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 "file.h"
  42
  43 #include "pcf50606.h"
  44 #include "common.h"
  45
  46 #include <stdarg.h>
  47
  48 /* Maximum allowed firmware image size. 10MB is more than enough */
  49 #define MAX_LOADSIZE (10*1024*1024)
  50
  51 #define DRAM_START 0x31000000
  52
  53 int usb_screen(void)
  54 {
  55    return 0;
  56 }
  57
  58 char version[] = APPSVERSION;
  59
  60 /* Reset the cookie for the crt0 crash check */
  61 inline void __reset_cookie(void)
  62 {
  63     asm(" move.l #0,%d0");
  64     asm(" move.l %d0,0x10017ffc");
  65 }
  66
  67 void start_firmware(void)
  68 {
  69     asm(" move.w #0x2700,%sr");
  70     __reset_cookie();
  71     asm(" move.l %0,%%d0" :: "i"(DRAM_START));
  72     asm(" movec.l %d0,%vbr");
  73     asm(" move.l %0,%%sp" :: "m"(*(int *)DRAM_START));
  74     asm(" move.l %0,%%a0" :: "m"(*(int *)(DRAM_START+4)));
  75     asm(" jmp (%a0)");
  76 }
  77
  78 void shutdown(void)
  79 {
  80     printf("Shutting down...");
  81
  82     /* We need to gracefully spin down the disk to prevent clicks. */
  83     if (ide_powered())
  84     {
  85         /* Make sure ATA has been initialized. */
  86         ata_init();
  87
  88         /* And put the disk into sleep immediately. */
  89         ata_sleepnow();
  90     }
  91
  92     sleep(HZ*2);
  93
  94     /* Backlight OFF */
  95     __backlight_off();
  96 #ifdef HAVE_REMOTE_LCD
  97     __remote_backlight_off();
  98 #endif
  99
 100     __reset_cookie();
 101     power_off();
 102 }
 103
 104 /* Print the battery voltage (and a warning message). */
 105 void check_battery(void)
 106 {
 107     int adc_battery, battery_voltage, batt_int, batt_frac;
 108
 109     adc_battery = adc_read(ADC_BATTERY);
 110
 111     battery_voltage = (adc_battery * BATTERY_SCALE_FACTOR) / 10000;
 112     batt_int = battery_voltage / 100;
 113     batt_frac = battery_voltage % 100;
 114
 115     printf("Batt: %d.%02dV", batt_int, batt_frac);
 116
 117     if (battery_voltage <= 350)
 118     {
 119         printf("WARNING! BATTERY LOW!!");
 120         sleep(HZ*2);
 121     }
 122 }
 123
 124 void main(void)
 125 {
 126     int i;
 127     int rc;
 128     bool rc_on_button = false;
 129     bool on_button = false;
 130     bool rec_button = false;
 131     bool hold_status = false;
 132     int data;
 133
 134     (void)rc_on_button;
 135     (void)on_button;
 136     (void)rec_button;
 137     (void)hold_status;
 138     (void)data;
 139     power_init();
 140
 141     system_init();
 142     kernel_init();
 143
 144     set_cpu_frequency(CPUFREQ_NORMAL);
 145     coldfire_set_pllcr_audio_bits(DEFAULT_PLLCR_AUDIO_BITS);
 146
 147     set_irq_level(0);
 148     lcd_init();
 149 #ifdef HAVE_REMOTE_LCD
 150     lcd_remote_init();
 151 #endif
 152     backlight_init();
 153     font_init();
 154     adc_init();
 155     button_init();
 156
 157     printf("Rockbox boot loader");
 158     printf("Version %s", version);
 159
 160     check_battery();
 161
 162     rc = ata_init();
 163     if(rc)
 164     {
 165         printf("ATA error: %d", rc);
 166         sleep(HZ*5);
 167         power_off();
 168     }
 169
 170     disk_init();
 171
 172     rc = disk_mount_all();
 173     if (rc<=0)
 174     {
 175         printf("No partition found");
 176         sleep(HZ*5);
 177         power_off();
 178     }
 179
 180     printf("Loading firmware");
 181     i = load_firmware((unsigned char *)DRAM_START, BOOTFILE, MAX_LOADSIZE);
 182     printf("Result: %s", strerror(i));
 183
 184     if (i < EOK) {
 185         printf("Error!");
 186         printf("Can't load rockbox.iaudio:");
 187         printf(strerror(rc));
 188         sleep(HZ*3);
 189         power_off();
 190     } else {
 191         start_firmware();
 192     }
 193 }
 194
 195 /* These functions are present in the firmware library, but we reimplement
 196    them here because the originals do a lot more than we want */
 197 void screen_dump(void)
 198 {
 199 }