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 "storage.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 #include "rtc.h"
  48
  49 #include <stdarg.h>
  50
  51 char version[] = APPSVERSION;
  52
  53 void shutdown(void)
  54 {
  55     /* We need to gracefully spin down the disk to prevent clicks. */
  56     if (ide_powered())
  57     {
  58         /* Make sure ATA has been initialized. */
  59         ata_init();
  60
  61         /* And put the disk into sleep immediately. */
  62         ata_sleepnow();
  63     }
  64
  65     _backlight_off();
  66
  67     power_off();
  68 }
  69
  70 void main(void)
  71 {
  72     unsigned char* loadbuffer;
  73     int buffer_size;
  74     int rc;
  75     int(*kernel_entry)(void);
  76
  77     system_init();
  78     lcd_init();
  79     backlight_init();
  80     button_init();
  81     font_init();
  82     kernel_init(); /* Need the kernel to sleep */
  83     adc_init();
  84
  85     lcd_setfont(FONT_SYSFIXED);
  86
  87     /* These checks should only run if the bootloader is flashed */
  88     if(GSTATUS3&0x02)
  89     {
  90         GSTATUS3&=0xFFFFFFFD;
  91         if(!(GPGDAT&BUTTON_POWER) && charger_inserted())
  92         {
  93             while(!(GPGDAT&BUTTON_POWER) && charger_inserted())
  94             {
  95                 char msg[20];
  96                 if(charging_state())
  97                 {
  98                     snprintf(msg,sizeof(msg),"Charging");
  99                 }
 100                 else
 101                 {
 102                     snprintf(msg,sizeof(msg),"Charge Complete");
 103                 }
 104                 reset_screen();
 105                 lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
 106                         (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
 107                 lcd_update();
 108
 109 #if defined(HAVE_RTC_ALARM)
 110                 /* Check if the alarm went off while charging */
 111                 if(rtc_check_alarm_flag())
 112                 {
 113                     GSTATUS3=1; /* Normally this is set in crt0.s */
 114                     break;
 115                 }
 116 #endif
 117             }
 118             if(!(GPGDAT&BUTTON_POWER)
 119 #if defined(HAVE_RTC_ALARM)
 120                 && !GSTATUS3
 121 #endif
 122                 )
 123             {
 124                 shutdown();
 125             }
 126         }
 127
 128         if(button_hold())
 129         {
 130             const char msg[] = "HOLD is enabled";
 131             reset_screen();
 132             lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
 133                         (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
 134             lcd_update();
 135
 136             sleep(2*HZ);
 137
 138             shutdown();
 139         }
 140     }
 141
 142     power_init();
 143     usb_init();
 144
 145     /* Enter USB mode without USB thread */
 146     if(usb_detect() == USB_INSERTED)
 147     {
 148         const char msg[] = "Bootloader USB mode";
 149         reset_screen();
 150         lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
 151                     (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
 152         lcd_update();
 153
 154         storage_enable(false);
 155         sleep(HZ/20);
 156         usb_enable(true);
 157
 158         while (usb_detect() == USB_INSERTED)
 159             sleep(HZ);
 160
 161         usb_enable(false);
 162
 163         reset_screen();
 164         lcd_update();
 165     }
 166
 167     reset_screen();
 168
 169     /* Show debug messages if button is pressed */
 170     if(button_read_device())
 171         verbose = true;
 172
 173     printf("Rockbox boot loader");
 174     printf("Version %s", version);
 175
 176     sleep(50); /* ATA seems to error without this pause */
 177
 178     rc = storage_init();
 179     if(rc)
 180     {
 181         reset_screen();
 182         error(EATA, rc);
 183     }
 184
 185     disk_init();
 186
 187     rc = disk_mount_all();
 188     if (rc<=0)
 189     {
 190         error(EDISK,rc);
 191     }
 192
 193     printf("Loading firmware");
 194
 195     loadbuffer = (unsigned char*) 0x31000000;
 196     buffer_size = (unsigned char*)0x31400000 - loadbuffer;
 197
 198     rc = load_firmware(loadbuffer, BOOTFILE, buffer_size);
 199     if(rc < 0)
 200         error(EBOOTFILE, rc);
 201
 202     if (rc == EOK)
 203     {
 204         kernel_entry = (void*) loadbuffer;
 205         rc = kernel_entry();
 206     }
 207 }
 208