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