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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 "gcc_extensions.h"
#include "lcd.h"
#ifdef USE_ROCKBOX_USB
#include "usb.h"
#include "sysfont.h"
#endif /* USE_ROCKBOX_USB */
#include "backlight.h"
#include "button-target.h"
#include "common.h"
#include "storage.h"
#include "disk.h"
#include "panic.h"
#include "power.h"
void show_logo(void);
#ifdef USE_ROCKBOX_USB
static void usb_mode(void)
{
if(usb_detect() != USB_INSERTED)
{
static const char msg[] = "Plug USB cable";
reset_screen();
lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * sizeof(msg))) / 2,
(LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
lcd_update();
/* wait until USB is plugged */
while(usb_detect() != USB_INSERTED) ;
}
static const char msg[] = "Bootloader USB mode";
reset_screen();
lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * sizeof(msg))) / 2,
(LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
lcd_update();
while(usb_detect() == USB_INSERTED)
sleep(HZ);
reset_screen();
lcd_update();
}
#endif /* USE_ROCKBOX_USB */
void main(void) NORETURN_ATTR;
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) && !defined(SANSA_CLIPV2) \
&& !defined(SANSA_CLIPPLUS) && !defined(SANSA_CLIPZIP)
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, true);
#ifdef USE_ROCKBOX_USB
usb_init();
usb_start_monitoring();
/* Enter USB mode if USB is plugged and SELECT button is pressed */
if(btn & BUTTON_SELECT && usb_detect() == USB_INSERTED)
usb_mode();
#endif /* USE_ROCKBOX_USB */
while(!disk_init(IF_MV(0)))
#ifdef USE_ROCKBOX_USB
usb_mode();
#else
panicf("disk_init failed!");
#endif
while((ret = disk_mount_all()) <= 0)
{
#ifdef USE_ROCKBOX_USB
error(EDISK, ret, false);
usb_mode();
#else
error(EDISK, ret, true);
#endif
}
printf("Loading firmware");
loadbuffer = (unsigned char*)DRAM_ORIG; /* DRAM */
buffer_size = (int)(loadbuffer + (DRAM_SIZE) - TTB_SIZE);
while((ret = load_firmware(loadbuffer, BOOTFILE, buffer_size)) < 0)
{
#ifdef USE_ROCKBOX_USB
error(EBOOTFILE, ret, false);
usb_mode();
#else
error(EBOOTFILE, ret, true);
#endif
}
kernel_entry = (void*) loadbuffer;
commit_discard_idcache();
printf("Executing");
kernel_entry();
printf("ERR: Failed to boot");
/* never returns */
while(1) ;
}
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