EmbeddedPkg: Rectify file modes

[mirror_edk2.git] / EmbeddedPkg / Library / FdtLib / fdt_wip.c

/*\r
 * libfdt - Flat Device Tree manipulation\r
 * Copyright (C) 2006 David Gibson, IBM Corporation.\r
 *\r
 * libfdt is dual licensed: you can use it either under the terms of\r
 * the GPL, or the BSD license, at your option.\r
 *\r
 *  a) This library is free software; you can redistribute it and/or\r
 *     modify it under the terms of the GNU General Public License as\r
 *     published by the Free Software Foundation; either version 2 of the\r
 *     License, or (at your option) any later version.\r
 *\r
 *     This library is distributed in the hope that it will be useful,\r
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of\r
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
 *     GNU General Public License for more details.\r
 *\r
 *     You should have received a copy of the GNU General Public\r
 *     License along with this library; if not, write to the Free\r
 *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,\r
 *     MA 02110-1301 USA\r
 *\r
 * Alternatively,\r
 *\r
 *  b) Redistribution and use in source and binary forms, with or\r
 *     without modification, are permitted provided that the following\r
 *     conditions are met:\r
 *\r
 *     1. Redistributions of source code must retain the above\r
 *        copyright notice, this list of conditions and the following\r
 *        disclaimer.\r
 *     2. Redistributions in binary form must reproduce the above\r
 *        copyright notice, this list of conditions and the following\r
 *        disclaimer in the documentation and/or other materials\r
 *        provided with the distribution.\r
 *\r
 *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND\r
 *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,\r
 *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF\r
 *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\r
 *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR\r
 *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\r
 *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT\r
 *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;\r
 *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
 *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN\r
 *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR\r
 *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,\r
 *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r
 */\r
#include "libfdt_env.h"\r
\r
#include <fdt.h>\r
#include <libfdt.h>\r
\r
#include "libfdt_internal.h"\r
\r
int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,\r
			const void *val, int len)\r
{\r
	void *propval;\r
	int proplen;\r
\r
	propval = fdt_getprop_w(fdt, nodeoffset, name, &proplen);\r
	if (! propval)\r
		return proplen;\r
\r
	if (proplen != len)\r
		return -FDT_ERR_NOSPACE;\r
\r
	memcpy(propval, val, len);\r
	return 0;\r
}\r
\r
static void _fdt_nop_region(void *start, int len)\r
{\r
	fdt32_t *p;\r
\r
	for (p = start; (char *)p < ((char *)start + len); p++)\r
		*p = cpu_to_fdt32(FDT_NOP);\r
}\r
\r
int fdt_nop_property(void *fdt, int nodeoffset, const char *name)\r
{\r
	struct fdt_property *prop;\r
	int len;\r
\r
	prop = fdt_get_property_w(fdt, nodeoffset, name, &len);\r
	if (! prop)\r
		return len;\r
\r
	_fdt_nop_region(prop, len + sizeof(*prop));\r
\r
	return 0;\r
}\r
\r
int _fdt_node_end_offset(void *fdt, int offset)\r
{\r
	int depth = 0;\r
\r
	while ((offset >= 0) && (depth >= 0))\r
		offset = fdt_next_node(fdt, offset, &depth);\r
\r
	return offset;\r
}\r
\r
int fdt_nop_node(void *fdt, int nodeoffset)\r
{\r
	int endoffset;\r
\r
	endoffset = _fdt_node_end_offset(fdt, nodeoffset);\r
	if (endoffset < 0)\r
		return endoffset;\r
\r
	_fdt_nop_region(fdt_offset_ptr_w(fdt, nodeoffset, 0),\r
			endoffset - nodeoffset);\r
	return 0;\r
}\r