LXR linux/scripts/dtc/libfdt/fdt

   1/*
   2 * libfdt - Flat Device Tree manipulation
   3 * Copyright (C) 2006 David Gibson, IBM Corporation.
   4 *
   5 * libfdt is dual licensed: you can use it either under the terms of
   6 * the GPL, or the BSD license, at your option.
   7 *
   8 *  a) This library is free software; you can redistribute it and/or
   9 *     modify it under the terms of the GNU General Public License as
  10 *     published by the Free Software Foundation; either version 2 of the
  11 *     License, or (at your option) any later version.
  12 *
  13 *     This library is distributed in the hope that it will be useful,
  14 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 *     GNU General Public License for more details.
  17 *
  18 *     You should have received a copy of the GNU General Public
  19 *     License along with this library; if not, write to the Free
  20 *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  21 *     MA 02110-1301 USA
  22 *
  23 * Alternatively,
  24 *
  25 *  b) Redistribution and use in source and binary forms, with or
  26 *     without modification, are permitted provided that the following
  27 *     conditions are met:
  28 *
  29 *     1. Redistributions of source code must retain the above
  30 *        copyright notice, this list of conditions and the following
  31 *        disclaimer.
  32 *     2. Redistributions in binary form must reproduce the above
  33 *        copyright notice, this list of conditions and the following
  34 *        disclaimer in the documentation and/or other materials
  35 *        provided with the distribution.
  36 *
  37 *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  38 *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  39 *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  40 *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  41 *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  42 *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  43 *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  44 *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  45 *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  46 *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  47 *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  48 *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  49 *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  50 */
  51#include "libfdt_env.h"
  52
  53#include <fdt.h>
  54#include <libfdt.h>
  55
  56#include "libfdt_internal.h"
  57
  58struct fdt_errtabent {
  59        const char *str;
  60};
  61
  62#define FDT_ERRTABENT(val) \
  63        [(val)] = { .str = #val, }
  64
  65static struct fdt_errtabent fdt_errtable[] = {
  66        FDT_ERRTABENT(FDT_ERR_NOTFOUND),
  67        FDT_ERRTABENT(FDT_ERR_EXISTS),
  68        FDT_ERRTABENT(FDT_ERR_NOSPACE),
  69
  70        FDT_ERRTABENT(FDT_ERR_BADOFFSET),
  71        FDT_ERRTABENT(FDT_ERR_BADPATH),
  72        FDT_ERRTABENT(FDT_ERR_BADSTATE),
  73
  74        FDT_ERRTABENT(FDT_ERR_TRUNCATED),
  75        FDT_ERRTABENT(FDT_ERR_BADMAGIC),
  76        FDT_ERRTABENT(FDT_ERR_BADVERSION),
  77        FDT_ERRTABENT(FDT_ERR_BADSTRUCTURE),
  78        FDT_ERRTABENT(FDT_ERR_BADLAYOUT),
  79};
  80#define FDT_ERRTABSIZE  (sizeof(fdt_errtable) / sizeof(fdt_errtable[0]))
  81
  82const char *fdt_strerror(int errval)
  83{
  84        if (errval > 0)
  85                return "<valid offset/length>";
  86        else if (errval == 0)
  87                return "<no error>";
  88        else if (errval > -FDT_ERRTABSIZE) {
  89                const char *s = fdt_errtable[-errval].str;
  90
  91                if (s)
  92                        return s;
  93        }
  94
  95        return "<unknown error>";
  96}
  97