efi_loader: add device-path utils
Helpers to construct device-paths from devices, partitions, files, and
for parsing and manipulating device-paths.
For non-legacy devices, this will use u-boot's device-model to construct
device-paths which include bus hierarchy to construct device-paths. For
legacy devices we still fake it, but slightly more convincingly.
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/include/efi_api.h b/include/efi_api.h
index b761cf4..4e27c82 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -314,6 +314,7 @@
#define DEVICE_PATH_TYPE_MESSAGING_DEVICE 0x03
# define DEVICE_PATH_SUB_TYPE_MSG_USB 0x05
# define DEVICE_PATH_SUB_TYPE_MSG_MAC_ADDR 0x0b
+# define DEVICE_PATH_SUB_TYPE_MSG_USB_CLASS 0x0f
# define DEVICE_PATH_SUB_TYPE_MSG_SD 0x1a
# define DEVICE_PATH_SUB_TYPE_MSG_MMC 0x1d
@@ -329,6 +330,15 @@
u8 if_type;
} __packed;
+struct efi_device_path_usb_class {
+ struct efi_device_path dp;
+ u16 vendor_id;
+ u16 product_id;
+ u8 device_class;
+ u8 device_subclass;
+ u8 device_protocol;
+} __packed;
+
struct efi_device_path_sd_mmc_path {
struct efi_device_path dp;
u8 slot_number;