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 "backlight-target.h"
  26 #include "font.h"
  27 #include "lcd.h"
  28 #include "usb.h"
  29 #include "system.h"
  30 #include "button.h"
  31 #include "common.h"
  32 #include "storage.h"
  33 #include "disk.h"
  34 #include "string.h"
  35 #include "adc.h"
  36
  37 static void show_splash(int timeout, const char *msg)
  38 {
  39     reset_screen();
  40     lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
  41                 (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
  42     lcd_update();
  43
  44     sleep(timeout);
  45 }
  46
  47 static void usb_mode(void)
  48 {
  49     int button;
  50
  51     /* Init USB */
  52     usb_init();
  53     usb_start_monitoring();
  54
  55     /* Wait for threads to connect */
  56     show_splash(HZ/2, "Waiting for USB");
  57
  58     while (1)
  59     {
  60         button = button_get_w_tmo(HZ/2);
  61
  62         if (button == SYS_USB_CONNECTED)
  63             break; /* Hit */
  64     }
  65
  66     if (button == SYS_USB_CONNECTED)
  67     {
  68         /* Got the message - wait for disconnect */
  69         show_splash(0, "Bootloader USB mode");
  70
  71         usb_acknowledge(SYS_USB_CONNECTED_ACK);
  72
  73         while (1)
  74         {
  75             button = button_get(true);
  76             if (button == SYS_USB_DISCONNECTED)
  77             {
  78                 usb_acknowledge(SYS_USB_DISCONNECTED_ACK);
  79                 break;
  80             }
  81         }
  82     }
  83
  84     reset_screen();
  85 }
  86
  87 static void boot_of(void)
  88 {
  89     /* Do nothing atm */
  90 }
  91
  92 int main(void)
  93 {
  94     int rc;
  95 #ifdef HAVE_TOUCHSCREEN
  96     int dummy;
  97 #endif
  98     void (*kernel_entry)(void);
  99
 100     kernel_init();
 101     lcd_init();
 102     font_init();
 103     lcd_setfont(FONT_SYSFIXED);
 104     button_init();
 105     adc_init();
 106     backlight_init();
 107
 108     reset_screen();
 109     printf(MODEL_NAME" Rockbox Bootloader");
 110     printf("Version "APPSVERSION);
 111
 112     rc = storage_init();
 113     if(rc)
 114         error(EATA, rc);
 115
 116 #ifdef HAVE_TOUCHSCREEN
 117     rc = button_read_device(&dummy);
 118 #else
 119     rc = button_read_device();
 120 #endif
 121
 122     if(rc & BUTTON_VOL_UP)
 123         usb_mode();
 124     else if(button_hold())
 125         boot_of();
 126
 127     rc = disk_mount_all();
 128     if (rc <= 0)
 129         error(EDISK,rc);
 130
 131     printf("Loading firmware");
 132     rc = load_firmware((unsigned char *)CONFIG_SDRAM_START, BOOTFILE, 0x400000);
 133     if(rc < 0)
 134         printf("Error: %s", strerror(rc));
 135
 136     if (rc == EOK)
 137     {
 138         printf("Starting Rockbox...");
 139         adc_close(); /* Disable SADC */
 140         _backlight_off(); /* Force backlight off to prevent LCD 'flicker' */
 141
 142         disable_interrupt();
 143         kernel_entry = (void*) CONFIG_SDRAM_START;
 144         kernel_entry();
 145     }
 146
 147     /* Halt */
 148     while (1)
 149         core_idle();
 150
 151     return 0;
 152 }