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Gerald Van Baren781e09e2007-03-31 12:22:10 -04001/*
2 * (C) Copyright 2007
3 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
4 * Based on code written by:
5 * Pantelis Antoniou <pantelis.antoniou@gmail.com> and
6 * Matthew McClintock <msm@freescale.com>
7 *
8 * See file CREDITS for list of people who contributed to this
9 * project.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 * MA 02111-1307 USA
25 */
26
27#include <common.h>
28#include <command.h>
29#include <linux/ctype.h>
30#include <linux/types.h>
Gerald Van Baren781e09e2007-03-31 12:22:10 -040031#include <asm/global_data.h>
32#include <fdt.h>
33#include <libfdt.h>
Gerald Van Baren64dbbd42007-04-06 14:19:43 -040034#include <fdt_support.h>
Gerald Van Baren781e09e2007-03-31 12:22:10 -040035
36#define MAX_LEVEL 32 /* how deeply nested we will go */
Gerald Van Barenfd61e552007-06-25 23:25:28 -040037#define SCRATCHPAD 1024 /* bytes of scratchpad memory */
Gerald Van Baren781e09e2007-03-31 12:22:10 -040038
39/*
40 * Global data (for the gd->bd)
41 */
42DECLARE_GLOBAL_DATA_PTR;
43
Gerald Van Baren781e09e2007-03-31 12:22:10 -040044static int fdt_valid(void);
Wolfgang Denk54841ab2010-06-28 22:00:46 +020045static int fdt_parse_prop(char *const*newval, int count, char *data, int *len);
Kumar Galadbaf07c2007-11-21 14:07:46 -060046static int fdt_print(const char *pathp, char *prop, int depth);
Gerald Van Baren781e09e2007-03-31 12:22:10 -040047
Gerald Van Baren781e09e2007-03-31 12:22:10 -040048/*
Gerald Van Barenae9e97f2008-06-10 22:15:58 -040049 * The working_fdt points to our working flattened device tree.
50 */
51struct fdt_header *working_fdt;
52
Kumar Gala54f9c862008-08-15 08:24:39 -050053void set_working_fdt_addr(void *addr)
54{
55 char buf[17];
56
57 working_fdt = addr;
58
59 sprintf(buf, "%lx", (unsigned long)addr);
60 setenv("fdtaddr", buf);
61}
62
Gerald Van Barenae9e97f2008-06-10 22:15:58 -040063/*
Gerald Van Baren781e09e2007-03-31 12:22:10 -040064 * Flattened Device Tree command, see the help for parameter definitions.
65 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +020066int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
Gerald Van Baren781e09e2007-03-31 12:22:10 -040067{
Wolfgang Denk47e26b12010-07-17 01:06:04 +020068 if (argc < 2)
69 return cmd_usage(cmdtp);
Gerald Van Baren781e09e2007-03-31 12:22:10 -040070
Wolfgang Denk47e26b12010-07-17 01:06:04 +020071 /*
Gerald Van Baren781e09e2007-03-31 12:22:10 -040072 * Set the address of the fdt
Wolfgang Denk47e26b12010-07-17 01:06:04 +020073 */
Gerald Van Baren25114032007-05-12 09:47:25 -040074 if (argv[1][0] == 'a') {
Kumar Gala54f9c862008-08-15 08:24:39 -050075 unsigned long addr;
Gerald Van Baren781e09e2007-03-31 12:22:10 -040076 /*
77 * Set the address [and length] of the fdt.
78 */
Kumar Gala7dbc38a2008-08-15 08:24:35 -050079 if (argc == 2) {
80 if (!fdt_valid()) {
81 return 1;
82 }
83 printf("The address of the fdt is %p\n", working_fdt);
84 return 0;
85 }
86
Kumar Gala54f9c862008-08-15 08:24:39 -050087 addr = simple_strtoul(argv[2], NULL, 16);
88 set_working_fdt_addr((void *)addr);
Gerald Van Baren781e09e2007-03-31 12:22:10 -040089
90 if (!fdt_valid()) {
91 return 1;
92 }
93
94 if (argc >= 4) {
95 int len;
96 int err;
97 /*
98 * Optional new length
99 */
Gerald Van Baren91623522007-11-22 17:23:23 -0500100 len = simple_strtoul(argv[3], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500101 if (len < fdt_totalsize(working_fdt)) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400102 printf ("New length %d < existing length %d, "
103 "ignoring.\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500104 len, fdt_totalsize(working_fdt));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400105 } else {
106 /*
107 * Open in place with a new length.
108 */
Kim Phillipse489b9c2008-06-10 11:06:17 -0500109 err = fdt_open_into(working_fdt, working_fdt, len);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400110 if (err != 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400111 printf ("libfdt fdt_open_into(): %s\n",
112 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400113 }
114 }
115 }
116
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200117 /*
Kim Phillipse489b9c2008-06-10 11:06:17 -0500118 * Move the working_fdt
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200119 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400120 } else if (strncmp(argv[1], "mo", 2) == 0) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400121 struct fdt_header *newaddr;
122 int len;
123 int err;
124
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200125 if (argc < 4)
126 return cmd_usage(cmdtp);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400127
128 /*
129 * Set the address and length of the fdt.
130 */
Kim Phillipse489b9c2008-06-10 11:06:17 -0500131 working_fdt = (struct fdt_header *)simple_strtoul(argv[2], NULL, 16);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400132 if (!fdt_valid()) {
133 return 1;
134 }
135
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400136 newaddr = (struct fdt_header *)simple_strtoul(argv[3],NULL,16);
Gerald Van Baren6be07cc2007-04-25 22:47:15 -0400137
138 /*
139 * If the user specifies a length, use that. Otherwise use the
140 * current length.
141 */
142 if (argc <= 4) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500143 len = fdt_totalsize(working_fdt);
Gerald Van Baren6be07cc2007-04-25 22:47:15 -0400144 } else {
145 len = simple_strtoul(argv[4], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500146 if (len < fdt_totalsize(working_fdt)) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400147 printf ("New length 0x%X < existing length "
148 "0x%X, aborting.\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500149 len, fdt_totalsize(working_fdt));
Gerald Van Baren6be07cc2007-04-25 22:47:15 -0400150 return 1;
151 }
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400152 }
153
154 /*
155 * Copy to the new location.
156 */
Kim Phillipse489b9c2008-06-10 11:06:17 -0500157 err = fdt_open_into(working_fdt, newaddr, len);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400158 if (err != 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400159 printf ("libfdt fdt_open_into(): %s\n",
160 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400161 return 1;
162 }
Kim Phillipse489b9c2008-06-10 11:06:17 -0500163 working_fdt = newaddr;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400164
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200165 /*
Gerald Van Baren25114032007-05-12 09:47:25 -0400166 * Make a new node
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200167 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400168 } else if (strncmp(argv[1], "mk", 2) == 0) {
Gerald Van Baren25114032007-05-12 09:47:25 -0400169 char *pathp; /* path */
170 char *nodep; /* new node to add */
171 int nodeoffset; /* node offset from libfdt */
172 int err;
173
174 /*
175 * Parameters: Node path, new node to be appended to the path.
176 */
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200177 if (argc < 4)
178 return cmd_usage(cmdtp);
Gerald Van Baren25114032007-05-12 09:47:25 -0400179
180 pathp = argv[2];
181 nodep = argv[3];
182
Kim Phillipse489b9c2008-06-10 11:06:17 -0500183 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Baren25114032007-05-12 09:47:25 -0400184 if (nodeoffset < 0) {
185 /*
186 * Not found or something else bad happened.
187 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500188 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400189 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400190 return 1;
191 }
Kim Phillipse489b9c2008-06-10 11:06:17 -0500192 err = fdt_add_subnode(working_fdt, nodeoffset, nodep);
Gerald Van Baren25114032007-05-12 09:47:25 -0400193 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400194 printf ("libfdt fdt_add_subnode(): %s\n",
195 fdt_strerror(err));
Gerald Van Baren25114032007-05-12 09:47:25 -0400196 return 1;
197 }
198
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200199 /*
Kim Phillipse489b9c2008-06-10 11:06:17 -0500200 * Set the value of a property in the working_fdt.
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200201 */
Gerald Van Baren25114032007-05-12 09:47:25 -0400202 } else if (argv[1][0] == 's') {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400203 char *pathp; /* path */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400204 char *prop; /* property */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400205 int nodeoffset; /* node offset from libfdt */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400206 static char data[SCRATCHPAD]; /* storage for the property */
207 int len; /* new length of the property */
208 int ret; /* return value */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400209
210 /*
Gerald Van Barenea6d8be2008-01-05 14:52:04 -0500211 * Parameters: Node path, property, optional value.
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400212 */
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200213 if (argc < 4)
214 return cmd_usage(cmdtp);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400215
216 pathp = argv[2];
217 prop = argv[3];
Gerald Van Barenea6d8be2008-01-05 14:52:04 -0500218 if (argc == 4) {
219 len = 0;
220 } else {
Andy Fleming4abd8442008-03-31 20:45:56 -0500221 ret = fdt_parse_prop(&argv[4], argc - 4, data, &len);
Gerald Van Barenea6d8be2008-01-05 14:52:04 -0500222 if (ret != 0)
223 return ret;
224 }
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400225
Kim Phillipse489b9c2008-06-10 11:06:17 -0500226 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Baren25114032007-05-12 09:47:25 -0400227 if (nodeoffset < 0) {
228 /*
229 * Not found or something else bad happened.
230 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500231 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400232 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400233 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400234 }
Gerald Van Baren25114032007-05-12 09:47:25 -0400235
Kim Phillipse489b9c2008-06-10 11:06:17 -0500236 ret = fdt_setprop(working_fdt, nodeoffset, prop, data, len);
Gerald Van Baren25114032007-05-12 09:47:25 -0400237 if (ret < 0) {
238 printf ("libfdt fdt_setprop(): %s\n", fdt_strerror(ret));
239 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400240 }
241
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200242 /*
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400243 * Print (recursive) / List (single level)
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200244 */
Gerald Van Baren25114032007-05-12 09:47:25 -0400245 } else if ((argv[1][0] == 'p') || (argv[1][0] == 'l')) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400246 int depth = MAX_LEVEL; /* how deep to print */
247 char *pathp; /* path */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400248 char *prop; /* property */
249 int ret; /* return value */
Kumar Galaf738b4a2007-10-25 16:15:07 -0500250 static char root[2] = "/";
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400251
252 /*
253 * list is an alias for print, but limited to 1 level
254 */
Gerald Van Baren25114032007-05-12 09:47:25 -0400255 if (argv[1][0] == 'l') {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400256 depth = 1;
257 }
258
259 /*
260 * Get the starting path. The root node is an oddball,
261 * the offset is zero and has no name.
262 */
Kumar Galaf738b4a2007-10-25 16:15:07 -0500263 if (argc == 2)
264 pathp = root;
265 else
266 pathp = argv[2];
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400267 if (argc > 3)
268 prop = argv[3];
269 else
270 prop = NULL;
271
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400272 ret = fdt_print(pathp, prop, depth);
273 if (ret != 0)
274 return ret;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400275
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200276 /*
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400277 * Remove a property/node
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200278 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400279 } else if (strncmp(argv[1], "rm", 2) == 0) {
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400280 int nodeoffset; /* node offset from libfdt */
281 int err;
282
283 /*
284 * Get the path. The root node is an oddball, the offset
285 * is zero and has no name.
286 */
Kim Phillipse489b9c2008-06-10 11:06:17 -0500287 nodeoffset = fdt_path_offset (working_fdt, argv[2]);
Gerald Van Baren25114032007-05-12 09:47:25 -0400288 if (nodeoffset < 0) {
289 /*
290 * Not found or something else bad happened.
291 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500292 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400293 fdt_strerror(nodeoffset));
Gerald Van Baren25114032007-05-12 09:47:25 -0400294 return 1;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400295 }
296 /*
297 * Do the delete. A fourth parameter means delete a property,
298 * otherwise delete the node.
299 */
300 if (argc > 3) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500301 err = fdt_delprop(working_fdt, nodeoffset, argv[3]);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400302 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400303 printf("libfdt fdt_delprop(): %s\n",
304 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400305 return err;
306 }
307 } else {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500308 err = fdt_del_node(working_fdt, nodeoffset);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400309 if (err < 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400310 printf("libfdt fdt_del_node(): %s\n",
311 fdt_strerror(err));
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400312 return err;
313 }
314 }
Kumar Gala804887e2008-02-15 03:34:36 -0600315
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200316 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600317 * Display header info
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200318 */
Kumar Gala804887e2008-02-15 03:34:36 -0600319 } else if (argv[1][0] == 'h') {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500320 u32 version = fdt_version(working_fdt);
321 printf("magic:\t\t\t0x%x\n", fdt_magic(working_fdt));
322 printf("totalsize:\t\t0x%x (%d)\n", fdt_totalsize(working_fdt),
323 fdt_totalsize(working_fdt));
324 printf("off_dt_struct:\t\t0x%x\n",
325 fdt_off_dt_struct(working_fdt));
326 printf("off_dt_strings:\t\t0x%x\n",
327 fdt_off_dt_strings(working_fdt));
328 printf("off_mem_rsvmap:\t\t0x%x\n",
329 fdt_off_mem_rsvmap(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600330 printf("version:\t\t%d\n", version);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500331 printf("last_comp_version:\t%d\n",
332 fdt_last_comp_version(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600333 if (version >= 2)
334 printf("boot_cpuid_phys:\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500335 fdt_boot_cpuid_phys(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600336 if (version >= 3)
337 printf("size_dt_strings:\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500338 fdt_size_dt_strings(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600339 if (version >= 17)
340 printf("size_dt_struct:\t\t0x%x\n",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500341 fdt_size_dt_struct(working_fdt));
342 printf("number mem_rsv:\t\t0x%x\n",
343 fdt_num_mem_rsv(working_fdt));
Kumar Gala804887e2008-02-15 03:34:36 -0600344 printf("\n");
345
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200346 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600347 * Set boot cpu id
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200348 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400349 } else if (strncmp(argv[1], "boo", 3) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600350 unsigned long tmp = simple_strtoul(argv[2], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500351 fdt_set_boot_cpuid_phys(working_fdt, tmp);
Kumar Gala804887e2008-02-15 03:34:36 -0600352
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200353 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600354 * memory command
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200355 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400356 } else if (strncmp(argv[1], "me", 2) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600357 uint64_t addr, size;
358 int err;
Heiko Schocher4b142fe2009-12-03 11:21:21 +0100359 addr = simple_strtoull(argv[2], NULL, 16);
360 size = simple_strtoull(argv[3], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500361 err = fdt_fixup_memory(working_fdt, addr, size);
Kumar Gala804887e2008-02-15 03:34:36 -0600362 if (err < 0)
363 return err;
364
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200365 /*
Kumar Gala804887e2008-02-15 03:34:36 -0600366 * mem reserve commands
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200367 */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400368 } else if (strncmp(argv[1], "rs", 2) == 0) {
Kumar Gala804887e2008-02-15 03:34:36 -0600369 if (argv[2][0] == 'p') {
370 uint64_t addr, size;
Kim Phillipse489b9c2008-06-10 11:06:17 -0500371 int total = fdt_num_mem_rsv(working_fdt);
Kumar Gala804887e2008-02-15 03:34:36 -0600372 int j, err;
373 printf("index\t\t start\t\t size\n");
374 printf("-------------------------------"
375 "-----------------\n");
376 for (j = 0; j < total; j++) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500377 err = fdt_get_mem_rsv(working_fdt, j, &addr, &size);
Kumar Gala804887e2008-02-15 03:34:36 -0600378 if (err < 0) {
379 printf("libfdt fdt_get_mem_rsv(): %s\n",
380 fdt_strerror(err));
381 return err;
382 }
383 printf(" %x\t%08x%08x\t%08x%08x\n", j,
384 (u32)(addr >> 32),
385 (u32)(addr & 0xffffffff),
386 (u32)(size >> 32),
387 (u32)(size & 0xffffffff));
388 }
389 } else if (argv[2][0] == 'a') {
390 uint64_t addr, size;
391 int err;
Kumar Gala804887e2008-02-15 03:34:36 -0600392 addr = simple_strtoull(argv[3], NULL, 16);
393 size = simple_strtoull(argv[4], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500394 err = fdt_add_mem_rsv(working_fdt, addr, size);
Kumar Gala804887e2008-02-15 03:34:36 -0600395
396 if (err < 0) {
397 printf("libfdt fdt_add_mem_rsv(): %s\n",
398 fdt_strerror(err));
399 return err;
400 }
401 } else if (argv[2][0] == 'd') {
402 unsigned long idx = simple_strtoul(argv[3], NULL, 16);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500403 int err = fdt_del_mem_rsv(working_fdt, idx);
Kumar Gala804887e2008-02-15 03:34:36 -0600404
405 if (err < 0) {
406 printf("libfdt fdt_del_mem_rsv(): %s\n",
407 fdt_strerror(err));
408 return err;
409 }
410 } else {
411 /* Unrecognized command */
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200412 return cmd_usage(cmdtp);
Kumar Gala804887e2008-02-15 03:34:36 -0600413 }
Kim Phillips99dffca2007-07-17 13:57:04 -0500414 }
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400415#ifdef CONFIG_OF_BOARD_SETUP
Kim Phillips99dffca2007-07-17 13:57:04 -0500416 /* Call the board-specific fixup routine */
Gerald Van Baren2fb698b2008-06-09 21:02:17 -0400417 else if (strncmp(argv[1], "boa", 3) == 0)
Kim Phillipse489b9c2008-06-10 11:06:17 -0500418 ft_board_setup(working_fdt, gd->bd);
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400419#endif
Kim Phillips99dffca2007-07-17 13:57:04 -0500420 /* Create a chosen node */
Kumar Galaf953d992008-08-15 08:24:34 -0500421 else if (argv[1][0] == 'c') {
422 unsigned long initrd_start = 0, initrd_end = 0;
423
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200424 if ((argc != 2) && (argc != 4))
425 return cmd_usage(cmdtp);
Kumar Galaf953d992008-08-15 08:24:34 -0500426
427 if (argc == 4) {
428 initrd_start = simple_strtoul(argv[2], NULL, 16);
429 initrd_end = simple_strtoul(argv[3], NULL, 16);
430 }
431
Heiko Schocher56844a22008-09-11 08:11:23 +0200432 fdt_chosen(working_fdt, 1);
433 fdt_initrd(working_fdt, initrd_start, initrd_end, 1);
Kumar Gala40afac22008-08-15 08:24:44 -0500434 }
435 /* resize the fdt */
436 else if (strncmp(argv[1], "re", 2) == 0) {
437 fdt_resize(working_fdt);
438 }
439 else {
Kim Phillips99dffca2007-07-17 13:57:04 -0500440 /* Unrecognized command */
Wolfgang Denk47e26b12010-07-17 01:06:04 +0200441 return cmd_usage(cmdtp);
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400442 }
443
444 return 0;
445}
446
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400447/****************************************************************************/
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400448
449static int fdt_valid(void)
450{
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400451 int err;
452
Kim Phillipse489b9c2008-06-10 11:06:17 -0500453 if (working_fdt == NULL) {
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400454 printf ("The address of the fdt is invalid (NULL).\n");
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400455 return 0;
456 }
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400457
Kim Phillipse489b9c2008-06-10 11:06:17 -0500458 err = fdt_check_header(working_fdt);
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400459 if (err == 0)
460 return 1; /* valid */
461
462 if (err < 0) {
Gerald Van Baren25114032007-05-12 09:47:25 -0400463 printf("libfdt fdt_check_header(): %s", fdt_strerror(err));
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400464 /*
465 * Be more informative on bad version.
466 */
467 if (err == -FDT_ERR_BADVERSION) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500468 if (fdt_version(working_fdt) <
469 FDT_FIRST_SUPPORTED_VERSION) {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700470 printf (" - too old, fdt %d < %d",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500471 fdt_version(working_fdt),
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400472 FDT_FIRST_SUPPORTED_VERSION);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500473 working_fdt = NULL;
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400474 }
Kim Phillipse489b9c2008-06-10 11:06:17 -0500475 if (fdt_last_comp_version(working_fdt) >
476 FDT_LAST_SUPPORTED_VERSION) {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700477 printf (" - too new, fdt %d > %d",
Kim Phillipse489b9c2008-06-10 11:06:17 -0500478 fdt_version(working_fdt),
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400479 FDT_LAST_SUPPORTED_VERSION);
Kim Phillipse489b9c2008-06-10 11:06:17 -0500480 working_fdt = NULL;
Gerald Van Baren64dbbd42007-04-06 14:19:43 -0400481 }
482 return 0;
483 }
484 printf("\n");
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400485 return 0;
486 }
487 return 1;
488}
489
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400490/****************************************************************************/
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400491
492/*
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400493 * Parse the user's input, partially heuristic. Valid formats:
Andy Fleming4abd8442008-03-31 20:45:56 -0500494 * <0x00112233 4 05> - an array of cells. Numbers follow standard
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200495 * C conventions.
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400496 * [00 11 22 .. nn] - byte stream
497 * "string" - If the the value doesn't start with "<" or "[", it is
498 * treated as a string. Note that the quotes are
499 * stripped by the parser before we get the string.
Andy Fleming4abd8442008-03-31 20:45:56 -0500500 * newval: An array of strings containing the new property as specified
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200501 * on the command line
Andy Fleming4abd8442008-03-31 20:45:56 -0500502 * count: The number of strings in the array
503 * data: A bytestream to be placed in the property
504 * len: The length of the resulting bytestream
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400505 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +0200506static int fdt_parse_prop(char * const *newval, int count, char *data, int *len)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400507{
508 char *cp; /* temporary char pointer */
Andy Fleming4abd8442008-03-31 20:45:56 -0500509 char *newp; /* temporary newval char pointer */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400510 unsigned long tmp; /* holds converted values */
Andy Fleming4abd8442008-03-31 20:45:56 -0500511 int stridx = 0;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400512
Andy Fleming4abd8442008-03-31 20:45:56 -0500513 *len = 0;
514 newp = newval[0];
515
516 /* An array of cells */
517 if (*newp == '<') {
518 newp++;
519 while ((*newp != '>') && (stridx < count)) {
520 /*
521 * Keep searching until we find that last ">"
522 * That way users don't have to escape the spaces
523 */
524 if (*newp == '\0') {
525 newp = newval[++stridx];
526 continue;
527 }
528
529 cp = newp;
530 tmp = simple_strtoul(cp, &newp, 0);
531 *(uint32_t *)data = __cpu_to_be32(tmp);
532 data += 4;
533 *len += 4;
534
535 /* If the ptr didn't advance, something went wrong */
536 if ((newp - cp) <= 0) {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400537 printf("Sorry, I could not convert \"%s\"\n",
538 cp);
539 return 1;
540 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500541
542 while (*newp == ' ')
543 newp++;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400544 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500545
546 if (*newp != '>') {
547 printf("Unexpected character '%c'\n", *newp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400548 return 1;
549 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500550 } else if (*newp == '[') {
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400551 /*
552 * Byte stream. Convert the values.
553 */
Andy Fleming4abd8442008-03-31 20:45:56 -0500554 newp++;
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500555 while ((stridx < count) && (*newp != ']')) {
556 while (*newp == ' ')
557 newp++;
558 if (*newp == '\0') {
559 newp = newval[++stridx];
560 continue;
561 }
562 if (!isxdigit(*newp))
563 break;
Andy Fleming4abd8442008-03-31 20:45:56 -0500564 tmp = simple_strtoul(newp, &newp, 16);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400565 *data++ = tmp & 0xFF;
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400566 *len = *len + 1;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400567 }
Andy Fleming4abd8442008-03-31 20:45:56 -0500568 if (*newp != ']') {
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700569 printf("Unexpected character '%c'\n", *newp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400570 return 1;
571 }
572 } else {
573 /*
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500574 * Assume it is one or more strings. Copy it into our
575 * data area for convenience (including the
576 * terminating '\0's).
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400577 */
Andy Fleming4abd8442008-03-31 20:45:56 -0500578 while (stridx < count) {
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500579 size_t length = strlen(newp) + 1;
Andy Fleming4abd8442008-03-31 20:45:56 -0500580 strcpy(data, newp);
Ken MacLeod6e748ea2009-09-11 15:16:18 -0500581 data += length;
582 *len += length;
Andy Fleming4abd8442008-03-31 20:45:56 -0500583 newp = newval[++stridx];
584 }
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400585 }
586 return 0;
587}
588
589/****************************************************************************/
590
591/*
592 * Heuristic to guess if this is a string or concatenated strings.
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400593 */
594
595static int is_printable_string(const void *data, int len)
596{
597 const char *s = data;
598
599 /* zero length is not */
600 if (len == 0)
601 return 0;
602
603 /* must terminate with zero */
604 if (s[len - 1] != '\0')
605 return 0;
606
607 /* printable or a null byte (concatenated strings) */
608 while (((*s == '\0') || isprint(*s)) && (len > 0)) {
609 /*
610 * If we see a null, there are three possibilities:
611 * 1) If len == 1, it is the end of the string, printable
612 * 2) Next character also a null, not printable.
613 * 3) Next character not a null, continue to check.
614 */
615 if (s[0] == '\0') {
616 if (len == 1)
617 return 1;
618 if (s[1] == '\0')
619 return 0;
620 }
621 s++;
622 len--;
623 }
624
625 /* Not the null termination, or not done yet: not printable */
626 if (*s != '\0' || (len != 0))
627 return 0;
628
629 return 1;
630}
631
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400632
633/*
634 * Print the property in the best format, a heuristic guess. Print as
635 * a string, concatenated strings, a byte, word, double word, or (if all
636 * else fails) it is printed as a stream of bytes.
637 */
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400638static void print_data(const void *data, int len)
639{
640 int j;
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400641
642 /* no data, don't print */
643 if (len == 0)
644 return;
645
646 /*
647 * It is a string, but it may have multiple strings (embedded '\0's).
648 */
649 if (is_printable_string(data, len)) {
650 puts("\"");
651 j = 0;
652 while (j < len) {
653 if (j > 0)
654 puts("\", \"");
655 puts(data);
656 j += strlen(data) + 1;
657 data += strlen(data) + 1;
658 }
659 puts("\"");
660 return;
661 }
662
Andy Fleming4abd8442008-03-31 20:45:56 -0500663 if ((len %4) == 0) {
664 const u32 *p;
665
666 printf("<");
667 for (j = 0, p = data; j < len/4; j ++)
668 printf("0x%x%s", p[j], j < (len/4 - 1) ? " " : "");
669 printf(">");
670 } else { /* anything else... hexdump */
671 const u8 *s;
672
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400673 printf("[");
674 for (j = 0, s = data; j < len; j++)
675 printf("%02x%s", s[j], j < len - 1 ? " " : "");
676 printf("]");
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400677 }
678}
679
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400680/****************************************************************************/
681
682/*
Kim Phillipse489b9c2008-06-10 11:06:17 -0500683 * Recursively print (a portion of) the working_fdt. The depth parameter
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400684 * determines how deeply nested the fdt is printed.
685 */
Kumar Galadbaf07c2007-11-21 14:07:46 -0600686static int fdt_print(const char *pathp, char *prop, int depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400687{
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400688 static char tabs[MAX_LEVEL+1] =
689 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t"
690 "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
Kumar Galadbaf07c2007-11-21 14:07:46 -0600691 const void *nodep; /* property node pointer */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400692 int nodeoffset; /* node offset from libfdt */
693 int nextoffset; /* next node offset from libfdt */
694 uint32_t tag; /* tag */
695 int len; /* length of the property */
696 int level = 0; /* keep track of nesting level */
Gerald Van Baren91623522007-11-22 17:23:23 -0500697 const struct fdt_property *fdt_prop;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400698
Kim Phillipse489b9c2008-06-10 11:06:17 -0500699 nodeoffset = fdt_path_offset (working_fdt, pathp);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400700 if (nodeoffset < 0) {
701 /*
702 * Not found or something else bad happened.
703 */
Kumar Gala8d04f022007-10-24 11:04:22 -0500704 printf ("libfdt fdt_path_offset() returned %s\n",
Gerald Van Baren06e19a02007-05-21 23:27:16 -0400705 fdt_strerror(nodeoffset));
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400706 return 1;
707 }
708 /*
709 * The user passed in a property as well as node path.
710 * Print only the given property and then return.
711 */
712 if (prop) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500713 nodep = fdt_getprop (working_fdt, nodeoffset, prop, &len);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400714 if (len == 0) {
715 /* no property value */
716 printf("%s %s\n", pathp, prop);
717 return 0;
718 } else if (len > 0) {
Gerald Van Baren28f384b2007-11-23 19:43:20 -0500719 printf("%s = ", prop);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400720 print_data (nodep, len);
721 printf("\n");
722 return 0;
723 } else {
724 printf ("libfdt fdt_getprop(): %s\n",
725 fdt_strerror(len));
726 return 1;
727 }
728 }
729
730 /*
731 * The user passed in a node path and no property,
732 * print the node and all subnodes.
733 */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400734 while(level >= 0) {
Kim Phillipse489b9c2008-06-10 11:06:17 -0500735 tag = fdt_next_tag(working_fdt, nodeoffset, &nextoffset);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400736 switch(tag) {
737 case FDT_BEGIN_NODE:
Kim Phillipse489b9c2008-06-10 11:06:17 -0500738 pathp = fdt_get_name(working_fdt, nodeoffset, NULL);
Gerald Van Baren91623522007-11-22 17:23:23 -0500739 if (level <= depth) {
740 if (pathp == NULL)
741 pathp = "/* NULL pointer error */";
742 if (*pathp == '\0')
743 pathp = "/"; /* root is nameless */
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400744 printf("%s%s {\n",
745 &tabs[MAX_LEVEL - level], pathp);
Gerald Van Baren91623522007-11-22 17:23:23 -0500746 }
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400747 level++;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400748 if (level >= MAX_LEVEL) {
Gerald Van Baren91623522007-11-22 17:23:23 -0500749 printf("Nested too deep, aborting.\n");
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400750 return 1;
751 }
752 break;
753 case FDT_END_NODE:
754 level--;
Gerald Van Baren91623522007-11-22 17:23:23 -0500755 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400756 printf("%s};\n", &tabs[MAX_LEVEL - level]);
757 if (level == 0) {
758 level = -1; /* exit the loop */
759 }
760 break;
761 case FDT_PROP:
Kim Phillipse489b9c2008-06-10 11:06:17 -0500762 fdt_prop = fdt_offset_ptr(working_fdt, nodeoffset,
Gerald Van Baren91623522007-11-22 17:23:23 -0500763 sizeof(*fdt_prop));
Kim Phillipse489b9c2008-06-10 11:06:17 -0500764 pathp = fdt_string(working_fdt,
Gerald Van Baren91623522007-11-22 17:23:23 -0500765 fdt32_to_cpu(fdt_prop->nameoff));
766 len = fdt32_to_cpu(fdt_prop->len);
767 nodep = fdt_prop->data;
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400768 if (len < 0) {
769 printf ("libfdt fdt_getprop(): %s\n",
770 fdt_strerror(len));
771 return 1;
772 } else if (len == 0) {
773 /* the property has no value */
Gerald Van Baren91623522007-11-22 17:23:23 -0500774 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400775 printf("%s%s;\n",
776 &tabs[MAX_LEVEL - level],
777 pathp);
778 } else {
Gerald Van Baren91623522007-11-22 17:23:23 -0500779 if (level <= depth) {
Gerald Van Baren28f384b2007-11-23 19:43:20 -0500780 printf("%s%s = ",
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400781 &tabs[MAX_LEVEL - level],
782 pathp);
783 print_data (nodep, len);
784 printf(";\n");
785 }
786 }
787 break;
788 case FDT_NOP:
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700789 printf("%s/* NOP */\n", &tabs[MAX_LEVEL - level]);
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400790 break;
791 case FDT_END:
792 return 1;
793 default:
Gerald Van Baren91623522007-11-22 17:23:23 -0500794 if (level <= depth)
Gerald Van Barenaddd8ce2007-05-16 22:39:59 -0400795 printf("Unknown tag 0x%08X\n", tag);
796 return 1;
797 }
798 nodeoffset = nextoffset;
799 }
800 return 0;
801}
802
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400803/********************************************************************/
804
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400805U_BOOT_CMD(
Andy Fleming4abd8442008-03-31 20:45:56 -0500806 fdt, 255, 0, do_fdt,
Peter Tyser2fb26042009-01-27 18:03:12 -0600807 "flattened device tree utility commands",
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400808 "addr <addr> [<length>] - Set the fdt location to <addr>\n"
Gerald Van Barenfd61e552007-06-25 23:25:28 -0400809#ifdef CONFIG_OF_BOARD_SETUP
810 "fdt boardsetup - Do board-specific set up\n"
811#endif
Gerald Van Baren238cb7a2008-01-05 15:33:29 -0500812 "fdt move <fdt> <newaddr> <length> - Copy the fdt to <addr> and make it active\n"
Kumar Gala40afac22008-08-15 08:24:44 -0500813 "fdt resize - Resize fdt to size + padding to 4k addr\n"
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400814 "fdt print <path> [<prop>] - Recursive print starting at <path>\n"
815 "fdt list <path> [<prop>] - Print one level starting at <path>\n"
816 "fdt set <path> <prop> [<val>] - Set <property> [to <val>]\n"
817 "fdt mknode <path> <node> - Create a new node after <path>\n"
818 "fdt rm <path> [<prop>] - Delete the node or <property>\n"
Kumar Gala804887e2008-02-15 03:34:36 -0600819 "fdt header - Display header info\n"
820 "fdt bootcpu <id> - Set boot cpuid\n"
821 "fdt memory <addr> <size> - Add/Update memory node\n"
822 "fdt rsvmem print - Show current mem reserves\n"
823 "fdt rsvmem add <addr> <size> - Add a mem reserve\n"
824 "fdt rsvmem delete <index> - Delete a mem reserves\n"
Kumar Galaf953d992008-08-15 08:24:34 -0500825 "fdt chosen [<start> <end>] - Add/update the /chosen branch in the tree\n"
826 " <start>/<end> - initrd start/end addr\n"
Gerald Van Baren109c30f2008-08-22 14:37:05 -0400827 "NOTE: Dereference aliases by omiting the leading '/', "
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200828 "e.g. fdt print ethernet0."
Gerald Van Baren781e09e2007-03-31 12:22:10 -0400829);