1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_PURGATORY_H
3 #define _LINUX_PURGATORY_H
4
5 #include <linux/types.h>
6 #include <crypto/sha2.h>
7 #include <uapi/linux/kexec.h>
8
9 struct kexec_sha_region {
10 unsigned long start;
11 unsigned long len;
12 };
13
14 /*
15 * These forward declarations serve two purposes:
16 *
17 * 1) Make sparse happy when checking arch/purgatory
18 * 2) Document that these are required to be global so the symbol
19 * lookup in kexec works
20 */
21 extern struct kexec_sha_region purgatory_sha_regions[KEXEC_SEGMENT_MAX];
22 extern u8 purgatory_sha256_digest[SHA256_DIGEST_SIZE];
23
24 #endif
25
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