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 | |
| 62 | if ((err = _fdt_check_header(fdt))) |
| 63 | return err; |
| 64 | if (fdt_version(fdt) < 0x11) |
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 | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 77 | return 0; |
| 78 | } |
| 79 | |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 80 | #define RW_CHECK_HEADER(fdt) \ |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 81 | { \ |
| 82 | int err; \ |
| 83 | if ((err = rw_check_header(fdt)) != 0) \ |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 84 | return err; \ |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 85 | } |
| 86 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 87 | static inline int _blob_data_size(void *fdt) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 88 | { |
| 89 | return fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt); |
| 90 | } |
| 91 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 92 | static int _blob_splice(void *fdt, void *p, int oldlen, int newlen) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 93 | { |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 94 | void *end = fdt + _blob_data_size(fdt); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 95 | |
| 96 | if (((p + oldlen) < p) || ((p + oldlen) > end)) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 97 | return -FDT_ERR_BADOFFSET; |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 98 | if ((end - oldlen + newlen) > (fdt + fdt_totalsize(fdt))) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 99 | return -FDT_ERR_NOSPACE; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 100 | memmove(p + newlen, p + oldlen, end - p - oldlen); |
| 101 | return 0; |
| 102 | } |
| 103 | |
David Gibson | fd1bf3a | 2007-10-10 17:12:12 +1000 | [diff] [blame] | 104 | static int _blob_splice_mem_rsv(void *fdt, struct fdt_reserve_entry *p, |
| 105 | int oldn, int newn) |
| 106 | { |
| 107 | int delta = (newn - oldn) * sizeof(*p); |
| 108 | int err; |
| 109 | err = _blob_splice(fdt, p, oldn * sizeof(*p), newn * sizeof(*p)); |
| 110 | if (err) |
| 111 | return err; |
| 112 | fdt_set_header(fdt, off_dt_struct, fdt_off_dt_struct(fdt) + delta); |
| 113 | fdt_set_header(fdt, off_dt_strings, fdt_off_dt_strings(fdt) + delta); |
| 114 | return 0; |
| 115 | } |
| 116 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 117 | static int _blob_splice_struct(void *fdt, void *p, |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 118 | int oldlen, int newlen) |
| 119 | { |
| 120 | int delta = newlen - oldlen; |
| 121 | int err; |
| 122 | |
| 123 | if ((err = _blob_splice(fdt, p, oldlen, newlen))) |
| 124 | return err; |
| 125 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 126 | fdt_set_header(fdt, size_dt_struct, fdt_size_dt_struct(fdt) + delta); |
| 127 | fdt_set_header(fdt, off_dt_strings, fdt_off_dt_strings(fdt) + delta); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 128 | return 0; |
| 129 | } |
| 130 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 131 | static int _blob_splice_string(void *fdt, int newlen) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 132 | { |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 133 | 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] | 134 | int err; |
| 135 | |
| 136 | if ((err = _blob_splice(fdt, p, 0, newlen))) |
| 137 | return err; |
| 138 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 139 | fdt_set_header(fdt, size_dt_strings, fdt_size_dt_strings(fdt) + newlen); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 140 | return 0; |
| 141 | } |
| 142 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 143 | static int _find_add_string(void *fdt, const char *s) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 144 | { |
| 145 | char *strtab = (char *)fdt + fdt_off_dt_strings(fdt); |
| 146 | const char *p; |
| 147 | char *new; |
| 148 | int len = strlen(s) + 1; |
| 149 | int err; |
| 150 | |
| 151 | p = _fdt_find_string(strtab, fdt_size_dt_strings(fdt), s); |
| 152 | if (p) |
| 153 | /* found it */ |
| 154 | return (p - strtab); |
| 155 | |
| 156 | new = strtab + fdt_size_dt_strings(fdt); |
| 157 | err = _blob_splice_string(fdt, len); |
| 158 | if (err) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 159 | return err; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 160 | |
| 161 | memcpy(new, s, len); |
| 162 | return (new - strtab); |
| 163 | } |
| 164 | |
David Gibson | fd1bf3a | 2007-10-10 17:12:12 +1000 | [diff] [blame] | 165 | int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size) |
| 166 | { |
| 167 | struct fdt_reserve_entry *re; |
| 168 | int err; |
| 169 | |
| 170 | if ((err = rw_check_header(fdt))) |
| 171 | return err; |
| 172 | |
| 173 | re = _fdt_mem_rsv_w(fdt, fdt_num_mem_rsv(fdt)); |
| 174 | err = _blob_splice_mem_rsv(fdt, re, 0, 1); |
| 175 | if (err) |
| 176 | return err; |
| 177 | |
| 178 | re->address = cpu_to_fdt64(address); |
| 179 | re->size = cpu_to_fdt64(size); |
| 180 | return 0; |
| 181 | } |
| 182 | |
| 183 | int fdt_del_mem_rsv(void *fdt, int n) |
| 184 | { |
| 185 | struct fdt_reserve_entry *re = _fdt_mem_rsv_w(fdt, n); |
| 186 | int err; |
| 187 | |
| 188 | if ((err = rw_check_header(fdt))) |
| 189 | return err; |
| 190 | if (n >= fdt_num_mem_rsv(fdt)) |
| 191 | return -FDT_ERR_NOTFOUND; |
| 192 | |
| 193 | err = _blob_splice_mem_rsv(fdt, re, 1, 0); |
| 194 | if (err) |
| 195 | return err; |
| 196 | return 0; |
| 197 | } |
| 198 | |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 199 | static int _resize_property(void *fdt, int nodeoffset, const char *name, int len, |
| 200 | struct fdt_property **prop) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 201 | { |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 202 | int oldlen; |
| 203 | int err; |
| 204 | |
David Gibson | a6c76f9 | 2007-06-13 14:18:10 +1000 | [diff] [blame] | 205 | *prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen); |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 206 | if (! (*prop)) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 207 | return oldlen; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 208 | |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 209 | if ((err = _blob_splice_struct(fdt, (*prop)->data, |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 210 | ALIGN(oldlen, FDT_TAGSIZE), |
| 211 | ALIGN(len, FDT_TAGSIZE)))) |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 212 | return err; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 213 | |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 214 | (*prop)->len = cpu_to_fdt32(len); |
| 215 | return 0; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 216 | } |
| 217 | |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 218 | static int _add_property(void *fdt, int nodeoffset, const char *name, int len, |
| 219 | struct fdt_property **prop) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 220 | { |
| 221 | uint32_t tag; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 222 | int proplen; |
| 223 | int nextoffset; |
| 224 | int namestroff; |
| 225 | int err; |
| 226 | |
| 227 | tag = _fdt_next_tag(fdt, nodeoffset, &nextoffset); |
| 228 | if (tag != FDT_BEGIN_NODE) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 229 | return -FDT_ERR_BADOFFSET; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 230 | |
| 231 | namestroff = _find_add_string(fdt, name); |
| 232 | if (namestroff < 0) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 233 | return namestroff; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 234 | |
David Gibson | a6c76f9 | 2007-06-13 14:18:10 +1000 | [diff] [blame] | 235 | *prop = _fdt_offset_ptr_w(fdt, nextoffset); |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 236 | proplen = sizeof(**prop) + ALIGN(len, FDT_TAGSIZE); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 237 | |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 238 | err = _blob_splice_struct(fdt, *prop, 0, proplen); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 239 | if (err) |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 240 | return err; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 241 | |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 242 | (*prop)->tag = cpu_to_fdt32(FDT_PROP); |
| 243 | (*prop)->nameoff = cpu_to_fdt32(namestroff); |
| 244 | (*prop)->len = cpu_to_fdt32(len); |
| 245 | return 0; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 246 | } |
| 247 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 248 | int fdt_setprop(void *fdt, int nodeoffset, const char *name, |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 249 | const void *val, int len) |
| 250 | { |
| 251 | struct fdt_property *prop; |
| 252 | int err; |
| 253 | |
| 254 | if ((err = rw_check_header(fdt))) |
| 255 | return err; |
| 256 | |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 257 | err = _resize_property(fdt, nodeoffset, name, len, &prop); |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 258 | if (err == -FDT_ERR_NOTFOUND) |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 259 | err = _add_property(fdt, nodeoffset, name, len, &prop); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 260 | if (err) |
| 261 | return err; |
| 262 | |
| 263 | memcpy(prop->data, val, len); |
| 264 | return 0; |
| 265 | } |
| 266 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 267 | int fdt_delprop(void *fdt, int nodeoffset, const char *name) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 268 | { |
| 269 | struct fdt_property *prop; |
| 270 | int len, proplen; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 271 | |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 272 | RW_CHECK_HEADER(fdt); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 273 | |
David Gibson | a6c76f9 | 2007-06-13 14:18:10 +1000 | [diff] [blame] | 274 | prop = fdt_get_property_w(fdt, nodeoffset, name, &len); |
David Gibson | a7ee95d | 2006-12-15 15:12:49 +1100 | [diff] [blame] | 275 | if (! prop) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 276 | return len; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 277 | |
| 278 | proplen = sizeof(*prop) + ALIGN(len, FDT_TAGSIZE); |
| 279 | return _blob_splice_struct(fdt, prop, proplen, 0); |
| 280 | } |
| 281 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 282 | int fdt_add_subnode_namelen(void *fdt, int parentoffset, |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 283 | const char *name, int namelen) |
| 284 | { |
| 285 | struct fdt_node_header *nh; |
| 286 | int offset, nextoffset; |
| 287 | int nodelen; |
| 288 | int err; |
| 289 | uint32_t tag; |
| 290 | uint32_t *endtag; |
| 291 | |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 292 | RW_CHECK_HEADER(fdt); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 293 | |
| 294 | offset = fdt_subnode_offset_namelen(fdt, parentoffset, name, namelen); |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 295 | if (offset >= 0) |
| 296 | return -FDT_ERR_EXISTS; |
| 297 | else if (offset != -FDT_ERR_NOTFOUND) |
| 298 | return offset; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 299 | |
| 300 | /* Try to place the new node after the parent's properties */ |
| 301 | _fdt_next_tag(fdt, parentoffset, &nextoffset); /* skip the BEGIN_NODE */ |
| 302 | do { |
| 303 | offset = nextoffset; |
| 304 | tag = _fdt_next_tag(fdt, offset, &nextoffset); |
| 305 | } while (tag == FDT_PROP); |
| 306 | |
David Gibson | a6c76f9 | 2007-06-13 14:18:10 +1000 | [diff] [blame] | 307 | nh = _fdt_offset_ptr_w(fdt, offset); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 308 | nodelen = sizeof(*nh) + ALIGN(namelen+1, FDT_TAGSIZE) + FDT_TAGSIZE; |
David Gibson | 568b569 | 2006-12-12 15:46:14 +1100 | [diff] [blame] | 309 | |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 310 | err = _blob_splice_struct(fdt, nh, 0, nodelen); |
| 311 | if (err) |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 312 | return err; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 313 | |
| 314 | nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE); |
| 315 | memset(nh->name, 0, ALIGN(namelen+1, FDT_TAGSIZE)); |
| 316 | memcpy(nh->name, name, namelen); |
| 317 | endtag = (uint32_t *)((void *)nh + nodelen - FDT_TAGSIZE); |
| 318 | *endtag = cpu_to_fdt32(FDT_END_NODE); |
| 319 | |
| 320 | return offset; |
| 321 | } |
| 322 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 323 | int fdt_add_subnode(void *fdt, int parentoffset, const char *name) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 324 | { |
| 325 | return fdt_add_subnode_namelen(fdt, parentoffset, name, strlen(name)); |
| 326 | } |
| 327 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 328 | int fdt_del_node(void *fdt, int nodeoffset) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 329 | { |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 330 | int endoffset; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 331 | |
| 332 | endoffset = _fdt_node_end_offset(fdt, nodeoffset); |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 333 | if (endoffset < 0) |
| 334 | return endoffset; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 335 | |
David Gibson | a6c76f9 | 2007-06-13 14:18:10 +1000 | [diff] [blame] | 336 | return _blob_splice_struct(fdt, _fdt_offset_ptr_w(fdt, nodeoffset), |
David Gibson | 568b569 | 2006-12-12 15:46:14 +1100 | [diff] [blame] | 337 | endoffset - nodeoffset, 0); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 338 | } |
| 339 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 340 | int fdt_open_into(void *fdt, void *buf, int bufsize) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 341 | { |
| 342 | int err; |
| 343 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 344 | err = fdt_move(fdt, buf, bufsize); |
| 345 | if (err) |
| 346 | return err; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 347 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 348 | fdt = buf; |
| 349 | |
| 350 | fdt_set_header(fdt, totalsize, bufsize); |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 351 | |
| 352 | /* FIXME: re-order if necessary */ |
| 353 | |
| 354 | err = rw_check_header(fdt); |
| 355 | if (err) |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 356 | return err; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 357 | |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 358 | return 0; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 359 | } |
| 360 | |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 361 | int fdt_pack(void *fdt) |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 362 | { |
| 363 | int err; |
| 364 | |
| 365 | err = rw_check_header(fdt); |
| 366 | if (err) |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 367 | return err; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 368 | |
| 369 | /* FIXME: pack components */ |
David Gibson | 73d6092 | 2006-12-15 15:12:47 +1100 | [diff] [blame] | 370 | fdt_set_header(fdt, totalsize, _blob_data_size(fdt)); |
David Gibson | 9a9fdf5 | 2006-12-15 15:12:51 +1100 | [diff] [blame] | 371 | return 0; |
David Gibson | 7ba551f | 2006-12-01 16:59:43 +1100 | [diff] [blame] | 372 | } |