Esempio n. 1
0
/*
 * Create a block device for a handle
 *
 * @handle	handle
 * @interface	block io protocol
 * @return	0 = success
 */
static int efi_bl_bind(efi_handle_t handle, void *interface)
{
	struct udevice *bdev, *parent = dm_root();
	int ret, devnum;
	char *name;
	struct efi_object *obj = efi_search_obj(handle);
	struct efi_block_io *io = interface;
	int disks;
	struct efi_blk_priv *priv;

	EFI_PRINT("%s: handle %p, interface %p\n", __func__, handle, io);

	if (!obj)
		return -ENOENT;

	devnum = blk_find_max_devnum(IF_TYPE_EFI);
	if (devnum == -ENODEV)
		devnum = 0;
	else if (devnum < 0)
		return devnum;

	name = calloc(1, 18); /* strlen("efiblk#2147483648") + 1 */
	if (!name)
		return -ENOMEM;
	sprintf(name, "efiblk#%d", devnum);

	/* Create driver model udevice for the EFI block io device */
	ret = blk_create_device(parent, "efi_blk", name, IF_TYPE_EFI, devnum,
				io->media->block_size,
				(lbaint_t)io->media->last_block, &bdev);
	if (ret)
		return ret;
	if (!bdev)
		return -ENOENT;
	/* Allocate priv */
	ret = device_probe(bdev);
	if (ret)
		return ret;
	EFI_PRINT("%s: block device '%s' created\n", __func__, bdev->name);

	priv = bdev->priv;
	priv->handle = handle;
	priv->io = interface;

	ret = blk_prepare_device(bdev);

	/* Create handles for the partions of the block device */
	disks = efi_bl_bind_partitions(handle, bdev);
	EFI_PRINT("Found %d partitions\n", disks);

	return 0;
}
Esempio n. 2
0
int host_dev_bind(int devnum, char *filename)
{
	struct host_block_dev *host_dev;
	struct udevice *dev;
	char dev_name[20], *str, *fname;
	int ret, fd;

	/* Remove and unbind the old device, if any */
	ret = blk_get_device(IF_TYPE_HOST, devnum, &dev);
	if (ret == 0) {
		ret = device_remove(dev);
		if (ret)
			return ret;
		ret = device_unbind(dev);
		if (ret)
			return ret;
	} else if (ret != -ENODEV) {
		return ret;
	}

	if (!filename)
		return 0;

	snprintf(dev_name, sizeof(dev_name), "host%d", devnum);
	str = strdup(dev_name);
	if (!str)
		return -ENOMEM;
	fname = strdup(filename);
	if (!fname) {
		free(str);
		return -ENOMEM;
	}

	fd = os_open(filename, OS_O_RDWR);
	if (fd == -1) {
		printf("Failed to access host backing file '%s'\n", filename);
		ret = -ENOENT;
		goto err;
	}
	ret = blk_create_device(gd->dm_root, "sandbox_host_blk", str,
				IF_TYPE_HOST, devnum, 512,
				os_lseek(fd, 0, OS_SEEK_END), &dev);
	if (ret)
		goto err_file;
	ret = device_probe(dev);
	if (ret) {
		device_unbind(dev);
		goto err_file;
	}

	host_dev = dev_get_priv(dev);
	host_dev->fd = fd;
	host_dev->filename = fname;

	return blk_prepare_device(dev);
err_file:
	os_close(fd);
err:
	free(fname);
	free(str);
	return ret;
}