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  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19 #include "config.h"
  20
  21 #include <stdlib.h>
  22 #include <stdio.h>
  23 #include "inttypes.h"
  24 #include "string.h"
  25 #include "cpu.h"
  26 #include "system.h"
  27 #include "lcd.h"
  28 #include "kernel.h"
  29 #include "thread.h"
  30 #include "ata.h"
  31 #include "fat.h"
  32 #include "disk.h"
  33 #include "font.h"
  34 #include "adc.h"
  35 #include "backlight.h"
  36 #include "backlight-target.h"
  37 #include "button.h"
  38 #include "panic.h"
  39 #include "power.h"
  40 #include "file.h"
  41 #include "common.h"
  42 #include "rbunicode.h"
  43 #include "usb.h"
  44 #include "mmu-meg-fx.h"
  45
  46 #include <stdarg.h>
  47
  48 char version[] = APPSVERSION;
  49
  50 void main(void)
  51 {
  52     unsigned char* loadbuffer;
  53     int buffer_size;
  54     int rc;
  55     int(*kernel_entry)(void);
  56
  57     memory_init();
  58     power_init();
  59     system_init();
  60     lcd_init();
  61     backlight_init();
  62     font_init();
  63
  64     lcd_setfont(FONT_SYSFIXED);
  65
  66     usb_init();
  67
  68     /* Enter USB mode without USB thread */
  69     if(usb_detect())
  70     {
  71         const char msg[] = "Bootloader USB mode";
  72         reset_screen();
  73         lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
  74                     (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
  75         lcd_update();
  76
  77         ata_enable(false);
  78         sleep(HZ/20);
  79         usb_enable(true);
  80
  81         while (usb_detect())
  82             sleep(HZ);
  83
  84         usb_enable(false);
  85
  86         reset_screen();
  87         lcd_update();
  88     }
  89
  90     kernel_init();
  91     adc_init();
  92     button_init();
  93
  94     /* Show debug messages if button is pressed */
  95     if(button_read_device())
  96         verbose = true;
  97
  98     printf("Rockbox boot loader");
  99     printf("Version %s", version);
 100
 101     rc = ata_init();
 102     if(rc)
 103     {
 104         reset_screen();
 105         error(EATA, rc);
 106     }
 107
 108     disk_init();
 109
 110     rc = disk_mount_all();
 111     if (rc<=0)
 112     {
 113         error(EDISK,rc);
 114     }
 115
 116     printf("Loading firmware");
 117
 118     loadbuffer = (unsigned char*) 0x100;
 119     buffer_size = (unsigned char*)0x400000 - loadbuffer;
 120
 121     rc = load_firmware(loadbuffer, BOOTFILE, buffer_size);
 122     if(rc < 0)
 123         error(EBOOTFILE, rc);
 124
 125     if (rc == EOK)
 126     {
 127         kernel_entry = (void*) loadbuffer;
 128         rc = kernel_entry();
 129     }
 130 }
 131