Newer
Older
debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
mtd_id_len, mtd_id, mtd_id_len);
list_for_each(entry, &mtdids) {
id = list_entry(entry, struct mtdids, link);
debug("entry: '%s' (len = %d)\n",
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
id->mtd_id, strlen(id->mtd_id));
if (mtd_id_len != strlen(id->mtd_id))
continue;
if (strncmp(id->mtd_id, mtd_id, mtd_id_len) == 0)
return id;
}
return NULL;
}
/**
* Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
* return device type and number.
*
* @param id string describing device id
* @param ret_id output pointer to next char after parse completes (output)
* @param dev_type parsed device type (output)
* @param dev_num parsed device number (output)
* @return 0 on success, 1 otherwise
*/
int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type,
u8 *dev_num)
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
{
const char *p = id;
*dev_type = 0;
if (strncmp(p, "nand", 4) == 0) {
*dev_type = MTD_DEV_TYPE_NAND;
p += 4;
} else if (strncmp(p, "nor", 3) == 0) {
*dev_type = MTD_DEV_TYPE_NOR;
p += 3;
} else if (strncmp(p, "onenand", 7) == 0) {
*dev_type = MTD_DEV_TYPE_ONENAND;
p += 7;
} else {
printf("incorrect device type in %s\n", id);
return 1;
}
if (!isdigit(*p)) {
printf("incorrect device number in %s\n", id);
return 1;
}
*dev_num = simple_strtoul(p, (char **)&p, 0);
if (ret_id)
*ret_id = p;
return 0;
}
/**
* Process all devices and generate corresponding mtdparts string describing
* all partitions on all devices.
*
* @param buf output buffer holding generated mtdparts string (output)
* @param buflen buffer size
* @return 0 on success, 1 otherwise
*/
static int generate_mtdparts(char *buf, u32 buflen)
{
struct list_head *pentry, *dentry;
struct mtd_device *dev;
struct part_info *part, *prev_part;
char *p = buf;
char tmpbuf[32];
u32 size, offset, len, part_cnt;
u32 maxlen = buflen - 1;
debug("--- generate_mtdparts ---\n");
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
if (list_empty(&devices)) {
buf[0] = '\0';
return 0;
}
sprintf(p, "mtdparts=");
p += 9;
list_for_each(dentry, &devices) {
dev = list_entry(dentry, struct mtd_device, link);
/* copy mtd_id */
len = strlen(dev->id->mtd_id) + 1;
if (len > maxlen)
goto cleanup;
memcpy(p, dev->id->mtd_id, len - 1);
p += len - 1;
*(p++) = ':';
maxlen -= len;
/* format partitions */
prev_part = NULL;
part_cnt = 0;
list_for_each(pentry, &dev->parts) {
part = list_entry(pentry, struct part_info, link);
size = part->size;
offset = part->offset;
part_cnt++;
/* partition size */
memsize_format(tmpbuf, size);
len = strlen(tmpbuf);
if (len > maxlen)
goto cleanup;
memcpy(p, tmpbuf, len);
p += len;
maxlen -= len;
/* add offset only when there is a gap between
* partitions */
if ((!prev_part && (offset != 0)) ||
(prev_part && ((prev_part->offset + prev_part->size) != part->offset))) {
memsize_format(tmpbuf, offset);
len = strlen(tmpbuf) + 1;
if (len > maxlen)
goto cleanup;
*(p++) = '@';
memcpy(p, tmpbuf, len - 1);
p += len - 1;
maxlen -= len;
}
/* copy name only if user supplied */
if(!part->auto_name) {
len = strlen(part->name) + 2;
if (len > maxlen)
goto cleanup;
*(p++) = '(';
memcpy(p, part->name, len - 2);
p += len - 2;
*(p++) = ')';
maxlen -= len;
}
/* ro mask flag */
if (part->mask_flags && MTD_WRITEABLE_CMD) {
len = 2;
if (len > maxlen)
goto cleanup;
*(p++) = 'r';
*(p++) = 'o';
maxlen -= 2;
}
/* print ',' separator if there are other partitions
* following */
if (dev->num_parts > part_cnt) {
if (1 > maxlen)
goto cleanup;
*(p++) = ',';
maxlen--;
}
prev_part = part;
}
/* print ';' separator if there are other devices following */
if (dentry->next != &devices) {
if (1 > maxlen)
goto cleanup;
*(p++) = ';';
maxlen--;
}
}
/* we still have at least one char left, as we decremented maxlen at
* the begining */
*p = '\0';
return 0;
cleanup:
last_parts[0] = '\0';
return 1;
}
/**
* Call generate_mtdparts to process all devices and generate corresponding
* mtdparts string, save it in mtdparts environment variable.
*
* @param buf output buffer holding generated mtdparts string (output)
* @param buflen buffer size
* @return 0 on success, 1 otherwise
*/
static int generate_mtdparts_save(char *buf, u32 buflen)
{
int ret;
ret = generate_mtdparts(buf, buflen);
if ((buf[0] != '\0') && (ret == 0))
setenv("mtdparts", buf);
else
setenv("mtdparts", NULL);
return ret;
}
#if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
* Get the net size (w/o bad blocks) of the given partition.
*
* @param mtd the mtd info
* @param part the partition
* @return the calculated net size of this partition
static uint64_t net_part_size(struct mtd_info *mtd, struct part_info *part)
{
uint64_t i, net_size = 0;
if (!mtd->block_isbad)
return part->size;
for (i = 0; i < part->size; i += mtd->erasesize) {
if (!mtd->block_isbad(mtd, part->offset + i))
net_size += mtd->erasesize;
}
return net_size;
}
#endif
static void print_partition_table(void)
{
struct list_head *dentry, *pentry;
struct part_info *part;
struct mtd_device *dev;
int part_num;
list_for_each(dentry, &devices) {
dev = list_entry(dentry, struct mtd_device, link);
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
/* list partitions for given device */
part_num = 0;
#if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
struct mtd_info *mtd;
if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
return;
printf("\ndevice %s%d <%s>, # parts = %d\n",
MTD_DEV_TYPE(dev->id->type), dev->id->num,
dev->id->mtd_id, dev->num_parts);
printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
list_for_each(pentry, &dev->parts) {
u32 net_size;
char *size_note;
part = list_entry(pentry, struct part_info, link);
net_size = net_part_size(mtd, part);
size_note = part->size == net_size ? " " : " (!)";
printf("%2d: %-20s0x%08x\t0x%08x%s\t0x%08x\t%d\n",
part_num, part->name, part->size,
net_size, size_note, part->offset,
part->mask_flags);
#else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
printf("\ndevice %s%d <%s>, # parts = %d\n",
MTD_DEV_TYPE(dev->id->type), dev->id->num,
dev->id->mtd_id, dev->num_parts);
printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
list_for_each(pentry, &dev->parts) {
part = list_entry(pentry, struct part_info, link);
printf("%2d: %-20s0x%08x\t0x%08x\t%d\n",
part_num, part->name, part->size,
part->offset, part->mask_flags);
#endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
if (list_empty(&devices))
printf("no partitions defined\n");
}
/**
* Format and print out a partition list for each device from global device
* list.
*/
static void list_partitions(void)
{
struct part_info *part;
debug("\n---list_partitions---\n");
print_partition_table();
/* current_mtd_dev is not NULL only when we have non empty device list */
if (current_mtd_dev) {
part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
if (part) {
printf("\nactive partition: %s%d,%d - (%s) 0x%08x @ 0x%08x\n",
MTD_DEV_TYPE(current_mtd_dev->id->type),
current_mtd_dev->id->num, current_mtd_partnum,
part->name, part->size, part->offset);
} else {
printf("could not get current partition info\n\n");
}
}
printf("\ndefaults:\n");
printf("mtdids : %s\n",
mtdids_default ? mtdids_default : "none");
/*
* Using printf() here results in printbuffer overflow
* if default mtdparts string is greater than console
* printbuffer. Use puts() to prevent system crashes.
*/
puts("mtdparts: ");
puts(mtdparts_default ? mtdparts_default : "none");
puts("\n");
}
/**
* Given partition identifier in form of <dev_type><dev_num>,<part_num> find
* corresponding device and verify partition number.
*
* @param id string describing device and partition or partition name
* @param dev pointer to the requested device (output)
* @param part_num verified partition number (output)
* @param part pointer to requested partition (output)
* @return 0 on success, 1 otherwise
*/
int find_dev_and_part(const char *id, struct mtd_device **dev,
u8 *part_num, struct part_info **part)
{
struct list_head *dentry, *pentry;
u8 type, dnum, pnum;
const char *p;
debug("--- find_dev_and_part ---\nid = %s\n", id);
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
list_for_each(dentry, &devices) {
*part_num = 0;
*dev = list_entry(dentry, struct mtd_device, link);
list_for_each(pentry, &(*dev)->parts) {
*part = list_entry(pentry, struct part_info, link);
if (strcmp((*part)->name, id) == 0)
return 0;
(*part_num)++;
}
}
p = id;
*dev = NULL;
*part = NULL;
*part_num = 0;
if (mtd_id_parse(p, &p, &type, &dnum) != 0)
return 1;
if ((*p++ != ',') || (*p == '\0')) {
printf("no partition number specified\n");
return 1;
}
pnum = simple_strtoul(p, (char **)&p, 0);
if (*p != '\0') {
printf("unexpected trailing character '%c'\n", *p);
return 1;
}
if ((*dev = device_find(type, dnum)) == NULL) {
printf("no such device %s%d\n", MTD_DEV_TYPE(type), dnum);
return 1;
}
if ((*part = mtd_part_info(*dev, pnum)) == NULL) {
printf("no such partition\n");
*dev = NULL;
return 1;
}
*part_num = pnum;
return 0;
}
/**
* Find and delete partition. For partition id format see find_dev_and_part().
*
* @param id string describing device and partition
* @return 0 on success, 1 otherwise
*/
static int delete_partition(const char *id)
{
u8 pnum;
struct mtd_device *dev;
struct part_info *part;
if (find_dev_and_part(id, &dev, &pnum, &part) == 0) {
debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08x@0x%08x\n",
MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum,
part->name, part->size, part->offset);
if (part_del(dev, part) != 0)
return 1;
if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
printf("generated mtdparts too long, resetting to null\n");
return 1;
}
return 0;
}
printf("partition %s not found\n", id);
return 1;
}
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
/**
* Increase the size of the given partition so that it's net size is at least
* as large as the size member and such that the next partition would start on a
* good block if it were adjacent to this partition.
*
* @param mtd the mtd device
* @param part the partition
* @param next_offset pointer to the offset of the next partition after this
* partition's size has been modified (output)
*/
static void spread_partition(struct mtd_info *mtd, struct part_info *part,
uint64_t *next_offset)
{
uint64_t net_size, padding_size = 0;
int truncated;
mtd_get_len_incl_bad(mtd, part->offset, part->size, &net_size,
&truncated);
/*
* Absorb bad blocks immediately following this
* partition also into the partition, such that
* the next partition starts with a good block.
*/
if (!truncated) {
mtd_get_len_incl_bad(mtd, part->offset + net_size,
mtd->erasesize, &padding_size, &truncated);
if (truncated)
padding_size = 0;
else
padding_size -= mtd->erasesize;
}
if (truncated) {
printf("truncated partition %s to %lld bytes\n", part->name,
(uint64_t) net_size + padding_size);
}
part->size = net_size + padding_size;
*next_offset = part->offset + part->size;
}
/**
* Adjust all of the partition sizes, such that all partitions are at least
* as big as their mtdparts environment variable sizes and they each start
* on a good block.
*
* @return 0 on success, 1 otherwise
*/
static int spread_partitions(void)
{
struct list_head *dentry, *pentry;
struct mtd_device *dev;
struct part_info *part;
struct mtd_info *mtd;
int part_num;
uint64_t cur_offs;
list_for_each(dentry, &devices) {
dev = list_entry(dentry, struct mtd_device, link);
if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
return 1;
part_num = 0;
cur_offs = 0;
list_for_each(pentry, &dev->parts) {
part = list_entry(pentry, struct part_info, link);
debug("spread_partitions: device = %s%d, partition %d ="
" (%s) 0x%08x@0x%08x\n",
MTD_DEV_TYPE(dev->id->type), dev->id->num,
part_num, part->name, part->size,
part->offset);
if (cur_offs > part->offset)
part->offset = cur_offs;
spread_partition(mtd, part, &cur_offs);
part_num++;
}
}
index_partitions();
if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
printf("generated mtdparts too long, resetting to null\n");
return 1;
}
return 0;
}
#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
/**
* Accept character string describing mtd partitions and call device_parse()
* for each entry. Add created devices to the global devices list.
*
* @param mtdparts string specifing mtd partitions
* @return 0 on success, 1 otherwise
*/
static int parse_mtdparts(const char *const mtdparts)
{
const char *p = mtdparts;
struct mtd_device *dev;
int err = 1;
char tmp_parts[MTDPARTS_MAXLEN];
debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", p);
/* delete all devices and partitions */
if (mtd_devices_init() != 0) {
printf("could not initialise device list\n");
return err;
}
/* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
if (gd->flags & GD_FLG_ENV_READY) {
p = getenv("mtdparts");
} else {
p = tmp_parts;
getenv_f("mtdparts", tmp_parts, MTDPARTS_MAXLEN);
}
if (strncmp(p, "mtdparts=", 9) != 0) {
printf("mtdparts variable doesn't start with 'mtdparts='\n");
return err;
}
p += 9;
while (p && (*p != '\0')) {
err = 1;
if ((device_parse(p, &p, &dev) != 0) || (!dev))
break;
debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
dev->id->num, dev->id->mtd_id);
/* check if parsed device is already on the list */
if (device_find(dev->id->type, dev->id->num) != NULL) {
printf("device %s%d redefined, please correct mtdparts variable\n",
MTD_DEV_TYPE(dev->id->type), dev->id->num);
break;
}
list_add_tail(&dev->link, &devices);
err = 0;
}
if (err == 1) {
device_delall(&devices);
return 1;
}
return 0;
}
/**
* Parse provided string describing mtdids mapping (see file header for mtdids
* variable format). Allocate memory for each entry and add all found entries
* to the global mtdids list.
*
* @param ids mapping string
* @return 0 on success, 1 otherwise
*/
static int parse_mtdids(const char *const ids)
{
const char *p = ids;
const char *mtd_id;
int mtd_id_len;
struct mtdids *id;
struct list_head *entry, *n;
struct mtdids *id_tmp;
u8 type, num;
u32 size;
int ret = 1;
debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids);
/* clean global mtdids list */
list_for_each_safe(entry, n, &mtdids) {
id_tmp = list_entry(entry, struct mtdids, link);
debug("mtdids del: %d %d\n", id_tmp->type, id_tmp->num);
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
list_del(entry);
free(id_tmp);
}
last_ids[0] = '\0';
INIT_LIST_HEAD(&mtdids);
while(p && (*p != '\0')) {
ret = 1;
/* parse 'nor'|'nand'|'onenand'<dev-num> */
if (mtd_id_parse(p, &p, &type, &num) != 0)
break;
if (*p != '=') {
printf("mtdids: incorrect <dev-num>\n");
break;
}
p++;
/* check if requested device exists */
if (mtd_device_validate(type, num, &size) != 0)
return 1;
/* locate <mtd-id> */
mtd_id = p;
if ((p = strchr(mtd_id, ',')) != NULL) {
mtd_id_len = p - mtd_id + 1;
p++;
} else {
mtd_id_len = strlen(mtd_id) + 1;
}
if (mtd_id_len == 0) {
printf("mtdids: no <mtd-id> identifier\n");
break;
}
/* check if this id is already on the list */
int double_entry = 0;
list_for_each(entry, &mtdids) {
id_tmp = list_entry(entry, struct mtdids, link);
if ((id_tmp->type == type) && (id_tmp->num == num)) {
double_entry = 1;
break;
}
}
if (double_entry) {
printf("device id %s%d redefined, please correct mtdids variable\n",
MTD_DEV_TYPE(type), num);
break;
}
/* allocate mtdids structure */
if (!(id = (struct mtdids *)malloc(sizeof(struct mtdids) + mtd_id_len))) {
printf("out of memory\n");
break;
}
memset(id, 0, sizeof(struct mtdids) + mtd_id_len);
id->num = num;
id->type = type;
id->size = size;
id->mtd_id = (char *)(id + 1);
strncpy(id->mtd_id, mtd_id, mtd_id_len - 1);
id->mtd_id[mtd_id_len - 1] = '\0';
INIT_LIST_HEAD(&id->link);
debug("+ id %s%d\t%16d bytes\t%s\n",
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
MTD_DEV_TYPE(id->type), id->num,
id->size, id->mtd_id);
list_add_tail(&id->link, &mtdids);
ret = 0;
}
if (ret == 1) {
/* clean mtdids list and free allocated memory */
list_for_each_safe(entry, n, &mtdids) {
id_tmp = list_entry(entry, struct mtdids, link);
list_del(entry);
free(id_tmp);
}
return 1;
}
return 0;
}
/**
* Parse and initialize global mtdids mapping and create global
* device/partition list.
*
* @return 0 on success, 1 otherwise
*/
int mtdparts_init(void)
{
static int initialized = 0;
const char *ids, *parts;
const char *current_partition;
int ids_changed;
char tmp_ep[PARTITION_MAXLEN];
char tmp_parts[MTDPARTS_MAXLEN];
debug("\n---mtdparts_init---\n");
if (!initialized) {
INIT_LIST_HEAD(&mtdids);
INIT_LIST_HEAD(&devices);
memset(last_ids, 0, MTDIDS_MAXLEN);
memset(last_parts, 0, MTDPARTS_MAXLEN);
memset(last_partition, 0, PARTITION_MAXLEN);
initialized = 1;
}
/* get variables */
ids = getenv("mtdids");
/*
* The mtdparts variable tends to be long. If we need to access it
* before the env is relocated, then we need to use our own stack
* buffer. gd->env_buf will be too small.
*/
if (gd->flags & GD_FLG_ENV_READY) {
parts = getenv("mtdparts");
} else {
parts = tmp_parts;
getenv_f("mtdparts", tmp_parts, MTDPARTS_MAXLEN);
}
current_partition = getenv("partition");
/* save it for later parsing, cannot rely on current partition pointer
* as 'partition' variable may be updated during init */
tmp_ep[0] = '\0';
if (current_partition)
strncpy(tmp_ep, current_partition, PARTITION_MAXLEN);
debug("last_ids : %s\n", last_ids);
debug("env_ids : %s\n", ids);
debug("last_parts: %s\n", last_parts);
debug("env_parts : %s\n\n", parts);
debug("last_partition : %s\n", last_partition);
debug("env_partition : %s\n", current_partition);
/* if mtdids varible is empty try to use defaults */
if (!ids) {
if (mtdids_default) {
debug("mtdids variable not defined, using default\n");
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
ids = mtdids_default;
setenv("mtdids", (char *)ids);
} else {
printf("mtdids not defined, no default present\n");
return 1;
}
}
if (strlen(ids) > MTDIDS_MAXLEN - 1) {
printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN);
return 1;
}
/* do no try to use defaults when mtdparts variable is not defined,
* just check the length */
if (!parts)
printf("mtdparts variable not set, see 'help mtdparts'\n");
if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) {
printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN);
return 1;
}
/* check if we have already parsed those mtdids */
if ((last_ids[0] != '\0') && (strcmp(last_ids, ids) == 0)) {
ids_changed = 0;
} else {
ids_changed = 1;
if (parse_mtdids(ids) != 0) {
mtd_devices_init();
return 1;
}
/* ok it's good, save new ids */
strncpy(last_ids, ids, MTDIDS_MAXLEN);
}
/* parse partitions if either mtdparts or mtdids were updated */
if (parts && ((last_parts[0] == '\0') || ((strcmp(last_parts, parts) != 0)) || ids_changed)) {
if (parse_mtdparts(parts) != 0)
return 1;
if (list_empty(&devices)) {
printf("mtdparts_init: no valid partitions\n");
return 1;
}
/* ok it's good, save new parts */
strncpy(last_parts, parts, MTDPARTS_MAXLEN);
/* reset first partition from first dev from the list as current */
current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
current_mtd_partnum = 0;
debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
MTD_DEV_TYPE(current_mtd_dev->id->type),
current_mtd_dev->id->num, current_mtd_partnum);
}
/* mtdparts variable was reset to NULL, delete all devices/partitions */
if (!parts && (last_parts[0] != '\0'))
return mtd_devices_init();
/* do not process current partition if mtdparts variable is null */
if (!parts)
return 0;
/* is current partition set in environment? if so, use it */
if ((tmp_ep[0] != '\0') && (strcmp(tmp_ep, last_partition) != 0)) {
struct part_info *p;
struct mtd_device *cdev;
u8 pnum;
debug("--- getting current partition: %s\n", tmp_ep);
if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) {
current_mtd_dev = cdev;
current_mtd_partnum = pnum;
current_save();
}
} else if (getenv("partition") == NULL) {
debug("no partition variable set, setting...\n");
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
current_save();
}
return 0;
}
/**
* Return pointer to the partition of a requested number from a requested
* device.
*
* @param dev device that is to be searched for a partition
* @param part_num requested partition number
* @return pointer to the part_info, NULL otherwise
*/
static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num)
{
struct list_head *entry;
struct part_info *part;
int num;
if (!dev)
return NULL;
debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
part_num, MTD_DEV_TYPE(dev->id->type),
dev->id->num, dev->id->mtd_id);
if (part_num >= dev->num_parts) {
printf("invalid partition number %d for device %s%d (%s)\n",
part_num, MTD_DEV_TYPE(dev->id->type),
dev->id->num, dev->id->mtd_id);
return NULL;
}
/* locate partition number, return it */
num = 0;
list_for_each(entry, &dev->parts) {
part = list_entry(entry, struct part_info, link);
if (part_num == num++) {
return part;
}
}
return NULL;
}
/***************************************************/
/* U-boot commands */
/***************************************************/
/* command line only */
/**
* Routine implementing u-boot chpart command. Sets new current partition based
* on the user supplied partition id. For partition id format see find_dev_and_part().
*
* @param cmdtp command internal data
* @param flag command flag
* @param argc number of arguments supplied to the command
* @param argv arguments list
* @return 0 on success, 1 otherwise
*/
static int do_chpart(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
/* command line only */
struct mtd_device *dev;
struct part_info *part;
u8 pnum;
if (mtdparts_init() !=0)
return 1;
if (argc < 2) {
printf("no partition id specified\n");
return 1;
}
if (find_dev_and_part(argv[1], &dev, &pnum, &part) != 0)
return 1;
current_mtd_dev = dev;
current_mtd_partnum = pnum;
current_save();
printf("partition changed to %s%d,%d\n",
MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum);
return 0;
}
/**
* Routine implementing u-boot mtdparts command. Initialize/update default global
* partition list and process user partition request (list, add, del).
*
* @param cmdtp command internal data
* @param flag command flag
* @param argc number of arguments supplied to the command
* @param argv arguments list
* @return 0 on success, 1 otherwise
*/
static int do_mtdparts(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
{
if (argc == 2) {
if (strcmp(argv[1], "default") == 0) {
setenv("mtdids", (char *)mtdids_default);
setenv("mtdparts", (char *)mtdparts_default);
setenv("partition", NULL);
mtdparts_init();
return 0;
} else if (strcmp(argv[1], "delall") == 0) {
/* this may be the first run, initialize lists if needed */
mtdparts_init();
setenv("mtdparts", NULL);
/* mtd_devices_init() calls current_save() */
return mtd_devices_init();
}
}
/* make sure we are in sync with env variables */
if (mtdparts_init() != 0)
return 1;
if (argc == 1) {
list_partitions();
return 0;
}
/* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
if (((argc == 5) || (argc == 6)) && (strncmp(argv[1], "add", 3) == 0)) {
#define PART_ADD_DESC_MAXLEN 64
char tmpbuf[PART_ADD_DESC_MAXLEN];
#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
struct mtd_info *mtd;
uint64_t next_offset;
#endif
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
u8 type, num, len;
struct mtd_device *dev;
struct mtd_device *dev_tmp;
struct mtdids *id;
struct part_info *p;
if (mtd_id_parse(argv[2], NULL, &type, &num) != 0)
return 1;
if ((id = id_find(type, num)) == NULL) {
printf("no such device %s defined in mtdids variable\n", argv[2]);
return 1;
}
len = strlen(id->mtd_id) + 1; /* 'mtd_id:' */
len += strlen(argv[3]); /* size@offset */
len += strlen(argv[4]) + 2; /* '(' name ')' */
if (argv[5] && (strlen(argv[5]) == 2))
len += 2; /* 'ro' */
if (len >= PART_ADD_DESC_MAXLEN) {
printf("too long partition description\n");
return 1;
}
sprintf(tmpbuf, "%s:%s(%s)%s",
id->mtd_id, argv[3], argv[4], argv[5] ? argv[5] : "");
debug("add tmpbuf: %s\n", tmpbuf);
if ((device_parse(tmpbuf, NULL, &dev) != 0) || (!dev))
return 1;
debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
dev->id->num, dev->id->mtd_id);
p = list_entry(dev->parts.next, struct part_info, link);