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