Merge remote-tracking branch 'remotes/tx6/tx6' into karo-tx-uboot
[karo-tx-uboot.git] / board / karo / tx6 / flash.c
1 /*
2  * Copyright (C) 2012-2015 Lothar WaƟmann <LW@KARO-electronics.de>
3  *
4  * See file CREDITS for list of people who contributed to this
5  * project.
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License
9  * version 2 as published by the Free Software Foundation.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  */
17
18 #include <common.h>
19 #include <malloc.h>
20 #include <nand.h>
21 #include <errno.h>
22
23 #include <linux/err.h>
24 #include <jffs2/load_kernel.h>
25
26 #include <asm/io.h>
27 #include <linux/sizes.h>
28 #include <asm/arch/imx-regs.h>
29 #include <asm/imx-common/regs-gpmi.h>
30 #include <asm/imx-common/regs-bch.h>
31
32 struct mx6_nand_timing {
33         u8 data_setup;
34         u8 data_hold;
35         u8 address_setup;
36         u8 dsample_time;
37         u8 nand_timing_state;
38         u8 tREA;
39         u8 tRLOH;
40         u8 tRHOH;
41 };
42
43 struct mx6_fcb {
44         u32 checksum;
45         u32 fingerprint;
46         u32 version;
47         struct mx6_nand_timing timing;
48         u32 page_data_size;
49         u32 total_page_size;
50         u32 sectors_per_block;
51         u32 number_of_nands;    /* not used by ROM code */
52         u32 total_internal_die; /* not used by ROM code */
53         u32 cell_type;          /* not used by ROM code */
54         u32 ecc_blockn_type;
55         u32 ecc_block0_size;
56         u32 ecc_blockn_size;
57         u32 ecc_block0_type;
58         u32 metadata_size;
59         u32 ecc_blocks_per_page;
60         u32 rsrvd1[6];          /* not used by ROM code */
61         u32 bch_mode;           /* erase_threshold */
62         u32 rsrvd2[2];
63         u32 fw1_start_page;
64         u32 fw2_start_page;
65         u32 fw1_sectors;
66         u32 fw2_sectors;
67         u32 dbbt_search_area;
68         u32 bb_mark_byte;
69         u32 bb_mark_startbit;
70         u32 bb_mark_phys_offset;
71         u32 bch_type;
72         u32 rsrvd3[8]; /* Toggle NAND timing parameters */
73         u32 disbbm;
74         u32 bb_mark_spare_offset;
75         u32 rsrvd4[9]; /* ONFI NAND parameters */
76         u32 disbb_search;
77 };
78
79 struct mx6_dbbt_header {
80         u32 checksum;
81         u32 fingerprint;
82         u32 version;
83         u32 number_bb;
84         u32 number_pages;
85         u8 spare[492];
86 };
87
88 struct mx6_dbbt {
89         u32 nand_number;
90         u32 number_bb;
91         u32 bb_num[2040 / 4];
92 };
93
94 struct mx6_ivt {
95         u32 magic;
96         u32 app_start_addr;
97         u32 rsrvd1;
98         void *dcd;
99         void *boot_data;
100         void *self;
101         void *csf;
102         u32 rsrvd2;
103 };
104
105 struct mx6_boot_data {
106         void *start;
107         u32 length;
108         u32 plugin;
109 };
110
111 #define BF_VAL(v, bf)           (((v) & bf##_MASK) >> bf##_OFFSET)
112
113 static nand_info_t *mtd = &nand_info[0];
114 static bool doit;
115
116 #define BIT(v,n)        (((v) >> (n)) & 0x1)
117
118 static u8 calculate_parity_13_8(u8 d)
119 {
120         u8 p = 0;
121
122         p |= (BIT(d, 6) ^ BIT(d, 5) ^ BIT(d, 3) ^ BIT(d, 2))             << 0;
123         p |= (BIT(d, 7) ^ BIT(d, 5) ^ BIT(d, 4) ^ BIT(d, 2) ^ BIT(d, 1)) << 1;
124         p |= (BIT(d, 7) ^ BIT(d, 6) ^ BIT(d, 5) ^ BIT(d, 1) ^ BIT(d, 0)) << 2;
125         p |= (BIT(d, 7) ^ BIT(d, 4) ^ BIT(d, 3) ^ BIT(d, 0))             << 3;
126         p |= (BIT(d, 6) ^ BIT(d, 4) ^ BIT(d, 3) ^ BIT(d, 2) ^ BIT(d, 1) ^ BIT(d, 0)) << 4;
127         return p;
128 }
129
130 static void encode_hamming_13_8(void *_src, void *_ecc, size_t size)
131 {
132         int i;
133         u8 *src = _src;
134         u8 *ecc = _ecc;
135
136         for (i = 0; i < size; i++)
137                 ecc[i] = calculate_parity_13_8(src[i]);
138 }
139
140 static u32 calc_chksum(void *buf, size_t size)
141 {
142         u32 chksum = 0;
143         u8 *bp = buf;
144         size_t i;
145
146         for (i = 0; i < size; i++) {
147                 chksum += bp[i];
148         }
149         return ~chksum;
150 }
151
152 /*
153   Physical organisation of data in NAND flash:
154   metadata
155   payload chunk 0 (may be empty)
156   ecc for metadata + payload chunk 0
157   payload chunk 1
158   ecc for payload chunk 1
159 ...
160   payload chunk n
161   ecc for payload chunk n
162  */
163
164 static inline int calc_bb_offset(nand_info_t *mtd, struct mx6_fcb *fcb)
165 {
166         int bb_mark_offset;
167         int chunk_data_size = fcb->ecc_blockn_size * 8;
168         int chunk_ecc_size = (fcb->ecc_blockn_type << 1) * 13;
169         int chunk_total_size = chunk_data_size + chunk_ecc_size;
170         int bb_mark_chunk, bb_mark_chunk_offs;
171
172         bb_mark_offset = (mtd->writesize - fcb->metadata_size) * 8;
173         if (fcb->ecc_block0_size == 0)
174                 bb_mark_offset -= (fcb->ecc_block0_type << 1) * 13;
175
176         bb_mark_chunk = bb_mark_offset / chunk_total_size;
177         bb_mark_chunk_offs = bb_mark_offset - (bb_mark_chunk * chunk_total_size);
178         if (bb_mark_chunk_offs > chunk_data_size) {
179                 printf("Unsupported ECC layout; BB mark resides in ECC data: %u\n",
180                         bb_mark_chunk_offs);
181                 return -EINVAL;
182         }
183         bb_mark_offset -= bb_mark_chunk * chunk_ecc_size;
184         return bb_mark_offset;
185 }
186
187 /*
188  * return number of blocks to skip for a contiguous partition
189  * of given # blocks
190  */
191 static int find_contig_space(int block, int num_blocks, int max_blocks)
192 {
193         int skip = 0;
194         int found = 0;
195         int last = block + max_blocks;
196
197         debug("Searching %u contiguous blocks from %d..%d\n",
198                 num_blocks, block, block + max_blocks - 1);
199         for (; block < last; block++) {
200                 if (nand_block_isbad(mtd, block * mtd->erasesize)) {
201                         skip += found + 1;
202                         found = 0;
203                         debug("Skipping %u blocks to %u\n",
204                                 skip, block + 1);
205                 } else {
206                         found++;
207                         if (found >= num_blocks) {
208                                 debug("Found %u good blocks from %d..%d\n",
209                                         found, block - found + 1, block);
210                                 return skip;
211                         }
212                 }
213         }
214         return -ENOSPC;
215 }
216
217 #define offset_of(p, m)         ((void *)&(p)->m - (void *)(p))
218 #define pr_fcb_val(p, n)        debug("%-24s[%02x]=%08x(%d)\n", #n, offset_of(p, n), (p)->n, (p)->n)
219
220 static struct mx6_fcb *create_fcb(void *buf, int fw1_start_block,
221                                 int fw2_start_block, int fw_num_blocks)
222 {
223         struct gpmi_regs *gpmi_base = (void *)GPMI_BASE_ADDRESS;
224         struct bch_regs *bch_base = (void *)BCH_BASE_ADDRESS;
225         u32 fl0, fl1;
226         u32 t0;
227         int metadata_size;
228         int bb_mark_bit_offs;
229         struct mx6_fcb *fcb;
230         int fcb_offs;
231
232         if (gpmi_base == NULL || bch_base == NULL) {
233                 return ERR_PTR(-ENOMEM);
234         }
235
236         fl0 = readl(&bch_base->hw_bch_flash0layout0);
237         fl1 = readl(&bch_base->hw_bch_flash0layout1);
238         t0 = readl(&gpmi_base->hw_gpmi_timing0);
239
240         metadata_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_META_SIZE);
241
242         fcb = buf + ALIGN(metadata_size, 4);
243         fcb_offs = (void *)fcb - buf;
244
245         memset(buf, 0xff, fcb_offs);
246         memset(fcb, 0x00, sizeof(*fcb));
247         memset(fcb + 1, 0xff, mtd->erasesize - fcb_offs - sizeof(*fcb));
248
249         strncpy((char *)&fcb->fingerprint, "FCB ", 4);
250         fcb->version = cpu_to_be32(1);
251
252         fcb->disbb_search = 0;
253         fcb->disbbm = 1;
254
255         /* ROM code assumes GPMI clock of 25 MHz */
256         fcb->timing.data_setup = BF_VAL(t0, GPMI_TIMING0_DATA_SETUP) * 40;
257         fcb->timing.data_hold = BF_VAL(t0, GPMI_TIMING0_DATA_HOLD) * 40;
258         fcb->timing.address_setup = BF_VAL(t0, GPMI_TIMING0_ADDRESS_SETUP) * 40;
259
260         fcb->page_data_size = mtd->writesize;
261         fcb->total_page_size = mtd->writesize + mtd->oobsize;
262         fcb->sectors_per_block = mtd->erasesize / mtd->writesize;
263
264         fcb->ecc_block0_type = BF_VAL(fl0, BCH_FLASHLAYOUT0_ECC0);
265         fcb->ecc_block0_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_DATA0_SIZE) * 4;
266         fcb->ecc_blockn_type = BF_VAL(fl1, BCH_FLASHLAYOUT1_ECCN);
267         fcb->ecc_blockn_size = BF_VAL(fl1, BCH_FLASHLAYOUT1_DATAN_SIZE) * 4;
268
269         pr_fcb_val(fcb, ecc_block0_type);
270         pr_fcb_val(fcb, ecc_blockn_type);
271         pr_fcb_val(fcb, ecc_block0_size);
272         pr_fcb_val(fcb, ecc_blockn_size);
273
274         fcb->metadata_size = BF_VAL(fl0, BCH_FLASHLAYOUT0_META_SIZE);
275         fcb->ecc_blocks_per_page = BF_VAL(fl0, BCH_FLASHLAYOUT0_NBLOCKS);
276         fcb->bch_mode = readl(&bch_base->hw_bch_mode);
277         fcb->bch_type = 0; /* BCH20 */
278
279         fcb->fw1_start_page = fw1_start_block * fcb->sectors_per_block;
280         fcb->fw1_sectors = fw_num_blocks * fcb->sectors_per_block;
281         pr_fcb_val(fcb, fw1_start_page);
282         pr_fcb_val(fcb, fw1_sectors);
283
284         if (fw2_start_block != 0 && fw2_start_block < mtd->size / mtd->erasesize) {
285                 fcb->fw2_start_page = fw2_start_block * fcb->sectors_per_block;
286                 fcb->fw2_sectors = fcb->fw1_sectors;
287                 pr_fcb_val(fcb, fw2_start_page);
288                 pr_fcb_val(fcb, fw2_sectors);
289         }
290
291         fcb->dbbt_search_area = 0;
292
293         bb_mark_bit_offs = calc_bb_offset(mtd, fcb);
294         if (bb_mark_bit_offs < 0)
295                 return ERR_PTR(bb_mark_bit_offs);
296         fcb->bb_mark_byte = bb_mark_bit_offs / 8;
297         fcb->bb_mark_startbit = bb_mark_bit_offs % 8;
298         fcb->bb_mark_phys_offset = mtd->writesize;
299
300         pr_fcb_val(fcb, bb_mark_byte);
301         pr_fcb_val(fcb, bb_mark_startbit);
302         pr_fcb_val(fcb, bb_mark_phys_offset);
303
304         fcb->checksum = calc_chksum(&fcb->fingerprint, 512 - 4);
305         return fcb;
306 }
307
308 static int find_fcb(void *ref, int page)
309 {
310         int ret = 0;
311         struct nand_chip *chip = mtd->priv;
312         void *buf = malloc(mtd->erasesize);
313
314         if (buf == NULL) {
315                 return -ENOMEM;
316         }
317         chip->select_chip(mtd, 0);
318         chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
319         ret = chip->ecc.read_page_raw(mtd, chip, buf, 1, page);
320         if (ret) {
321                 printf("Failed to read FCB from page %u: %d\n", page, ret);
322                 goto out;
323         }
324         if (memcmp(buf, ref, mtd->writesize) == 0) {
325                 debug("Found FCB in page %u (%08x)\n",
326                         page, page * mtd->writesize);
327                 ret = 1;
328         }
329 out:
330         chip->select_chip(mtd, -1);
331         free(buf);
332         return ret;
333 }
334
335 static int write_fcb(void *buf, int block)
336 {
337         int ret;
338         struct nand_chip *chip = mtd->priv;
339         int page = block * mtd->erasesize / mtd->writesize;
340
341         ret = find_fcb(buf, page);
342         if (ret > 0) {
343                 printf("FCB at block %d is up to date\n", block);
344                 return 0;
345         }
346
347         if (doit) {
348                 ret = nand_erase(mtd, block * mtd->erasesize, mtd->erasesize);
349                 if (ret) {
350                         printf("Failed to erase FCB block %u\n", block);
351                         return ret;
352                 }
353         }
354
355         printf("Writing FCB to block %d @ %08llx\n", block,
356                 (u64)block * mtd->erasesize);
357         if (doit) {
358                 chip->select_chip(mtd, 0);
359                 ret = chip->write_page(mtd, chip, 0, mtd->writesize,
360                                 buf, 1, page, 0, 1);
361                 if (ret) {
362                         printf("Failed to write FCB to block %u: %d\n", block, ret);
363                 }
364                 chip->select_chip(mtd, -1);
365         }
366         return ret;
367 }
368
369 #define chk_overlap(a,b)                                \
370         ((a##_start_block <= b##_end_block &&           \
371                 a##_end_block >= b##_start_block) ||    \
372         (b##_start_block <= a##_end_block &&            \
373                 b##_end_block >= a##_start_block))
374
375 #define fail_if_overlap(a,b,m1,m2) do {                                 \
376         if (!doit)                                                      \
377                 printf("check: %s[%lu..%lu] <> %s[%lu..%lu]\n",         \
378                         m1, a##_start_block, a##_end_block,             \
379                         m2, b##_start_block, b##_end_block);            \
380         if (a##_end_block < a##_start_block)                            \
381                 printf("Invalid start/end block # for %s\n", m1);       \
382         if (b##_end_block < b##_start_block)                            \
383                 printf("Invalid start/end block # for %s\n", m2);       \
384         if (chk_overlap(a, b)) {                                        \
385                 printf("%s blocks %lu..%lu overlap %s in blocks %lu..%lu!\n", \
386                         m1, a##_start_block, a##_end_block,             \
387                         m2, b##_start_block, b##_end_block);            \
388                 return -EINVAL;                                         \
389         }                                                               \
390 } while (0)
391
392 static int tx6_prog_uboot(void *addr, int start_block, int skip,
393                         size_t size, size_t max_len)
394 {
395         int ret;
396         nand_erase_options_t erase_opts = { 0, };
397         size_t actual;
398         size_t prg_length = max_len - skip * mtd->erasesize;
399         int prg_start = (start_block + skip) * mtd->erasesize;
400
401         erase_opts.offset = start_block * mtd->erasesize;
402         erase_opts.length = max_len;
403         erase_opts.quiet = 1;
404
405         printf("Erasing flash @ %08llx..%08llx\n", erase_opts.offset,
406                 erase_opts.offset + erase_opts.length - 1);
407         if (doit) {
408                 ret = nand_erase_opts(mtd, &erase_opts);
409                 if (ret) {
410                         printf("Failed to erase flash: %d\n", ret);
411                         return ret;
412                 }
413         }
414
415         printf("Programming flash @ %08x..%08x from %p\n",
416                 prg_start, prg_start + size - 1, addr);
417         if (doit) {
418                 actual = size;
419                 ret = nand_write_skip_bad(mtd, prg_start, &actual, NULL,
420                                         prg_length, addr, WITH_DROP_FFS);
421                 if (ret) {
422                         printf("Failed to program flash: %d\n", ret);
423                         return ret;
424                 }
425                 if (actual < size) {
426                         printf("Could only write %u of %u bytes\n", actual, size);
427                         return -EIO;
428                 }
429         }
430         return 0;
431 }
432
433 #ifdef CONFIG_ENV_IS_IN_NAND
434 #ifndef CONFIG_ENV_OFFSET_REDUND
435 #define TOTAL_ENV_SIZE CONFIG_ENV_RANGE
436 #else
437 #define TOTAL_ENV_SIZE (CONFIG_ENV_RANGE * 2)
438 #endif
439 #endif
440
441 int do_update(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
442 {
443         int ret;
444         const unsigned long fcb_start_block = 0, fcb_end_block = 0;
445         int erase_size = mtd->erasesize;
446         void *buf;
447         char *load_addr;
448         char *file_size;
449         size_t size = 0;
450         void *addr = NULL;
451         struct mx6_fcb *fcb;
452         unsigned long mtd_num_blocks = mtd->size / mtd->erasesize;
453 #ifdef CONFIG_ENV_IS_IN_NAND
454         unsigned long env_start_block = CONFIG_ENV_OFFSET / mtd->erasesize;
455         unsigned long env_end_block = env_start_block +
456                 DIV_ROUND_UP(TOTAL_ENV_SIZE, mtd->erasesize) - 1;
457 #endif
458         int optind;
459         int fw2_set = 0;
460         unsigned long fw1_start_block = 0, fw1_end_block;
461         unsigned long fw2_start_block = 0, fw2_end_block;
462         unsigned long fw_num_blocks;
463         int fw1_skip, fw2_skip;
464         unsigned long extra_blocks = 0;
465         size_t max_len1, max_len2;
466         struct mtd_device *dev;
467         struct part_info *part_info;
468         struct part_info *redund_part_info;
469         const char *uboot_part = "u-boot";
470         const char *redund_part = NULL;
471         u8 part_num;
472         u8 redund_part_num;
473
474         ret = mtdparts_init();
475         if (ret)
476                 return ret;
477
478         doit = true;
479         for (optind = 1; optind < argc; optind++) {
480                 char *endp;
481
482                 if (strcmp(argv[optind], "-f") == 0) {
483                         if (optind >= argc - 1) {
484                                 printf("Option %s requires an argument\n",
485                                         argv[optind]);
486                                 return -EINVAL;
487                         }
488                         optind++;
489                         fw1_start_block = simple_strtoul(argv[optind], &endp, 0);
490                         if (*endp != '\0') {
491                                 uboot_part = argv[optind];
492                                 continue;
493                         }
494                         uboot_part = NULL;
495                         if (fw1_start_block >= mtd_num_blocks) {
496                                 printf("Block number %lu is out of range: 0..%lu\n",
497                                         fw1_start_block, mtd_num_blocks - 1);
498                                 return -EINVAL;
499                         }
500                 } else if (strcmp(argv[optind], "-r") == 0) {
501                         fw2_set = 1;
502                         if (optind < argc - 1 && argv[optind + 1][0] != '-') {
503                                 optind++;
504                                 fw2_start_block = simple_strtoul(argv[optind],
505                                                                 &endp, 0);
506                                 if (*endp != '\0') {
507                                         redund_part = argv[optind];
508                                         continue;
509                                 }
510                                 if (fw2_start_block >= mtd_num_blocks) {
511                                         printf("Block number %lu is out of range: 0..%lu\n",
512                                                 fw2_start_block,
513                                                 mtd_num_blocks - 1);
514                                         return -EINVAL;
515                                 }
516                         }
517                 } else if (strcmp(argv[optind], "-e") == 0) {
518                         if (optind >= argc - 1) {
519                                 printf("Option %s requires an argument\n",
520                                         argv[optind]);
521                                 return -EINVAL;
522                         }
523                         optind++;
524                         extra_blocks = simple_strtoul(argv[optind], NULL, 0);
525                         if (extra_blocks >= mtd_num_blocks) {
526                                 printf("Extra block count %lu is out of range: 0..%lu\n",
527                                         extra_blocks,
528                                         mtd_num_blocks - 1);
529                                 return -EINVAL;
530                         }
531                 } else if (strcmp(argv[optind], "-n") == 0) {
532                         doit = false;
533                 } else if (argv[optind][0] == '-') {
534                         printf("Unrecognized option %s\n", argv[optind]);
535                         return -EINVAL;
536                 } else {
537                         break;
538                 }
539         }
540
541         load_addr = getenv("fileaddr");
542         file_size = getenv("filesize");
543
544         if (argc - optind < 1 && load_addr == NULL) {
545                 printf("Load address not specified\n");
546                 return -EINVAL;
547         }
548         if (argc - optind < 2 && file_size == NULL) {
549                 if (uboot_part) {
550                         printf("WARNING: Image size not specified; overwriting whole '%s' partition\n",
551                                 uboot_part);
552                         printf("This will only work, if there are no bad blocks inside this partition!\n");
553                 } else {
554                         printf("ERROR: Image size must be specified\n");
555                         return -EINVAL;
556                 }
557         }
558         if (argc > optind) {
559                 load_addr = NULL;
560                 addr = (void *)simple_strtoul(argv[optind], NULL, 16);
561                 optind++;
562         }
563         if (argc > optind) {
564                 file_size = NULL;
565                 size = simple_strtoul(argv[optind], NULL, 16);
566                 optind++;
567         }
568         if (load_addr != NULL) {
569                 addr = (void *)simple_strtoul(load_addr, NULL, 16);
570                 printf("Using default load address %p\n", addr);
571         }
572         if (file_size != NULL) {
573                 size = simple_strtoul(file_size, NULL, 16);
574                 printf("Using default file size %08x\n", size);
575         }
576         if (size > 0)
577                 fw_num_blocks = DIV_ROUND_UP(size, mtd->erasesize);
578         else
579                 fw_num_blocks = 0;
580
581         if (uboot_part) {
582                 ret = find_dev_and_part(uboot_part, &dev, &part_num,
583                                         &part_info);
584                 if (ret) {
585                         printf("Failed to find '%s' partition: %d\n",
586                                 uboot_part, ret);
587                         return ret;
588                 }
589                 fw1_start_block = part_info->offset / mtd->erasesize;
590                 max_len1 = part_info->size;
591                 if (size == 0)
592                         fw_num_blocks = max_len1 / mtd->erasesize;
593         } else {
594                 max_len1 = (fw_num_blocks + extra_blocks) * mtd->erasesize;
595         }
596
597         if (redund_part) {
598                 ret = find_dev_and_part(redund_part, &dev, &redund_part_num,
599                                         &redund_part_info);
600                 if (ret) {
601                         printf("Failed to find '%s' partition: %d\n",
602                                 redund_part, ret);
603                         return ret;
604                 }
605                 fw2_start_block = redund_part_info->offset / mtd->erasesize;
606                 max_len2 = redund_part_info->size;
607                 if (fw2_start_block == fcb_start_block) {
608                         fw2_start_block++;
609                         max_len2 -= mtd->erasesize;
610                 }
611                 if (size == 0)
612                         fw_num_blocks = max_len2 / mtd->erasesize;
613         } else if (fw2_set) {
614                 max_len2 = (fw_num_blocks + extra_blocks) * mtd->erasesize;
615         } else {
616                 max_len2 = 0;
617         }
618
619         fw1_skip = find_contig_space(fw1_start_block, fw_num_blocks,
620                                 max_len1 / mtd->erasesize);
621         if (fw1_skip < 0) {
622                 printf("Could not find %lu contiguous good blocks for fw image in blocks %lu..%lu\n",
623                         fw_num_blocks, fw1_start_block,
624                         fw1_start_block + max_len1 / mtd->erasesize - 1);
625                 if (uboot_part) {
626 #ifdef CONFIG_ENV_IS_IN_NAND
627                         if (part_info->offset <= CONFIG_ENV_OFFSET + TOTAL_ENV_SIZE) {
628                                 printf("Use a different partition\n");
629                         } else {
630                                 printf("Increase the size of the '%s' partition\n",
631                                         uboot_part);
632                         }
633 #else
634                         printf("Increase the size of the '%s' partition\n",
635                                 uboot_part);
636 #endif
637                 } else {
638                         printf("Increase the number of spare blocks to use with the '-e' option\n");
639                 }
640                 return -ENOSPC;
641         }
642         if (extra_blocks)
643                 fw1_end_block = fw1_start_block + fw_num_blocks + extra_blocks - 1;
644         else
645                 fw1_end_block = fw1_start_block + fw_num_blocks + fw1_skip - 1;
646
647         if (fw2_set && fw2_start_block == 0)
648                 fw2_start_block = fw1_end_block + 1;
649         if (fw2_start_block > 0) {
650                 fw2_skip = find_contig_space(fw2_start_block, fw_num_blocks,
651                                         max_len2 / mtd->erasesize);
652                 if (fw2_skip < 0) {
653                         printf("Could not find %lu contiguous good blocks for redundant fw image in blocks %lu..%lu\n",
654                                 fw_num_blocks, fw2_start_block,
655                                 fw2_start_block + max_len2 / mtd->erasesize - 1);
656                         if (redund_part) {
657                                 printf("Increase the size of the '%s' partition or use a different partition\n",
658                                         redund_part);
659                         } else {
660                                 printf("Increase the number of spare blocks to use with the '-e' option\n");
661                         }
662                         return -ENOSPC;
663                 }
664         } else {
665                 fw2_skip = 0;
666         }
667         if (extra_blocks)
668                 fw2_end_block = fw2_start_block + fw_num_blocks + extra_blocks - 1;
669         else
670                 fw2_end_block = fw2_start_block + fw_num_blocks + fw2_skip - 1;
671
672 #ifdef CONFIG_ENV_IS_IN_NAND
673         fail_if_overlap(fcb, env, "FCB", "Environment");
674         fail_if_overlap(fw1, env, "FW1", "Environment");
675 #endif
676         fail_if_overlap(fcb, fw1, "FCB", "FW1");
677         if (fw2_set) {
678                 fail_if_overlap(fcb, fw2, "FCB", "FW2");
679 #ifdef CONFIG_ENV_IS_IN_NAND
680                 fail_if_overlap(fw2, env, "FW2", "Environment");
681 #endif
682                 fail_if_overlap(fw1, fw2, "FW1", "FW2");
683         }
684         fw1_start_block += fw1_skip;
685         fw2_start_block += fw2_skip;
686
687         buf = memalign(SZ_128K, erase_size);
688         if (buf == NULL) {
689                 printf("Failed to allocate buffer\n");
690                 return -ENOMEM;
691         }
692
693         fcb = create_fcb(buf, fw1_start_block,
694                         fw2_start_block, fw_num_blocks);
695         if (IS_ERR(fcb)) {
696                 printf("Failed to initialize FCB: %ld\n", PTR_ERR(fcb));
697                 ret = PTR_ERR(fcb);
698                 goto out;
699         }
700         encode_hamming_13_8(fcb, (void *)fcb + 512, 512);
701
702         ret = write_fcb(buf, fcb_start_block);
703         if (ret) {
704                 printf("Failed to write FCB to block %lu\n", fcb_start_block);
705                 return ret;
706         }
707
708         printf("Programming U-Boot image from %p to block %lu @ %08llx\n",
709                 buf, fw1_start_block, (u64)fw1_start_block * mtd->erasesize);
710         ret = tx6_prog_uboot(addr, fw1_start_block, fw1_skip, size,
711                         max_len1);
712
713         if (ret || fw2_start_block == 0)
714                 goto out;
715
716         printf("Programming redundant U-Boot image to block %lu @ %08llx\n",
717                 fw2_start_block, (u64)fw2_start_block * mtd->erasesize);
718         ret = tx6_prog_uboot(addr, fw2_start_block, fw2_skip, size,
719                         max_len2);
720 out:
721         free(buf);
722         return ret;
723 }
724
725 U_BOOT_CMD(romupdate, 11, 0, do_update,
726         "Creates an FCB data structure and writes an U-Boot image to flash",
727         "[-f {<part>|block#}] [-r [{<part>|block#}]] [-e #] [<address>] [<length>]\n"
728         "\t-f <part>\twrite bootloader image to partition <part>\n"
729         "\t-f #\t\twrite bootloader image at block # (decimal)\n"
730         "\t-r\t\twrite redundant bootloader image at next free block after first image\n"
731         "\t-r <part>\twrite redundant bootloader image to partition <part>\n"
732         "\t-r #\t\twrite redundant bootloader image at block # (decimal)\n"
733         "\t-e #\t\tspecify number of redundant blocks per boot loader image\n"
734         "\t\t\t(only valid if -f or -r specify a flash address rather than a partition name)\n"
735         "\t-n\t\tshow what would be done without actually updating the flash\n"
736         "\t<address>\tRAM address of bootloader image (default: ${fileaddr})\n"
737         "\t<length>\tlength of bootloader image in RAM (default: ${filesize})"
738         );