1 // SPDX-License-Identifier: GPL-2.0+
7  * The EFI uclass creates a handle for this driver and installs the
14  * new U-Boot block device. It installs child handles for all partitions and
22  * U-Boot loads the iPXE snp.efi executable. iPXE connects an iSCSI drive and
23  * exposes a handle with the block IO protocol. It calls ConnectController.
32 #include <dm/device-internal.h>
38  * handle	handle of the controller on which this driver is installed
42 	efi_handle_t		handle;  member
47  * Read from block device
49  * @dev		device
59 	struct efi_block_io *io = platdata->io;  in efi_bl_read()
63 		  __func__, dev->name, blknr, blkcnt);  in efi_bl_read()
64 	ret = EFI_CALL(io->read_blocks(  in efi_bl_read()
65 				io, io->media->media_id, (u64)blknr,  in efi_bl_read()
67 				(efi_uintn_t)io->media->block_size, buffer));  in efi_bl_read()
76  * Write to block device
78  * @dev		device
88 	struct efi_block_io *io = platdata->io;  in efi_bl_write()
92 		  __func__, dev->name, blknr, blkcnt);  in efi_bl_write()
93 	ret = EFI_CALL(io->write_blocks(  in efi_bl_write()
94 				io, io->media->media_id, (u64)blknr,  in efi_bl_write()
96 				(efi_uintn_t)io->media->block_size,  in efi_bl_write()
106  * Create partions for the block device.
108  * @handle	EFI handle of the block device
109  * @dev		udevice of the block device
111 static int efi_bl_bind_partitions(efi_handle_t handle, struct udevice *dev)  in efi_bl_bind_partitions()  argument
117 	if_typename = blk_get_if_type_name(desc->if_type);  in efi_bl_bind_partitions()
119 	return efi_disk_create_partitions(handle, desc, if_typename,  in efi_bl_bind_partitions()
120 					  desc->devnum, dev->name);  in efi_bl_bind_partitions()
124  * Create a block device for a handle
126  * @handle	handle
130 static int efi_bl_bind(efi_handle_t handle, void *interface)  in efi_bl_bind()  argument
135 	struct efi_object *obj = efi_search_obj(handle);  in efi_bl_bind()
140 	EFI_PRINT("%s: handle %p, interface %p\n", __func__, handle, io);  in efi_bl_bind()
143 		return -ENOENT;  in efi_bl_bind()
146 	if (devnum == -ENODEV)  in efi_bl_bind()
153 		return -ENOMEM;  in efi_bl_bind()
156 	/* Create driver model udevice for the EFI block io device */  in efi_bl_bind()
158 				io->media->block_size,  in efi_bl_bind()
159 				(lbaint_t)io->media->last_block, &bdev);  in efi_bl_bind()
163 		return -ENOENT;  in efi_bl_bind()
168 	platdata->handle = handle;  in efi_bl_bind()
169 	platdata->io = interface;  in efi_bl_bind()
174 	EFI_PRINT("%s: block device '%s' created\n", __func__, bdev->name);  in efi_bl_bind()
176 	/* Create handles for the partions of the block device */  in efi_bl_bind()
177 	disks = efi_bl_bind_partitions(handle, bdev);  in efi_bl_bind()
183 /* Block device driver operators */
189 /* Identify as block device driver */