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