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 #include "adc.h"
  35
  36 static void show_splash(int timeout, const char *msg)
  37 {
  38     reset_screen();
  39     lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
  40                 (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
  41     lcd_update();
  42
  43     sleep(timeout);
  44 }
  45
  46 static void usb_mode(void)
  47 {
  48     int button;
  49
  50     /* Init backlight */
  51     backlight_init();
  52
  53     /* Init USB */
  54     usb_init();
  55     usb_start_monitoring();
  56
  57     /* Wait for threads to connect */
  58     show_splash(HZ/2, "Waiting for USB");
  59
  60     while (1)
  61     {
  62         button = button_get_w_tmo(HZ/2);
  63
  64         if (button == SYS_USB_CONNECTED)
  65             break; /* Hit */
  66     }
  67
  68     if (button == SYS_USB_CONNECTED)
  69     {
  70         /* Got the message - wait for disconnect */
  71         show_splash(0, "Bootloader USB mode");
  72
  73         usb_acknowledge(SYS_USB_CONNECTED_ACK);
  74
  75         while (1)
  76         {
  77             button = button_get(true);
  78             if (button == SYS_USB_DISCONNECTED)
  79             {
  80                 usb_acknowledge(SYS_USB_DISCONNECTED_ACK);
  81                 break;
  82             }
  83         }
  84     }
  85
  86     reset_screen();
  87 }
  88
  89 static void boot_of(void)
  90 {
  91     /* Init backlight */
  92     backlight_init();
  93 }
  94
  95 int main(void)
  96 {
  97     int rc;
  98 #ifdef HAVE_TOUCHSCREEN
  99     int dummy;
 100 #endif
 101     void (*kernel_entry)(void);
 102
 103     kernel_init();
 104     lcd_init();
 105     font_init();
 106     lcd_setfont(FONT_SYSFIXED);
 107     button_init();
 108     adc_init();
 109     storage_init();
 110
 111     reset_screen();
 112
 113 #ifdef HAVE_TOUCHSCREEN
 114     rc = button_read_device(&dummy);
 115 #else
 116     rc = button_read_device();
 117 #endif
 118
 119     if(rc & BUTTON_VOL_UP)
 120         usb_mode();
 121     else if(button_hold())
 122         boot_of();
 123     else if(rc)
 124         verbose = true;
 125
 126     /* Only enable backlight when button is pressed */
 127     if(verbose)
 128     {
 129         backlight_init();
 130         printf(MODEL_NAME" Rockbox Bootloader");
 131             printf("Version "APPSVERSION);
 132     }
 133
 134     rc = storage_init();
 135     if(rc)
 136         error(EATA, rc);
 137
 138     rc = disk_mount_all();
 139     if (rc <= 0)
 140         error(EDISK,rc);
 141
 142     printf("Loading firmware");
 143     rc = load_firmware((unsigned char *)CONFIG_SDRAM_START, BOOTFILE, 0x400000);
 144     if(rc < 0)
 145         printf("Error: %s", strerror(rc));
 146
 147     if (rc == EOK)
 148     {
 149         printf("Starting Rockbox...");
 150         adc_close(); /* Disable SADC */
 151         disable_interrupt();
 152         kernel_entry = (void*) CONFIG_SDRAM_START;
 153         kernel_entry();
 154     }
 155
 156     /* Halt */
 157     while (1)
 158         core_idle();
 159
 160     return 0;
 161 }