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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 by Rafaël Carré
*
* Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
* and the ipodlinux bootloader by Daniel Palffy and Bernard Leach
*
* 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 <stdio.h>
#include <system.h>
#include <inttypes.h>
#include "config.h"
#include "lcd.h"
#include "backlight.h"
#include "button-target.h"
#include "common.h"
#include "storage.h"
#include "disk.h"
#include "panic.h"
#include "power.h"
int show_logo(void);
void main(void) __attribute__((naked, noreturn));
void main(void)
{
unsigned char* loadbuffer;
int buffer_size;
void(*kernel_entry)(void);
int ret;
system_init();
kernel_init();
enable_irq();
lcd_init();
show_logo();
backlight_init();
button_init_device();
int btn = button_read_device();
#if !defined(SANSA_FUZE) && !defined(SANSA_CLIP)
if (button_hold())
{
verbose = true;
lcd_clear_display();
printf("Hold switch on");
printf("Shutting down...");
sleep(HZ);
power_off();
}
#endif
/* Enable bootloader messages if any button is pressed */
if (btn)
{
lcd_clear_display();
verbose = true;
}
ret = storage_init();
if(ret < 0)
error(EATA,ret);
if(!disk_init(IF_MV(0)))
panicf("disk_init failed!");
ret = disk_mount_all();
if(ret <= 0)
error(EDISK, ret);
printf("Loading firmware");
loadbuffer = (unsigned char*)DRAM_ORIG; /* DRAM */
buffer_size = (int)(loadbuffer + (DRAM_SIZE) - TTB_SIZE);
ret = load_firmware(loadbuffer, BOOTFILE, buffer_size);
if(ret < 0)
error(EBOOTFILE, ret);
disable_irq(); /* disable irq until we have copied the new vectors */
if (ret == EOK)
{
kernel_entry = (void*) loadbuffer;
printf("Executing");
kernel_entry();
printf("ERR: Failed to boot");
}
/* never returns */
while(1) ;
}
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