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Gerald Van Baren64dbbd42007-04-06 14:19:43 -04001/*
2 * (C) Copyright 2007
3 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
4 *
Shengzhou Liu2a523f52011-10-14 16:26:05 +08005 * Copyright 2010-2011 Freescale Semiconductor, Inc.
Kumar Galaa0342c02010-06-16 14:27:38 -05006 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02007 * SPDX-License-Identifier: GPL-2.0+
Gerald Van Baren64dbbd42007-04-06 14:19:43 -04008 */
9
10#include <common.h>
Simon Glasse48f3742014-11-11 12:47:07 -070011#include <inttypes.h>
Anton Vorontsov3e303f72009-10-15 17:47:04 +040012#include <stdio_dev.h>
Gerald Van Baren64dbbd42007-04-06 14:19:43 -040013#include <linux/ctype.h>
14#include <linux/types.h>
Gerald Van Baren64dbbd42007-04-06 14:19:43 -040015#include <asm/global_data.h>
Gerald Van Baren64dbbd42007-04-06 14:19:43 -040016#include <libfdt.h>
17#include <fdt_support.h>
Kumar Gala151c8b02007-11-26 17:06:15 -060018#include <exports.h>
Gerald Van Baren64dbbd42007-04-06 14:19:43 -040019
Kumar Gala3bed2aa2008-10-23 00:05:47 -050020/**
Alexander Graf94fb1822014-04-11 17:09:40 +020021 * fdt_getprop_u32_default_node - Return a node's property or a default
22 *
23 * @fdt: ptr to device tree
24 * @off: offset of node
25 * @cell: cell offset in property
26 * @prop: property name
27 * @dflt: default value if the property isn't found
28 *
29 * Convenience function to return a node's property or a default value if
30 * the property doesn't exist.
31 */
32u32 fdt_getprop_u32_default_node(const void *fdt, int off, int cell,
33 const char *prop, const u32 dflt)
34{
35 const fdt32_t *val;
36 int len;
37
38 val = fdt_getprop(fdt, off, prop, &len);
39
40 /* Check if property exists */
41 if (!val)
42 return dflt;
43
44 /* Check if property is long enough */
45 if (len < ((cell + 1) * sizeof(uint32_t)))
46 return dflt;
47
48 return fdt32_to_cpu(*val);
49}
50
51/**
Kumar Gala3bed2aa2008-10-23 00:05:47 -050052 * fdt_getprop_u32_default - Find a node and return it's property or a default
53 *
54 * @fdt: ptr to device tree
55 * @path: path of node
56 * @prop: property name
57 * @dflt: default value if the property isn't found
58 *
59 * Convenience function to find a node and return it's property or a
60 * default value if it doesn't exist.
61 */
Gabe Black07e12782011-11-08 01:09:44 -080062u32 fdt_getprop_u32_default(const void *fdt, const char *path,
63 const char *prop, const u32 dflt)
Kumar Gala3bed2aa2008-10-23 00:05:47 -050064{
Kumar Gala3bed2aa2008-10-23 00:05:47 -050065 int off;
66
67 off = fdt_path_offset(fdt, path);
68 if (off < 0)
69 return dflt;
70
Alexander Graf94fb1822014-04-11 17:09:40 +020071 return fdt_getprop_u32_default_node(fdt, off, 0, prop, dflt);
Kumar Gala3bed2aa2008-10-23 00:05:47 -050072}
Gerald Van Baren64dbbd42007-04-06 14:19:43 -040073
Kumar Galaa3c29332007-10-24 10:21:57 -050074/**
75 * fdt_find_and_setprop: Find a node and set it's property
76 *
77 * @fdt: ptr to device tree
78 * @node: path of node
79 * @prop: property name
80 * @val: ptr to new value
81 * @len: length of new property value
82 * @create: flag to create the property if it doesn't exist
83 *
84 * Convenience function to directly set a property given the path to the node.
85 */
86int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
87 const void *val, int len, int create)
88{
Kumar Gala8d04f022007-10-24 11:04:22 -050089 int nodeoff = fdt_path_offset(fdt, node);
Kumar Galaa3c29332007-10-24 10:21:57 -050090
91 if (nodeoff < 0)
92 return nodeoff;
93
Kim Phillips8aa5ec62013-01-16 14:00:11 +000094 if ((!create) && (fdt_get_property(fdt, nodeoff, prop, NULL) == NULL))
Kumar Galaa3c29332007-10-24 10:21:57 -050095 return 0; /* create flag not set; so exit quietly */
96
97 return fdt_setprop(fdt, nodeoff, prop, val, len);
98}
99
Masahiro Yamada8edb2192014-04-18 17:40:58 +0900100/**
Simon Glassa9e8e292014-10-23 18:58:49 -0600101 * fdt_find_or_add_subnode() - find or possibly add a subnode of a given node
102 *
Masahiro Yamada8edb2192014-04-18 17:40:58 +0900103 * @fdt: pointer to the device tree blob
104 * @parentoffset: structure block offset of a node
105 * @name: name of the subnode to locate
106 *
107 * fdt_subnode_offset() finds a subnode of the node with a given name.
108 * If the subnode does not exist, it will be created.
109 */
Simon Glassa9e8e292014-10-23 18:58:49 -0600110int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name)
Masahiro Yamada8edb2192014-04-18 17:40:58 +0900111{
112 int offset;
113
114 offset = fdt_subnode_offset(fdt, parentoffset, name);
115
116 if (offset == -FDT_ERR_NOTFOUND)
117 offset = fdt_add_subnode(fdt, parentoffset, name);
118
119 if (offset < 0)
120 printf("%s: %s: %s\n", __func__, name, fdt_strerror(offset));
121
122 return offset;
123}
124
Masahiro Yamada972f2a82014-04-18 17:41:01 +0900125/* rename to CONFIG_OF_STDOUT_PATH ? */
126#if defined(OF_STDOUT_PATH)
127static int fdt_fixup_stdout(void *fdt, int chosenoff)
128{
129 return fdt_setprop(fdt, chosenoff, "linux,stdout-path",
130 OF_STDOUT_PATH, strlen(OF_STDOUT_PATH) + 1);
131}
132#elif defined(CONFIG_OF_STDOUT_VIA_ALIAS) && defined(CONFIG_CONS_INDEX)
Anton Vorontsov3e303f72009-10-15 17:47:04 +0400133static void fdt_fill_multisername(char *sername, size_t maxlen)
134{
135 const char *outname = stdio_devices[stdout]->name;
136
137 if (strcmp(outname, "serial") > 0)
138 strncpy(sername, outname, maxlen);
139
140 /* eserial? */
141 if (strcmp(outname + 1, "serial") > 0)
142 strncpy(sername, outname + 1, maxlen);
143}
Anton Vorontsov3e303f72009-10-15 17:47:04 +0400144
Detlev Zundel40777812008-06-20 22:24:05 +0200145static int fdt_fixup_stdout(void *fdt, int chosenoff)
Kumar Gala151c8b02007-11-26 17:06:15 -0600146{
Masahiro Yamada972f2a82014-04-18 17:41:01 +0900147 int err;
148 int aliasoff;
Kumar Gala151c8b02007-11-26 17:06:15 -0600149 char sername[9] = { 0 };
Masahiro Yamada972f2a82014-04-18 17:41:01 +0900150 const void *path;
151 int len;
152 char tmp[256]; /* long enough */
Kumar Gala151c8b02007-11-26 17:06:15 -0600153
Anton Vorontsov3e303f72009-10-15 17:47:04 +0400154 fdt_fill_multisername(sername, sizeof(sername) - 1);
155 if (!sername[0])
156 sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1);
Kumar Gala151c8b02007-11-26 17:06:15 -0600157
Masahiro Yamada972f2a82014-04-18 17:41:01 +0900158 aliasoff = fdt_path_offset(fdt, "/aliases");
159 if (aliasoff < 0) {
160 err = aliasoff;
Scott Woodda77c812015-09-01 22:48:08 -0500161 goto noalias;
Kumar Gala151c8b02007-11-26 17:06:15 -0600162 }
Masahiro Yamada972f2a82014-04-18 17:41:01 +0900163
164 path = fdt_getprop(fdt, aliasoff, sername, &len);
165 if (!path) {
166 err = len;
Scott Woodda77c812015-09-01 22:48:08 -0500167 goto noalias;
Masahiro Yamada972f2a82014-04-18 17:41:01 +0900168 }
169
170 /* fdt_setprop may break "path" so we copy it to tmp buffer */
171 memcpy(tmp, path, len);
172
173 err = fdt_setprop(fdt, chosenoff, "linux,stdout-path", tmp, len);
Kumar Gala151c8b02007-11-26 17:06:15 -0600174 if (err < 0)
175 printf("WARNING: could not set linux,stdout-path %s.\n",
Masahiro Yamada972f2a82014-04-18 17:41:01 +0900176 fdt_strerror(err));
Kumar Gala151c8b02007-11-26 17:06:15 -0600177
178 return err;
Scott Woodda77c812015-09-01 22:48:08 -0500179
180noalias:
181 printf("WARNING: %s: could not read %s alias: %s\n",
182 __func__, sername, fdt_strerror(err));
183
184 return 0;
Kumar Gala151c8b02007-11-26 17:06:15 -0600185}
Masahiro Yamada972f2a82014-04-18 17:41:01 +0900186#else
187static int fdt_fixup_stdout(void *fdt, int chosenoff)
188{
189 return 0;
190}
Kumar Gala151c8b02007-11-26 17:06:15 -0600191#endif
192
Masahiro Yamadaf18295d2014-04-18 17:41:04 +0900193static inline int fdt_setprop_uxx(void *fdt, int nodeoffset, const char *name,
194 uint64_t val, int is_u64)
195{
196 if (is_u64)
197 return fdt_setprop_u64(fdt, nodeoffset, name, val);
198 else
199 return fdt_setprop_u32(fdt, nodeoffset, name, (uint32_t)val);
200}
201
Paul Kocialkowski10be5b52015-05-21 11:27:03 +0200202int fdt_root(void *fdt)
203{
204 char *serial;
205 int err;
206
207 err = fdt_check_header(fdt);
208 if (err < 0) {
209 printf("fdt_root: %s\n", fdt_strerror(err));
210 return err;
211 }
212
213 serial = getenv("serial#");
214 if (serial) {
215 err = fdt_setprop(fdt, 0, "serial-number", serial,
216 strlen(serial) + 1);
217
218 if (err < 0) {
219 printf("WARNING: could not set serial-number %s.\n",
220 fdt_strerror(err));
221 return err;
222 }
223 }
224
225 return 0;
226}
Masahiro Yamadaf18295d2014-04-18 17:41:04 +0900227
Masahiro Yamadadbe963a2014-04-18 17:40:59 +0900228int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end)
Kumar Gala2a1a2cb2008-08-15 08:24:43 -0500229{
Masahiro Yamadaf18295d2014-04-18 17:41:04 +0900230 int nodeoffset;
Kumar Gala2a1a2cb2008-08-15 08:24:43 -0500231 int err, j, total;
Masahiro Yamadaf18295d2014-04-18 17:41:04 +0900232 int is_u64;
Kumar Gala2a1a2cb2008-08-15 08:24:43 -0500233 uint64_t addr, size;
234
Masahiro Yamada50babaf2014-04-18 17:41:05 +0900235 /* just return if the size of initrd is zero */
236 if (initrd_start == initrd_end)
237 return 0;
238
Masahiro Yamada8edb2192014-04-18 17:40:58 +0900239 /* find or create "/chosen" node. */
240 nodeoffset = fdt_find_or_add_subnode(fdt, 0, "chosen");
241 if (nodeoffset < 0)
Kumar Gala2a1a2cb2008-08-15 08:24:43 -0500242 return nodeoffset;
Kumar Gala2a1a2cb2008-08-15 08:24:43 -0500243
Kumar Gala2a1a2cb2008-08-15 08:24:43 -0500244 total = fdt_num_mem_rsv(fdt);
245
246 /*
247 * Look for an existing entry and update it. If we don't find
248 * the entry, we will j be the next available slot.
249 */
250 for (j = 0; j < total; j++) {
251 err = fdt_get_mem_rsv(fdt, j, &addr, &size);
252 if (addr == initrd_start) {
253 fdt_del_mem_rsv(fdt, j);
254 break;
255 }
256 }
257
Grant Likelyce6b27a2011-03-28 09:58:55 +0000258 err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start);
Kumar Gala2a1a2cb2008-08-15 08:24:43 -0500259 if (err < 0) {
260 printf("fdt_initrd: %s\n", fdt_strerror(err));
261 return err;
262 }
263
Simon Glass933cdbb2014-10-23 18:58:57 -0600264 is_u64 = (fdt_address_cells(fdt, 0) == 2);
David Fengf77a6062013-12-14 11:47:29 +0800265
Masahiro Yamadaf18295d2014-04-18 17:41:04 +0900266 err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-start",
267 (uint64_t)initrd_start, is_u64);
268
Masahiro Yamadadbe963a2014-04-18 17:40:59 +0900269 if (err < 0) {
270 printf("WARNING: could not set linux,initrd-start %s.\n",
271 fdt_strerror(err));
272 return err;
273 }
Masahiro Yamadaf18295d2014-04-18 17:41:04 +0900274
275 err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-end",
276 (uint64_t)initrd_end, is_u64);
277
Masahiro Yamadadbe963a2014-04-18 17:40:59 +0900278 if (err < 0) {
279 printf("WARNING: could not set linux,initrd-end %s.\n",
280 fdt_strerror(err));
Kumar Gala2a1a2cb2008-08-15 08:24:43 -0500281
Masahiro Yamadadbe963a2014-04-18 17:40:59 +0900282 return err;
Kumar Gala2a1a2cb2008-08-15 08:24:43 -0500283 }
284
285 return 0;
286}
287
Masahiro Yamadabc6ed0f2014-04-18 17:41:00 +0900288int fdt_chosen(void *fdt)
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400289{
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400290 int nodeoffset;
291 int err;
Gerald Van Baren35ec3982007-05-25 22:08:57 -0400292 char *str; /* used to set string properties */
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400293
294 err = fdt_check_header(fdt);
295 if (err < 0) {
Gerald Van Baren5fe6be62007-08-07 21:14:22 -0400296 printf("fdt_chosen: %s\n", fdt_strerror(err));
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400297 return err;
298 }
299
Masahiro Yamada8edb2192014-04-18 17:40:58 +0900300 /* find or create "/chosen" node. */
301 nodeoffset = fdt_find_or_add_subnode(fdt, 0, "chosen");
302 if (nodeoffset < 0)
303 return nodeoffset;
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400304
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400305 str = getenv("bootargs");
Masahiro Yamada972f2a82014-04-18 17:41:01 +0900306 if (str) {
307 err = fdt_setprop(fdt, nodeoffset, "bootargs", str,
308 strlen(str) + 1);
309 if (err < 0) {
Masahiro Yamadabc6ed0f2014-04-18 17:41:00 +0900310 printf("WARNING: could not set bootargs %s.\n",
311 fdt_strerror(err));
Masahiro Yamada972f2a82014-04-18 17:41:01 +0900312 return err;
313 }
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400314 }
Kumar Gala2a1a2cb2008-08-15 08:24:43 -0500315
Masahiro Yamada972f2a82014-04-18 17:41:01 +0900316 return fdt_fixup_stdout(fdt, nodeoffset);
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400317}
318
Kumar Galae93becf2007-11-03 19:46:28 -0500319void do_fixup_by_path(void *fdt, const char *path, const char *prop,
320 const void *val, int len, int create)
321{
322#if defined(DEBUG)
323 int i;
Kumar Galad9ad1152008-02-13 15:09:58 -0600324 debug("Updating property '%s/%s' = ", path, prop);
Kumar Galae93becf2007-11-03 19:46:28 -0500325 for (i = 0; i < len; i++)
326 debug(" %.2x", *(u8*)(val+i));
327 debug("\n");
328#endif
329 int rc = fdt_find_and_setprop(fdt, path, prop, val, len, create);
330 if (rc)
331 printf("Unable to update property %s:%s, err=%s\n",
332 path, prop, fdt_strerror(rc));
333}
334
335void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop,
336 u32 val, int create)
337{
Kim Phillips8aa5ec62013-01-16 14:00:11 +0000338 fdt32_t tmp = cpu_to_fdt32(val);
339 do_fixup_by_path(fdt, path, prop, &tmp, sizeof(tmp), create);
Kumar Galae93becf2007-11-03 19:46:28 -0500340}
341
Kumar Gala9eb77ce2007-11-21 13:30:15 -0600342void do_fixup_by_prop(void *fdt,
343 const char *pname, const void *pval, int plen,
344 const char *prop, const void *val, int len,
345 int create)
346{
347 int off;
348#if defined(DEBUG)
349 int i;
Kumar Galad9ad1152008-02-13 15:09:58 -0600350 debug("Updating property '%s' = ", prop);
Kumar Gala9eb77ce2007-11-21 13:30:15 -0600351 for (i = 0; i < len; i++)
352 debug(" %.2x", *(u8*)(val+i));
353 debug("\n");
354#endif
355 off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen);
356 while (off != -FDT_ERR_NOTFOUND) {
Kim Phillips8aa5ec62013-01-16 14:00:11 +0000357 if (create || (fdt_get_property(fdt, off, prop, NULL) != NULL))
Kumar Gala9eb77ce2007-11-21 13:30:15 -0600358 fdt_setprop(fdt, off, prop, val, len);
359 off = fdt_node_offset_by_prop_value(fdt, off, pname, pval, plen);
360 }
361}
362
363void do_fixup_by_prop_u32(void *fdt,
364 const char *pname, const void *pval, int plen,
365 const char *prop, u32 val, int create)
366{
Kim Phillips8aa5ec62013-01-16 14:00:11 +0000367 fdt32_t tmp = cpu_to_fdt32(val);
368 do_fixup_by_prop(fdt, pname, pval, plen, prop, &tmp, 4, create);
Kumar Gala9eb77ce2007-11-21 13:30:15 -0600369}
370
371void do_fixup_by_compat(void *fdt, const char *compat,
372 const char *prop, const void *val, int len, int create)
373{
374 int off = -1;
375#if defined(DEBUG)
376 int i;
Kumar Galad9ad1152008-02-13 15:09:58 -0600377 debug("Updating property '%s' = ", prop);
Kumar Gala9eb77ce2007-11-21 13:30:15 -0600378 for (i = 0; i < len; i++)
379 debug(" %.2x", *(u8*)(val+i));
380 debug("\n");
381#endif
382 off = fdt_node_offset_by_compatible(fdt, -1, compat);
383 while (off != -FDT_ERR_NOTFOUND) {
Kim Phillips8aa5ec62013-01-16 14:00:11 +0000384 if (create || (fdt_get_property(fdt, off, prop, NULL) != NULL))
Kumar Gala9eb77ce2007-11-21 13:30:15 -0600385 fdt_setprop(fdt, off, prop, val, len);
386 off = fdt_node_offset_by_compatible(fdt, off, compat);
387 }
388}
389
390void do_fixup_by_compat_u32(void *fdt, const char *compat,
391 const char *prop, u32 val, int create)
392{
Kim Phillips8aa5ec62013-01-16 14:00:11 +0000393 fdt32_t tmp = cpu_to_fdt32(val);
394 do_fixup_by_compat(fdt, compat, prop, &tmp, 4, create);
Kumar Gala9eb77ce2007-11-21 13:30:15 -0600395}
396
Masahiro Yamada739a01e2014-04-18 17:41:03 +0900397/*
398 * fdt_pack_reg - pack address and size array into the "reg"-suitable stream
399 */
Simon Glass41f09bb2014-10-23 18:58:55 -0600400static int fdt_pack_reg(const void *fdt, void *buf, u64 *address, u64 *size,
401 int n)
Masahiro Yamada739a01e2014-04-18 17:41:03 +0900402{
403 int i;
Hans de Goedeffccb842014-11-28 14:23:51 +0100404 int address_cells = fdt_address_cells(fdt, 0);
405 int size_cells = fdt_size_cells(fdt, 0);
Masahiro Yamada739a01e2014-04-18 17:41:03 +0900406 char *p = buf;
407
408 for (i = 0; i < n; i++) {
Hans de Goedeffccb842014-11-28 14:23:51 +0100409 if (address_cells == 2)
Masahiro Yamada739a01e2014-04-18 17:41:03 +0900410 *(fdt64_t *)p = cpu_to_fdt64(address[i]);
411 else
412 *(fdt32_t *)p = cpu_to_fdt32(address[i]);
Hans de Goedeffccb842014-11-28 14:23:51 +0100413 p += 4 * address_cells;
Masahiro Yamada739a01e2014-04-18 17:41:03 +0900414
Hans de Goedeffccb842014-11-28 14:23:51 +0100415 if (size_cells == 2)
Masahiro Yamada739a01e2014-04-18 17:41:03 +0900416 *(fdt64_t *)p = cpu_to_fdt64(size[i]);
417 else
418 *(fdt32_t *)p = cpu_to_fdt32(size[i]);
Hans de Goedeffccb842014-11-28 14:23:51 +0100419 p += 4 * size_cells;
Masahiro Yamada739a01e2014-04-18 17:41:03 +0900420 }
421
422 return p - (char *)buf;
423}
424
Doug Anderson5e574542013-04-30 10:22:00 +0000425#ifdef CONFIG_NR_DRAM_BANKS
426#define MEMORY_BANKS_MAX CONFIG_NR_DRAM_BANKS
427#else
Kim Phillips8aa5ec62013-01-16 14:00:11 +0000428#define MEMORY_BANKS_MAX 4
Doug Anderson5e574542013-04-30 10:22:00 +0000429#endif
John Rigbya6bd9e82010-10-13 13:57:33 -0600430int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks)
431{
432 int err, nodeoffset;
Masahiro Yamada739a01e2014-04-18 17:41:03 +0900433 int len;
Kim Phillips8aa5ec62013-01-16 14:00:11 +0000434 u8 tmp[MEMORY_BANKS_MAX * 16]; /* Up to 64-bit address + 64-bit size */
Kumar Gala3c927282007-11-26 14:57:45 -0600435
Kim Phillips8aa5ec62013-01-16 14:00:11 +0000436 if (banks > MEMORY_BANKS_MAX) {
437 printf("%s: num banks %d exceeds hardcoded limit %d."
438 " Recompile with higher MEMORY_BANKS_MAX?\n",
439 __FUNCTION__, banks, MEMORY_BANKS_MAX);
440 return -1;
441 }
442
Kumar Gala3c927282007-11-26 14:57:45 -0600443 err = fdt_check_header(blob);
444 if (err < 0) {
445 printf("%s: %s\n", __FUNCTION__, fdt_strerror(err));
446 return err;
447 }
448
Masahiro Yamada8edb2192014-04-18 17:40:58 +0900449 /* find or create "/memory" node. */
450 nodeoffset = fdt_find_or_add_subnode(blob, 0, "memory");
451 if (nodeoffset < 0)
Miao Yan35940de2013-11-28 17:51:39 +0800452 return nodeoffset;
Masahiro Yamada8edb2192014-04-18 17:40:58 +0900453
Kumar Gala3c927282007-11-26 14:57:45 -0600454 err = fdt_setprop(blob, nodeoffset, "device_type", "memory",
455 sizeof("memory"));
456 if (err < 0) {
457 printf("WARNING: could not set %s %s.\n", "device_type",
458 fdt_strerror(err));
459 return err;
460 }
461
Andre Przywara5c1cf892015-06-21 00:29:54 +0100462 if (!banks)
463 return 0;
464
Masahiro Yamada739a01e2014-04-18 17:41:03 +0900465 len = fdt_pack_reg(blob, tmp, start, size, banks);
Kumar Gala3c927282007-11-26 14:57:45 -0600466
467 err = fdt_setprop(blob, nodeoffset, "reg", tmp, len);
468 if (err < 0) {
469 printf("WARNING: could not set %s %s.\n",
470 "reg", fdt_strerror(err));
471 return err;
472 }
473 return 0;
474}
475
John Rigbya6bd9e82010-10-13 13:57:33 -0600476int fdt_fixup_memory(void *blob, u64 start, u64 size)
477{
478 return fdt_fixup_memory_banks(blob, &start, &size, 1);
479}
480
Kumar Galaba37aa02008-08-19 15:41:18 -0500481void fdt_fixup_ethernet(void *fdt)
Kumar Galaab544632007-11-21 11:11:03 -0600482{
Kumar Galaba37aa02008-08-19 15:41:18 -0500483 int node, i, j;
484 char enet[16], *tmp, *end;
Stephen Warren064d55f2013-05-27 18:01:19 +0000485 char mac[16];
Kumar Galaab544632007-11-21 11:11:03 -0600486 const char *path;
Kumar Galaba37aa02008-08-19 15:41:18 -0500487 unsigned char mac_addr[6];
Kumar Galaab544632007-11-21 11:11:03 -0600488
489 node = fdt_path_offset(fdt, "/aliases");
Kumar Galaba37aa02008-08-19 15:41:18 -0500490 if (node < 0)
491 return;
492
Dan Murphyb1f49ab2013-10-02 14:00:15 -0500493 if (!getenv("ethaddr")) {
494 if (getenv("usbethaddr")) {
495 strcpy(mac, "usbethaddr");
496 } else {
497 debug("No ethernet MAC Address defined\n");
498 return;
499 }
500 } else {
501 strcpy(mac, "ethaddr");
502 }
503
Kumar Galaba37aa02008-08-19 15:41:18 -0500504 i = 0;
505 while ((tmp = getenv(mac)) != NULL) {
506 sprintf(enet, "ethernet%d", i);
507 path = fdt_getprop(fdt, node, enet, NULL);
508 if (!path) {
509 debug("No alias for %s\n", enet);
510 sprintf(mac, "eth%daddr", ++i);
511 continue;
Kumar Galaab544632007-11-21 11:11:03 -0600512 }
Kumar Galaba37aa02008-08-19 15:41:18 -0500513
514 for (j = 0; j < 6; j++) {
515 mac_addr[j] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
516 if (tmp)
517 tmp = (*end) ? end+1 : end;
Kumar Galaab544632007-11-21 11:11:03 -0600518 }
Kumar Galaba37aa02008-08-19 15:41:18 -0500519
520 do_fixup_by_path(fdt, path, "mac-address", &mac_addr, 6, 0);
521 do_fixup_by_path(fdt, path, "local-mac-address",
522 &mac_addr, 6, 1);
523
524 sprintf(mac, "eth%daddr", ++i);
Kumar Galaab544632007-11-21 11:11:03 -0600525 }
526}
Anton Vorontsov18e69a32008-03-14 23:20:18 +0300527
Kumar Gala3082d232008-08-15 08:24:42 -0500528/* Resize the fdt to its actual size + a bit of padding */
Simon Glass5bf58cc2014-07-30 03:59:02 -0600529int fdt_shrink_to_minimum(void *blob)
Kumar Gala3082d232008-08-15 08:24:42 -0500530{
531 int i;
532 uint64_t addr, size;
533 int total, ret;
534 uint actualsize;
535
536 if (!blob)
537 return 0;
538
539 total = fdt_num_mem_rsv(blob);
540 for (i = 0; i < total; i++) {
541 fdt_get_mem_rsv(blob, i, &addr, &size);
Simon Glass92549352011-09-17 06:48:58 +0000542 if (addr == (uintptr_t)blob) {
Kumar Gala3082d232008-08-15 08:24:42 -0500543 fdt_del_mem_rsv(blob, i);
544 break;
545 }
546 }
547
Peter Korsgaardf242a082008-10-28 08:26:52 +0100548 /*
549 * Calculate the actual size of the fdt
Feng Wang3840ebf2010-08-03 16:22:43 +0200550 * plus the size needed for 5 fdt_add_mem_rsv, one
551 * for the fdt itself and 4 for a possible initrd
552 * ((initrd-start + initrd-end) * 2 (name & value))
Peter Korsgaardf242a082008-10-28 08:26:52 +0100553 */
Kumar Gala3082d232008-08-15 08:24:42 -0500554 actualsize = fdt_off_dt_strings(blob) +
Feng Wang3840ebf2010-08-03 16:22:43 +0200555 fdt_size_dt_strings(blob) + 5 * sizeof(struct fdt_reserve_entry);
Kumar Gala3082d232008-08-15 08:24:42 -0500556
557 /* Make it so the fdt ends on a page boundary */
Simon Glass92549352011-09-17 06:48:58 +0000558 actualsize = ALIGN(actualsize + ((uintptr_t)blob & 0xfff), 0x1000);
559 actualsize = actualsize - ((uintptr_t)blob & 0xfff);
Kumar Gala3082d232008-08-15 08:24:42 -0500560
561 /* Change the fdt header to reflect the correct size */
562 fdt_set_totalsize(blob, actualsize);
563
564 /* Add the new reservation */
Simon Glass92549352011-09-17 06:48:58 +0000565 ret = fdt_add_mem_rsv(blob, (uintptr_t)blob, actualsize);
Kumar Gala3082d232008-08-15 08:24:42 -0500566 if (ret < 0)
567 return ret;
568
569 return actualsize;
570}
Kumar Gala8ab451c2008-10-22 23:33:56 -0500571
572#ifdef CONFIG_PCI
Kumar Galacfd700b2009-08-05 09:03:54 -0500573#define CONFIG_SYS_PCI_NR_INBOUND_WIN 4
Kumar Gala8ab451c2008-10-22 23:33:56 -0500574
575#define FDT_PCI_PREFETCH (0x40000000)
576#define FDT_PCI_MEM32 (0x02000000)
577#define FDT_PCI_IO (0x01000000)
578#define FDT_PCI_MEM64 (0x03000000)
579
580int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) {
581
582 int addrcell, sizecell, len, r;
583 u32 *dma_range;
584 /* sized based on pci addr cells, size-cells, & address-cells */
585 u32 dma_ranges[(3 + 2 + 2) * CONFIG_SYS_PCI_NR_INBOUND_WIN];
586
587 addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1);
588 sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1);
589
590 dma_range = &dma_ranges[0];
591 for (r = 0; r < hose->region_count; r++) {
592 u64 bus_start, phys_start, size;
593
Kumar Galaff4e66e2009-02-06 09:49:31 -0600594 /* skip if !PCI_REGION_SYS_MEMORY */
595 if (!(hose->regions[r].flags & PCI_REGION_SYS_MEMORY))
Kumar Gala8ab451c2008-10-22 23:33:56 -0500596 continue;
597
598 bus_start = (u64)hose->regions[r].bus_start;
599 phys_start = (u64)hose->regions[r].phys_start;
600 size = (u64)hose->regions[r].size;
601
602 dma_range[0] = 0;
Kumar Galacfd700b2009-08-05 09:03:54 -0500603 if (size >= 0x100000000ull)
Kumar Gala8ab451c2008-10-22 23:33:56 -0500604 dma_range[0] |= FDT_PCI_MEM64;
605 else
606 dma_range[0] |= FDT_PCI_MEM32;
607 if (hose->regions[r].flags & PCI_REGION_PREFETCH)
608 dma_range[0] |= FDT_PCI_PREFETCH;
609#ifdef CONFIG_SYS_PCI_64BIT
610 dma_range[1] = bus_start >> 32;
611#else
612 dma_range[1] = 0;
613#endif
614 dma_range[2] = bus_start & 0xffffffff;
615
616 if (addrcell == 2) {
617 dma_range[3] = phys_start >> 32;
618 dma_range[4] = phys_start & 0xffffffff;
619 } else {
620 dma_range[3] = phys_start & 0xffffffff;
621 }
622
623 if (sizecell == 2) {
624 dma_range[3 + addrcell + 0] = size >> 32;
625 dma_range[3 + addrcell + 1] = size & 0xffffffff;
626 } else {
627 dma_range[3 + addrcell + 0] = size & 0xffffffff;
628 }
629
630 dma_range += (3 + addrcell + sizecell);
631 }
632
633 len = dma_range - &dma_ranges[0];
634 if (len)
635 fdt_setprop(blob, phb_off, "dma-ranges", &dma_ranges[0], len*4);
636
637 return 0;
638}
639#endif
Stefan Roese30d45c02009-10-21 11:59:52 +0200640
641#ifdef CONFIG_FDT_FIXUP_NOR_FLASH_SIZE
642/*
Stefan Roese8a805df2010-09-16 14:01:53 +0200643 * Provide a weak default function to return the flash bank size.
644 * There might be multiple non-identical flash chips connected to one
645 * chip-select, so we need to pass an index as well.
646 */
647u32 __flash_get_bank_size(int cs, int idx)
648{
649 extern flash_info_t flash_info[];
650
651 /*
652 * As default, a simple 1:1 mapping is provided. Boards with
653 * a different mapping need to supply a board specific mapping
654 * routine.
655 */
656 return flash_info[cs].size;
657}
658u32 flash_get_bank_size(int cs, int idx)
659 __attribute__((weak, alias("__flash_get_bank_size")));
660
661/*
Stefan Roese30d45c02009-10-21 11:59:52 +0200662 * This function can be used to update the size in the "reg" property
Stefan Roese8a805df2010-09-16 14:01:53 +0200663 * of all NOR FLASH device nodes. This is necessary for boards with
Stefan Roese30d45c02009-10-21 11:59:52 +0200664 * non-fixed NOR FLASH sizes.
665 */
Stefan Roese8a805df2010-09-16 14:01:53 +0200666int fdt_fixup_nor_flash_size(void *blob)
Stefan Roese30d45c02009-10-21 11:59:52 +0200667{
668 char compat[][16] = { "cfi-flash", "jedec-flash" };
669 int off;
670 int len;
671 struct fdt_property *prop;
Stefan Roese2778a012010-09-24 13:51:50 +0200672 u32 *reg, *reg2;
Stefan Roese30d45c02009-10-21 11:59:52 +0200673 int i;
674
675 for (i = 0; i < 2; i++) {
676 off = fdt_node_offset_by_compatible(blob, -1, compat[i]);
677 while (off != -FDT_ERR_NOTFOUND) {
Stefan Roese8a805df2010-09-16 14:01:53 +0200678 int idx;
679
Stefan Roese30d45c02009-10-21 11:59:52 +0200680 /*
Stefan Roese8a805df2010-09-16 14:01:53 +0200681 * Found one compatible node, so fixup the size
682 * int its reg properties
Stefan Roese30d45c02009-10-21 11:59:52 +0200683 */
684 prop = fdt_get_property_w(blob, off, "reg", &len);
685 if (prop) {
Stefan Roese8a805df2010-09-16 14:01:53 +0200686 int tuple_size = 3 * sizeof(reg);
Stefan Roese30d45c02009-10-21 11:59:52 +0200687
Stefan Roese8a805df2010-09-16 14:01:53 +0200688 /*
689 * There might be multiple reg-tuples,
690 * so loop through them all
691 */
Stefan Roese2778a012010-09-24 13:51:50 +0200692 reg = reg2 = (u32 *)&prop->data[0];
693 for (idx = 0; idx < (len / tuple_size); idx++) {
Stefan Roese8a805df2010-09-16 14:01:53 +0200694 /*
695 * Update size in reg property
696 */
697 reg[2] = flash_get_bank_size(reg[0],
698 idx);
Stefan Roese2778a012010-09-24 13:51:50 +0200699
700 /*
701 * Point to next reg tuple
702 */
703 reg += 3;
Stefan Roese30d45c02009-10-21 11:59:52 +0200704 }
Stefan Roese2778a012010-09-24 13:51:50 +0200705
706 fdt_setprop(blob, off, "reg", reg2, len);
Stefan Roese30d45c02009-10-21 11:59:52 +0200707 }
708
709 /* Move to next compatible node */
710 off = fdt_node_offset_by_compatible(blob, off,
711 compat[i]);
712 }
713 }
714
Stefan Roese8a805df2010-09-16 14:01:53 +0200715 return 0;
Stefan Roese30d45c02009-10-21 11:59:52 +0200716}
717#endif
Anatolij Gustschin3c950e22010-03-16 17:10:05 +0100718
Matthew McClintockcb2707a2010-10-13 13:39:26 +0200719int fdt_increase_size(void *fdt, int add_len)
720{
721 int newlen;
722
723 newlen = fdt_totalsize(fdt) + add_len;
724
725 /* Open in place with a new len */
726 return fdt_open_into(fdt, fdt, newlen);
727}
728
Anatolij Gustschin3c950e22010-03-16 17:10:05 +0100729#ifdef CONFIG_FDT_FIXUP_PARTITIONS
730#include <jffs2/load_kernel.h>
731#include <mtd_node.h>
732
733struct reg_cell {
734 unsigned int r0;
735 unsigned int r1;
736};
737
738int fdt_del_subnodes(const void *blob, int parent_offset)
739{
740 int off, ndepth;
741 int ret;
742
743 for (ndepth = 0, off = fdt_next_node(blob, parent_offset, &ndepth);
744 (off >= 0) && (ndepth > 0);
745 off = fdt_next_node(blob, off, &ndepth)) {
746 if (ndepth == 1) {
747 debug("delete %s: offset: %x\n",
748 fdt_get_name(blob, off, 0), off);
749 ret = fdt_del_node((void *)blob, off);
750 if (ret < 0) {
751 printf("Can't delete node: %s\n",
752 fdt_strerror(ret));
753 return ret;
754 } else {
755 ndepth = 0;
756 off = parent_offset;
757 }
758 }
759 }
760 return 0;
761}
762
Anatolij Gustschin3c950e22010-03-16 17:10:05 +0100763int fdt_del_partitions(void *blob, int parent_offset)
764{
765 const void *prop;
766 int ndepth = 0;
767 int off;
768 int ret;
769
770 off = fdt_next_node(blob, parent_offset, &ndepth);
771 if (off > 0 && ndepth == 1) {
772 prop = fdt_getprop(blob, off, "label", NULL);
773 if (prop == NULL) {
774 /*
775 * Could not find label property, nand {}; node?
776 * Check subnode, delete partitions there if any.
777 */
778 return fdt_del_partitions(blob, off);
779 } else {
780 ret = fdt_del_subnodes(blob, parent_offset);
781 if (ret < 0) {
782 printf("Can't remove subnodes: %s\n",
783 fdt_strerror(ret));
784 return ret;
785 }
786 }
787 }
788 return 0;
789}
790
791int fdt_node_set_part_info(void *blob, int parent_offset,
792 struct mtd_device *dev)
793{
794 struct list_head *pentry;
795 struct part_info *part;
796 struct reg_cell cell;
797 int off, ndepth = 0;
798 int part_num, ret;
799 char buf[64];
800
801 ret = fdt_del_partitions(blob, parent_offset);
802 if (ret < 0)
803 return ret;
804
805 /*
806 * Check if it is nand {}; subnode, adjust
807 * the offset in this case
808 */
809 off = fdt_next_node(blob, parent_offset, &ndepth);
810 if (off > 0 && ndepth == 1)
811 parent_offset = off;
812
813 part_num = 0;
814 list_for_each_prev(pentry, &dev->parts) {
815 int newoff;
816
817 part = list_entry(pentry, struct part_info, link);
818
Scott Wood06503f12013-10-15 17:41:27 -0500819 debug("%2d: %-20s0x%08llx\t0x%08llx\t%d\n",
Anatolij Gustschin3c950e22010-03-16 17:10:05 +0100820 part_num, part->name, part->size,
821 part->offset, part->mask_flags);
822
Scott Wood06503f12013-10-15 17:41:27 -0500823 sprintf(buf, "partition@%llx", part->offset);
Anatolij Gustschin3c950e22010-03-16 17:10:05 +0100824add_sub:
825 ret = fdt_add_subnode(blob, parent_offset, buf);
826 if (ret == -FDT_ERR_NOSPACE) {
827 ret = fdt_increase_size(blob, 512);
828 if (!ret)
829 goto add_sub;
830 else
831 goto err_size;
832 } else if (ret < 0) {
833 printf("Can't add partition node: %s\n",
834 fdt_strerror(ret));
835 return ret;
836 }
837 newoff = ret;
838
839 /* Check MTD_WRITEABLE_CMD flag */
840 if (part->mask_flags & 1) {
841add_ro:
842 ret = fdt_setprop(blob, newoff, "read_only", NULL, 0);
843 if (ret == -FDT_ERR_NOSPACE) {
844 ret = fdt_increase_size(blob, 512);
845 if (!ret)
846 goto add_ro;
847 else
848 goto err_size;
849 } else if (ret < 0)
850 goto err_prop;
851 }
852
853 cell.r0 = cpu_to_fdt32(part->offset);
854 cell.r1 = cpu_to_fdt32(part->size);
855add_reg:
856 ret = fdt_setprop(blob, newoff, "reg", &cell, sizeof(cell));
857 if (ret == -FDT_ERR_NOSPACE) {
858 ret = fdt_increase_size(blob, 512);
859 if (!ret)
860 goto add_reg;
861 else
862 goto err_size;
863 } else if (ret < 0)
864 goto err_prop;
865
866add_label:
867 ret = fdt_setprop_string(blob, newoff, "label", part->name);
868 if (ret == -FDT_ERR_NOSPACE) {
869 ret = fdt_increase_size(blob, 512);
870 if (!ret)
871 goto add_label;
872 else
873 goto err_size;
874 } else if (ret < 0)
875 goto err_prop;
876
877 part_num++;
878 }
879 return 0;
880err_size:
881 printf("Can't increase blob size: %s\n", fdt_strerror(ret));
882 return ret;
883err_prop:
884 printf("Can't add property: %s\n", fdt_strerror(ret));
885 return ret;
886}
887
888/*
889 * Update partitions in nor/nand nodes using info from
890 * mtdparts environment variable. The nodes to update are
891 * specified by node_info structure which contains mtd device
892 * type and compatible string: E. g. the board code in
893 * ft_board_setup() could use:
894 *
895 * struct node_info nodes[] = {
896 * { "fsl,mpc5121-nfc", MTD_DEV_TYPE_NAND, },
897 * { "cfi-flash", MTD_DEV_TYPE_NOR, },
898 * };
899 *
900 * fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
901 */
902void fdt_fixup_mtdparts(void *blob, void *node_info, int node_info_size)
903{
904 struct node_info *ni = node_info;
905 struct mtd_device *dev;
906 char *parts;
907 int i, idx;
908 int noff;
909
910 parts = getenv("mtdparts");
911 if (!parts)
912 return;
913
914 if (mtdparts_init() != 0)
915 return;
916
917 for (i = 0; i < node_info_size; i++) {
918 idx = 0;
919 noff = fdt_node_offset_by_compatible(blob, -1, ni[i].compat);
920 while (noff != -FDT_ERR_NOTFOUND) {
921 debug("%s: %s, mtd dev type %d\n",
922 fdt_get_name(blob, noff, 0),
923 ni[i].compat, ni[i].type);
924 dev = device_find(ni[i].type, idx++);
925 if (dev) {
926 if (fdt_node_set_part_info(blob, noff, dev))
927 return; /* return on error */
928 }
929
930 /* Jump to next flash node */
931 noff = fdt_node_offset_by_compatible(blob, noff,
932 ni[i].compat);
933 }
934 }
935}
936#endif
Kumar Gala49b97d92010-03-30 10:19:26 -0500937
938void fdt_del_node_and_alias(void *blob, const char *alias)
939{
940 int off = fdt_path_offset(blob, alias);
941
942 if (off < 0)
943 return;
944
945 fdt_del_node(blob, off);
946
947 off = fdt_path_offset(blob, "/aliases");
948 fdt_delprop(blob, off, alias);
949}
Kumar Galaa0342c02010-06-16 14:27:38 -0500950
Kumar Galaa0342c02010-06-16 14:27:38 -0500951/* Max address size we deal with */
952#define OF_MAX_ADDR_CELLS 4
953#define OF_BAD_ADDR ((u64)-1)
954#define OF_CHECK_COUNTS(na, ns) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS && \
955 (ns) > 0)
956
957/* Debug utility */
958#ifdef DEBUG
Kim Phillips8aa5ec62013-01-16 14:00:11 +0000959static void of_dump_addr(const char *s, const fdt32_t *addr, int na)
Kumar Galaa0342c02010-06-16 14:27:38 -0500960{
961 printf("%s", s);
962 while(na--)
963 printf(" %08x", *(addr++));
964 printf("\n");
965}
966#else
Kim Phillips8aa5ec62013-01-16 14:00:11 +0000967static void of_dump_addr(const char *s, const fdt32_t *addr, int na) { }
Kumar Galaa0342c02010-06-16 14:27:38 -0500968#endif
969
970/* Callbacks for bus specific translators */
971struct of_bus {
972 const char *name;
973 const char *addresses;
Scott Wood6395f312010-08-12 18:37:39 -0500974 void (*count_cells)(void *blob, int parentoffset,
Kumar Galaa0342c02010-06-16 14:27:38 -0500975 int *addrc, int *sizec);
Kim Phillips8aa5ec62013-01-16 14:00:11 +0000976 u64 (*map)(fdt32_t *addr, const fdt32_t *range,
Kumar Galaa0342c02010-06-16 14:27:38 -0500977 int na, int ns, int pna);
Kim Phillips8aa5ec62013-01-16 14:00:11 +0000978 int (*translate)(fdt32_t *addr, u64 offset, int na);
Kumar Galaa0342c02010-06-16 14:27:38 -0500979};
980
981/* Default translator (generic bus) */
Arnab Basuf43b4352014-09-08 12:19:59 -0700982void of_bus_default_count_cells(void *blob, int parentoffset,
Kumar Galaa0342c02010-06-16 14:27:38 -0500983 int *addrc, int *sizec)
984{
Kim Phillips8aa5ec62013-01-16 14:00:11 +0000985 const fdt32_t *prop;
Scott Wood6395f312010-08-12 18:37:39 -0500986
Simon Glass933cdbb2014-10-23 18:58:57 -0600987 if (addrc)
988 *addrc = fdt_address_cells(blob, parentoffset);
Scott Wood6395f312010-08-12 18:37:39 -0500989
990 if (sizec) {
991 prop = fdt_getprop(blob, parentoffset, "#size-cells", NULL);
992 if (prop)
Kim Phillips8aa5ec62013-01-16 14:00:11 +0000993 *sizec = be32_to_cpup(prop);
Scott Wood6395f312010-08-12 18:37:39 -0500994 else
995 *sizec = 1;
996 }
Kumar Galaa0342c02010-06-16 14:27:38 -0500997}
998
Kim Phillips8aa5ec62013-01-16 14:00:11 +0000999static u64 of_bus_default_map(fdt32_t *addr, const fdt32_t *range,
Kumar Galaa0342c02010-06-16 14:27:38 -05001000 int na, int ns, int pna)
1001{
1002 u64 cp, s, da;
1003
1004 cp = of_read_number(range, na);
1005 s = of_read_number(range + na + pna, ns);
1006 da = of_read_number(addr, na);
1007
Simon Glasse48f3742014-11-11 12:47:07 -07001008 debug("OF: default map, cp=%" PRIu64 ", s=%" PRIu64
1009 ", da=%" PRIu64 "\n", cp, s, da);
Kumar Galaa0342c02010-06-16 14:27:38 -05001010
1011 if (da < cp || da >= (cp + s))
1012 return OF_BAD_ADDR;
1013 return da - cp;
1014}
1015
Kim Phillips8aa5ec62013-01-16 14:00:11 +00001016static int of_bus_default_translate(fdt32_t *addr, u64 offset, int na)
Kumar Galaa0342c02010-06-16 14:27:38 -05001017{
1018 u64 a = of_read_number(addr, na);
1019 memset(addr, 0, na * 4);
1020 a += offset;
1021 if (na > 1)
Kim Phillips8aa5ec62013-01-16 14:00:11 +00001022 addr[na - 2] = cpu_to_fdt32(a >> 32);
1023 addr[na - 1] = cpu_to_fdt32(a & 0xffffffffu);
Kumar Galaa0342c02010-06-16 14:27:38 -05001024
1025 return 0;
1026}
1027
1028/* Array of bus specific translators */
1029static struct of_bus of_busses[] = {
1030 /* Default */
1031 {
1032 .name = "default",
1033 .addresses = "reg",
1034 .count_cells = of_bus_default_count_cells,
1035 .map = of_bus_default_map,
1036 .translate = of_bus_default_translate,
1037 },
1038};
1039
1040static int of_translate_one(void * blob, int parent, struct of_bus *bus,
Kim Phillips8aa5ec62013-01-16 14:00:11 +00001041 struct of_bus *pbus, fdt32_t *addr,
Kumar Galaa0342c02010-06-16 14:27:38 -05001042 int na, int ns, int pna, const char *rprop)
1043{
Kim Phillips8aa5ec62013-01-16 14:00:11 +00001044 const fdt32_t *ranges;
Kumar Galaa0342c02010-06-16 14:27:38 -05001045 int rlen;
1046 int rone;
1047 u64 offset = OF_BAD_ADDR;
1048
1049 /* Normally, an absence of a "ranges" property means we are
1050 * crossing a non-translatable boundary, and thus the addresses
1051 * below the current not cannot be converted to CPU physical ones.
1052 * Unfortunately, while this is very clear in the spec, it's not
1053 * what Apple understood, and they do have things like /uni-n or
1054 * /ht nodes with no "ranges" property and a lot of perfectly
1055 * useable mapped devices below them. Thus we treat the absence of
1056 * "ranges" as equivalent to an empty "ranges" property which means
1057 * a 1:1 translation at that level. It's up to the caller not to try
1058 * to translate addresses that aren't supposed to be translated in
1059 * the first place. --BenH.
1060 */
Kim Phillips8aa5ec62013-01-16 14:00:11 +00001061 ranges = fdt_getprop(blob, parent, rprop, &rlen);
Kumar Galaa0342c02010-06-16 14:27:38 -05001062 if (ranges == NULL || rlen == 0) {
1063 offset = of_read_number(addr, na);
1064 memset(addr, 0, pna * 4);
1065 debug("OF: no ranges, 1:1 translation\n");
1066 goto finish;
1067 }
1068
1069 debug("OF: walking ranges...\n");
1070
1071 /* Now walk through the ranges */
1072 rlen /= 4;
1073 rone = na + pna + ns;
1074 for (; rlen >= rone; rlen -= rone, ranges += rone) {
1075 offset = bus->map(addr, ranges, na, ns, pna);
1076 if (offset != OF_BAD_ADDR)
1077 break;
1078 }
1079 if (offset == OF_BAD_ADDR) {
1080 debug("OF: not found !\n");
1081 return 1;
1082 }
1083 memcpy(addr, ranges + na, 4 * pna);
1084
1085 finish:
1086 of_dump_addr("OF: parent translation for:", addr, pna);
Simon Glasse48f3742014-11-11 12:47:07 -07001087 debug("OF: with offset: %" PRIu64 "\n", offset);
Kumar Galaa0342c02010-06-16 14:27:38 -05001088
1089 /* Translate it into parent bus space */
1090 return pbus->translate(addr, offset, pna);
1091}
1092
1093/*
1094 * Translate an address from the device-tree into a CPU physical address,
1095 * this walks up the tree and applies the various bus mappings on the
1096 * way.
1097 *
1098 * Note: We consider that crossing any level with #size-cells == 0 to mean
1099 * that translation is impossible (that is we are not dealing with a value
1100 * that can be mapped to a cpu physical address). This is not really specified
1101 * that way, but this is traditionally the way IBM at least do things
1102 */
Kim Phillips8aa5ec62013-01-16 14:00:11 +00001103static u64 __of_translate_address(void *blob, int node_offset, const fdt32_t *in_addr,
1104 const char *rprop)
Kumar Galaa0342c02010-06-16 14:27:38 -05001105{
1106 int parent;
1107 struct of_bus *bus, *pbus;
Kim Phillips8aa5ec62013-01-16 14:00:11 +00001108 fdt32_t addr[OF_MAX_ADDR_CELLS];
Kumar Galaa0342c02010-06-16 14:27:38 -05001109 int na, ns, pna, pns;
1110 u64 result = OF_BAD_ADDR;
1111
1112 debug("OF: ** translation for device %s **\n",
1113 fdt_get_name(blob, node_offset, NULL));
1114
1115 /* Get parent & match bus type */
1116 parent = fdt_parent_offset(blob, node_offset);
1117 if (parent < 0)
1118 goto bail;
1119 bus = &of_busses[0];
1120
1121 /* Cound address cells & copy address locally */
Scott Wood6395f312010-08-12 18:37:39 -05001122 bus->count_cells(blob, parent, &na, &ns);
Kumar Galaa0342c02010-06-16 14:27:38 -05001123 if (!OF_CHECK_COUNTS(na, ns)) {
1124 printf("%s: Bad cell count for %s\n", __FUNCTION__,
1125 fdt_get_name(blob, node_offset, NULL));
1126 goto bail;
1127 }
1128 memcpy(addr, in_addr, na * 4);
1129
1130 debug("OF: bus is %s (na=%d, ns=%d) on %s\n",
1131 bus->name, na, ns, fdt_get_name(blob, parent, NULL));
1132 of_dump_addr("OF: translating address:", addr, na);
1133
1134 /* Translate */
1135 for (;;) {
1136 /* Switch to parent bus */
1137 node_offset = parent;
1138 parent = fdt_parent_offset(blob, node_offset);
1139
1140 /* If root, we have finished */
1141 if (parent < 0) {
1142 debug("OF: reached root node\n");
1143 result = of_read_number(addr, na);
1144 break;
1145 }
1146
1147 /* Get new parent bus and counts */
1148 pbus = &of_busses[0];
Scott Wood6395f312010-08-12 18:37:39 -05001149 pbus->count_cells(blob, parent, &pna, &pns);
Kumar Galaa0342c02010-06-16 14:27:38 -05001150 if (!OF_CHECK_COUNTS(pna, pns)) {
1151 printf("%s: Bad cell count for %s\n", __FUNCTION__,
1152 fdt_get_name(blob, node_offset, NULL));
1153 break;
1154 }
1155
1156 debug("OF: parent bus is %s (na=%d, ns=%d) on %s\n",
1157 pbus->name, pna, pns, fdt_get_name(blob, parent, NULL));
1158
1159 /* Apply bus translation */
1160 if (of_translate_one(blob, node_offset, bus, pbus,
1161 addr, na, ns, pna, rprop))
1162 break;
1163
1164 /* Complete the move up one level */
1165 na = pna;
1166 ns = pns;
1167 bus = pbus;
1168
1169 of_dump_addr("OF: one level translation:", addr, na);
1170 }
1171 bail:
1172
1173 return result;
1174}
1175
Kim Phillips8aa5ec62013-01-16 14:00:11 +00001176u64 fdt_translate_address(void *blob, int node_offset, const fdt32_t *in_addr)
Kumar Galaa0342c02010-06-16 14:27:38 -05001177{
1178 return __of_translate_address(blob, node_offset, in_addr, "ranges");
1179}
Kumar Gala75e73af2010-07-04 12:48:21 -05001180
1181/**
1182 * fdt_node_offset_by_compat_reg: Find a node that matches compatiable and
1183 * who's reg property matches a physical cpu address
1184 *
1185 * @blob: ptr to device tree
1186 * @compat: compatiable string to match
1187 * @compat_off: property name
1188 *
1189 */
1190int fdt_node_offset_by_compat_reg(void *blob, const char *compat,
1191 phys_addr_t compat_off)
1192{
1193 int len, off = fdt_node_offset_by_compatible(blob, -1, compat);
1194 while (off != -FDT_ERR_NOTFOUND) {
Kim Phillips8aa5ec62013-01-16 14:00:11 +00001195 const fdt32_t *reg = fdt_getprop(blob, off, "reg", &len);
Kumar Gala75e73af2010-07-04 12:48:21 -05001196 if (reg) {
1197 if (compat_off == fdt_translate_address(blob, off, reg))
1198 return off;
1199 }
1200 off = fdt_node_offset_by_compatible(blob, off, compat);
1201 }
1202
1203 return -FDT_ERR_NOTFOUND;
1204}
1205
Kumar Galab4b847e2010-07-09 16:18:58 -05001206/**
1207 * fdt_alloc_phandle: Return next free phandle value
1208 *
1209 * @blob: ptr to device tree
1210 */
1211int fdt_alloc_phandle(void *blob)
1212{
Masahiro Yamadab4141192014-11-07 03:03:31 +09001213 int offset;
1214 uint32_t phandle = 0;
Kumar Gala75e73af2010-07-04 12:48:21 -05001215
Kumar Galab4b847e2010-07-09 16:18:58 -05001216 for (offset = fdt_next_node(blob, -1, NULL); offset >= 0;
1217 offset = fdt_next_node(blob, offset, NULL)) {
Timur Tabi50bf17b2011-09-20 18:24:35 -05001218 phandle = max(phandle, fdt_get_phandle(blob, offset));
Kumar Galab4b847e2010-07-09 16:18:58 -05001219 }
1220
1221 return phandle + 1;
1222}
Anatolij Gustschinbeca5a52010-08-18 11:25:20 +02001223
Gerald Van Barena8d2a752011-07-14 21:40:10 -04001224/*
Kumar Galaf117c0f2011-08-01 00:23:23 -05001225 * fdt_set_phandle: Create a phandle property for the given node
Gerald Van Barena8d2a752011-07-14 21:40:10 -04001226 *
1227 * @fdt: ptr to device tree
1228 * @nodeoffset: node to update
1229 * @phandle: phandle value to set (must be unique)
Kumar Galaf117c0f2011-08-01 00:23:23 -05001230 */
1231int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle)
Gerald Van Barena8d2a752011-07-14 21:40:10 -04001232{
1233 int ret;
1234
1235#ifdef DEBUG
1236 int off = fdt_node_offset_by_phandle(fdt, phandle);
1237
1238 if ((off >= 0) && (off != nodeoffset)) {
1239 char buf[64];
1240
1241 fdt_get_path(fdt, nodeoffset, buf, sizeof(buf));
1242 printf("Trying to update node %s with phandle %u ",
1243 buf, phandle);
1244
1245 fdt_get_path(fdt, off, buf, sizeof(buf));
1246 printf("that already exists in node %s.\n", buf);
1247 return -FDT_ERR_BADPHANDLE;
1248 }
1249#endif
1250
1251 ret = fdt_setprop_cell(fdt, nodeoffset, "phandle", phandle);
1252 if (ret < 0)
1253 return ret;
1254
1255 /*
1256 * For now, also set the deprecated "linux,phandle" property, so that we
1257 * don't break older kernels.
1258 */
1259 ret = fdt_setprop_cell(fdt, nodeoffset, "linux,phandle", phandle);
1260
1261 return ret;
1262}
1263
Kumar Gala10aeabd2011-08-01 00:25:20 -05001264/*
1265 * fdt_create_phandle: Create a phandle property for the given node
1266 *
1267 * @fdt: ptr to device tree
1268 * @nodeoffset: node to update
1269 */
Timur Tabi3c927cc2011-09-20 18:24:34 -05001270unsigned int fdt_create_phandle(void *fdt, int nodeoffset)
Kumar Gala10aeabd2011-08-01 00:25:20 -05001271{
1272 /* see if there is a phandle already */
1273 int phandle = fdt_get_phandle(fdt, nodeoffset);
1274
1275 /* if we got 0, means no phandle so create one */
1276 if (phandle == 0) {
Timur Tabi3c927cc2011-09-20 18:24:34 -05001277 int ret;
1278
Kumar Gala10aeabd2011-08-01 00:25:20 -05001279 phandle = fdt_alloc_phandle(fdt);
Timur Tabi3c927cc2011-09-20 18:24:34 -05001280 ret = fdt_set_phandle(fdt, nodeoffset, phandle);
1281 if (ret < 0) {
1282 printf("Can't set phandle %u: %s\n", phandle,
1283 fdt_strerror(ret));
1284 return 0;
1285 }
Kumar Gala10aeabd2011-08-01 00:25:20 -05001286 }
1287
1288 return phandle;
1289}
1290
Shengzhou Liu2a523f52011-10-14 16:26:05 +08001291/*
1292 * fdt_set_node_status: Set status for the given node
1293 *
1294 * @fdt: ptr to device tree
1295 * @nodeoffset: node to update
1296 * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED,
1297 * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE
1298 * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE
1299 */
1300int fdt_set_node_status(void *fdt, int nodeoffset,
1301 enum fdt_status status, unsigned int error_code)
1302{
1303 char buf[16];
1304 int ret = 0;
1305
1306 if (nodeoffset < 0)
1307 return nodeoffset;
1308
1309 switch (status) {
1310 case FDT_STATUS_OKAY:
1311 ret = fdt_setprop_string(fdt, nodeoffset, "status", "okay");
1312 break;
1313 case FDT_STATUS_DISABLED:
1314 ret = fdt_setprop_string(fdt, nodeoffset, "status", "disabled");
1315 break;
1316 case FDT_STATUS_FAIL:
1317 ret = fdt_setprop_string(fdt, nodeoffset, "status", "fail");
1318 break;
1319 case FDT_STATUS_FAIL_ERROR_CODE:
1320 sprintf(buf, "fail-%d", error_code);
1321 ret = fdt_setprop_string(fdt, nodeoffset, "status", buf);
1322 break;
1323 default:
1324 printf("Invalid fdt status: %x\n", status);
1325 ret = -1;
1326 break;
1327 }
1328
1329 return ret;
1330}
1331
1332/*
1333 * fdt_set_status_by_alias: Set status for the given node given an alias
1334 *
1335 * @fdt: ptr to device tree
1336 * @alias: alias of node to update
1337 * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED,
1338 * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE
1339 * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE
1340 */
1341int fdt_set_status_by_alias(void *fdt, const char* alias,
1342 enum fdt_status status, unsigned int error_code)
1343{
1344 int offset = fdt_path_offset(fdt, alias);
1345
1346 return fdt_set_node_status(fdt, offset, status, error_code);
1347}
1348
Tom Wai-Hong Tam096eb3f2012-12-05 14:46:41 +00001349#if defined(CONFIG_VIDEO) || defined(CONFIG_LCD)
Anatolij Gustschinbeca5a52010-08-18 11:25:20 +02001350int fdt_add_edid(void *blob, const char *compat, unsigned char *edid_buf)
1351{
1352 int noff;
1353 int ret;
1354
1355 noff = fdt_node_offset_by_compatible(blob, -1, compat);
1356 if (noff != -FDT_ERR_NOTFOUND) {
1357 debug("%s: %s\n", fdt_get_name(blob, noff, 0), compat);
1358add_edid:
1359 ret = fdt_setprop(blob, noff, "edid", edid_buf, 128);
1360 if (ret == -FDT_ERR_NOSPACE) {
1361 ret = fdt_increase_size(blob, 512);
1362 if (!ret)
1363 goto add_edid;
1364 else
1365 goto err_size;
1366 } else if (ret < 0) {
1367 printf("Can't add property: %s\n", fdt_strerror(ret));
1368 return ret;
1369 }
1370 }
1371 return 0;
1372err_size:
1373 printf("Can't increase blob size: %s\n", fdt_strerror(ret));
1374 return ret;
1375}
1376#endif
Timur Tabibb682002011-05-03 13:24:07 -05001377
1378/*
1379 * Verify the physical address of device tree node for a given alias
1380 *
1381 * This function locates the device tree node of a given alias, and then
1382 * verifies that the physical address of that device matches the given
1383 * parameter. It displays a message if there is a mismatch.
1384 *
1385 * Returns 1 on success, 0 on failure
1386 */
1387int fdt_verify_alias_address(void *fdt, int anode, const char *alias, u64 addr)
1388{
1389 const char *path;
Kim Phillips8aa5ec62013-01-16 14:00:11 +00001390 const fdt32_t *reg;
Timur Tabibb682002011-05-03 13:24:07 -05001391 int node, len;
1392 u64 dt_addr;
1393
1394 path = fdt_getprop(fdt, anode, alias, NULL);
1395 if (!path) {
1396 /* If there's no such alias, then it's not a failure */
1397 return 1;
1398 }
1399
1400 node = fdt_path_offset(fdt, path);
1401 if (node < 0) {
1402 printf("Warning: device tree alias '%s' points to invalid "
1403 "node %s.\n", alias, path);
1404 return 0;
1405 }
1406
1407 reg = fdt_getprop(fdt, node, "reg", &len);
1408 if (!reg) {
1409 printf("Warning: device tree node '%s' has no address.\n",
1410 path);
1411 return 0;
1412 }
1413
1414 dt_addr = fdt_translate_address(fdt, node, reg);
1415 if (addr != dt_addr) {
Simon Glasse48f3742014-11-11 12:47:07 -07001416 printf("Warning: U-Boot configured device %s at address %"
1417 PRIx64 ",\n but the device tree has it address %"
1418 PRIx64 ".\n", alias, addr, dt_addr);
Timur Tabibb682002011-05-03 13:24:07 -05001419 return 0;
1420 }
1421
1422 return 1;
1423}
1424
1425/*
1426 * Returns the base address of an SOC or PCI node
1427 */
1428u64 fdt_get_base_address(void *fdt, int node)
1429{
1430 int size;
1431 u32 naddr;
Kim Phillips8aa5ec62013-01-16 14:00:11 +00001432 const fdt32_t *prop;
Timur Tabibb682002011-05-03 13:24:07 -05001433
Simon Glass933cdbb2014-10-23 18:58:57 -06001434 naddr = fdt_address_cells(fdt, node);
Timur Tabibb682002011-05-03 13:24:07 -05001435
1436 prop = fdt_getprop(fdt, node, "ranges", &size);
1437
1438 return prop ? fdt_translate_address(fdt, node, prop + naddr) : 0;
1439}
Alexander Grafc48e6862014-04-11 17:09:41 +02001440
1441/*
1442 * Read a property of size <prop_len>. Currently only supports 1 or 2 cells.
1443 */
1444static int fdt_read_prop(const fdt32_t *prop, int prop_len, int cell_off,
1445 uint64_t *val, int cells)
1446{
1447 const fdt32_t *prop32 = &prop[cell_off];
1448 const fdt64_t *prop64 = (const fdt64_t *)&prop[cell_off];
1449
1450 if ((cell_off + cells) > prop_len)
1451 return -FDT_ERR_NOSPACE;
1452
1453 switch (cells) {
1454 case 1:
1455 *val = fdt32_to_cpu(*prop32);
1456 break;
1457 case 2:
1458 *val = fdt64_to_cpu(*prop64);
1459 break;
1460 default:
1461 return -FDT_ERR_NOSPACE;
1462 }
1463
1464 return 0;
1465}
1466
1467/**
1468 * fdt_read_range - Read a node's n'th range property
1469 *
1470 * @fdt: ptr to device tree
1471 * @node: offset of node
1472 * @n: range index
1473 * @child_addr: pointer to storage for the "child address" field
1474 * @addr: pointer to storage for the CPU view translated physical start
1475 * @len: pointer to storage for the range length
1476 *
1477 * Convenience function that reads and interprets a specific range out of
1478 * a number of the "ranges" property array.
1479 */
1480int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr,
1481 uint64_t *addr, uint64_t *len)
1482{
1483 int pnode = fdt_parent_offset(fdt, node);
1484 const fdt32_t *ranges;
1485 int pacells;
1486 int acells;
1487 int scells;
1488 int ranges_len;
1489 int cell = 0;
1490 int r = 0;
1491
1492 /*
1493 * The "ranges" property is an array of
1494 * { <child address> <parent address> <size in child address space> }
1495 *
1496 * All 3 elements can span a diffent number of cells. Fetch their size.
1497 */
1498 pacells = fdt_getprop_u32_default_node(fdt, pnode, 0, "#address-cells", 1);
1499 acells = fdt_getprop_u32_default_node(fdt, node, 0, "#address-cells", 1);
1500 scells = fdt_getprop_u32_default_node(fdt, node, 0, "#size-cells", 1);
1501
1502 /* Now try to get the ranges property */
1503 ranges = fdt_getprop(fdt, node, "ranges", &ranges_len);
1504 if (!ranges)
1505 return -FDT_ERR_NOTFOUND;
1506 ranges_len /= sizeof(uint32_t);
1507
1508 /* Jump to the n'th entry */
1509 cell = n * (pacells + acells + scells);
1510
1511 /* Read <child address> */
1512 if (child_addr) {
1513 r = fdt_read_prop(ranges, ranges_len, cell, child_addr,
1514 acells);
1515 if (r)
1516 return r;
1517 }
1518 cell += acells;
1519
1520 /* Read <parent address> */
1521 if (addr)
1522 *addr = fdt_translate_address(fdt, node, ranges + cell);
1523 cell += pacells;
1524
1525 /* Read <size in child address space> */
1526 if (len) {
1527 r = fdt_read_prop(ranges, ranges_len, cell, len, scells);
1528 if (r)
1529 return r;
1530 }
1531
1532 return 0;
1533}
Hans de Goeded4f495a2014-11-17 15:29:11 +01001534
1535/**
1536 * fdt_setup_simplefb_node - Fill and enable a simplefb node
1537 *
1538 * @fdt: ptr to device tree
1539 * @node: offset of the simplefb node
1540 * @base_address: framebuffer base address
1541 * @width: width in pixels
1542 * @height: height in pixels
1543 * @stride: bytes per line
1544 * @format: pixel format string
1545 *
1546 * Convenience function to fill and enable a simplefb node.
1547 */
1548int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width,
1549 u32 height, u32 stride, const char *format)
1550{
1551 char name[32];
1552 fdt32_t cells[4];
1553 int i, addrc, sizec, ret;
1554
1555 of_bus_default_count_cells(fdt, fdt_parent_offset(fdt, node),
1556 &addrc, &sizec);
1557 i = 0;
1558 if (addrc == 2)
1559 cells[i++] = cpu_to_fdt32(base_address >> 32);
1560 cells[i++] = cpu_to_fdt32(base_address);
1561 if (sizec == 2)
1562 cells[i++] = 0;
1563 cells[i++] = cpu_to_fdt32(height * stride);
1564
1565 ret = fdt_setprop(fdt, node, "reg", cells, sizeof(cells[0]) * i);
1566 if (ret < 0)
1567 return ret;
1568
Simon Glassc3ec6462015-04-20 12:37:16 -06001569 snprintf(name, sizeof(name), "framebuffer@%" PRIx64, base_address);
Hans de Goeded4f495a2014-11-17 15:29:11 +01001570 ret = fdt_set_name(fdt, node, name);
1571 if (ret < 0)
1572 return ret;
1573
1574 ret = fdt_setprop_u32(fdt, node, "width", width);
1575 if (ret < 0)
1576 return ret;
1577
1578 ret = fdt_setprop_u32(fdt, node, "height", height);
1579 if (ret < 0)
1580 return ret;
1581
1582 ret = fdt_setprop_u32(fdt, node, "stride", stride);
1583 if (ret < 0)
1584 return ret;
1585
1586 ret = fdt_setprop_string(fdt, node, "format", format);
1587 if (ret < 0)
1588 return ret;
1589
1590 ret = fdt_setprop_string(fdt, node, "status", "okay");
1591 if (ret < 0)
1592 return ret;
1593
1594 return 0;
1595}
Tim Harvey08daa252015-04-08 11:45:39 -07001596
1597/*
1598 * Update native-mode in display-timings from display environment variable.
1599 * The node to update are specified by path.
1600 */
1601int fdt_fixup_display(void *blob, const char *path, const char *display)
1602{
1603 int off, toff;
1604
1605 if (!display || !path)
1606 return -FDT_ERR_NOTFOUND;
1607
1608 toff = fdt_path_offset(blob, path);
1609 if (toff >= 0)
1610 toff = fdt_subnode_offset(blob, toff, "display-timings");
1611 if (toff < 0)
1612 return toff;
1613
1614 for (off = fdt_first_subnode(blob, toff);
1615 off >= 0;
1616 off = fdt_next_subnode(blob, off)) {
1617 uint32_t h = fdt_get_phandle(blob, off);
1618 debug("%s:0x%x\n", fdt_get_name(blob, off, NULL),
1619 fdt32_to_cpu(h));
1620 if (strcasecmp(fdt_get_name(blob, off, NULL), display) == 0)
1621 return fdt_setprop_u32(blob, toff, "native-mode", h);
1622 }
1623 return toff;
1624}