bootloader/imx233.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2011 by amaury Pouly
  11  *
  12  * Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
  13  * and the ipodlinux bootloader by Daniel Palffy and Bernard Leach
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  21  * KIND, either express or implied.
  22  *
  23  ****************************************************************************/
  24
  25 #include <stdio.h>
  26 #include <system.h>
  27 #include <inttypes.h>
  28 #include "config.h"
  29 #include "gcc_extensions.h"
  30 #include "lcd.h"
  31 #include "backlight.h"
  32 #include "button-target.h"
  33 #include "common.h"
  34 #include "storage.h"
  35 #include "disk.h"
  36 #include "panic.h"
  37 #include "power.h"
  38 #include "pinctrl-imx233.h"
  39 #include "system-target.h"
  40
  41 int show_logo(void);
  42
  43 void main(void) NORETURN_ATTR;
  44 void main(void)
  45 {
  46     unsigned char* loadbuffer;
  47     int buffer_size;
  48     void(*kernel_entry)(void);
  49     int ret;
  50
  51     system_init();
  52     kernel_init();
  53
  54     enable_irq();
  55
  56     lcd_init();
  57     show_logo();
  58
  59     backlight_init();
  60
  61     button_init_device();
  62
  63     button_debug_screen();
  64
  65     power_off();
  66
  67     ret = storage_init();
  68     if(ret < 0)
  69         error(EATA, ret, true);
  70
  71     while(!disk_init(IF_MV(0)))
  72         panicf("disk_init failed!");
  73
  74     while((ret = disk_mount_all()) <= 0)
  75     {
  76         error(EDISK, ret, true);
  77     }
  78
  79     printf("Loading firmware");
  80
  81     loadbuffer = (unsigned char*)DRAM_ORIG; /* DRAM */
  82     buffer_size = (int)(loadbuffer + DRAM_SIZE - TTB_SIZE);
  83
  84     while((ret = load_firmware(loadbuffer, BOOTFILE, buffer_size)) < 0)
  85     {
  86         error(EBOOTFILE, ret, true);
  87     }
  88
  89     kernel_entry = (void*) loadbuffer;
  90     //cpucache_invalidate();
  91     printf("Executing");
  92     kernel_entry();
  93     printf("ERR: Failed to boot");
  94
  95     /* never returns */
  96     while(1) ;
  97 }