/* * 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 <nand.h> #include <onenand_uboot.h> #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> #include <ubi_uboot.h> #include <asm/errno.h> #include <jffs2/load_kernel.h> #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 ubi_dump_vol_info(const struct ubi_volume *vol) { ubi_msg("volume information dump:"); ubi_msg("vol_id %d", vol->vol_id); ubi_msg("reserved_pebs %d", vol->reserved_pebs); ubi_msg("alignment %d", vol->alignment); ubi_msg("data_pad %d", vol->data_pad); ubi_msg("vol_type %d", vol->vol_type); ubi_msg("name_len %d", vol->name_len); ubi_msg("usable_leb_size %d", vol->usable_leb_size); ubi_msg("used_ebs %d", vol->used_ebs); ubi_msg("used_bytes %lld", vol->used_bytes); ubi_msg("last_eb_bytes %d", vol->last_eb_bytes); ubi_msg("corrupted %d", vol->corrupted); ubi_msg("upd_marker %d", vol->upd_marker); if (vol->name_len <= UBI_VOL_NAME_MAX && strnlen(vol->name, vol->name_len + 1) == vol->name_len) { ubi_msg("name %s", vol->name); } else { ubi_msg("the 1st 5 characters of the name: %c%c%c%c%c", vol->name[0], vol->name[1], vol->name[2], vol->name[3], vol->name[4]); } printf("\n"); } 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 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, int 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 %d\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("cannot remove volume %s, error %d", volume, err); if (err < 0) err = -err; return err; } static int ubi_volume_write(char *volume, void *buf, size_t 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, size); if (err < 0) { printf("Cannot start volume update\n"); return -err; } 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("volume %d on UBI device %d is corrupted", vol->vol_id, ubi->ubi_num); vol->corrupted = 1; } vol->checked = 1; ubi_gluebi_updated(vol); } printf("%d bytes written to volume %s\n", size, volume); return 0; } static 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; printf("Read %d bytes from volume %s to %p\n", size, volume, buf); 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(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; } static int do_ubi(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) { size_t size = 0; ulong addr = 0; int err = 0; if (argc < 2) return CMD_RET_USAGE; if (mtdparts_init() != 0) { printf("Error initializing mtdparts!\n"); return 1; } if (strcmp(argv[1], "part") == 0) { char mtd_dev[16]; struct mtd_device *dev; struct part_info *part; const char *vid_header_offset = NULL; u8 pnum; /* 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; #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(argv[2], &dev, &pnum, &part)) { printf("Partition %s not found!\n", argv[2]); 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", argv[2], mtd_dev); return 1; } ubi_dev.selected = 1; if (argc > 3) vid_header_offset = argv[3]; strcpy(ubi_dev.part_name, argv[2]); 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; } 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 (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_strtoul(argv[3], NULL, 16); argc--; } /* Use maximum available size */ if (!size) { size = ubi->avail_pebs * ubi->leb_size; printf("No size specified -> Using max size (%u)\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) { if (argc < 5) { printf("Please see usage\n"); return 1; } addr = simple_strtoul(argv[2], NULL, 16); size = simple_strtoul(argv[4], NULL, 16); return ubi_volume_write(argv[3], (void *)addr, size); } 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) 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 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 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)" );