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) || defined(IAUDIO_7) && defined(TCCBOOT)
  48 # define REAL_BOOT
  49 #endif
  50
  51 #ifdef REAL_BOOT
  52 # if defined(COWON_D2) || defined(IAUDIO_7)
  53 #  include "pcf50606.h"
  54 # endif
  55 # define LOAD_ADDRESS 0x20000000 /* DRAM_START */
  56 #endif
  57
  58 char version[] = APPSVERSION;
  59
  60 extern int line;
  61
  62 #define MAX_LOAD_SIZE (8*1024*1024) /* Arbitrary, but plenty. */
  63
  64 /* The following function is just test/development code */
  65 #ifdef CPU_TCC77X
  66 void show_debug_screen(void)
  67 {
  68     int button;
  69     int power_count = 0;
  70     int count = 0;
  71     bool do_power_off = false;
  72
  73     /*lcd_puts_scroll(0,0,"this is a very long line to test scrolling");*/
  74     while(!do_power_off) {
  75
  76         line = 1;
  77         button = button_get(false);
  78
  79        /* Power-off if POWER button has been held for a time
  80            This loop is currently running at about 100 iterations/second
  81          */
  82         if (button & POWEROFF_BUTTON) {
  83             power_count++;
  84             if (power_count > 100)
  85                do_power_off = true;
  86         } else {
  87             power_count = 0;
  88         }
  89 #ifdef BUTTON_SELECT
  90         if (button & BUTTON_SELECT){
  91             _backlight_off();
  92         }
  93         else{
  94             _backlight_on();
  95         }
  96 #endif
  97         /*printf("Btn: 0x%08x",button);
  98         printf("Tick: %d",current_tick);
  99         printf("GPIOA: 0x%08x",GPIOA);
 100         printf("GPIOB: 0x%08x",GPIOB);
 101         printf("GPIOC: 0x%08x",GPIOC);
 102         printf("GPIOD: 0x%08x",GPIOD);
 103         printf("GPIOE: 0x%08x",GPIOE);*/
 104
 105 #if 0
 106         int i;
 107         for (i = 1; i<4; i++)
 108         {
 109             printf("ADC%d: 0x%04x",i,adc_read(i));
 110         }
 111 #endif
 112         count++;
 113         printf("Count: %d",count);
 114         sleep(HZ/10);
 115
 116     }
 117
 118     lcd_clear_display();
 119     line = 0;
 120     printf("POWER-OFF");
 121
 122     /* Power-off */
 123     power_off();
 124
 125     printf("(NOT) POWERED OFF");
 126     while (true);
 127
 128 }
 129 #else /* !CPU_TCC77X */
 130 void show_debug_screen(void)
 131 {
 132     int button;
 133     int power_count = 0;
 134     int count = 0;
 135     bool do_power_off = false;
 136 #ifdef HAVE_BUTTON_DATA
 137     unsigned int data;
 138 #endif
 139
 140     while(!do_power_off) {
 141         line = 0;
 142         printf("Hello World!");
 143
 144 #ifdef HAVE_BUTTON_DATA
 145         button = button_read_device(&data);
 146 #else
 147         button = button_read_device();
 148 #endif
 149
 150         /* Power-off if POWER button has been held for a long time
 151            This loop is currently running at about 100 iterations/second
 152          */
 153         if (button & POWEROFF_BUTTON) {
 154             power_count++;
 155             if (power_count > 200)
 156                do_power_off = true;
 157         } else {
 158             power_count = 0;
 159         }
 160
 161         printf("Btn: 0x%08x",button);
 162
 163         count++;
 164         printf("Count: %d",count);
 165     }
 166
 167     lcd_clear_display();
 168     line = 0;
 169     printf("POWER-OFF");
 170
 171     /* Power-off */
 172     power_off();
 173
 174     printf("(NOT) POWERED OFF");
 175     while (true);
 176 }
 177 #endif
 178
 179 void* main(void)
 180 {
 181 #ifdef REAL_BOOT
 182     int rc;
 183     unsigned char* loadbuffer = (unsigned char*)LOAD_ADDRESS;
 184 #endif
 185
 186     system_init();
 187     power_init();
 188 #ifndef COWON_D2
 189     /* The D2 doesn't enable threading or interrupts */
 190     kernel_init();
 191     enable_irq();
 192 #endif
 193     lcd_init();
 194
 195     adc_init();
 196     button_init();
 197     backlight_init();
 198
 199     font_init();
 200     lcd_setfont(FONT_SYSFIXED);
 201
 202     _backlight_on();
 203
 204 /* Only load the firmware if TCCBOOT is defined - this ensures SDRAM_START is
 205    available for loading the firmware. Otherwise display the debug screen. */
 206 #ifdef REAL_BOOT
 207     printf("Rockbox boot loader");
 208     printf("Version %s", version);
 209
 210     printf("ATA");
 211     rc = ata_init();
 212     if(rc)
 213     {
 214         reset_screen();
 215         error(EATA, rc);
 216     }
 217
 218     printf("mount");
 219     rc = disk_mount_all();
 220     if (rc<=0)
 221     {
 222         error(EDISK,rc);
 223     }
 224
 225     rc = load_firmware(loadbuffer, BOOTFILE, MAX_LOAD_SIZE);
 226
 227     if (rc < 0)
 228     {
 229         error(EBOOTFILE,rc);
 230     }
 231     else if (rc == EOK)
 232     {
 233         int(*kernel_entry)(void);
 234
 235         kernel_entry = (void*) loadbuffer;
 236         rc = kernel_entry();
 237     }
 238 #else
 239     show_debug_screen();
 240 #endif
 241
 242     return 0;
 243 }
 244
 245 /* These functions are present in the firmware library, but we reimplement
 246    them here because the originals do a lot more than we want */
 247 void usb_acknowledge(void)
 248 {
 249 }
 250
 251 void usb_wait_for_disconnect(void)
 252 {
 253 }