bootloader/rk27xx.c

   1 #include <stdio.h>
   2 #include <system.h>
   3 #include <inttypes.h>
   4 #include "config.h"
   5 #include "gcc_extensions.h"
   6 #include "lcd.h"
   7 #include "font.h"
   8 #include "backlight.h"
   9 #include "adc.h"
  10 #include "button-target.h"
  11 #include "button.h"
  12 #include "common.h"
  13 #include "storage.h"
  14 #include "disk.h"
  15 #include "panic.h"
  16 #include "power.h"
  17 #include "string.h"
  18 #include "file.h"
  19 #include "crc32-rkw.h"
  20 #include "rkw-loader.h"
  21
  22 #define DRAM_ORIG 0x60000000
  23 #define LOAD_SIZE 0x700000
  24
  25 extern void show_logo( void );
  26
  27 void main(void) NORETURN_ATTR;
  28 void main(void)
  29 {
  30     char filename[MAX_PATH];
  31     unsigned char* loadbuffer;
  32     void(*kernel_entry)(void);
  33     int ret;
  34     enum {rb, of} boot = rb;
  35
  36     power_init();
  37     system_init();
  38     kernel_init();
  39     enable_irq();
  40
  41     adc_init();
  42     lcd_init();
  43     backlight_init();
  44     button_init_device();
  45
  46     font_init();
  47     lcd_setfont(FONT_SYSFIXED);
  48
  49     show_logo();
  50
  51     int btn = button_read_device();
  52
  53     /* if there is some other button pressed
  54      * besides POWER/PLAY we boot into OF
  55      */
  56     if ((btn & ~POWEROFF_BUTTON))
  57         boot = of;
  58
  59     /* if we are woken up by USB insert boot into OF */
  60     if (DEV_INFO & (1<<20))
  61         boot = of;
  62
  63     lcd_clear_display();
  64
  65     ret = storage_init();
  66     if(ret < 0)
  67         error(EATA, ret, true);
  68
  69     while(!disk_init(IF_MV(0)))
  70         panicf("disk_init failed!");
  71
  72     while((ret = disk_mount_all()) <= 0)
  73         error(EDISK, ret, true);
  74
  75     loadbuffer = (unsigned char*)DRAM_ORIG; /* DRAM */
  76
  77     if (boot == rb)
  78         snprintf(filename,sizeof(filename), BOOTDIR "/%s", BOOTFILE);
  79     else if (boot == of)
  80         snprintf(filename,sizeof(filename), BOOTDIR "/%s", "BASE.RKW");
  81
  82     printf("Loading: %s", filename);
  83
  84     ret = load_rkw(loadbuffer, filename, LOAD_SIZE);
  85     if (ret < 0)
  86     {
  87         printf(rkw_strerror(ret));
  88         lcd_update();
  89         sleep(5*HZ);
  90         power_off();
  91     }
  92     else
  93     {
  94         printf(rkw_strerror(0));
  95         sleep(HZ);
  96     }
  97
  98     kernel_entry = (void*) loadbuffer;
  99     commit_discard_idcache();
 100
 101     printf("Executing");
 102     kernel_entry();
 103
 104     printf("ERR: Failed to boot");
 105     sleep(5*HZ);
 106     power_off();
 107
 108     /* hang */
 109     while(1);
 110 }