bootloader/creativezvm.c

   1 /***************************************************************************
   2 *             __________               __   ___.
   3 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7 *                     \/            \/     \/    \/            \/
   8 * $Id$
   9 *
  10 * Copyright (C) 2008 by Maurus Cuelenaere
  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
  20 #include "system.h"
  21 #include "lcd.h"
  22 #include "kernel.h"
  23 #include "thread.h"
  24 #include "storage.h"
  25 #include "ata-target.h"
  26 #include "disk.h"
  27 #include "font.h"
  28 #include "backlight.h"
  29 #include "button.h"
  30 #include "common.h"
  31
  32
  33 static void load_fw(unsigned char* ptr, unsigned int len)
  34 {
  35     (void)ptr;
  36     (void)len;
  37     asm volatile("ldr pc, =0x1EE0000");
  38 }
  39
  40 void main(void)
  41 {
  42     unsigned char* loadbuffer;
  43     int buffer_size;
  44     int(*kernel_entry)(void);
  45     int ret;
  46
  47     /* Make sure interrupts are disabled */
  48     set_irq_level(IRQ_DISABLED);
  49     set_fiq_status(FIQ_DISABLED);
  50     system_init();
  51     kernel_init();
  52
  53     /* Now enable interrupts */
  54     set_irq_level(IRQ_ENABLED);
  55     set_fiq_status(FIQ_ENABLED);
  56     backlight_init();
  57     lcd_init();
  58     font_init();
  59     button_init();
  60
  61     lcd_enable(true);
  62     lcd_setfont(FONT_SYSFIXED);
  63     reset_screen();
  64     printf("Rockbox boot loader");
  65     printf("Version %s", APPSVERSION);
  66
  67     ret = storage_init();
  68     if(ret)
  69         printf("ATA error: %d", ret);
  70
  71     /* If no button is held, start the OF */
  72     if(button_read_device() == 0)
  73     {
  74         printf("Loading Creative firmware...");
  75
  76         loadbuffer = (unsigned char*)0x00A00000;
  77         ret = load_minifs_file("creativeos.jrm", loadbuffer);
  78         if(ret != -1)
  79         {
  80             set_irq_level(IRQ_DISABLED);
  81             set_fiq_status(FIQ_DISABLED);
  82             /* Doesn't return! */
  83             load_fw(loadbuffer, ret);
  84         }
  85         else
  86             printf("FAILED!");
  87     }
  88     else
  89     {
  90         disk_init();
  91
  92         ret = disk_mount_all();
  93         if (ret <= 0)
  94             error(EDISK, ret);
  95
  96         printf("Loading Rockbox firmware...");
  97
  98         loadbuffer = (unsigned char*)0x00900000;
  99         buffer_size = (unsigned char*)0x01900000 - loadbuffer;
 100
 101         ret = load_firmware(loadbuffer, BOOTFILE, buffer_size);
 102         if(ret < 0)
 103             error(EBOOTFILE, ret);
 104
 105         else if(ret == EOK)
 106         {
 107             kernel_entry = (void*) loadbuffer;
 108             ret = kernel_entry();
 109             printf("FAILED!");
 110         }
 111     }
 112
 113     while(1);
 114 }