include/linux/purgatory.h

   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