| /* |
| * (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 |
| |
| /* overide mtd part in envs */ |
| #ifdef CONFIFG_AML_MTDPART |
| struct part_info *amlmtd_part = NULL; |
| int amlmtd_part_cnt = 0; |
| extern int mtdparts_init(void); |
| #endif |
| |
| /* default values for mtdids and mtdparts variables */ |
| #if defined(MTDIDS_DEFAULT) |
| static const char *const mtdids_default = MTDIDS_DEFAULT; |
| #endif |
| |
| #if defined(MTDPARTS_DEFAULT) |
| static const char *const mtdparts_default = MTDPARTS_DEFAULT; |
| #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"); |
| memset(buf, 0, 16); |
| 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 |
| |
| #ifndef CONFIFG_AML_MTDPART |
| 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"); |
| } |
| #endif |
| |
| /** |
| * Format and print out a partition list for each device from global device |
| * list. |
| */ |
| static void list_partitions(void) |
| { |
| #ifndef CONFIFG_AML_MTDPART |
| 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"); |
| #endif |
| } |
| |
| /** |
| * 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 |
| */ |
| #ifndef CONFIFG_AML_MTDPART |
| 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; |
| } |
| #else |
| |
| int find_dev_and_part(const char *id, struct mtd_device **dev, |
| u8 *part_num, struct part_info **part) |
| { |
| int i; |
| |
| *part_num = 0; |
| printk("--- find_dev_and_part ---\nid = %s\n", id); |
| if (amlmtd_part_cnt == 0) { |
| printk("%s() %d: amlmtd_part_cnt %d\n", __func__, __LINE__, |
| amlmtd_part_cnt); |
| return -1; |
| } |
| |
| for (i = 0; i <amlmtd_part_cnt; i++) { |
| if (!strcmp(id, amlmtd_part[i].name)) { |
| printk("found %s @ %d/%d", id, i, amlmtd_part_cnt); |
| break; |
| } |
| } |
| |
| if (i == amlmtd_part_cnt) { |
| return -1; |
| } else { |
| *part_num = i; |
| *part = &amlmtd_part[i]; |
| } |
| return 0; |
| } |
| #endif |
| |
| /** |
| * 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 __attribute__((unused))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 __attribute__((unused))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 |
| */ |
| #ifndef CONFIFG_AML_MTDPART |
| 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; |
| } |
| #endif |
| /** |
| * 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[]) |
| { |
| #ifdef CONFIFG_AML_MTDPART |
| if (argc > 1) { |
| printf("Don't support mtdpart XXX operation\n"); |
| return 0; |
| } |
| #else |
| 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(); |
| } |
| } |
| #endif |
| |
| /* 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 |
| ); |
| /***************************************************/ |