[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 *dp;
	/* partition # */
	unsigned int part;
	/* Offset into disk for simple partitions */
	lbaint_t offset;
	/* Internal block device */
	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 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,
			     struct blk_desc *desc,
			     int dev_index,
			     lbaint_t offset,
			     unsigned int part)
{
	struct efi_disk_obj *diskobj;

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

	diskobj = calloc(1, sizeof(*diskobj));

	/* Fill in object data */
	diskobj->dp = efi_dp_from_part(desc, part);
	diskobj->part = part;
	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 = diskobj->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;

	/* 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;

	/* and devices for each partition: */
	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);
		part++;
		disks++;
	}

	/* ... and add block device: */
	efi_disk_add_dev(devname, if_typename, desc, diskid, 0, 0);
#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;
		disk_partition_t info;
		int part = 1;

		printf("Scanning disk %s...\n", dev->name);

		/* add devices for each partition: */
		while (!part_get_info(desc, part, &info)) {
			efi_disk_add_dev(dev->name, if_typename, desc,
					 desc->devnum, 0, part);
			part++;
		}

		/* ... and add block device: */
		efi_disk_add_dev(dev->name, if_typename, desc,
				 desc->devnum, 0, 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, 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 */
884bcf6f RC	31	struct efi_device_path *dp;
	32	/* partition # */
	33	unsigned int part;
8c3df0bf AG	34	/* Offset into disk for simple partitions */
8c3df0bf AG	35	lbaint_t offset;
f9d334bd	36	/* Internal block device */
884bcf6f	37	struct blk_desc *desc;
2a22d05d AG	38	};
2a22d05d AG	39
2a22d05d AG	40	static efi_status_t EFIAPI efi_disk_reset(struct efi_block_io *this,
	41	char extended_verification)
	42	{
	43	EFI_ENTRY("%p, %x", this, extended_verification);
	44	return EFI_EXIT(EFI_DEVICE_ERROR);
	45	}
	46
	47	enum efi_disk_direction {
	48	EFI_DISK_READ,
	49	EFI_DISK_WRITE,
	50	};
	51
a80a232e	52	static efi_status_t efi_disk_rw_blocks(struct efi_block_io *this,
2a22d05d AG	53	u32 media_id, u64 lba, unsigned long buffer_size,
	54	void *buffer, enum efi_disk_direction direction)
	55	{
	56	struct efi_disk_obj *diskobj;
	57	struct blk_desc *desc;
	58	int blksz;
	59	int blocks;
	60	unsigned long n;
	61
2a22d05d	62	diskobj = container_of(this, struct efi_disk_obj, ops);
f9d334bd	63	desc = (struct blk_desc *) diskobj->desc;
2a22d05d AG	64	blksz = desc->blksz;
2a22d05d AG	65	blocks = buffer_size / blksz;
8c3df0bf	66	lba += diskobj->offset;
2a22d05d	67
edcef3ba AG	68	debug("EFI: %s:%d blocks=%x lba=%"PRIx64" blksz=%x dir=%d\n", __func__,
edcef3ba AG	69	__LINE__, blocks, lba, blksz, direction);
2a22d05d AG	70
	71	/* We only support full block access */
	72	if (buffer_size & (blksz - 1))
3304990b	73	return EFI_DEVICE_ERROR;
2a22d05d AG	74
2a22d05d AG	75	if (direction == EFI_DISK_READ)
487d756f	76	n = blk_dread(desc, lba, blocks, buffer);
2a22d05d	77	else
487d756f	78	n = blk_dwrite(desc, lba, blocks, buffer);
2a22d05d AG	79
	80	/* We don't do interrupts, so check for timers cooperatively */
	81	efi_timer_check();
	82
edcef3ba AG	83	debug("EFI: %s:%d n=%lx blocks=%x\n", __func__, __LINE__, n, blocks);
edcef3ba AG	84
2a22d05d	85	if (n != blocks)
3304990b	86	return EFI_DEVICE_ERROR;
2a22d05d	87
3304990b	88	return EFI_SUCCESS;
2a22d05d AG	89	}
2a22d05d AG	90
e275458c	91	static efi_status_t EFIAPI efi_disk_read_blocks(struct efi_block_io *this,
2a22d05d AG	92	u32 media_id, u64 lba, unsigned long buffer_size,
	93	void *buffer)
	94	{
51735ae0 AG	95	void *real_buffer = buffer;
	96	efi_status_t r;
	97
	98	#ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER
	99	if (buffer_size > EFI_LOADER_BOUNCE_BUFFER_SIZE) {
	100	r = efi_disk_read_blocks(this, media_id, lba,
	101	EFI_LOADER_BOUNCE_BUFFER_SIZE, buffer);
	102	if (r != EFI_SUCCESS)
	103	return r;
	104	return efi_disk_read_blocks(this, media_id, lba +
	105	EFI_LOADER_BOUNCE_BUFFER_SIZE / this->media->block_size,
	106	buffer_size - EFI_LOADER_BOUNCE_BUFFER_SIZE,
	107	buffer + EFI_LOADER_BOUNCE_BUFFER_SIZE);
	108	}
	109
	110	real_buffer = efi_bounce_buffer;
	111	#endif
	112
	113	EFI_ENTRY("%p, %x, %"PRIx64", %lx, %p", this, media_id, lba,
	114	buffer_size, buffer);
	115
	116	r = efi_disk_rw_blocks(this, media_id, lba, buffer_size, real_buffer,
	117	EFI_DISK_READ);
	118
	119	/* Copy from bounce buffer to real buffer if necessary */
	120	if ((r == EFI_SUCCESS) && (real_buffer != buffer))
	121	memcpy(buffer, real_buffer, buffer_size);
	122
	123	return EFI_EXIT(r);
2a22d05d AG	124	}
2a22d05d AG	125
e275458c	126	static efi_status_t EFIAPI efi_disk_write_blocks(struct efi_block_io *this,
2a22d05d AG	127	u32 media_id, u64 lba, unsigned long buffer_size,
	128	void *buffer)
	129	{
51735ae0 AG	130	void *real_buffer = buffer;
	131	efi_status_t r;
	132
	133	#ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER
	134	if (buffer_size > EFI_LOADER_BOUNCE_BUFFER_SIZE) {
	135	r = efi_disk_write_blocks(this, media_id, lba,
	136	EFI_LOADER_BOUNCE_BUFFER_SIZE, buffer);
	137	if (r != EFI_SUCCESS)
	138	return r;
	139	return efi_disk_write_blocks(this, media_id, lba +
	140	EFI_LOADER_BOUNCE_BUFFER_SIZE / this->media->block_size,
	141	buffer_size - EFI_LOADER_BOUNCE_BUFFER_SIZE,
	142	buffer + EFI_LOADER_BOUNCE_BUFFER_SIZE);
	143	}
	144
	145	real_buffer = efi_bounce_buffer;
	146	#endif
	147
	148	EFI_ENTRY("%p, %x, %"PRIx64", %lx, %p", this, media_id, lba,
	149	buffer_size, buffer);
	150
	151	/* Populate bounce buffer if necessary */
	152	if (real_buffer != buffer)
	153	memcpy(real_buffer, buffer, buffer_size);
	154
	155	r = efi_disk_rw_blocks(this, media_id, lba, buffer_size, real_buffer,
	156	EFI_DISK_WRITE);
	157
	158	return EFI_EXIT(r);
2a22d05d AG	159	}
	160
	161	static efi_status_t EFIAPI efi_disk_flush_blocks(struct efi_block_io *this)
	162	{
	163	/* We always write synchronously */
	164	EFI_ENTRY("%p", this);
	165	return EFI_EXIT(EFI_SUCCESS);
	166	}
	167
	168	static const struct efi_block_io block_io_disk_template = {
	169	.reset = &efi_disk_reset,
	170	.read_blocks = &efi_disk_read_blocks,
	171	.write_blocks = &efi_disk_write_blocks,
	172	.flush_blocks = &efi_disk_flush_blocks,
	173	};
	174
487d756f SG	175	static void efi_disk_add_dev(const char *name,
487d756f SG	176	const char *if_typename,
884bcf6f	177	struct blk_desc *desc,
4a12a97c	178	int dev_index,
884bcf6f RC	179	lbaint_t offset,
884bcf6f RC	180	unsigned int part)
4a12a97c AG	181	{
4a12a97c AG	182	struct efi_disk_obj *diskobj;
4a12a97c	183
0812d1a0 AG	184	/* Don't add empty devices */
	185	if (!desc->lba)
	186	return;
	187
884bcf6f	188	diskobj = calloc(1, sizeof(*diskobj));
4a12a97c AG	189
4a12a97c AG	190	/* Fill in object data */
884bcf6f RC	191	diskobj->dp = efi_dp_from_part(desc, part);
884bcf6f RC	192	diskobj->part = part;
4a12a97c	193	diskobj->parent.protocols[0].guid = &efi_block_io_guid;
b5349f74	194	diskobj->parent.protocols[0].protocol_interface = &diskobj->ops;
4a12a97c	195	diskobj->parent.protocols[1].guid = &efi_guid_device_path;
884bcf6f	196	diskobj->parent.protocols[1].protocol_interface = diskobj->dp;
4a12a97c AG	197	diskobj->parent.handle = diskobj;
4a12a97c AG	198	diskobj->ops = block_io_disk_template;
487d756f	199	diskobj->ifname = if_typename;
4a12a97c	200	diskobj->dev_index = dev_index;
8c3df0bf	201	diskobj->offset = offset;
f9d334bd	202	diskobj->desc = desc;
4a12a97c AG	203
	204	/* Fill in EFI IO Media info (for read/write callbacks) */
	205	diskobj->media.removable_media = desc->removable;
	206	diskobj->media.media_present = 1;
	207	diskobj->media.block_size = desc->blksz;
	208	diskobj->media.io_align = desc->blksz;
0812d1a0	209	diskobj->media.last_block = desc->lba - offset;
4a12a97c AG	210	diskobj->ops.media = &diskobj->media;
4a12a97c AG	211
4a12a97c AG	212	/* Hook up to the device list */
	213	list_add_tail(&diskobj->parent.link, &efi_obj_list);
	214	}
	215
8c3df0bf	216	static int efi_disk_create_eltorito(struct blk_desc *desc,
487d756f	217	const char *if_typename,
f9d334bd AG	218	int diskid,
f9d334bd AG	219	const char *pdevname)
8c3df0bf AG	220	{
8c3df0bf AG	221	int disks = 0;
1acc0087	222	#if CONFIG_IS_ENABLED(ISO_PARTITION)
ecbe1a07	223	char devname[32] = { 0 }; /* dp->str is u16[32] long */
8c3df0bf AG	224	disk_partition_t info;
	225	int part = 1;
	226
	227	if (desc->part_type != PART_TYPE_ISO)
	228	return 0;
	229
884bcf6f	230	/* and devices for each partition: */
8c3df0bf	231	while (!part_get_info(desc, part, &info)) {
f9d334bd AG	232	snprintf(devname, sizeof(devname), "%s:%d", pdevname,
f9d334bd AG	233	part);
487d756f	234	efi_disk_add_dev(devname, if_typename, desc, diskid,
884bcf6f	235	info.start, part);
8c3df0bf AG	236	part++;
	237	disks++;
	238	}
884bcf6f RC	239
	240	/* ... and add block device: */
	241	efi_disk_add_dev(devname, if_typename, desc, diskid, 0, 0);
8c3df0bf AG	242	#endif
	243
	244	return disks;
	245	}
	246
2a22d05d AG	247	/*
	248	* U-Boot doesn't have a list of all online disk devices. So when running our
	249	* EFI payload, we scan through all of the potentially available ones and
	250	* store them in our object pool.
	251	*
487d756f SG	252	* TODO([email protected]): Actually with CONFIG_BLK, U-Boot does have this.
	253	* Consider converting the code to look up devices as needed. The EFI device
	254	* could be a child of the UCLASS_BLK block device, perhaps.
	255	*
2a22d05d AG	256	* This gets called from do_bootefi_exec().
	257	*/
	258	int efi_disk_register(void)
	259	{
2a22d05d	260	int disks = 0;
487d756f SG	261	#ifdef CONFIG_BLK
	262	struct udevice *dev;
	263
70bfcdc6	264	for (uclass_first_device_check(UCLASS_BLK, &dev);
487d756f	265	dev;
70bfcdc6	266	uclass_next_device_check(&dev)) {
487d756f SG	267	struct blk_desc *desc = dev_get_uclass_platdata(dev);
487d756f SG	268	const char *if_typename = dev->driver->name;
884bcf6f RC	269	disk_partition_t info;
884bcf6f RC	270	int part = 1;
487d756f SG	271
487d756f SG	272	printf("Scanning disk %s...\n", dev->name);
884bcf6f RC	273
	274	/* add devices for each partition: */
	275	while (!part_get_info(desc, part, &info)) {
	276	efi_disk_add_dev(dev->name, if_typename, desc,
	277	desc->devnum, 0, part);
	278	part++;
	279	}
	280
	281	/* ... and add block device: */
	282	efi_disk_add_dev(dev->name, if_typename, desc,
	283	desc->devnum, 0, 0);
	284
487d756f SG	285	disks++;
	286
	287	/*
	288	* El Torito images show up as block devices in an EFI world,
	289	* so let's create them here
	290	*/
	291	disks += efi_disk_create_eltorito(desc, if_typename,
f9d334bd	292	desc->devnum, dev->name);
487d756f SG	293	}
	294	#else
	295	int i, if_type;
2a22d05d AG	296
2a22d05d AG	297	/* Search for all available disk devices */
6dd9faf8	298	for (if_type = 0; if_type < IF_TYPE_COUNT; if_type++) {
487d756f SG	299	const struct blk_driver *cur_drvr;
	300	const char *if_typename;
	301
6dd9faf8 SG	302	cur_drvr = blk_driver_lookup_type(if_type);
	303	if (!cur_drvr)
	304	continue;
	305
487d756f SG	306	if_typename = cur_drvr->if_typename;
487d756f SG	307	printf("Scanning disks on %s...\n", if_typename);
2a22d05d AG	308	for (i = 0; i < 4; i++) {
2a22d05d AG	309	struct blk_desc *desc;
ecbe1a07	310	char devname[32] = { 0 }; /* dp->str is u16[32] long */
2a22d05d	311
6dd9faf8	312	desc = blk_get_devnum_by_type(if_type, i);
2a22d05d AG	313	if (!desc)
	314	continue;
	315	if (desc->type == DEV_TYPE_UNKNOWN)
	316	continue;
	317
2a22d05d	318	snprintf(devname, sizeof(devname), "%s%d",
487d756f	319	if_typename, i);
884bcf6f	320	efi_disk_add_dev(devname, if_typename, desc, i, 0, 0);
2a22d05d	321	disks++;
8c3df0bf AG	322
	323	/*
	324	* El Torito images show up as block devices
	325	* in an EFI world, so let's create them here
	326	*/
f9d334bd AG	327	disks += efi_disk_create_eltorito(desc, if_typename,
f9d334bd AG	328	i, devname);
2a22d05d AG	329	}
2a22d05d AG	330	}
487d756f	331	#endif
2a22d05d AG	332	printf("Found %d disks\n", disks);
	333
	334	return 0;
	335	}