[U-Boot] [RFC v2 01/11] efi_loader: boottime: add loaded image device path protocol to image handle
AKASHI Takahiro
takahiro.akashi at linaro.org
Wed Mar 27 04:40:32 UTC 2019
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 at linaro.org>
---
include/efi_api.h | 4 ++++
include/efi_loader.h | 1 +
lib/efi_loader/efi_boottime.c | 19 ++++++++++++-------
lib/efi_loader/efi_image_loader.c | 2 ++
4 files changed, 19 insertions(+), 7 deletions(-)
diff --git a/include/efi_api.h b/include/efi_api.h
index ccf608653d4a..63b703c951a7 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 512880ab8fbf..3f54e354bdcd 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 391681260c27..578b32a05ffd 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -1519,6 +1519,7 @@ 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;
@@ -1542,15 +1543,19 @@ 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 fe66e7b9ffe1..c6177b9ff832 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;
--
2.20.1
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