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