1 files changed, 86 insertions, 0 deletions
diff --git a/src/boot/efi/proto/device-path.h b/src/boot/efi/proto/device-path.h
new file mode 100644
index 0000000..0fabae1
--- /dev/null
+++ b/src/boot/efi/proto/device-path.h
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include "efi.h"
+
+#define EFI_DEVICE_PATH_PROTOCOL_GUID \
+        GUID_DEF(0x09576e91, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
+#define EFI_DEVICE_PATH_TO_TEXT_PROTOCOL_GUID \
+        GUID_DEF(0x8b843e20, 0x8132, 0x4852, 0x90, 0xcc, 0x55, 0x1a, 0x4e, 0x4a, 0x7f, 0x1c)
+#define EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL_GUID \
+        GUID_DEF(0x05c99a21, 0xc70f, 0x4ad2, 0x8a, 0x5f, 0x35, 0xdf, 0x33, 0x43, 0xf5, 0x1e)
+
+/* Device path types. */
+enum {
+        HARDWARE_DEVICE_PATH  = 0x01,
+        ACPI_DEVICE_PATH      = 0x02,
+        MESSAGING_DEVICE_PATH = 0x03,
+        MEDIA_DEVICE_PATH     = 0x04,
+        BBS_DEVICE_PATH       = 0x05,
+        END_DEVICE_PATH_TYPE  = 0x7f,
+};
+
+/* Device path sub-types. */
+enum {
+        END_INSTANCE_DEVICE_PATH_SUBTYPE = 0x01,
+        END_ENTIRE_DEVICE_PATH_SUBTYPE   = 0xff,
+
+        MEDIA_HARDDRIVE_DP               = 0x01,
+        MEDIA_VENDOR_DP                  = 0x03,
+        MEDIA_FILEPATH_DP                = 0x04,
+        MEDIA_PIWG_FW_FILE_DP            = 0x06,
+        MEDIA_PIWG_FW_VOL_DP             = 0x07,
+};
+
+struct _packed_ EFI_DEVICE_PATH_PROTOCOL {
+        uint8_t Type;
+        uint8_t SubType;
+        uint16_t Length;
+};
+
+typedef struct {
+        EFI_DEVICE_PATH Header;
+        EFI_GUID Guid;
+} _packed_ VENDOR_DEVICE_PATH;
+
+#define MBR_TYPE_PCAT                        0x01U
+#define MBR_TYPE_EFI_PARTITION_TABLE_HEADER  0x02U
+#define NO_DISK_SIGNATURE    0x00U
+#define SIGNATURE_TYPE_MBR   0x01U
+#define SIGNATURE_TYPE_GUID  0x02U
+
+typedef struct {
+        EFI_DEVICE_PATH Header;
+        uint32_t PartitionNumber;
+        uint64_t PartitionStart;
+        uint64_t PartitionSize;
+        union {
+                uint8_t Signature[16];
+                EFI_GUID SignatureGuid;
+        };
+        uint8_t MBRType;
+        uint8_t SignatureType;
+} _packed_ HARDDRIVE_DEVICE_PATH;
+
+typedef struct {
+        EFI_DEVICE_PATH Header;
+        char16_t PathName[];
+} _packed_ FILEPATH_DEVICE_PATH;
+
+typedef struct {
+        char16_t* (EFIAPI *ConvertDeviceNodeToText)(
+                        const EFI_DEVICE_PATH *DeviceNode,
+                        bool DisplayOnly,
+                        bool AllowShortcuts);
+        char16_t* (EFIAPI *ConvertDevicePathToText)(
+                        const EFI_DEVICE_PATH *DevicePath,
+                        bool DisplayOnly,
+                        bool AllowShortcuts);
+} EFI_DEVICE_PATH_TO_TEXT_PROTOCOL;
+
+typedef struct {
+        EFI_DEVICE_PATH* (EFIAPI *ConvertTextToDevicNode)(
+                        const char16_t *TextDeviceNode);
+        EFI_DEVICE_PATH* (EFIAPI *ConvertTextToDevicPath)(
+                        const char16_t *ConvertTextToDevicPath);
+} EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL;