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Diffstat (limited to 'cmd/jffs2.c')
| -rw-r--r-- | cmd/jffs2.c | 619 |
1 files changed, 619 insertions, 0 deletions
diff --git a/cmd/jffs2.c b/cmd/jffs2.c new file mode 100644 index 0000000..bce0983 --- /dev/null +++ b/cmd/jffs2.c @@ -0,0 +1,619 @@ +/* + * (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. + * + * $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) + * + */ + +/* + * JFFS2/CRAMFS support + */ +#include <common.h> +#include <command.h> +#include <malloc.h> +#include <jffs2/jffs2.h> +#include <linux/list.h> +#include <linux/ctype.h> +#include <cramfs/cramfs_fs.h> + +#if defined(CONFIG_CMD_NAND) +#include <linux/mtd/nand.h> +#include <nand.h> +#endif + +#if defined(CONFIG_CMD_ONENAND) +#include <linux/mtd/mtd.h> +#include <linux/mtd/onenand.h> +#include <onenand_uboot.h> +#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 + +/* current active device and partition number */ +#ifdef CONFIG_CMD_MTDPARTS +/* Use the ones declared in cmd_mtdparts.c */ +extern struct mtd_device *current_mtd_dev; +extern u8 current_mtd_partnum; +#else +/* Use local ones */ +struct mtd_device *current_mtd_dev = NULL; +u8 current_mtd_partnum = 0; +#endif + +#if defined(CONFIG_CMD_CRAMFS) +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); +#else +/* defining empty macros for function names is ugly but avoids ifdef clutter + * all over the code */ +#define cramfs_check(x) (0) +#define cramfs_load(x,y,z) (-1) +#define cramfs_ls(x,y) (0) +#define cramfs_info(x) (0) +#endif + +#ifndef CONFIG_CMD_MTDPARTS +/** + * 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 mtd_device_validate(u8 type, u8 num, u32 *size) +{ + if (type == MTD_DEV_TYPE_NOR) { +#if defined(CONFIG_CMD_FLASH) + if (num < CONFIG_SYS_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, CONFIG_SYS_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 < CONFIG_SYS_MAX_NAND_DEVICE) { + *size = nand_info[num].size; + return 0; + } + + printf("no such NAND device: %s%d (valid range 0 ... %d)\n", + MTD_DEV_TYPE(type), num, CONFIG_SYS_MAX_NAND_DEVICE - 1); +#else + printf("support for NAND devices not present\n"); +#endif + } else if (type == MTD_DEV_TYPE_ONENAND) { +#if defined(CONFIG_CMD_ONENAND) + *size = onenand_mtd.size; + return 0; +#else + printf("support for OneNAND devices not present\n"); +#endif + } else + printf("Unknown defice type %d\n", type); + + return 1; +} + +/** + * 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 + */ +static 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; +} + +/* + * 'Static' version of command line mtdparts_init() routine. Single partition on + * a single device configuration. + */ + +/** + * Calculate sector size. + * + * @return sector size + */ +static inline u32 get_part_sector_size_nand(struct mtdids *id) +{ +#if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND) + nand_info_t *nand; + + nand = &nand_info[id->num]; + + return nand->erasesize; +#else + BUG(); + return 0; +#endif +} + +static inline u32 get_part_sector_size_nor(struct mtdids *id, struct part_info *part) +{ +#if defined(CONFIG_CMD_FLASH) + extern flash_info_t flash_info[]; + + u32 end_phys, start_phys, sector_size = 0, size = 0; + int i; + flash_info_t *flash; + + flash = &flash_info[id->num]; + + start_phys = flash->start[0] + part->offset; + end_phys = start_phys + part->size - 1; + + for (i = 0; i < flash->sector_count; i++) { + if (flash->start[i] >= end_phys) + break; + + if (flash->start[i] >= start_phys) { + if (i == flash->sector_count - 1) { + size = flash->start[0] + flash->size - flash->start[i]; + } else { + size = flash->start[i+1] - flash->start[i]; + } + + if (sector_size < size) + sector_size = size; + } + } + + return sector_size; +#else + BUG(); + return 0; +#endif +} + +static inline u32 get_part_sector_size_onenand(void) +{ +#if defined(CONFIG_CMD_ONENAND) + struct mtd_info *mtd; + + mtd = &onenand_mtd; + + return mtd->erasesize; +#else + BUG(); + return 0; +#endif +} + +static inline u32 get_part_sector_size(struct mtdids *id, struct part_info *part) +{ + if (id->type == MTD_DEV_TYPE_NAND) + return get_part_sector_size_nand(id); + else if (id->type == MTD_DEV_TYPE_NOR) + return get_part_sector_size_nor(id, part); + else if (id->type == MTD_DEV_TYPE_ONENAND) + return get_part_sector_size_onenand(); + else + DEBUGF("Error: Unknown device type.\n"); + + return 0; +} + +/** + * Parse and initialize global mtdids mapping and create global + * device/partition list. + * + * 'Static' version of command line mtdparts_init() routine. Single partition on + * a single device configuration. + * + * @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; + + initialized = 1; + current_mtd_dev = (struct mtd_device *) + malloc(sizeof(struct mtd_device) + + sizeof(struct part_info) + + sizeof(struct mtdids)); + if (!current_mtd_dev) { + printf("out of memory\n"); + return 1; + } + memset(current_mtd_dev, 0, sizeof(struct mtd_device) + + sizeof(struct part_info) + sizeof(struct mtdids)); + + id = (struct mtdids *)(current_mtd_dev + 1); + part = (struct part_info *)(id + 1); + + /* id */ + id->mtd_id = "single part"; + +#if defined(CONFIG_JFFS2_DEV) + dev_name = CONFIG_JFFS2_DEV; +#else + dev_name = "nor0"; +#endif + + if ((mtd_id_parse(dev_name, NULL, &id->type, &id->num) != 0) || + (mtd_device_validate(id->type, id->num, &size) != 0)) { + printf("incorrect device: %s%d\n", MTD_DEV_TYPE(id->type), id->num); + free(current_mtd_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(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 + + part->dev = current_mtd_dev; + INIT_LIST_HEAD(&part->link); + + /* recalculate size if needed */ + if (part->size == SIZE_REMAINING) + part->size = id->size - part->offset; + + part->sector_size = get_part_sector_size(id, part); + + DEBUGF("part : name = %s, size = 0x%08lx, offset = 0x%08lx\n", + part->name, part->size, part->offset); + + /* device */ + current_mtd_dev->id = id; + INIT_LIST_HEAD(¤t_mtd_dev->link); + current_mtd_dev->num_parts = 1; + INIT_LIST_HEAD(¤t_mtd_dev->parts); + list_add(&part->link, ¤t_mtd_dev->parts); + } + + return 0; +} +#endif /* #ifndef CONFIG_CMD_MTDPARTS */ + +/** + * 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) +{ + struct list_head *entry; + struct part_info *part; + int num; + + if (!dev) + return NULL; + + 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); + + 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 */ +/***************************************************/ + +/** + * 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 * const argv[]) +{ + char *fsname; + char *filename; + int size; + struct part_info *part; + ulong offset = load_addr; + + /* pre-set Boot file name */ + if ((filename = getenv("bootfile")) == NULL) { + filename = "uImage"; + } + + if (argc == 2) { + filename = argv[1]; + } + if (argc == 3) { + offset = simple_strtoul(argv[1], NULL, 16); + load_addr = offset; + filename = argv[2]; + } + + /* make sure we are in sync with env variables */ + if (mtdparts_init() !=0) + return 1; + + if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){ + + /* check partition type for cramfs */ + fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2"); + printf("### %s loading '%s' to 0x%lx\n", fsname, filename, offset); + + if (cramfs_check(part)) { + size = cramfs_load ((char *) offset, part, filename); + } else { + /* if this is not cramfs assume jffs2 */ + size = jffs2_1pass_load((char *)offset, part, filename); + } + + if (size > 0) { + printf("### %s load complete: %d bytes loaded to 0x%lx\n", + fsname, size, offset); + setenv_hex("filesize", size); + } else { + printf("### %s LOAD ERROR<%x> for %s!\n", fsname, size, filename); + } + + return !(size > 0); + } + return 1; +} + +/** + * 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 * const argv[]) +{ + char *filename = "/"; + int ret; + struct part_info *part; + + if (argc == 2) + filename = argv[1]; + + /* make sure we are in sync with env variables */ + if (mtdparts_init() !=0) + return 1; + + if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){ + + /* check partition type for cramfs */ + if (cramfs_check(part)) { + ret = cramfs_ls (part, filename); + } else { + /* if this is not cramfs assume jffs2 */ + ret = jffs2_1pass_ls(part, filename); + } + + return ret ? 0 : 1; + } + return 1; +} + +/** + * 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 * const argv[]) +{ + struct part_info *part; + char *fsname; + int ret; + + /* make sure we are in sync with env variables */ + if (mtdparts_init() !=0) + return 1; + + if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){ + + /* check partition type for cramfs */ + fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2"); + printf("### filesystem type is %s\n", fsname); + + if (cramfs_check(part)) { + ret = cramfs_info (part); + } else { + /* if this is not cramfs assume jffs2 */ + ret = jffs2_1pass_info(part); + } + + return ret ? 0 : 1; + } + return 1; +} + +/***************************************************/ +U_BOOT_CMD( + fsload, 3, 0, do_jffs2_fsload, + "load binary file from a filesystem image", + "[ off ] [ filename ]\n" + " - load binary file from flash bank\n" + " with offset 'off'" +); +U_BOOT_CMD( + ls, 2, 1, do_jffs2_ls, + "list files in a directory (default /)", + "[ directory ]" +); + +U_BOOT_CMD( + fsinfo, 1, 1, do_jffs2_fsinfo, + "print information about filesystems", + "" +); +/***************************************************/ |