bootloader/main-e200r-installer.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2006 by Barry Wardell
  11  *
  12  * Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
  13  * and the ipodlinux bootloader by Daniel Palffy and Bernard Leach
  14  *
  15  * All files in this archive are subject to the GNU General Public License.
  16  * See the file COPYING in the source tree root for full license agreement.
  17  *
  18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  19  * KIND, either express or implied.
  20  *
  21  ****************************************************************************/
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include "common.h"
  25 #include "cpu.h"
  26 #include "file.h"
  27 #include "system.h"
  28 #include "kernel.h"
  29 #include "lcd.h"
  30 #include "font.h"
  31 #include "ata.h"
  32 #include "button.h"
  33 #include "disk.h"
  34 #include "crc32-mi4.h"
  35 #include <string.h>
  36 #include "i2c.h"
  37 #include "backlight-target.h"
  38
  39 /* Bootloader version */
  40 char version[] = APPSVERSION;
  41
  42 #define START_SECTOR_OF_ROM 1
  43 #define ROMSECTOR_TO_HACK 63
  44 #define HACK_OFFSET 498
  45 #define KNOWN_CRC32 0x5a09c266
  46 char knownBytes[] = {0x00, 0x24, 0x07, 0xe1};
  47 char changedBytes[] = {0xc0, 0x46, 0xc0, 0x46 };
  48 void* main(void)
  49 {
  50     int i;
  51     int btn;
  52     int num_partitions;
  53     int crc32;
  54     char sector[512];
  55     struct partinfo* pinfo;
  56     chksum_crc32gentab ();
  57
  58     system_init();
  59     kernel_init();
  60     lcd_init();
  61     font_init();
  62     button_init();
  63     i2c_init();
  64     __backlight_on();
  65
  66     lcd_set_foreground(LCD_WHITE);
  67     lcd_set_background(LCD_BLACK);
  68     lcd_clear_display();
  69
  70     btn = button_read_device();
  71     verbose = true;
  72
  73     lcd_setfont(FONT_SYSFIXED);
  74
  75     printf("Rockbox e200R installer");
  76     printf("Version: %s", version);
  77     printf(MODEL_NAME);
  78
  79     i=ata_init();
  80     disk_init(IF_MV(0));
  81     num_partitions = disk_mount_all();
  82     if (num_partitions<=0)
  83     {
  84         error(EDISK,num_partitions);
  85     }
  86     pinfo = disk_partinfo(1);
  87     printf("--- Partition info ---");
  88     printf("start: %x", pinfo->start);
  89     printf("size: %x", pinfo->size);
  90     printf("type: %x", pinfo->type);
  91     printf("reading: %x", (START_SECTOR_OF_ROM + ROMSECTOR_TO_HACK)*512);
  92     ata_read_sectors(IF_MV2(0,)
  93                         pinfo->start + START_SECTOR_OF_ROM + ROMSECTOR_TO_HACK,
  94                         1 , sector);
  95     crc32 = chksum_crc32 (sector, 512);
  96     printf("--- Hack Status ---");
  97     printf("Sector checksum: %x", crc32);
  98
  99     if ((crc32 == KNOWN_CRC32) &&
 100         !memcmp(&sector[HACK_OFFSET], knownBytes,
 101                 sizeof(knownBytes)/sizeof(*knownBytes)))
 102     {
 103
 104         memcpy(&sector[HACK_OFFSET], changedBytes,
 105                 sizeof(changedBytes)/sizeof(*changedBytes));
 106         ata_write_sectors(IF_MV2(0,)
 107                         pinfo->start + START_SECTOR_OF_ROM + ROMSECTOR_TO_HACK,
 108                         1 , sector);
 109         printf("Firmware Hacked");
 110         printf("Proceed to Step 2");
 111     }
 112     else
 113         printf("Unknown bootloader... aborted");
 114     GPIOG_OUTPUT_VAL &=~0x80;
 115
 116     while(1);
 117     return NULL;
 118 }
 119