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