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 #include "usb.h"
  32
  33
  34 static void load_fw(unsigned char* ptr, unsigned int len)
  35 {
  36     (void)ptr;
  37     (void)len;
  38     asm volatile("ldr pc, =0x1EE0000");
  39 }
  40
  41 void main(void)
  42 {
  43     unsigned char* loadbuffer;
  44     int buffer_size;
  45     int(*kernel_entry)(void);
  46     int ret;
  47
  48     /* Make sure interrupts are disabled */
  49     set_irq_level(IRQ_DISABLED);
  50     set_fiq_status(FIQ_DISABLED);
  51     system_init();
  52     kernel_init();
  53
  54     /* Now enable interrupts */
  55     set_irq_level(IRQ_ENABLED);
  56     set_fiq_status(FIQ_ENABLED);
  57     backlight_init();
  58     lcd_init();
  59     font_init();
  60     button_init();
  61     usb_init();
  62
  63     lcd_enable(true);
  64     lcd_setfont(FONT_SYSFIXED);
  65     reset_screen();
  66     printf("Rockbox boot loader");
  67     printf("Version %s", APPSVERSION);
  68
  69     ret = storage_init();
  70     if(ret)
  71         printf("ATA error: %d", ret);
  72
  73     /* If no button is held, start the OF */
  74     if(button_read_device() == 0)
  75     {
  76         printf("Loading Creative firmware...");
  77
  78         loadbuffer = (unsigned char*)0x00A00000;
  79         ret = load_minifs_file("creativeos.jrm", loadbuffer);
  80         if(ret != -1)
  81         {
  82             set_irq_level(IRQ_DISABLED);
  83             set_fiq_status(FIQ_DISABLED);
  84             /* Doesn't return! */
  85             load_fw(loadbuffer, ret);
  86         }
  87         else
  88             printf("FAILED!");
  89     }
  90     else
  91     {
  92         disk_init();
  93
  94         ret = disk_mount_all();
  95         if (ret <= 0)
  96             error(EDISK, ret);
  97
  98         printf("Loading Rockbox firmware...");
  99
 100         loadbuffer = (unsigned char*)0x00900000;
 101         buffer_size = (unsigned char*)0x01900000 - loadbuffer;
 102
 103         ret = load_firmware(loadbuffer, BOOTFILE, buffer_size);
 104         if(ret < 0)
 105             error(EBOOTFILE, ret);
 106
 107         else if(ret == EOK)
 108         {
 109             kernel_entry = (void*) loadbuffer;
 110             ret = kernel_entry();
 111             printf("FAILED!");
 112         }
 113     }
 114
 115     storage_sleepnow();
 116
 117     while(1);
 118 }