diff options
Diffstat (limited to 'cmd/ubi.c')
| -rw-r--r-- | cmd/ubi.c | 685 |
1 files changed, 685 insertions, 0 deletions
diff --git a/cmd/ubi.c b/cmd/ubi.c new file mode 100644 index 0000000..753a4db --- /dev/null +++ b/cmd/ubi.c @@ -0,0 +1,685 @@ +/* + * Unsorted Block Image commands + * + * Copyright (C) 2008 Samsung Electronics + * Kyungmin Park <kyungmin.park@samsung.com> + * + * Copyright 2008-2009 Stefan Roese <sr@denx.de>, DENX Software Engineering + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <common.h> +#include <command.h> +#include <exports.h> +#include <memalign.h> +#include <nand.h> +#include <onenand_uboot.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <linux/err.h> +#include <ubi_uboot.h> +#include <asm/errno.h> +#include <jffs2/load_kernel.h> + +#undef ubi_msg +#define ubi_msg(fmt, ...) printf("UBI: " fmt "\n", ##__VA_ARGS__) + +#define DEV_TYPE_NONE 0 +#define DEV_TYPE_NAND 1 +#define DEV_TYPE_ONENAND 2 +#define DEV_TYPE_NOR 3 + +/* Private own data */ +static struct ubi_device *ubi; +static char buffer[80]; +static int ubi_initialized; + +struct selected_dev { + char part_name[80]; + int selected; + int nr; + struct mtd_info *mtd_info; +}; + +static struct selected_dev ubi_dev; + +#ifdef CONFIG_CMD_UBIFS +int ubifs_is_mounted(void); +void cmd_ubifs_umount(void); +#endif + +static void display_volume_info(struct ubi_device *ubi) +{ + int i; + + for (i = 0; i < (ubi->vtbl_slots + 1); i++) { + if (!ubi->volumes[i]) + continue; /* Empty record */ + ubi_dump_vol_info(ubi->volumes[i]); + } +} + +static void display_ubi_info(struct ubi_device *ubi) +{ + ubi_msg("MTD device name: \"%s\"", ubi->mtd->name); + ubi_msg("MTD device size: %llu MiB", ubi->flash_size >> 20); + ubi_msg("physical eraseblock size: %d bytes (%d KiB)", + ubi->peb_size, ubi->peb_size >> 10); + ubi_msg("logical eraseblock size: %d bytes", ubi->leb_size); + ubi_msg("number of good PEBs: %d", ubi->good_peb_count); + ubi_msg("number of bad PEBs: %d", ubi->bad_peb_count); + ubi_msg("smallest flash I/O unit: %d", ubi->min_io_size); + ubi_msg("VID header offset: %d (aligned %d)", + ubi->vid_hdr_offset, ubi->vid_hdr_aloffset); + ubi_msg("data offset: %d", ubi->leb_start); + ubi_msg("max. allowed volumes: %d", ubi->vtbl_slots); + ubi_msg("wear-leveling threshold: %d", CONFIG_MTD_UBI_WL_THRESHOLD); + ubi_msg("number of internal volumes: %d", UBI_INT_VOL_COUNT); + ubi_msg("number of user volumes: %d", + ubi->vol_count - UBI_INT_VOL_COUNT); + ubi_msg("available PEBs: %d", ubi->avail_pebs); + ubi_msg("total number of reserved PEBs: %d", ubi->rsvd_pebs); + ubi_msg("number of PEBs reserved for bad PEB handling: %d", + ubi->beb_rsvd_pebs); + ubi_msg("max/mean erase counter: %d/%d", ubi->max_ec, ubi->mean_ec); +} + +static int ubi_info(int layout) +{ + if (layout) + display_volume_info(ubi); + else + display_ubi_info(ubi); + + return 0; +} + +static int ubi_check_volumename(const struct ubi_volume *vol, char *name) +{ + return strcmp(vol->name, name); +} + +static int ubi_check(char *name) +{ + int i; + + for (i = 0; i < (ubi->vtbl_slots + 1); i++) { + if (!ubi->volumes[i]) + continue; /* Empty record */ + + if (!ubi_check_volumename(ubi->volumes[i], name)) + return 0; + } + + return 1; +} + + +static int verify_mkvol_req(const struct ubi_device *ubi, + const struct ubi_mkvol_req *req) +{ + int n, err = EINVAL; + + if (req->bytes < 0 || req->alignment < 0 || req->vol_type < 0 || + req->name_len < 0) + goto bad; + + if ((req->vol_id < 0 || req->vol_id >= ubi->vtbl_slots) && + req->vol_id != UBI_VOL_NUM_AUTO) + goto bad; + + if (req->alignment == 0) + goto bad; + + if (req->bytes == 0) { + printf("No space left in UBI device!\n"); + err = ENOMEM; + goto bad; + } + + if (req->vol_type != UBI_DYNAMIC_VOLUME && + req->vol_type != UBI_STATIC_VOLUME) + goto bad; + + if (req->alignment > ubi->leb_size) + goto bad; + + n = req->alignment % ubi->min_io_size; + if (req->alignment != 1 && n) + goto bad; + + if (req->name_len > UBI_VOL_NAME_MAX) { + printf("Name too long!\n"); + err = ENAMETOOLONG; + goto bad; + } + + return 0; +bad: + return err; +} + +static int ubi_create_vol(char *volume, int64_t size, int dynamic) +{ + struct ubi_mkvol_req req; + int err; + + if (dynamic) + req.vol_type = UBI_DYNAMIC_VOLUME; + else + req.vol_type = UBI_STATIC_VOLUME; + + req.vol_id = UBI_VOL_NUM_AUTO; + req.alignment = 1; + req.bytes = size; + + strcpy(req.name, volume); + req.name_len = strlen(volume); + req.name[req.name_len] = '\0'; + req.padding1 = 0; + /* It's duplicated at drivers/mtd/ubi/cdev.c */ + err = verify_mkvol_req(ubi, &req); + if (err) { + printf("verify_mkvol_req failed %d\n", err); + return err; + } + printf("Creating %s volume %s of size %lld\n", + dynamic ? "dynamic" : "static", volume, size); + /* Call real ubi create volume */ + return ubi_create_volume(ubi, &req); +} + +static struct ubi_volume *ubi_find_volume(char *volume) +{ + struct ubi_volume *vol = NULL; + int i; + + for (i = 0; i < ubi->vtbl_slots; i++) { + vol = ubi->volumes[i]; + if (vol && !strcmp(vol->name, volume)) + return vol; + } + + printf("Volume %s not found!\n", volume); + return NULL; +} + +static int ubi_remove_vol(char *volume) +{ + int err, reserved_pebs, i; + struct ubi_volume *vol; + + vol = ubi_find_volume(volume); + if (vol == NULL) + return ENODEV; + + printf("Remove UBI volume %s (id %d)\n", vol->name, vol->vol_id); + + if (ubi->ro_mode) { + printf("It's read-only mode\n"); + err = EROFS; + goto out_err; + } + + err = ubi_change_vtbl_record(ubi, vol->vol_id, NULL); + if (err) { + printf("Error changing Vol tabel record err=%x\n", err); + goto out_err; + } + reserved_pebs = vol->reserved_pebs; + for (i = 0; i < vol->reserved_pebs; i++) { + err = ubi_eba_unmap_leb(ubi, vol, i); + if (err) + goto out_err; + } + + kfree(vol->eba_tbl); + ubi->volumes[vol->vol_id]->eba_tbl = NULL; + ubi->volumes[vol->vol_id] = NULL; + + ubi->rsvd_pebs -= reserved_pebs; + ubi->avail_pebs += reserved_pebs; + i = ubi->beb_rsvd_level - ubi->beb_rsvd_pebs; + if (i > 0) { + i = ubi->avail_pebs >= i ? i : ubi->avail_pebs; + ubi->avail_pebs -= i; + ubi->rsvd_pebs += i; + ubi->beb_rsvd_pebs += i; + if (i > 0) + ubi_msg("reserve more %d PEBs", i); + } + ubi->vol_count -= 1; + + return 0; +out_err: + ubi_err(ubi, "cannot remove volume %s, error %d", volume, err); + if (err < 0) + err = -err; + return err; +} + +static int ubi_volume_continue_write(char *volume, void *buf, size_t size) +{ + int err = 1; + struct ubi_volume *vol; + + vol = ubi_find_volume(volume); + if (vol == NULL) + return ENODEV; + + err = ubi_more_update_data(ubi, vol, buf, size); + if (err < 0) { + printf("Couldnt or partially wrote data\n"); + return -err; + } + + if (err) { + size = err; + + err = ubi_check_volume(ubi, vol->vol_id); + if (err < 0) + return -err; + + if (err) { + ubi_warn(ubi, "volume %d on UBI device %d is corrupt", + vol->vol_id, ubi->ubi_num); + vol->corrupted = 1; + } + + vol->checked = 1; + ubi_gluebi_updated(vol); + } + + return 0; +} + +int ubi_volume_begin_write(char *volume, void *buf, size_t size, + size_t full_size) +{ + int err = 1; + int rsvd_bytes = 0; + struct ubi_volume *vol; + + vol = ubi_find_volume(volume); + if (vol == NULL) + return ENODEV; + + rsvd_bytes = vol->reserved_pebs * (ubi->leb_size - vol->data_pad); + if (size < 0 || size > rsvd_bytes) { + printf("size > volume size! Aborting!\n"); + return EINVAL; + } + + err = ubi_start_update(ubi, vol, full_size); + if (err < 0) { + printf("Cannot start volume update\n"); + return -err; + } + + return ubi_volume_continue_write(volume, buf, size); +} + +int ubi_volume_write(char *volume, void *buf, size_t size) +{ + return ubi_volume_begin_write(volume, buf, size, size); +} + +int ubi_volume_read(char *volume, char *buf, size_t size) +{ + int err, lnum, off, len, tbuf_size; + void *tbuf; + unsigned long long tmp; + struct ubi_volume *vol; + loff_t offp = 0; + + vol = ubi_find_volume(volume); + if (vol == NULL) + return ENODEV; + + if (vol->updating) { + printf("updating"); + return EBUSY; + } + if (vol->upd_marker) { + printf("damaged volume, update marker is set"); + return EBADF; + } + if (offp == vol->used_bytes) + return 0; + + if (size == 0) { + printf("No size specified -> Using max size (%lld)\n", vol->used_bytes); + size = vol->used_bytes; + } + + if (vol->corrupted) + printf("read from corrupted volume %d", vol->vol_id); + if (offp + size > vol->used_bytes) + size = vol->used_bytes - offp; + + tbuf_size = vol->usable_leb_size; + if (size < tbuf_size) + tbuf_size = ALIGN(size, ubi->min_io_size); + tbuf = malloc_cache_aligned(tbuf_size); + if (!tbuf) { + printf("NO MEM\n"); + return ENOMEM; + } + len = size > tbuf_size ? tbuf_size : size; + + tmp = offp; + off = do_div(tmp, vol->usable_leb_size); + lnum = tmp; + do { + if (off + len >= vol->usable_leb_size) + len = vol->usable_leb_size - off; + + err = ubi_eba_read_leb(ubi, vol, lnum, tbuf, off, len, 0); + if (err) { + printf("read err %x\n", err); + err = -err; + break; + } + off += len; + if (off == vol->usable_leb_size) { + lnum += 1; + off -= vol->usable_leb_size; + } + + size -= len; + offp += len; + + memcpy(buf, tbuf, len); + + buf += len; + len = size > tbuf_size ? tbuf_size : size; + } while (size); + + free(tbuf); + return err; +} + +static int ubi_dev_scan(struct mtd_info *info, char *ubidev, + const char *vid_header_offset) +{ + struct mtd_device *dev; + struct part_info *part; + struct mtd_partition mtd_part; + char ubi_mtd_param_buffer[80]; + u8 pnum; + int err; + + if (find_dev_and_part(ubidev, &dev, &pnum, &part) != 0) + return 1; + + sprintf(buffer, "mtd=%d", pnum); + memset(&mtd_part, 0, sizeof(mtd_part)); + mtd_part.name = buffer; + mtd_part.size = part->size; + mtd_part.offset = part->offset; + add_mtd_partitions(info, &mtd_part, 1); + + strcpy(ubi_mtd_param_buffer, buffer); + if (vid_header_offset) + sprintf(ubi_mtd_param_buffer, "mtd=%d,%s", pnum, + vid_header_offset); + err = ubi_mtd_param_parse(ubi_mtd_param_buffer, NULL); + if (err) { + del_mtd_partitions(info); + return -err; + } + + err = ubi_init(); + if (err) { + del_mtd_partitions(info); + return -err; + } + + ubi_initialized = 1; + + return 0; +} + +int ubi_part(char *part_name, const char *vid_header_offset) +{ + int err = 0; + char mtd_dev[16]; + struct mtd_device *dev; + struct part_info *part; + u8 pnum; + + if (mtdparts_init() != 0) { + printf("Error initializing mtdparts!\n"); + return 1; + } + +#ifdef CONFIG_CMD_UBIFS + /* + * Automatically unmount UBIFS partition when user + * changes the UBI device. Otherwise the following + * UBIFS commands will crash. + */ + if (ubifs_is_mounted()) + cmd_ubifs_umount(); +#endif + + /* todo: get dev number for NAND... */ + ubi_dev.nr = 0; + + /* + * Call ubi_exit() before re-initializing the UBI subsystem + */ + if (ubi_initialized) { + ubi_exit(); + del_mtd_partitions(ubi_dev.mtd_info); + } + + /* + * Search the mtd device number where this partition + * is located + */ + if (find_dev_and_part(part_name, &dev, &pnum, &part)) { + printf("Partition %s not found!\n", part_name); + return 1; + } + sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(dev->id->type), dev->id->num); + ubi_dev.mtd_info = get_mtd_device_nm(mtd_dev); + if (IS_ERR(ubi_dev.mtd_info)) { + printf("Partition %s not found on device %s!\n", part_name, + mtd_dev); + return 1; + } + + ubi_dev.selected = 1; + + strcpy(ubi_dev.part_name, part_name); + err = ubi_dev_scan(ubi_dev.mtd_info, ubi_dev.part_name, + vid_header_offset); + if (err) { + printf("UBI init error %d\n", err); + ubi_dev.selected = 0; + return err; + } + + ubi = ubi_devices[0]; + + return 0; +} + +static int do_ubi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + int64_t size = 0; + ulong addr = 0; + + if (argc < 2) + return CMD_RET_USAGE; + + if (strcmp(argv[1], "part") == 0) { + const char *vid_header_offset = NULL; + + /* Print current partition */ + if (argc == 2) { + if (!ubi_dev.selected) { + printf("Error, no UBI device/partition selected!\n"); + return 1; + } + + printf("Device %d: %s, partition %s\n", + ubi_dev.nr, ubi_dev.mtd_info->name, ubi_dev.part_name); + return 0; + } + + if (argc < 3) + return CMD_RET_USAGE; + + if (argc > 3) + vid_header_offset = argv[3]; + + return ubi_part(argv[2], vid_header_offset); + } + + if ((strcmp(argv[1], "part") != 0) && (!ubi_dev.selected)) { + printf("Error, no UBI device/partition selected!\n"); + return 1; + } + + if (strcmp(argv[1], "info") == 0) { + int layout = 0; + if (argc > 2 && !strncmp(argv[2], "l", 1)) + layout = 1; + return ubi_info(layout); + } + + if (strcmp(argv[1], "check") == 0) { + if (argc > 2) + return ubi_check(argv[2]); + + printf("Error, no volume name passed\n"); + return 1; + } + + if (strncmp(argv[1], "create", 6) == 0) { + int dynamic = 1; /* default: dynamic volume */ + + /* Use maximum available size */ + size = 0; + + /* E.g., create volume size type */ + if (argc == 5) { + if (strncmp(argv[4], "s", 1) == 0) + dynamic = 0; + else if (strncmp(argv[4], "d", 1) != 0) { + printf("Incorrect type\n"); + return 1; + } + argc--; + } + /* E.g., create volume size */ + if (argc == 4) { + size = simple_strtoull(argv[3], NULL, 16); + argc--; + } + /* Use maximum available size */ + if (!size) { + size = (int64_t)ubi->avail_pebs * ubi->leb_size; + printf("No size specified -> Using max size (%lld)\n", size); + } + /* E.g., create volume */ + if (argc == 3) + return ubi_create_vol(argv[2], size, dynamic); + } + + if (strncmp(argv[1], "remove", 6) == 0) { + /* E.g., remove volume */ + if (argc == 3) + return ubi_remove_vol(argv[2]); + } + + if (strncmp(argv[1], "write", 5) == 0) { + int ret; + + if (argc < 5) { + printf("Please see usage\n"); + return 1; + } + + addr = simple_strtoul(argv[2], NULL, 16); + size = simple_strtoul(argv[4], NULL, 16); + + if (strlen(argv[1]) == 10 && + strncmp(argv[1] + 5, ".part", 5) == 0) { + if (argc < 6) { + ret = ubi_volume_continue_write(argv[3], + (void *)addr, size); + } else { + size_t full_size; + full_size = simple_strtoul(argv[5], NULL, 16); + ret = ubi_volume_begin_write(argv[3], + (void *)addr, size, full_size); + } + } else { + ret = ubi_volume_write(argv[3], (void *)addr, size); + } + if (!ret) { + printf("%lld bytes written to volume %s\n", size, + argv[3]); + } + + return ret; + } + + if (strncmp(argv[1], "read", 4) == 0) { + size = 0; + + /* E.g., read volume size */ + if (argc == 5) { + size = simple_strtoul(argv[4], NULL, 16); + argc--; + } + + /* E.g., read volume */ + if (argc == 4) { + addr = simple_strtoul(argv[2], NULL, 16); + argc--; + } + + if (argc == 3) { + printf("Read %lld bytes from volume %s to %lx\n", size, + argv[3], addr); + + return ubi_volume_read(argv[3], (char *)addr, size); + } + } + + printf("Please see usage\n"); + return 1; +} + +U_BOOT_CMD( + ubi, 6, 1, do_ubi, + "ubi commands", + "part [part] [offset]\n" + " - Show or set current partition (with optional VID" + " header offset)\n" + "ubi info [l[ayout]]" + " - Display volume and ubi layout information\n" + "ubi check volumename" + " - check if volumename exists\n" + "ubi create[vol] volume [size] [type]" + " - create volume name with size\n" + "ubi write[vol] address volume size" + " - Write volume from address with size\n" + "ubi write.part address volume size [fullsize]\n" + " - Write part of a volume from address\n" + "ubi read[vol] address volume [size]" + " - Read volume to address with size\n" + "ubi remove[vol] volume" + " - Remove volume\n" + "[Legends]\n" + " volume: character name\n" + " size: specified in bytes\n" + " type: s[tatic] or d[ynamic] (default=dynamic)" +); |