bootloader/telechips.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 by Dave Chapman
  11  *
  12  * Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
  13  *
  14  * All files in this archive are subject to the GNU General Public License.
  15  * See the file COPYING in the source tree root for full license agreement.
  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 <string.h>
  26 #include "cpu.h"
  27 #include "system.h"
  28 #include "lcd.h"
  29 #include "kernel.h"
  30 #include "thread.h"
  31 #include "ata.h"
  32 #include "fat.h"
  33 #include "disk.h"
  34 #include "font.h"
  35 #include "button.h"
  36 #include "adc.h"
  37 #include "adc-target.h"
  38 #include "backlight.h"
  39 #include "backlight-target.h"
  40 #include "panic.h"
  41 #include "power.h"
  42 #include "file.h"
  43 #include "common.h"
  44
  45 #if defined(COWON_D2)
  46 #include "pcf50606.h"
  47 #define LOAD_ADDRESS 0x20000000 /* DRAM_START */
  48 #endif
  49
  50 char version[] = APPSVERSION;
  51
  52 extern int line;
  53
  54 #define MAX_LOAD_SIZE (8*1024*1024) /* Arbitrary, but plenty. */
  55
  56 void show_debug_screen(void)
  57 {
  58     int button;
  59     int power_count = 0;
  60     int count = 0;
  61     bool do_power_off = false;
  62 #ifdef HAVE_BUTTON_DATA
  63     unsigned int data;
  64 #endif
  65
  66     while(!do_power_off) {
  67         line = 0;
  68         printf("Hello World!");
  69
  70 #ifdef HAVE_BUTTON_DATA
  71         button = button_read_device(&data);
  72 #else
  73         button = button_read_device();
  74 #endif
  75
  76         /* Power-off if POWER button has been held for a long time
  77            This loop is currently running at about 100 iterations/second
  78          */
  79         if (button & POWEROFF_BUTTON) {
  80             power_count++;
  81             if (power_count > 200)
  82                do_power_off = true;
  83         } else {
  84             power_count = 0;
  85         }
  86
  87         printf("Btn: 0x%08x",button);
  88
  89         count++;
  90         printf("Count: %d",count);
  91     }
  92
  93     lcd_clear_display();
  94     line = 0;
  95     printf("POWER-OFF");
  96
  97     /* Power-off */
  98     power_off();
  99
 100     printf("(NOT) POWERED OFF");
 101     while (true);
 102 }
 103
 104
 105 void* main(void)
 106 {
 107 #if defined(COWON_D2) && defined(TCCBOOT)
 108     int rc;
 109     unsigned char* loadbuffer = (unsigned char*)LOAD_ADDRESS;
 110 #endif
 111
 112     power_init();
 113     system_init();
 114     lcd_init();
 115
 116     adc_init();
 117     button_init();
 118     backlight_init();
 119
 120     font_init();
 121     lcd_setfont(FONT_SYSFIXED);
 122
 123     _backlight_on();
 124
 125 /* Only load the firmware if TCCBOOT is defined - this ensures SDRAM_START is
 126    available for loading the firmware. Otherwise display the debug screen. */
 127 #if defined(COWON_D2) && defined(TCCBOOT)
 128     printf("Rockbox boot loader");
 129     printf("Version %s", version);
 130
 131     printf("ATA");
 132     rc = ata_init();
 133     if(rc)
 134     {
 135         reset_screen();
 136         error(EATA, rc);
 137     }
 138
 139     printf("mount");
 140     rc = disk_mount_all();
 141     if (rc<=0)
 142     {
 143         error(EDISK,rc);
 144     }
 145
 146     rc = load_firmware(loadbuffer, BOOTFILE, MAX_LOAD_SIZE);
 147
 148     if (rc < 0)
 149     {
 150         error(EBOOTFILE,rc);
 151     }
 152     else if (rc == EOK)
 153     {
 154         int(*kernel_entry)(void);
 155
 156         kernel_entry = (void*) loadbuffer;
 157         rc = kernel_entry();
 158     }
 159 #else
 160     show_debug_screen();
 161 #endif
 162
 163     return 0;
 164 }
 165
 166 /* These functions are present in the firmware library, but we reimplement
 167    them here because the originals do a lot more than we want */
 168 void usb_acknowledge(void)
 169 {
 170 }
 171
 172 void usb_wait_for_disconnect(void)
 173 {
 174 }