baseport/syborg/svpplatform/libfdt/fdt_rw.c
author William Roberts <williamr@symbian.org>
Tue, 04 Aug 2009 10:28:23 +0100
changeset 2 d55eb581a87c
parent 0 baseport/src/cedar/generic/base/syborg/svpplatform/libfdt/fdt_rw.c@ffa851df0825
permissions -rw-r--r--
Move syborg baseport from old src/cedar/generic layout to baseport/syborg
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/*
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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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static int _blocks_misordered(const void *fdt,
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			      int mem_rsv_size, int struct_size)
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{
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	return (fdt_off_mem_rsvmap(fdt) < ALIGN(sizeof(struct fdt_header), 8))
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		|| (fdt_off_dt_struct(fdt) <
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		    (fdt_off_mem_rsvmap(fdt) + mem_rsv_size))
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		|| (fdt_off_dt_strings(fdt) <
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		    (fdt_off_dt_struct(fdt) + struct_size))
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		|| (fdt_totalsize(fdt) <
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		    (fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt)));
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}
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static int rw_check_header(void *fdt)
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{
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	int err;
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	if ((err = fdt_check_header(fdt)))
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		return err;
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	if (fdt_version(fdt) < 17)
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		return -FDT_ERR_BADVERSION;
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	if (_blocks_misordered(fdt, sizeof(struct fdt_reserve_entry),
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			       fdt_size_dt_struct(fdt)))
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		return -FDT_ERR_BADLAYOUT;
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	if (fdt_version(fdt) > 17)
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		fdt_set_version(fdt, 17);
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	return 0;
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}
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#define RW_CHECK_HEADER(fdt) \
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	{ \
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		int err; \
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		if ((err = rw_check_header(fdt)) != 0) \
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			return err; \
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	}
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static inline int _blob_data_size(void *fdt)
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{
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	return fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
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}
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static int _blob_splice(void *fdt, void *p, int oldlen, int newlen)
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{
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	void *end = fdt + _blob_data_size(fdt);
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	if (((p + oldlen) < p) || ((p + oldlen) > end))
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		return -FDT_ERR_BADOFFSET;
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	if ((end - oldlen + newlen) > (fdt + fdt_totalsize(fdt)))
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		return -FDT_ERR_NOSPACE;
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	memmove(p + newlen, p + oldlen, end - p - oldlen);
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	return 0;
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}
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static int _blob_splice_mem_rsv(void *fdt, struct fdt_reserve_entry *p,
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				int oldn, int newn)
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{
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	int delta = (newn - oldn) * sizeof(*p);
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	int err;
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	err = _blob_splice(fdt, p, oldn * sizeof(*p), newn * sizeof(*p));
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	if (err)
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		return err;
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	fdt_set_off_dt_struct(fdt, fdt_off_dt_struct(fdt) + delta);
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	fdt_set_off_dt_strings(fdt, fdt_off_dt_strings(fdt) + delta);
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	return 0;
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}
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static int _blob_splice_struct(void *fdt, void *p,
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			       int oldlen, int newlen)
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{
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	int delta = newlen - oldlen;
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	int err;
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	if ((err = _blob_splice(fdt, p, oldlen, newlen)))
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		return err;
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	fdt_set_size_dt_struct(fdt, fdt_size_dt_struct(fdt) + delta);
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	fdt_set_off_dt_strings(fdt, fdt_off_dt_strings(fdt) + delta);
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	return 0;
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}
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static int _blob_splice_string(void *fdt, int newlen)
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{
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	void *p = fdt + fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
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	int err;
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	if ((err = _blob_splice(fdt, p, 0, newlen)))
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		return err;
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	fdt_set_size_dt_strings(fdt, fdt_size_dt_strings(fdt) + newlen);
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	return 0;
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}
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static int _find_add_string(void *fdt, const char *s)
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{
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	char *strtab = (char *)fdt + fdt_off_dt_strings(fdt);
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	const char *p;
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	char *new;
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	int len = strlen(s) + 1;
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	int err;
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	p = _fdt_find_string(strtab, fdt_size_dt_strings(fdt), s);
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	if (p)
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		/* found it */
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		return (p - strtab);
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	new = strtab + fdt_size_dt_strings(fdt);
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	err = _blob_splice_string(fdt, len);
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	if (err)
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		return err;
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	memcpy(new, s, len);
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	return (new - strtab);
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}
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int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size)
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{
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	struct fdt_reserve_entry *re;
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	int err;
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	if ((err = rw_check_header(fdt)))
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		return err;
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	re = _fdt_mem_rsv_w(fdt, fdt_num_mem_rsv(fdt));
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	err = _blob_splice_mem_rsv(fdt, re, 0, 1);
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	if (err)
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		return err;
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	re->address = cpu_to_fdt64(address);
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	re->size = cpu_to_fdt64(size);
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	return 0;
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}
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int fdt_del_mem_rsv(void *fdt, int n)
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{
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	struct fdt_reserve_entry *re = _fdt_mem_rsv_w(fdt, n);
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	int err;
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	if ((err = rw_check_header(fdt)))
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		return err;
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	if (n >= fdt_num_mem_rsv(fdt))
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		return -FDT_ERR_NOTFOUND;
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	err = _blob_splice_mem_rsv(fdt, re, 1, 0);
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	if (err)
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		return err;
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	return 0;
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}
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static int _resize_property(void *fdt, int nodeoffset, const char *name, int len,
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			    struct fdt_property **prop)
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{
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	int oldlen;
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	int err;
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	*prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);
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	if (! (*prop))
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		return oldlen;
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	if ((err = _blob_splice_struct(fdt, (*prop)->data,
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				       ALIGN(oldlen, FDT_TAGSIZE),
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				       ALIGN(len, FDT_TAGSIZE))))
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		return err;
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	(*prop)->len = cpu_to_fdt32(len);
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	return 0;
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}
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static int _add_property(void *fdt, int nodeoffset, const char *name, int len,
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			 struct fdt_property **prop)
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{
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	uint32_t tag;
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	int proplen;
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	int nextoffset;
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   231
	int namestroff;
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   232
	int err;
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   233
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	tag = fdt_next_tag(fdt, nodeoffset, &nextoffset);
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   235
	if (tag != FDT_BEGIN_NODE)
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		return -FDT_ERR_BADOFFSET;
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   237
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	namestroff = _find_add_string(fdt, name);
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   239
	if (namestroff < 0)
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		return namestroff;
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	*prop = _fdt_offset_ptr_w(fdt, nextoffset);
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	proplen = sizeof(**prop) + ALIGN(len, FDT_TAGSIZE);
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	err = _blob_splice_struct(fdt, *prop, 0, proplen);
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   246
	if (err)
ffa851df0825 Initial syborg (baseport) and documentation import
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   247
		return err;
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	(*prop)->tag = cpu_to_fdt32(FDT_PROP);
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	(*prop)->nameoff = cpu_to_fdt32(namestroff);
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   251
	(*prop)->len = cpu_to_fdt32(len);
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   252
	return 0;
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   253
}
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   254
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int fdt_set_name(void *fdt, int nodeoffset, const char *name)
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{
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	char *namep;
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   258
	int oldlen, newlen;
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   259
	int err;
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   260
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	if ((err = rw_check_header(fdt)))
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   262
		return err;
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   263
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   264
	namep = (char *)fdt_get_name(fdt, nodeoffset, &oldlen);
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   265
	if (!namep)
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   266
		return oldlen;
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   267
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	newlen = strlen(name);
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   269
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	err = _blob_splice_struct(fdt, namep, ALIGN(oldlen+1, FDT_TAGSIZE),
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				  ALIGN(newlen+1, FDT_TAGSIZE));
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   272
	if (err)
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		return err;
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   274
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	memcpy(namep, name, newlen+1);
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   276
	return 0;
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   277
}
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   278
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int fdt_setprop(void *fdt, int nodeoffset, const char *name,
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		const void *val, int len)
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{
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	struct fdt_property *prop;
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   283
	int err;
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   284
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	if ((err = rw_check_header(fdt)))
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   286
		return err;
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   287
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	err = _resize_property(fdt, nodeoffset, name, len, &prop);
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   289
	if (err == -FDT_ERR_NOTFOUND)
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   290
		err = _add_property(fdt, nodeoffset, name, len, &prop);
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   291
	if (err)
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   292
		return err;
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   293
ffa851df0825 Initial syborg (baseport) and documentation import
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   294
	memcpy(prop->data, val, len);
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   295
	return 0;
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   296
}
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   297
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int fdt_delprop(void *fdt, int nodeoffset, const char *name)
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   299
{
ffa851df0825 Initial syborg (baseport) and documentation import
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parents:
diff changeset
   300
	struct fdt_property *prop;
ffa851df0825 Initial syborg (baseport) and documentation import
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parents:
diff changeset
   301
	int len, proplen;
ffa851df0825 Initial syborg (baseport) and documentation import
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parents:
diff changeset
   302
ffa851df0825 Initial syborg (baseport) and documentation import
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parents:
diff changeset
   303
	RW_CHECK_HEADER(fdt);
ffa851df0825 Initial syborg (baseport) and documentation import
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parents:
diff changeset
   304
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   305
	prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
ffa851df0825 Initial syborg (baseport) and documentation import
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parents:
diff changeset
   306
	if (! prop)
ffa851df0825 Initial syborg (baseport) and documentation import
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parents:
diff changeset
   307
		return len;
ffa851df0825 Initial syborg (baseport) and documentation import
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parents:
diff changeset
   308
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   309
	proplen = sizeof(*prop) + ALIGN(len, FDT_TAGSIZE);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   310
	return _blob_splice_struct(fdt, prop, proplen, 0);
ffa851df0825 Initial syborg (baseport) and documentation import
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parents:
diff changeset
   311
}
ffa851df0825 Initial syborg (baseport) and documentation import
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parents:
diff changeset
   312
ffa851df0825 Initial syborg (baseport) and documentation import
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parents:
diff changeset
   313
int fdt_add_subnode_namelen(void *fdt, int parentoffset,
ffa851df0825 Initial syborg (baseport) and documentation import
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parents:
diff changeset
   314
			    const char *name, int namelen)
ffa851df0825 Initial syborg (baseport) and documentation import
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parents:
diff changeset
   315
{
ffa851df0825 Initial syborg (baseport) and documentation import
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parents:
diff changeset
   316
	struct fdt_node_header *nh;
ffa851df0825 Initial syborg (baseport) and documentation import
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parents:
diff changeset
   317
	int offset, nextoffset;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   318
	int nodelen;
ffa851df0825 Initial syborg (baseport) and documentation import
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parents:
diff changeset
   319
	int err;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   320
	uint32_t tag;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   321
	uint32_t *endtag;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   322
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   323
	RW_CHECK_HEADER(fdt);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   324
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   325
	offset = fdt_subnode_offset_namelen(fdt, parentoffset, name, namelen);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   326
	if (offset >= 0)
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   327
		return -FDT_ERR_EXISTS;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   328
	else if (offset != -FDT_ERR_NOTFOUND)
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   329
		return offset;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   330
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   331
	/* Try to place the new node after the parent's properties */
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   332
	fdt_next_tag(fdt, parentoffset, &nextoffset); /* skip the BEGIN_NODE */
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   333
	do {
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   334
		offset = nextoffset;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   335
		tag = fdt_next_tag(fdt, offset, &nextoffset);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   336
	} while (tag == FDT_PROP);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   337
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   338
	nh = _fdt_offset_ptr_w(fdt, offset);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   339
	nodelen = sizeof(*nh) + ALIGN(namelen+1, FDT_TAGSIZE) + FDT_TAGSIZE;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   340
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   341
	err = _blob_splice_struct(fdt, nh, 0, nodelen);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   342
	if (err)
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   343
		return err;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   344
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   345
	nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   346
	memset(nh->name, 0, ALIGN(namelen+1, FDT_TAGSIZE));
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   347
	memcpy(nh->name, name, namelen);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   348
	endtag = (uint32_t *)((void *)nh + nodelen - FDT_TAGSIZE);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   349
	*endtag = cpu_to_fdt32(FDT_END_NODE);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   350
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   351
	return offset;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   352
}
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   353
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   354
int fdt_add_subnode(void *fdt, int parentoffset, const char *name)
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   355
{
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   356
	return fdt_add_subnode_namelen(fdt, parentoffset, name, strlen(name));
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   357
}
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   358
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   359
int fdt_del_node(void *fdt, int nodeoffset)
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   360
{
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   361
	int endoffset;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   362
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   363
	RW_CHECK_HEADER(fdt);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   364
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   365
	endoffset = _fdt_node_end_offset(fdt, nodeoffset);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   366
	if (endoffset < 0)
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   367
		return endoffset;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   368
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   369
	return _blob_splice_struct(fdt, _fdt_offset_ptr_w(fdt, nodeoffset),
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   370
				   endoffset - nodeoffset, 0);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   371
}
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   372
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   373
static void _packblocks(const void *fdt, void *buf,
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   374
		       int mem_rsv_size, int struct_size)
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   375
{
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   376
	int mem_rsv_off, struct_off, strings_off;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   377
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   378
	mem_rsv_off = ALIGN(sizeof(struct fdt_header), 8);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   379
	struct_off = mem_rsv_off + mem_rsv_size;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   380
	strings_off = struct_off + struct_size;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   381
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   382
	memmove(buf + mem_rsv_off, fdt + fdt_off_mem_rsvmap(fdt), mem_rsv_size);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   383
	fdt_set_off_mem_rsvmap(buf, mem_rsv_off);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   384
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   385
	memmove(buf + struct_off, fdt + fdt_off_dt_struct(fdt), struct_size);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   386
	fdt_set_off_dt_struct(buf, struct_off);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   387
	fdt_set_size_dt_struct(buf, struct_size);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   388
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   389
	memmove(buf + strings_off, fdt + fdt_off_dt_strings(fdt),
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   390
		fdt_size_dt_strings(fdt));
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   391
	fdt_set_off_dt_strings(buf, strings_off);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   392
	fdt_set_size_dt_strings(buf, fdt_size_dt_strings(fdt));
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   393
}
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   394
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   395
int fdt_open_into(const void *fdt, void *buf, int bufsize)
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   396
{
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   397
	int err;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   398
	int mem_rsv_size, struct_size;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   399
	int newsize;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   400
	void *tmp;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   401
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   402
	err = fdt_check_header(fdt);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   403
	if (err)
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   404
		return err;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   405
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   406
	mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   407
		* sizeof(struct fdt_reserve_entry);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   408
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   409
	if (fdt_version(fdt) >= 17) {
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   410
		struct_size = fdt_size_dt_struct(fdt);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   411
	} else {
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   412
		struct_size = 0;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   413
		while (fdt_next_tag(fdt, struct_size, &struct_size) != FDT_END)
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   414
			;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   415
	}
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   416
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   417
	if (!_blocks_misordered(fdt, mem_rsv_size, struct_size)) {
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   418
		/* no further work necessary */
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   419
		err = fdt_move(fdt, buf, bufsize);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   420
		if (err)
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   421
			return err;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   422
		fdt_set_version(buf, 17);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   423
		fdt_set_size_dt_struct(buf, struct_size);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   424
		fdt_set_totalsize(buf, bufsize);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   425
		return 0;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   426
	}
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   427
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   428
	/* Need to reorder */
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   429
	newsize = ALIGN(sizeof(struct fdt_header), 8) + mem_rsv_size
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   430
		+ struct_size + fdt_size_dt_strings(fdt);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   431
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   432
	if (bufsize < newsize)
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   433
		return -FDT_ERR_NOSPACE;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   434
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   435
	if (((buf + newsize) <= fdt)
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   436
	    || (buf >= (fdt + fdt_totalsize(fdt)))) {
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   437
		tmp = buf;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   438
	} else {
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   439
		tmp = (void *)fdt + fdt_totalsize(fdt);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   440
		if ((tmp + newsize) > (buf + bufsize))
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   441
			return -FDT_ERR_NOSPACE;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   442
	}
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   443
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   444
	_packblocks(fdt, tmp, mem_rsv_size, struct_size);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   445
	memmove(buf, tmp, newsize);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   446
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   447
	fdt_set_magic(buf, FDT_MAGIC);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   448
	fdt_set_totalsize(buf, bufsize);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   449
	fdt_set_version(buf, 17);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   450
	fdt_set_last_comp_version(buf, 16);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   451
	fdt_set_boot_cpuid_phys(buf, fdt_boot_cpuid_phys(fdt));
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   452
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   453
	return 0;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   454
}
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   455
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   456
int fdt_pack(void *fdt)
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   457
{
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   458
	int mem_rsv_size;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   459
	int err;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   460
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   461
	err = rw_check_header(fdt);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   462
	if (err)
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   463
		return err;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   464
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   465
	mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   466
		* sizeof(struct fdt_reserve_entry);
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   467
	_packblocks(fdt, fdt, mem_rsv_size, fdt_size_dt_struct(fdt));
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   468
	fdt_set_totalsize(fdt, _blob_data_size(fdt));
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   469
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   470
	return 0;
ffa851df0825 Initial syborg (baseport) and documentation import
martin.trojer@nokia.com
parents:
diff changeset
   471
}