/*
* (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>
*
- * See file CREDITS for list of people who contributed to this
- * project.
+ * (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.
+ *
+ * $Id: cmdlinepart.c,v 1.17 2004/11/26 11:18:47 lavinen Exp $
+ * Copyright 2002 SYSGO Real-Time Solutions GmbH
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * 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'<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)
+ *
+ */
+
+/*
+ * JFFS2/CRAMFS support
+ */
+#include <common.h>
+#include <command.h>
+#include <malloc.h>
+#include <jffs2/jffs2.h>
+#include <linux/list.h>
+#include <linux/ctype.h>
+
+#if defined(CONFIG_CMD_JFFS2)
+
+#include <cramfs/cramfs_fs.h>
+
+#if defined(CONFIG_CMD_NAND)
+#ifdef CFG_NAND_LEGACY
+#include <linux/mtd/nand_legacy.h>
+#else /* !CFG_NAND_LEGACY */
+#include <linux/mtd/nand.h>
+#include <nand.h>
+#endif /* !CFG_NAND_LEGACY */
+#endif
+/* enable/disable debugging messages */
+#define DEBUG_JFFS
+#undef DEBUG_JFFS
+
+#ifdef DEBUG_JFFS
+# define DEBUGF(fmt, args...) printf(fmt ,##args)
+#else
+# define DEBUGF(fmt, args...)
+#endif
+
+/* special size referring to all the remaining space in a partition */
+#define SIZE_REMAINING 0xFFFFFFFF
+
+/* 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 0xFFFFFFFF
+
+/* 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
+
+#ifdef CONFIG_JFFS2_CMDLINE
+/* default values for mtdids and mtdparts variables */
+#if defined(MTDIDS_DEFAULT)
+static const char *const mtdids_default = MTDIDS_DEFAULT;
+#else
+#warning "MTDIDS_DEFAULT not defined!"
+static const char *const mtdids_default = NULL;
+#endif
+
+#if defined(MTDPARTS_DEFAULT)
+static const char *const mtdparts_default = MTDPARTS_DEFAULT;
+#else
+#warning "MTDPARTS_DEFAULT not defined!"
+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() */
+struct list_head mtdids;
+
+/* device/partition list, parse_cmdline() parses into here */
+struct list_head devices;
+#endif /* #ifdef CONFIG_JFFS2_CMDLINE */
+
+/* current active device and partition number */
+static struct mtd_device *current_dev = NULL;
+static u8 current_partnum = 0;
+
+extern int cramfs_check (struct part_info *info);
+extern int cramfs_load (char *loadoffset, struct part_info *info, char *filename);
+extern int cramfs_ls (struct part_info *info, char *filename);
+extern int cramfs_info (struct part_info *info);
+
+static struct part_info* jffs2_part_info(struct mtd_device *dev, unsigned int part_num);
+
+/* command line only routines */
+#ifdef CONFIG_JFFS2_CMDLINE
+
+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 unsigned long memsize_parse (const char *const ptr, const char **retptr)
+{
+ unsigned long ret = simple_strtoul(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, u32 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, "%lug", size/SIZE_GB);
+ else if ((size % SIZE_MB) == 0)
+ sprintf(buf, "%lum", size/SIZE_MB);
+ else if (size % SIZE_KB == 0)
+ sprintf(buf, "%luk", size/SIZE_KB);
+ else
+ sprintf(buf, "%lu", 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)
+{
+ char buf[16];
+ u16 mtddevnum;
+ struct part_info *part;
+ struct list_head *dentry;
+ struct mtd_device *dev;
+
+ DEBUGF("--- index partitions ---\n");
+
+ if (current_dev) {
+ mtddevnum = 0;
+ list_for_each(dentry, &devices) {
+ dev = list_entry(dentry, struct mtd_device, link);
+ if (dev == current_dev) {
+ mtddevnum += current_partnum;
+ sprintf(buf, "%d", mtddevnum);
+ setenv("mtddevnum", buf);
+ break;
+ }
+ mtddevnum += dev->num_parts;
+ }
+
+ part = jffs2_part_info(current_dev, current_partnum);
+ setenv("mtddevname", part->name);
+
+ DEBUGF("=> mtddevnum %d,\n=> mtddevname %s\n", mtddevnum, part->name);
+ } else {
+ setenv("mtddevnum", NULL);
+ setenv("mtddevname", NULL);
+
+ DEBUGF("=> mtddevnum NULL\n=> mtddevname NULL\n");
+ }
+}
+
+/**
+ * Save current device and partition in environment variable 'partition'.
+ */
+static void current_save(void)
+{
+ char buf[16];
+
+ DEBUGF("--- current_save ---\n");
+
+ if (current_dev) {
+ sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_dev->id->type),
+ current_dev->id->num, current_partnum);
+
+ setenv("partition", buf);
+ strncpy(last_partition, buf, 16);
+
+ DEBUGF("=> partition %s\n", buf);
+ } else {
+ setenv("partition", NULL);
+ last_partition[0] = '\0';
+
+ DEBUGF("=> partition NULL\n");
+ }
+ index_partitions();
+}
+
+/**
+ * Performs sanity check for supplied NOR flash partition. Table of existing
+ * NOR flash devices is searched and partition device is located. Alignment
+ * with the granularity of NOR flash sectors 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_nor(struct mtdids *id, struct part_info *part)
+{
+#if defined(CONFIG_CMD_FLASH)
+ /* info for FLASH chips */
+ extern flash_info_t flash_info[];
+ flash_info_t *flash;
+ int offset_aligned;
+ u32 end_offset;
+ int i;
+
+ flash = &flash_info[id->num];
+
+ offset_aligned = 0;
+ for (i = 0; i < flash->sector_count; i++) {
+ if ((flash->start[i] - flash->start[0]) == part->offset) {
+ offset_aligned = 1;
+ break;
+ }
+ }
+ if (offset_aligned == 0) {
+ printf("%s%d: partition (%s) start offset alignment incorrect\n",
+ MTD_DEV_TYPE(id->type), id->num, part->name);
+ return 1;
+ }
+
+ end_offset = part->offset + part->size;
+ for (i = 0; i < flash->sector_count; i++) {
+ if ((flash->start[i] - flash->start[0]) == end_offset)
+ return 0;
+ }
+
+ if (flash->size == end_offset)
+ return 0;
+
+ printf("%s%d: partition (%s) size alignment incorrect\n",
+ MTD_DEV_TYPE(id->type), id->num, part->name);
+#endif
+ return 1;
+}
+
+/**
+ * Performs sanity check for supplied NAND flash partition. Table of existing
+ * NAND 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_nand(struct mtdids *id, struct part_info *part)
+{
+#if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND)
+ /* info for NAND chips */
+ nand_info_t *nand;
+
+ nand = &nand_info[id->num];
+
+ if ((unsigned long)(part->offset) % nand->erasesize) {
+ printf("%s%d: partition (%s) start offset alignment incorrect\n",
+ MTD_DEV_TYPE(id->type), id->num, part->name);
+ return 1;
+ }
+
+ if (part->size % nand->erasesize) {
+ printf("%s%d: partition (%s) size alignment incorrect\n",
+ MTD_DEV_TYPE(id->type), id->num, part->name);
+ return 1;
+ }
+
+ return 0;
+#else
+ return 1;
+#endif
+}
+
+/**
+ * Performs sanity check for supplied partition. Offset and size are verified
+ * to be within valid range. Partition type is checked and either
+ * parts_validate_nor() or parts_validate_nand() 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 %08lx beyond flash size %08lx\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;
+ }
+
+ if (id->type == MTD_DEV_TYPE_NAND)
+ return part_validate_nand(id, part);
+ else if (id->type == MTD_DEV_TYPE_NOR)
+ return part_validate_nor(id, part);
+ else
+ DEBUGF("part_validate: invalid dev type\n");
+
+ return 1;
+}
+
+/**
+ * Delete selected partition from the partion 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_dev) {
+ /* we are modyfing partitions for the current device,
+ * update current */
+ struct part_info *curr_pi;
+ curr_pi = jffs2_part_info(current_dev, current_partnum);
+
+ if (curr_pi) {
+ if (curr_pi == part) {
+ printf("current partition deleted, resetting current to 0\n");
+ current_partnum = 0;
+ } else if (part->offset <= curr_pi->offset) {
+ current_partnum--;
+ }
+ current_save_needed = 1;
+ }
+ }
+
+#ifdef CFG_NAND_LEGACY
+ jffs2_free_cache(part);
+#endif
+ 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);
+
+#ifdef CFG_NAND_LEGACY
+ jffs2_free_cache(part_tmp);
+#endif
+ 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)) {
+ DEBUGF("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_dev)
+ curr_pi = jffs2_part_info(current_dev, current_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_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;
+ unsigned long size;
+ unsigned long 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 */
+ DEBUGF("'-': remaining size assigned\n");
+ size = SIZE_REMAINING;
+ p++;
+ } else {
+ size = memsize_parse(p, &p);
+ if (size < MIN_PART_SIZE) {
+ printf("partition size too small (%lx)\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%08lx@0x%08lx", size, offset);
+ part->auto_name = 1;
+ }
+
+ part->name[name_len - 1] = '\0';
+ INIT_LIST_HEAD(&part->link);
+
+ DEBUGF("+ partition: name %-22s size 0x%08x offset 0x%08x mask flags %d\n",
+ part->name, part->size,
+ part->offset, part->mask_flags);
+
+ *retpart = part;
+ return 0;
+}
+#endif/* #ifdef CONFIG_JFFS2_CMDLINE */
+
+/**
+ * Check device number to be within valid range for given device type.
+ *
+ * @param dev device to validate
+ * @return 0 if device is valid, 1 otherwise
+ */
+static int device_validate(u8 type, u8 num, u32 *size)
+{
+ if (type == MTD_DEV_TYPE_NOR) {
+#if defined(CONFIG_CMD_FLASH)
+ if (num < CFG_MAX_FLASH_BANKS) {
+ extern flash_info_t flash_info[];
+ *size = flash_info[num].size;
+
+ return 0;
+ }
+
+ printf("no such FLASH device: %s%d (valid range 0 ... %d\n",
+ MTD_DEV_TYPE(type), num, CFG_MAX_FLASH_BANKS - 1);
+#else
+ printf("support for FLASH devices not present\n");
+#endif
+ } else if (type == MTD_DEV_TYPE_NAND) {
+#if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND)
+ if (num < CFG_MAX_NAND_DEVICE) {
+#ifndef CFG_NAND_LEGACY
+ *size = nand_info[num].size;
+#else
+ extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE];
+ *size = nand_dev_desc[num].totlen;
+#endif
+ return 0;
+ }
+
+ printf("no such NAND device: %s%d (valid range 0 ... %d)\n",
+ MTD_DEV_TYPE(type), num, CFG_MAX_NAND_DEVICE - 1);
+#else
+ printf("support for NAND devices not present\n");
+#endif
+ }
+
+ return 1;
+}
+
+#ifdef CONFIG_JFFS2_CMDLINE
+/**
+ * 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_dev) {
+ /* we just deleted current device */
+ if (list_empty(&devices)) {
+ current_dev = NULL;
+ } else {
+ /* reset first partition from first dev from the
+ * devices list as current */
+ current_dev = list_entry(devices.next, struct mtd_device, link);
+ current_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
+ */
+static 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_dev = dev;
+ current_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, *pend;
+ LIST_HEAD(tmp_list);
+ struct list_head *entry, *n;
+ u16 num_parts;
+ u32 offset;
+ int err = 1;
+
+ p = mtd_dev;
+ *retdev = NULL;
+ *ret = NULL;
+
+ DEBUGF("===device_parse===\n");
+
+ /* fetch <mtd-id> */
+ mtd_id = p;
+ 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;
+ }
+
+ DEBUGF("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
+ id->type, MTD_DEV_TYPE(id->type),
+ id->num, id->mtd_id);
+ pend = strchr(p, ';');
+ DEBUGF("parsing partitions %.*s\n", (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;
+ }
+
+ DEBUGF("\ntotal partitions: %d\n", num_parts);
+
+ /* check for next device presence */
+ if (p) {
+ if (*p == ';') {
+ *ret = ++p;
+ } else if (*p == '\0') {
+ *ret = p;
+ } else {
+ printf("unexpected character '%c' at the end of device\n", *p);
+ *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;
+
+ DEBUGF("===\n\n");
+ return 0;
+}
+
+/**
+ * Initialize global device list.
+ *
+ * @return 0 on success, 1 otherwise
+ */
+static int devices_init(void)
+{
+ last_parts[0] = '\0';
+ current_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;
+
+ DEBUGF("--- 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);
+
+ DEBUGF("entry: '%s' (len = %d)\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;
+}
+#endif /* #ifdef CONFIG_JFFS2_CMDLINE */
+
+/**
+ * Parse device id string <dev-id> := 'nand'|'nor'<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 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 {
+ 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;
+}
+
+#ifdef CONFIG_JFFS2_CMDLINE
+/**
+ * Process all devices and generate corresponding mtdparts string describing
+ * all partitions on all devices.
+ *
+ * @param buf output buffer holding generated mtdparts string (output)
+ * @param buflen buffer size
+ * @return 0 on success, 1 otherwise
+ */
+static int generate_mtdparts(char *buf, u32 buflen)
+{
+ struct list_head *pentry, *dentry;
+ struct mtd_device *dev;
+ struct part_info *part, *prev_part;
+ char *p = buf;
+ char tmpbuf[32];
+ u32 size, offset, len, part_cnt;
+ u32 maxlen = buflen - 1;
+
+ DEBUGF("--- 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;
+}
+
+/**
+ * Format and print out a partition list for each device from global device
+ * list.
+ */
+static void list_partitions(void)
+{
+ struct list_head *dentry, *pentry;
+ struct part_info *part;
+ struct mtd_device *dev;
+ int part_num;
+
+ DEBUGF("\n---list_partitions---\n");
+ list_for_each(dentry, &devices) {
+ dev = list_entry(dentry, struct mtd_device, link);
+ 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\t\tsize\t\toffset\t\tmask_flags\n");
+
+ /* list partitions for given device */
+ part_num = 0;
+ list_for_each(pentry, &dev->parts) {
+ part = list_entry(pentry, struct part_info, link);
+ printf("%2d: %-20s0x%08x\t0x%08x\t%d\n",
+ part_num, part->name, part->size,
+ part->offset, part->mask_flags);
+
+ part_num++;
+ }
+ }
+ if (list_empty(&devices))
+ printf("no partitions defined\n");
+
+ /* current_dev is not NULL only when we have non empty device list */
+ if (current_dev) {
+ part = jffs2_part_info(current_dev, current_partnum);
+ if (part) {
+ printf("\nactive partition: %s%d,%d - (%s) 0x%08lx @ 0x%08lx\n",
+ MTD_DEV_TYPE(current_dev->id->type),
+ current_dev->id->num, current_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);
+ printf("mtdparts: %s\n", mtdparts_default);
+}
+
+/**
+ * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
+ * corresponding device and verify partition number.
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
+ * @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;
+
+ DEBUGF("--- 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 (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 = jffs2_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().
*
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * @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) {
+
+ DEBUGF("delete_partition: device = %s%d, partition %d = (%s) 0x%08lx@0x%08lx\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, reseting to null\n");
+ return 1;
+ }
+ return 0;
+ }
+
+ printf("partition %s not found\n", id);
+ return 1;
+}
+
+/**
+ * Accept character string describing mtd partitions and call device_parse()
+ * for each entry. Add created devices to the global devices list.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * @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;
-/*
- * Boot support
+ DEBUGF("\n---parse_mtdparts---\nmtdparts = %s\n\n", p);
+
+ /* delete all devices and partitions */
+ if (devices_init() != 0) {
+ printf("could not initialise device list\n");
+ return err;
+ }
+
+ /* re-read 'mtdparts' variable, devices_init may be updating env */
+ p = getenv("mtdparts");
+
+ 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;
+
+ DEBUGF("+ 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
*/
-#include <common.h>
-#include <command.h>
-#include <s_record.h>
-#include <jffs2/load_kernel.h>
-#include <net.h>
+static int parse_mtdids(const char *const ids)
+{
+ const char *p = ids;
+ const char *mtd_id;
+ int mtd_id_len;
+ struct mtdids *id;
+ struct list_head *entry, *n;
+ struct mtdids *id_tmp;
+ u8 type, num;
+ u32 size;
+ int ret = 1;
-#if (CONFIG_COMMANDS & CFG_CMD_JFFS2)
+ DEBUGF("\n---parse_mtdids---\nmtdids = %s\n\n", ids);
-#include <cramfs/cramfs_fs.h>
+ /* clean global mtdids list */
+ list_for_each_safe(entry, n, &mtdids) {
+ id_tmp = list_entry(entry, struct mtdids, link);
+ DEBUGF("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);
-extern int cramfs_check (struct part_info *info);
-extern int cramfs_load (char *loadoffset, struct part_info *info, char *filename);
-extern int cramfs_ls (struct part_info *info, char *filename);
-extern int cramfs_info (struct part_info *info);
+ while(p && (*p != '\0')) {
+
+ ret = 1;
+ /* parse 'nor'|'nand'<dev-num> */
+ if (id_parse(p, &p, &type, &num) != 0)
+ break;
+
+ if (*p != '=') {
+ printf("mtdids: incorrect <dev-num>\n");
+ break;
+ }
+ p++;
+
+ /* check if requested device exists */
+ if (device_validate(type, num, &size) != 0)
+ return 1;
-static int part_num=0;
+ /* 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);
-#ifndef CFG_JFFS_CUSTOM_PART
+ DEBUGF("+ id %s%d\t%16d bytes\t%s\n",
+ MTD_DEV_TYPE(id->type), id->num,
+ id->size, id->mtd_id);
-static struct part_info part;
+ 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;
+ }
-#ifndef CONFIG_JFFS2_NAND
+ return 0;
+}
-struct part_info*
-jffs2_part_info(int part_num)
+/**
+ * Parse and initialize global mtdids mapping and create global
+ * device/partition list.
+ *
+ * @return 0 on success, 1 otherwise
+ */
+int mtdparts_init(void)
{
- extern flash_info_t flash_info[]; /* info for FLASH chips */
- int i;
+ static int initialized = 0;
+ const char *ids, *parts;
+ const char *current_partition;
+ int ids_changed;
+ char tmp_ep[PARTITION_MAXLEN];
+
+ DEBUGF("\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");
+ parts = getenv("mtdparts");
+ 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);
+
+ DEBUGF("last_ids : %s\n", last_ids);
+ DEBUGF("env_ids : %s\n", ids);
+ DEBUGF("last_parts: %s\n", last_parts);
+ DEBUGF("env_parts : %s\n\n", parts);
+
+ DEBUGF("last_partition : %s\n", last_partition);
+ DEBUGF("env_partition : %s\n", current_partition);
+
+ /* if mtdids varible is empty try to use defaults */
+ if (!ids) {
+ if (mtdids_default) {
+ DEBUGF("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) {
+ 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_dev = list_entry(devices.next, struct mtd_device, link);
+ current_partnum = 0;
+ current_save();
+
+ DEBUGF("mtdparts_init: current_dev = %s%d, current_partnum = %d\n",
+ MTD_DEV_TYPE(current_dev->id->type),
+ current_dev->id->num, current_partnum);
+ }
+
+ /* mtdparts variable was reset to NULL, delete all devices/partitions */
+ if (!parts && (last_parts[0] != '\0'))
+ return 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;
+
+ DEBUGF("--- getting current partition: %s\n", tmp_ep);
+
+ if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) {
+ current_dev = cdev;
+ current_partnum = pnum;
+ current_save();
+ }
+ } else if (getenv("partition") == NULL) {
+ DEBUGF("no partition variable set, setting...\n");
+ current_save();
+ }
+
+ return 0;
+}
+#else /* #ifdef CONFIG_JFFS2_CMDLINE */
+/*
+ * 'Static' version of command line mtdparts_init() routine. Single partition on
+ * a single device configuration.
+ */
+
+/**
+ * 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;
+ u32 size;
+ char *dev_name;
+
+ DEBUGF("\n---mtdparts_init---\n");
+ if (!initialized) {
+ struct mtdids *id;
+ struct part_info *part;
- if(part_num==0){
+ initialized = 1;
+ current_dev = (struct mtd_device *)
+ malloc(sizeof(struct mtd_device) +
+ sizeof(struct part_info) +
+ sizeof(struct mtdids));
+ if (!current_dev) {
+ printf("out of memory\n");
+ return 1;
+ }
+ memset(current_dev, 0, sizeof(struct mtd_device) +
+ sizeof(struct part_info) + sizeof(struct mtdids));
- if(part.usr_priv==(void*)1)
- return ∂
+ id = (struct mtdids *)(current_dev + 1);
+ part = (struct part_info *)(id + 1);
- memset(&part, 0, sizeof(part));
+ /* id */
+ id->mtd_id = "single part";
-#if defined(CFG_JFFS2_FIRST_SECTOR)
- part.offset = (unsigned char *) flash_info[CFG_JFFS2_FIRST_BANK].start[CFG_JFFS2_FIRST_SECTOR];
+#if defined(CONFIG_JFFS2_DEV)
+ dev_name = CONFIG_JFFS2_DEV;
#else
- part.offset = (unsigned char *) flash_info[CFG_JFFS2_FIRST_BANK].start[0];
+ dev_name = "nor0";
#endif
- /* Figure out flash partition size */
- for (i = CFG_JFFS2_FIRST_BANK; i < CFG_JFFS2_NUM_BANKS+CFG_JFFS2_FIRST_BANK; i++)
- part.size += flash_info[i].size;
+ if ((id_parse(dev_name, NULL, &id->type, &id->num) != 0) ||
+ (device_validate(id->type, id->num, &size) != 0)) {
+ printf("incorrect device: %s%d\n", MTD_DEV_TYPE(id->type), id->num);
+ free(current_dev);
+ return 1;
+ }
+ id->size = size;
+ INIT_LIST_HEAD(&id->link);
+
+ DEBUGF("dev id: type = %d, num = %d, size = 0x%08lx, mtd_id = %s\n",
+ id->type, id->num, id->size, id->mtd_id);
+
+ /* partition */
+ part->name = "static";
+ part->auto_name = 0;
-#if defined(CFG_JFFS2_FIRST_SECTOR) && (CFG_JFFS2_FIRST_SECTOR > 0)
- part.size -=
- flash_info[CFG_JFFS2_FIRST_BANK].start[CFG_JFFS2_FIRST_SECTOR] -
- flash_info[CFG_JFFS2_FIRST_BANK].start[0];
+#if defined(CONFIG_JFFS2_PART_SIZE)
+ part->size = CONFIG_JFFS2_PART_SIZE;
+#else
+ part->size = SIZE_REMAINING;
+#endif
+
+#if defined(CONFIG_JFFS2_PART_OFFSET)
+ part->offset = CONFIG_JFFS2_PART_OFFSET;
+#else
+ part->offset = 0x00000000;
#endif
- /* unused in current jffs2 loader */
- part.erasesize = 0;
+ part->dev = current_dev;
+ INIT_LIST_HEAD(&part->link);
- /* Mark the struct as ready */
- part.usr_priv=(void*)1;
+ /* recalculate size if needed */
+ if (part->size == SIZE_REMAINING)
+ part->size = id->size - part->offset;
- return ∂
+ DEBUGF("part : name = %s, size = 0x%08lx, offset = 0x%08lx\n",
+ part->name, part->size, part->offset);
+
+ /* device */
+ current_dev->id = id;
+ INIT_LIST_HEAD(¤t_dev->link);
+ current_dev->num_parts = 1;
+ INIT_LIST_HEAD(¤t_dev->parts);
+ list_add(&part->link, ¤t_dev->parts);
}
+
return 0;
}
+#endif /* #ifdef CONFIG_JFFS2_CMDLINE */
-#else /* CONFIG_JFFS2_NAND */
-
-struct part_info*
-jffs2_part_info(int part_num)
+/**
+ * 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* jffs2_part_info(struct mtd_device *dev, unsigned int part_num)
{
- if(part_num==0){
+ struct list_head *entry;
+ struct part_info *part;
+ int num;
- if(part.usr_priv==(void*)1)
- return ∂
+ if (!dev)
+ return NULL;
- memset(&part, 0, sizeof(part));
+ DEBUGF("\n--- jffs2_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);
- part.offset = (char *)CONFIG_JFFS2_NAND_OFF;
- part.size = CONFIG_JFFS2_NAND_SIZE; /* the bigger size the slower jffs2 */
+ 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;
+ }
-#ifndef CONFIG_JFFS2_NAND_DEV
-#define CONFIG_JFFS2_NAND_DEV 0
-#endif
- /* nand device with the JFFS2 parition plus 1 */
- part.usr_priv = (void*)(CONFIG_JFFS2_NAND_DEV+1);
- return ∂
+ /* 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 0;
+
+ return NULL;
}
-#endif /* CONFIG_JFFS2_NAND */
-#endif /* ifndef CFG_JFFS_CUSTOM_PART */
+/***************************************************/
+/* U-boot commands */
+/***************************************************/
-int
-do_jffs2_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+/**
+ * Routine implementing fsload u-boot command. This routine tries to load
+ * a requested file from jffs2/cramfs filesystem on a current partition.
+ *
+ * @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
+ */
+int do_jffs2_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
- struct part_info* jffs2_part_info(int);
- int jffs2_1pass_load(char *, struct part_info *,const char *);
char *fsname;
char *filename;
int size;
filename = argv[2];
}
- if (0 != (part=jffs2_part_info(part_num))){
+ /* make sure we are in sync with env variables */
+ if (mtdparts_init() !=0)
+ return 1;
+
+ if ((part = jffs2_part_info(current_dev, current_partnum))){
/* check partition type for cramfs */
fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2");
return !(size > 0);
}
- puts ("Active partition not valid\n");
- return 0;
+ return 1;
}
-int
-do_jffs2_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+/**
+ * Routine implementing u-boot ls command which lists content of a given
+ * directory on a current partition.
+ *
+ * @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
+ */
+int do_jffs2_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
- struct part_info* jffs2_part_info(int);
- int jffs2_1pass_ls(struct part_info *,char *);
-
- char *filename = "/";
+ char *filename = "/";
int ret;
struct part_info *part;
if (argc == 2)
filename = argv[1];
- if (0 != (part=jffs2_part_info(part_num))){
+ /* make sure we are in sync with env variables */
+ if (mtdparts_init() !=0)
+ return 1;
+
+ if ((part = jffs2_part_info(current_dev, current_partnum))){
/* check partition type for cramfs */
if (cramfs_check(part)) {
ret = jffs2_1pass_ls(part, filename);
}
- return (ret == 1);
+ return ret ? 0 : 1;
}
- puts ("Active partition not valid\n");
- return 0;
+ return 1;
}
-int
-do_jffs2_fsinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+/**
+ * Routine implementing u-boot fsinfo command. This routine prints out
+ * miscellaneous filesystem informations/statistics.
+ *
+ * @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
+ */
+int do_jffs2_fsinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
- struct part_info* jffs2_part_info(int);
- int jffs2_1pass_info(struct part_info *);
struct part_info *part;
char *fsname;
int ret;
- if ((part=jffs2_part_info(part_num))){
+ /* make sure we are in sync with env variables */
+ if (mtdparts_init() !=0)
+ return 1;
+
+ if ((part = jffs2_part_info(current_dev, current_partnum))){
/* check partition type for cramfs */
fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2");
ret = jffs2_1pass_info(part);
}
- return (ret == 1);
+ return ret ? 0 : 1;
+ }
+ return 1;
+}
+
+/* command line only */
+#ifdef CONFIG_JFFS2_CMDLINE
+/**
+ * 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
+ */
+int do_jffs2_chpart(cmd_tbl_t *cmdtp, int flag, int argc, char *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;
}
- puts ("Active partition not valid\n");
+
+ if (find_dev_and_part(argv[1], &dev, &pnum, &part) != 0)
+ return 1;
+
+ current_dev = dev;
+ current_partnum = pnum;
+ current_save();
+
+ printf("partition changed to %s%d,%d\n",
+ MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum);
+
return 0;
}
-int
-do_jffs2_chpart(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+/**
+ * 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
+ */
+int do_jffs2_mtdparts(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
- int tmp_part;
- char str_part_num[3];
- struct part_info* jffs2_part_info(int);
+ if (argc == 2) {
+ if (strcmp(argv[1], "default") == 0) {
+ setenv("mtdids", (char *)mtdids_default);
+ setenv("mtdparts", (char *)mtdparts_default);
+ setenv("partition", NULL);
- if (argc >= 2) {
- tmp_part = simple_strtoul(argv[1], NULL, 16);
- }else{
- puts ("Need partition number in argument list\n");
- return 0;
+ 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);
+ /* devices_init() calls current_save() */
+ return devices_init();
+ }
}
- if (jffs2_part_info(tmp_part)){
- printf("Partition changed to %d\n",tmp_part);
- part_num=tmp_part;
- sprintf(str_part_num, "%d", part_num);
- setenv("partition", str_part_num);
+ /* make sure we are in sync with env variables */
+ if (mtdparts_init() != 0)
+ return 1;
+
+ if (argc == 1) {
+ list_partitions();
return 0;
}
- printf("Partition %d is not valid partiton\n",tmp_part);
- return 0;
+ /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
+ if (((argc == 5) || (argc == 6)) && (strcmp(argv[1], "add") == 0)) {
+#define PART_ADD_DESC_MAXLEN 64
+ char tmpbuf[PART_ADD_DESC_MAXLEN];
+ u8 type, num, len;
+ struct mtd_device *dev;
+ struct mtd_device *dev_tmp;
+ struct mtdids *id;
+ struct part_info *p;
+
+ if (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] : "");
+ DEBUGF("add tmpbuf: %s\n", tmpbuf);
+
+ if ((device_parse(tmpbuf, NULL, &dev) != 0) || (!dev))
+ return 1;
+
+ DEBUGF("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
+ dev->id->num, dev->id->mtd_id);
+
+ if ((dev_tmp = device_find(dev->id->type, dev->id->num)) == NULL) {
+ device_add(dev);
+ } else {
+ /* merge new partition with existing ones*/
+ p = list_entry(dev->parts.next, struct part_info, link);
+ if (part_add(dev_tmp, p) != 0) {
+ device_del(dev);
+ return 1;
+ }
+ }
+
+ if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
+ printf("generated mtdparts too long, reseting to null\n");
+ return 1;
+ }
+ return 0;
+ }
+
+ /* mtdparts del part-id */
+ if ((argc == 3) && (strcmp(argv[1], "del") == 0)) {
+ DEBUGF("del: part-id = %s\n", argv[2]);
+
+ return delete_partition(argv[2]);
+ }
+
+ printf ("Usage:\n%s\n", cmdtp->usage);
+ return 1;
}
+#endif /* #ifdef CONFIG_JFFS2_CMDLINE */
/***************************************************/
-
U_BOOT_CMD(
fsload, 3, 0, do_jffs2_fsload,
"fsload\t- load binary file from a filesystem image\n",
" - load binary file from flash bank\n"
" with offset 'off'\n"
);
+U_BOOT_CMD(
+ ls, 2, 1, do_jffs2_ls,
+ "ls\t- list files in a directory (default /)\n",
+ "[ directory ]\n"
+ " - list files in a directory.\n"
+);
U_BOOT_CMD(
fsinfo, 1, 1, do_jffs2_fsinfo,
" - print information about filesystems\n"
);
+#ifdef CONFIG_JFFS2_CMDLINE
U_BOOT_CMD(
- ls, 2, 1, do_jffs2_ls,
- "ls\t- list files in a directory (default /)\n",
- "[ directory ]\n"
- " - list files in a directory.\n"
+ chpart, 2, 0, do_jffs2_chpart,
+ "chpart\t- change active partition\n",
+ "part-id\n"
+ " - change active partition (e.g. part-id = nand0,1)\n"
);
U_BOOT_CMD(
- chpart, 2, 0, do_jffs2_chpart,
- "chpart\t- change active partition\n",
- " - change active partition\n"
+ mtdparts, 6, 0, do_jffs2_mtdparts,
+ "mtdparts- define flash/nand partitions\n",
+ "\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"
+ "mtdparts default\n"
+ " - reset partition table to defaults\n\n"
+ "-----\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'<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)\n"
);
+#endif /* #ifdef CONFIG_JFFS2_CMDLINE */
+
+/***************************************************/
-#endif /* CFG_CMD_JFFS2 */
+#endif
projects / karo-tx-uboot.git / blobdiff