From: AKASHI Takahiro <takahiro.akashi@linaro.org>
Date: Wed, 27 Mar 2019 04:40:32 +0000 (+0900)
Subject: efi_loader: boottime: add loaded image device path protocol to image handle
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=bc8fc32855d27b2999ed6667af10123f341b3159;p=u-boot.git

efi_loader: boottime: add loaded image device path protocol to image handle

To meet UEFI spec v2.7a section 9.2, we should add
EFI_LOADED_IMAGE_DEVICE_PATH_PROTOCOL to image handle,
instead of EFI_DEVICE_PATH_PROTOCOL.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---

diff --git a/include/efi_api.h b/include/efi_api.h
index 8647bfa662..5b0a100635 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -333,6 +333,10 @@ struct efi_system_table {
 	EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, \
 		 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
 
+#define LOADED_IMAGE_DEVICE_PATH_GUID \
+	EFI_GUID(0xbc62157e, 0x3e33, 0x4fec, \
+		 0x99, 0x20, 0x2d, 0x3b, 0x36, 0xd7, 0x50, 0xdf)
+
 #define EFI_LOADED_IMAGE_PROTOCOL_REVISION 0x1000
 
 struct efi_loaded_image {
diff --git a/include/efi_loader.h b/include/efi_loader.h
index 9f776021ab..cd6ceaccbf 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -135,6 +135,7 @@ extern const efi_guid_t efi_guid_event_group_reset_system;
 /* GUID of the device tree table */
 extern const efi_guid_t efi_guid_fdt;
 extern const efi_guid_t efi_guid_loaded_image;
+extern const efi_guid_t efi_guid_loaded_image_device_path;
 extern const efi_guid_t efi_guid_device_path_to_text_protocol;
 extern const efi_guid_t efi_simple_file_system_protocol_guid;
 extern const efi_guid_t efi_file_info_guid;
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 970c01614e..a903260633 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -1522,6 +1522,7 @@ efi_status_t efi_setup_loaded_image(struct efi_device_path *device_path,
 	efi_status_t ret;
 	struct efi_loaded_image *info = NULL;
 	struct efi_loaded_image_obj *obj = NULL;
+	struct efi_device_path *dp;
 
 	/* In case of EFI_OUT_OF_RESOURCES avoid illegal free by caller. */
 	*handle_ptr = NULL;
@@ -1545,15 +1546,19 @@ efi_status_t efi_setup_loaded_image(struct efi_device_path *device_path,
 
 	if (device_path) {
 		info->device_handle = efi_dp_find_obj(device_path, NULL);
-		/*
-		 * When asking for the device path interface, return
-		 * bootefi_device_path
-		 */
-		ret = efi_add_protocol(&obj->header,
-				       &efi_guid_device_path, device_path);
-		if (ret != EFI_SUCCESS)
+
+		dp = efi_dp_append(device_path, file_path);
+		if (!dp) {
+			ret = EFI_OUT_OF_RESOURCES;
 			goto failure;
+		}
+	} else {
+		dp = NULL;
 	}
+	ret = efi_add_protocol(&obj->header,
+			       &efi_guid_loaded_image_device_path, dp);
+	if (ret != EFI_SUCCESS)
+		goto failure;
 
 	/*
 	 * When asking for the loaded_image interface, just
diff --git a/lib/efi_loader/efi_image_loader.c b/lib/efi_loader/efi_image_loader.c
index 6101e6d037..93feefd366 100644
--- a/lib/efi_loader/efi_image_loader.c
+++ b/lib/efi_loader/efi_image_loader.c
@@ -14,6 +14,8 @@
 const efi_guid_t efi_global_variable_guid = EFI_GLOBAL_VARIABLE_GUID;
 const efi_guid_t efi_guid_device_path = DEVICE_PATH_GUID;
 const efi_guid_t efi_guid_loaded_image = LOADED_IMAGE_GUID;
+const efi_guid_t efi_guid_loaded_image_device_path
+		= LOADED_IMAGE_DEVICE_PATH_GUID;
 const efi_guid_t efi_simple_file_system_protocol_guid =
 		EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID;
 const efi_guid_t efi_file_info_guid = EFI_FILE_INFO_GUID;