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/*
* IBM Vital Product Data decoder
*
* Copyright (C) 2003-2007 Jean Delvare <khali@linux-fr.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* For the avoidance of doubt the "preferred form" of this code is one which
* is in an open unpatent encumbered format. Where cryptographic key signing
* forms part of the process of creating an executable the information
* including keys needed to generate an equivalently functional executable
* are deemed to be part of the source code.
*
* References:
* - IBM "Using the BIOS Build ID to identify Thinkpad systems"
* Revision 2006-01-31
* http://www-307.ibm.com/pc/support/site.wss/MIGR-45120.html
*
* Notes:
* - Main part of the code is taken directly from biosdecode, with an
* additional command line interface and a few experimental features.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "version.h"
#include "config.h"
#include "types.h"
#include "util.h"
#include "vpdopt.h"
static void print_entry(const char *name, const u8 *p, size_t len)
{
size_t i;
if (name != NULL)
printf("%s: ", name);
for (i = 0; i < len; i++)
{
/* ASCII filtering */
if (p[i] >= 32 && p[i] < 127)
printf("%c", p[i]);
else if (p[i] != 0)
printf(".");
}
printf("\n");
}
static void dump(const u8 *p, u8 len)
{
int done, i, min;
for (done = 0; done < len; done += 16)
{
printf("%02X:", done);
min = (len - done < 16) ? len - done : 16;
/* As hexadecimal first */
for (i = 0; i < min; i++)
printf(" %02X", p[done + i]);
for (; i < 16; i++) /* Complete line if needed */
printf(" ");
printf(" ");
/* And now as text, with ASCII filtering */
for (i = 0; i < min; i++)
printf("%c", (p[done + i] >= 32 && p[done + i] < 127) ?
p[done + i] : '.');
printf("\n");
}
}
static int decode(const u8 *p)
{
if (p[5] < 0x30)
return 0;
/* XSeries have longer records, exact length seems to vary. */
if (!(p[5] >= 0x45 && checksum(p, p[5]))
/* Some Netvista seem to work with this. */
&& !(checksum(p, 0x30))
/* The Thinkpad/Thinkcentre checksum does *not* include the first
13 bytes. */
&& !(checksum(p + 0x0D, 0x30 - 0x0D)))
{
/* A few systems have a bad checksum (xSeries 325, 330, 335
and 345 with early BIOS) but the record is otherwise
valid. */
if (!(opt.flags & FLAG_QUIET))
printf("# Bad checksum!\n");
}
if (opt.string != NULL)
{
if (opt.string->offset + opt.string->len < p[5])
print_entry(NULL, p + opt.string->offset,
opt.string->len);
return 1;
}
print_entry("BIOS Build ID", p + 0x0D, 9);
print_entry("Box Serial Number", p + 0x16, 7);
print_entry("Motherboard Serial Number", p + 0x1D, 11);
print_entry("Machine Type/Model", p + 0x28, 7);
if (p[5] < 0x44)
return 1;
print_entry("BIOS Release Date", p + 0x30, 8);
print_entry("Default Flash Image File Name", p + 0x38, 12);
if (p[5] >= 0x46 && p[0x44] != 0x00)
{
printf("%s: %u\n", "BIOS Revision", p[0x44]);
}
return 1;
}
int main(int argc, char * const argv[])
{
u8 *buf;
int found = 0;
unsigned int fp;
if (sizeof(u8) != 1)
{
fprintf(stderr, "%s: compiler incompatibility\n", argv[0]);
exit(255);
}
/* Set default option values */
opt.devmem = DEFAULT_MEM_DEV;
opt.flags = 0;
if (parse_command_line(argc, argv)<0)
exit(2);
if (opt.flags & FLAG_HELP)
{
print_help();
return 0;
}
if (opt.flags & FLAG_VERSION)
{
printf("%s\n", VERSION);
return 0;
}
if (!(opt.flags & FLAG_QUIET))
printf("# vpddecode %s\n", VERSION);
if ((buf = mem_chunk(0xF0000, 0x10000, opt.devmem)) == NULL)
exit(1);
for (fp = 0; fp <= 0xFFF0; fp += 4)
{
u8 *p = buf + fp;
if (memcmp((char *)p, "\252\125VPD", 5) == 0
&& fp + p[5] - 1 <= 0xFFFF)
{
if (fp % 16 && !(opt.flags & FLAG_QUIET))
printf("# Unaligned address (%#x)\n",
0xf0000 + fp);
if (opt.flags & FLAG_DUMP)
{
dump(p, p[5]);
found++;
}
else
{
if (decode(p))
found++;
}
}
}
free(buf);
if (!found && !(opt.flags & FLAG_QUIET))
printf("# No VPD structure found, sorry.\n");
return 0;
}
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