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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007 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 "inttypes.h"
#include "string.h"
#include "cpu.h"
#include "system.h"
#include "lcd.h"
#include "lcd-remote.h"
#include "../kernel-internal.h"
#include "storage.h"
#include "usb.h"
#include "disk.h"
#include "font.h"
#include "adc.h"
#include "backlight.h"
#include "backlight-target.h"
#include "button.h"
#include "panic.h"
#include "power.h"
#include "powermgmt.h"
#include "file.h"
#include "version.h"
#include "loader_strerror.h"
#include "rb-loader.h"
#include "pcf50606.h"
#include "common.h"
#include <stdarg.h>
/* Maximum allowed firmware image size. 10MB is more than enough */
#define MAX_LOADSIZE (10*1024*1024)
#define DRAM_START 0x31000000
int usb_screen(void)
{
return 0;
}
/* Reset the cookie for the crt0 crash check */
inline void __reset_cookie(void)
{
asm(" move.l #0,%d0");
asm(" move.l %d0,0x10017ffc");
}
void start_firmware(void)
{
adc_close();
asm(" move.w #0x2700,%sr");
__reset_cookie();
asm(" move.l %0,%%d0" :: "i"(DRAM_START));
asm(" movec.l %d0,%vbr");
asm(" move.l %0,%%sp" :: "m"(*(int *)DRAM_START));
asm(" move.l %0,%%a0" :: "m"(*(int *)(DRAM_START+4)));
asm(" jmp (%a0)");
}
void shutdown(void)
{
printf("Shutting down...");
/* We need to gracefully spin down the disk to prevent clicks. */
if (ide_powered())
{
/* Make sure ATA has been initialized. */
storage_init();
/* And put the disk into sleep immediately. */
storage_sleepnow();
}
sleep(HZ*2);
/* Backlight OFF */
_backlight_off();
#ifdef HAVE_REMOTE_LCD
_remote_backlight_off();
#endif
__reset_cookie();
power_off();
}
/* Print the battery voltage (and a warning message). */
void check_battery(void)
{
int battery_voltage, batt_int, batt_frac;
battery_voltage = _battery_voltage();
batt_int = battery_voltage / 1000;
batt_frac = (battery_voltage % 1000) / 10;
printf("Batt: %d.%02dV", batt_int, batt_frac);
if (battery_voltage <= 3500)
{
printf("WARNING! BATTERY LOW!!");
sleep(HZ*2);
}
}
#if defined(IAUDIO_M5) || defined(IAUDIO_X5)
int initial_gpio_read;
#endif
void main(void)
{
int rc;
bool rc_on_button = false;
bool on_button = false;
/* We want to read the buttons as early as possible, before the user
releases the ON button */
#ifdef IAUDIO_M3
or_l(0x80000000, &GPIO_FUNCTION); /* remote Play button */
and_l(~0x80000000, &GPIO_ENABLE);
or_l(0x00000202, &GPIO1_FUNCTION); /* main Hold & Play */
if ((GPIO1_READ & 0x000000002) == 0)
on_button = true;
if ((GPIO_READ & 0x80000000) == 0)
rc_on_button = true;
#elif defined(IAUDIO_M5) || defined(IAUDIO_X5)
or_l(0x0e000000, &GPIO_FUNCTION); /* main Hold & Power, remote Play */
and_l(~0x0e000000, &GPIO_ENABLE);
if ((initial_gpio_read & 0x04000000) == 0)
on_button = true;
if ((initial_gpio_read & 0x02000000) == 0)
rc_on_button = true;
#endif
power_init();
system_init();
kernel_init();
set_cpu_frequency(CPUFREQ_NORMAL);
coldfire_set_pllcr_audio_bits(DEFAULT_PLLCR_AUDIO_BITS);
enable_irq();
lcd_init();
#ifdef HAVE_REMOTE_LCD
lcd_remote_init();
#endif
backlight_init();
font_init();
adc_init();
button_init();
if ((!on_button || button_hold())
&& (!rc_on_button || remote_button_hold())
&& !charger_inserted())
{
/* No need to check for USB connection here, as USB is handled
* in the cowon loader. */
if (on_button || rc_on_button)
printf("Hold switch on");
shutdown();
}
printf("Rockbox boot loader");
printf("Version %s", rbversion);
check_battery();
rc = storage_init();
if(rc)
error(EATA, rc, true);
filesystem_init();
rc = disk_mount_all();
if (rc<=0)
error(EDISK, rc, true);
printf("Loading firmware");
rc = load_firmware((unsigned char *)DRAM_START, BOOTFILE, MAX_LOADSIZE);
if (rc <= EFILE_EMPTY)
error(EBOOTFILE, rc, true);
start_firmware();
}
/* These functions are present in the firmware library, but we reimplement
them here because the originals do a lot more than we want */
void screen_dump(void)
{
}
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