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     kernel_init(); /* Need the kernel to sleep */
  79
  80     enable_interrupt(IRQ_FIQ_STATUS);
  81
  82     lcd_init();
  83     backlight_init();
  84     button_init();
  85     font_init();
  86     adc_init();
  87
  88     lcd_setfont(FONT_SYSFIXED);
  89
  90     /* These checks should only run if the bootloader is flashed */
  91     if(GSTATUS3&0x02)
  92     {
  93         GSTATUS3&=0xFFFFFFFD;
  94         if(!(GPGDAT&BUTTON_POWER) && charger_inserted())
  95         {
  96             while(!(GPGDAT&BUTTON_POWER) && charger_inserted())
  97             {
  98                 char msg[20];
  99                 if(charging_state())
 100                 {
 101                     snprintf(msg,sizeof(msg),"Charging");
 102                 }
 103                 else
 104                 {
 105                     snprintf(msg,sizeof(msg),"Charge Complete");
 106                 }
 107                 reset_screen();
 108                 lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
 109                         (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
 110                 lcd_update();
 111
 112 #if defined(HAVE_RTC_ALARM)
 113                 /* Check if the alarm went off while charging */
 114                 if(rtc_check_alarm_flag())
 115                 {
 116                     GSTATUS3=1; /* Normally this is set in crt0.s */
 117                     break;
 118                 }
 119 #endif
 120             }
 121             if(!(GPGDAT&BUTTON_POWER)
 122 #if defined(HAVE_RTC_ALARM)
 123                 && !GSTATUS3
 124 #endif
 125                 )
 126             {
 127                 shutdown();
 128             }
 129         }
 130
 131         if(button_hold())
 132         {
 133             const char msg[] = "HOLD is enabled";
 134             reset_screen();
 135             lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
 136                         (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
 137             lcd_update();
 138
 139             sleep(2*HZ);
 140
 141             shutdown();
 142         }
 143     }
 144
 145     power_init();
 146     usb_init();
 147
 148     /* Enter USB mode without USB thread */
 149     if(usb_detect() == USB_INSERTED)
 150     {
 151         const char msg[] = "Bootloader USB mode";
 152         reset_screen();
 153         lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
 154                     (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
 155         lcd_update();
 156
 157         storage_enable(false);
 158         sleep(HZ/20);
 159         usb_enable(true);
 160
 161         while (usb_detect() == USB_INSERTED)
 162             sleep(HZ);
 163
 164         usb_enable(false);
 165
 166         reset_screen();
 167         lcd_update();
 168     }
 169
 170     reset_screen();
 171
 172     /* Show debug messages if button is pressed */
 173     if(button_read_device()&BUTTON_A)
 174         verbose = true;
 175
 176     printf("Rockbox boot loader");
 177     printf("Version %s", version);
 178
 179     sleep(50); /* ATA seems to error without this pause */
 180
 181     rc = storage_init();
 182     if(rc)
 183     {
 184         reset_screen();
 185         error(EATA, rc);
 186     }
 187
 188     disk_init();
 189
 190     rc = disk_mount_all();
 191     if (rc<=0)
 192     {
 193         error(EDISK,rc);
 194     }
 195
 196     printf("Loading firmware");
 197
 198     /* Flush out anything pending first */
 199     cpucache_invalidate();
 200
 201     loadbuffer = (unsigned char*) 0x31000000;
 202     buffer_size = (unsigned char*)0x31400000 - loadbuffer;
 203
 204     rc = load_firmware(loadbuffer, BOOTFILE, buffer_size);
 205     if(rc < 0)
 206         error(EBOOTFILE, rc);
 207
 208     storage_close();
 209     system_prepare_fw_start();
 210
 211     if (rc == EOK)
 212     {
 213         cpucache_invalidate();
 214         kernel_entry = (void*) loadbuffer;
 215         rc = kernel_entry();
 216     }
 217
 218 #if 0
 219     /* Halt */
 220     while (1)
 221         core_idle();
 222 #else
 223     /* Return and restart */
 224 #endif
 225 }
 226