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 #include "version.h"
  33
  34
  35 static void load_fw(unsigned char* ptr, unsigned int len)
  36 {
  37     (void)ptr;
  38     (void)len;
  39     asm volatile("ldr pc, =0x1EE0000");
  40 }
  41
  42 void main(void)
  43 {
  44     unsigned char* loadbuffer;
  45     int buffer_size;
  46     int(*kernel_entry)(void);
  47     int ret;
  48
  49     /* Make sure interrupts are disabled */
  50     set_irq_level(IRQ_DISABLED);
  51     set_fiq_status(FIQ_DISABLED);
  52     system_init();
  53     kernel_init();
  54
  55     /* Now enable interrupts */
  56     set_irq_level(IRQ_ENABLED);
  57     set_fiq_status(FIQ_ENABLED);
  58     backlight_init();
  59     lcd_init();
  60     font_init();
  61     button_init();
  62     usb_init();
  63
  64 #ifdef HAVE_LCD_ENABLE
  65     lcd_enable(true);
  66 #endif
  67     lcd_setfont(FONT_SYSFIXED);
  68     reset_screen();
  69     printf("Rockbox boot loader");
  70     printf("Version " RBVERSION);
  71
  72     ret = storage_init();
  73     if(ret)
  74         printf("ATA error: %d", ret);
  75
  76     /* If no button is held, start the OF */
  77     if(button_read_device() == 0)
  78     {
  79         printf("Loading Creative firmware...");
  80
  81         loadbuffer = (unsigned char*)0x00A00000;
  82         ret = load_minifs_file("creativeos.jrm", loadbuffer);
  83         if(ret != -1)
  84         {
  85             set_irq_level(IRQ_DISABLED);
  86             set_fiq_status(FIQ_DISABLED);
  87             /* Doesn't return! */
  88             load_fw(loadbuffer, ret);
  89         }
  90         else
  91             printf("FAILED!");
  92     }
  93     else
  94     {
  95         disk_init();
  96
  97         ret = disk_mount_all();
  98         if (ret <= 0)
  99             error(EDISK, ret);
 100
 101         printf("Loading Rockbox firmware...");
 102
 103         loadbuffer = (unsigned char*)0x00900000;
 104         buffer_size = (unsigned char*)0x01900000 - loadbuffer;
 105
 106         ret = load_firmware(loadbuffer, BOOTFILE, buffer_size);
 107         if(ret < 0)
 108             error(EBOOTFILE, ret);
 109
 110         else if(ret == EOK)
 111         {
 112             kernel_entry = (void*) loadbuffer;
 113             ret = kernel_entry();
 114             printf("FAILED!");
 115         }
 116     }
 117
 118     storage_sleepnow();
 119
 120     while(1);
 121 }