bootloader/iaudio_x5.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 by Linus Nielsen Feltzing
  11  *
  12  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19 #include "config.h"
  20
  21 #include <stdlib.h>
  22 #include <stdio.h>
  23 #include "inttypes.h"
  24 #include "string.h"
  25 #include "cpu.h"
  26 #include "system.h"
  27 #include "lcd.h"
  28 #include "lcd-remote.h"
  29 #include "kernel.h"
  30 #include "thread.h"
  31 #include "ata.h"
  32 #include "usb.h"
  33 #include "disk.h"
  34 #include "font.h"
  35 #include "adc.h"
  36 #include "backlight.h"
  37 #include "backlight-target.h"
  38 #include "button.h"
  39 #include "panic.h"
  40 #include "power.h"
  41 #include "powermgmt.h"
  42 #include "file.h"
  43
  44 #include "pcf50606.h"
  45 #include "common.h"
  46
  47 #include <stdarg.h>
  48
  49 /* Maximum allowed firmware image size. 10MB is more than enough */
  50 #define MAX_LOADSIZE (10*1024*1024)
  51
  52 #define DRAM_START 0x31000000
  53
  54 int usb_screen(void)
  55 {
  56    return 0;
  57 }
  58
  59 char version[] = APPSVERSION;
  60
  61 /* Reset the cookie for the crt0 crash check */
  62 inline void __reset_cookie(void)
  63 {
  64     asm(" move.l #0,%d0");
  65     asm(" move.l %d0,0x10017ffc");
  66 }
  67
  68 void start_firmware(void)
  69 {
  70     asm(" move.w #0x2700,%sr");
  71     __reset_cookie();
  72     asm(" move.l %0,%%d0" :: "i"(DRAM_START));
  73     asm(" movec.l %d0,%vbr");
  74     asm(" move.l %0,%%sp" :: "m"(*(int *)DRAM_START));
  75     asm(" move.l %0,%%a0" :: "m"(*(int *)(DRAM_START+4)));
  76     asm(" jmp (%a0)");
  77 }
  78
  79 void shutdown(void)
  80 {
  81     printf("Shutting down...");
  82
  83     /* We need to gracefully spin down the disk to prevent clicks. */
  84     if (ide_powered())
  85     {
  86         /* Make sure ATA has been initialized. */
  87         ata_init();
  88
  89         /* And put the disk into sleep immediately. */
  90         ata_sleepnow();
  91     }
  92
  93     sleep(HZ*2);
  94
  95     /* Backlight OFF */
  96     _backlight_off();
  97 #ifdef HAVE_REMOTE_LCD
  98     _remote_backlight_off();
  99 #endif
 100
 101     __reset_cookie();
 102     power_off();
 103 }
 104
 105 /* Print the battery voltage (and a warning message). */
 106 void check_battery(void)
 107 {
 108     int battery_voltage, batt_int, batt_frac;
 109
 110     battery_voltage = battery_adc_voltage();
 111     batt_int = battery_voltage / 1000;
 112     batt_frac = (battery_voltage % 1000) / 10;
 113
 114     printf("Batt: %d.%02dV", batt_int, batt_frac);
 115
 116     if (battery_voltage <= 350)
 117     {
 118         printf("WARNING! BATTERY LOW!!");
 119         sleep(HZ*2);
 120     }
 121 }
 122
 123 void main(void)
 124 {
 125     int i;
 126     int rc;
 127     bool rc_on_button = false;
 128     bool on_button = false;
 129     bool rec_button = false;
 130     bool hold_status = false;
 131     int data;
 132
 133     (void)rc_on_button;
 134     (void)on_button;
 135     (void)rec_button;
 136     (void)hold_status;
 137     (void)data;
 138     power_init();
 139
 140     system_init();
 141     kernel_init();
 142
 143     set_cpu_frequency(CPUFREQ_NORMAL);
 144     coldfire_set_pllcr_audio_bits(DEFAULT_PLLCR_AUDIO_BITS);
 145
 146     set_irq_level(0);
 147     lcd_init();
 148 #ifdef HAVE_REMOTE_LCD
 149     lcd_remote_init();
 150 #endif
 151     backlight_init();
 152     font_init();
 153     adc_init();
 154     button_init();
 155
 156     printf("Rockbox boot loader");
 157     printf("Version %s", version);
 158
 159     check_battery();
 160
 161     rc = ata_init();
 162     if(rc)
 163     {
 164         printf("ATA error: %d", rc);
 165         sleep(HZ*5);
 166         power_off();
 167     }
 168
 169     disk_init();
 170
 171     rc = disk_mount_all();
 172     if (rc<=0)
 173     {
 174         printf("No partition found");
 175         sleep(HZ*5);
 176         power_off();
 177     }
 178
 179     printf("Loading firmware");
 180     i = load_firmware((unsigned char *)DRAM_START, BOOTFILE, MAX_LOADSIZE);
 181     printf("Result: %s", strerror(i));
 182
 183     if (i < EOK) {
 184         printf("Error!");
 185         printf("Can't load rockbox.iaudio:");
 186         printf(strerror(rc));
 187         sleep(HZ*3);
 188         power_off();
 189     } else {
 190         start_firmware();
 191     }
 192 }
 193
 194 /* These functions are present in the firmware library, but we reimplement
 195    them here because the originals do a lot more than we want */
 196 void screen_dump(void)
 197 {
 198 }