1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_EFI_EMBEDDED_FW_H
3 #define _LINUX_EFI_EMBEDDED_FW_H
4 
5 #include <linux/list.h>
6 #include <linux/mod_devicetable.h>
7 
8 #define EFI_EMBEDDED_FW_PREFIX_LEN		8
9 
10 /*
11  * This struct is private to the efi-embedded fw implementation.
12  * They are in this header for use by lib/test_firmware.c only!
13  */
14 struct efi_embedded_fw {
15 	struct list_head list;
16 	const char *name;
17 	const u8 *data;
18 	size_t length;
19 };
20 
21 /**
22  * struct efi_embedded_fw_desc - This struct is used by the EFI embedded-fw
23  *                               code to search for embedded firmwares.
24  *
25  * @name:   Name to register the firmware with if found
26  * @prefix: First 8 bytes of the firmware
27  * @length: Length of the firmware in bytes including prefix
28  * @sha256: SHA256 of the firmware
29  */
30 struct efi_embedded_fw_desc {
31 	const char *name;
32 	u8 prefix[EFI_EMBEDDED_FW_PREFIX_LEN];
33 	u32 length;
34 	u8 sha256[32];
35 };
36 
37 extern const struct dmi_system_id touchscreen_dmi_table[];
38 
39 int efi_get_embedded_fw(const char *name, const u8 **dat, size_t *sz);
40 
41 #endif
42