bootloader/gigabeat.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2006 by Greg White
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include "config.h"
  22
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25 #include "inttypes.h"
  26 #include "string.h"
  27 #include "cpu.h"
  28 #include "system.h"
  29 #include "lcd.h"
  30 #include "kernel.h"
  31 #include "thread.h"
  32 #include "ata.h"
  33 #include "fat.h"
  34 #include "disk.h"
  35 #include "font.h"
  36 #include "adc.h"
  37 #include "backlight.h"
  38 #include "backlight-target.h"
  39 #include "button.h"
  40 #include "panic.h"
  41 #include "power.h"
  42 #include "file.h"
  43 #include "common.h"
  44 #include "rbunicode.h"
  45 #include "usb.h"
  46 #include "mmu-arm.h"
  47
  48 #include <stdarg.h>
  49
  50 char version[] = APPSVERSION;
  51
  52 void main(void)
  53 {
  54     unsigned char* loadbuffer;
  55     int buffer_size;
  56     int rc;
  57     int(*kernel_entry)(void);
  58
  59     power_init();
  60     system_init();
  61     lcd_init();
  62     backlight_init();
  63     font_init();
  64
  65     lcd_setfont(FONT_SYSFIXED);
  66
  67     usb_init();
  68
  69     /* Enter USB mode without USB thread */
  70     if(usb_detect() == USB_INSERTED)
  71     {
  72         const char msg[] = "Bootloader USB mode";
  73         reset_screen();
  74         lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
  75                     (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
  76         lcd_update();
  77
  78         ata_enable(false);
  79         sleep(HZ/20);
  80         usb_enable(true);
  81
  82         while (usb_detect() == USB_INSERTED)
  83             sleep(HZ);
  84
  85         usb_enable(false);
  86
  87         reset_screen();
  88         lcd_update();
  89     }
  90
  91     kernel_init();
  92     adc_init();
  93     button_init();
  94
  95     /* Show debug messages if button is pressed */
  96     if(button_read_device())
  97         verbose = true;
  98
  99     printf("Rockbox boot loader");
 100     printf("Version %s", version);
 101
 102     sleep(50); /* ATA seems to error without this pause */
 103
 104     rc = ata_init();
 105     if(rc)
 106     {
 107         reset_screen();
 108         error(EATA, rc);
 109     }
 110
 111     disk_init();
 112
 113     rc = disk_mount_all();
 114     if (rc<=0)
 115     {
 116         error(EDISK,rc);
 117     }
 118
 119     printf("Loading firmware");
 120
 121     loadbuffer = (unsigned char*) 0x31000000;
 122     buffer_size = (unsigned char*)0x31400000 - loadbuffer;
 123
 124     rc = load_firmware(loadbuffer, BOOTFILE, buffer_size);
 125     if(rc < 0)
 126         error(EBOOTFILE, rc);
 127
 128     if (rc == EOK)
 129     {
 130         kernel_entry = (void*) loadbuffer;
 131         rc = kernel_entry();
 132     }
 133 }
 134