/**
* fw_get_filesystem_firmware - load firmware into an allocated buffer.
* @dev: An instance of a driver.
*
* Return: Size of total read, negative value when error.
*/
static int fw_get_filesystem_firmware(struct udevice *dev)
{
loff_t actread;
char *storage_interface, *dev_part, *ubi_mtdpart, *ubi_volume;
int ret;
storage_interface = env_get("storage_interface");
dev_part = env_get("fw_dev_part");
ubi_mtdpart = env_get("fw_ubi_mtdpart");
ubi_volume = env_get("fw_ubi_volume");
if (storage_interface && dev_part) {
ret = fs_set_blk_dev(storage_interface, dev_part, FS_TYPE_ANY);
} else if (storage_interface && ubi_mtdpart && ubi_volume) {
ret = mount_ubifs(ubi_mtdpart, ubi_volume);
if (ret)
return ret;
if (!strcmp("ubi", storage_interface))
ret = fs_set_blk_dev(storage_interface, NULL,
FS_TYPE_UBIFS);
else
ret = -ENODEV;
} else {
ret = select_fs_dev(dev->platdata);
}
if (ret)
goto out;
struct firmware *firmwarep = dev_get_priv(dev);
if (!firmwarep)
return -ENOMEM;
ret = fs_read(firmwarep->name, (ulong)map_to_sysmem(firmwarep->data),
firmwarep->offset, firmwarep->size, &actread);
if (ret) {
debug("Error: %d Failed to read %s from flash %lld != %zu.\n",
ret, firmwarep->name, actread, firmwarep->size);
} else {
ret = actread;
}
out:
#ifdef CONFIG_CMD_UBIFS
umount_ubifs();
#endif
return ret;
}
static int select_fs_dev(struct device_platdata *plat)
{
int ret;
if (plat->phandlepart.phandle) {
ofnode node;
node = ofnode_get_by_phandle(plat->phandlepart.phandle);
struct udevice *dev;
ret = device_get_global_by_ofnode(node, &dev);
if (!ret) {
struct blk_desc *desc = blk_get_by_device(dev);
if (desc) {
ret = fs_set_blk_dev_with_part(desc,
plat->phandlepart.partition);
} else {
debug("%s: No device found\n", __func__);
return -ENODEV;
}
}
} else if (plat->mtdpart && plat->ubivol) {
ret = mount_ubifs(plat->mtdpart, plat->ubivol);
if (ret)
return ret;
ret = fs_set_blk_dev("ubi", NULL, FS_TYPE_UBIFS);
} else {
debug("Error: unsupported storage device.\n");
return -ENODEV;
}
if (ret)
debug("Error: could not access storage.\n");
return ret;
}
static int ubifs_fill_super(struct super_block *sb, void *data, int silent)
{
struct ubi_volume_desc *ubi = sb->s_fs_info;
struct ubifs_info *c;
struct inode *root;
int err;
c = kzalloc(sizeof(struct ubifs_info), GFP_KERNEL);
if (!c)
return -ENOMEM;
spin_lock_init(&c->cnt_lock);
spin_lock_init(&c->cs_lock);
spin_lock_init(&c->buds_lock);
spin_lock_init(&c->space_lock);
spin_lock_init(&c->orphan_lock);
init_rwsem(&c->commit_sem);
mutex_init(&c->lp_mutex);
mutex_init(&c->tnc_mutex);
mutex_init(&c->log_mutex);
mutex_init(&c->mst_mutex);
mutex_init(&c->umount_mutex);
init_waitqueue_head(&c->cmt_wq);
c->buds = RB_ROOT;
c->old_idx = RB_ROOT;
c->size_tree = RB_ROOT;
c->orph_tree = RB_ROOT;
INIT_LIST_HEAD(&c->infos_list);
INIT_LIST_HEAD(&c->idx_gc);
INIT_LIST_HEAD(&c->replay_list);
INIT_LIST_HEAD(&c->replay_buds);
INIT_LIST_HEAD(&c->uncat_list);
INIT_LIST_HEAD(&c->empty_list);
INIT_LIST_HEAD(&c->freeable_list);
INIT_LIST_HEAD(&c->frdi_idx_list);
INIT_LIST_HEAD(&c->unclean_leb_list);
INIT_LIST_HEAD(&c->old_buds);
INIT_LIST_HEAD(&c->orph_list);
INIT_LIST_HEAD(&c->orph_new);
c->highest_inum = UBIFS_FIRST_INO;
c->lhead_lnum = c->ltail_lnum = UBIFS_LOG_LNUM;
ubi_get_volume_info(ubi, &c->vi);
ubi_get_device_info(c->vi.ubi_num, &c->di);
/* Re-open the UBI device in read-write mode */
c->ubi = ubi_open_volume(c->vi.ubi_num, c->vi.vol_id, UBI_READONLY);
if (IS_ERR(c->ubi)) {
err = PTR_ERR(c->ubi);
goto out_free;
}
c->vfs_sb = sb;
sb->s_fs_info = c;
sb->s_magic = UBIFS_SUPER_MAGIC;
sb->s_blocksize = UBIFS_BLOCK_SIZE;
sb->s_blocksize_bits = UBIFS_BLOCK_SHIFT;
sb->s_dev = c->vi.cdev;
sb->s_maxbytes = c->max_inode_sz = key_max_inode_size(c);
if (c->max_inode_sz > MAX_LFS_FILESIZE)
sb->s_maxbytes = c->max_inode_sz = MAX_LFS_FILESIZE;
if (c->rw_incompat) {
ubifs_err("the file-system is not R/W-compatible");
ubifs_msg("on-flash format version is w%d/r%d, but software "
"only supports up to version w%d/r%d", c->fmt_version,
c->ro_compat_version, UBIFS_FORMAT_VERSION,
UBIFS_RO_COMPAT_VERSION);
return -EROFS;
}
mutex_lock(&c->umount_mutex);
err = mount_ubifs(c);
if (err) {
ubifs_assert(err < 0);
goto out_unlock;
}
/* Read the root inode */
root = ubifs_iget(sb, UBIFS_ROOT_INO);
if (IS_ERR(root)) {
err = PTR_ERR(root);
goto out_umount;
}
sb->s_root = NULL;
mutex_unlock(&c->umount_mutex);
return 0;
out_umount:
ubifs_umount(c);
out_unlock:
mutex_unlock(&c->umount_mutex);
ubi_close_volume(c->ubi);
out_free:
kfree(c);
return err;
}
