/* 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;
+ struct efi_device_path *dp;
+ /* partition # */
+ unsigned int part;
+ /* handle to filesys proto (for partition objects) */
+ struct efi_simple_file_system_protocol *volume;
/* Offset into disk for simple partitions */
lbaint_t offset;
/* Internal block device */
- const struct blk_desc *desc;
+ struct blk_desc *desc;
};
static efi_status_t EFIAPI efi_disk_reset(struct efi_block_io *this,
EFI_DISK_WRITE,
};
-static efi_status_t EFIAPI efi_disk_rw_blocks(struct efi_block_io *this,
+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)
{
.flush_blocks = &efi_disk_flush_blocks,
};
+/*
+ * Find filesystem from a device-path. The passed in path 'p' probably
+ * contains one or more /File(name) nodes, so the comparison stops at
+ * the first /File() node, and returns the pointer to that via 'rp'.
+ * This is mostly intended to be a helper to map a device-path to an
+ * efi_file_handle object.
+ */
+struct efi_simple_file_system_protocol *
+efi_fs_from_path(struct efi_device_path *fp)
+{
+ struct efi_object *efiobj;
+ struct efi_disk_obj *diskobj;
+
+ efiobj = efi_dp_find_obj(fp, NULL);
+ if (!efiobj)
+ return NULL;
+
+ diskobj = container_of(efiobj, struct efi_disk_obj, parent);
+
+ return diskobj->volume;
+}
+
+/*
+ * Create a device for a disk
+ *
+ * @name not used
+ * @if_typename interface name for block device
+ * @desc internal block device
+ * @dev_index device index for block device
+ * @offset offset into disk for simple partitions
+ */
static void efi_disk_add_dev(const char *name,
const char *if_typename,
- const struct blk_desc *desc,
+ struct blk_desc *desc,
int dev_index,
- lbaint_t offset)
+ lbaint_t offset,
+ unsigned int part)
{
struct efi_disk_obj *diskobj;
- struct efi_device_path_file_path *dp;
- int objlen = sizeof(*diskobj) + (sizeof(*dp) * 2);
+ efi_status_t ret;
/* Don't add empty devices */
if (!desc->lba)
return;
- diskobj = calloc(1, objlen);
+ diskobj = calloc(1, sizeof(*diskobj));
+ if (!diskobj)
+ goto out_of_memory;
+
+ /* Hook up to the device list */
+ efi_add_handle(&diskobj->parent);
/* 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->dp = efi_dp_from_part(desc, part);
+ diskobj->part = part;
+ ret = efi_add_protocol(diskobj->parent.handle, &efi_block_io_guid,
+ &diskobj->ops);
+ if (ret != EFI_SUCCESS)
+ goto out_of_memory;
+ ret = efi_add_protocol(diskobj->parent.handle, &efi_guid_device_path,
+ diskobj->dp);
+ if (ret != EFI_SUCCESS)
+ goto out_of_memory;
+ if (part >= 1) {
+ diskobj->volume = efi_simple_file_system(desc, part,
+ diskobj->dp);
+ ret = efi_add_protocol(diskobj->parent.handle,
+ &efi_simple_file_system_protocol_guid,
+ &diskobj->volume);
+ if (ret != EFI_SUCCESS)
+ goto out_of_memory;
+ }
diskobj->ops = block_io_disk_template;
diskobj->ifname = if_typename;
diskobj->dev_index = dev_index;
diskobj->media.block_size = desc->blksz;
diskobj->media.io_align = desc->blksz;
diskobj->media.last_block = desc->lba - offset;
+ if (part != 0)
+ diskobj->media.logical_partition = 1;
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);
+ return;
+out_of_memory:
+ printf("ERROR: Out of memory\n");
}
-static int efi_disk_create_eltorito(struct blk_desc *desc,
- const char *if_typename,
- int diskid,
- const char *pdevname)
+static int efi_disk_create_partitions(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;
+ int part;
- if (desc->part_type != PART_TYPE_ISO)
- return 0;
-
- while (!part_get_info(desc, part, &info)) {
+ /* Add devices for each partition */
+ for (part = 1; part <= MAX_SEARCH_PARTITIONS; part++) {
+ if (part_get_info(desc, part, &info))
+ continue;
snprintf(devname, sizeof(devname), "%s:%d", pdevname,
part);
efi_disk_add_dev(devname, if_typename, desc, diskid,
- info.start);
- part++;
+ info.start, part);
disks++;
}
-#endif
return disks;
}
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);
+
+ /* Add block device for the full 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);
+ /* Partitions show up as block devices in EFI */
+ disks += efi_disk_create_partitions(desc, if_typename,
+ desc->devnum, dev->name);
}
#else
int i, if_type;
snprintf(devname, sizeof(devname), "%s%d",
if_typename, i);
- efi_disk_add_dev(devname, if_typename, desc, i, 0);
+
+ /* Add block device for the full device */
+ 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);
+ /* Partitions show up as block devices in EFI */
+ disks += efi_disk_create_partitions(desc, if_typename,
+ i, devname);
}
}
#endif
projects / people / ms / u-boot.git / blobdiff