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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007 by Dave Chapman
*
* Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "cpu.h"
#include "system.h"
#include "lcd.h"
#include "../kernel-internal.h"
#include "storage.h"
#include "fat.h"
#include "disk.h"
#include "font.h"
#include "button.h"
#include "adc.h"
#include "adc-target.h"
#include "backlight.h"
#include "backlight-target.h"
#include "panic.h"
#include "power.h"
#include "file.h"
#include "common.h"
#include "rb-loader.h"
#include "loader_strerror.h"
#include "version.h"
/* Show the Rockbox logo - in show_logo.c */
extern void show_logo(void);
/* Address to load main Rockbox image to */
#define LOAD_ADDRESS 0x20000000 /* DRAM_START */
extern int line;
#define MAX_LOAD_SIZE (8*1024*1024) /* Arbitrary, but plenty. */
/* The following function is just test/development code */
void show_debug_screen(void)
{
int button;
int power_count = 0;
int count = 0;
bool do_power_off = false;
lcd_puts_scroll(0,0,"+++ this is a very very long line to test scrolling. ---");
while (!do_power_off) {
line = 1;
button = button_get(false);
/* Power-off if POWER button has been held for a time
This loop is currently running at about 100 iterations/second
*/
if (button & POWEROFF_BUTTON) {
power_count++;
if (power_count > 100)
do_power_off = true;
} else {
power_count = 0;
}
#if 0
if (button & BUTTON_SELECT){
_backlight_off();
}
else{
_backlight_on();
}
#endif
printf("Btn: 0x%08x",button);
#if 0
printf("Tick: %d",current_tick);
printf("GPIOA: 0x%08x",GPIOA);
printf("GPIOB: 0x%08x",GPIOB);
printf("GPIOC: 0x%08x",GPIOC);
printf("GPIOD: 0x%08x",GPIOD);
printf("GPIOE: 0x%08x",GPIOE);
#endif
#if 0
int i;
for (i = 0; i<4; i++)
{
printf("ADC%d: 0x%04x",i,adc_read(i));
}
#endif
count++;
printf("Count: %d",count);
lcd_update();
sleep(HZ/10);
}
lcd_clear_display();
line = 0;
printf("POWER-OFF");
/* Power-off */
power_off();
printf("(NOT) POWERED OFF");
while (true);
}
void* main(void)
{
#ifdef TCCBOOT
int rc;
unsigned char* loadbuffer = (unsigned char*)LOAD_ADDRESS;
#endif
system_init();
power_init();
kernel_init();
enable_irq();
lcd_init();
adc_init();
button_init();
backlight_init();
font_init();
lcd_setfont(FONT_SYSFIXED);
show_logo();
_backlight_on();
/* Only load the firmware if TCCBOOT is defined - this ensures SDRAM_START is
available for loading the firmware. Otherwise display the debug screen. */
#ifdef TCCBOOT
printf("Rockbox boot loader");
printf("Version %s", rbversion);
printf("ATA");
rc = storage_init();
if(rc)
{
reset_screen();
error(EATA, rc, true);
}
printf("mount");
rc = disk_mount_all();
if (rc<=0)
{
error(EDISK,rc, true);
}
rc = load_firmware(loadbuffer, BOOTFILE, MAX_LOAD_SIZE);
if (rc <= EFILE_EMPTY)
{
error(EBOOTFILE,rc, true);
}
else
{
int(*kernel_entry)(void) = (void *) loadbuffer;
disable_irq();
rc = kernel_entry();
}
panicf("Boot failed!");
#else
show_debug_screen();
#endif
return 0;
}
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