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-arm.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     power_init();
  58     system_init();
  59     lcd_init();
  60     backlight_init();
  61     font_init();
  62
  63     lcd_setfont(FONT_SYSFIXED);
  64
  65     usb_init();
  66
  67     /* Enter USB mode without USB thread */
  68     if(usb_detect() == USB_INSERTED)
  69     {
  70         const char msg[] = "Bootloader USB mode";
  71         reset_screen();
  72         lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
  73                     (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
  74         lcd_update();
  75
  76         ata_enable(false);
  77         sleep(HZ/20);
  78         usb_enable(true);
  79
  80         while (usb_detect() == USB_INSERTED)
  81             sleep(HZ);
  82
  83         usb_enable(false);
  84
  85         reset_screen();
  86         lcd_update();
  87     }
  88
  89     kernel_init();
  90     adc_init();
  91     button_init();
  92
  93     /* Show debug messages if button is pressed */
  94     if(button_read_device())
  95         verbose = true;
  96
  97     printf("Rockbox boot loader");
  98     printf("Version %s", version);
  99
 100     sleep(50); /* ATA seems to error without this pause */
 101
 102     rc = ata_init();
 103     if(rc)
 104     {
 105         reset_screen();
 106         error(EATA, rc);
 107     }
 108
 109     disk_init();
 110
 111     rc = disk_mount_all();
 112     if (rc<=0)
 113     {
 114         error(EDISK,rc);
 115     }
 116
 117     printf("Loading firmware");
 118
 119     loadbuffer = (unsigned char*) 0x31000000;
 120     buffer_size = (unsigned char*)0x31400000 - loadbuffer;
 121
 122     rc = load_firmware(loadbuffer, BOOTFILE, buffer_size);
 123     if(rc < 0)
 124         error(EBOOTFILE, rc);
 125
 126     if (rc == EOK)
 127     {
 128         kernel_entry = (void*) loadbuffer;
 129         rc = kernel_entry();
 130     }
 131 }
 132