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 #include "ssp-imx233.h"
  41
  42 #include "usb.h"
  43
  44 int show_logo(void);
  45
  46 void main(void) NORETURN_ATTR;
  47 void main(void)
  48 {
  49     unsigned char* loadbuffer;
  50     int buffer_size;
  51     void(*kernel_entry)(void);
  52     int ret;
  53
  54     system_init();
  55     kernel_init();
  56
  57     enable_irq();
  58
  59     lcd_init();
  60     show_logo();
  61
  62     backlight_init();
  63
  64     button_init_device();
  65
  66     //button_debug_screen();
  67
  68     #if 0
  69     usb_init();
  70     usb_start_monitoring();
  71     extern int usb_status;
  72     usb_status = USB_INSERTED;
  73     usb_status_event(USB_POWERED);
  74
  75     printf("USB: Connecting");
  76
  77     while(1)
  78     {
  79         int button = button_get_w_tmo(HZ/25);
  80
  81         if(button == SYS_USB_CONNECTED)
  82             break; /* Hit */
  83         if(button_read_device() & BUTTON_POWER)
  84             power_off();
  85         yield();
  86     }
  87
  88     printf("USB: Connected");
  89     while(1)
  90     {
  91         int button = button_get_w_tmo(HZ/25);
  92
  93         if(button_read_device() & BUTTON_POWER)
  94             power_off();
  95         yield();
  96     }
  97     #endif
  98
  99     ret = storage_init();
 100     if(ret < 0)
 101         error(EATA, ret, true);
 102
 103     while(!disk_init(IF_MV(0)))
 104         panicf("disk_init failed!");
 105
 106     while((ret = disk_mount_all()) <= 0)
 107     {
 108         error(EDISK, ret, true);
 109     }
 110
 111     printf("Loading firmware");
 112
 113     loadbuffer = (unsigned char*)DRAM_ORIG; /* DRAM */
 114     buffer_size = (int)(loadbuffer + DRAM_SIZE - TTB_SIZE);
 115
 116     while((ret = load_firmware(loadbuffer, BOOTFILE, buffer_size)) < 0)
 117     {
 118         error(EBOOTFILE, ret, true);
 119     }
 120
 121     kernel_entry = (void*) loadbuffer;
 122     //cpucache_invalidate();
 123     printf("Executing");
 124     kernel_entry();
 125     printf("ERR: Failed to boot");
 126
 127     /* never returns */
 128     while(1) ;
 129 }