bootloader/ondavx747.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2008 by Maurus Cuelenaere
  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
  22 #include "config.h"
  23 #include "jz4740.h"
  24 #include "backlight.h"
  25 #include "font.h"
  26 #include "lcd.h"
  27 #include "usb.h"
  28 #include "system.h"
  29 #include "button.h"
  30 #include "common.h"
  31 #include "storage.h"
  32 #include "disk.h"
  33 #include "string.h"
  34
  35 static void show_splash(int timeout, const char *msg)
  36 {
  37     reset_screen();
  38     lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
  39                 (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
  40     lcd_update();
  41
  42     sleep(timeout);
  43 }
  44
  45 static void usb_mode(void)
  46 {
  47     int button;
  48
  49     /* Init backlight */
  50     backlight_init();
  51
  52     /* Init USB */
  53     usb_init();
  54     usb_start_monitoring();
  55
  56     /* Wait for threads to connect */
  57     show_splash(HZ/2, "Waiting for USB");
  58
  59     while (1)
  60     {
  61         button = button_get_w_tmo(HZ/2);
  62
  63         if (button == SYS_USB_CONNECTED)
  64             break; /* Hit */
  65     }
  66
  67     if (button == SYS_USB_CONNECTED)
  68     {
  69         /* Got the message - wait for disconnect */
  70         show_splash(0, "Bootloader USB mode");
  71
  72         usb_acknowledge(SYS_USB_CONNECTED_ACK);
  73
  74         while (1)
  75         {
  76             button = button_get(true);
  77             if (button == SYS_USB_DISCONNECTED)
  78             {
  79                 usb_acknowledge(SYS_USB_DISCONNECTED_ACK);
  80                 break;
  81             }
  82         }
  83     }
  84
  85     reset_screen();
  86 }
  87
  88 static void boot_of(void)
  89 {
  90     /* Init backlight */
  91     backlight_init();
  92 }
  93
  94 int main(void)
  95 {
  96     int rc, dummy;
  97     void (*kernel_entry)(void);
  98
  99     kernel_init();
 100     lcd_init();
 101     font_init();
 102     lcd_setfont(FONT_SYSFIXED);
 103     button_init();
 104     storage_init();
 105
 106     reset_screen();
 107
 108 #ifdef HAVE_TOUCHSCREEN
 109     rc = button_read_device(&dummy);
 110 #else
 111     rc = button_read_device();
 112 #endif
 113
 114     if(rc & BUTTON_VOL_UP)
 115         usb_mode();
 116     else if(button_hold())
 117         boot_of();
 118     else if(rc)
 119         verbose = true;
 120
 121     /* Only enable backlight when button is pressed */
 122     if(verbose)
 123     {
 124         backlight_init();
 125         printf(MODEL_NAME" Rockbox Bootloader");
 126             printf("Version "APPSVERSION);
 127     }
 128
 129     rc = storage_init();
 130     if(rc)
 131         error(EATA, rc);
 132
 133     rc = disk_mount_all();
 134     if (rc <= 0)
 135         error(EDISK,rc);
 136
 137     printf("Loading firmware");
 138     rc = load_firmware((unsigned char *)CONFIG_SDRAM_START, BOOTFILE, 0x400000);
 139     if(rc < 0)
 140         printf("Error: %s", strerror(rc));
 141
 142     if (rc == EOK)
 143     {
 144         printf("Starting Rockbox...");
 145         disable_interrupt();
 146         kernel_entry = (void*) CONFIG_SDRAM_START;
 147         kernel_entry();
 148     }
 149
 150     /* Halt */
 151     while (1)
 152         core_idle();
 153
 154     return 0;
 155 }