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 and efi_embedded_fw_list are private to the efi-embedded fw
12  * implementation 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 extern struct list_head efi_embedded_fw_list;
22 
23 /**
24  * struct efi_embedded_fw_desc - This struct is used by the EFI embedded-fw
25  *                               code to search for embedded firmwares.
26  *
27  * @name:   Name to register the firmware with if found
28  * @prefix: First 8 bytes of the firmware
29  * @length: Length of the firmware in bytes including prefix
30  * @sha256: SHA256 of the firmware
31  */
32 struct efi_embedded_fw_desc {
33 	const char *name;
34 	u8 prefix[EFI_EMBEDDED_FW_PREFIX_LEN];
35 	u32 length;
36 	u8 sha256[32];
37 };
38 
39 extern const struct dmi_system_id touchscreen_dmi_table[];
40 
41 int efi_get_embedded_fw(const char *name, const u8 **dat, size_t *sz);
42 
43 #endif
44