blob: 01186aeac7a433a35f888b3fa227712fb6dbab80 [file] [log] [blame]
Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Simon Glass44d3a302013-05-08 08:06:00 +00002/*
3 * Copyright (c) 2013, Google Inc.
4 *
5 * (C) Copyright 2008 Semihalf
6 *
7 * (C) Copyright 2000-2006
8 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
Simon Glass44d3a302013-05-08 08:06:00 +00009 */
10
11#include <common.h>
12#include <fdt_support.h>
Simon Goldschmidte2237a22019-01-14 22:38:17 +010013#include <fdtdec.h>
Simon Glass44d3a302013-05-08 08:06:00 +000014#include <errno.h>
15#include <image.h>
Masahiro Yamadab08c8c42018-03-05 01:20:11 +090016#include <linux/libfdt.h>
Joe Hershberger0eb25b62015-03-22 17:08:59 -050017#include <mapmem.h>
Simon Glass44d3a302013-05-08 08:06:00 +000018#include <asm/io.h>
19
20#ifndef CONFIG_SYS_FDT_PAD
21#define CONFIG_SYS_FDT_PAD 0x3000
22#endif
23
Masahiro Yamadac960a682018-03-21 18:03:33 +090024/* adding a ramdisk needs 0x44 bytes in version 2008.10 */
25#define FDT_RAMDISK_OVERHEAD 0x80
26
Simon Glass44d3a302013-05-08 08:06:00 +000027DECLARE_GLOBAL_DATA_PTR;
28
29static void fdt_error(const char *msg)
30{
31 puts("ERROR: ");
32 puts(msg);
33 puts(" - must RESET the board to recover.\n");
34}
35
Heiko Schocher21d29f72014-05-28 11:33:33 +020036#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
Simon Glass44d3a302013-05-08 08:06:00 +000037static const image_header_t *image_get_fdt(ulong fdt_addr)
38{
39 const image_header_t *fdt_hdr = map_sysmem(fdt_addr, 0);
40
41 image_print_contents(fdt_hdr);
42
43 puts(" Verifying Checksum ... ");
44 if (!image_check_hcrc(fdt_hdr)) {
45 fdt_error("fdt header checksum invalid");
46 return NULL;
47 }
48
49 if (!image_check_dcrc(fdt_hdr)) {
50 fdt_error("fdt checksum invalid");
51 return NULL;
52 }
53 puts("OK\n");
54
55 if (!image_check_type(fdt_hdr, IH_TYPE_FLATDT)) {
56 fdt_error("uImage is not a fdt");
57 return NULL;
58 }
59 if (image_get_comp(fdt_hdr) != IH_COMP_NONE) {
60 fdt_error("uImage is compressed");
61 return NULL;
62 }
Masahiro Yamada2f0877c2013-09-19 12:10:18 +090063 if (fdt_check_header((void *)image_get_data(fdt_hdr)) != 0) {
Simon Glass44d3a302013-05-08 08:06:00 +000064 fdt_error("uImage data is not a fdt");
65 return NULL;
66 }
67 return fdt_hdr;
68}
Heiko Schocher21d29f72014-05-28 11:33:33 +020069#endif
Simon Glass44d3a302013-05-08 08:06:00 +000070
Simon Goldschmidte2237a22019-01-14 22:38:17 +010071static void boot_fdt_reserve_region(struct lmb *lmb, uint64_t addr,
72 uint64_t size)
73{
Patrick Delaunaye1d7ed32019-03-06 14:23:52 +010074 long ret;
Simon Goldschmidte2237a22019-01-14 22:38:17 +010075
76 ret = lmb_reserve(lmb, addr, size);
Patrick Delaunaye1d7ed32019-03-06 14:23:52 +010077 if (ret >= 0) {
Simon Goldschmidte2237a22019-01-14 22:38:17 +010078 debug(" reserving fdt memory region: addr=%llx size=%llx\n",
79 (unsigned long long)addr, (unsigned long long)size);
80 } else {
81 puts("ERROR: reserving fdt memory region failed ");
82 printf("(addr=%llx size=%llx)\n",
83 (unsigned long long)addr, (unsigned long long)size);
84 }
85}
86
Simon Glass44d3a302013-05-08 08:06:00 +000087/**
Simon Goldschmidte2237a22019-01-14 22:38:17 +010088 * boot_fdt_add_mem_rsv_regions - Mark the memreserve and reserved-memory
89 * sections as unusable
Simon Glass44d3a302013-05-08 08:06:00 +000090 * @lmb: pointer to lmb handle, will be used for memory mgmt
91 * @fdt_blob: pointer to fdt blob base address
92 *
Simon Goldschmidte2237a22019-01-14 22:38:17 +010093 * Adds the and reserved-memorymemreserve regions in the dtb to the lmb block.
94 * Adding the memreserve regions prevents u-boot from using them to store the
95 * initrd or the fdt blob.
Simon Glass44d3a302013-05-08 08:06:00 +000096 */
97void boot_fdt_add_mem_rsv_regions(struct lmb *lmb, void *fdt_blob)
98{
99 uint64_t addr, size;
Simon Goldschmidte2237a22019-01-14 22:38:17 +0100100 int i, total, ret;
101 int nodeoffset, subnode;
102 struct fdt_resource res;
Simon Glass44d3a302013-05-08 08:06:00 +0000103
104 if (fdt_check_header(fdt_blob) != 0)
105 return;
106
Simon Goldschmidte2237a22019-01-14 22:38:17 +0100107 /* process memreserve sections */
Simon Glass44d3a302013-05-08 08:06:00 +0000108 total = fdt_num_mem_rsv(fdt_blob);
109 for (i = 0; i < total; i++) {
110 if (fdt_get_mem_rsv(fdt_blob, i, &addr, &size) != 0)
111 continue;
Simon Goldschmidte2237a22019-01-14 22:38:17 +0100112 boot_fdt_reserve_region(lmb, addr, size);
113 }
114
115 /* process reserved-memory */
116 nodeoffset = fdt_subnode_offset(fdt_blob, 0, "reserved-memory");
117 if (nodeoffset >= 0) {
118 subnode = fdt_first_subnode(fdt_blob, nodeoffset);
119 while (subnode >= 0) {
120 /* check if this subnode has a reg property */
121 ret = fdt_get_resource(fdt_blob, subnode, "reg", 0,
122 &res);
123 if (!ret) {
124 addr = res.start;
125 size = res.end - res.start + 1;
126 boot_fdt_reserve_region(lmb, addr, size);
127 }
128
129 subnode = fdt_next_subnode(fdt_blob, subnode);
130 }
Simon Glass44d3a302013-05-08 08:06:00 +0000131 }
132}
133
134/**
135 * boot_relocate_fdt - relocate flat device tree
136 * @lmb: pointer to lmb handle, will be used for memory mgmt
137 * @of_flat_tree: pointer to a char* variable, will hold fdt start address
138 * @of_size: pointer to a ulong variable, will hold fdt length
139 *
140 * boot_relocate_fdt() allocates a region of memory within the bootmap and
141 * relocates the of_flat_tree into that region, even if the fdt is already in
142 * the bootmap. It also expands the size of the fdt by CONFIG_SYS_FDT_PAD
143 * bytes.
144 *
145 * of_flat_tree and of_size are set to final (after relocation) values
146 *
147 * returns:
148 * 0 - success
149 * 1 - failure
150 */
151int boot_relocate_fdt(struct lmb *lmb, char **of_flat_tree, ulong *of_size)
152{
153 void *fdt_blob = *of_flat_tree;
154 void *of_start = NULL;
155 char *fdt_high;
156 ulong of_len = 0;
157 int err;
158 int disable_relocation = 0;
159
160 /* nothing to do */
161 if (*of_size == 0)
162 return 0;
163
164 if (fdt_check_header(fdt_blob) != 0) {
165 fdt_error("image is not a fdt");
166 goto error;
167 }
168
169 /* position on a 4K boundary before the alloc_current */
170 /* Pad the FDT by a specified amount */
171 of_len = *of_size + CONFIG_SYS_FDT_PAD;
172
173 /* If fdt_high is set use it to select the relocation address */
Simon Glass00caae62017-08-03 12:22:12 -0600174 fdt_high = env_get("fdt_high");
Simon Glass44d3a302013-05-08 08:06:00 +0000175 if (fdt_high) {
176 void *desired_addr = (void *)simple_strtoul(fdt_high, NULL, 16);
177
178 if (((ulong) desired_addr) == ~0UL) {
179 /* All ones means use fdt in place */
180 of_start = fdt_blob;
181 lmb_reserve(lmb, (ulong)of_start, of_len);
182 disable_relocation = 1;
183 } else if (desired_addr) {
184 of_start =
185 (void *)(ulong) lmb_alloc_base(lmb, of_len, 0x1000,
186 (ulong)desired_addr);
187 if (of_start == NULL) {
188 puts("Failed using fdt_high value for Device Tree");
189 goto error;
190 }
191 } else {
192 of_start =
193 (void *)(ulong) lmb_alloc(lmb, of_len, 0x1000);
194 }
195 } else {
196 of_start =
197 (void *)(ulong) lmb_alloc_base(lmb, of_len, 0x1000,
Simon Glass723806c2017-08-03 12:22:15 -0600198 env_get_bootm_mapsize()
199 + env_get_bootm_low());
Simon Glass44d3a302013-05-08 08:06:00 +0000200 }
201
202 if (of_start == NULL) {
203 puts("device tree - allocation error\n");
204 goto error;
205 }
206
207 if (disable_relocation) {
208 /*
209 * We assume there is space after the existing fdt to use
210 * for padding
211 */
212 fdt_set_totalsize(of_start, of_len);
213 printf(" Using Device Tree in place at %p, end %p\n",
214 of_start, of_start + of_len - 1);
215 } else {
216 debug("## device tree at %p ... %p (len=%ld [0x%lX])\n",
217 fdt_blob, fdt_blob + *of_size - 1, of_len, of_len);
218
219 printf(" Loading Device Tree to %p, end %p ... ",
220 of_start, of_start + of_len - 1);
221
222 err = fdt_open_into(fdt_blob, of_start, of_len);
223 if (err != 0) {
224 fdt_error("fdt move failed");
225 goto error;
226 }
227 puts("OK\n");
228 }
229
230 *of_flat_tree = of_start;
231 *of_size = of_len;
232
Simon Goldschmidt596be5f2018-12-17 20:14:42 +0100233 if (CONFIG_IS_ENABLED(CMD_FDT))
234 set_working_fdt_addr(map_to_sysmem(*of_flat_tree));
Simon Glass44d3a302013-05-08 08:06:00 +0000235 return 0;
236
237error:
238 return 1;
239}
240
Simon Glass44d3a302013-05-08 08:06:00 +0000241/**
242 * boot_get_fdt - main fdt handling routine
243 * @argc: command argument count
244 * @argv: command argument list
Simon Glass53f375f2013-05-16 13:53:23 +0000245 * @arch: architecture (IH_ARCH_...)
Simon Glass44d3a302013-05-08 08:06:00 +0000246 * @images: pointer to the bootm images structure
247 * @of_flat_tree: pointer to a char* variable, will hold fdt start address
248 * @of_size: pointer to a ulong variable, will hold fdt length
249 *
250 * boot_get_fdt() is responsible for finding a valid flat device tree image.
251 * Curently supported are the following ramdisk sources:
252 * - multicomponent kernel/ramdisk image,
253 * - commandline provided address of decicated ramdisk image.
254 *
255 * returns:
256 * 0, if fdt image was found and valid, or skipped
257 * of_flat_tree and of_size are set to fdt start address and length if
258 * fdt image is found and valid
259 *
260 * 1, if fdt image is found but corrupted
261 * of_flat_tree and of_size are set to 0 if no fdt exists
262 */
Simon Glass53f375f2013-05-16 13:53:23 +0000263int boot_get_fdt(int flag, int argc, char * const argv[], uint8_t arch,
Simon Glass44d3a302013-05-08 08:06:00 +0000264 bootm_headers_t *images, char **of_flat_tree, ulong *of_size)
265{
Heiko Schocher21d29f72014-05-28 11:33:33 +0200266#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
Simon Glass44d3a302013-05-08 08:06:00 +0000267 const image_header_t *fdt_hdr;
Heiko Schocher21d29f72014-05-28 11:33:33 +0200268 ulong load, load_end;
269 ulong image_start, image_data, image_end;
270#endif
Shawn Guo6a7b4062019-01-15 22:26:37 +0800271 ulong img_addr;
Simon Glass44d3a302013-05-08 08:06:00 +0000272 ulong fdt_addr;
273 char *fdt_blob = NULL;
Simon Glass44d3a302013-05-08 08:06:00 +0000274 void *buf;
Simon Glass73223f02016-02-22 22:55:43 -0700275#if CONFIG_IS_ENABLED(FIT)
Simon Glassf320a4d2013-07-10 23:08:10 -0700276 const char *fit_uname_config = images->fit_uname_cfg;
Simon Glass44d3a302013-05-08 08:06:00 +0000277 const char *fit_uname_fdt = NULL;
278 ulong default_addr;
Simon Glass44d3a302013-05-08 08:06:00 +0000279 int fdt_noffset;
Simon Glass44d3a302013-05-08 08:06:00 +0000280#endif
Simon Glass983c72f2013-06-11 11:14:46 -0700281 const char *select = NULL;
Suriyan Ramasami48aead72014-11-27 13:24:16 -0800282 int ok_no_fdt = 0;
Simon Glass44d3a302013-05-08 08:06:00 +0000283
284 *of_flat_tree = NULL;
285 *of_size = 0;
286
Shawn Guo6a7b4062019-01-15 22:26:37 +0800287 img_addr = simple_strtoul(argv[0], NULL, 16);
288 buf = map_sysmem(img_addr, 0);
289
Simon Glass983c72f2013-06-11 11:14:46 -0700290 if (argc > 2)
291 select = argv[2];
292 if (select || genimg_has_config(images)) {
Simon Glass73223f02016-02-22 22:55:43 -0700293#if CONFIG_IS_ENABLED(FIT)
Simon Glass983c72f2013-06-11 11:14:46 -0700294 if (select) {
Simon Glass44d3a302013-05-08 08:06:00 +0000295 /*
296 * If the FDT blob comes from the FIT image and the
297 * FIT image address is omitted in the command line
298 * argument, try to use ramdisk or os FIT image
299 * address or default load address.
300 */
301 if (images->fit_uname_rd)
302 default_addr = (ulong)images->fit_hdr_rd;
303 else if (images->fit_uname_os)
304 default_addr = (ulong)images->fit_hdr_os;
305 else
306 default_addr = load_addr;
307
Simon Glass983c72f2013-06-11 11:14:46 -0700308 if (fit_parse_conf(select, default_addr,
Simon Glass44d3a302013-05-08 08:06:00 +0000309 &fdt_addr, &fit_uname_config)) {
310 debug("* fdt: config '%s' from image at 0x%08lx\n",
311 fit_uname_config, fdt_addr);
Simon Glass983c72f2013-06-11 11:14:46 -0700312 } else if (fit_parse_subimage(select, default_addr,
Simon Glass44d3a302013-05-08 08:06:00 +0000313 &fdt_addr, &fit_uname_fdt)) {
314 debug("* fdt: subimage '%s' from image at 0x%08lx\n",
315 fit_uname_fdt, fdt_addr);
316 } else
317#endif
318 {
Simon Glass983c72f2013-06-11 11:14:46 -0700319 fdt_addr = simple_strtoul(select, NULL, 16);
Simon Glass44d3a302013-05-08 08:06:00 +0000320 debug("* fdt: cmdline image address = 0x%08lx\n",
321 fdt_addr);
322 }
Simon Glass73223f02016-02-22 22:55:43 -0700323#if CONFIG_IS_ENABLED(FIT)
Simon Glass44d3a302013-05-08 08:06:00 +0000324 } else {
325 /* use FIT configuration provided in first bootm
326 * command argument
327 */
328 fdt_addr = map_to_sysmem(images->fit_hdr_os);
Simon Glass53f375f2013-05-16 13:53:23 +0000329 fdt_noffset = fit_get_node_from_config(images,
330 FIT_FDT_PROP,
331 fdt_addr);
Paul Burtonbd86ef12016-09-20 18:17:12 +0100332 if (fdt_noffset == -ENOENT)
Simon Glass44d3a302013-05-08 08:06:00 +0000333 return 0;
Simon Glass53f375f2013-05-16 13:53:23 +0000334 else if (fdt_noffset < 0)
335 return 1;
Simon Glass44d3a302013-05-08 08:06:00 +0000336 }
337#endif
Simon Glass44d3a302013-05-08 08:06:00 +0000338 debug("## Checking for 'FDT'/'FDT Image' at %08lx\n",
339 fdt_addr);
340
Simon Glass44d3a302013-05-08 08:06:00 +0000341 /*
342 * Check if there is an FDT image at the
343 * address provided in the second bootm argument
344 * check image type, for FIT images get a FIT node.
345 */
346 buf = map_sysmem(fdt_addr, 0);
347 switch (genimg_get_format(buf)) {
Heiko Schocher21d29f72014-05-28 11:33:33 +0200348#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
Simon Glass44d3a302013-05-08 08:06:00 +0000349 case IMAGE_FORMAT_LEGACY:
350 /* verify fdt_addr points to a valid image header */
351 printf("## Flattened Device Tree from Legacy Image at %08lx\n",
352 fdt_addr);
353 fdt_hdr = image_get_fdt(fdt_addr);
354 if (!fdt_hdr)
Suriyan Ramasami48aead72014-11-27 13:24:16 -0800355 goto no_fdt;
Simon Glass44d3a302013-05-08 08:06:00 +0000356
357 /*
358 * move image data to the load address,
359 * make sure we don't overwrite initial image
360 */
361 image_start = (ulong)fdt_hdr;
362 image_data = (ulong)image_get_data(fdt_hdr);
363 image_end = image_get_image_end(fdt_hdr);
364
Simon Glass53f375f2013-05-16 13:53:23 +0000365 load = image_get_load(fdt_hdr);
366 load_end = load + image_get_data_size(fdt_hdr);
Simon Glass44d3a302013-05-08 08:06:00 +0000367
Simon Glass53f375f2013-05-16 13:53:23 +0000368 if (load == image_start ||
369 load == image_data) {
Peng Fan2ea47be2015-11-24 16:54:22 +0800370 fdt_addr = load;
Simon Glass44d3a302013-05-08 08:06:00 +0000371 break;
372 }
373
Simon Glass53f375f2013-05-16 13:53:23 +0000374 if ((load < image_end) && (load_end > image_start)) {
Simon Glass44d3a302013-05-08 08:06:00 +0000375 fdt_error("fdt overwritten");
376 goto error;
377 }
378
379 debug(" Loading FDT from 0x%08lx to 0x%08lx\n",
Simon Glass53f375f2013-05-16 13:53:23 +0000380 image_data, load);
Simon Glass44d3a302013-05-08 08:06:00 +0000381
Simon Glass53f375f2013-05-16 13:53:23 +0000382 memmove((void *)load,
Simon Glass44d3a302013-05-08 08:06:00 +0000383 (void *)image_data,
384 image_get_data_size(fdt_hdr));
385
Simon Glass53f375f2013-05-16 13:53:23 +0000386 fdt_addr = load;
Simon Glass44d3a302013-05-08 08:06:00 +0000387 break;
Heiko Schocher21d29f72014-05-28 11:33:33 +0200388#endif
Simon Glass44d3a302013-05-08 08:06:00 +0000389 case IMAGE_FORMAT_FIT:
390 /*
391 * This case will catch both: new uImage format
392 * (libfdt based) and raw FDT blob (also libfdt
393 * based).
394 */
Simon Glass73223f02016-02-22 22:55:43 -0700395#if CONFIG_IS_ENABLED(FIT)
Simon Glass44d3a302013-05-08 08:06:00 +0000396 /* check FDT blob vs FIT blob */
397 if (fit_check_format(buf)) {
Simon Glass53f375f2013-05-16 13:53:23 +0000398 ulong load, len;
Simon Glass44d3a302013-05-08 08:06:00 +0000399
Pantelis Antoniou169043d2017-09-04 23:12:16 +0300400 fdt_noffset = boot_get_fdt_fit(images,
Simon Glass53f375f2013-05-16 13:53:23 +0000401 fdt_addr, &fit_uname_fdt,
Simon Glassf320a4d2013-07-10 23:08:10 -0700402 &fit_uname_config,
Pantelis Antoniou169043d2017-09-04 23:12:16 +0300403 arch, &load, &len);
Simon Glass44d3a302013-05-08 08:06:00 +0000404
Simon Glass53f375f2013-05-16 13:53:23 +0000405 images->fit_hdr_fdt = map_sysmem(fdt_addr, 0);
Simon Glass44d3a302013-05-08 08:06:00 +0000406 images->fit_uname_fdt = fit_uname_fdt;
407 images->fit_noffset_fdt = fdt_noffset;
Simon Glass53f375f2013-05-16 13:53:23 +0000408 fdt_addr = load;
Pantelis Antoniou169043d2017-09-04 23:12:16 +0300409
Simon Glass44d3a302013-05-08 08:06:00 +0000410 break;
411 } else
412#endif
413 {
414 /*
415 * FDT blob
416 */
Simon Glass44d3a302013-05-08 08:06:00 +0000417 debug("* fdt: raw FDT blob\n");
418 printf("## Flattened Device Tree blob at %08lx\n",
419 (long)fdt_addr);
420 }
421 break;
422 default:
423 puts("ERROR: Did not find a cmdline Flattened Device Tree\n");
Suriyan Ramasami48aead72014-11-27 13:24:16 -0800424 goto no_fdt;
Simon Glass44d3a302013-05-08 08:06:00 +0000425 }
426
Simon Glass53f375f2013-05-16 13:53:23 +0000427 printf(" Booting using the fdt blob at %#08lx\n", fdt_addr);
428 fdt_blob = map_sysmem(fdt_addr, 0);
Simon Glass44d3a302013-05-08 08:06:00 +0000429 } else if (images->legacy_hdr_valid &&
430 image_check_type(&images->legacy_hdr_os_copy,
431 IH_TYPE_MULTI)) {
432 ulong fdt_data, fdt_len;
433
434 /*
435 * Now check if we have a legacy multi-component image,
436 * get second entry data start address and len.
437 */
438 printf("## Flattened Device Tree from multi component Image at %08lX\n",
439 (ulong)images->legacy_hdr_os);
440
441 image_multi_getimg(images->legacy_hdr_os, 2, &fdt_data,
442 &fdt_len);
443 if (fdt_len) {
444 fdt_blob = (char *)fdt_data;
445 printf(" Booting using the fdt at 0x%p\n", fdt_blob);
446
447 if (fdt_check_header(fdt_blob) != 0) {
448 fdt_error("image is not a fdt");
449 goto error;
450 }
451
452 if (fdt_totalsize(fdt_blob) != fdt_len) {
453 fdt_error("fdt size != image size");
454 goto error;
455 }
456 } else {
457 debug("## No Flattened Device Tree\n");
Suriyan Ramasami48aead72014-11-27 13:24:16 -0800458 goto no_fdt;
Simon Glass44d3a302013-05-08 08:06:00 +0000459 }
Shawn Guo6a7b4062019-01-15 22:26:37 +0800460#ifdef CONFIG_ANDROID_BOOT_IMAGE
461 } else if (genimg_get_format(buf) == IMAGE_FORMAT_ANDROID) {
462 struct andr_img_hdr *hdr = buf;
463 ulong fdt_data, fdt_len;
464
465 if (android_image_get_second(hdr, &fdt_data, &fdt_len) != 0)
466 goto no_fdt;
467
468 fdt_blob = (char *)fdt_data;
469 if (fdt_check_header(fdt_blob) != 0)
470 goto no_fdt;
471
472 if (fdt_totalsize(fdt_blob) != fdt_len)
473 goto error;
474
475 debug("## Using FDT found in Android image second area\n");
476#endif
Simon Glass44d3a302013-05-08 08:06:00 +0000477 } else {
478 debug("## No Flattened Device Tree\n");
Suriyan Ramasami48aead72014-11-27 13:24:16 -0800479 goto no_fdt;
Simon Glass44d3a302013-05-08 08:06:00 +0000480 }
481
482 *of_flat_tree = fdt_blob;
483 *of_size = fdt_totalsize(fdt_blob);
484 debug(" of_flat_tree at 0x%08lx size 0x%08lx\n",
485 (ulong)*of_flat_tree, *of_size);
486
487 return 0;
488
Suriyan Ramasami48aead72014-11-27 13:24:16 -0800489no_fdt:
490 ok_no_fdt = 1;
Simon Glass44d3a302013-05-08 08:06:00 +0000491error:
492 *of_flat_tree = NULL;
493 *of_size = 0;
Suriyan Ramasami48aead72014-11-27 13:24:16 -0800494 if (!select && ok_no_fdt) {
495 debug("Continuing to boot without FDT\n");
496 return 0;
497 }
Simon Glass44d3a302013-05-08 08:06:00 +0000498 return 1;
499}
Simon Glass13d06982013-05-08 08:06:01 +0000500
501/*
502 * Verify the device tree.
503 *
504 * This function is called after all device tree fix-ups have been enacted,
505 * so that the final device tree can be verified. The definition of "verified"
506 * is up to the specific implementation. However, it generally means that the
507 * addresses of some of the devices in the device tree are compared with the
508 * actual addresses at which U-Boot has placed them.
509 *
Bin Menga1875592016-02-05 19:30:11 -0800510 * Returns 1 on success, 0 on failure. If 0 is returned, U-Boot will halt the
Simon Glass13d06982013-05-08 08:06:01 +0000511 * boot process.
512 */
513__weak int ft_verify_fdt(void *fdt)
514{
515 return 1;
516}
517
Alexey Brodkin42803422018-01-24 20:47:09 +0300518__weak int arch_fixup_fdt(void *blob)
519{
520 return 0;
521}
522
Simon Glass13d06982013-05-08 08:06:01 +0000523int image_setup_libfdt(bootm_headers_t *images, void *blob,
524 int of_size, struct lmb *lmb)
525{
526 ulong *initrd_start = &images->initrd_start;
527 ulong *initrd_end = &images->initrd_end;
Simon Glass6f4dbc22014-10-23 18:58:53 -0600528 int ret = -EPERM;
529 int fdt_ret;
Simon Glass13d06982013-05-08 08:06:01 +0000530
Paul Kocialkowski10be5b52015-05-21 11:27:03 +0200531 if (fdt_root(blob) < 0) {
532 printf("ERROR: root node setup failed\n");
533 goto err;
534 }
Masahiro Yamadabc6ed0f2014-04-18 17:41:00 +0900535 if (fdt_chosen(blob) < 0) {
Simon Glass6f4dbc22014-10-23 18:58:53 -0600536 printf("ERROR: /chosen node create failed\n");
537 goto err;
Simon Glass13d06982013-05-08 08:06:01 +0000538 }
Ma Haijune29607e2014-07-12 14:24:06 +0100539 if (arch_fixup_fdt(blob) < 0) {
Simon Glass6f4dbc22014-10-23 18:58:53 -0600540 printf("ERROR: arch-specific fdt fixup failed\n");
541 goto err;
Ma Haijune29607e2014-07-12 14:24:06 +0100542 }
Tom Rini26d61192017-04-28 08:51:44 -0400543 /* Update ethernet nodes */
544 fdt_fixup_ethernet(blob);
Simon Glass6f4dbc22014-10-23 18:58:53 -0600545 if (IMAGE_OF_BOARD_SETUP) {
546 fdt_ret = ft_board_setup(blob, gd->bd);
547 if (fdt_ret) {
548 printf("ERROR: board-specific fdt fixup failed: %s\n",
549 fdt_strerror(fdt_ret));
550 goto err;
551 }
552 }
Simon Glassc654b512014-10-23 18:58:54 -0600553 if (IMAGE_OF_SYSTEM_SETUP) {
Max Krummenacherd89212b2015-08-05 17:17:03 +0200554 fdt_ret = ft_system_setup(blob, gd->bd);
555 if (fdt_ret) {
Simon Glassc654b512014-10-23 18:58:54 -0600556 printf("ERROR: system-specific fdt fixup failed: %s\n",
557 fdt_strerror(fdt_ret));
558 goto err;
559 }
560 }
Simon Glass13d06982013-05-08 08:06:01 +0000561
562 /* Delete the old LMB reservation */
Alexander Grafdea21742016-03-04 01:10:13 +0100563 if (lmb)
564 lmb_free(lmb, (phys_addr_t)(u32)(uintptr_t)blob,
565 (phys_size_t)fdt_totalsize(blob));
Simon Glass13d06982013-05-08 08:06:01 +0000566
Hannes Schmelzeref476832016-09-20 18:10:43 +0200567 ret = fdt_shrink_to_minimum(blob, 0);
Simon Glass13d06982013-05-08 08:06:01 +0000568 if (ret < 0)
Simon Glass6f4dbc22014-10-23 18:58:53 -0600569 goto err;
Simon Glass13d06982013-05-08 08:06:01 +0000570 of_size = ret;
571
572 if (*initrd_start && *initrd_end) {
573 of_size += FDT_RAMDISK_OVERHEAD;
574 fdt_set_totalsize(blob, of_size);
575 }
576 /* Create a new LMB reservation */
Alexander Grafdea21742016-03-04 01:10:13 +0100577 if (lmb)
578 lmb_reserve(lmb, (ulong)blob, of_size);
Simon Glass13d06982013-05-08 08:06:01 +0000579
Masahiro Yamadadbe963a2014-04-18 17:40:59 +0900580 fdt_initrd(blob, *initrd_start, *initrd_end);
Simon Glass13d06982013-05-08 08:06:01 +0000581 if (!ft_verify_fdt(blob))
Simon Glass6f4dbc22014-10-23 18:58:53 -0600582 goto err;
Simon Glass13d06982013-05-08 08:06:01 +0000583
Khoronzhuk, Ivan7c387642014-07-16 00:59:25 +0300584#if defined(CONFIG_SOC_KEYSTONE)
Vitaly Andrianov00c200f2014-04-04 13:16:47 -0400585 if (IMAGE_OF_BOARD_SETUP)
586 ft_board_setup_ex(blob, gd->bd);
587#endif
588
Simon Glass13d06982013-05-08 08:06:01 +0000589 return 0;
Simon Glass6f4dbc22014-10-23 18:58:53 -0600590err:
591 printf(" - must RESET the board to recover.\n\n");
592
593 return ret;
Simon Glass13d06982013-05-08 08:06:01 +0000594}