194 lines
4.9 KiB
C
194 lines
4.9 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2006 by Barry Wardell
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*
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* Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
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* and the ipodlinux bootloader by Daniel Palffy and Bernard Leach
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include "common.h"
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#include "cpu.h"
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#include "system.h"
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#include "../kernel-internal.h"
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#include "lcd.h"
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#include "font.h"
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#include "storage.h"
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#include "file_internal.h"
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#include "file.h"
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#include "button.h"
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#include "disk.h"
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#include "crc32.h"
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#include <string.h>
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#include "i2c.h"
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#include "backlight-target.h"
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#include "power.h"
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#include "version.h"
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#define START_SECTOR_OF_ROM 1
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#define ROMSECTOR_TO_HACK 63
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#define HACK_OFFSET 498
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#define KNOWN_CRC32 0x5a09c266 /* E200R CRC before patching */
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#define PATCHED_CRC32 0x0a162b34 /* E200R CRC after patching */
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static unsigned char knownBytes[] = {0x00, 0x24, 0x07, 0xe1};
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static unsigned char changedBytes[] = {0xc0, 0x46, 0xc0, 0x46 };
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/*
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CRC32s of sector 63 from E200 bootloaders - so we can tell users if they're
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trying to use e200rpatcher with a vanilla e200.
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These are all known E200 bootloaders as of 8 November 2007.
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*/
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static uint32_t e200_crcs[] =
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{
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0xbeceba58,
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0x4e6b038f,
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0x5e4f4219,
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0xae087742,
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0x3dd94852,
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0x72fa69f3,
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0x4ce0d10b
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};
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#define NUM_E200_CRCS ((int)((sizeof(e200_crcs) / sizeof(uint32_t))))
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static bool is_e200(uint32_t crc)
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{
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int i;
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for (i = 0 ; i < NUM_E200_CRCS ; i++)
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{
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if (crc == e200_crcs[i])
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return true;
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}
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return false;
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}
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void* main(void)
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{
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int i;
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int btn;
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int num_partitions;
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int crc32;
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char sector[512];
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struct partinfo pinfo;
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system_init();
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kernel_init();
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lcd_init();
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font_init();
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button_init();
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i2c_init();
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backlight_hw_on();
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lcd_set_foreground(LCD_WHITE);
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lcd_set_background(LCD_BLACK);
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lcd_clear_display();
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btn = button_read_device();
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verbose = true;
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lcd_setfont(FONT_SYSFIXED);
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printf("Rockbox e200R installer");
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printf("Version: %s", rbversion);
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printf(MODEL_NAME);
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printf("");
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i=storage_init();
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filesystem_init();
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num_partitions = disk_mount_all();
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if (num_partitions<=0)
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{
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error(EDISK, num_partitions, true);
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}
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disk_partinfo(1, &pinfo);
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#if 0 /* not needed in release builds */
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printf("--- Partition info ---");
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printf("start: %x", pinfo.start);
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printf("size: %x", pinfo.size);
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printf("type: %x", pinfo.type);
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printf("reading: %x", (START_SECTOR_OF_ROM + ROMSECTOR_TO_HACK)*512);
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#endif
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storage_read_sectors(pinfo.start + START_SECTOR_OF_ROM + ROMSECTOR_TO_HACK,
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1 , sector);
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crc32 = crc_32r (sector, 512, 0);
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#if 0 /* not needed in release builds */
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printf("--- Hack Status ---");
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printf("Sector checksum: %x", crc32);
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#endif
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if (crc32 == PATCHED_CRC32)
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{
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/* Bootloader already patched */
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printf("Already unlocked");
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printf("Proceed to Step 2");
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} else if ((crc32 == KNOWN_CRC32) &&
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!memcmp(§or[HACK_OFFSET], knownBytes,
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sizeof(knownBytes)/sizeof(*knownBytes)))
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{
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/* E200R bootloader detected - patch it */
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memcpy(§or[HACK_OFFSET], changedBytes,
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sizeof(changedBytes)/sizeof(*changedBytes));
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storage_write_sectors(
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pinfo.start + START_SECTOR_OF_ROM + ROMSECTOR_TO_HACK,
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1 , sector);
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printf("Firmware unlocked");
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printf("Proceed to Step 2");
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} else if (is_e200(crc32))
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{
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printf("Vanilla E200 detected!");
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printf("Please install using");
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printf("Sansapatcher");
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}
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else
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{
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printf("Unknown bootloader");
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printf("Rockbox installer cannot");
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printf("continue");
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}
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/* Turn button lights off */
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GPIOG_OUTPUT_VAL &=~0x80;
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printf("");
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if (button_hold())
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printf("Release Hold and");
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printf("Press any key to shutdown");
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while(button_read_device() == BUTTON_NONE);
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power_off();
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return NULL;
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}
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