[u-boot.git] / lib / efi_loader / efi_disk.c

/*
 *  EFI application disk support
 *
 *  Copyright (c) 2016 Alexander Graf
 *
 *  SPDX-License-Identifier:     GPL-2.0+
 */

#include <common.h>
#include <blk.h>
#include <dm.h>
#include <efi_loader.h>
#include <inttypes.h>
#include <part.h>
#include <malloc.h>

static const efi_guid_t efi_block_io_guid = BLOCK_IO_GUID;

struct efi_disk_obj {
	/* Generic EFI object parent class data */
	struct efi_object parent;
	/* EFI Interface callback struct for block I/O */
	struct efi_block_io ops;
	/* U-Boot ifname for block device */
	const char *ifname;
	/* U-Boot dev_index for block device */
	int dev_index;
	/* EFI Interface Media descriptor struct, referenced by ops */
	struct efi_block_io_media media;
	/* EFI device path to this block device */
	struct efi_device_path_file_path *dp;
	/* Offset into disk for simple partitions */
	lbaint_t offset;
	/* Internal block device */
	const struct blk_desc *desc;
};

static efi_status_t EFIAPI efi_disk_reset(struct efi_block_io *this,
			char extended_verification)
{
	EFI_ENTRY("%p, %x", this, extended_verification);
	return EFI_EXIT(EFI_DEVICE_ERROR);
}

enum efi_disk_direction {
	EFI_DISK_READ,
	EFI_DISK_WRITE,
};

static efi_status_t EFIAPI efi_disk_rw_blocks(struct efi_block_io *this,
			u32 media_id, u64 lba, unsigned long buffer_size,
			void *buffer, enum efi_disk_direction direction)
{
	struct efi_disk_obj *diskobj;
	struct blk_desc *desc;
	int blksz;
	int blocks;
	unsigned long n;

	diskobj = container_of(this, struct efi_disk_obj, ops);
	desc = (struct blk_desc *) diskobj->desc;
	blksz = desc->blksz;
	blocks = buffer_size / blksz;
	lba += diskobj->offset;

	debug("EFI: %s:%d blocks=%x lba=%"PRIx64" blksz=%x dir=%d\n", __func__,
	      __LINE__, blocks, lba, blksz, direction);

	/* We only support full block access */
	if (buffer_size & (blksz - 1))
		return EFI_DEVICE_ERROR;

	if (direction == EFI_DISK_READ)
		n = blk_dread(desc, lba, blocks, buffer);
	else
		n = blk_dwrite(desc, lba, blocks, buffer);

	/* We don't do interrupts, so check for timers cooperatively */
	efi_timer_check();

	debug("EFI: %s:%d n=%lx blocks=%x\n", __func__, __LINE__, n, blocks);

	if (n != blocks)
		return EFI_DEVICE_ERROR;

	return EFI_SUCCESS;
}

static efi_status_t EFIAPI efi_disk_read_blocks(struct efi_block_io *this,
			u32 media_id, u64 lba, unsigned long buffer_size,
			void *buffer)
{
	void *real_buffer = buffer;
	efi_status_t r;

#ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER
	if (buffer_size > EFI_LOADER_BOUNCE_BUFFER_SIZE) {
		r = efi_disk_read_blocks(this, media_id, lba,
			EFI_LOADER_BOUNCE_BUFFER_SIZE, buffer);
		if (r != EFI_SUCCESS)
			return r;
		return efi_disk_read_blocks(this, media_id, lba +
			EFI_LOADER_BOUNCE_BUFFER_SIZE / this->media->block_size,
			buffer_size - EFI_LOADER_BOUNCE_BUFFER_SIZE,
			buffer + EFI_LOADER_BOUNCE_BUFFER_SIZE);
	}

	real_buffer = efi_bounce_buffer;
#endif

	EFI_ENTRY("%p, %x, %"PRIx64", %lx, %p", this, media_id, lba,
		  buffer_size, buffer);

	r = efi_disk_rw_blocks(this, media_id, lba, buffer_size, real_buffer,
			       EFI_DISK_READ);

	/* Copy from bounce buffer to real buffer if necessary */
	if ((r == EFI_SUCCESS) && (real_buffer != buffer))
		memcpy(buffer, real_buffer, buffer_size);

	return EFI_EXIT(r);
}

static efi_status_t EFIAPI efi_disk_write_blocks(struct efi_block_io *this,
			u32 media_id, u64 lba, unsigned long buffer_size,
			void *buffer)
{
	void *real_buffer = buffer;
	efi_status_t r;

#ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER
	if (buffer_size > EFI_LOADER_BOUNCE_BUFFER_SIZE) {
		r = efi_disk_write_blocks(this, media_id, lba,
			EFI_LOADER_BOUNCE_BUFFER_SIZE, buffer);
		if (r != EFI_SUCCESS)
			return r;
		return efi_disk_write_blocks(this, media_id, lba +
			EFI_LOADER_BOUNCE_BUFFER_SIZE / this->media->block_size,
			buffer_size - EFI_LOADER_BOUNCE_BUFFER_SIZE,
			buffer + EFI_LOADER_BOUNCE_BUFFER_SIZE);
	}

	real_buffer = efi_bounce_buffer;
#endif

	EFI_ENTRY("%p, %x, %"PRIx64", %lx, %p", this, media_id, lba,
		  buffer_size, buffer);

	/* Populate bounce buffer if necessary */
	if (real_buffer != buffer)
		memcpy(real_buffer, buffer, buffer_size);

	r = efi_disk_rw_blocks(this, media_id, lba, buffer_size, real_buffer,
			       EFI_DISK_WRITE);

	return EFI_EXIT(r);
}

static efi_status_t EFIAPI efi_disk_flush_blocks(struct efi_block_io *this)
{
	/* We always write synchronously */
	EFI_ENTRY("%p", this);
	return EFI_EXIT(EFI_SUCCESS);
}

static const struct efi_block_io block_io_disk_template = {
	.reset = &efi_disk_reset,
	.read_blocks = &efi_disk_read_blocks,
	.write_blocks = &efi_disk_write_blocks,
	.flush_blocks = &efi_disk_flush_blocks,
};

static void efi_disk_add_dev(const char *name,
			     const char *if_typename,
			     const struct blk_desc *desc,
			     int dev_index,
			     lbaint_t offset)
{
	struct efi_disk_obj *diskobj;
	struct efi_device_path_file_path *dp;
	int objlen = sizeof(*diskobj) + (sizeof(*dp) * 2);

	/* Don't add empty devices */
	if (!desc->lba)
		return;

	diskobj = calloc(1, objlen);

	/* Fill in object data */
	dp = (void *)&diskobj[1];
	diskobj->parent.protocols[0].guid = &efi_block_io_guid;
	diskobj->parent.protocols[0].protocol_interface = &diskobj->ops;
	diskobj->parent.protocols[1].guid = &efi_guid_device_path;
	diskobj->parent.protocols[1].protocol_interface = dp;
	diskobj->parent.handle = diskobj;
	diskobj->ops = block_io_disk_template;
	diskobj->ifname = if_typename;
	diskobj->dev_index = dev_index;
	diskobj->offset = offset;
	diskobj->desc = desc;

	/* Fill in EFI IO Media info (for read/write callbacks) */
	diskobj->media.removable_media = desc->removable;
	diskobj->media.media_present = 1;
	diskobj->media.block_size = desc->blksz;
	diskobj->media.io_align = desc->blksz;
	diskobj->media.last_block = desc->lba - offset;
	diskobj->ops.media = &diskobj->media;

	/* Fill in device path */
	diskobj->dp = dp;
	dp[0].dp.type = DEVICE_PATH_TYPE_MEDIA_DEVICE;
	dp[0].dp.sub_type = DEVICE_PATH_SUB_TYPE_FILE_PATH;
	dp[0].dp.length = sizeof(*dp);
	ascii2unicode(dp[0].str, name);

	dp[1].dp.type = DEVICE_PATH_TYPE_END;
	dp[1].dp.sub_type = DEVICE_PATH_SUB_TYPE_END;
	dp[1].dp.length = sizeof(*dp);

	/* Hook up to the device list */
	list_add_tail(&diskobj->parent.link, &efi_obj_list);
}

static int efi_disk_create_eltorito(struct blk_desc *desc,
				    const char *if_typename,
				    int diskid,
				    const char *pdevname)
{
	int disks = 0;
#if CONFIG_IS_ENABLED(ISO_PARTITION)
	char devname[32] = { 0 }; /* dp->str is u16[32] long */
	disk_partition_t info;
	int part = 1;

	if (desc->part_type != PART_TYPE_ISO)
		return 0;

	while (!part_get_info(desc, part, &info)) {
		snprintf(devname, sizeof(devname), "%s:%d", pdevname,
			 part);
		efi_disk_add_dev(devname, if_typename, desc, diskid,
				 info.start);
		part++;
		disks++;
	}
#endif

	return disks;
}

/*
 * U-Boot doesn't have a list of all online disk devices. So when running our
 * EFI payload, we scan through all of the potentially available ones and
 * store them in our object pool.
 *
 * TODO([email protected]): Actually with CONFIG_BLK, U-Boot does have this.
 * Consider converting the code to look up devices as needed. The EFI device
 * could be a child of the UCLASS_BLK block device, perhaps.
 *
 * This gets called from do_bootefi_exec().
 */
int efi_disk_register(void)
{
	int disks = 0;
#ifdef CONFIG_BLK
	struct udevice *dev;

	for (uclass_first_device_check(UCLASS_BLK, &dev);
	     dev;
	     uclass_next_device_check(&dev)) {
		struct blk_desc *desc = dev_get_uclass_platdata(dev);
		const char *if_typename = dev->driver->name;

		printf("Scanning disk %s...\n", dev->name);
		efi_disk_add_dev(dev->name, if_typename, desc, desc->devnum, 0);
		disks++;

		/*
		* El Torito images show up as block devices in an EFI world,
		* so let's create them here
		*/
		disks += efi_disk_create_eltorito(desc, if_typename,
						  desc->devnum, dev->name);
	}
#else
	int i, if_type;

	/* Search for all available disk devices */
	for (if_type = 0; if_type < IF_TYPE_COUNT; if_type++) {
		const struct blk_driver *cur_drvr;
		const char *if_typename;

		cur_drvr = blk_driver_lookup_type(if_type);
		if (!cur_drvr)
			continue;

		if_typename = cur_drvr->if_typename;
		printf("Scanning disks on %s...\n", if_typename);
		for (i = 0; i < 4; i++) {
			struct blk_desc *desc;
			char devname[32] = { 0 }; /* dp->str is u16[32] long */

			desc = blk_get_devnum_by_type(if_type, i);
			if (!desc)
				continue;
			if (desc->type == DEV_TYPE_UNKNOWN)
				continue;

			snprintf(devname, sizeof(devname), "%s%d",
				 if_typename, i);
			efi_disk_add_dev(devname, if_typename, desc, i, 0);
			disks++;

			/*
			 * El Torito images show up as block devices
			 * in an EFI world, so let's create them here
			 */
			disks += efi_disk_create_eltorito(desc, if_typename,
							  i, devname);
		}
	}
#endif
	printf("Found %d disks\n", disks);

	return 0;
}
Commit	Line	Data
2a22d05d AG	1	/*
	2	* EFI application disk support
	3	*
	4	* Copyright (c) 2016 Alexander Graf
	5	*
	6	* SPDX-License-Identifier: GPL-2.0+
	7	*/
	8
	9	#include <common.h>
6dd9faf8	10	#include <blk.h>
487d756f	11	#include <dm.h>
2a22d05d AG	12	#include <efi_loader.h>
	13	#include <inttypes.h>
	14	#include <part.h>
	15	#include <malloc.h>
	16
	17	static const efi_guid_t efi_block_io_guid = BLOCK_IO_GUID;
	18
	19	struct efi_disk_obj {
	20	/* Generic EFI object parent class data */
	21	struct efi_object parent;
	22	/* EFI Interface callback struct for block I/O */
	23	struct efi_block_io ops;
	24	/* U-Boot ifname for block device */
	25	const char *ifname;
	26	/* U-Boot dev_index for block device */
	27	int dev_index;
	28	/* EFI Interface Media descriptor struct, referenced by ops */
	29	struct efi_block_io_media media;
	30	/* EFI device path to this block device */
	31	struct efi_device_path_file_path *dp;
8c3df0bf AG	32	/* Offset into disk for simple partitions */
8c3df0bf AG	33	lbaint_t offset;
f9d334bd AG	34	/* Internal block device */
f9d334bd AG	35	const struct blk_desc *desc;
2a22d05d AG	36	};
2a22d05d AG	37
2a22d05d AG	38	static efi_status_t EFIAPI efi_disk_reset(struct efi_block_io *this,
	39	char extended_verification)
	40	{
	41	EFI_ENTRY("%p, %x", this, extended_verification);
	42	return EFI_EXIT(EFI_DEVICE_ERROR);
	43	}
	44
	45	enum efi_disk_direction {
	46	EFI_DISK_READ,
	47	EFI_DISK_WRITE,
	48	};
	49
	50	static efi_status_t EFIAPI efi_disk_rw_blocks(struct efi_block_io *this,
	51	u32 media_id, u64 lba, unsigned long buffer_size,
	52	void *buffer, enum efi_disk_direction direction)
	53	{
	54	struct efi_disk_obj *diskobj;
	55	struct blk_desc *desc;
	56	int blksz;
	57	int blocks;
	58	unsigned long n;
	59
2a22d05d	60	diskobj = container_of(this, struct efi_disk_obj, ops);
f9d334bd	61	desc = (struct blk_desc *) diskobj->desc;
2a22d05d AG	62	blksz = desc->blksz;
2a22d05d AG	63	blocks = buffer_size / blksz;
8c3df0bf	64	lba += diskobj->offset;
2a22d05d	65
edcef3ba AG	66	debug("EFI: %s:%d blocks=%x lba=%"PRIx64" blksz=%x dir=%d\n", __func__,
edcef3ba AG	67	__LINE__, blocks, lba, blksz, direction);
2a22d05d AG	68
	69	/* We only support full block access */
	70	if (buffer_size & (blksz - 1))
3304990b	71	return EFI_DEVICE_ERROR;
2a22d05d AG	72
2a22d05d AG	73	if (direction == EFI_DISK_READ)
487d756f	74	n = blk_dread(desc, lba, blocks, buffer);
2a22d05d	75	else
487d756f	76	n = blk_dwrite(desc, lba, blocks, buffer);
2a22d05d AG	77
	78	/* We don't do interrupts, so check for timers cooperatively */
	79	efi_timer_check();
	80
edcef3ba AG	81	debug("EFI: %s:%d n=%lx blocks=%x\n", __func__, __LINE__, n, blocks);
edcef3ba AG	82
2a22d05d	83	if (n != blocks)
3304990b	84	return EFI_DEVICE_ERROR;
2a22d05d	85
3304990b	86	return EFI_SUCCESS;
2a22d05d AG	87	}
2a22d05d AG	88
e275458c	89	static efi_status_t EFIAPI efi_disk_read_blocks(struct efi_block_io *this,
2a22d05d AG	90	u32 media_id, u64 lba, unsigned long buffer_size,
	91	void *buffer)
	92	{
51735ae0 AG	93	void *real_buffer = buffer;
	94	efi_status_t r;
	95
	96	#ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER
	97	if (buffer_size > EFI_LOADER_BOUNCE_BUFFER_SIZE) {
	98	r = efi_disk_read_blocks(this, media_id, lba,
	99	EFI_LOADER_BOUNCE_BUFFER_SIZE, buffer);
	100	if (r != EFI_SUCCESS)
	101	return r;
	102	return efi_disk_read_blocks(this, media_id, lba +
	103	EFI_LOADER_BOUNCE_BUFFER_SIZE / this->media->block_size,
	104	buffer_size - EFI_LOADER_BOUNCE_BUFFER_SIZE,
	105	buffer + EFI_LOADER_BOUNCE_BUFFER_SIZE);
	106	}
	107
	108	real_buffer = efi_bounce_buffer;
	109	#endif
	110
	111	EFI_ENTRY("%p, %x, %"PRIx64", %lx, %p", this, media_id, lba,
	112	buffer_size, buffer);
	113
	114	r = efi_disk_rw_blocks(this, media_id, lba, buffer_size, real_buffer,
	115	EFI_DISK_READ);
	116
	117	/* Copy from bounce buffer to real buffer if necessary */
	118	if ((r == EFI_SUCCESS) && (real_buffer != buffer))
	119	memcpy(buffer, real_buffer, buffer_size);
	120
	121	return EFI_EXIT(r);
2a22d05d AG	122	}
2a22d05d AG	123
e275458c	124	static efi_status_t EFIAPI efi_disk_write_blocks(struct efi_block_io *this,
2a22d05d AG	125	u32 media_id, u64 lba, unsigned long buffer_size,
	126	void *buffer)
	127	{
51735ae0 AG	128	void *real_buffer = buffer;
	129	efi_status_t r;
	130
	131	#ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER
	132	if (buffer_size > EFI_LOADER_BOUNCE_BUFFER_SIZE) {
	133	r = efi_disk_write_blocks(this, media_id, lba,
	134	EFI_LOADER_BOUNCE_BUFFER_SIZE, buffer);
	135	if (r != EFI_SUCCESS)
	136	return r;
	137	return efi_disk_write_blocks(this, media_id, lba +
	138	EFI_LOADER_BOUNCE_BUFFER_SIZE / this->media->block_size,
	139	buffer_size - EFI_LOADER_BOUNCE_BUFFER_SIZE,
	140	buffer + EFI_LOADER_BOUNCE_BUFFER_SIZE);
	141	}
	142
	143	real_buffer = efi_bounce_buffer;
	144	#endif
	145
	146	EFI_ENTRY("%p, %x, %"PRIx64", %lx, %p", this, media_id, lba,
	147	buffer_size, buffer);
	148
	149	/* Populate bounce buffer if necessary */
	150	if (real_buffer != buffer)
	151	memcpy(real_buffer, buffer, buffer_size);
	152
	153	r = efi_disk_rw_blocks(this, media_id, lba, buffer_size, real_buffer,
	154	EFI_DISK_WRITE);
	155
	156	return EFI_EXIT(r);
2a22d05d AG	157	}
	158
	159	static efi_status_t EFIAPI efi_disk_flush_blocks(struct efi_block_io *this)
	160	{
	161	/* We always write synchronously */
	162	EFI_ENTRY("%p", this);
	163	return EFI_EXIT(EFI_SUCCESS);
	164	}
	165
	166	static const struct efi_block_io block_io_disk_template = {
	167	.reset = &efi_disk_reset,
	168	.read_blocks = &efi_disk_read_blocks,
	169	.write_blocks = &efi_disk_write_blocks,
	170	.flush_blocks = &efi_disk_flush_blocks,
	171	};
	172
487d756f SG	173	static void efi_disk_add_dev(const char *name,
487d756f SG	174	const char *if_typename,
4a12a97c AG	175	const struct blk_desc *desc,
	176	int dev_index,
	177	lbaint_t offset)
	178	{
	179	struct efi_disk_obj *diskobj;
	180	struct efi_device_path_file_path *dp;
	181	int objlen = sizeof(diskobj) + (sizeof(dp) * 2);
	182
0812d1a0 AG	183	/* Don't add empty devices */
	184	if (!desc->lba)
	185	return;
	186
4a12a97c AG	187	diskobj = calloc(1, objlen);
	188
	189	/* Fill in object data */
b5349f74	190	dp = (void *)&diskobj[1];
4a12a97c	191	diskobj->parent.protocols[0].guid = &efi_block_io_guid;
b5349f74	192	diskobj->parent.protocols[0].protocol_interface = &diskobj->ops;
4a12a97c	193	diskobj->parent.protocols[1].guid = &efi_guid_device_path;
b5349f74	194	diskobj->parent.protocols[1].protocol_interface = dp;
4a12a97c AG	195	diskobj->parent.handle = diskobj;
4a12a97c AG	196	diskobj->ops = block_io_disk_template;
487d756f	197	diskobj->ifname = if_typename;
4a12a97c	198	diskobj->dev_index = dev_index;
8c3df0bf	199	diskobj->offset = offset;
f9d334bd	200	diskobj->desc = desc;
4a12a97c AG	201
	202	/* Fill in EFI IO Media info (for read/write callbacks) */
	203	diskobj->media.removable_media = desc->removable;
	204	diskobj->media.media_present = 1;
	205	diskobj->media.block_size = desc->blksz;
	206	diskobj->media.io_align = desc->blksz;
0812d1a0	207	diskobj->media.last_block = desc->lba - offset;
4a12a97c AG	208	diskobj->ops.media = &diskobj->media;
	209
	210	/* Fill in device path */
4a12a97c AG	211	diskobj->dp = dp;
	212	dp[0].dp.type = DEVICE_PATH_TYPE_MEDIA_DEVICE;
	213	dp[0].dp.sub_type = DEVICE_PATH_SUB_TYPE_FILE_PATH;
	214	dp[0].dp.length = sizeof(*dp);
	215	ascii2unicode(dp[0].str, name);
	216
	217	dp[1].dp.type = DEVICE_PATH_TYPE_END;
	218	dp[1].dp.sub_type = DEVICE_PATH_SUB_TYPE_END;
	219	dp[1].dp.length = sizeof(*dp);
	220
	221	/* Hook up to the device list */
	222	list_add_tail(&diskobj->parent.link, &efi_obj_list);
	223	}
	224
8c3df0bf	225	static int efi_disk_create_eltorito(struct blk_desc *desc,
487d756f	226	const char *if_typename,
f9d334bd AG	227	int diskid,
f9d334bd AG	228	const char *pdevname)
8c3df0bf AG	229	{
8c3df0bf AG	230	int disks = 0;
1acc0087	231	#if CONFIG_IS_ENABLED(ISO_PARTITION)
ecbe1a07	232	char devname[32] = { 0 }; /* dp->str is u16[32] long */
8c3df0bf AG	233	disk_partition_t info;
	234	int part = 1;
	235
	236	if (desc->part_type != PART_TYPE_ISO)
	237	return 0;
	238
	239	while (!part_get_info(desc, part, &info)) {
f9d334bd AG	240	snprintf(devname, sizeof(devname), "%s:%d", pdevname,
f9d334bd AG	241	part);
487d756f SG	242	efi_disk_add_dev(devname, if_typename, desc, diskid,
487d756f SG	243	info.start);
8c3df0bf AG	244	part++;
	245	disks++;
	246	}
	247	#endif
	248
	249	return disks;
	250	}
	251
2a22d05d AG	252	/*
	253	* U-Boot doesn't have a list of all online disk devices. So when running our
	254	* EFI payload, we scan through all of the potentially available ones and
	255	* store them in our object pool.
	256	*
487d756f SG	257	* TODO([email protected]): Actually with CONFIG_BLK, U-Boot does have this.
	258	* Consider converting the code to look up devices as needed. The EFI device
	259	* could be a child of the UCLASS_BLK block device, perhaps.
	260	*
2a22d05d AG	261	* This gets called from do_bootefi_exec().
	262	*/
	263	int efi_disk_register(void)
	264	{
2a22d05d	265	int disks = 0;
487d756f SG	266	#ifdef CONFIG_BLK
	267	struct udevice *dev;
	268
70bfcdc6	269	for (uclass_first_device_check(UCLASS_BLK, &dev);
487d756f	270	dev;
70bfcdc6	271	uclass_next_device_check(&dev)) {
487d756f SG	272	struct blk_desc *desc = dev_get_uclass_platdata(dev);
	273	const char *if_typename = dev->driver->name;
	274
	275	printf("Scanning disk %s...\n", dev->name);
	276	efi_disk_add_dev(dev->name, if_typename, desc, desc->devnum, 0);
	277	disks++;
	278
	279	/*
	280	* El Torito images show up as block devices in an EFI world,
	281	* so let's create them here
	282	*/
	283	disks += efi_disk_create_eltorito(desc, if_typename,
f9d334bd	284	desc->devnum, dev->name);
487d756f SG	285	}
	286	#else
	287	int i, if_type;
2a22d05d AG	288
2a22d05d AG	289	/* Search for all available disk devices */
6dd9faf8	290	for (if_type = 0; if_type < IF_TYPE_COUNT; if_type++) {
487d756f SG	291	const struct blk_driver *cur_drvr;
	292	const char *if_typename;
	293
6dd9faf8 SG	294	cur_drvr = blk_driver_lookup_type(if_type);
	295	if (!cur_drvr)
	296	continue;
	297
487d756f SG	298	if_typename = cur_drvr->if_typename;
487d756f SG	299	printf("Scanning disks on %s...\n", if_typename);
2a22d05d AG	300	for (i = 0; i < 4; i++) {
2a22d05d AG	301	struct blk_desc *desc;
ecbe1a07	302	char devname[32] = { 0 }; /* dp->str is u16[32] long */
2a22d05d	303
6dd9faf8	304	desc = blk_get_devnum_by_type(if_type, i);
2a22d05d AG	305	if (!desc)
	306	continue;
	307	if (desc->type == DEV_TYPE_UNKNOWN)
	308	continue;
	309
2a22d05d	310	snprintf(devname, sizeof(devname), "%s%d",
487d756f SG	311	if_typename, i);
487d756f SG	312	efi_disk_add_dev(devname, if_typename, desc, i, 0);
2a22d05d	313	disks++;
8c3df0bf AG	314
	315	/*
	316	* El Torito images show up as block devices
	317	* in an EFI world, so let's create them here
	318	*/
f9d334bd AG	319	disks += efi_disk_create_eltorito(desc, if_typename,
f9d334bd AG	320	i, devname);
2a22d05d AG	321	}
2a22d05d AG	322	}
487d756f	323	#endif
2a22d05d AG	324	printf("Found %d disks\n", disks);
	325
	326	return 0;
	327	}