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 #include "version.h"
  49
  50 #include <stdarg.h>
  51
  52 void shutdown(void)
  53 {
  54     /* We need to gracefully spin down the disk to prevent clicks. */
  55     if (ide_powered())
  56     {
  57         /* Make sure ATA has been initialized. */
  58         ata_init();
  59
  60         /* And put the disk into sleep immediately. */
  61         ata_sleepnow();
  62     }
  63
  64     _backlight_off();
  65
  66     power_off();
  67 }
  68
  69 void main(void)
  70 {
  71     unsigned char* loadbuffer;
  72     int buffer_size;
  73     int rc;
  74     int(*kernel_entry)(void);
  75
  76     system_init();
  77     kernel_init(); /* Need the kernel to sleep */
  78
  79     enable_interrupt(IRQ_FIQ_STATUS);
  80
  81     lcd_init();
  82     backlight_init();
  83     button_init();
  84     font_init();
  85     adc_init();
  86
  87     lcd_setfont(FONT_SYSFIXED);
  88
  89     /* These checks should only run if the bootloader is flashed */
  90     if(GSTATUS3&0x02)
  91     {
  92         GSTATUS3&=0xFFFFFFFD;
  93         if(!(GPGDAT&BUTTON_POWER) && charger_inserted())
  94         {
  95             while(!(GPGDAT&BUTTON_POWER) && charger_inserted())
  96             {
  97                 char msg[20];
  98                 if(charging_state())
  99                 {
 100                     snprintf(msg,sizeof(msg),"Charging");
 101                 }
 102                 else
 103                 {
 104                     snprintf(msg,sizeof(msg),"Charge Complete");
 105                 }
 106                 reset_screen();
 107                 lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
 108                         (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
 109                 lcd_update();
 110
 111 #if defined(HAVE_RTC_ALARM)
 112                 /* Check if the alarm went off while charging */
 113                 if(rtc_check_alarm_flag())
 114                 {
 115                     GSTATUS3=1; /* Normally this is set in crt0.s */
 116                     break;
 117                 }
 118 #endif
 119             }
 120             if(!(GPGDAT&BUTTON_POWER)
 121 #if defined(HAVE_RTC_ALARM)
 122                 && !GSTATUS3
 123 #endif
 124                 )
 125             {
 126                 shutdown();
 127             }
 128         }
 129
 130         if(button_hold())
 131         {
 132             const char msg[] = "HOLD is enabled";
 133             reset_screen();
 134             lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
 135                         (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
 136             lcd_update();
 137
 138             sleep(2*HZ);
 139
 140             shutdown();
 141         }
 142     }
 143
 144     power_init();
 145     usb_init();
 146
 147     /* Enter USB mode without USB thread */
 148     if(usb_detect() == USB_INSERTED)
 149     {
 150         const char msg[] = "Bootloader USB mode";
 151         reset_screen();
 152         lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
 153                     (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
 154         lcd_update();
 155
 156         storage_enable(false);
 157         sleep(HZ/20);
 158         usb_enable(true);
 159
 160         while (usb_detect() == USB_INSERTED)
 161             sleep(HZ);
 162
 163         usb_enable(false);
 164
 165         reset_screen();
 166         lcd_update();
 167     }
 168
 169     reset_screen();
 170
 171     /* Show debug messages if button is pressed */
 172     if(button_read_device()&BUTTON_A)
 173         verbose = true;
 174
 175     printf("Rockbox boot loader");
 176     printf("Version " RBVERSION);
 177
 178     sleep(50); /* ATA seems to error without this pause */
 179
 180     rc = storage_init();
 181     if(rc)
 182     {
 183         reset_screen();
 184         error(EATA, rc, true);
 185     }
 186
 187     disk_init();
 188
 189     rc = disk_mount_all();
 190     if (rc<=0)
 191     {
 192         error(EDISK, rc, true);
 193     }
 194
 195     printf("Loading firmware");
 196
 197     /* Flush out anything pending first */
 198     cpucache_invalidate();
 199
 200     loadbuffer = (unsigned char*) 0x31000000;
 201     buffer_size = (unsigned char*)0x31400000 - loadbuffer;
 202
 203     rc = load_firmware(loadbuffer, BOOTFILE, buffer_size);
 204     if(rc < 0)
 205         error(EBOOTFILE, rc, true);
 206
 207     storage_close();
 208     system_prepare_fw_start();
 209
 210     if (rc == EOK)
 211     {
 212         cpucache_invalidate();
 213         kernel_entry = (void*) loadbuffer;
 214         rc = kernel_entry();
 215     }
 216
 217 #if 0
 218     /* Halt */
 219     while (1)
 220         core_idle();
 221 #else
 222     /* Return and restart */
 223 #endif
 224 }
 225