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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2011 by Amaury Pouly
*
* 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 "../kernel-internal.h"
#include "gcc_extensions.h"
#include "lcd.h"
#include "backlight.h"
#include "button-target.h"
#include "common.h"
#include "rb-loader.h"
#include "loader_strerror.h"
#include "storage.h"
#include "file_internal.h"
#include "disk.h"
#include "panic.h"
#include "power.h"
#include "power-imx233.h"
#include "system-target.h"
#include "fmradio_i2c.h"
#include "version.h"
#include "powermgmt-imx233.h"
#include "partitions-imx233.h"
#include "backlight-target.h"
#include "adc.h"
#include "usb.h"
extern char loadaddress[];
extern char loadaddressend[];
#define MSG(width, short, long) (LCD_WIDTH < (width) ? short : long)
#ifdef HAVE_BOOTLOADER_USB_MODE
static void usb_mode(int connect_timeout)
{
int button;
usb_init();
usb_start_monitoring();
/* Wait for threads to connect or cable is pulled */
printf("USB: Connecting");
long end_tick = current_tick + connect_timeout;
while(1)
{
button = button_get_w_tmo(HZ/10);
if(button == SYS_USB_CONNECTED)
break; /* Hit */
if(TIME_AFTER(current_tick, end_tick))
{
/* Timed out waiting for the connect - will happen when connected
* to a charger through the USB port */
printf("USB: Timed out");
break;
}
if(usb_detect() == USB_EXTRACTED)
break; /* Cable pulled */
}
if(button == SYS_USB_CONNECTED)
{
/* Got the message - wait for disconnect */
printf("Bootloader USB mode");
/* Enable power management to charge */
powermgmt_init();
adc_init();
/* ack the SYS_USB_CONNECTED polled from the button queue */
usb_acknowledge(SYS_USB_CONNECTED_ACK);
while(1)
{
button = button_get_w_tmo(HZ/2);
if(button == SYS_USB_DISCONNECTED)
break;
struct imx233_powermgmt_info_t info = imx233_powermgmt_get_info();
lcd_putsf(0, 7, "%s: %s", MSG(240, "Status", "Charging status"),
info.state == CHARGE_STATE_DISABLED ? "disabled" :
info.state == CHARGE_STATE_ERROR ? "error" :
info.state == DISCHARGING ? "discharging" :
info.state == TRICKLE ? "trickle" :
info.state == TOPOFF ? "topoff" :
info.state == CHARGING ? "charging" : "<unknown>");
lcd_putsf(0, 8, "Battery: %d%% (%d mV)", battery_level(), battery_voltage());
lcd_putsf(0, 9, "%s: %d 'C [%d, %d]", MSG(240, "Die", "Die temp"),
adc_read(ADC_DIE_TEMP), IMX233_DIE_TEMP_HIGH,
IMX233_DIE_TEMP_LOW);
lcd_update();
}
}
/* Put drivers initialized for USB connection into a known state */
usb_close();
}
#else /* !HAVE_BOOTLOADER_USB_MODE */
static void usb_mode(int connect_timeout)
{
(void) connect_timeout;
}
#endif /* HAVE_BOOTLOADER_USB_MODE */
void main(uint32_t arg, uint32_t addr) NORETURN_ATTR;
void main(uint32_t arg, uint32_t addr)
{
unsigned char* loadbuffer;
int buffer_size;
void(*kernel_entry)(void);
int ret;
system_init();
kernel_init();
/* some ixm233 targets needs this because the cpu and/or memory is clocked
* at 24MHz, resulting in terribly slow boots and unusable usb mode.
* While we are at it, clock at maximum speed to minimise boot time. */
imx233_set_cpu_frequency(CPUFREQ_MAX);
power_init();
enable_irq();
lcd_init();
lcd_clear_display();
lcd_update();
backlight_init();
button_init();
printf("%s: %s", MSG(240, "Ver", "Boot version"), rbversion);
printf("%s: %x ", MSG(240, "Arg", "Boot arg"), arg);
printf("%s: %x", MSG(240, "Addr", "Boot addr"), addr);
#if IMX233_SUBTARGET >= 3780
printf("Power up source: %x", BF_RD(POWER_STS, PWRUP_SOURCE));
#endif
if(arg == 0xfee1dead)
{
printf("%s", MSG(240, "Disable window", "Disable partitions window"));
imx233_partitions_enable_window(false);
}
ret = storage_init();
if(ret < 0)
error(EATA, ret, true);
filesystem_init();
/* NOTE: disk_mount_all to fail since we can do USB after.
* We need this order to determine the correct logical sector size */
if((ret = disk_mount_all()) <= 0)
error(EDISK, ret, false);
if(usb_detect() == USB_INSERTED)
usb_mode(HZ);
/* dummy read, might be necessary to init things */
#ifdef HAVE_BUTTON_DATA
int data;
button_read_device(&data);
#else
button_read_device();
#endif
#ifdef HAS_BUTTON_HOLD
if(button_hold())
{
printf("Hold switch on");
printf("Shutting down...");
sleep(HZ);
power_off();
}
#endif
printf("Loading firmware");
loadbuffer = (unsigned char*)loadaddress;
buffer_size = (int)(loadaddressend - loadaddress);
while((ret = load_firmware(loadbuffer, BOOTFILE, buffer_size)) <= EFILE_EMPTY)
{
error(EBOOTFILE, ret, true);
}
kernel_entry = (void*) loadbuffer;
printf("Executing");
/* stop what was initialized to start from clean state */
system_prepare_fw_start();
/* if target defines lcd_enable() in bootloader, take this as a hint that
* we should use it to properly stop the lcd before moving one, the
* backlight_hw_off() routine is supposed to disable the lcd at the same time */
#ifdef HAVE_LCD_ENABLE
backlight_hw_off();
#endif
disable_interrupt(IRQ_FIQ_STATUS);
commit_discard_idcache();
kernel_entry();
printf("ERR: Failed to boot");
/* never returns */
while(1) ;
}
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