14  *   Added support for reading flash partition table from environment.
30  * 'partition' - keeps current partition identifier
32  * partition  := <part-id>
46  * 'mtdparts' - partition list
54  * <offset>   := partition start offset within the device
56  * <ro-flag>  := when set to 'ro' makes partition read-only (not used, passed to kernel)
64  * 1 NOR Flash, with 1 single writable partition:
95 /* special size referring to all the remaining space in a partition */
104 /* minimum partition size */
132 /* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
146 /* device/partition list, parse_cmdline() parses into here */
149 /* current active device and partition number */
227  * current partition is saved in 'mtddevnum'. Current partition name in
271  * Save current device and partition in environment variable 'partition'.
283 		env_set("partition", buf);  in current_save()
286 		debug("=> partition %s\n", buf);  in current_save()
288 		env_set("partition", NULL);  in current_save()
291 		debug("=> partition NULL\n");  in current_save()
321  * Performs sanity check for supplied flash partition.
322  * Table of existing MTD flash devices is searched and partition device
326  * @param part partition to validate
327  * @return 0 if partition is valid, 1 otherwise
348 			printf("%s%d: partition (%s) start offset"  in part_validate_eraseblock()
356 			printf("%s%d: partition (%s) size alignment incorrect\n",  in part_validate_eraseblock()
376 		printf("%s%d: partition (%s) start offset alignment incorrect\n",  in part_validate_eraseblock()
395 		printf("%s%d: partition (%s) size alignment incorrect\n",  in part_validate_eraseblock()
408  * Performs sanity check for supplied partition. Offset and size are
409  * verified to be within valid range. Partition type is checked and
413  * @param part partition to validate
414  * @return 0 if partition is valid, 1 otherwise
428 		printf("%s%d: partition (%s) size too big\n",  in part_validate()
439 	 * Now we need to check if the partition starts and ends on  in part_validate()
446  * Delete selected partition from the partition list of the specified device.
448  * @param dev device to delete partition from
449  * @param part partition to delete
456 	/* if there is only one partition, remove whole device */  in part_del()
460 	/* otherwise just delete this partition */  in part_del()
470 				printf("current partition deleted, resetting current to 0\n");  in part_del()
511  * Add new partition to the supplied partition list. Make sure partitions are
514  * @param head list this partition is to be added to
515  * @param new partition to be added
522 	/* link partition to parrent dev */  in part_sort_add()
535 	/* get current partition info if we are updating current device */  in part_sort_add()
545 		/* be compliant with kernel cmdline, allow only one partition at offset zero */  in part_sort_add()
547 			printf("cannot add second partition at offset 0\n");  in part_sort_add()
574  * Add provided partition to the partition list of a given device.
576  * @param dev device to which partition is added
577  * @param part partition to be added
586 	/* partition is ok, add it to the list */  in part_add()
594  * Parse one partition definition, allocate memory and return pointer to this
597  * @param partdef pointer to the partition definition string i.e. <part-def>
599  * @param retpart pointer to the allocated partition (output)
616 	/* fetch the partition size */  in part_parse()
618 		/* assign all remaining space to this partition */  in part_parse()
625 			printf("partition size too small (%llx)\n", size);  in part_parse()
641 			printf("no closing ) found in partition name\n");  in part_parse()
646 			printf("empty partition name\n");  in part_parse()
663 	/* check for next partition definition */  in part_parse()
667 			printf("no partitions allowed after a fill-up partition\n");  in part_parse()
674 		printf("unexpected character '%c' at the end of partition\n", *p);  in part_parse()
704 	debug("+ partition: name %-22s size 0x%08llx offset 0x%08llx mask flags %d\n",  in part_parse()
773 			/* reset first partition from first dev from the  in device_del()
890 		/* if device already exists start at the end of the last partition */  in device_parse()
912 		/* partition is ok, add it to the list */  in device_parse()
1127 			/* partition size */  in generate_mtdparts()
1229  * Get the net size (w/o bad blocks) of the given partition.
1232  * @param part the partition
1233  * @return the calculated net size of this partition
1305  * Format and print out a partition list for each device from global device
1319 			printf("\nactive partition: %s%d,%d - (%s) 0x%08llx @ 0x%08llx\n",
1324 			printf("could not get current partition info\n\n");
1342  * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1343  * corresponding device and verify partition number.
1345  * @param id string describing device and partition or partition name
1347  * @param part_num verified partition number (output)
1348  * @param part pointer to requested partition (output)
1380 		printf("no partition number specified\n");
1395 		printf("no such partition\n");
1406  * Find and delete partition. For partition id format see find_dev_and_part().
1408  * @param id string describing device and partition
1419 		debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08llx@0x%08llx\n",
1433 	printf("partition %s not found\n", id);
1439  * Increase the size of the given partition so that it's net size is at least
1440  * as large as the size member and such that the next partition would start on a
1441  * good block if it were adjacent to this partition.
1444  * @param part the partition
1445  * @param next_offset pointer to the offset of the next partition after this
1446  *                    partition's size has been modified (output)
1459 	 * partition also into the partition, such that
1460 	 * the next partition starts with a good block.
1472 		printf("truncated partition %s to %lld bytes\n", part->name,
1481  * Adjust all of the partition sizes, such that all partitions are at least
1507 			debug("spread_partitions: device = %s%d, partition %d ="
1722  * device/partition list.
1752 	current_partition = env_get("partition");
1754 	/* save it for later parsing, cannot rely on current partition pointer
1755 	 * as 'partition' variable may be updated during init */
1829 		/* reset first partition from first dev from the list as current */
1843 	/* do not process current partition if mtdparts variable is null */
1847 	/* is current partition set in environment? if so, use it */
1853 		debug("--- getting current partition: %s\n", tmp_ep);
1860 	} else if (env_get("partition") == NULL) {
1861 		debug("no partition variable set, setting...\n");
1869  * Return pointer to the partition of a requested number from a requested
1872  * @param dev device that is to be searched for a partition
1873  * @param part_num requested partition number
1885 	debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
1890 		printf("invalid partition number %d for device %s%d (%s)\n",
1896 	/* locate partition number, return it */
1914  * Routine implementing u-boot chpart command. Sets new current partition based
1915  * on the user supplied partition id. For partition id format see find_dev_and_part().
1934 		printf("no partition id specified\n");
1945 	printf("partition changed to %s%d,%d\n",
1953  * partition list and process user partition request (list, add, del).
1968 			env_set("partition", NULL);
2022 			printf("too long partition description\n");
2051 			/* merge new partition with existing ones*/
2082 	"change active partition",
2084 	"    - change active partition (e.g. part-id = nand0,1)"
2090 	"    - list partition table\n"
2094 	"    - delete partition (e.g. part-id = nand0,1)\n"
2096 	"    - add partition\n"
2099 	"    - add partition, padding size by skipping bad blocks\n"
2102 	"    - reset partition table to defaults\n"
2113 	"'partition' - keeps current partition identifier\n\n"
2114 	"partition  := <part-id>\n"
2122 	"'mtdparts' - partition list\n\n"
2128 	"<offset>   := partition start offset within the device\n"
2130 	"<ro-flag>  := when set to 'ro' makes partition read-only (not used, passed to kernel)";