bootloader/main-pp.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  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  21  * KIND, either express or implied.
  22  *
  23  ****************************************************************************/
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26
  27 #include "config.h"
  28 #include "common.h"
  29 #include "cpu.h"
  30 #include "file.h"
  31 #include "system.h"
  32 #include "kernel.h"
  33 #include "lcd.h"
  34 #include "font.h"
  35 #include "storage.h"
  36 #include "adc.h"
  37 #include "button.h"
  38 #include "disk.h"
  39 #include "crc32-mi4.h"
  40 #include <string.h>
  41 #include "power.h"
  42 #if defined(SANSA_E200) || defined(PHILIPS_SA9200)
  43 #include "i2c.h"
  44 #include "backlight-target.h"
  45 #endif
  46 #if defined(SANSA_E200) || defined(SANSA_C200) || defined(PHILIPS_SA9200)
  47 #include "usb.h"
  48 #include "usb_drv.h"
  49 #endif
  50 #if defined(SAMSUNG_YH925)
  51 /* this function (in lcd-yh925.c) resets the screen orientation for the OF
  52  * for use with dualbooting */
  53 void lcd_reset(void);
  54 #endif
  55
  56 /* Show the Rockbox logo - in show_logo.c */
  57 extern int show_logo(void);
  58
  59 /* Button definitions */
  60 #if CONFIG_KEYPAD == IRIVER_H10_PAD
  61 #define BOOTLOADER_BOOT_OF      BUTTON_LEFT
  62
  63 #elif CONFIG_KEYPAD == SANSA_E200_PAD
  64 #define BOOTLOADER_BOOT_OF      BUTTON_LEFT
  65
  66 #elif CONFIG_KEYPAD == SANSA_C200_PAD
  67 #define BOOTLOADER_BOOT_OF      BUTTON_LEFT
  68
  69 #elif CONFIG_KEYPAD == MROBE100_PAD
  70 #define BOOTLOADER_BOOT_OF      BUTTON_POWER
  71
  72 #elif CONFIG_KEYPAD == PHILIPS_SA9200_PAD
  73 #define BOOTLOADER_BOOT_OF      BUTTON_VOL_UP
  74
  75 #elif CONFIG_KEYPAD == PHILIPS_HDD1630_PAD
  76 #define BOOTLOADER_BOOT_OF      BUTTON_MENU
  77
  78 #elif CONFIG_KEYPAD == SAMSUNG_YH_PAD
  79 #define BOOTLOADER_BOOT_OF      BUTTON_LEFT
  80
  81 #elif CONFIG_KEYPAD == SANSA_FUZE_PAD
  82 #define BOOTLOADER_BOOT_OF      BUTTON_LEFT
  83
  84 #endif
  85
  86 /* Maximum allowed firmware image size. 10MB is more than enough */
  87 #define MAX_LOADSIZE (10*1024*1024)
  88
  89 /* A buffer to load the original firmware or Rockbox into */
  90 unsigned char *loadbuffer = (unsigned char *)DRAM_START;
  91
  92 /* Bootloader version */
  93 char version[] = APPSVERSION;
  94
  95 /* Locations and sizes in hidden partition on Sansa */
  96 #if (CONFIG_STORAGE & STORAGE_SD)
  97 #define PPMI_SECTOR_OFFSET  1024
  98 #define PPMI_SECTORS        1
  99 #define MI4_HEADER_SECTORS  1
 100 #define NUM_PARTITIONS      2
 101
 102 #else
 103 #define NUM_PARTITIONS      1
 104
 105 #endif
 106
 107 #define MI4_HEADER_SIZE     0x200
 108
 109 /* mi4 header structure */
 110 struct mi4header_t {
 111     unsigned char magic[4];
 112     uint32_t version;
 113     uint32_t length;
 114     uint32_t crc32;
 115     uint32_t enctype;
 116     uint32_t mi4size;
 117     uint32_t plaintext;
 118     uint32_t dsa_key[10];
 119     uint32_t pad[109];
 120     unsigned char type[4];
 121     unsigned char model[4];
 122 };
 123
 124 /* PPMI header structure */
 125 struct ppmi_header_t {
 126     unsigned char magic[4];
 127     uint32_t length;
 128     uint32_t pad[126];
 129 };
 130
 131 inline unsigned int le2int(unsigned char* buf)
 132 {
 133    int32_t res = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0];
 134
 135    return res;
 136 }
 137
 138 inline void int2le(unsigned int val, unsigned char* addr)
 139 {
 140     addr[0] = val & 0xFF;
 141     addr[1] = (val >> 8) & 0xff;
 142     addr[2] = (val >> 16) & 0xff;
 143     addr[3] = (val >> 24) & 0xff;
 144 }
 145
 146 struct tea_key {
 147   const char * name;
 148   uint32_t     key[4];
 149 };
 150
 151 #define NUM_KEYS (sizeof(tea_keytable)/sizeof(tea_keytable[0]))
 152 struct tea_key tea_keytable[] = {
 153   { "default" ,          { 0x20d36cc0, 0x10e8c07d, 0xc0e7dcaa, 0x107eb080 } },
 154   { "sansa",             { 0xe494e96e, 0x3ee32966, 0x6f48512b, 0xa93fbb42 } },
 155   { "sansa_gh",          { 0xd7b10538, 0xc662945b, 0x1b3fce68, 0xf389c0e6 } },
 156   { "sansa_103",         { 0x1d29ddc0, 0x2579c2cd, 0xce339e1a, 0x75465dfe } },
 157   { "rhapsody",          { 0x7aa9c8dc, 0xbed0a82a, 0x16204cc7, 0x5904ef38 } },
 158   { "p610",              { 0x950e83dc, 0xec4907f9, 0x023734b9, 0x10cfb7c7 } },
 159   { "p640",              { 0x220c5f23, 0xd04df68e, 0x431b5e25, 0x4dcc1fa1 } },
 160   { "virgin",            { 0xe83c29a1, 0x04862973, 0xa9b3f0d4, 0x38be2a9c } },
 161   { "20gc_eng",          { 0x0240772c, 0x6f3329b5, 0x3ec9a6c5, 0xb0c9e493 } },
 162   { "20gc_fre",          { 0xbede8817, 0xb23bfe4f, 0x80aa682d, 0xd13f598c } },
 163   { "elio_p722",         { 0x6af3b9f8, 0x777483f5, 0xae8181cc, 0xfa6d8a84 } },
 164   { "c200",              { 0xbf2d06fa, 0xf0e23d59, 0x29738132, 0xe2d04ca7 } },
 165   { "c200_103",          { 0x2a7968de, 0x15127979, 0x142e60a7, 0xe49c1893 } },
 166   { "c200_106",          { 0xa913d139, 0xf842f398, 0x3e03f1a6, 0x060ee012 } },
 167   { "view",              { 0x70e19bda, 0x0c69ea7d, 0x2b8b1ad1, 0xe9767ced } },
 168   { "sa9200",            { 0x33ea0236, 0x9247bdc5, 0xdfaedf9f, 0xd67c9d30 } },
 169   { "hdd1630",           { 0x04543ced, 0xcebfdbad, 0xf7477872, 0x0d12342e } },
 170 };
 171
 172 /*
 173
 174 tea_decrypt() from http://en.wikipedia.org/wiki/Tiny_Encryption_Algorithm
 175
 176 "Following is an adaptation of the reference encryption and decryption
 177 routines in C, released into the public domain by David Wheeler and
 178 Roger Needham:"
 179
 180 */
 181
 182 /* NOTE: The mi4 version of TEA uses a different initial value to sum compared
 183          to the reference implementation and the main loop is 8 iterations, not
 184          32.
 185 */
 186
 187 static void tea_decrypt(uint32_t* v0, uint32_t* v1, uint32_t* k) {
 188     uint32_t sum=0xF1BBCDC8, i;                    /* set up */
 189     uint32_t delta=0x9E3779B9;                     /* a key schedule constant */
 190     uint32_t k0=k[0], k1=k[1], k2=k[2], k3=k[3];   /* cache key */
 191     for(i=0; i<8; i++) {                               /* basic cycle start */
 192         *v1 -= ((*v0<<4) + k2) ^ (*v0 + sum) ^ ((*v0>>5) + k3);
 193         *v0 -= ((*v1<<4) + k0) ^ (*v1 + sum) ^ ((*v1>>5) + k1);
 194         sum -= delta;                                   /* end cycle */
 195     }
 196 }
 197
 198 /* mi4 files are encrypted in 64-bit blocks (two little-endian 32-bit
 199    integers) and the key is incremented after each block
 200  */
 201
 202 static void tea_decrypt_buf(unsigned char* src, unsigned char* dest, size_t n, uint32_t * key)
 203 {
 204     uint32_t v0, v1;
 205     unsigned int i;
 206
 207     for (i = 0; i < (n / 8); i++) {
 208         v0 = le2int(src);
 209         v1 = le2int(src+4);
 210
 211         tea_decrypt(&v0, &v1, key);
 212
 213         int2le(v0, dest);
 214         int2le(v1, dest+4);
 215
 216         src += 8;
 217         dest += 8;
 218
 219         /* Now increment the key */
 220         key[0]++;
 221         if (key[0]==0) {
 222             key[1]++;
 223             if (key[1]==0) {
 224                 key[2]++;
 225                 if (key[2]==0) {
 226                     key[3]++;
 227                 }
 228             }
 229         }
 230     }
 231 }
 232
 233 static inline bool tea_test_key(unsigned char magic_enc[8], uint32_t * key, int unaligned)
 234 {
 235     unsigned char magic_dec[8];
 236     tea_decrypt_buf(magic_enc, magic_dec, 8, key);
 237
 238     return (le2int(&magic_dec[4*unaligned]) == 0xaa55aa55);
 239 }
 240
 241 static int tea_find_key(struct mi4header_t *mi4header, int fd)
 242 {
 243     unsigned int i;
 244     int rc;
 245     unsigned int j;
 246     uint32_t key[4];
 247     unsigned char magic_enc[8];
 248     int key_found = -1;
 249     unsigned int magic_location = mi4header->length-4;
 250     int unaligned = 0;
 251
 252     if ( (magic_location % 8) != 0 )
 253     {
 254         unaligned = 1;
 255         magic_location -= 4;
 256     }
 257
 258     /* Load encrypted magic 0xaa55aa55 to check key */
 259     lseek(fd, MI4_HEADER_SIZE + magic_location, SEEK_SET);
 260     rc = read(fd, magic_enc, 8);
 261     if(rc < 8 )
 262         return EREAD_IMAGE_FAILED;
 263
 264     printf("Searching for key:");
 265
 266     for (i=0; i < NUM_KEYS && (key_found<0) ; i++) {
 267         key[0] = tea_keytable[i].key[0];
 268         key[1] = tea_keytable[i].key[1];
 269         key[2] = tea_keytable[i].key[2];
 270         key[3] = tea_keytable[i].key[3];
 271
 272         /* Now increment the key */
 273         for(j=0; j<((magic_location-mi4header->plaintext)/8); j++){
 274             key[0]++;
 275             if (key[0]==0) {
 276                 key[1]++;
 277                 if (key[1]==0) {
 278                     key[2]++;
 279                     if (key[2]==0) {
 280                         key[3]++;
 281                     }
 282                 }
 283             }
 284         }
 285
 286         if (tea_test_key(magic_enc,key,unaligned))
 287         {
 288             key_found = i;
 289             printf("%s...found", tea_keytable[i].name);
 290         } else {
 291            /* printf("%s...failed", tea_keytable[i].name); */
 292         }
 293     }
 294
 295     return key_found;
 296 }
 297
 298
 299 /* Load mi4 format firmware image */
 300 int load_mi4(unsigned char* buf, char* firmware, unsigned int buffer_size)
 301 {
 302     int fd;
 303     struct mi4header_t mi4header;
 304     int rc;
 305     unsigned long sum;
 306     char filename[MAX_PATH];
 307
 308     snprintf(filename,sizeof(filename), BOOTDIR "/%s",firmware);
 309     fd = open(filename, O_RDONLY);
 310     if(fd < 0)
 311     {
 312         snprintf(filename,sizeof(filename),"/%s",firmware);
 313         fd = open(filename, O_RDONLY);
 314         if(fd < 0)
 315             return EFILE_NOT_FOUND;
 316     }
 317
 318     read(fd, &mi4header, MI4_HEADER_SIZE);
 319
 320     /* MI4 file size */
 321     printf("mi4 size: %x", mi4header.mi4size);
 322
 323     if ((mi4header.mi4size-MI4_HEADER_SIZE) > buffer_size)
 324         return EFILE_TOO_BIG;
 325
 326     /* CRC32 */
 327     printf("CRC32: %x", mi4header.crc32);
 328
 329     /* Rockbox model id */
 330     printf("Model id: %.4s", mi4header.model);
 331
 332     /* Read binary type (RBOS, RBBL) */
 333     printf("Binary type: %.4s", mi4header.type);
 334
 335     /* Load firmware file */
 336     lseek(fd, MI4_HEADER_SIZE, SEEK_SET);
 337     rc = read(fd, buf, mi4header.mi4size-MI4_HEADER_SIZE);
 338     if(rc < (int)mi4header.mi4size-MI4_HEADER_SIZE)
 339         return EREAD_IMAGE_FAILED;
 340
 341     /* Check CRC32 to see if we have a valid file */
 342     sum = chksum_crc32 (buf, mi4header.mi4size - MI4_HEADER_SIZE);
 343
 344     printf("Calculated CRC32: %x", sum);
 345
 346     if(sum != mi4header.crc32)
 347         return EBAD_CHKSUM;
 348
 349     if( (mi4header.plaintext + MI4_HEADER_SIZE) != mi4header.mi4size)
 350     {
 351         /* Load encrypted firmware */
 352         int key_index = tea_find_key(&mi4header, fd);
 353
 354         if (key_index < 0)
 355             return EINVALID_FORMAT;
 356
 357         /* Plaintext part is already loaded */
 358         buf += mi4header.plaintext;
 359
 360         /* Decrypt in-place */
 361         tea_decrypt_buf(buf, buf,
 362                         mi4header.mi4size-(mi4header.plaintext+MI4_HEADER_SIZE),
 363                         tea_keytable[key_index].key);
 364
 365         printf("%s key used", tea_keytable[key_index].name);
 366
 367         /* Check decryption was successfull */
 368         if(le2int(&buf[mi4header.length-mi4header.plaintext-4]) != 0xaa55aa55)
 369         {
 370             return EREAD_IMAGE_FAILED;
 371         }
 372     }
 373
 374     return EOK;
 375 }
 376
 377 #if (CONFIG_STORAGE & STORAGE_SD)
 378 /* Load mi4 firmware from a hidden disk partition */
 379 int load_mi4_part(unsigned char* buf, struct partinfo* pinfo,
 380                   unsigned int buffer_size, bool disable_rebuild)
 381 {
 382     struct mi4header_t mi4header;
 383     struct ppmi_header_t ppmi_header;
 384     unsigned long sum;
 385
 386     /* Read header to find out how long the mi4 file is. */
 387     storage_read_sectors(0, pinfo->start + PPMI_SECTOR_OFFSET,
 388                             PPMI_SECTORS, &ppmi_header);
 389
 390     /* The first four characters at 0x80000 (sector 1024) should be PPMI*/
 391     if( memcmp(ppmi_header.magic, "PPMI", 4) )
 392         return EFILE_NOT_FOUND;
 393
 394     printf("BL mi4 size: %x", ppmi_header.length);
 395
 396     /* Read mi4 header of the OF */
 397     storage_read_sectors(0, pinfo->start + PPMI_SECTOR_OFFSET + PPMI_SECTORS
 398                        + (ppmi_header.length/512), MI4_HEADER_SECTORS, &mi4header);
 399
 400     /* We don't support encrypted mi4 files yet */
 401     if( (mi4header.plaintext) != (mi4header.mi4size-MI4_HEADER_SIZE))
 402         return EINVALID_FORMAT;
 403
 404     /* MI4 file size */
 405     printf("OF mi4 size: %x", mi4header.mi4size);
 406
 407     if ((mi4header.mi4size-MI4_HEADER_SIZE) > buffer_size)
 408         return EFILE_TOO_BIG;
 409
 410     /* CRC32 */
 411     printf("CRC32: %x", mi4header.crc32);
 412
 413     /* Rockbox model id */
 414     printf("Model id: %.4s", mi4header.model);
 415
 416     /* Read binary type (RBOS, RBBL) */
 417     printf("Binary type: %.4s", mi4header.type);
 418
 419     /* Load firmware */
 420     storage_read_sectors(0, pinfo->start + PPMI_SECTOR_OFFSET + PPMI_SECTORS
 421                         + (ppmi_header.length/512) + MI4_HEADER_SECTORS,
 422                         (mi4header.mi4size-MI4_HEADER_SIZE)/512, buf);
 423
 424     /* Check CRC32 to see if we have a valid file */
 425     sum = chksum_crc32 (buf,mi4header.mi4size-MI4_HEADER_SIZE);
 426
 427     printf("Calculated CRC32: %x", sum);
 428
 429     if(sum != mi4header.crc32)
 430         return EBAD_CHKSUM;
 431
 432 #ifdef SANSA_E200
 433     if (disable_rebuild)
 434     {
 435         char block[512];
 436
 437         printf("Disabling database rebuild");
 438
 439         storage_read_sectors(0, pinfo->start + 0x3c08, 1, block);
 440         block[0xe1] = 0;
 441         storage_write_sectors(0, pinfo->start + 0x3c08, 1, block);
 442     }
 443 #else
 444     (void) disable_rebuild;
 445 #endif
 446
 447     return EOK;
 448 }
 449 #endif
 450
 451 void* main(void)
 452 {
 453     int i;
 454     int btn;
 455     int rc;
 456     int num_partitions;
 457     struct partinfo* pinfo;
 458 #if defined(SANSA_E200) || defined(SANSA_C200) || defined(PHILIPS_SA9200) \
 459     || defined (SANSA_VIEW)
 460 #if !defined(USE_ROCKBOX_USB)
 461     int usb_retry = 0;
 462 #endif
 463     bool usb = false;
 464 #else
 465     char buf[256];
 466     unsigned short* identify_info;
 467 #endif
 468
 469     chksum_crc32gentab ();
 470
 471     system_init();
 472     kernel_init();
 473
 474     lcd_init();
 475
 476     font_init();
 477     show_logo();
 478
 479     adc_init();
 480     button_init();
 481 #if defined(SANSA_E200) || defined(PHILIPS_SA9200)
 482     i2c_init();
 483     _backlight_on();
 484 #endif
 485
 486     if (button_hold())
 487     {
 488         verbose = true;
 489         lcd_clear_display();
 490         printf("Hold switch on");
 491         printf("Shutting down...");
 492         sleep(HZ);
 493         power_off();
 494     }
 495
 496     btn = button_read_device();
 497
 498     /* Enable bootloader messages if any button is pressed */
 499     if (btn) {
 500         lcd_clear_display();
 501         verbose = true;
 502     }
 503
 504 #if defined(SANSA_E200) || defined(SANSA_C200) || defined(PHILIPS_SA9200)
 505 #if !defined(USE_ROCKBOX_USB)
 506     usb_init();
 507     while (usb_drv_powered() && usb_retry < 5 && !usb)
 508     {
 509         usb_retry++;
 510         sleep(HZ/4);
 511         usb = (usb_detect() == USB_INSERTED);
 512     }
 513     if (usb)
 514         btn |= BOOTLOADER_BOOT_OF;
 515 #endif /* USE_ROCKBOX_USB */
 516 #endif
 517
 518     lcd_setfont(FONT_SYSFIXED);
 519
 520     printf("Rockbox boot loader");
 521     printf("Version: %s", version);
 522     printf(MODEL_NAME);
 523
 524     i=storage_init();
 525 #if !(CONFIG_STORAGE & STORAGE_SD)
 526     if (i==0) {
 527         identify_info=ata_get_identify();
 528         /* Show model */
 529         for (i=0; i < 20; i++) {
 530             ((unsigned short*)buf)[i]=htobe16(identify_info[i+27]);
 531         }
 532         buf[40]=0;
 533         for (i=39; i && buf[i]==' '; i--) {
 534             buf[i]=0;
 535         }
 536         printf(buf);
 537     } else {
 538         error(EATA, i);
 539     }
 540 #endif
 541
 542     disk_init(IF_MV(0));
 543     num_partitions = disk_mount_all();
 544     if (num_partitions<=0)
 545     {
 546         error(EDISK,num_partitions);
 547     }
 548
 549     /* Just list the first 2 partitions since we don't have any devices yet
 550        that have more than that */
 551     for(i=0; i<NUM_PARTITIONS; i++)
 552     {
 553         pinfo = disk_partinfo(i);
 554         printf("Partition %d: 0x%02x %ld MB",
 555                 i, pinfo->type, pinfo->size / 2048);
 556     }
 557
 558     /* Try loading Rockbox, if that fails, fall back to the OF */
 559     if((btn & BOOTLOADER_BOOT_OF) == 0)
 560     {
 561         printf("Loading Rockbox...");
 562         rc = load_mi4(loadbuffer, BOOTFILE, MAX_LOADSIZE);
 563         if (rc < EOK)
 564         {
 565             bool old_verbose = verbose;
 566             verbose = true;
 567             printf("Can't load " BOOTFILE ": ");
 568             printf(strerror(rc));
 569             verbose = old_verbose;
 570             btn |= BOOTLOADER_BOOT_OF;
 571             sleep(5*HZ);
 572         }
 573         else
 574             return (void*)loadbuffer;
 575     }
 576
 577     if(btn & BOOTLOADER_BOOT_OF)
 578     {
 579         /* Load original mi4 firmware in to a memory buffer called loadbuffer.
 580            The rest of the loading is done in crt0.S.
 581            1) First try reading from the hidden partition (on Sansa only).
 582            2) Next try a decrypted mi4 file in /System/OF.mi4
 583            3) Finally, try a raw firmware binary in /System/OF.bin. It should be
 584               a mi4 firmware decrypted and header stripped using mi4code.
 585         */
 586         printf("Loading original firmware...");
 587
 588 #if (CONFIG_STORAGE & STORAGE_SD)
 589         /* First try a (hidden) firmware partition */
 590         printf("Trying firmware partition");
 591         pinfo = disk_partinfo(1);
 592         if(pinfo->type == PARTITION_TYPE_OS2_HIDDEN_C_DRIVE)
 593         {
 594             rc = load_mi4_part(loadbuffer, pinfo, MAX_LOADSIZE, usb);
 595             if (rc < EOK) {
 596                 printf("Can't load from partition");
 597                 printf(strerror(rc));
 598             } else {
 599                 return (void*)loadbuffer;
 600             }
 601         } else {
 602             printf("No hidden partition found.");
 603         }
 604 #endif
 605
 606 #if defined(PHILIPS_HDD1630)
 607         printf("Trying /System/OF.ebn");
 608         rc=load_mi4(loadbuffer, "/System/OF.ebn", MAX_LOADSIZE);
 609         if (rc < EOK) {
 610             printf("Can't load /System/OF.ebn");
 611             printf(strerror(rc));
 612         } else {
 613             return (void*)loadbuffer;
 614         }
 615 #endif
 616
 617         printf("Trying /System/OF.mi4");
 618         rc=load_mi4(loadbuffer, "/System/OF.mi4", MAX_LOADSIZE);
 619         if (rc < EOK) {
 620             printf("Can't load /System/OF.mi4");
 621             printf(strerror(rc));
 622         } else {
 623 #if defined(SAMSUNG_YH925)
 624             lcd_reset();
 625 #endif
 626             return (void*)loadbuffer;
 627         }
 628
 629         printf("Trying /System/OF.bin");
 630         rc=load_raw_firmware(loadbuffer, "/System/OF.bin", MAX_LOADSIZE);
 631         if (rc < EOK) {
 632             printf("Can't load /System/OF.bin");
 633             printf(strerror(rc));
 634         } else {
 635 #if defined(SAMSUNG_YH925)
 636             lcd_reset();
 637 #endif
 638             return (void*)loadbuffer;
 639         }
 640
 641         error(0, 0);
 642     }
 643     return (void*)loadbuffer;
 644 }