fdt_wip.c revision 1.1.1.1.2.2
1 1.1.1.1.2.2 skrll /* 2 1.1.1.1.2.2 skrll * libfdt - Flat Device Tree manipulation 3 1.1.1.1.2.2 skrll * Copyright (C) 2006 David Gibson, IBM Corporation. 4 1.1.1.1.2.2 skrll * 5 1.1.1.1.2.2 skrll * libfdt is dual licensed: you can use it either under the terms of 6 1.1.1.1.2.2 skrll * the GPL, or the BSD license, at your option. 7 1.1.1.1.2.2 skrll * 8 1.1.1.1.2.2 skrll * a) This library is free software; you can redistribute it and/or 9 1.1.1.1.2.2 skrll * modify it under the terms of the GNU General Public License as 10 1.1.1.1.2.2 skrll * published by the Free Software Foundation; either version 2 of the 11 1.1.1.1.2.2 skrll * License, or (at your option) any later version. 12 1.1.1.1.2.2 skrll * 13 1.1.1.1.2.2 skrll * This library is distributed in the hope that it will be useful, 14 1.1.1.1.2.2 skrll * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 1.1.1.1.2.2 skrll * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 1.1.1.1.2.2 skrll * GNU General Public License for more details. 17 1.1.1.1.2.2 skrll * 18 1.1.1.1.2.2 skrll * You should have received a copy of the GNU General Public 19 1.1.1.1.2.2 skrll * License along with this library; if not, write to the Free 20 1.1.1.1.2.2 skrll * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, 21 1.1.1.1.2.2 skrll * MA 02110-1301 USA 22 1.1.1.1.2.2 skrll * 23 1.1.1.1.2.2 skrll * Alternatively, 24 1.1.1.1.2.2 skrll * 25 1.1.1.1.2.2 skrll * b) Redistribution and use in source and binary forms, with or 26 1.1.1.1.2.2 skrll * without modification, are permitted provided that the following 27 1.1.1.1.2.2 skrll * conditions are met: 28 1.1.1.1.2.2 skrll * 29 1.1.1.1.2.2 skrll * 1. Redistributions of source code must retain the above 30 1.1.1.1.2.2 skrll * copyright notice, this list of conditions and the following 31 1.1.1.1.2.2 skrll * disclaimer. 32 1.1.1.1.2.2 skrll * 2. Redistributions in binary form must reproduce the above 33 1.1.1.1.2.2 skrll * copyright notice, this list of conditions and the following 34 1.1.1.1.2.2 skrll * disclaimer in the documentation and/or other materials 35 1.1.1.1.2.2 skrll * provided with the distribution. 36 1.1.1.1.2.2 skrll * 37 1.1.1.1.2.2 skrll * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 38 1.1.1.1.2.2 skrll * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 39 1.1.1.1.2.2 skrll * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 40 1.1.1.1.2.2 skrll * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 41 1.1.1.1.2.2 skrll * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 42 1.1.1.1.2.2 skrll * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 43 1.1.1.1.2.2 skrll * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 44 1.1.1.1.2.2 skrll * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 45 1.1.1.1.2.2 skrll * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 46 1.1.1.1.2.2 skrll * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 47 1.1.1.1.2.2 skrll * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 48 1.1.1.1.2.2 skrll * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 49 1.1.1.1.2.2 skrll * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 50 1.1.1.1.2.2 skrll */ 51 1.1.1.1.2.2 skrll #include "libfdt_env.h" 52 1.1.1.1.2.2 skrll 53 1.1.1.1.2.2 skrll #include <fdt.h> 54 1.1.1.1.2.2 skrll #include <libfdt.h> 55 1.1.1.1.2.2 skrll 56 1.1.1.1.2.2 skrll #include "libfdt_internal.h" 57 1.1.1.1.2.2 skrll 58 1.1.1.1.2.2 skrll int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name, 59 1.1.1.1.2.2 skrll const void *val, int len) 60 1.1.1.1.2.2 skrll { 61 1.1.1.1.2.2 skrll void *propval; 62 1.1.1.1.2.2 skrll int proplen; 63 1.1.1.1.2.2 skrll 64 1.1.1.1.2.2 skrll propval = fdt_getprop_w(fdt, nodeoffset, name, &proplen); 65 1.1.1.1.2.2 skrll if (! propval) 66 1.1.1.1.2.2 skrll return proplen; 67 1.1.1.1.2.2 skrll 68 1.1.1.1.2.2 skrll if (proplen != len) 69 1.1.1.1.2.2 skrll return -FDT_ERR_NOSPACE; 70 1.1.1.1.2.2 skrll 71 1.1.1.1.2.2 skrll memcpy(propval, val, len); 72 1.1.1.1.2.2 skrll return 0; 73 1.1.1.1.2.2 skrll } 74 1.1.1.1.2.2 skrll 75 1.1.1.1.2.2 skrll static void _fdt_nop_region(void *start, int len) 76 1.1.1.1.2.2 skrll { 77 1.1.1.1.2.2 skrll fdt32_t *p; 78 1.1.1.1.2.2 skrll 79 1.1.1.1.2.2 skrll for (p = start; (char *)p < ((char *)start + len); p++) 80 1.1.1.1.2.2 skrll *p = cpu_to_fdt32(FDT_NOP); 81 1.1.1.1.2.2 skrll } 82 1.1.1.1.2.2 skrll 83 1.1.1.1.2.2 skrll int fdt_nop_property(void *fdt, int nodeoffset, const char *name) 84 1.1.1.1.2.2 skrll { 85 1.1.1.1.2.2 skrll struct fdt_property *prop; 86 1.1.1.1.2.2 skrll int len; 87 1.1.1.1.2.2 skrll 88 1.1.1.1.2.2 skrll prop = fdt_get_property_w(fdt, nodeoffset, name, &len); 89 1.1.1.1.2.2 skrll if (! prop) 90 1.1.1.1.2.2 skrll return len; 91 1.1.1.1.2.2 skrll 92 1.1.1.1.2.2 skrll _fdt_nop_region(prop, len + sizeof(*prop)); 93 1.1.1.1.2.2 skrll 94 1.1.1.1.2.2 skrll return 0; 95 1.1.1.1.2.2 skrll } 96 1.1.1.1.2.2 skrll 97 1.1.1.1.2.2 skrll int _fdt_node_end_offset(void *fdt, int offset) 98 1.1.1.1.2.2 skrll { 99 1.1.1.1.2.2 skrll int depth = 0; 100 1.1.1.1.2.2 skrll 101 1.1.1.1.2.2 skrll while ((offset >= 0) && (depth >= 0)) 102 1.1.1.1.2.2 skrll offset = fdt_next_node(fdt, offset, &depth); 103 1.1.1.1.2.2 skrll 104 1.1.1.1.2.2 skrll return offset; 105 1.1.1.1.2.2 skrll } 106 1.1.1.1.2.2 skrll 107 1.1.1.1.2.2 skrll int fdt_nop_node(void *fdt, int nodeoffset) 108 1.1.1.1.2.2 skrll { 109 1.1.1.1.2.2 skrll int endoffset; 110 1.1.1.1.2.2 skrll 111 1.1.1.1.2.2 skrll endoffset = _fdt_node_end_offset(fdt, nodeoffset); 112 1.1.1.1.2.2 skrll if (endoffset < 0) 113 1.1.1.1.2.2 skrll return endoffset; 114 1.1.1.1.2.2 skrll 115 1.1.1.1.2.2 skrll _fdt_nop_region(fdt_offset_ptr_w(fdt, nodeoffset, 0), 116 1.1.1.1.2.2 skrll endoffset - nodeoffset); 117 1.1.1.1.2.2 skrll return 0; 118 1.1.1.1.2.2 skrll } 119
Indexes created Thu Oct 02 01:09:59 GMT 2025