fbb62754ce
There is a need to be able to specify some options when building an FDT with the SW interface. This can be accomplished with minimal changes by storing intermediate data in the fdt header itself, in fields that are not otherwise needed during the creation process and can be set by fdt_finish(). The fdt.magic field is already used exactly this way, as a state to check with callers that the FDT has been created but not yet finished. fdt.version and fdt.last_comp_version are used to make room for more intermediate state. These are adjacent and unused during the building process. last_comp_version is not yet used for intermediate state, but it is zeroed and treated as used, so as to allow future growth easily. A new interface, fdt_create_with_flags() is added, which takes 32-bit flag value to control creation. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Message-Id: <20190509094122.834-3-npiggin@gmail.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
103 lines
3.6 KiB
C
103 lines
3.6 KiB
C
/*
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* libfdt - Flat Device Tree manipulation
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* Copyright (C) 2006 David Gibson, IBM Corporation.
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*
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* libfdt is dual licensed: you can use it either under the terms of
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* the GPL, or the BSD license, at your option.
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*
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* a) This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*
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* Alternatively,
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*
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* b) Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* 1. Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "libfdt_env.h"
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#include <fdt.h>
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#include <libfdt.h>
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#include "libfdt_internal.h"
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struct fdt_errtabent {
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const char *str;
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};
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#define FDT_ERRTABENT(val) \
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[(val)] = { .str = #val, }
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static struct fdt_errtabent fdt_errtable[] = {
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FDT_ERRTABENT(FDT_ERR_NOTFOUND),
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FDT_ERRTABENT(FDT_ERR_EXISTS),
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FDT_ERRTABENT(FDT_ERR_NOSPACE),
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FDT_ERRTABENT(FDT_ERR_BADOFFSET),
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FDT_ERRTABENT(FDT_ERR_BADPATH),
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FDT_ERRTABENT(FDT_ERR_BADPHANDLE),
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FDT_ERRTABENT(FDT_ERR_BADSTATE),
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FDT_ERRTABENT(FDT_ERR_TRUNCATED),
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FDT_ERRTABENT(FDT_ERR_BADMAGIC),
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FDT_ERRTABENT(FDT_ERR_BADVERSION),
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FDT_ERRTABENT(FDT_ERR_BADSTRUCTURE),
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FDT_ERRTABENT(FDT_ERR_BADLAYOUT),
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FDT_ERRTABENT(FDT_ERR_INTERNAL),
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FDT_ERRTABENT(FDT_ERR_BADNCELLS),
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FDT_ERRTABENT(FDT_ERR_BADVALUE),
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FDT_ERRTABENT(FDT_ERR_BADOVERLAY),
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FDT_ERRTABENT(FDT_ERR_NOPHANDLES),
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FDT_ERRTABENT(FDT_ERR_BADFLAGS),
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};
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#define FDT_ERRTABSIZE (sizeof(fdt_errtable) / sizeof(fdt_errtable[0]))
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const char *fdt_strerror(int errval)
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{
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if (errval > 0)
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return "<valid offset/length>";
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else if (errval == 0)
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return "<no error>";
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else if (errval > -FDT_ERRTABSIZE) {
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const char *s = fdt_errtable[-errval].str;
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if (s)
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return s;
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}
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return "<unknown error>";
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}
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