diff options
Diffstat (limited to 'common/cmd_mtdparts.c')
| -rw-r--r-- | common/cmd_mtdparts.c | 2106 |
1 files changed, 0 insertions, 2106 deletions
diff --git a/common/cmd_mtdparts.c b/common/cmd_mtdparts.c deleted file mode 100644 index 422c069513..0000000000 --- a/common/cmd_mtdparts.c +++ /dev/null @@ -1,2106 +0,0 @@ -/* - * (C) Copyright 2002 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * (C) Copyright 2002 - * Robert Schwebel, Pengutronix, <r.schwebel@pengutronix.de> - * - * (C) Copyright 2003 - * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de> - * - * (C) Copyright 2005 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * Added support for reading flash partition table from environment. - * Parsing routines are based on driver/mtd/cmdline.c from the linux 2.4 - * kernel tree. - * - * (C) Copyright 2008 - * Harald Welte, OpenMoko, Inc., Harald Welte <laforge@openmoko.org> - * - * $Id: cmdlinepart.c,v 1.17 2004/11/26 11:18:47 lavinen Exp $ - * Copyright 2002 SYSGO Real-Time Solutions GmbH - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/* - * Three environment variables are used by the parsing routines: - * - * 'partition' - keeps current partition identifier - * - * partition := <part-id> - * <part-id> := <dev-id>,part_num - * - * - * 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping - * - * mtdids=<idmap>[,<idmap>,...] - * - * <idmap> := <dev-id>=<mtd-id> - * <dev-id> := 'nand'|'nor'|'onenand'<dev-num> - * <dev-num> := mtd device number, 0... - * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name) - * - * - * 'mtdparts' - partition list - * - * mtdparts=mtdparts=<mtd-def>[;<mtd-def>...] - * - * <mtd-def> := <mtd-id>:<part-def>[,<part-def>...] - * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name) - * <part-def> := <size>[@<offset>][<name>][<ro-flag>] - * <size> := standard linux memsize OR '-' to denote all remaining space - * <offset> := partition start offset within the device - * <name> := '(' NAME ')' - * <ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel) - * - * Notes: - * - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping - * - if the above variables are not set defaults for a given target are used - * - * Examples: - * - * 1 NOR Flash, with 1 single writable partition: - * mtdids=nor0=edb7312-nor - * mtdparts=mtdparts=edb7312-nor:- - * - * 1 NOR Flash with 2 partitions, 1 NAND with one - * mtdids=nor0=edb7312-nor,nand0=edb7312-nand - * mtdparts=mtdparts=edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home) - * - */ - -#include <common.h> -#include <command.h> -#include <malloc.h> -#include <jffs2/load_kernel.h> -#include <linux/list.h> -#include <linux/ctype.h> -#include <linux/err.h> -#include <linux/mtd/mtd.h> - -#if defined(CONFIG_CMD_NAND) -#include <linux/mtd/nand.h> -#include <nand.h> -#endif - -#if defined(CONFIG_CMD_ONENAND) -#include <linux/mtd/onenand.h> -#include <onenand_uboot.h> -#endif - -DECLARE_GLOBAL_DATA_PTR; - -/* special size referring to all the remaining space in a partition */ -#define SIZE_REMAINING (~0llu) - -/* special offset value, it is used when not provided by user - * - * this value is used temporarily during parsing, later such offests - * are recalculated */ -#define OFFSET_NOT_SPECIFIED (~0llu) - -/* minimum partition size */ -#define MIN_PART_SIZE 4096 - -/* this flag needs to be set in part_info struct mask_flags - * field for read-only partitions */ -#define MTD_WRITEABLE_CMD 1 - -/* default values for mtdids and mtdparts variables */ -#if defined(MTDIDS_DEFAULT) -static const char *const mtdids_default = MTDIDS_DEFAULT; -#else -static const char *const mtdids_default = NULL; -#endif - -#if defined(MTDPARTS_DEFAULT) -static const char *const mtdparts_default = MTDPARTS_DEFAULT; -#else -static const char *const mtdparts_default = NULL; -#endif - -/* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */ -#define MTDIDS_MAXLEN 128 -#define MTDPARTS_MAXLEN 512 -#define PARTITION_MAXLEN 16 -static char last_ids[MTDIDS_MAXLEN]; -static char last_parts[MTDPARTS_MAXLEN]; -static char last_partition[PARTITION_MAXLEN]; - -/* low level jffs2 cache cleaning routine */ -extern void jffs2_free_cache(struct part_info *part); - -/* mtdids mapping list, filled by parse_ids() */ -static struct list_head mtdids; - -/* device/partition list, parse_cmdline() parses into here */ -static struct list_head devices; - -/* current active device and partition number */ -struct mtd_device *current_mtd_dev = NULL; -u8 current_mtd_partnum = 0; - -static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num); - -/* command line only routines */ -static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len); -static int device_del(struct mtd_device *dev); - -/** - * Parses a string into a number. The number stored at ptr is - * potentially suffixed with K (for kilobytes, or 1024 bytes), - * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or - * 1073741824). If the number is suffixed with K, M, or G, then - * the return value is the number multiplied by one kilobyte, one - * megabyte, or one gigabyte, respectively. - * - * @param ptr where parse begins - * @param retptr output pointer to next char after parse completes (output) - * @return resulting unsigned int - */ -static u64 memsize_parse (const char *const ptr, const char **retptr) -{ - u64 ret = simple_strtoull(ptr, (char **)retptr, 0); - - switch (**retptr) { - case 'G': - case 'g': - ret <<= 10; - case 'M': - case 'm': - ret <<= 10; - case 'K': - case 'k': - ret <<= 10; - (*retptr)++; - default: - break; - } - - return ret; -} - -/** - * Format string describing supplied size. This routine does the opposite job - * to memsize_parse(). Size in bytes is converted to string and if possible - * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix. - * - * Note, that this routine does not check for buffer overflow, it's the caller - * who must assure enough space. - * - * @param buf output buffer - * @param size size to be converted to string - */ -static void memsize_format(char *buf, u64 size) -{ -#define SIZE_GB ((u32)1024*1024*1024) -#define SIZE_MB ((u32)1024*1024) -#define SIZE_KB ((u32)1024) - - if ((size % SIZE_GB) == 0) - sprintf(buf, "%llug", size/SIZE_GB); - else if ((size % SIZE_MB) == 0) - sprintf(buf, "%llum", size/SIZE_MB); - else if (size % SIZE_KB == 0) - sprintf(buf, "%lluk", size/SIZE_KB); - else - sprintf(buf, "%llu", size); -} - -/** - * This routine does global indexing of all partitions. Resulting index for - * current partition is saved in 'mtddevnum'. Current partition name in - * 'mtddevname'. - */ -static void index_partitions(void) -{ - u16 mtddevnum; - struct part_info *part; - struct list_head *dentry; - struct mtd_device *dev; - - debug("--- index partitions ---\n"); - - if (current_mtd_dev) { - mtddevnum = 0; - list_for_each(dentry, &devices) { - dev = list_entry(dentry, struct mtd_device, link); - if (dev == current_mtd_dev) { - mtddevnum += current_mtd_partnum; - setenv_ulong("mtddevnum", mtddevnum); - break; - } - mtddevnum += dev->num_parts; - } - - part = mtd_part_info(current_mtd_dev, current_mtd_partnum); - setenv("mtddevname", part->name); - - debug("=> mtddevnum %d,\n=> mtddevname %s\n", mtddevnum, part->name); - } else { - setenv("mtddevnum", NULL); - setenv("mtddevname", NULL); - - debug("=> mtddevnum NULL\n=> mtddevname NULL\n"); - } -} - -/** - * Save current device and partition in environment variable 'partition'. - */ -static void current_save(void) -{ - char buf[16]; - - debug("--- current_save ---\n"); - - if (current_mtd_dev) { - sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev->id->type), - current_mtd_dev->id->num, current_mtd_partnum); - - setenv("partition", buf); - strncpy(last_partition, buf, 16); - - debug("=> partition %s\n", buf); - } else { - setenv("partition", NULL); - last_partition[0] = '\0'; - - debug("=> partition NULL\n"); - } - index_partitions(); -} - - -/** - * Produce a mtd_info given a type and num. - * - * @param type mtd type - * @param num mtd number - * @param mtd a pointer to an mtd_info instance (output) - * @return 0 if device is valid, 1 otherwise - */ -static int get_mtd_info(u8 type, u8 num, struct mtd_info **mtd) -{ - char mtd_dev[16]; - - sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(type), num); - *mtd = get_mtd_device_nm(mtd_dev); - if (IS_ERR(*mtd)) { - printf("Device %s not found!\n", mtd_dev); - return 1; - } - put_mtd_device(*mtd); - - return 0; -} - -/** - * Performs sanity check for supplied flash partition. - * Table of existing MTD flash devices is searched and partition device - * is located. Alignment with the granularity of nand erasesize is verified. - * - * @param id of the parent device - * @param part partition to validate - * @return 0 if partition is valid, 1 otherwise - */ -static int part_validate_eraseblock(struct mtdids *id, struct part_info *part) -{ - struct mtd_info *mtd = NULL; - int i, j; - ulong start; - u64 offset, size; - - if (get_mtd_info(id->type, id->num, &mtd)) - return 1; - - part->sector_size = mtd->erasesize; - - if (!mtd->numeraseregions) { - /* - * Only one eraseregion (NAND, OneNAND or uniform NOR), - * checking for alignment is easy here - */ - offset = part->offset; - if (do_div(offset, mtd->erasesize)) { - printf("%s%d: partition (%s) start offset" - "alignment incorrect\n", - MTD_DEV_TYPE(id->type), id->num, part->name); - return 1; - } - - size = part->size; - if (do_div(size, mtd->erasesize)) { - printf("%s%d: partition (%s) size alignment incorrect\n", - MTD_DEV_TYPE(id->type), id->num, part->name); - return 1; - } - } else { - /* - * Multiple eraseregions (non-uniform NOR), - * checking for alignment is more complex here - */ - - /* Check start alignment */ - for (i = 0; i < mtd->numeraseregions; i++) { - start = mtd->eraseregions[i].offset; - for (j = 0; j < mtd->eraseregions[i].numblocks; j++) { - if (part->offset == start) - goto start_ok; - start += mtd->eraseregions[i].erasesize; - } - } - - printf("%s%d: partition (%s) start offset alignment incorrect\n", - MTD_DEV_TYPE(id->type), id->num, part->name); - return 1; - - start_ok: - - /* Check end/size alignment */ - for (i = 0; i < mtd->numeraseregions; i++) { - start = mtd->eraseregions[i].offset; - for (j = 0; j < mtd->eraseregions[i].numblocks; j++) { - if ((part->offset + part->size) == start) - goto end_ok; - start += mtd->eraseregions[i].erasesize; - } - } - /* Check last sector alignment */ - if ((part->offset + part->size) == start) - goto end_ok; - - printf("%s%d: partition (%s) size alignment incorrect\n", - MTD_DEV_TYPE(id->type), id->num, part->name); - return 1; - - end_ok: - return 0; - } - - return 0; -} - - -/** - * Performs sanity check for supplied partition. Offset and size are - * verified to be within valid range. Partition type is checked and - * part_validate_eraseblock() is called with the argument of part. - * - * @param id of the parent device - * @param part partition to validate - * @return 0 if partition is valid, 1 otherwise - */ -static int part_validate(struct mtdids *id, struct part_info *part) -{ - if (part->size == SIZE_REMAINING) - part->size = id->size - part->offset; - - if (part->offset > id->size) { - printf("%s: offset %08llx beyond flash size %08llx\n", - id->mtd_id, part->offset, id->size); - return 1; - } - - if ((part->offset + part->size) <= part->offset) { - printf("%s%d: partition (%s) size too big\n", - MTD_DEV_TYPE(id->type), id->num, part->name); - return 1; - } - - if (part->offset + part->size > id->size) { - printf("%s: partitioning exceeds flash size\n", id->mtd_id); - return 1; - } - - /* - * Now we need to check if the partition starts and ends on - * sector (eraseblock) regions - */ - return part_validate_eraseblock(id, part); -} - -/** - * Delete selected partition from the partition list of the specified device. - * - * @param dev device to delete partition from - * @param part partition to delete - * @return 0 on success, 1 otherwise - */ -static int part_del(struct mtd_device *dev, struct part_info *part) -{ - u8 current_save_needed = 0; - - /* if there is only one partition, remove whole device */ - if (dev->num_parts == 1) - return device_del(dev); - - /* otherwise just delete this partition */ - - if (dev == current_mtd_dev) { - /* we are modyfing partitions for the current device, - * update current */ - struct part_info *curr_pi; - curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum); - - if (curr_pi) { - if (curr_pi == part) { - printf("current partition deleted, resetting current to 0\n"); - current_mtd_partnum = 0; - } else if (part->offset <= curr_pi->offset) { - current_mtd_partnum--; - } - current_save_needed = 1; - } - } - - list_del(&part->link); - free(part); - dev->num_parts--; - - if (current_save_needed > 0) - current_save(); - else - index_partitions(); - - return 0; -} - -/** - * Delete all partitions from parts head list, free memory. - * - * @param head list of partitions to delete - */ -static void part_delall(struct list_head *head) -{ - struct list_head *entry, *n; - struct part_info *part_tmp; - - /* clean tmp_list and free allocated memory */ - list_for_each_safe(entry, n, head) { - part_tmp = list_entry(entry, struct part_info, link); - - list_del(entry); - free(part_tmp); - } -} - -/** - * Add new partition to the supplied partition list. Make sure partitions are - * sorted by offset in ascending order. - * - * @param head list this partition is to be added to - * @param new partition to be added - */ -static int part_sort_add(struct mtd_device *dev, struct part_info *part) -{ - struct list_head *entry; - struct part_info *new_pi, *curr_pi; - - /* link partition to parrent dev */ - part->dev = dev; - - if (list_empty(&dev->parts)) { - debug("part_sort_add: list empty\n"); - list_add(&part->link, &dev->parts); - dev->num_parts++; - index_partitions(); - return 0; - } - - new_pi = list_entry(&part->link, struct part_info, link); - - /* get current partition info if we are updating current device */ - curr_pi = NULL; - if (dev == current_mtd_dev) - curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum); - - list_for_each(entry, &dev->parts) { - struct part_info *pi; - - pi = list_entry(entry, struct part_info, link); - - /* be compliant with kernel cmdline, allow only one partition at offset zero */ - if ((new_pi->offset == pi->offset) && (pi->offset == 0)) { - printf("cannot add second partition at offset 0\n"); - return 1; - } - - if (new_pi->offset <= pi->offset) { - list_add_tail(&part->link, entry); - dev->num_parts++; - - if (curr_pi && (pi->offset <= curr_pi->offset)) { - /* we are modyfing partitions for the current - * device, update current */ - current_mtd_partnum++; - current_save(); - } else { - index_partitions(); - } - return 0; - } - } - - list_add_tail(&part->link, &dev->parts); - dev->num_parts++; - index_partitions(); - return 0; -} - -/** - * Add provided partition to the partition list of a given device. - * - * @param dev device to which partition is added - * @param part partition to be added - * @return 0 on success, 1 otherwise - */ -static int part_add(struct mtd_device *dev, struct part_info *part) -{ - /* verify alignment and size */ - if (part_validate(dev->id, part) != 0) - return 1; - - /* partition is ok, add it to the list */ - if (part_sort_add(dev, part) != 0) - return 1; - - return 0; -} - -/** - * Parse one partition definition, allocate memory and return pointer to this - * location in retpart. - * - * @param partdef pointer to the partition definition string i.e. <part-def> - * @param ret output pointer to next char after parse completes (output) - * @param retpart pointer to the allocated partition (output) - * @return 0 on success, 1 otherwise - */ -static int part_parse(const char *const partdef, const char **ret, struct part_info **retpart) -{ - struct part_info *part; - u64 size; - u64 offset; - const char *name; - int name_len; - unsigned int mask_flags; - const char *p; - - p = partdef; - *retpart = NULL; - *ret = NULL; - - /* fetch the partition size */ - if (*p == '-') { - /* assign all remaining space to this partition */ - debug("'-': remaining size assigned\n"); - size = SIZE_REMAINING; - p++; - } else { - size = memsize_parse(p, &p); - if (size < MIN_PART_SIZE) { - printf("partition size too small (%llx)\n", size); - return 1; - } - } - - /* check for offset */ - offset = OFFSET_NOT_SPECIFIED; - if (*p == '@') { - p++; - offset = memsize_parse(p, &p); - } - - /* now look for the name */ - if (*p == '(') { - name = ++p; - if ((p = strchr(name, ')')) == NULL) { - printf("no closing ) found in partition name\n"); - return 1; - } - name_len = p - name + 1; - if ((name_len - 1) == 0) { - printf("empty partition name\n"); - return 1; - } - p++; - } else { - /* 0x00000000@0x00000000 */ - name_len = 22; - name = NULL; - } - - /* test for options */ - mask_flags = 0; - if (strncmp(p, "ro", 2) == 0) { - mask_flags |= MTD_WRITEABLE_CMD; - p += 2; - } - - /* check for next partition definition */ - if (*p == ',') { - if (size == SIZE_REMAINING) { - *ret = NULL; - printf("no partitions allowed after a fill-up partition\n"); - return 1; - } - *ret = ++p; - } else if ((*p == ';') || (*p == '\0')) { - *ret = p; - } else { - printf("unexpected character '%c' at the end of partition\n", *p); - *ret = NULL; - return 1; - } - - /* allocate memory */ - part = (struct part_info *)malloc(sizeof(struct part_info) + name_len); - if (!part) { - printf("out of memory\n"); - return 1; - } - memset(part, 0, sizeof(struct part_info) + name_len); - part->size = size; - part->offset = offset; - part->mask_flags = mask_flags; - part->name = (char *)(part + 1); - - if (name) { - /* copy user provided name */ - strncpy(part->name, name, name_len - 1); - part->auto_name = 0; - } else { - /* auto generated name in form of size@offset */ - sprintf(part->name, "0x%08llx@0x%08llx", size, offset); - part->auto_name = 1; - } - - part->name[name_len - 1] = '\0'; - INIT_LIST_HEAD(&part->link); - - debug("+ partition: name %-22s size 0x%08llx offset 0x%08llx mask flags %d\n", - part->name, part->size, - part->offset, part->mask_flags); - - *retpart = part; - return 0; -} - -/** - * Check device number to be within valid range for given device type. - * - * @param type mtd type - * @param num mtd number - * @param size a pointer to the size of the mtd device (output) - * @return 0 if device is valid, 1 otherwise - */ -static int mtd_device_validate(u8 type, u8 num, u64 *size) -{ - struct mtd_info *mtd = NULL; - - if (get_mtd_info(type, num, &mtd)) - return 1; - - *size = mtd->size; - - return 0; -} - -/** - * Delete all mtd devices from a supplied devices list, free memory allocated for - * each device and delete all device partitions. - * - * @return 0 on success, 1 otherwise - */ -static int device_delall(struct list_head *head) -{ - struct list_head *entry, *n; - struct mtd_device *dev_tmp; - - /* clean devices list */ - list_for_each_safe(entry, n, head) { - dev_tmp = list_entry(entry, struct mtd_device, link); - list_del(entry); - part_delall(&dev_tmp->parts); - free(dev_tmp); - } - INIT_LIST_HEAD(&devices); - - return 0; -} - -/** - * If provided device exists it's partitions are deleted, device is removed - * from device list and device memory is freed. - * - * @param dev device to be deleted - * @return 0 on success, 1 otherwise - */ -static int device_del(struct mtd_device *dev) -{ - part_delall(&dev->parts); - list_del(&dev->link); - free(dev); - - if (dev == current_mtd_dev) { - /* we just deleted current device */ - if (list_empty(&devices)) { - current_mtd_dev = NULL; - } else { - /* reset first partition from first dev from the - * devices list as current */ - current_mtd_dev = list_entry(devices.next, struct mtd_device, link); - current_mtd_partnum = 0; - } - current_save(); - return 0; - } - - index_partitions(); - return 0; -} - -/** - * Search global device list and return pointer to the device of type and num - * specified. - * - * @param type device type - * @param num device number - * @return NULL if requested device does not exist - */ -struct mtd_device *device_find(u8 type, u8 num) -{ - struct list_head *entry; - struct mtd_device *dev_tmp; - - list_for_each(entry, &devices) { - dev_tmp = list_entry(entry, struct mtd_device, link); - - if ((dev_tmp->id->type == type) && (dev_tmp->id->num == num)) - return dev_tmp; - } - - return NULL; -} - -/** - * Add specified device to the global device list. - * - * @param dev device to be added - */ -static void device_add(struct mtd_device *dev) -{ - u8 current_save_needed = 0; - - if (list_empty(&devices)) { - current_mtd_dev = dev; - current_mtd_partnum = 0; - current_save_needed = 1; - } - - list_add_tail(&dev->link, &devices); - - if (current_save_needed > 0) - current_save(); - else - index_partitions(); -} - -/** - * Parse device type, name and mtd-id. If syntax is ok allocate memory and - * return pointer to the device structure. - * - * @param mtd_dev pointer to the device definition string i.e. <mtd-dev> - * @param ret output pointer to next char after parse completes (output) - * @param retdev pointer to the allocated device (output) - * @return 0 on success, 1 otherwise - */ -static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_device **retdev) -{ - struct mtd_device *dev; - struct part_info *part; - struct mtdids *id; - const char *mtd_id; - unsigned int mtd_id_len; - const char *p; - const char *pend; - LIST_HEAD(tmp_list); - struct list_head *entry, *n; - u16 num_parts; - u64 offset; - int err = 1; - - debug("===device_parse===\n"); - - assert(retdev); - *retdev = NULL; - - if (ret) - *ret = NULL; - - /* fetch <mtd-id> */ - mtd_id = p = mtd_dev; - if (!(p = strchr(mtd_id, ':'))) { - printf("no <mtd-id> identifier\n"); - return 1; - } - mtd_id_len = p - mtd_id + 1; - p++; - - /* verify if we have a valid device specified */ - if ((id = id_find_by_mtd_id(mtd_id, mtd_id_len - 1)) == NULL) { - printf("invalid mtd device '%.*s'\n", mtd_id_len - 1, mtd_id); - return 1; - } - -#ifdef DEBUG - pend = strchr(p, ';'); -#endif - debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n", - id->type, MTD_DEV_TYPE(id->type), - id->num, id->mtd_id); - debug("parsing partitions %.*s\n", (int)(pend ? pend - p : strlen(p)), p); - - - /* parse partitions */ - num_parts = 0; - - offset = 0; - if ((dev = device_find(id->type, id->num)) != NULL) { - /* if device already exists start at the end of the last partition */ - part = list_entry(dev->parts.prev, struct part_info, link); - offset = part->offset + part->size; - } - - while (p && (*p != '\0') && (*p != ';')) { - err = 1; - if ((part_parse(p, &p, &part) != 0) || (!part)) - break; - - /* calculate offset when not specified */ - if (part->offset == OFFSET_NOT_SPECIFIED) - part->offset = offset; - else - offset = part->offset; - - /* verify alignment and size */ - if (part_validate(id, part) != 0) - break; - - offset += part->size; - - /* partition is ok, add it to the list */ - list_add_tail(&part->link, &tmp_list); - num_parts++; - err = 0; - } - if (err == 1) { - part_delall(&tmp_list); - return 1; - } - - if (num_parts == 0) { - printf("no partitions for device %s%d (%s)\n", - MTD_DEV_TYPE(id->type), id->num, id->mtd_id); - return 1; - } - - debug("\ntotal partitions: %d\n", num_parts); - - /* check for next device presence */ - if (p) { - if (*p == ';') { - if (ret) - *ret = ++p; - } else if (*p == '\0') { - if (ret) - *ret = p; - } else { - printf("unexpected character '%c' at the end of device\n", *p); - if (ret) - *ret = NULL; - return 1; - } - } - - /* allocate memory for mtd_device structure */ - if ((dev = (struct mtd_device *)malloc(sizeof(struct mtd_device))) == NULL) { - printf("out of memory\n"); - return 1; - } - memset(dev, 0, sizeof(struct mtd_device)); - dev->id = id; - dev->num_parts = 0; /* part_sort_add increments num_parts */ - INIT_LIST_HEAD(&dev->parts); - INIT_LIST_HEAD(&dev->link); - - /* move partitions from tmp_list to dev->parts */ - list_for_each_safe(entry, n, &tmp_list) { - part = list_entry(entry, struct part_info, link); - list_del(entry); - if (part_sort_add(dev, part) != 0) { - device_del(dev); - return 1; - } - } - - *retdev = dev; - - debug("===\n\n"); - return 0; -} - -/** - * Initialize global device list. - * - * @return 0 on success, 1 otherwise - */ -static int mtd_devices_init(void) -{ - last_parts[0] = '\0'; - current_mtd_dev = NULL; - current_save(); - - return device_delall(&devices); -} - -/* - * Search global mtdids list and find id of requested type and number. - * - * @return pointer to the id if it exists, NULL otherwise - */ -static struct mtdids* id_find(u8 type, u8 num) -{ - struct list_head *entry; - struct mtdids *id; - - list_for_each(entry, &mtdids) { - id = list_entry(entry, struct mtdids, link); - - if ((id->type == type) && (id->num == num)) - return id; - } - - return NULL; -} - -/** - * Search global mtdids list and find id of a requested mtd_id. - * - * Note: first argument is not null terminated. - * - * @param mtd_id string containing requested mtd_id - * @param mtd_id_len length of supplied mtd_id - * @return pointer to the id if it exists, NULL otherwise - */ -static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len) -{ - struct list_head *entry; - struct mtdids *id; - - 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 = %zu)\n", - 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) -{ - 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]; - u64 size, offset; - u32 len, part_cnt; - u32 maxlen = buflen - 1; - - debug("--- generate_mtdparts ---\n"); - - 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); - /* 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%08llx\t0x%08llx\t%d\n", - part_num, part->name, part->size, - part->offset, part->mask_flags); -#endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */ - part_num++; - } - } - - 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%08llx @ 0x%08llx\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); - - 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%08llx@0x%08llx\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; -} - -#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), - 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; - u64 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); - 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%16lld bytes\t%s\n", - 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"); - 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; - current_save(); - - 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"); - 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", - 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[]) -{ - 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 - 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); - -#if defined(CONFIG_CMD_MTDPARTS_SPREAD) - if (get_mtd_info(dev->id->type, dev->id->num, &mtd)) - return 1; - - if (!strcmp(&argv[1][3], ".spread")) { - spread_partition(mtd, p, &next_offset); - debug("increased %s to %d bytes\n", p->name, p->size); - } -#endif - - dev_tmp = device_find(dev->id->type, dev->id->num); - if (dev_tmp == NULL) { - device_add(dev); - } else if (part_add(dev_tmp, p) != 0) { - /* merge new partition with existing ones*/ - device_del(dev); - return 1; - } - - if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) { - printf("generated mtdparts too long, resetting to null\n"); - return 1; - } - - return 0; - } - - /* mtdparts del part-id */ - if ((argc == 3) && (strcmp(argv[1], "del") == 0)) { - debug("del: part-id = %s\n", argv[2]); - - return delete_partition(argv[2]); - } - -#if defined(CONFIG_CMD_MTDPARTS_SPREAD) - if ((argc == 2) && (strcmp(argv[1], "spread") == 0)) - return spread_partitions(); -#endif /* CONFIG_CMD_MTDPARTS_SPREAD */ - - return CMD_RET_USAGE; -} - -/***************************************************/ -U_BOOT_CMD( - chpart, 2, 0, do_chpart, - "change active partition", - "part-id\n" - " - change active partition (e.g. part-id = nand0,1)" -); - -#ifdef CONFIG_SYS_LONGHELP -static char mtdparts_help_text[] = - "\n" - " - list partition table\n" - "mtdparts delall\n" - " - delete all partitions\n" - "mtdparts del part-id\n" - " - delete partition (e.g. part-id = nand0,1)\n" - "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n" - " - add partition\n" -#if defined(CONFIG_CMD_MTDPARTS_SPREAD) - "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n" - " - add partition, padding size by skipping bad blocks\n" -#endif - "mtdparts default\n" - " - reset partition table to defaults\n" -#if defined(CONFIG_CMD_MTDPARTS_SPREAD) - "mtdparts spread\n" - " - adjust the sizes of the partitions so they are\n" - " at least as big as the mtdparts variable specifies\n" - " and they each start on a good block\n\n" -#else - "\n" -#endif /* CONFIG_CMD_MTDPARTS_SPREAD */ - "-----\n\n" - "this command uses three environment variables:\n\n" - "'partition' - keeps current partition identifier\n\n" - "partition := <part-id>\n" - "<part-id> := <dev-id>,part_num\n\n" - "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n" - "mtdids=<idmap>[,<idmap>,...]\n\n" - "<idmap> := <dev-id>=<mtd-id>\n" - "<dev-id> := 'nand'|'nor'|'onenand'<dev-num>\n" - "<dev-num> := mtd device number, 0...\n" - "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n" - "'mtdparts' - partition list\n\n" - "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n" - "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n" - "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n" - "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n" - "<size> := standard linux memsize OR '-' to denote all remaining space\n" - "<offset> := partition start offset within the device\n" - "<name> := '(' NAME ')'\n" - "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)"; -#endif - -U_BOOT_CMD( - mtdparts, 6, 0, do_mtdparts, - "define flash/nand partitions", mtdparts_help_text -); -/***************************************************/ |
