bootloader/imx233.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2011 by amaury Pouly
  11  *
  12  * Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
  13  * and the ipodlinux bootloader by Daniel Palffy and Bernard Leach
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  21  * KIND, either express or implied.
  22  *
  23  ****************************************************************************/
  24
  25 #include <stdio.h>
  26 #include <system.h>
  27 #include <inttypes.h>
  28 #include "config.h"
  29 #include "gcc_extensions.h"
  30 #include "lcd.h"
  31 #include "backlight.h"
  32 #include "button-target.h"
  33 #include "common.h"
  34 #include "storage.h"
  35 #include "disk.h"
  36 #include "panic.h"
  37 #include "power.h"
  38 #include "power-imx233.h"
  39 #include "system-target.h"
  40 #include "fmradio_i2c.h"
  41 #include "version.h"
  42 #include "powermgmt.h"
  43 #include "partitions-imx233.h"
  44 #include "adc-imx233.h"
  45
  46 #include "usb.h"
  47
  48 extern char loadaddress[];
  49 extern char loadaddressend[];
  50
  51 #ifdef HAVE_BOOTLOADER_USB_MODE
  52 static void usb_mode(int connect_timeout)
  53 {
  54     int button;
  55
  56     usb_init();
  57     usb_start_monitoring();
  58
  59     /* Wait for threads to connect or cable is pulled */
  60     printf("USB: Connecting");
  61
  62     long end_tick = current_tick + connect_timeout;
  63
  64     while(1)
  65     {
  66         button = button_get_w_tmo(HZ/10);
  67
  68         if(button == SYS_USB_CONNECTED)
  69             break; /* Hit */
  70
  71         if(TIME_AFTER(current_tick, end_tick))
  72         {
  73             /* Timed out waiting for the connect - will happen when connected
  74              * to a charger through the USB port */
  75             printf("USB: Timed out");
  76             break;
  77         }
  78
  79         if(usb_detect() == USB_EXTRACTED)
  80             break; /* Cable pulled */
  81     }
  82
  83     if(button == SYS_USB_CONNECTED)
  84     {
  85         /* Got the message - wait for disconnect */
  86         printf("Bootloader USB mode");
  87         /* Enable power management to charge */
  88         powermgmt_init();
  89         adc_init();
  90
  91         usb_acknowledge(SYS_USB_CONNECTED_ACK);
  92
  93         while(1)
  94         {
  95             button = button_get_w_tmo(HZ/2);
  96             if(button == SYS_USB_DISCONNECTED)
  97                 break;
  98             struct imx233_powermgmt_info_t info = imx233_powermgmt_get_info();
  99             lcd_putsf(0, 7, "Charging status: %s",
 100                 info.state == CHARGE_STATE_DISABLED ? "disabled" :
 101                 info.state == CHARGE_STATE_ERROR ? "error" :
 102                 info.state == DISCHARGING ? "discharging" :
 103                 info.state == TRICKLE ? "trickle" :
 104                 info.state == TOPOFF ? "topoff" :
 105                 info.state == CHARGING ? "charging" : "<unknown>");
 106             lcd_putsf(0, 8, "Battery: %d%% (%d mV)", battery_level(), battery_voltage());
 107             lcd_putsf(0, 9, "Die temp: %d°C [%d, %d]",
 108                 adc_read(ADC_DIE_TEMP), IMX233_DIE_TEMP_HIGH,
 109                 IMX233_DIE_TEMP_LOW);
 110             #ifdef ADC_BATT_TEMP
 111             lcd_putsf(0, 10, "Batt temp: %d [%d, %d]",
 112                 adc_read(ADC_BATT_TEMP), IMX233_BATT_TEMP_HIGH,
 113                 IMX233_BATT_TEMP_LOW);
 114             #endif
 115             lcd_update();
 116         }
 117     }
 118
 119     /* Put drivers initialized for USB connection into a known state */
 120     usb_close();
 121 }
 122 #else /* !HAVE_BOOTLOADER_USB_MODE */
 123 static void usb_mode(int connect_timeout)
 124 {
 125     (void) connect_timeout;
 126 }
 127 #endif /* HAVE_BOOTLOADER_USB_MODE */
 128
 129 void main(uint32_t arg, uint32_t addr) NORETURN_ATTR;
 130 void main(uint32_t arg, uint32_t addr)
 131 {
 132     unsigned char* loadbuffer;
 133     int buffer_size;
 134     void(*kernel_entry)(void);
 135     int ret;
 136
 137     system_init();
 138     kernel_init();
 139
 140     power_init();
 141     enable_irq();
 142
 143     lcd_init();
 144     lcd_clear_display();
 145     lcd_update();
 146
 147     backlight_init();
 148
 149     button_init();
 150
 151     printf("Boot version: %s", RBVERSION);
 152     printf("arg=%x addr=%x", arg, addr);
 153     printf("power up source: %x", __XTRACT(HW_POWER_STS, PWRUP_SOURCE));
 154
 155     if(arg == 0xfee1dead)
 156     {
 157         printf("Disable partitions window.");
 158         imx233_partitions_enable_window(false);
 159     }
 160
 161     ret = storage_init();
 162     if(ret < 0)
 163         error(EATA, ret, true);
 164
 165     /* NOTE: allow disk_init and disk_mount_all to fail since we can do USB after.
 166      * We need this order to determine the correct logical sector size */
 167     while(!disk_init(IF_MV(0)))
 168         printf("disk_init failed!");
 169
 170     if((ret = disk_mount_all()) <= 0)
 171         error(EDISK, ret, false);
 172
 173     if(usb_detect() == USB_INSERTED)
 174         usb_mode(HZ);
 175
 176     printf("Loading firmware");
 177
 178     loadbuffer = (unsigned char*)loadaddress;
 179     buffer_size = (int)(loadaddressend - loadaddress);
 180
 181     while((ret = load_firmware(loadbuffer, BOOTFILE, buffer_size)) < 0)
 182     {
 183         error(EBOOTFILE, ret, true);
 184     }
 185
 186     kernel_entry = (void*) loadbuffer;
 187     printf("Executing");
 188     disable_interrupt(IRQ_FIQ_STATUS);
 189     commit_discard_idcache();
 190     kernel_entry();
 191     printf("ERR: Failed to boot");
 192
 193     /* never returns */
 194     while(1) ;
 195 }