efi_loader: rename parent to header

Rename the component parent of some EFI objects to header. This avoids
misunderstandings.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>

cmd/bootefi.c

@@ -418,7 +418,7 @@ static efi_status_t do_bootefi_exec(void *efi,
 
 		/* Move into EL2 and keep running there */
 		armv8_switch_to_el2((ulong)entry,
-				    (ulong)&image_obj->parent,
+				    (ulong)&image_obj->header,
 				    (ulong)&systab, 0, (ulong)efi_run_in_el2,
 				    ES_TO_AARCH64);
 
@@ -435,7 +435,7 @@ static efi_status_t do_bootefi_exec(void *efi,
 		secure_ram_addr(_do_nonsec_entry)(
 					efi_run_in_hyp,
 					(uintptr_t)entry,
-					(uintptr_t)&image_obj->parent,
+					(uintptr_t)&image_obj->header,
 					(uintptr_t)&systab);
 
 		/* Should never reach here, efi exits with longjmp */
@@ -443,12 +443,12 @@ static efi_status_t do_bootefi_exec(void *efi,
 	}
 #endif
 
-	ret = efi_do_enter(&image_obj->parent, &systab, entry);
+	ret = efi_do_enter(&image_obj->header, &systab, entry);
 
 exit:
 	/* image has returned, loaded-image obj goes *poof*: */
 	if (image_obj)
-		efi_delete_handle(&image_obj->parent);
+		efi_delete_handle(&image_obj->header);
 	if (mem_handle)
 		efi_delete_handle(mem_handle);
 
@@ -546,10 +546,10 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 		/* Transfer environment variable efi_selftest as load options */
 		set_load_options(loaded_image_info, "efi_selftest");
 		/* Execute the test */
-		r = efi_selftest(&image_obj->parent, &systab);
+		r = efi_selftest(&image_obj->header, &systab);
 		efi_restore_gd();
 		free(loaded_image_info->load_options);
-		efi_delete_handle(&image_obj->parent);
+		efi_delete_handle(&image_obj->header);
 		return r != EFI_SUCCESS;
 	} else
 #endif

include/efi_loader.h

@@ -193,10 +193,15 @@ struct efi_object {
 
 /**
  * struct efi_loaded_image_obj - handle of a loaded image
+ *
+ * @header:		EFI object header
+ * @reloc_base:		base address for the relocated image
+ * @reloc_size:		size of the relocated image
+ * @exit_jmp:		long jump buffer for returning form started image
+ * @entry:		entry address of the relocated image
  */
 struct efi_loaded_image_obj {
-	/* Generic EFI object parent class data */
+	struct efi_object header;
-	struct efi_object parent;
 	void *reloc_base;
 	aligned_u64 reloc_size;
 	efi_status_t exit_status;

lib/efi_loader/efi_boottime.c

@@ -1518,7 +1518,7 @@ efi_status_t efi_setup_loaded_image(struct efi_device_path *device_path,
 	}
 
 	/* Add internal object to object list */
-	efi_add_handle(&obj->parent);
+	efi_add_handle(&obj->header);
 
 	if (info_ptr)
 		*info_ptr = info;
@@ -1535,7 +1535,7 @@ efi_status_t efi_setup_loaded_image(struct efi_device_path *device_path,
 		 * When asking for the device path interface, return
 		 * bootefi_device_path
 		 */
-		ret = efi_add_protocol(&obj->parent,
+		ret = efi_add_protocol(&obj->header,
 				       &efi_guid_device_path, device_path);
 		if (ret != EFI_SUCCESS)
 			goto failure;
@@ -1545,7 +1545,7 @@ efi_status_t efi_setup_loaded_image(struct efi_device_path *device_path,
 	 * When asking for the loaded_image interface, just
 	 * return handle which points to loaded_image_info
 	 */
-	ret = efi_add_protocol(&obj->parent,
+	ret = efi_add_protocol(&obj->header,
 			       &efi_guid_loaded_image, info);
 	if (ret != EFI_SUCCESS)
 		goto failure;

lib/efi_loader/efi_disk.c

@@ -14,26 +14,30 @@
 
 const efi_guid_t efi_block_io_guid = BLOCK_IO_GUID;
 
+/**
+ * struct efi_disk_obj - EFI disk object
+ *
+ * @header:	EFI object header
+ * @ops:	EFI disk I/O protocol interface
+ * @ifname:	interface name for block device
+ * @dev_index:	device index of block device
+ * @media:	block I/O media information
+ * @dp:		device path to the block device
+ * @part:	partition
+ * @volume:	simple file system protocol of the partition
+ * @offset:	offset into disk for simple partition
+ * @desc:	internal block device descriptor
+ */
 struct efi_disk_obj {
-	/* Generic EFI object parent class data */
+	struct efi_object header;
-	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;
-	/* 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 */
 	struct blk_desc *desc;
 };
 
@@ -246,7 +250,7 @@ static efi_status_t efi_disk_add_dev(
 		return EFI_OUT_OF_RESOURCES;
 
 	/* Hook up to the device list */
-	efi_add_handle(&diskobj->parent);
+	efi_add_handle(&diskobj->header);
 
 	/* Fill in object data */
 	if (part) {
@@ -258,18 +262,18 @@ static efi_status_t efi_disk_add_dev(
 		diskobj->dp = efi_dp_from_part(desc, part);
 	}
 	diskobj->part = part;
-	ret = efi_add_protocol(&diskobj->parent, &efi_block_io_guid,
+	ret = efi_add_protocol(&diskobj->header, &efi_block_io_guid,
 			       &diskobj->ops);
 	if (ret != EFI_SUCCESS)
 		return ret;
-	ret = efi_add_protocol(&diskobj->parent, &efi_guid_device_path,
+	ret = efi_add_protocol(&diskobj->header, &efi_guid_device_path,
 			       diskobj->dp);
 	if (ret != EFI_SUCCESS)
 		return ret;
 	if (part >= 1) {
 		diskobj->volume = efi_simple_file_system(desc, part,
 							 diskobj->dp);
-		ret = efi_add_protocol(&diskobj->parent,
+		ret = efi_add_protocol(&diskobj->header,
 				       &efi_simple_file_system_protocol_guid,
 				       diskobj->volume);
 		if (ret != EFI_SUCCESS)
@@ -381,7 +385,7 @@ efi_status_t efi_disk_register(void)
 
 		/* Partitions show up as block devices in EFI */
 		disks += efi_disk_create_partitions(
-					&disk->parent, desc, if_typename,
+					&disk->header, desc, if_typename,
 					desc->devnum, dev->name);
 	}
 #else
@@ -427,7 +431,7 @@ efi_status_t efi_disk_register(void)
 
 			/* Partitions show up as block devices in EFI */
 			disks += efi_disk_create_partitions
-						(&disk->parent, desc,
+						(&disk->header, desc,
 						 if_typename, i, devname);
 		}
 	}

lib/efi_loader/efi_gop.c

@@ -16,15 +16,22 @@ DECLARE_GLOBAL_DATA_PTR;
 
 static const efi_guid_t efi_gop_guid = EFI_GOP_GUID;
 
+/**
+ * struct efi_gop_obj - graphical output protocol object
+ *
+ * @header:	EFI object header
+ * @ops:	graphical output protocol interface
+ * @info:	graphical output mode information
+ * @mode:	graphical output mode
+ * @bpix:	bits per pixel
+ * @fb:		frame buffer
+ */
 struct efi_gop_obj {
-	/* Generic EFI object parent class data */
+	struct efi_object header;
-	struct efi_object parent;
-	/* EFI Interface callback struct for gop */
 	struct efi_gop ops;
-	/* The only mode we support */
 	struct efi_gop_mode_info info;
 	struct efi_gop_mode mode;
-	/* Fields we only have acces to during init */
+	/* Fields we only have access to during init */
 	u32 bpix;
 	void *fb;
 };
@@ -439,10 +446,10 @@ efi_status_t efi_gop_register(void)
 	}
 
 	/* Hook up to the device list */
-	efi_add_handle(&gopobj->parent);
+	efi_add_handle(&gopobj->header);
 
 	/* Fill in object data */
-	ret = efi_add_protocol(&gopobj->parent, &efi_gop_guid,
+	ret = efi_add_protocol(&gopobj->header, &efi_gop_guid,
 			       &gopobj->ops);
 	if (ret != EFI_SUCCESS) {
 		printf("ERROR: Failure adding gop protocol\n");

lib/efi_loader/efi_net.c

@@ -24,13 +24,19 @@ static struct efi_event *network_timer_event;
  */
 static struct efi_event *wait_for_packet;
 
+/**
+ * struct efi_net_obj - EFI object representing a network interface
+ *
+ * @header:	EFI object header
+ * @net:	simple network protocol interface
+ * @net_mode:	status of the network interface
+ * @pxe:	PXE base code protocol interface
+ * @pxe_mode:	status of the PXE base code protocol
+ */
 struct efi_net_obj {
-	/* Generic EFI object parent class data */
+	struct efi_object header;
-	struct efi_object parent;
-	/* EFI Interface callback struct for network */
 	struct efi_simple_network net;
 	struct efi_simple_network_mode net_mode;
-	/* PXE struct to transmit dhcp data */
 	struct efi_pxe pxe;
 	struct efi_pxe_mode pxe_mode;
 };
@@ -325,18 +331,18 @@ efi_status_t efi_net_register(void)
 	}
 
 	/* Hook net up to the device list */
-	efi_add_handle(&netobj->parent);
+	efi_add_handle(&netobj->header);
 
 	/* Fill in object data */
-	r = efi_add_protocol(&netobj->parent, &efi_net_guid,
+	r = efi_add_protocol(&netobj->header, &efi_net_guid,
 			     &netobj->net);
 	if (r != EFI_SUCCESS)
 		goto failure_to_add_protocol;
-	r = efi_add_protocol(&netobj->parent, &efi_guid_device_path,
+	r = efi_add_protocol(&netobj->header, &efi_guid_device_path,
 			     efi_dp_from_eth());
 	if (r != EFI_SUCCESS)
 		goto failure_to_add_protocol;
-	r = efi_add_protocol(&netobj->parent, &efi_pxe_guid,
+	r = efi_add_protocol(&netobj->header, &efi_pxe_guid,
 			     &netobj->pxe);
 	if (r != EFI_SUCCESS)
 		goto failure_to_add_protocol;