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  * This program is free software; you can redistribute it and/or
  15  * modify it under the terms of the GNU General Public License
  16  * as published by the Free Software Foundation; either version 2
  17  * of the License, or (at your option) any later version.
  18  *
  19  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  20  * KIND, either express or implied.
  21  *
  22  ****************************************************************************/
  23 #include "config.h"
  24
  25 #include <stdlib.h>
  26 #include <stdio.h>
  27 #include <string.h>
  28 #include "cpu.h"
  29 #include "system.h"
  30 #include "lcd.h"
  31 #include "kernel.h"
  32 #include "thread.h"
  33 #include "ata.h"
  34 #include "fat.h"
  35 #include "disk.h"
  36 #include "font.h"
  37 #include "button.h"
  38 #include "adc.h"
  39 #include "adc-target.h"
  40 #include "backlight.h"
  41 #include "backlight-target.h"
  42 #include "panic.h"
  43 #include "power.h"
  44 #include "file.h"
  45 #include "common.h"
  46
  47 #if defined(COWON_D2)
  48 #include "pcf50606.h"
  49 #define LOAD_ADDRESS 0x20000000 /* DRAM_START */
  50 #endif
  51
  52 char version[] = APPSVERSION;
  53
  54 extern int line;
  55
  56 #define MAX_LOAD_SIZE (8*1024*1024) /* Arbitrary, but plenty. */
  57
  58 /* The following function is just test/development code */
  59 #ifdef CPU_TCC77X
  60 void show_debug_screen(void)
  61 {
  62     int button;
  63     int power_count = 0;
  64     int count = 0;
  65     bool do_power_off = false;
  66
  67     /*lcd_puts_scroll(0,0,"this is a very long line to test scrolling");*/
  68     while(!do_power_off) {
  69
  70         line = 1;
  71         button = button_get(false);
  72
  73        /* Power-off if POWER button has been held for a long time
  74            This loop is currently running at about 100 iterations/second
  75          */
  76         if (button & POWEROFF_BUTTON) {
  77             power_count++;
  78             if (power_count > 200)
  79                do_power_off = true;
  80         } else {
  81             power_count = 0;
  82         }
  83
  84         if (button & BUTTON_SELECT){
  85                     _backlight_off();
  86         }
  87         else{
  88             _backlight_on();
  89         }
  90
  91         /*printf("Btn: 0x%08x",button);
  92         printf("Tick: %d",current_tick);
  93         printf("GPIOA: 0x%08x",GPIOA);
  94         printf("GPIOB: 0x%08x",GPIOB);
  95         printf("GPIOC: 0x%08x",GPIOC);
  96         printf("GPIOD: 0x%08x",GPIOD);
  97         printf("GPIOE: 0x%08x",GPIOE);*/
  98
  99 #if 0
 100         int i;
 101         for (i = 1; i<4; i++)
 102         {
 103             printf("ADC%d: 0x%04x",i,adc_read(i));
 104         }
 105 #endif
 106         count++;
 107         printf("Count: %d",count);
 108         sleep(HZ/10);
 109
 110     }
 111
 112     lcd_clear_display();
 113     line = 0;
 114     printf("POWER-OFF");
 115
 116     /* Power-off */
 117     power_off();
 118
 119     printf("(NOT) POWERED OFF");
 120     while (true);
 121
 122 }
 123 #else /* !CPU_TCC77X */
 124 void show_debug_screen(void)
 125 {
 126     int button;
 127     int power_count = 0;
 128     int count = 0;
 129     bool do_power_off = false;
 130 #ifdef HAVE_BUTTON_DATA
 131     unsigned int data;
 132 #endif
 133
 134     while(!do_power_off) {
 135         line = 0;
 136         printf("Hello World!");
 137
 138 #ifdef HAVE_BUTTON_DATA
 139         button = button_read_device(&data);
 140 #else
 141         button = button_read_device();
 142 #endif
 143
 144         /* Power-off if POWER button has been held for a long time
 145            This loop is currently running at about 100 iterations/second
 146          */
 147         if (button & POWEROFF_BUTTON) {
 148             power_count++;
 149             if (power_count > 200)
 150                do_power_off = true;
 151         } else {
 152             power_count = 0;
 153         }
 154
 155         printf("Btn: 0x%08x",button);
 156
 157         count++;
 158         printf("Count: %d",count);
 159     }
 160
 161     lcd_clear_display();
 162     line = 0;
 163     printf("POWER-OFF");
 164
 165     /* Power-off */
 166     power_off();
 167
 168     printf("(NOT) POWERED OFF");
 169     while (true);
 170 }
 171 #endif
 172
 173 void* main(void)
 174 {
 175 #if defined(COWON_D2) && defined(TCCBOOT)
 176     int rc;
 177     unsigned char* loadbuffer = (unsigned char*)LOAD_ADDRESS;
 178 #endif
 179
 180     power_init();
 181     system_init();
 182 #ifndef COWON_D2
 183     /* The D2 doesn't enable threading or interrupts */
 184     kernel_init();
 185     enable_irq();
 186 #endif
 187     lcd_init();
 188
 189     adc_init();
 190     button_init();
 191     backlight_init();
 192
 193     font_init();
 194     lcd_setfont(FONT_SYSFIXED);
 195
 196     _backlight_on();
 197
 198 /* Only load the firmware if TCCBOOT is defined - this ensures SDRAM_START is
 199    available for loading the firmware. Otherwise display the debug screen. */
 200 #if defined(COWON_D2) && defined(TCCBOOT)
 201     printf("Rockbox boot loader");
 202     printf("Version %s", version);
 203
 204     printf("ATA");
 205     rc = ata_init();
 206     if(rc)
 207     {
 208         reset_screen();
 209         error(EATA, rc);
 210     }
 211
 212     printf("mount");
 213     rc = disk_mount_all();
 214     if (rc<=0)
 215     {
 216         error(EDISK,rc);
 217     }
 218
 219     rc = load_firmware(loadbuffer, BOOTFILE, MAX_LOAD_SIZE);
 220
 221     if (rc < 0)
 222     {
 223         error(EBOOTFILE,rc);
 224     }
 225     else if (rc == EOK)
 226     {
 227         int(*kernel_entry)(void);
 228
 229         kernel_entry = (void*) loadbuffer;
 230         rc = kernel_entry();
 231     }
 232 #else
 233     show_debug_screen();
 234 #endif
 235
 236     return 0;
 237 }
 238
 239 /* These functions are present in the firmware library, but we reimplement
 240    them here because the originals do a lot more than we want */
 241 void usb_acknowledge(void)
 242 {
 243 }
 244
 245 void usb_wait_for_disconnect(void)
 246 {
 247 }