[U-Boot] [PATCH] [UBI] UBI command support v3
Kyungmin Park
kmpark at infradead.org
Tue Oct 28 08:59:53 CET 2008
It supports basic operation such as create, remove, read, and write.
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
diff --git a/common/Makefile b/common/Makefile
index f00cbd9..b02a541 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -139,6 +139,7 @@ COBJS-$(CONFIG_CMD_SETEXPR) += cmd_setexpr.o
COBJS-$(CONFIG_CMD_SPI) += cmd_spi.o
COBJS-$(CONFIG_CMD_STRINGS) += cmd_strings.o
COBJS-$(CONFIG_CMD_TERMINAL) += cmd_terminal.o
+COBJS-$(CONFIG_CMD_UBI) += cmd_ubi.o
COBJS-$(CONFIG_CMD_UNIVERSE) += cmd_universe.o
ifdef CONFIG_CMD_USB
COBJS-y += cmd_usb.o
diff --git a/common/cmd_ubi.c b/common/cmd_ubi.c
new file mode 100644
index 0000000..8c46cca
--- /dev/null
+++ b/common/cmd_ubi.c
@@ -0,0 +1,515 @@
+/*
+ * Unsorted Block Image commands
+ *
+ * Copyright (C) 2008 Samsung Electronics
+ * Kyungmin Park <kyungmin.park at samsung.com>
+ *
+ * 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 <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <ubi_uboot.h>
+#include <asm/errno.h>
+
+/* Private own data */
+static struct ubi_device *ubi;
+static int ubi_initialized;
+
+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 parse_num(size_t *num, const char *token)
+{
+ char *endp;
+ size_t n;
+
+ n = (size_t) ustrtoul(token, &endp, 0);
+ if (*endp)
+ return -EINVAL;
+
+ *num = n;
+ 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)
+ 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) {
+ err = -ENAMETOOLONG;
+ goto bad;
+ }
+
+ return 0;
+bad:
+ printf("bad volume creation request");
+ 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 int ubi_remove_vol(char *volume)
+{
+ int i, err, reserved_pebs;
+ int found = 0, vol_id = 0;
+ struct ubi_volume *vol;
+
+ for (i = 0; i < ubi->vtbl_slots; i++) {
+ vol = ubi->volumes[i];
+ if (vol && !strcmp(vol->name, volume)) {
+ printf("Volume %s found at valid %d\n", volume, i);
+ vol_id = i;
+ found = 1;
+ break;
+ }
+ }
+ if (!found) {
+ printf("%s volume not found\n", volume);
+ 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_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_id]->eba_tbl = NULL;
+ ubi->volumes[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 %d, error %d", vol_id, err);
+ return err;
+}
+
+static int ubi_volume_write(char *volume, void *buf, size_t size)
+{
+ int i = 0, err = -1;
+ int rsvd_bytes = 0;
+ int found = 0;
+ struct ubi_volume *vol;
+
+ for (i = 0; i < ubi->vtbl_slots; i++) {
+ vol = ubi->volumes[i];
+ if (vol && !strcmp(vol->name, volume)) {
+ printf("Volume \"%s\" found with id %d\n", volume, i);
+ found = 1;
+ break;
+ }
+ }
+ if (!found) {
+ printf("%s voume not found\n", volume);
+ return 1;
+ }
+ rsvd_bytes = vol->reserved_pebs * (ubi->leb_size - vol->data_pad);
+ if (size < 0 || size > rsvd_bytes) {
+ printf("rsvd_bytes=%d vol->reserved_pebs=%d ubi->leb_size=%d\n",
+ rsvd_bytes, vol->reserved_pebs, ubi->leb_size);
+ printf("vol->data_pad=%d\n", vol->data_pad);
+ printf("Size > volume size !!\n");
+ return 1;
+ }
+
+ 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);
+ }
+
+ return 0;
+}
+
+static int ubi_volume_read(char *volume, char *buf, size_t size)
+{
+ int err, lnum, off, len, tbuf_size, i = 0;
+ size_t count_save = size;
+ void *tbuf;
+ unsigned long long tmp;
+ struct ubi_volume *vol = NULL;
+ loff_t offp = 0;
+
+ for (i = 0; i < ubi->vtbl_slots; i++) {
+ vol = ubi->volumes[i];
+ if (vol && !strcmp(vol->name, volume)) {
+ printf("Volume %s found at volume id %d\n",
+ volume, vol->vol_id);
+ break;
+ }
+ }
+ if (i == ubi->vtbl_slots) {
+ printf("%s voume not found\n", volume);
+ return 0;
+ }
+
+ printf("read %i bytes from volume %d to %x(buf address)\n",
+ (int) size, vol->vol_id, (unsigned)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("Read [%lu] bytes\n", (unsigned long) 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)
+ count_save = 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;
+ printf("off=%d lnum=%d\n", off, lnum);
+ 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);
+ break;
+ }
+ off += len;
+ if (off == vol->usable_leb_size) {
+ lnum += 1;
+ off -= vol->usable_leb_size;
+ }
+
+ size -= len;
+ offp += len;
+
+ printf("buf = %x\n", (unsigned)buf);
+ memcpy(buf, tbuf, len);
+ printf("buf[0] = %x\n", buf[0]);
+
+ buf += len;
+ len = size > tbuf_size ? tbuf_size : size;
+ } while (size);
+
+ free(tbuf);
+ return err ? err : count_save - size;
+}
+
+static int do_ubi(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ size_t size = 0;
+ ulong addr = 0;
+ int err = 0;
+
+ if (!ubi_initialized) {
+ err = ubi_board_scan();
+ if (err) {
+ printf("UBI init error %d\n", err);
+ return err;
+ }
+ ubi = ubi_devices[0];
+ ubi_initialized = 1;
+ }
+
+ if (argc < 2) {
+ printf("Usage:\n%s\n", cmdtp->usage);
+ 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) {
+ err = parse_num(&size, argv[3]);
+ if (err) {
+ printf("Incorrect type\n");
+ return err;
+ }
+ argc--;
+ }
+ /* Use maximum available size */
+ if (!size)
+ size = ubi->avail_pebs * ubi->leb_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);
+ err = parse_num(&size, argv[4]);
+ if (err) {
+ printf("Please see usage\n");
+ return err;
+ }
+
+ 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) {
+ err = parse_num(&size, argv[4]);
+ if (err) {
+ printf("Please see usage\n");
+ return err;
+ }
+ 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 - ubi commands\n",
+ "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: charater name\n"
+ " size: KiB, MiB, GiB, and bytes\n"
+ " type: s[tatic] or d[ynamic] (default=dynamic)\n"
+);
diff --git a/include/exports.h b/include/exports.h
index 6377875..0620e9e 100644
--- a/include/exports.h
+++ b/include/exports.h
@@ -25,6 +25,7 @@ char *getenv (char *name);
int setenv (char *varname, char *varvalue);
long simple_strtol(const char *cp,char **endp,unsigned int base);
int strcmp(const char * cs,const char * ct);
+int ustrtoul(const char *cp, char **endp, unsigned int base);
#ifdef CONFIG_HAS_UID
void forceenv (char *varname, char *varvalue);
#endif
diff --git a/include/jffs2/load_kernel.h b/include/jffs2/load_kernel.h
index 551fd0c..e9b7d6e 100644
--- a/include/jffs2/load_kernel.h
+++ b/include/jffs2/load_kernel.h
@@ -73,4 +73,9 @@ struct mtdids {
#define putLabeledWord(x, y) printf("%s %08x\n", x, (unsigned int)y)
#define led_blink(x, y, z, a)
+/* common/cmd_jffs2.c */
+extern int mtdparts_init(void);
+extern int find_dev_and_part(const char *id, struct mtd_device **dev,
+ u8 *part_num, struct part_info **part);
+
#endif /* load_kernel_h */
diff --git a/lib_generic/vsprintf.c b/lib_generic/vsprintf.c
index 6e903db..767dde1 100644
--- a/lib_generic/vsprintf.c
+++ b/lib_generic/vsprintf.c
@@ -55,6 +55,29 @@ long simple_strtol(const char *cp,char **endp,unsigned int base)
return simple_strtoul(cp,endp,base);
}
+int ustrtoul(const char *cp, char **endp, unsigned int base)
+{
+ unsigned long result = simple_strtoul(cp, endp, base);
+ switch (**endp) {
+ case 'G' :
+ result *= 1024;
+ /* fall through */
+ case 'M':
+ result *= 1024;
+ /* fall through */
+ case 'K':
+ case 'k':
+ result *= 1024;
+ if ((*endp)[1] == 'i') {
+ if ((*endp)[2] == 'B')
+ (*endp) += 3;
+ else
+ (*endp) += 2;
+ }
+ }
+ return result;
+}
+
#ifdef CONFIG_SYS_64BIT_STRTOUL
unsigned long long simple_strtoull (const char *cp, char **endp, unsigned int base)
{
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