David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 1 | /* |
| 2 | * libfdt - Flat Device Tree manipulation |
| 3 | * Copyright (C) 2006 David Gibson, IBM Corporation. |
| 4 | * |
David Gibson | 9481605 | 2007-06-13 16:30:48 +1000 | [diff] [blame] | 5 | * libfdt is dual licensed: you can use it either under the terms of |
| 6 | * the GPL, or the BSD license, at your option. |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 7 | * |
David Gibson | 9481605 | 2007-06-13 16:30:48 +1000 | [diff] [blame] | 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. |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 12 | * |
David Gibson | 9481605 | 2007-06-13 16:30:48 +1000 | [diff] [blame] | 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. |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 50 | */ |
| 51 | #include "libfdt_env.h" |
| 52 | |
| 53 | #include <fdt.h> |
| 54 | #include <libfdt.h> |
| 55 | |
| 56 | #include "libfdt_internal.h" |
| 57 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 58 | static int rw_check_header(void *fdt) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 59 | { |
| 60 | int err; |
| 61 | |
David Gibson | 96b5fad | 2007-10-24 10:28:52 +1000 | [diff] [blame] | 62 | if ((err = fdt_check_header(fdt))) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 63 | return err; |
David Gibson | 4a5df5c | 2007-10-30 13:22:12 +1100 | [diff] [blame^] | 64 | if (fdt_version(fdt) < 17) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 65 | return -FDT_ERR_BADVERSION; |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 66 | if (fdt_off_mem_rsvmap(fdt) < ALIGN(sizeof(struct fdt_header), 8)) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 67 | return -FDT_ERR_BADLAYOUT; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 68 | if (fdt_off_dt_struct(fdt) < |
| 69 | (fdt_off_mem_rsvmap(fdt) + sizeof(struct fdt_reserve_entry))) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 70 | return -FDT_ERR_BADLAYOUT; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 71 | if (fdt_off_dt_strings(fdt) < |
| 72 | (fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt))) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 73 | return -FDT_ERR_BADLAYOUT; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 74 | if (fdt_totalsize(fdt) < |
| 75 | (fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt))) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 76 | return -FDT_ERR_BADLAYOUT; |
David Gibson | 4a5df5c | 2007-10-30 13:22:12 +1100 | [diff] [blame^] | 77 | if (fdt_version(fdt) > 17) |
| 78 | fdt_set_version(fdt, 17); |
| 79 | |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 80 | return 0; |
| 81 | } |
| 82 | |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 83 | #define RW_CHECK_HEADER(fdt) \ |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 84 | { \ |
| 85 | int err; \ |
| 86 | if ((err = rw_check_header(fdt)) != 0) \ |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 87 | return err; \ |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 88 | } |
| 89 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 90 | static inline int _blob_data_size(void *fdt) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 91 | { |
| 92 | return fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt); |
| 93 | } |
| 94 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 95 | static int _blob_splice(void *fdt, void *p, int oldlen, int newlen) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 96 | { |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 97 | void *end = fdt + _blob_data_size(fdt); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 98 | |
| 99 | if (((p + oldlen) < p) || ((p + oldlen) > end)) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 100 | return -FDT_ERR_BADOFFSET; |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 101 | if ((end - oldlen + newlen) > (fdt + fdt_totalsize(fdt))) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 102 | return -FDT_ERR_NOSPACE; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 103 | memmove(p + newlen, p + oldlen, end - p - oldlen); |
| 104 | return 0; |
| 105 | } |
| 106 | |
David Gibson | fd1bf3a | 2007-10-10 17:12:12 +1000 | [diff] [blame] | 107 | static int _blob_splice_mem_rsv(void *fdt, struct fdt_reserve_entry *p, |
| 108 | int oldn, int newn) |
| 109 | { |
| 110 | int delta = (newn - oldn) * sizeof(*p); |
| 111 | int err; |
| 112 | err = _blob_splice(fdt, p, oldn * sizeof(*p), newn * sizeof(*p)); |
| 113 | if (err) |
| 114 | return err; |
David Gibson | 9b91134 | 2007-10-25 14:29:38 +1000 | [diff] [blame] | 115 | fdt_set_off_dt_struct(fdt, fdt_off_dt_struct(fdt) + delta); |
| 116 | fdt_set_off_dt_strings(fdt, fdt_off_dt_strings(fdt) + delta); |
David Gibson | fd1bf3a | 2007-10-10 17:12:12 +1000 | [diff] [blame] | 117 | return 0; |
| 118 | } |
| 119 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 120 | static int _blob_splice_struct(void *fdt, void *p, |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 121 | int oldlen, int newlen) |
| 122 | { |
| 123 | int delta = newlen - oldlen; |
| 124 | int err; |
| 125 | |
| 126 | if ((err = _blob_splice(fdt, p, oldlen, newlen))) |
| 127 | return err; |
| 128 | |
David Gibson | 9b91134 | 2007-10-25 14:29:38 +1000 | [diff] [blame] | 129 | fdt_set_size_dt_struct(fdt, fdt_size_dt_struct(fdt) + delta); |
| 130 | fdt_set_off_dt_strings(fdt, fdt_off_dt_strings(fdt) + delta); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 131 | return 0; |
| 132 | } |
| 133 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 134 | static int _blob_splice_string(void *fdt, int newlen) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 135 | { |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 136 | void *p = fdt + fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 137 | int err; |
| 138 | |
| 139 | if ((err = _blob_splice(fdt, p, 0, newlen))) |
| 140 | return err; |
| 141 | |
David Gibson | 9b91134 | 2007-10-25 14:29:38 +1000 | [diff] [blame] | 142 | fdt_set_size_dt_strings(fdt, fdt_size_dt_strings(fdt) + newlen); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 143 | return 0; |
| 144 | } |
| 145 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 146 | static int _find_add_string(void *fdt, const char *s) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 147 | { |
| 148 | char *strtab = (char *)fdt + fdt_off_dt_strings(fdt); |
| 149 | const char *p; |
| 150 | char *new; |
| 151 | int len = strlen(s) + 1; |
| 152 | int err; |
| 153 | |
| 154 | p = _fdt_find_string(strtab, fdt_size_dt_strings(fdt), s); |
| 155 | if (p) |
| 156 | /* found it */ |
| 157 | return (p - strtab); |
| 158 | |
| 159 | new = strtab + fdt_size_dt_strings(fdt); |
| 160 | err = _blob_splice_string(fdt, len); |
| 161 | if (err) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 162 | return err; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 163 | |
| 164 | memcpy(new, s, len); |
| 165 | return (new - strtab); |
| 166 | } |
| 167 | |
David Gibson | fd1bf3a | 2007-10-10 17:12:12 +1000 | [diff] [blame] | 168 | int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size) |
| 169 | { |
| 170 | struct fdt_reserve_entry *re; |
| 171 | int err; |
| 172 | |
| 173 | if ((err = rw_check_header(fdt))) |
| 174 | return err; |
| 175 | |
| 176 | re = _fdt_mem_rsv_w(fdt, fdt_num_mem_rsv(fdt)); |
| 177 | err = _blob_splice_mem_rsv(fdt, re, 0, 1); |
| 178 | if (err) |
| 179 | return err; |
| 180 | |
| 181 | re->address = cpu_to_fdt64(address); |
| 182 | re->size = cpu_to_fdt64(size); |
| 183 | return 0; |
| 184 | } |
| 185 | |
| 186 | int fdt_del_mem_rsv(void *fdt, int n) |
| 187 | { |
| 188 | struct fdt_reserve_entry *re = _fdt_mem_rsv_w(fdt, n); |
| 189 | int err; |
| 190 | |
| 191 | if ((err = rw_check_header(fdt))) |
| 192 | return err; |
| 193 | if (n >= fdt_num_mem_rsv(fdt)) |
| 194 | return -FDT_ERR_NOTFOUND; |
| 195 | |
| 196 | err = _blob_splice_mem_rsv(fdt, re, 1, 0); |
| 197 | if (err) |
| 198 | return err; |
| 199 | return 0; |
| 200 | } |
| 201 | |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 202 | static int _resize_property(void *fdt, int nodeoffset, const char *name, int len, |
| 203 | struct fdt_property **prop) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 204 | { |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 205 | int oldlen; |
| 206 | int err; |
| 207 | |
David Gibson | a6c76f9 | 2007-06-13 14:18:10 +1000 | [diff] [blame] | 208 | *prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen); |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 209 | if (! (*prop)) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 210 | return oldlen; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 211 | |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 212 | if ((err = _blob_splice_struct(fdt, (*prop)->data, |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 213 | ALIGN(oldlen, FDT_TAGSIZE), |
| 214 | ALIGN(len, FDT_TAGSIZE)))) |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 215 | return err; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 216 | |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 217 | (*prop)->len = cpu_to_fdt32(len); |
| 218 | return 0; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 219 | } |
| 220 | |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 221 | static int _add_property(void *fdt, int nodeoffset, const char *name, int len, |
| 222 | struct fdt_property **prop) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 223 | { |
| 224 | uint32_t tag; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 225 | int proplen; |
| 226 | int nextoffset; |
| 227 | int namestroff; |
| 228 | int err; |
| 229 | |
David Gibson | 3c44c87 | 2007-10-24 11:06:09 +1000 | [diff] [blame] | 230 | tag = fdt_next_tag(fdt, nodeoffset, &nextoffset); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 231 | if (tag != FDT_BEGIN_NODE) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 232 | return -FDT_ERR_BADOFFSET; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 233 | |
| 234 | namestroff = _find_add_string(fdt, name); |
| 235 | if (namestroff < 0) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 236 | return namestroff; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 237 | |
David Gibson | a6c76f9 | 2007-06-13 14:18:10 +1000 | [diff] [blame] | 238 | *prop = _fdt_offset_ptr_w(fdt, nextoffset); |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 239 | proplen = sizeof(**prop) + ALIGN(len, FDT_TAGSIZE); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 240 | |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 241 | err = _blob_splice_struct(fdt, *prop, 0, proplen); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 242 | if (err) |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 243 | return err; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 244 | |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 245 | (*prop)->tag = cpu_to_fdt32(FDT_PROP); |
| 246 | (*prop)->nameoff = cpu_to_fdt32(namestroff); |
| 247 | (*prop)->len = cpu_to_fdt32(len); |
| 248 | return 0; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 249 | } |
| 250 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 251 | int fdt_setprop(void *fdt, int nodeoffset, const char *name, |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 252 | const void *val, int len) |
| 253 | { |
| 254 | struct fdt_property *prop; |
| 255 | int err; |
| 256 | |
| 257 | if ((err = rw_check_header(fdt))) |
| 258 | return err; |
| 259 | |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 260 | err = _resize_property(fdt, nodeoffset, name, len, &prop); |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 261 | if (err == -FDT_ERR_NOTFOUND) |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 262 | err = _add_property(fdt, nodeoffset, name, len, &prop); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 263 | if (err) |
| 264 | return err; |
| 265 | |
| 266 | memcpy(prop->data, val, len); |
| 267 | return 0; |
| 268 | } |
| 269 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 270 | int fdt_delprop(void *fdt, int nodeoffset, const char *name) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 271 | { |
| 272 | struct fdt_property *prop; |
| 273 | int len, proplen; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 274 | |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 275 | RW_CHECK_HEADER(fdt); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 276 | |
David Gibson | a6c76f9 | 2007-06-13 14:18:10 +1000 | [diff] [blame] | 277 | prop = fdt_get_property_w(fdt, nodeoffset, name, &len); |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 278 | if (! prop) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 279 | return len; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 280 | |
| 281 | proplen = sizeof(*prop) + ALIGN(len, FDT_TAGSIZE); |
| 282 | return _blob_splice_struct(fdt, prop, proplen, 0); |
| 283 | } |
| 284 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 285 | int fdt_add_subnode_namelen(void *fdt, int parentoffset, |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 286 | const char *name, int namelen) |
| 287 | { |
| 288 | struct fdt_node_header *nh; |
| 289 | int offset, nextoffset; |
| 290 | int nodelen; |
| 291 | int err; |
| 292 | uint32_t tag; |
| 293 | uint32_t *endtag; |
| 294 | |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 295 | RW_CHECK_HEADER(fdt); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 296 | |
| 297 | offset = fdt_subnode_offset_namelen(fdt, parentoffset, name, namelen); |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 298 | if (offset >= 0) |
| 299 | return -FDT_ERR_EXISTS; |
| 300 | else if (offset != -FDT_ERR_NOTFOUND) |
| 301 | return offset; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 302 | |
| 303 | /* Try to place the new node after the parent's properties */ |
David Gibson | 3c44c87 | 2007-10-24 11:06:09 +1000 | [diff] [blame] | 304 | fdt_next_tag(fdt, parentoffset, &nextoffset); /* skip the BEGIN_NODE */ |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 305 | do { |
| 306 | offset = nextoffset; |
David Gibson | 3c44c87 | 2007-10-24 11:06:09 +1000 | [diff] [blame] | 307 | tag = fdt_next_tag(fdt, offset, &nextoffset); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 308 | } while (tag == FDT_PROP); |
| 309 | |
David Gibson | a6c76f9 | 2007-06-13 14:18:10 +1000 | [diff] [blame] | 310 | nh = _fdt_offset_ptr_w(fdt, offset); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 311 | nodelen = sizeof(*nh) + ALIGN(namelen+1, FDT_TAGSIZE) + FDT_TAGSIZE; |
David Gibson | 568b569 | 2006-12-12 15:46:14 +1100 | [diff] [blame] | 312 | |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 313 | err = _blob_splice_struct(fdt, nh, 0, nodelen); |
| 314 | if (err) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 315 | return err; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 316 | |
| 317 | nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE); |
| 318 | memset(nh->name, 0, ALIGN(namelen+1, FDT_TAGSIZE)); |
| 319 | memcpy(nh->name, name, namelen); |
| 320 | endtag = (uint32_t *)((void *)nh + nodelen - FDT_TAGSIZE); |
| 321 | *endtag = cpu_to_fdt32(FDT_END_NODE); |
| 322 | |
| 323 | return offset; |
| 324 | } |
| 325 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 326 | int fdt_add_subnode(void *fdt, int parentoffset, const char *name) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 327 | { |
| 328 | return fdt_add_subnode_namelen(fdt, parentoffset, name, strlen(name)); |
| 329 | } |
| 330 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 331 | int fdt_del_node(void *fdt, int nodeoffset) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 332 | { |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 333 | int endoffset; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 334 | |
David Gibson | 394e472 | 2007-10-18 14:17:25 +1000 | [diff] [blame] | 335 | RW_CHECK_HEADER(fdt); |
| 336 | |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 337 | endoffset = _fdt_node_end_offset(fdt, nodeoffset); |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 338 | if (endoffset < 0) |
| 339 | return endoffset; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 340 | |
David Gibson | a6c76f9 | 2007-06-13 14:18:10 +1000 | [diff] [blame] | 341 | return _blob_splice_struct(fdt, _fdt_offset_ptr_w(fdt, nodeoffset), |
David Gibson | 568b569 | 2006-12-12 15:46:14 +1100 | [diff] [blame] | 342 | endoffset - nodeoffset, 0); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 343 | } |
| 344 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 345 | int fdt_open_into(void *fdt, void *buf, int bufsize) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 346 | { |
| 347 | int err; |
| 348 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 349 | err = fdt_move(fdt, buf, bufsize); |
| 350 | if (err) |
| 351 | return err; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 352 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 353 | fdt = buf; |
| 354 | |
David Gibson | 9b91134 | 2007-10-25 14:29:38 +1000 | [diff] [blame] | 355 | fdt_set_totalsize(fdt, bufsize); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 356 | |
| 357 | /* FIXME: re-order if necessary */ |
| 358 | |
| 359 | err = rw_check_header(fdt); |
| 360 | if (err) |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 361 | return err; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 362 | |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 363 | return 0; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 364 | } |
| 365 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 366 | int fdt_pack(void *fdt) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 367 | { |
| 368 | int err; |
| 369 | |
| 370 | err = rw_check_header(fdt); |
| 371 | if (err) |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 372 | return err; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 373 | |
| 374 | /* FIXME: pack components */ |
David Gibson | 9b91134 | 2007-10-25 14:29:38 +1000 | [diff] [blame] | 375 | fdt_set_totalsize(fdt, _blob_data_size(fdt)); |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 376 | return 0; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 377 | } |