diff --git a/arch/arm/mach-mediatek/mt7623/preloader.h b/arch/arm/mach-mediatek/mt7623/preloader.h
new file mode 100644
index 0000000..2d2c71a
--- /dev/null
+++ b/arch/arm/mach-mediatek/mt7623/preloader.h
@@ -0,0 +1,99 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2018 MediaTek Inc.
+ */
+
+#ifndef __PRELOADER_H_
+#define __PRELOADER_H_
+
+enum forbidden_mode {
+	F_FACTORY_MODE = 0x0001
+};
+
+union lk_hdr {
+	struct {
+		u32 magic;
+		u32 size;
+		char name[32];
+		u32 loadaddr;
+	};
+
+	u8 data[512];
+};
+
+struct sec_limit {
+	unsigned int magic_num;
+	enum forbidden_mode forbid_mode;
+};
+
+enum bootmode {
+	NORMAL_BOOT = 0,
+	META_BOOT = 1,
+	RECOVERY_BOOT = 2,
+	SW_REBOOT = 3,
+	FACTORY_BOOT = 4,
+	ADVMETA_BOOT = 5,
+	ATE_FACTORY_BOOT = 6,
+	ALARM_BOOT = 7,
+
+	KERNEL_POWER_OFF_CHARGING_BOOT = 8,
+	LOW_POWER_OFF_CHARGING_BOOT = 9,
+
+	FAST_BOOT = 99,
+	DOWNLOAD_BOOT = 100,
+	UNKNOWN_BOOT
+};
+
+enum boot_reason {
+	BR_POWER_KEY = 0,
+	BR_USB,
+	BR_RTC,
+	BR_WDT,
+	BR_WDT_BY_PASS_PWK,
+	BR_TOOL_BY_PASS_PWK,
+	BR_2SEC_REBOOT,
+	BR_UNKNOWN
+};
+
+enum meta_com_type {
+	META_UNKNOWN_COM = 0,
+	META_UART_COM,
+	META_USB_COM
+};
+
+struct da_info_t {
+	u32 addr;
+	u32 arg1;
+	u32 arg2;
+	u32 len;
+	u32 sig_len;
+};
+
+struct boot_argument {
+	u32 magic;
+	enum bootmode boot_mode;
+	u32 e_flag;
+	u32 log_port;
+	u32 log_baudrate;
+	u8 log_enable;
+	u8 part_num;
+	u8 reserved[2];
+	u32 dram_rank_num;
+	u32 dram_rank_size[4];
+	u32 boot_reason;
+	enum meta_com_type meta_com_type;
+	u32 meta_com_id;
+	u32 boot_time;
+	struct da_info_t da_info;
+	struct sec_limit sec_limit;
+	union lk_hdr *part_info;
+	u8 md_type[4];
+	u32 ddr_reserve_enable;
+	u32 ddr_reserve_success;
+	u32 chip_ver;
+	char pl_version[8];
+};
+
+#define BOOT_ARGUMENT_MAGIC	0x504c504c
+
+#endif /* __PRELOADER_H_ */