121                 printf("Unknown command: %s\n", cmd);
 122         }
 123 }