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Annotation of elwix/tools/uboot_mkimage/lib/libfdt/fdt_wip.c, revision 1.1

1.1     ! misho       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: #ifndef USE_HOSTCC
        !            54: #include <fdt.h>
        !            55: #include <libfdt.h>
        !            56: #else
        !            57: #include "fdt_host.h"
        !            58: #endif
        !            59: 
        !            60: #include "libfdt_internal.h"
        !            61: 
        !            62: int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
        !            63:                        const void *val, int len)
        !            64: {
        !            65:        void *propval;
        !            66:        int proplen;
        !            67: 
        !            68:        propval = fdt_getprop_w(fdt, nodeoffset, name, &proplen);
        !            69:        if (! propval)
        !            70:                return proplen;
        !            71: 
        !            72:        if (proplen != len)
        !            73:                return -FDT_ERR_NOSPACE;
        !            74: 
        !            75:        memcpy(propval, val, len);
        !            76:        return 0;
        !            77: }
        !            78: 
        !            79: static void _fdt_nop_region(void *start, int len)
        !            80: {
        !            81:        uint32_t *p;
        !            82: 
        !            83:        for (p = start; (char *)p < ((char *)start + len); p++)
        !            84:                *p = cpu_to_fdt32(FDT_NOP);
        !            85: }
        !            86: 
        !            87: int fdt_nop_property(void *fdt, int nodeoffset, const char *name)
        !            88: {
        !            89:        struct fdt_property *prop;
        !            90:        int len;
        !            91: 
        !            92:        prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
        !            93:        if (! prop)
        !            94:                return len;
        !            95: 
        !            96:        _fdt_nop_region(prop, len + sizeof(*prop));
        !            97: 
        !            98:        return 0;
        !            99: }
        !           100: 
        !           101: int _fdt_node_end_offset(void *fdt, int offset)
        !           102: {
        !           103:        int depth = 0;
        !           104: 
        !           105:        while ((offset >= 0) && (depth >= 0))
        !           106:                offset = fdt_next_node(fdt, offset, &depth);
        !           107: 
        !           108:        return offset;
        !           109: }
        !           110: 
        !           111: int fdt_nop_node(void *fdt, int nodeoffset)
        !           112: {
        !           113:        int endoffset;
        !           114: 
        !           115:        endoffset = _fdt_node_end_offset(fdt, nodeoffset);
        !           116:        if (endoffset < 0)
        !           117:                return endoffset;
        !           118: 
        !           119:        _fdt_nop_region(fdt_offset_ptr_w(fdt, nodeoffset, 0),
        !           120:                        endoffset - nodeoffset);
        !           121:        return 0;
        !           122: }