Gerald Van Baren | c4a57ea | 2007-04-06 14:19:43 -0400 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2007 |
| 3 | * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com |
| 4 | * |
Shengzhou Liu | a7be802 | 2011-10-14 16:26:05 +0800 | [diff] [blame] | 5 | * Copyright 2010-2011 Freescale Semiconductor, Inc. |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 6 | * |
Wolfgang Denk | d79de1d | 2013-07-08 09:37:19 +0200 | [diff] [blame] | 7 | * SPDX-License-Identifier: GPL-2.0+ |
Gerald Van Baren | c4a57ea | 2007-04-06 14:19:43 -0400 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #include <common.h> |
Simon Glass | e9f343f | 2014-11-11 12:47:07 -0700 | [diff] [blame] | 11 | #include <inttypes.h> |
Anton Vorontsov | 9e9cf60 | 2009-10-15 17:47:04 +0400 | [diff] [blame] | 12 | #include <stdio_dev.h> |
Gerald Van Baren | c4a57ea | 2007-04-06 14:19:43 -0400 | [diff] [blame] | 13 | #include <linux/ctype.h> |
| 14 | #include <linux/types.h> |
Gerald Van Baren | c4a57ea | 2007-04-06 14:19:43 -0400 | [diff] [blame] | 15 | #include <asm/global_data.h> |
Gerald Van Baren | c4a57ea | 2007-04-06 14:19:43 -0400 | [diff] [blame] | 16 | #include <libfdt.h> |
| 17 | #include <fdt_support.h> |
Kumar Gala | 2dc9b4a | 2007-11-26 17:06:15 -0600 | [diff] [blame] | 18 | #include <exports.h> |
Bin Meng | d9a0093 | 2015-12-07 01:39:47 -0800 | [diff] [blame] | 19 | #include <fdtdec.h> |
Gerald Van Baren | c4a57ea | 2007-04-06 14:19:43 -0400 | [diff] [blame] | 20 | |
Kumar Gala | 1ba0040 | 2008-10-23 00:05:47 -0500 | [diff] [blame] | 21 | /** |
Alexander Graf | 7c8a6cf | 2014-04-11 17:09:40 +0200 | [diff] [blame] | 22 | * fdt_getprop_u32_default_node - Return a node's property or a default |
| 23 | * |
| 24 | * @fdt: ptr to device tree |
| 25 | * @off: offset of node |
| 26 | * @cell: cell offset in property |
| 27 | * @prop: property name |
| 28 | * @dflt: default value if the property isn't found |
| 29 | * |
| 30 | * Convenience function to return a node's property or a default value if |
| 31 | * the property doesn't exist. |
| 32 | */ |
| 33 | u32 fdt_getprop_u32_default_node(const void *fdt, int off, int cell, |
| 34 | const char *prop, const u32 dflt) |
| 35 | { |
| 36 | const fdt32_t *val; |
| 37 | int len; |
| 38 | |
| 39 | val = fdt_getprop(fdt, off, prop, &len); |
| 40 | |
| 41 | /* Check if property exists */ |
| 42 | if (!val) |
| 43 | return dflt; |
| 44 | |
| 45 | /* Check if property is long enough */ |
| 46 | if (len < ((cell + 1) * sizeof(uint32_t))) |
| 47 | return dflt; |
| 48 | |
| 49 | return fdt32_to_cpu(*val); |
| 50 | } |
| 51 | |
| 52 | /** |
Kumar Gala | 1ba0040 | 2008-10-23 00:05:47 -0500 | [diff] [blame] | 53 | * fdt_getprop_u32_default - Find a node and return it's property or a default |
| 54 | * |
| 55 | * @fdt: ptr to device tree |
| 56 | * @path: path of node |
| 57 | * @prop: property name |
| 58 | * @dflt: default value if the property isn't found |
| 59 | * |
| 60 | * Convenience function to find a node and return it's property or a |
| 61 | * default value if it doesn't exist. |
| 62 | */ |
Gabe Black | cd37de7 | 2011-11-08 01:09:44 -0800 | [diff] [blame] | 63 | u32 fdt_getprop_u32_default(const void *fdt, const char *path, |
| 64 | const char *prop, const u32 dflt) |
Kumar Gala | 1ba0040 | 2008-10-23 00:05:47 -0500 | [diff] [blame] | 65 | { |
Kumar Gala | 1ba0040 | 2008-10-23 00:05:47 -0500 | [diff] [blame] | 66 | int off; |
| 67 | |
| 68 | off = fdt_path_offset(fdt, path); |
| 69 | if (off < 0) |
| 70 | return dflt; |
| 71 | |
Alexander Graf | 7c8a6cf | 2014-04-11 17:09:40 +0200 | [diff] [blame] | 72 | return fdt_getprop_u32_default_node(fdt, off, 0, prop, dflt); |
Kumar Gala | 1ba0040 | 2008-10-23 00:05:47 -0500 | [diff] [blame] | 73 | } |
Gerald Van Baren | c4a57ea | 2007-04-06 14:19:43 -0400 | [diff] [blame] | 74 | |
Kumar Gala | bf771dc | 2007-10-24 10:21:57 -0500 | [diff] [blame] | 75 | /** |
| 76 | * fdt_find_and_setprop: Find a node and set it's property |
| 77 | * |
| 78 | * @fdt: ptr to device tree |
| 79 | * @node: path of node |
| 80 | * @prop: property name |
| 81 | * @val: ptr to new value |
| 82 | * @len: length of new property value |
| 83 | * @create: flag to create the property if it doesn't exist |
| 84 | * |
| 85 | * Convenience function to directly set a property given the path to the node. |
| 86 | */ |
| 87 | int fdt_find_and_setprop(void *fdt, const char *node, const char *prop, |
| 88 | const void *val, int len, int create) |
| 89 | { |
Kumar Gala | c8ab705 | 2007-10-24 11:04:22 -0500 | [diff] [blame] | 90 | int nodeoff = fdt_path_offset(fdt, node); |
Kumar Gala | bf771dc | 2007-10-24 10:21:57 -0500 | [diff] [blame] | 91 | |
| 92 | if (nodeoff < 0) |
| 93 | return nodeoff; |
| 94 | |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 95 | if ((!create) && (fdt_get_property(fdt, nodeoff, prop, NULL) == NULL)) |
Kumar Gala | bf771dc | 2007-10-24 10:21:57 -0500 | [diff] [blame] | 96 | return 0; /* create flag not set; so exit quietly */ |
| 97 | |
| 98 | return fdt_setprop(fdt, nodeoff, prop, val, len); |
| 99 | } |
| 100 | |
Masahiro Yamada | c020728 | 2014-04-18 17:40:58 +0900 | [diff] [blame] | 101 | /** |
Simon Glass | 014aa05 | 2014-10-23 18:58:49 -0600 | [diff] [blame] | 102 | * fdt_find_or_add_subnode() - find or possibly add a subnode of a given node |
| 103 | * |
Masahiro Yamada | c020728 | 2014-04-18 17:40:58 +0900 | [diff] [blame] | 104 | * @fdt: pointer to the device tree blob |
| 105 | * @parentoffset: structure block offset of a node |
| 106 | * @name: name of the subnode to locate |
| 107 | * |
| 108 | * fdt_subnode_offset() finds a subnode of the node with a given name. |
| 109 | * If the subnode does not exist, it will be created. |
| 110 | */ |
Simon Glass | 014aa05 | 2014-10-23 18:58:49 -0600 | [diff] [blame] | 111 | int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name) |
Masahiro Yamada | c020728 | 2014-04-18 17:40:58 +0900 | [diff] [blame] | 112 | { |
| 113 | int offset; |
| 114 | |
| 115 | offset = fdt_subnode_offset(fdt, parentoffset, name); |
| 116 | |
| 117 | if (offset == -FDT_ERR_NOTFOUND) |
| 118 | offset = fdt_add_subnode(fdt, parentoffset, name); |
| 119 | |
| 120 | if (offset < 0) |
| 121 | printf("%s: %s: %s\n", __func__, name, fdt_strerror(offset)); |
| 122 | |
| 123 | return offset; |
| 124 | } |
| 125 | |
Masahiro Yamada | a467792c6 | 2014-04-18 17:41:01 +0900 | [diff] [blame] | 126 | /* rename to CONFIG_OF_STDOUT_PATH ? */ |
| 127 | #if defined(OF_STDOUT_PATH) |
| 128 | static int fdt_fixup_stdout(void *fdt, int chosenoff) |
| 129 | { |
| 130 | return fdt_setprop(fdt, chosenoff, "linux,stdout-path", |
| 131 | OF_STDOUT_PATH, strlen(OF_STDOUT_PATH) + 1); |
| 132 | } |
| 133 | #elif defined(CONFIG_OF_STDOUT_VIA_ALIAS) && defined(CONFIG_CONS_INDEX) |
Detlev Zundel | 46e192a | 2008-06-20 22:24:05 +0200 | [diff] [blame] | 134 | static int fdt_fixup_stdout(void *fdt, int chosenoff) |
Kumar Gala | 2dc9b4a | 2007-11-26 17:06:15 -0600 | [diff] [blame] | 135 | { |
Masahiro Yamada | a467792c6 | 2014-04-18 17:41:01 +0900 | [diff] [blame] | 136 | int err; |
| 137 | int aliasoff; |
Kumar Gala | 2dc9b4a | 2007-11-26 17:06:15 -0600 | [diff] [blame] | 138 | char sername[9] = { 0 }; |
Masahiro Yamada | a467792c6 | 2014-04-18 17:41:01 +0900 | [diff] [blame] | 139 | const void *path; |
| 140 | int len; |
| 141 | char tmp[256]; /* long enough */ |
Kumar Gala | 2dc9b4a | 2007-11-26 17:06:15 -0600 | [diff] [blame] | 142 | |
Bin Meng | b819911 | 2016-01-13 19:38:58 -0800 | [diff] [blame] | 143 | sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1); |
Kumar Gala | 2dc9b4a | 2007-11-26 17:06:15 -0600 | [diff] [blame] | 144 | |
Masahiro Yamada | a467792c6 | 2014-04-18 17:41:01 +0900 | [diff] [blame] | 145 | aliasoff = fdt_path_offset(fdt, "/aliases"); |
| 146 | if (aliasoff < 0) { |
| 147 | err = aliasoff; |
Scott Wood | edd551f | 2015-09-01 22:48:08 -0500 | [diff] [blame] | 148 | goto noalias; |
Kumar Gala | 2dc9b4a | 2007-11-26 17:06:15 -0600 | [diff] [blame] | 149 | } |
Masahiro Yamada | a467792c6 | 2014-04-18 17:41:01 +0900 | [diff] [blame] | 150 | |
| 151 | path = fdt_getprop(fdt, aliasoff, sername, &len); |
| 152 | if (!path) { |
| 153 | err = len; |
Scott Wood | edd551f | 2015-09-01 22:48:08 -0500 | [diff] [blame] | 154 | goto noalias; |
Masahiro Yamada | a467792c6 | 2014-04-18 17:41:01 +0900 | [diff] [blame] | 155 | } |
| 156 | |
| 157 | /* fdt_setprop may break "path" so we copy it to tmp buffer */ |
| 158 | memcpy(tmp, path, len); |
| 159 | |
| 160 | err = fdt_setprop(fdt, chosenoff, "linux,stdout-path", tmp, len); |
Kumar Gala | 2dc9b4a | 2007-11-26 17:06:15 -0600 | [diff] [blame] | 161 | if (err < 0) |
| 162 | printf("WARNING: could not set linux,stdout-path %s.\n", |
Masahiro Yamada | a467792c6 | 2014-04-18 17:41:01 +0900 | [diff] [blame] | 163 | fdt_strerror(err)); |
Kumar Gala | 2dc9b4a | 2007-11-26 17:06:15 -0600 | [diff] [blame] | 164 | |
| 165 | return err; |
Scott Wood | edd551f | 2015-09-01 22:48:08 -0500 | [diff] [blame] | 166 | |
| 167 | noalias: |
| 168 | printf("WARNING: %s: could not read %s alias: %s\n", |
| 169 | __func__, sername, fdt_strerror(err)); |
| 170 | |
| 171 | return 0; |
Kumar Gala | 2dc9b4a | 2007-11-26 17:06:15 -0600 | [diff] [blame] | 172 | } |
Masahiro Yamada | a467792c6 | 2014-04-18 17:41:01 +0900 | [diff] [blame] | 173 | #else |
| 174 | static int fdt_fixup_stdout(void *fdt, int chosenoff) |
| 175 | { |
| 176 | return 0; |
| 177 | } |
Kumar Gala | 2dc9b4a | 2007-11-26 17:06:15 -0600 | [diff] [blame] | 178 | #endif |
| 179 | |
Masahiro Yamada | b891a34 | 2014-04-18 17:41:04 +0900 | [diff] [blame] | 180 | static inline int fdt_setprop_uxx(void *fdt, int nodeoffset, const char *name, |
| 181 | uint64_t val, int is_u64) |
| 182 | { |
| 183 | if (is_u64) |
| 184 | return fdt_setprop_u64(fdt, nodeoffset, name, val); |
| 185 | else |
| 186 | return fdt_setprop_u32(fdt, nodeoffset, name, (uint32_t)val); |
| 187 | } |
| 188 | |
Paul Kocialkowski | 2c0fbc7 | 2015-05-21 11:27:03 +0200 | [diff] [blame] | 189 | int fdt_root(void *fdt) |
| 190 | { |
| 191 | char *serial; |
| 192 | int err; |
| 193 | |
| 194 | err = fdt_check_header(fdt); |
| 195 | if (err < 0) { |
| 196 | printf("fdt_root: %s\n", fdt_strerror(err)); |
| 197 | return err; |
| 198 | } |
| 199 | |
| 200 | serial = getenv("serial#"); |
| 201 | if (serial) { |
| 202 | err = fdt_setprop(fdt, 0, "serial-number", serial, |
| 203 | strlen(serial) + 1); |
| 204 | |
| 205 | if (err < 0) { |
| 206 | printf("WARNING: could not set serial-number %s.\n", |
| 207 | fdt_strerror(err)); |
| 208 | return err; |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | return 0; |
| 213 | } |
Masahiro Yamada | b891a34 | 2014-04-18 17:41:04 +0900 | [diff] [blame] | 214 | |
Masahiro Yamada | 5b11489 | 2014-04-18 17:40:59 +0900 | [diff] [blame] | 215 | int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end) |
Gerald Van Baren | c4a57ea | 2007-04-06 14:19:43 -0400 | [diff] [blame] | 216 | { |
Masahiro Yamada | b891a34 | 2014-04-18 17:41:04 +0900 | [diff] [blame] | 217 | int nodeoffset; |
Kumar Gala | 99ebc05 | 2008-08-15 08:24:43 -0500 | [diff] [blame] | 218 | int err, j, total; |
Masahiro Yamada | b891a34 | 2014-04-18 17:41:04 +0900 | [diff] [blame] | 219 | int is_u64; |
Kumar Gala | 99ebc05 | 2008-08-15 08:24:43 -0500 | [diff] [blame] | 220 | uint64_t addr, size; |
Gerald Van Baren | c4a57ea | 2007-04-06 14:19:43 -0400 | [diff] [blame] | 221 | |
Masahiro Yamada | 9a3b4de | 2014-04-18 17:41:05 +0900 | [diff] [blame] | 222 | /* just return if the size of initrd is zero */ |
| 223 | if (initrd_start == initrd_end) |
| 224 | return 0; |
| 225 | |
Masahiro Yamada | c020728 | 2014-04-18 17:40:58 +0900 | [diff] [blame] | 226 | /* find or create "/chosen" node. */ |
| 227 | nodeoffset = fdt_find_or_add_subnode(fdt, 0, "chosen"); |
| 228 | if (nodeoffset < 0) |
Kumar Gala | 99ebc05 | 2008-08-15 08:24:43 -0500 | [diff] [blame] | 229 | return nodeoffset; |
Gerald Van Baren | c4a57ea | 2007-04-06 14:19:43 -0400 | [diff] [blame] | 230 | |
Kumar Gala | 99ebc05 | 2008-08-15 08:24:43 -0500 | [diff] [blame] | 231 | total = fdt_num_mem_rsv(fdt); |
| 232 | |
| 233 | /* |
| 234 | * Look for an existing entry and update it. If we don't find |
| 235 | * the entry, we will j be the next available slot. |
| 236 | */ |
| 237 | for (j = 0; j < total; j++) { |
| 238 | err = fdt_get_mem_rsv(fdt, j, &addr, &size); |
| 239 | if (addr == initrd_start) { |
| 240 | fdt_del_mem_rsv(fdt, j); |
| 241 | break; |
Gerald Van Baren | c9502b9 | 2007-04-14 22:51:24 -0400 | [diff] [blame] | 242 | } |
Kumar Gala | 99ebc05 | 2008-08-15 08:24:43 -0500 | [diff] [blame] | 243 | } |
| 244 | |
Grant Likely | c379a56 | 2011-03-28 09:58:55 +0000 | [diff] [blame] | 245 | err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start); |
Kumar Gala | 99ebc05 | 2008-08-15 08:24:43 -0500 | [diff] [blame] | 246 | if (err < 0) { |
| 247 | printf("fdt_initrd: %s\n", fdt_strerror(err)); |
| 248 | return err; |
| 249 | } |
Kumar Gala | c8ab705 | 2007-10-24 11:04:22 -0500 | [diff] [blame] | 250 | |
Simon Glass | 9fbc632 | 2014-10-23 18:58:57 -0600 | [diff] [blame] | 251 | is_u64 = (fdt_address_cells(fdt, 0) == 2); |
David Feng | d985013 | 2013-12-14 11:47:29 +0800 | [diff] [blame] | 252 | |
Masahiro Yamada | b891a34 | 2014-04-18 17:41:04 +0900 | [diff] [blame] | 253 | err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-start", |
| 254 | (uint64_t)initrd_start, is_u64); |
| 255 | |
Masahiro Yamada | 5b11489 | 2014-04-18 17:40:59 +0900 | [diff] [blame] | 256 | if (err < 0) { |
| 257 | printf("WARNING: could not set linux,initrd-start %s.\n", |
| 258 | fdt_strerror(err)); |
| 259 | return err; |
| 260 | } |
Masahiro Yamada | b891a34 | 2014-04-18 17:41:04 +0900 | [diff] [blame] | 261 | |
| 262 | err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-end", |
| 263 | (uint64_t)initrd_end, is_u64); |
| 264 | |
Masahiro Yamada | 5b11489 | 2014-04-18 17:40:59 +0900 | [diff] [blame] | 265 | if (err < 0) { |
| 266 | printf("WARNING: could not set linux,initrd-end %s.\n", |
| 267 | fdt_strerror(err)); |
Kumar Gala | 99ebc05 | 2008-08-15 08:24:43 -0500 | [diff] [blame] | 268 | |
Masahiro Yamada | 5b11489 | 2014-04-18 17:40:59 +0900 | [diff] [blame] | 269 | return err; |
Gerald Van Baren | c4a57ea | 2007-04-06 14:19:43 -0400 | [diff] [blame] | 270 | } |
| 271 | |
Kumar Gala | 99ebc05 | 2008-08-15 08:24:43 -0500 | [diff] [blame] | 272 | return 0; |
| 273 | } |
| 274 | |
Masahiro Yamada | 451c204 | 2014-04-18 17:41:00 +0900 | [diff] [blame] | 275 | int fdt_chosen(void *fdt) |
Kumar Gala | 99ebc05 | 2008-08-15 08:24:43 -0500 | [diff] [blame] | 276 | { |
| 277 | int nodeoffset; |
| 278 | int err; |
| 279 | char *str; /* used to set string properties */ |
Kumar Gala | 99ebc05 | 2008-08-15 08:24:43 -0500 | [diff] [blame] | 280 | |
| 281 | err = fdt_check_header(fdt); |
| 282 | if (err < 0) { |
| 283 | printf("fdt_chosen: %s\n", fdt_strerror(err)); |
| 284 | return err; |
| 285 | } |
| 286 | |
Masahiro Yamada | c020728 | 2014-04-18 17:40:58 +0900 | [diff] [blame] | 287 | /* find or create "/chosen" node. */ |
| 288 | nodeoffset = fdt_find_or_add_subnode(fdt, 0, "chosen"); |
| 289 | if (nodeoffset < 0) |
| 290 | return nodeoffset; |
Gerald Van Baren | c4a57ea | 2007-04-06 14:19:43 -0400 | [diff] [blame] | 291 | |
Gerald Van Baren | c4a57ea | 2007-04-06 14:19:43 -0400 | [diff] [blame] | 292 | str = getenv("bootargs"); |
Masahiro Yamada | a467792c6 | 2014-04-18 17:41:01 +0900 | [diff] [blame] | 293 | if (str) { |
| 294 | err = fdt_setprop(fdt, nodeoffset, "bootargs", str, |
| 295 | strlen(str) + 1); |
| 296 | if (err < 0) { |
Masahiro Yamada | 451c204 | 2014-04-18 17:41:00 +0900 | [diff] [blame] | 297 | printf("WARNING: could not set bootargs %s.\n", |
| 298 | fdt_strerror(err)); |
Masahiro Yamada | a467792c6 | 2014-04-18 17:41:01 +0900 | [diff] [blame] | 299 | return err; |
| 300 | } |
Gerald Van Baren | c4a57ea | 2007-04-06 14:19:43 -0400 | [diff] [blame] | 301 | } |
Kumar Gala | 2dc9b4a | 2007-11-26 17:06:15 -0600 | [diff] [blame] | 302 | |
Masahiro Yamada | a467792c6 | 2014-04-18 17:41:01 +0900 | [diff] [blame] | 303 | return fdt_fixup_stdout(fdt, nodeoffset); |
Gerald Van Baren | c4a57ea | 2007-04-06 14:19:43 -0400 | [diff] [blame] | 304 | } |
| 305 | |
Kumar Gala | 7e64cf8 | 2007-11-03 19:46:28 -0500 | [diff] [blame] | 306 | void do_fixup_by_path(void *fdt, const char *path, const char *prop, |
| 307 | const void *val, int len, int create) |
| 308 | { |
| 309 | #if defined(DEBUG) |
| 310 | int i; |
Kumar Gala | 88f0ca2 | 2008-02-13 15:09:58 -0600 | [diff] [blame] | 311 | debug("Updating property '%s/%s' = ", path, prop); |
Kumar Gala | 7e64cf8 | 2007-11-03 19:46:28 -0500 | [diff] [blame] | 312 | for (i = 0; i < len; i++) |
| 313 | debug(" %.2x", *(u8*)(val+i)); |
| 314 | debug("\n"); |
| 315 | #endif |
| 316 | int rc = fdt_find_and_setprop(fdt, path, prop, val, len, create); |
| 317 | if (rc) |
| 318 | printf("Unable to update property %s:%s, err=%s\n", |
| 319 | path, prop, fdt_strerror(rc)); |
| 320 | } |
| 321 | |
| 322 | void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop, |
| 323 | u32 val, int create) |
| 324 | { |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 325 | fdt32_t tmp = cpu_to_fdt32(val); |
| 326 | do_fixup_by_path(fdt, path, prop, &tmp, sizeof(tmp), create); |
Kumar Gala | 7e64cf8 | 2007-11-03 19:46:28 -0500 | [diff] [blame] | 327 | } |
| 328 | |
Kumar Gala | 7590a19 | 2007-11-21 13:30:15 -0600 | [diff] [blame] | 329 | void do_fixup_by_prop(void *fdt, |
| 330 | const char *pname, const void *pval, int plen, |
| 331 | const char *prop, const void *val, int len, |
| 332 | int create) |
| 333 | { |
| 334 | int off; |
| 335 | #if defined(DEBUG) |
| 336 | int i; |
Kumar Gala | 88f0ca2 | 2008-02-13 15:09:58 -0600 | [diff] [blame] | 337 | debug("Updating property '%s' = ", prop); |
Kumar Gala | 7590a19 | 2007-11-21 13:30:15 -0600 | [diff] [blame] | 338 | for (i = 0; i < len; i++) |
| 339 | debug(" %.2x", *(u8*)(val+i)); |
| 340 | debug("\n"); |
| 341 | #endif |
| 342 | off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen); |
| 343 | while (off != -FDT_ERR_NOTFOUND) { |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 344 | if (create || (fdt_get_property(fdt, off, prop, NULL) != NULL)) |
Kumar Gala | 7590a19 | 2007-11-21 13:30:15 -0600 | [diff] [blame] | 345 | fdt_setprop(fdt, off, prop, val, len); |
| 346 | off = fdt_node_offset_by_prop_value(fdt, off, pname, pval, plen); |
| 347 | } |
| 348 | } |
| 349 | |
| 350 | void do_fixup_by_prop_u32(void *fdt, |
| 351 | const char *pname, const void *pval, int plen, |
| 352 | const char *prop, u32 val, int create) |
| 353 | { |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 354 | fdt32_t tmp = cpu_to_fdt32(val); |
| 355 | do_fixup_by_prop(fdt, pname, pval, plen, prop, &tmp, 4, create); |
Kumar Gala | 7590a19 | 2007-11-21 13:30:15 -0600 | [diff] [blame] | 356 | } |
| 357 | |
| 358 | void do_fixup_by_compat(void *fdt, const char *compat, |
| 359 | const char *prop, const void *val, int len, int create) |
| 360 | { |
| 361 | int off = -1; |
| 362 | #if defined(DEBUG) |
| 363 | int i; |
Kumar Gala | 88f0ca2 | 2008-02-13 15:09:58 -0600 | [diff] [blame] | 364 | debug("Updating property '%s' = ", prop); |
Kumar Gala | 7590a19 | 2007-11-21 13:30:15 -0600 | [diff] [blame] | 365 | for (i = 0; i < len; i++) |
| 366 | debug(" %.2x", *(u8*)(val+i)); |
| 367 | debug("\n"); |
| 368 | #endif |
| 369 | off = fdt_node_offset_by_compatible(fdt, -1, compat); |
| 370 | while (off != -FDT_ERR_NOTFOUND) { |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 371 | if (create || (fdt_get_property(fdt, off, prop, NULL) != NULL)) |
Kumar Gala | 7590a19 | 2007-11-21 13:30:15 -0600 | [diff] [blame] | 372 | fdt_setprop(fdt, off, prop, val, len); |
| 373 | off = fdt_node_offset_by_compatible(fdt, off, compat); |
| 374 | } |
| 375 | } |
| 376 | |
| 377 | void do_fixup_by_compat_u32(void *fdt, const char *compat, |
| 378 | const char *prop, u32 val, int create) |
| 379 | { |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 380 | fdt32_t tmp = cpu_to_fdt32(val); |
| 381 | do_fixup_by_compat(fdt, compat, prop, &tmp, 4, create); |
Kumar Gala | 7590a19 | 2007-11-21 13:30:15 -0600 | [diff] [blame] | 382 | } |
| 383 | |
Masahiro Yamada | a6ae8d3 | 2014-04-18 17:41:03 +0900 | [diff] [blame] | 384 | /* |
| 385 | * fdt_pack_reg - pack address and size array into the "reg"-suitable stream |
| 386 | */ |
Simon Glass | 0058e11 | 2014-10-23 18:58:55 -0600 | [diff] [blame] | 387 | static int fdt_pack_reg(const void *fdt, void *buf, u64 *address, u64 *size, |
| 388 | int n) |
Masahiro Yamada | a6ae8d3 | 2014-04-18 17:41:03 +0900 | [diff] [blame] | 389 | { |
| 390 | int i; |
Hans de Goede | 4c80fb0 | 2014-11-28 14:23:51 +0100 | [diff] [blame] | 391 | int address_cells = fdt_address_cells(fdt, 0); |
| 392 | int size_cells = fdt_size_cells(fdt, 0); |
Masahiro Yamada | a6ae8d3 | 2014-04-18 17:41:03 +0900 | [diff] [blame] | 393 | char *p = buf; |
| 394 | |
| 395 | for (i = 0; i < n; i++) { |
Hans de Goede | 4c80fb0 | 2014-11-28 14:23:51 +0100 | [diff] [blame] | 396 | if (address_cells == 2) |
Masahiro Yamada | a6ae8d3 | 2014-04-18 17:41:03 +0900 | [diff] [blame] | 397 | *(fdt64_t *)p = cpu_to_fdt64(address[i]); |
| 398 | else |
| 399 | *(fdt32_t *)p = cpu_to_fdt32(address[i]); |
Hans de Goede | 4c80fb0 | 2014-11-28 14:23:51 +0100 | [diff] [blame] | 400 | p += 4 * address_cells; |
Masahiro Yamada | a6ae8d3 | 2014-04-18 17:41:03 +0900 | [diff] [blame] | 401 | |
Hans de Goede | 4c80fb0 | 2014-11-28 14:23:51 +0100 | [diff] [blame] | 402 | if (size_cells == 2) |
Masahiro Yamada | a6ae8d3 | 2014-04-18 17:41:03 +0900 | [diff] [blame] | 403 | *(fdt64_t *)p = cpu_to_fdt64(size[i]); |
| 404 | else |
| 405 | *(fdt32_t *)p = cpu_to_fdt32(size[i]); |
Hans de Goede | 4c80fb0 | 2014-11-28 14:23:51 +0100 | [diff] [blame] | 406 | p += 4 * size_cells; |
Masahiro Yamada | a6ae8d3 | 2014-04-18 17:41:03 +0900 | [diff] [blame] | 407 | } |
| 408 | |
| 409 | return p - (char *)buf; |
| 410 | } |
| 411 | |
Doug Anderson | 8e4ed9a | 2013-04-30 10:22:00 +0000 | [diff] [blame] | 412 | #ifdef CONFIG_NR_DRAM_BANKS |
| 413 | #define MEMORY_BANKS_MAX CONFIG_NR_DRAM_BANKS |
| 414 | #else |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 415 | #define MEMORY_BANKS_MAX 4 |
Doug Anderson | 8e4ed9a | 2013-04-30 10:22:00 +0000 | [diff] [blame] | 416 | #endif |
John Rigby | b4ae942 | 2010-10-13 13:57:33 -0600 | [diff] [blame] | 417 | int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks) |
| 418 | { |
| 419 | int err, nodeoffset; |
Masahiro Yamada | a6ae8d3 | 2014-04-18 17:41:03 +0900 | [diff] [blame] | 420 | int len; |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 421 | u8 tmp[MEMORY_BANKS_MAX * 16]; /* Up to 64-bit address + 64-bit size */ |
Kumar Gala | 0db72ed | 2007-11-26 14:57:45 -0600 | [diff] [blame] | 422 | |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 423 | if (banks > MEMORY_BANKS_MAX) { |
| 424 | printf("%s: num banks %d exceeds hardcoded limit %d." |
| 425 | " Recompile with higher MEMORY_BANKS_MAX?\n", |
| 426 | __FUNCTION__, banks, MEMORY_BANKS_MAX); |
| 427 | return -1; |
| 428 | } |
| 429 | |
Kumar Gala | 0db72ed | 2007-11-26 14:57:45 -0600 | [diff] [blame] | 430 | err = fdt_check_header(blob); |
| 431 | if (err < 0) { |
| 432 | printf("%s: %s\n", __FUNCTION__, fdt_strerror(err)); |
| 433 | return err; |
| 434 | } |
| 435 | |
Masahiro Yamada | c020728 | 2014-04-18 17:40:58 +0900 | [diff] [blame] | 436 | /* find or create "/memory" node. */ |
| 437 | nodeoffset = fdt_find_or_add_subnode(blob, 0, "memory"); |
| 438 | if (nodeoffset < 0) |
Miao Yan | 0904eb2 | 2013-11-28 17:51:39 +0800 | [diff] [blame] | 439 | return nodeoffset; |
Masahiro Yamada | c020728 | 2014-04-18 17:40:58 +0900 | [diff] [blame] | 440 | |
Kumar Gala | 0db72ed | 2007-11-26 14:57:45 -0600 | [diff] [blame] | 441 | err = fdt_setprop(blob, nodeoffset, "device_type", "memory", |
| 442 | sizeof("memory")); |
| 443 | if (err < 0) { |
| 444 | printf("WARNING: could not set %s %s.\n", "device_type", |
| 445 | fdt_strerror(err)); |
| 446 | return err; |
| 447 | } |
| 448 | |
Andre Przywara | 3d2d441 | 2015-06-21 00:29:54 +0100 | [diff] [blame] | 449 | if (!banks) |
| 450 | return 0; |
| 451 | |
Masahiro Yamada | a6ae8d3 | 2014-04-18 17:41:03 +0900 | [diff] [blame] | 452 | len = fdt_pack_reg(blob, tmp, start, size, banks); |
Kumar Gala | 0db72ed | 2007-11-26 14:57:45 -0600 | [diff] [blame] | 453 | |
| 454 | err = fdt_setprop(blob, nodeoffset, "reg", tmp, len); |
| 455 | if (err < 0) { |
| 456 | printf("WARNING: could not set %s %s.\n", |
| 457 | "reg", fdt_strerror(err)); |
| 458 | return err; |
| 459 | } |
| 460 | return 0; |
| 461 | } |
| 462 | |
John Rigby | b4ae942 | 2010-10-13 13:57:33 -0600 | [diff] [blame] | 463 | int fdt_fixup_memory(void *blob, u64 start, u64 size) |
| 464 | { |
| 465 | return fdt_fixup_memory_banks(blob, &start, &size, 1); |
| 466 | } |
| 467 | |
Kumar Gala | fabda92 | 2008-08-19 15:41:18 -0500 | [diff] [blame] | 468 | void fdt_fixup_ethernet(void *fdt) |
Kumar Gala | 2269910 | 2007-11-21 11:11:03 -0600 | [diff] [blame] | 469 | { |
Lev Iserovich | cde7761 | 2016-01-07 18:04:16 -0500 | [diff] [blame] | 470 | int i, j, prop; |
Bin Meng | bfb93cc | 2015-11-03 04:24:41 -0800 | [diff] [blame] | 471 | char *tmp, *end; |
Stephen Warren | 7c15c77 | 2013-05-27 18:01:19 +0000 | [diff] [blame] | 472 | char mac[16]; |
Kumar Gala | 2269910 | 2007-11-21 11:11:03 -0600 | [diff] [blame] | 473 | const char *path; |
Kumar Gala | fabda92 | 2008-08-19 15:41:18 -0500 | [diff] [blame] | 474 | unsigned char mac_addr[6]; |
Bin Meng | bfb93cc | 2015-11-03 04:24:41 -0800 | [diff] [blame] | 475 | int offset; |
Kumar Gala | 2269910 | 2007-11-21 11:11:03 -0600 | [diff] [blame] | 476 | |
Lev Iserovich | cde7761 | 2016-01-07 18:04:16 -0500 | [diff] [blame] | 477 | if (fdt_path_offset(fdt, "/aliases") < 0) |
Kumar Gala | fabda92 | 2008-08-19 15:41:18 -0500 | [diff] [blame] | 478 | return; |
| 479 | |
Lev Iserovich | cde7761 | 2016-01-07 18:04:16 -0500 | [diff] [blame] | 480 | /* Cycle through all aliases */ |
| 481 | for (prop = 0; ; prop++) { |
Bin Meng | bfb93cc | 2015-11-03 04:24:41 -0800 | [diff] [blame] | 482 | const char *name; |
| 483 | int len = strlen("ethernet"); |
Dan Murphy | 0b9bf27 | 2013-10-02 14:00:15 -0500 | [diff] [blame] | 484 | |
Lev Iserovich | cde7761 | 2016-01-07 18:04:16 -0500 | [diff] [blame] | 485 | /* FDT might have been edited, recompute the offset */ |
| 486 | offset = fdt_first_property_offset(fdt, |
| 487 | fdt_path_offset(fdt, "/aliases")); |
| 488 | /* Select property number 'prop' */ |
| 489 | for (i = 0; i < prop; i++) |
| 490 | offset = fdt_next_property_offset(fdt, offset); |
| 491 | |
| 492 | if (offset < 0) |
| 493 | break; |
| 494 | |
Bin Meng | bfb93cc | 2015-11-03 04:24:41 -0800 | [diff] [blame] | 495 | path = fdt_getprop_by_offset(fdt, offset, &name, NULL); |
| 496 | if (!strncmp(name, "ethernet", len)) { |
| 497 | i = trailing_strtol(name); |
| 498 | if (i != -1) { |
| 499 | if (i == 0) |
| 500 | strcpy(mac, "ethaddr"); |
| 501 | else |
| 502 | sprintf(mac, "eth%daddr", i); |
| 503 | } else { |
| 504 | continue; |
| 505 | } |
| 506 | tmp = getenv(mac); |
| 507 | if (!tmp) |
| 508 | continue; |
Kumar Gala | fabda92 | 2008-08-19 15:41:18 -0500 | [diff] [blame] | 509 | |
Bin Meng | bfb93cc | 2015-11-03 04:24:41 -0800 | [diff] [blame] | 510 | for (j = 0; j < 6; j++) { |
| 511 | mac_addr[j] = tmp ? |
| 512 | simple_strtoul(tmp, &end, 16) : 0; |
| 513 | if (tmp) |
| 514 | tmp = (*end) ? end + 1 : end; |
| 515 | } |
Kumar Gala | fabda92 | 2008-08-19 15:41:18 -0500 | [diff] [blame] | 516 | |
Bin Meng | bfb93cc | 2015-11-03 04:24:41 -0800 | [diff] [blame] | 517 | do_fixup_by_path(fdt, path, "mac-address", |
| 518 | &mac_addr, 6, 0); |
| 519 | do_fixup_by_path(fdt, path, "local-mac-address", |
| 520 | &mac_addr, 6, 1); |
| 521 | } |
Kumar Gala | 2269910 | 2007-11-21 11:11:03 -0600 | [diff] [blame] | 522 | } |
| 523 | } |
Anton Vorontsov | 07e6091 | 2008-03-14 23:20:18 +0300 | [diff] [blame] | 524 | |
Kumar Gala | f2f58c5 | 2008-08-15 08:24:42 -0500 | [diff] [blame] | 525 | /* Resize the fdt to its actual size + a bit of padding */ |
Hannes Schmelzer | d3dbac8 | 2016-09-20 18:10:43 +0200 | [diff] [blame] | 526 | int fdt_shrink_to_minimum(void *blob, uint extrasize) |
Kumar Gala | f2f58c5 | 2008-08-15 08:24:42 -0500 | [diff] [blame] | 527 | { |
| 528 | int i; |
| 529 | uint64_t addr, size; |
| 530 | int total, ret; |
| 531 | uint actualsize; |
| 532 | |
| 533 | if (!blob) |
| 534 | return 0; |
| 535 | |
| 536 | total = fdt_num_mem_rsv(blob); |
| 537 | for (i = 0; i < total; i++) { |
| 538 | fdt_get_mem_rsv(blob, i, &addr, &size); |
Simon Glass | fc95324 | 2011-09-17 06:48:58 +0000 | [diff] [blame] | 539 | if (addr == (uintptr_t)blob) { |
Kumar Gala | f2f58c5 | 2008-08-15 08:24:42 -0500 | [diff] [blame] | 540 | fdt_del_mem_rsv(blob, i); |
| 541 | break; |
| 542 | } |
| 543 | } |
| 544 | |
Peter Korsgaard | 9c7b705 | 2008-10-28 08:26:52 +0100 | [diff] [blame] | 545 | /* |
| 546 | * Calculate the actual size of the fdt |
Feng Wang | ba31fb6 | 2010-08-03 16:22:43 +0200 | [diff] [blame] | 547 | * plus the size needed for 5 fdt_add_mem_rsv, one |
| 548 | * for the fdt itself and 4 for a possible initrd |
| 549 | * ((initrd-start + initrd-end) * 2 (name & value)) |
Peter Korsgaard | 9c7b705 | 2008-10-28 08:26:52 +0100 | [diff] [blame] | 550 | */ |
Kumar Gala | f2f58c5 | 2008-08-15 08:24:42 -0500 | [diff] [blame] | 551 | actualsize = fdt_off_dt_strings(blob) + |
Feng Wang | ba31fb6 | 2010-08-03 16:22:43 +0200 | [diff] [blame] | 552 | fdt_size_dt_strings(blob) + 5 * sizeof(struct fdt_reserve_entry); |
Kumar Gala | f2f58c5 | 2008-08-15 08:24:42 -0500 | [diff] [blame] | 553 | |
Hannes Schmelzer | d3dbac8 | 2016-09-20 18:10:43 +0200 | [diff] [blame] | 554 | actualsize += extrasize; |
Kumar Gala | f2f58c5 | 2008-08-15 08:24:42 -0500 | [diff] [blame] | 555 | /* Make it so the fdt ends on a page boundary */ |
Simon Glass | fc95324 | 2011-09-17 06:48:58 +0000 | [diff] [blame] | 556 | actualsize = ALIGN(actualsize + ((uintptr_t)blob & 0xfff), 0x1000); |
| 557 | actualsize = actualsize - ((uintptr_t)blob & 0xfff); |
Kumar Gala | f2f58c5 | 2008-08-15 08:24:42 -0500 | [diff] [blame] | 558 | |
| 559 | /* Change the fdt header to reflect the correct size */ |
| 560 | fdt_set_totalsize(blob, actualsize); |
| 561 | |
| 562 | /* Add the new reservation */ |
Simon Glass | fc95324 | 2011-09-17 06:48:58 +0000 | [diff] [blame] | 563 | ret = fdt_add_mem_rsv(blob, (uintptr_t)blob, actualsize); |
Kumar Gala | f2f58c5 | 2008-08-15 08:24:42 -0500 | [diff] [blame] | 564 | if (ret < 0) |
| 565 | return ret; |
| 566 | |
| 567 | return actualsize; |
| 568 | } |
Kumar Gala | e0475cd | 2008-10-22 23:33:56 -0500 | [diff] [blame] | 569 | |
| 570 | #ifdef CONFIG_PCI |
Kumar Gala | baf4189 | 2009-08-05 09:03:54 -0500 | [diff] [blame] | 571 | #define CONFIG_SYS_PCI_NR_INBOUND_WIN 4 |
Kumar Gala | e0475cd | 2008-10-22 23:33:56 -0500 | [diff] [blame] | 572 | |
| 573 | #define FDT_PCI_PREFETCH (0x40000000) |
| 574 | #define FDT_PCI_MEM32 (0x02000000) |
| 575 | #define FDT_PCI_IO (0x01000000) |
| 576 | #define FDT_PCI_MEM64 (0x03000000) |
| 577 | |
| 578 | int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) { |
| 579 | |
| 580 | int addrcell, sizecell, len, r; |
| 581 | u32 *dma_range; |
| 582 | /* sized based on pci addr cells, size-cells, & address-cells */ |
| 583 | u32 dma_ranges[(3 + 2 + 2) * CONFIG_SYS_PCI_NR_INBOUND_WIN]; |
| 584 | |
| 585 | addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1); |
| 586 | sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1); |
| 587 | |
| 588 | dma_range = &dma_ranges[0]; |
| 589 | for (r = 0; r < hose->region_count; r++) { |
| 590 | u64 bus_start, phys_start, size; |
| 591 | |
Kumar Gala | efa1f1d | 2009-02-06 09:49:31 -0600 | [diff] [blame] | 592 | /* skip if !PCI_REGION_SYS_MEMORY */ |
| 593 | if (!(hose->regions[r].flags & PCI_REGION_SYS_MEMORY)) |
Kumar Gala | e0475cd | 2008-10-22 23:33:56 -0500 | [diff] [blame] | 594 | continue; |
| 595 | |
| 596 | bus_start = (u64)hose->regions[r].bus_start; |
| 597 | phys_start = (u64)hose->regions[r].phys_start; |
| 598 | size = (u64)hose->regions[r].size; |
| 599 | |
| 600 | dma_range[0] = 0; |
Kumar Gala | baf4189 | 2009-08-05 09:03:54 -0500 | [diff] [blame] | 601 | if (size >= 0x100000000ull) |
Kumar Gala | e0475cd | 2008-10-22 23:33:56 -0500 | [diff] [blame] | 602 | dma_range[0] |= FDT_PCI_MEM64; |
| 603 | else |
| 604 | dma_range[0] |= FDT_PCI_MEM32; |
| 605 | if (hose->regions[r].flags & PCI_REGION_PREFETCH) |
| 606 | dma_range[0] |= FDT_PCI_PREFETCH; |
| 607 | #ifdef CONFIG_SYS_PCI_64BIT |
| 608 | dma_range[1] = bus_start >> 32; |
| 609 | #else |
| 610 | dma_range[1] = 0; |
| 611 | #endif |
| 612 | dma_range[2] = bus_start & 0xffffffff; |
| 613 | |
| 614 | if (addrcell == 2) { |
| 615 | dma_range[3] = phys_start >> 32; |
| 616 | dma_range[4] = phys_start & 0xffffffff; |
| 617 | } else { |
| 618 | dma_range[3] = phys_start & 0xffffffff; |
| 619 | } |
| 620 | |
| 621 | if (sizecell == 2) { |
| 622 | dma_range[3 + addrcell + 0] = size >> 32; |
| 623 | dma_range[3 + addrcell + 1] = size & 0xffffffff; |
| 624 | } else { |
| 625 | dma_range[3 + addrcell + 0] = size & 0xffffffff; |
| 626 | } |
| 627 | |
| 628 | dma_range += (3 + addrcell + sizecell); |
| 629 | } |
| 630 | |
| 631 | len = dma_range - &dma_ranges[0]; |
| 632 | if (len) |
| 633 | fdt_setprop(blob, phb_off, "dma-ranges", &dma_ranges[0], len*4); |
| 634 | |
| 635 | return 0; |
| 636 | } |
| 637 | #endif |
Stefan Roese | a0f10c9 | 2009-10-21 11:59:52 +0200 | [diff] [blame] | 638 | |
| 639 | #ifdef CONFIG_FDT_FIXUP_NOR_FLASH_SIZE |
| 640 | /* |
Stefan Roese | 412a71a | 2010-09-16 14:01:53 +0200 | [diff] [blame] | 641 | * Provide a weak default function to return the flash bank size. |
| 642 | * There might be multiple non-identical flash chips connected to one |
| 643 | * chip-select, so we need to pass an index as well. |
| 644 | */ |
| 645 | u32 __flash_get_bank_size(int cs, int idx) |
| 646 | { |
| 647 | extern flash_info_t flash_info[]; |
| 648 | |
| 649 | /* |
| 650 | * As default, a simple 1:1 mapping is provided. Boards with |
| 651 | * a different mapping need to supply a board specific mapping |
| 652 | * routine. |
| 653 | */ |
| 654 | return flash_info[cs].size; |
| 655 | } |
| 656 | u32 flash_get_bank_size(int cs, int idx) |
| 657 | __attribute__((weak, alias("__flash_get_bank_size"))); |
| 658 | |
| 659 | /* |
Stefan Roese | a0f10c9 | 2009-10-21 11:59:52 +0200 | [diff] [blame] | 660 | * This function can be used to update the size in the "reg" property |
Stefan Roese | 412a71a | 2010-09-16 14:01:53 +0200 | [diff] [blame] | 661 | * of all NOR FLASH device nodes. This is necessary for boards with |
Stefan Roese | a0f10c9 | 2009-10-21 11:59:52 +0200 | [diff] [blame] | 662 | * non-fixed NOR FLASH sizes. |
| 663 | */ |
Stefan Roese | 412a71a | 2010-09-16 14:01:53 +0200 | [diff] [blame] | 664 | int fdt_fixup_nor_flash_size(void *blob) |
Stefan Roese | a0f10c9 | 2009-10-21 11:59:52 +0200 | [diff] [blame] | 665 | { |
| 666 | char compat[][16] = { "cfi-flash", "jedec-flash" }; |
| 667 | int off; |
| 668 | int len; |
| 669 | struct fdt_property *prop; |
Stefan Roese | 442cd1a | 2010-09-24 13:51:50 +0200 | [diff] [blame] | 670 | u32 *reg, *reg2; |
Stefan Roese | a0f10c9 | 2009-10-21 11:59:52 +0200 | [diff] [blame] | 671 | int i; |
| 672 | |
| 673 | for (i = 0; i < 2; i++) { |
| 674 | off = fdt_node_offset_by_compatible(blob, -1, compat[i]); |
| 675 | while (off != -FDT_ERR_NOTFOUND) { |
Stefan Roese | 412a71a | 2010-09-16 14:01:53 +0200 | [diff] [blame] | 676 | int idx; |
| 677 | |
Stefan Roese | a0f10c9 | 2009-10-21 11:59:52 +0200 | [diff] [blame] | 678 | /* |
Stefan Roese | 412a71a | 2010-09-16 14:01:53 +0200 | [diff] [blame] | 679 | * Found one compatible node, so fixup the size |
| 680 | * int its reg properties |
Stefan Roese | a0f10c9 | 2009-10-21 11:59:52 +0200 | [diff] [blame] | 681 | */ |
| 682 | prop = fdt_get_property_w(blob, off, "reg", &len); |
| 683 | if (prop) { |
Stefan Roese | 412a71a | 2010-09-16 14:01:53 +0200 | [diff] [blame] | 684 | int tuple_size = 3 * sizeof(reg); |
| 685 | |
| 686 | /* |
| 687 | * There might be multiple reg-tuples, |
| 688 | * so loop through them all |
| 689 | */ |
Stefan Roese | 442cd1a | 2010-09-24 13:51:50 +0200 | [diff] [blame] | 690 | reg = reg2 = (u32 *)&prop->data[0]; |
| 691 | for (idx = 0; idx < (len / tuple_size); idx++) { |
Stefan Roese | 412a71a | 2010-09-16 14:01:53 +0200 | [diff] [blame] | 692 | /* |
| 693 | * Update size in reg property |
| 694 | */ |
| 695 | reg[2] = flash_get_bank_size(reg[0], |
| 696 | idx); |
Stefan Roese | 442cd1a | 2010-09-24 13:51:50 +0200 | [diff] [blame] | 697 | |
| 698 | /* |
| 699 | * Point to next reg tuple |
| 700 | */ |
| 701 | reg += 3; |
Stefan Roese | a0f10c9 | 2009-10-21 11:59:52 +0200 | [diff] [blame] | 702 | } |
Stefan Roese | 442cd1a | 2010-09-24 13:51:50 +0200 | [diff] [blame] | 703 | |
| 704 | fdt_setprop(blob, off, "reg", reg2, len); |
Stefan Roese | a0f10c9 | 2009-10-21 11:59:52 +0200 | [diff] [blame] | 705 | } |
| 706 | |
| 707 | /* Move to next compatible node */ |
| 708 | off = fdt_node_offset_by_compatible(blob, off, |
| 709 | compat[i]); |
| 710 | } |
| 711 | } |
| 712 | |
Stefan Roese | 412a71a | 2010-09-16 14:01:53 +0200 | [diff] [blame] | 713 | return 0; |
Stefan Roese | a0f10c9 | 2009-10-21 11:59:52 +0200 | [diff] [blame] | 714 | } |
| 715 | #endif |
Anatolij Gustschin | 6c44c38 | 2010-03-16 17:10:05 +0100 | [diff] [blame] | 716 | |
Matthew McClintock | acda3a4 | 2010-10-13 13:39:26 +0200 | [diff] [blame] | 717 | int fdt_increase_size(void *fdt, int add_len) |
| 718 | { |
| 719 | int newlen; |
| 720 | |
| 721 | newlen = fdt_totalsize(fdt) + add_len; |
| 722 | |
| 723 | /* Open in place with a new len */ |
| 724 | return fdt_open_into(fdt, fdt, newlen); |
| 725 | } |
| 726 | |
Anatolij Gustschin | 6c44c38 | 2010-03-16 17:10:05 +0100 | [diff] [blame] | 727 | #ifdef CONFIG_FDT_FIXUP_PARTITIONS |
| 728 | #include <jffs2/load_kernel.h> |
| 729 | #include <mtd_node.h> |
| 730 | |
| 731 | struct reg_cell { |
| 732 | unsigned int r0; |
| 733 | unsigned int r1; |
| 734 | }; |
| 735 | |
| 736 | int fdt_del_subnodes(const void *blob, int parent_offset) |
| 737 | { |
| 738 | int off, ndepth; |
| 739 | int ret; |
| 740 | |
| 741 | for (ndepth = 0, off = fdt_next_node(blob, parent_offset, &ndepth); |
| 742 | (off >= 0) && (ndepth > 0); |
| 743 | off = fdt_next_node(blob, off, &ndepth)) { |
| 744 | if (ndepth == 1) { |
| 745 | debug("delete %s: offset: %x\n", |
| 746 | fdt_get_name(blob, off, 0), off); |
| 747 | ret = fdt_del_node((void *)blob, off); |
| 748 | if (ret < 0) { |
| 749 | printf("Can't delete node: %s\n", |
| 750 | fdt_strerror(ret)); |
| 751 | return ret; |
| 752 | } else { |
| 753 | ndepth = 0; |
| 754 | off = parent_offset; |
| 755 | } |
| 756 | } |
| 757 | } |
| 758 | return 0; |
| 759 | } |
| 760 | |
Anatolij Gustschin | 6c44c38 | 2010-03-16 17:10:05 +0100 | [diff] [blame] | 761 | int fdt_del_partitions(void *blob, int parent_offset) |
| 762 | { |
| 763 | const void *prop; |
| 764 | int ndepth = 0; |
| 765 | int off; |
| 766 | int ret; |
| 767 | |
| 768 | off = fdt_next_node(blob, parent_offset, &ndepth); |
| 769 | if (off > 0 && ndepth == 1) { |
| 770 | prop = fdt_getprop(blob, off, "label", NULL); |
| 771 | if (prop == NULL) { |
| 772 | /* |
| 773 | * Could not find label property, nand {}; node? |
| 774 | * Check subnode, delete partitions there if any. |
| 775 | */ |
| 776 | return fdt_del_partitions(blob, off); |
| 777 | } else { |
| 778 | ret = fdt_del_subnodes(blob, parent_offset); |
| 779 | if (ret < 0) { |
| 780 | printf("Can't remove subnodes: %s\n", |
| 781 | fdt_strerror(ret)); |
| 782 | return ret; |
| 783 | } |
| 784 | } |
| 785 | } |
| 786 | return 0; |
| 787 | } |
| 788 | |
| 789 | int fdt_node_set_part_info(void *blob, int parent_offset, |
| 790 | struct mtd_device *dev) |
| 791 | { |
| 792 | struct list_head *pentry; |
| 793 | struct part_info *part; |
| 794 | struct reg_cell cell; |
| 795 | int off, ndepth = 0; |
| 796 | int part_num, ret; |
| 797 | char buf[64]; |
| 798 | |
| 799 | ret = fdt_del_partitions(blob, parent_offset); |
| 800 | if (ret < 0) |
| 801 | return ret; |
| 802 | |
| 803 | /* |
| 804 | * Check if it is nand {}; subnode, adjust |
| 805 | * the offset in this case |
| 806 | */ |
| 807 | off = fdt_next_node(blob, parent_offset, &ndepth); |
| 808 | if (off > 0 && ndepth == 1) |
| 809 | parent_offset = off; |
| 810 | |
| 811 | part_num = 0; |
| 812 | list_for_each_prev(pentry, &dev->parts) { |
| 813 | int newoff; |
| 814 | |
| 815 | part = list_entry(pentry, struct part_info, link); |
| 816 | |
Scott Wood | efe7f30 | 2013-10-15 17:41:27 -0500 | [diff] [blame] | 817 | debug("%2d: %-20s0x%08llx\t0x%08llx\t%d\n", |
Anatolij Gustschin | 6c44c38 | 2010-03-16 17:10:05 +0100 | [diff] [blame] | 818 | part_num, part->name, part->size, |
| 819 | part->offset, part->mask_flags); |
| 820 | |
Scott Wood | efe7f30 | 2013-10-15 17:41:27 -0500 | [diff] [blame] | 821 | sprintf(buf, "partition@%llx", part->offset); |
Anatolij Gustschin | 6c44c38 | 2010-03-16 17:10:05 +0100 | [diff] [blame] | 822 | add_sub: |
| 823 | ret = fdt_add_subnode(blob, parent_offset, buf); |
| 824 | if (ret == -FDT_ERR_NOSPACE) { |
| 825 | ret = fdt_increase_size(blob, 512); |
| 826 | if (!ret) |
| 827 | goto add_sub; |
| 828 | else |
| 829 | goto err_size; |
| 830 | } else if (ret < 0) { |
| 831 | printf("Can't add partition node: %s\n", |
| 832 | fdt_strerror(ret)); |
| 833 | return ret; |
| 834 | } |
| 835 | newoff = ret; |
| 836 | |
| 837 | /* Check MTD_WRITEABLE_CMD flag */ |
| 838 | if (part->mask_flags & 1) { |
| 839 | add_ro: |
| 840 | ret = fdt_setprop(blob, newoff, "read_only", NULL, 0); |
| 841 | if (ret == -FDT_ERR_NOSPACE) { |
| 842 | ret = fdt_increase_size(blob, 512); |
| 843 | if (!ret) |
| 844 | goto add_ro; |
| 845 | else |
| 846 | goto err_size; |
| 847 | } else if (ret < 0) |
| 848 | goto err_prop; |
| 849 | } |
| 850 | |
| 851 | cell.r0 = cpu_to_fdt32(part->offset); |
| 852 | cell.r1 = cpu_to_fdt32(part->size); |
| 853 | add_reg: |
| 854 | ret = fdt_setprop(blob, newoff, "reg", &cell, sizeof(cell)); |
| 855 | if (ret == -FDT_ERR_NOSPACE) { |
| 856 | ret = fdt_increase_size(blob, 512); |
| 857 | if (!ret) |
| 858 | goto add_reg; |
| 859 | else |
| 860 | goto err_size; |
| 861 | } else if (ret < 0) |
| 862 | goto err_prop; |
| 863 | |
| 864 | add_label: |
| 865 | ret = fdt_setprop_string(blob, newoff, "label", part->name); |
| 866 | if (ret == -FDT_ERR_NOSPACE) { |
| 867 | ret = fdt_increase_size(blob, 512); |
| 868 | if (!ret) |
| 869 | goto add_label; |
| 870 | else |
| 871 | goto err_size; |
| 872 | } else if (ret < 0) |
| 873 | goto err_prop; |
| 874 | |
| 875 | part_num++; |
| 876 | } |
| 877 | return 0; |
| 878 | err_size: |
| 879 | printf("Can't increase blob size: %s\n", fdt_strerror(ret)); |
| 880 | return ret; |
| 881 | err_prop: |
| 882 | printf("Can't add property: %s\n", fdt_strerror(ret)); |
| 883 | return ret; |
| 884 | } |
| 885 | |
| 886 | /* |
| 887 | * Update partitions in nor/nand nodes using info from |
| 888 | * mtdparts environment variable. The nodes to update are |
| 889 | * specified by node_info structure which contains mtd device |
| 890 | * type and compatible string: E. g. the board code in |
| 891 | * ft_board_setup() could use: |
| 892 | * |
| 893 | * struct node_info nodes[] = { |
| 894 | * { "fsl,mpc5121-nfc", MTD_DEV_TYPE_NAND, }, |
| 895 | * { "cfi-flash", MTD_DEV_TYPE_NOR, }, |
| 896 | * }; |
| 897 | * |
| 898 | * fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes)); |
| 899 | */ |
| 900 | void fdt_fixup_mtdparts(void *blob, void *node_info, int node_info_size) |
| 901 | { |
| 902 | struct node_info *ni = node_info; |
| 903 | struct mtd_device *dev; |
| 904 | char *parts; |
| 905 | int i, idx; |
| 906 | int noff; |
| 907 | |
| 908 | parts = getenv("mtdparts"); |
| 909 | if (!parts) |
| 910 | return; |
| 911 | |
| 912 | if (mtdparts_init() != 0) |
| 913 | return; |
| 914 | |
| 915 | for (i = 0; i < node_info_size; i++) { |
| 916 | idx = 0; |
| 917 | noff = fdt_node_offset_by_compatible(blob, -1, ni[i].compat); |
| 918 | while (noff != -FDT_ERR_NOTFOUND) { |
| 919 | debug("%s: %s, mtd dev type %d\n", |
| 920 | fdt_get_name(blob, noff, 0), |
| 921 | ni[i].compat, ni[i].type); |
| 922 | dev = device_find(ni[i].type, idx++); |
| 923 | if (dev) { |
| 924 | if (fdt_node_set_part_info(blob, noff, dev)) |
| 925 | return; /* return on error */ |
| 926 | } |
| 927 | |
| 928 | /* Jump to next flash node */ |
| 929 | noff = fdt_node_offset_by_compatible(blob, noff, |
| 930 | ni[i].compat); |
| 931 | } |
| 932 | } |
| 933 | } |
| 934 | #endif |
Kumar Gala | f4ad4fd | 2010-03-30 10:19:26 -0500 | [diff] [blame] | 935 | |
| 936 | void fdt_del_node_and_alias(void *blob, const char *alias) |
| 937 | { |
| 938 | int off = fdt_path_offset(blob, alias); |
| 939 | |
| 940 | if (off < 0) |
| 941 | return; |
| 942 | |
| 943 | fdt_del_node(blob, off); |
| 944 | |
| 945 | off = fdt_path_offset(blob, "/aliases"); |
| 946 | fdt_delprop(blob, off, alias); |
| 947 | } |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 948 | |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 949 | /* Max address size we deal with */ |
| 950 | #define OF_MAX_ADDR_CELLS 4 |
Bin Meng | d9a0093 | 2015-12-07 01:39:47 -0800 | [diff] [blame] | 951 | #define OF_BAD_ADDR FDT_ADDR_T_NONE |
Przemyslaw Marczak | f4d337c | 2016-01-12 15:40:44 +0100 | [diff] [blame] | 952 | #define OF_CHECK_COUNTS(na, ns) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS && \ |
| 953 | (ns) > 0) |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 954 | |
| 955 | /* Debug utility */ |
| 956 | #ifdef DEBUG |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 957 | static void of_dump_addr(const char *s, const fdt32_t *addr, int na) |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 958 | { |
| 959 | printf("%s", s); |
| 960 | while(na--) |
| 961 | printf(" %08x", *(addr++)); |
| 962 | printf("\n"); |
| 963 | } |
| 964 | #else |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 965 | static void of_dump_addr(const char *s, const fdt32_t *addr, int na) { } |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 966 | #endif |
| 967 | |
Paul Burton | dbef2f0 | 2016-05-17 07:43:24 +0100 | [diff] [blame] | 968 | /** |
| 969 | * struct of_bus - Callbacks for bus specific translators |
Paul Burton | 03f08c5 | 2016-05-17 07:43:25 +0100 | [diff] [blame] | 970 | * @name: A string used to identify this bus in debug output. |
| 971 | * @addresses: The name of the DT property from which addresses are |
| 972 | * to be read, typically "reg". |
Paul Burton | dbef2f0 | 2016-05-17 07:43:24 +0100 | [diff] [blame] | 973 | * @match: Return non-zero if the node whose parent is at |
| 974 | * parentoffset in the FDT blob corresponds to a bus |
| 975 | * of this type, otherwise return zero. If NULL a match |
| 976 | * is assumed. |
Paul Burton | 03f08c5 | 2016-05-17 07:43:25 +0100 | [diff] [blame] | 977 | * @count_cells:Count how many cells (be32 values) a node whose parent |
| 978 | * is at parentoffset in the FDT blob will require to |
| 979 | * represent its address (written to *addrc) & size |
| 980 | * (written to *sizec). |
| 981 | * @map: Map the address addr from the address space of this |
| 982 | * bus to that of its parent, making use of the ranges |
| 983 | * read from DT to an array at range. na and ns are the |
| 984 | * number of cells (be32 values) used to hold and address |
| 985 | * or size, respectively, for this bus. pna is the number |
| 986 | * of cells used to hold an address for the parent bus. |
| 987 | * Returns the address in the address space of the parent |
| 988 | * bus. |
| 989 | * @translate: Update the value of the address cells at addr within an |
| 990 | * FDT by adding offset to it. na specifies the number of |
| 991 | * cells used to hold the address being translated. Returns |
| 992 | * zero on success, non-zero on error. |
Paul Burton | dbef2f0 | 2016-05-17 07:43:24 +0100 | [diff] [blame] | 993 | * |
| 994 | * Each bus type will include a struct of_bus in the of_busses array, |
| 995 | * providing implementations of some or all of the functions used to |
| 996 | * match the bus & handle address translation for its children. |
| 997 | */ |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 998 | struct of_bus { |
| 999 | const char *name; |
| 1000 | const char *addresses; |
Stephen Warren | c99581b | 2016-08-05 09:47:50 -0600 | [diff] [blame] | 1001 | int (*match)(const void *blob, int parentoffset); |
| 1002 | void (*count_cells)(const void *blob, int parentoffset, |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1003 | int *addrc, int *sizec); |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 1004 | u64 (*map)(fdt32_t *addr, const fdt32_t *range, |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1005 | int na, int ns, int pna); |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 1006 | int (*translate)(fdt32_t *addr, u64 offset, int na); |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1007 | }; |
| 1008 | |
| 1009 | /* Default translator (generic bus) */ |
Stephen Warren | c99581b | 2016-08-05 09:47:50 -0600 | [diff] [blame] | 1010 | void of_bus_default_count_cells(const void *blob, int parentoffset, |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1011 | int *addrc, int *sizec) |
| 1012 | { |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 1013 | const fdt32_t *prop; |
Scott Wood | 9989971 | 2010-08-12 18:37:39 -0500 | [diff] [blame] | 1014 | |
Simon Glass | 9fbc632 | 2014-10-23 18:58:57 -0600 | [diff] [blame] | 1015 | if (addrc) |
| 1016 | *addrc = fdt_address_cells(blob, parentoffset); |
Scott Wood | 9989971 | 2010-08-12 18:37:39 -0500 | [diff] [blame] | 1017 | |
| 1018 | if (sizec) { |
| 1019 | prop = fdt_getprop(blob, parentoffset, "#size-cells", NULL); |
| 1020 | if (prop) |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 1021 | *sizec = be32_to_cpup(prop); |
Scott Wood | 9989971 | 2010-08-12 18:37:39 -0500 | [diff] [blame] | 1022 | else |
| 1023 | *sizec = 1; |
| 1024 | } |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1025 | } |
| 1026 | |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 1027 | static u64 of_bus_default_map(fdt32_t *addr, const fdt32_t *range, |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1028 | int na, int ns, int pna) |
| 1029 | { |
| 1030 | u64 cp, s, da; |
| 1031 | |
| 1032 | cp = of_read_number(range, na); |
| 1033 | s = of_read_number(range + na + pna, ns); |
| 1034 | da = of_read_number(addr, na); |
| 1035 | |
Simon Glass | e9f343f | 2014-11-11 12:47:07 -0700 | [diff] [blame] | 1036 | debug("OF: default map, cp=%" PRIu64 ", s=%" PRIu64 |
| 1037 | ", da=%" PRIu64 "\n", cp, s, da); |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1038 | |
| 1039 | if (da < cp || da >= (cp + s)) |
| 1040 | return OF_BAD_ADDR; |
| 1041 | return da - cp; |
| 1042 | } |
| 1043 | |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 1044 | static int of_bus_default_translate(fdt32_t *addr, u64 offset, int na) |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1045 | { |
| 1046 | u64 a = of_read_number(addr, na); |
| 1047 | memset(addr, 0, na * 4); |
| 1048 | a += offset; |
| 1049 | if (na > 1) |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 1050 | addr[na - 2] = cpu_to_fdt32(a >> 32); |
| 1051 | addr[na - 1] = cpu_to_fdt32(a & 0xffffffffu); |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1052 | |
| 1053 | return 0; |
| 1054 | } |
| 1055 | |
Paul Burton | dbef2f0 | 2016-05-17 07:43:24 +0100 | [diff] [blame] | 1056 | #ifdef CONFIG_OF_ISA_BUS |
| 1057 | |
| 1058 | /* ISA bus translator */ |
Stephen Warren | c99581b | 2016-08-05 09:47:50 -0600 | [diff] [blame] | 1059 | static int of_bus_isa_match(const void *blob, int parentoffset) |
Paul Burton | dbef2f0 | 2016-05-17 07:43:24 +0100 | [diff] [blame] | 1060 | { |
| 1061 | const char *name; |
| 1062 | |
| 1063 | name = fdt_get_name(blob, parentoffset, NULL); |
| 1064 | if (!name) |
| 1065 | return 0; |
| 1066 | |
| 1067 | return !strcmp(name, "isa"); |
| 1068 | } |
| 1069 | |
Stephen Warren | c99581b | 2016-08-05 09:47:50 -0600 | [diff] [blame] | 1070 | static void of_bus_isa_count_cells(const void *blob, int parentoffset, |
Paul Burton | dbef2f0 | 2016-05-17 07:43:24 +0100 | [diff] [blame] | 1071 | int *addrc, int *sizec) |
| 1072 | { |
| 1073 | if (addrc) |
| 1074 | *addrc = 2; |
| 1075 | if (sizec) |
| 1076 | *sizec = 1; |
| 1077 | } |
| 1078 | |
| 1079 | static u64 of_bus_isa_map(fdt32_t *addr, const fdt32_t *range, |
| 1080 | int na, int ns, int pna) |
| 1081 | { |
| 1082 | u64 cp, s, da; |
| 1083 | |
| 1084 | /* Check address type match */ |
| 1085 | if ((addr[0] ^ range[0]) & cpu_to_be32(1)) |
| 1086 | return OF_BAD_ADDR; |
| 1087 | |
| 1088 | cp = of_read_number(range + 1, na - 1); |
| 1089 | s = of_read_number(range + na + pna, ns); |
| 1090 | da = of_read_number(addr + 1, na - 1); |
| 1091 | |
| 1092 | debug("OF: ISA map, cp=%" PRIu64 ", s=%" PRIu64 |
| 1093 | ", da=%" PRIu64 "\n", cp, s, da); |
| 1094 | |
| 1095 | if (da < cp || da >= (cp + s)) |
| 1096 | return OF_BAD_ADDR; |
| 1097 | return da - cp; |
| 1098 | } |
| 1099 | |
| 1100 | static int of_bus_isa_translate(fdt32_t *addr, u64 offset, int na) |
| 1101 | { |
| 1102 | return of_bus_default_translate(addr + 1, offset, na - 1); |
| 1103 | } |
| 1104 | |
| 1105 | #endif /* CONFIG_OF_ISA_BUS */ |
| 1106 | |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1107 | /* Array of bus specific translators */ |
| 1108 | static struct of_bus of_busses[] = { |
Paul Burton | dbef2f0 | 2016-05-17 07:43:24 +0100 | [diff] [blame] | 1109 | #ifdef CONFIG_OF_ISA_BUS |
| 1110 | /* ISA */ |
| 1111 | { |
| 1112 | .name = "isa", |
| 1113 | .addresses = "reg", |
| 1114 | .match = of_bus_isa_match, |
| 1115 | .count_cells = of_bus_isa_count_cells, |
| 1116 | .map = of_bus_isa_map, |
| 1117 | .translate = of_bus_isa_translate, |
| 1118 | }, |
| 1119 | #endif /* CONFIG_OF_ISA_BUS */ |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1120 | /* Default */ |
| 1121 | { |
| 1122 | .name = "default", |
| 1123 | .addresses = "reg", |
| 1124 | .count_cells = of_bus_default_count_cells, |
| 1125 | .map = of_bus_default_map, |
| 1126 | .translate = of_bus_default_translate, |
| 1127 | }, |
| 1128 | }; |
| 1129 | |
Stephen Warren | c99581b | 2016-08-05 09:47:50 -0600 | [diff] [blame] | 1130 | static struct of_bus *of_match_bus(const void *blob, int parentoffset) |
Paul Burton | dbef2f0 | 2016-05-17 07:43:24 +0100 | [diff] [blame] | 1131 | { |
| 1132 | struct of_bus *bus; |
| 1133 | |
| 1134 | if (ARRAY_SIZE(of_busses) == 1) |
| 1135 | return of_busses; |
| 1136 | |
| 1137 | for (bus = of_busses; bus; bus++) { |
| 1138 | if (!bus->match || bus->match(blob, parentoffset)) |
| 1139 | return bus; |
| 1140 | } |
| 1141 | |
| 1142 | /* |
| 1143 | * We should always have matched the default bus at least, since |
| 1144 | * it has a NULL match field. If we didn't then it somehow isn't |
| 1145 | * in the of_busses array or something equally catastrophic has |
| 1146 | * gone wrong. |
| 1147 | */ |
| 1148 | assert(0); |
| 1149 | return NULL; |
| 1150 | } |
| 1151 | |
Stephen Warren | c99581b | 2016-08-05 09:47:50 -0600 | [diff] [blame] | 1152 | static int of_translate_one(const void *blob, int parent, struct of_bus *bus, |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 1153 | struct of_bus *pbus, fdt32_t *addr, |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1154 | int na, int ns, int pna, const char *rprop) |
| 1155 | { |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 1156 | const fdt32_t *ranges; |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1157 | int rlen; |
| 1158 | int rone; |
| 1159 | u64 offset = OF_BAD_ADDR; |
| 1160 | |
| 1161 | /* Normally, an absence of a "ranges" property means we are |
| 1162 | * crossing a non-translatable boundary, and thus the addresses |
| 1163 | * below the current not cannot be converted to CPU physical ones. |
| 1164 | * Unfortunately, while this is very clear in the spec, it's not |
| 1165 | * what Apple understood, and they do have things like /uni-n or |
| 1166 | * /ht nodes with no "ranges" property and a lot of perfectly |
| 1167 | * useable mapped devices below them. Thus we treat the absence of |
| 1168 | * "ranges" as equivalent to an empty "ranges" property which means |
| 1169 | * a 1:1 translation at that level. It's up to the caller not to try |
| 1170 | * to translate addresses that aren't supposed to be translated in |
| 1171 | * the first place. --BenH. |
| 1172 | */ |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 1173 | ranges = fdt_getprop(blob, parent, rprop, &rlen); |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1174 | if (ranges == NULL || rlen == 0) { |
| 1175 | offset = of_read_number(addr, na); |
| 1176 | memset(addr, 0, pna * 4); |
| 1177 | debug("OF: no ranges, 1:1 translation\n"); |
| 1178 | goto finish; |
| 1179 | } |
| 1180 | |
| 1181 | debug("OF: walking ranges...\n"); |
| 1182 | |
| 1183 | /* Now walk through the ranges */ |
| 1184 | rlen /= 4; |
| 1185 | rone = na + pna + ns; |
| 1186 | for (; rlen >= rone; rlen -= rone, ranges += rone) { |
| 1187 | offset = bus->map(addr, ranges, na, ns, pna); |
| 1188 | if (offset != OF_BAD_ADDR) |
| 1189 | break; |
| 1190 | } |
| 1191 | if (offset == OF_BAD_ADDR) { |
| 1192 | debug("OF: not found !\n"); |
| 1193 | return 1; |
| 1194 | } |
| 1195 | memcpy(addr, ranges + na, 4 * pna); |
| 1196 | |
| 1197 | finish: |
| 1198 | of_dump_addr("OF: parent translation for:", addr, pna); |
Simon Glass | e9f343f | 2014-11-11 12:47:07 -0700 | [diff] [blame] | 1199 | debug("OF: with offset: %" PRIu64 "\n", offset); |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1200 | |
| 1201 | /* Translate it into parent bus space */ |
| 1202 | return pbus->translate(addr, offset, pna); |
| 1203 | } |
| 1204 | |
| 1205 | /* |
| 1206 | * Translate an address from the device-tree into a CPU physical address, |
| 1207 | * this walks up the tree and applies the various bus mappings on the |
| 1208 | * way. |
| 1209 | * |
| 1210 | * Note: We consider that crossing any level with #size-cells == 0 to mean |
| 1211 | * that translation is impossible (that is we are not dealing with a value |
| 1212 | * that can be mapped to a cpu physical address). This is not really specified |
| 1213 | * that way, but this is traditionally the way IBM at least do things |
| 1214 | */ |
Stephen Warren | c99581b | 2016-08-05 09:47:50 -0600 | [diff] [blame] | 1215 | static u64 __of_translate_address(const void *blob, int node_offset, |
| 1216 | const fdt32_t *in_addr, const char *rprop) |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1217 | { |
| 1218 | int parent; |
| 1219 | struct of_bus *bus, *pbus; |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 1220 | fdt32_t addr[OF_MAX_ADDR_CELLS]; |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1221 | int na, ns, pna, pns; |
| 1222 | u64 result = OF_BAD_ADDR; |
| 1223 | |
| 1224 | debug("OF: ** translation for device %s **\n", |
| 1225 | fdt_get_name(blob, node_offset, NULL)); |
| 1226 | |
| 1227 | /* Get parent & match bus type */ |
| 1228 | parent = fdt_parent_offset(blob, node_offset); |
| 1229 | if (parent < 0) |
| 1230 | goto bail; |
Paul Burton | dbef2f0 | 2016-05-17 07:43:24 +0100 | [diff] [blame] | 1231 | bus = of_match_bus(blob, parent); |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1232 | |
| 1233 | /* Cound address cells & copy address locally */ |
Scott Wood | 9989971 | 2010-08-12 18:37:39 -0500 | [diff] [blame] | 1234 | bus->count_cells(blob, parent, &na, &ns); |
Przemyslaw Marczak | f4d337c | 2016-01-12 15:40:44 +0100 | [diff] [blame] | 1235 | if (!OF_CHECK_COUNTS(na, ns)) { |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1236 | printf("%s: Bad cell count for %s\n", __FUNCTION__, |
| 1237 | fdt_get_name(blob, node_offset, NULL)); |
| 1238 | goto bail; |
| 1239 | } |
| 1240 | memcpy(addr, in_addr, na * 4); |
| 1241 | |
| 1242 | debug("OF: bus is %s (na=%d, ns=%d) on %s\n", |
| 1243 | bus->name, na, ns, fdt_get_name(blob, parent, NULL)); |
| 1244 | of_dump_addr("OF: translating address:", addr, na); |
| 1245 | |
| 1246 | /* Translate */ |
| 1247 | for (;;) { |
| 1248 | /* Switch to parent bus */ |
| 1249 | node_offset = parent; |
| 1250 | parent = fdt_parent_offset(blob, node_offset); |
| 1251 | |
| 1252 | /* If root, we have finished */ |
| 1253 | if (parent < 0) { |
| 1254 | debug("OF: reached root node\n"); |
| 1255 | result = of_read_number(addr, na); |
| 1256 | break; |
| 1257 | } |
| 1258 | |
| 1259 | /* Get new parent bus and counts */ |
Paul Burton | dbef2f0 | 2016-05-17 07:43:24 +0100 | [diff] [blame] | 1260 | pbus = of_match_bus(blob, parent); |
Scott Wood | 9989971 | 2010-08-12 18:37:39 -0500 | [diff] [blame] | 1261 | pbus->count_cells(blob, parent, &pna, &pns); |
Przemyslaw Marczak | f4d337c | 2016-01-12 15:40:44 +0100 | [diff] [blame] | 1262 | if (!OF_CHECK_COUNTS(pna, pns)) { |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1263 | printf("%s: Bad cell count for %s\n", __FUNCTION__, |
| 1264 | fdt_get_name(blob, node_offset, NULL)); |
| 1265 | break; |
| 1266 | } |
| 1267 | |
| 1268 | debug("OF: parent bus is %s (na=%d, ns=%d) on %s\n", |
| 1269 | pbus->name, pna, pns, fdt_get_name(blob, parent, NULL)); |
| 1270 | |
| 1271 | /* Apply bus translation */ |
| 1272 | if (of_translate_one(blob, node_offset, bus, pbus, |
| 1273 | addr, na, ns, pna, rprop)) |
| 1274 | break; |
| 1275 | |
| 1276 | /* Complete the move up one level */ |
| 1277 | na = pna; |
| 1278 | ns = pns; |
| 1279 | bus = pbus; |
| 1280 | |
| 1281 | of_dump_addr("OF: one level translation:", addr, na); |
| 1282 | } |
| 1283 | bail: |
| 1284 | |
| 1285 | return result; |
| 1286 | } |
| 1287 | |
Stephen Warren | c99581b | 2016-08-05 09:47:50 -0600 | [diff] [blame] | 1288 | u64 fdt_translate_address(const void *blob, int node_offset, |
| 1289 | const fdt32_t *in_addr) |
Kumar Gala | b87e793 | 2010-06-16 14:27:38 -0500 | [diff] [blame] | 1290 | { |
| 1291 | return __of_translate_address(blob, node_offset, in_addr, "ranges"); |
| 1292 | } |
Kumar Gala | 800d1d1 | 2010-07-04 12:48:21 -0500 | [diff] [blame] | 1293 | |
| 1294 | /** |
| 1295 | * fdt_node_offset_by_compat_reg: Find a node that matches compatiable and |
| 1296 | * who's reg property matches a physical cpu address |
| 1297 | * |
| 1298 | * @blob: ptr to device tree |
| 1299 | * @compat: compatiable string to match |
| 1300 | * @compat_off: property name |
| 1301 | * |
| 1302 | */ |
| 1303 | int fdt_node_offset_by_compat_reg(void *blob, const char *compat, |
| 1304 | phys_addr_t compat_off) |
| 1305 | { |
| 1306 | int len, off = fdt_node_offset_by_compatible(blob, -1, compat); |
| 1307 | while (off != -FDT_ERR_NOTFOUND) { |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 1308 | const fdt32_t *reg = fdt_getprop(blob, off, "reg", &len); |
Kumar Gala | 800d1d1 | 2010-07-04 12:48:21 -0500 | [diff] [blame] | 1309 | if (reg) { |
| 1310 | if (compat_off == fdt_translate_address(blob, off, reg)) |
| 1311 | return off; |
| 1312 | } |
| 1313 | off = fdt_node_offset_by_compatible(blob, off, compat); |
| 1314 | } |
| 1315 | |
| 1316 | return -FDT_ERR_NOTFOUND; |
| 1317 | } |
| 1318 | |
Kumar Gala | b7afb11 | 2010-07-09 16:18:58 -0500 | [diff] [blame] | 1319 | /** |
| 1320 | * fdt_alloc_phandle: Return next free phandle value |
| 1321 | * |
| 1322 | * @blob: ptr to device tree |
| 1323 | */ |
| 1324 | int fdt_alloc_phandle(void *blob) |
| 1325 | { |
Masahiro Yamada | db20464 | 2014-11-07 03:03:31 +0900 | [diff] [blame] | 1326 | int offset; |
| 1327 | uint32_t phandle = 0; |
Kumar Gala | b7afb11 | 2010-07-09 16:18:58 -0500 | [diff] [blame] | 1328 | |
| 1329 | for (offset = fdt_next_node(blob, -1, NULL); offset >= 0; |
| 1330 | offset = fdt_next_node(blob, offset, NULL)) { |
Timur Tabi | c6d8303 | 2011-09-20 18:24:35 -0500 | [diff] [blame] | 1331 | phandle = max(phandle, fdt_get_phandle(blob, offset)); |
Kumar Gala | b7afb11 | 2010-07-09 16:18:58 -0500 | [diff] [blame] | 1332 | } |
Kumar Gala | 800d1d1 | 2010-07-04 12:48:21 -0500 | [diff] [blame] | 1333 | |
Kumar Gala | b7afb11 | 2010-07-09 16:18:58 -0500 | [diff] [blame] | 1334 | return phandle + 1; |
| 1335 | } |
Anatolij Gustschin | 3b857f1 | 2010-08-18 11:25:20 +0200 | [diff] [blame] | 1336 | |
Gerald Van Baren | af73788 | 2011-07-14 21:40:10 -0400 | [diff] [blame] | 1337 | /* |
Kumar Gala | f2f1c5a | 2011-08-01 00:23:23 -0500 | [diff] [blame] | 1338 | * fdt_set_phandle: Create a phandle property for the given node |
Gerald Van Baren | af73788 | 2011-07-14 21:40:10 -0400 | [diff] [blame] | 1339 | * |
| 1340 | * @fdt: ptr to device tree |
| 1341 | * @nodeoffset: node to update |
| 1342 | * @phandle: phandle value to set (must be unique) |
Kumar Gala | f2f1c5a | 2011-08-01 00:23:23 -0500 | [diff] [blame] | 1343 | */ |
| 1344 | int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle) |
Gerald Van Baren | af73788 | 2011-07-14 21:40:10 -0400 | [diff] [blame] | 1345 | { |
| 1346 | int ret; |
| 1347 | |
| 1348 | #ifdef DEBUG |
| 1349 | int off = fdt_node_offset_by_phandle(fdt, phandle); |
| 1350 | |
| 1351 | if ((off >= 0) && (off != nodeoffset)) { |
| 1352 | char buf[64]; |
| 1353 | |
| 1354 | fdt_get_path(fdt, nodeoffset, buf, sizeof(buf)); |
| 1355 | printf("Trying to update node %s with phandle %u ", |
| 1356 | buf, phandle); |
| 1357 | |
| 1358 | fdt_get_path(fdt, off, buf, sizeof(buf)); |
| 1359 | printf("that already exists in node %s.\n", buf); |
| 1360 | return -FDT_ERR_BADPHANDLE; |
| 1361 | } |
| 1362 | #endif |
| 1363 | |
| 1364 | ret = fdt_setprop_cell(fdt, nodeoffset, "phandle", phandle); |
| 1365 | if (ret < 0) |
| 1366 | return ret; |
| 1367 | |
| 1368 | /* |
| 1369 | * For now, also set the deprecated "linux,phandle" property, so that we |
| 1370 | * don't break older kernels. |
| 1371 | */ |
| 1372 | ret = fdt_setprop_cell(fdt, nodeoffset, "linux,phandle", phandle); |
| 1373 | |
| 1374 | return ret; |
| 1375 | } |
| 1376 | |
Kumar Gala | d5fc258 | 2011-08-01 00:25:20 -0500 | [diff] [blame] | 1377 | /* |
| 1378 | * fdt_create_phandle: Create a phandle property for the given node |
| 1379 | * |
| 1380 | * @fdt: ptr to device tree |
| 1381 | * @nodeoffset: node to update |
| 1382 | */ |
Timur Tabi | 0f46c80 | 2011-09-20 18:24:34 -0500 | [diff] [blame] | 1383 | unsigned int fdt_create_phandle(void *fdt, int nodeoffset) |
Kumar Gala | d5fc258 | 2011-08-01 00:25:20 -0500 | [diff] [blame] | 1384 | { |
| 1385 | /* see if there is a phandle already */ |
| 1386 | int phandle = fdt_get_phandle(fdt, nodeoffset); |
| 1387 | |
| 1388 | /* if we got 0, means no phandle so create one */ |
| 1389 | if (phandle == 0) { |
Timur Tabi | 0f46c80 | 2011-09-20 18:24:34 -0500 | [diff] [blame] | 1390 | int ret; |
| 1391 | |
Kumar Gala | d5fc258 | 2011-08-01 00:25:20 -0500 | [diff] [blame] | 1392 | phandle = fdt_alloc_phandle(fdt); |
Timur Tabi | 0f46c80 | 2011-09-20 18:24:34 -0500 | [diff] [blame] | 1393 | ret = fdt_set_phandle(fdt, nodeoffset, phandle); |
| 1394 | if (ret < 0) { |
| 1395 | printf("Can't set phandle %u: %s\n", phandle, |
| 1396 | fdt_strerror(ret)); |
| 1397 | return 0; |
| 1398 | } |
Kumar Gala | d5fc258 | 2011-08-01 00:25:20 -0500 | [diff] [blame] | 1399 | } |
| 1400 | |
| 1401 | return phandle; |
| 1402 | } |
| 1403 | |
Shengzhou Liu | a7be802 | 2011-10-14 16:26:05 +0800 | [diff] [blame] | 1404 | /* |
| 1405 | * fdt_set_node_status: Set status for the given node |
| 1406 | * |
| 1407 | * @fdt: ptr to device tree |
| 1408 | * @nodeoffset: node to update |
| 1409 | * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, |
| 1410 | * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE |
| 1411 | * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE |
| 1412 | */ |
| 1413 | int fdt_set_node_status(void *fdt, int nodeoffset, |
| 1414 | enum fdt_status status, unsigned int error_code) |
| 1415 | { |
| 1416 | char buf[16]; |
| 1417 | int ret = 0; |
| 1418 | |
| 1419 | if (nodeoffset < 0) |
| 1420 | return nodeoffset; |
| 1421 | |
| 1422 | switch (status) { |
| 1423 | case FDT_STATUS_OKAY: |
| 1424 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "okay"); |
| 1425 | break; |
| 1426 | case FDT_STATUS_DISABLED: |
| 1427 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "disabled"); |
| 1428 | break; |
| 1429 | case FDT_STATUS_FAIL: |
| 1430 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "fail"); |
| 1431 | break; |
| 1432 | case FDT_STATUS_FAIL_ERROR_CODE: |
| 1433 | sprintf(buf, "fail-%d", error_code); |
| 1434 | ret = fdt_setprop_string(fdt, nodeoffset, "status", buf); |
| 1435 | break; |
| 1436 | default: |
| 1437 | printf("Invalid fdt status: %x\n", status); |
| 1438 | ret = -1; |
| 1439 | break; |
| 1440 | } |
| 1441 | |
| 1442 | return ret; |
| 1443 | } |
| 1444 | |
| 1445 | /* |
| 1446 | * fdt_set_status_by_alias: Set status for the given node given an alias |
| 1447 | * |
| 1448 | * @fdt: ptr to device tree |
| 1449 | * @alias: alias of node to update |
| 1450 | * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, |
| 1451 | * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE |
| 1452 | * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE |
| 1453 | */ |
| 1454 | int fdt_set_status_by_alias(void *fdt, const char* alias, |
| 1455 | enum fdt_status status, unsigned int error_code) |
| 1456 | { |
| 1457 | int offset = fdt_path_offset(fdt, alias); |
| 1458 | |
| 1459 | return fdt_set_node_status(fdt, offset, status, error_code); |
| 1460 | } |
| 1461 | |
Tom Wai-Hong Tam | db4a88d | 2012-12-05 14:46:41 +0000 | [diff] [blame] | 1462 | #if defined(CONFIG_VIDEO) || defined(CONFIG_LCD) |
Anatolij Gustschin | 3b857f1 | 2010-08-18 11:25:20 +0200 | [diff] [blame] | 1463 | int fdt_add_edid(void *blob, const char *compat, unsigned char *edid_buf) |
| 1464 | { |
| 1465 | int noff; |
| 1466 | int ret; |
| 1467 | |
| 1468 | noff = fdt_node_offset_by_compatible(blob, -1, compat); |
| 1469 | if (noff != -FDT_ERR_NOTFOUND) { |
| 1470 | debug("%s: %s\n", fdt_get_name(blob, noff, 0), compat); |
| 1471 | add_edid: |
| 1472 | ret = fdt_setprop(blob, noff, "edid", edid_buf, 128); |
| 1473 | if (ret == -FDT_ERR_NOSPACE) { |
| 1474 | ret = fdt_increase_size(blob, 512); |
| 1475 | if (!ret) |
| 1476 | goto add_edid; |
| 1477 | else |
| 1478 | goto err_size; |
| 1479 | } else if (ret < 0) { |
| 1480 | printf("Can't add property: %s\n", fdt_strerror(ret)); |
| 1481 | return ret; |
| 1482 | } |
| 1483 | } |
| 1484 | return 0; |
| 1485 | err_size: |
| 1486 | printf("Can't increase blob size: %s\n", fdt_strerror(ret)); |
| 1487 | return ret; |
| 1488 | } |
| 1489 | #endif |
Timur Tabi | 8ebaf20 | 2011-05-03 13:24:07 -0500 | [diff] [blame] | 1490 | |
| 1491 | /* |
| 1492 | * Verify the physical address of device tree node for a given alias |
| 1493 | * |
| 1494 | * This function locates the device tree node of a given alias, and then |
| 1495 | * verifies that the physical address of that device matches the given |
| 1496 | * parameter. It displays a message if there is a mismatch. |
| 1497 | * |
| 1498 | * Returns 1 on success, 0 on failure |
| 1499 | */ |
| 1500 | int fdt_verify_alias_address(void *fdt, int anode, const char *alias, u64 addr) |
| 1501 | { |
| 1502 | const char *path; |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 1503 | const fdt32_t *reg; |
Timur Tabi | 8ebaf20 | 2011-05-03 13:24:07 -0500 | [diff] [blame] | 1504 | int node, len; |
| 1505 | u64 dt_addr; |
| 1506 | |
| 1507 | path = fdt_getprop(fdt, anode, alias, NULL); |
| 1508 | if (!path) { |
| 1509 | /* If there's no such alias, then it's not a failure */ |
| 1510 | return 1; |
| 1511 | } |
| 1512 | |
| 1513 | node = fdt_path_offset(fdt, path); |
| 1514 | if (node < 0) { |
| 1515 | printf("Warning: device tree alias '%s' points to invalid " |
| 1516 | "node %s.\n", alias, path); |
| 1517 | return 0; |
| 1518 | } |
| 1519 | |
| 1520 | reg = fdt_getprop(fdt, node, "reg", &len); |
| 1521 | if (!reg) { |
| 1522 | printf("Warning: device tree node '%s' has no address.\n", |
| 1523 | path); |
| 1524 | return 0; |
| 1525 | } |
| 1526 | |
| 1527 | dt_addr = fdt_translate_address(fdt, node, reg); |
| 1528 | if (addr != dt_addr) { |
Simon Glass | e9f343f | 2014-11-11 12:47:07 -0700 | [diff] [blame] | 1529 | printf("Warning: U-Boot configured device %s at address %" |
| 1530 | PRIx64 ",\n but the device tree has it address %" |
| 1531 | PRIx64 ".\n", alias, addr, dt_addr); |
Timur Tabi | 8ebaf20 | 2011-05-03 13:24:07 -0500 | [diff] [blame] | 1532 | return 0; |
| 1533 | } |
| 1534 | |
| 1535 | return 1; |
| 1536 | } |
| 1537 | |
| 1538 | /* |
| 1539 | * Returns the base address of an SOC or PCI node |
| 1540 | */ |
| 1541 | u64 fdt_get_base_address(void *fdt, int node) |
| 1542 | { |
| 1543 | int size; |
| 1544 | u32 naddr; |
Kim Phillips | 6542c07 | 2013-01-16 14:00:11 +0000 | [diff] [blame] | 1545 | const fdt32_t *prop; |
Timur Tabi | 8ebaf20 | 2011-05-03 13:24:07 -0500 | [diff] [blame] | 1546 | |
Simon Glass | 9fbc632 | 2014-10-23 18:58:57 -0600 | [diff] [blame] | 1547 | naddr = fdt_address_cells(fdt, node); |
Timur Tabi | 8ebaf20 | 2011-05-03 13:24:07 -0500 | [diff] [blame] | 1548 | |
| 1549 | prop = fdt_getprop(fdt, node, "ranges", &size); |
| 1550 | |
| 1551 | return prop ? fdt_translate_address(fdt, node, prop + naddr) : 0; |
| 1552 | } |
Alexander Graf | 19555be | 2014-04-11 17:09:41 +0200 | [diff] [blame] | 1553 | |
| 1554 | /* |
| 1555 | * Read a property of size <prop_len>. Currently only supports 1 or 2 cells. |
| 1556 | */ |
| 1557 | static int fdt_read_prop(const fdt32_t *prop, int prop_len, int cell_off, |
| 1558 | uint64_t *val, int cells) |
| 1559 | { |
| 1560 | const fdt32_t *prop32 = &prop[cell_off]; |
| 1561 | const fdt64_t *prop64 = (const fdt64_t *)&prop[cell_off]; |
| 1562 | |
| 1563 | if ((cell_off + cells) > prop_len) |
| 1564 | return -FDT_ERR_NOSPACE; |
| 1565 | |
| 1566 | switch (cells) { |
| 1567 | case 1: |
| 1568 | *val = fdt32_to_cpu(*prop32); |
| 1569 | break; |
| 1570 | case 2: |
| 1571 | *val = fdt64_to_cpu(*prop64); |
| 1572 | break; |
| 1573 | default: |
| 1574 | return -FDT_ERR_NOSPACE; |
| 1575 | } |
| 1576 | |
| 1577 | return 0; |
| 1578 | } |
| 1579 | |
| 1580 | /** |
| 1581 | * fdt_read_range - Read a node's n'th range property |
| 1582 | * |
| 1583 | * @fdt: ptr to device tree |
| 1584 | * @node: offset of node |
| 1585 | * @n: range index |
| 1586 | * @child_addr: pointer to storage for the "child address" field |
| 1587 | * @addr: pointer to storage for the CPU view translated physical start |
| 1588 | * @len: pointer to storage for the range length |
| 1589 | * |
| 1590 | * Convenience function that reads and interprets a specific range out of |
| 1591 | * a number of the "ranges" property array. |
| 1592 | */ |
| 1593 | int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr, |
| 1594 | uint64_t *addr, uint64_t *len) |
| 1595 | { |
| 1596 | int pnode = fdt_parent_offset(fdt, node); |
| 1597 | const fdt32_t *ranges; |
| 1598 | int pacells; |
| 1599 | int acells; |
| 1600 | int scells; |
| 1601 | int ranges_len; |
| 1602 | int cell = 0; |
| 1603 | int r = 0; |
| 1604 | |
| 1605 | /* |
| 1606 | * The "ranges" property is an array of |
| 1607 | * { <child address> <parent address> <size in child address space> } |
| 1608 | * |
| 1609 | * All 3 elements can span a diffent number of cells. Fetch their size. |
| 1610 | */ |
| 1611 | pacells = fdt_getprop_u32_default_node(fdt, pnode, 0, "#address-cells", 1); |
| 1612 | acells = fdt_getprop_u32_default_node(fdt, node, 0, "#address-cells", 1); |
| 1613 | scells = fdt_getprop_u32_default_node(fdt, node, 0, "#size-cells", 1); |
| 1614 | |
| 1615 | /* Now try to get the ranges property */ |
| 1616 | ranges = fdt_getprop(fdt, node, "ranges", &ranges_len); |
| 1617 | if (!ranges) |
| 1618 | return -FDT_ERR_NOTFOUND; |
| 1619 | ranges_len /= sizeof(uint32_t); |
| 1620 | |
| 1621 | /* Jump to the n'th entry */ |
| 1622 | cell = n * (pacells + acells + scells); |
| 1623 | |
| 1624 | /* Read <child address> */ |
| 1625 | if (child_addr) { |
| 1626 | r = fdt_read_prop(ranges, ranges_len, cell, child_addr, |
| 1627 | acells); |
| 1628 | if (r) |
| 1629 | return r; |
| 1630 | } |
| 1631 | cell += acells; |
| 1632 | |
| 1633 | /* Read <parent address> */ |
| 1634 | if (addr) |
| 1635 | *addr = fdt_translate_address(fdt, node, ranges + cell); |
| 1636 | cell += pacells; |
| 1637 | |
| 1638 | /* Read <size in child address space> */ |
| 1639 | if (len) { |
| 1640 | r = fdt_read_prop(ranges, ranges_len, cell, len, scells); |
| 1641 | if (r) |
| 1642 | return r; |
| 1643 | } |
| 1644 | |
| 1645 | return 0; |
| 1646 | } |
Hans de Goede | ea87637 | 2014-11-17 15:29:11 +0100 | [diff] [blame] | 1647 | |
| 1648 | /** |
| 1649 | * fdt_setup_simplefb_node - Fill and enable a simplefb node |
| 1650 | * |
| 1651 | * @fdt: ptr to device tree |
| 1652 | * @node: offset of the simplefb node |
| 1653 | * @base_address: framebuffer base address |
| 1654 | * @width: width in pixels |
| 1655 | * @height: height in pixels |
| 1656 | * @stride: bytes per line |
| 1657 | * @format: pixel format string |
| 1658 | * |
| 1659 | * Convenience function to fill and enable a simplefb node. |
| 1660 | */ |
| 1661 | int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width, |
| 1662 | u32 height, u32 stride, const char *format) |
| 1663 | { |
| 1664 | char name[32]; |
| 1665 | fdt32_t cells[4]; |
| 1666 | int i, addrc, sizec, ret; |
| 1667 | |
| 1668 | of_bus_default_count_cells(fdt, fdt_parent_offset(fdt, node), |
| 1669 | &addrc, &sizec); |
| 1670 | i = 0; |
| 1671 | if (addrc == 2) |
| 1672 | cells[i++] = cpu_to_fdt32(base_address >> 32); |
| 1673 | cells[i++] = cpu_to_fdt32(base_address); |
| 1674 | if (sizec == 2) |
| 1675 | cells[i++] = 0; |
| 1676 | cells[i++] = cpu_to_fdt32(height * stride); |
| 1677 | |
| 1678 | ret = fdt_setprop(fdt, node, "reg", cells, sizeof(cells[0]) * i); |
| 1679 | if (ret < 0) |
| 1680 | return ret; |
| 1681 | |
Simon Glass | 248b18d | 2015-04-20 12:37:16 -0600 | [diff] [blame] | 1682 | snprintf(name, sizeof(name), "framebuffer@%" PRIx64, base_address); |
Hans de Goede | ea87637 | 2014-11-17 15:29:11 +0100 | [diff] [blame] | 1683 | ret = fdt_set_name(fdt, node, name); |
| 1684 | if (ret < 0) |
| 1685 | return ret; |
| 1686 | |
| 1687 | ret = fdt_setprop_u32(fdt, node, "width", width); |
| 1688 | if (ret < 0) |
| 1689 | return ret; |
| 1690 | |
| 1691 | ret = fdt_setprop_u32(fdt, node, "height", height); |
| 1692 | if (ret < 0) |
| 1693 | return ret; |
| 1694 | |
| 1695 | ret = fdt_setprop_u32(fdt, node, "stride", stride); |
| 1696 | if (ret < 0) |
| 1697 | return ret; |
| 1698 | |
| 1699 | ret = fdt_setprop_string(fdt, node, "format", format); |
| 1700 | if (ret < 0) |
| 1701 | return ret; |
| 1702 | |
| 1703 | ret = fdt_setprop_string(fdt, node, "status", "okay"); |
| 1704 | if (ret < 0) |
| 1705 | return ret; |
| 1706 | |
| 1707 | return 0; |
| 1708 | } |
Tim Harvey | 5d7c6b5 | 2015-04-08 11:45:39 -0700 | [diff] [blame] | 1709 | |
| 1710 | /* |
| 1711 | * Update native-mode in display-timings from display environment variable. |
| 1712 | * The node to update are specified by path. |
| 1713 | */ |
| 1714 | int fdt_fixup_display(void *blob, const char *path, const char *display) |
| 1715 | { |
| 1716 | int off, toff; |
| 1717 | |
| 1718 | if (!display || !path) |
| 1719 | return -FDT_ERR_NOTFOUND; |
| 1720 | |
| 1721 | toff = fdt_path_offset(blob, path); |
| 1722 | if (toff >= 0) |
| 1723 | toff = fdt_subnode_offset(blob, toff, "display-timings"); |
| 1724 | if (toff < 0) |
| 1725 | return toff; |
| 1726 | |
| 1727 | for (off = fdt_first_subnode(blob, toff); |
| 1728 | off >= 0; |
| 1729 | off = fdt_next_subnode(blob, off)) { |
| 1730 | uint32_t h = fdt_get_phandle(blob, off); |
| 1731 | debug("%s:0x%x\n", fdt_get_name(blob, off, NULL), |
| 1732 | fdt32_to_cpu(h)); |
| 1733 | if (strcasecmp(fdt_get_name(blob, off, NULL), display) == 0) |
| 1734 | return fdt_setprop_u32(blob, toff, "native-mode", h); |
| 1735 | } |
| 1736 | return toff; |
| 1737 | } |