/* SPDX-License-Identifier: GPL-2.0 */

  #ifndef _LINUX_PURGATORY_H
  #define _LINUX_PURGATORY_H
  
  #include <linux/types.h>
  #include <crypto/sha.h>
  #include <uapi/linux/kexec.h>
  
  struct kexec_sha_region {
  	unsigned long start;
  	unsigned long len;
  };
  
  /*
   * These forward declarations serve two purposes:
   *
   * 1) Make sparse happy when checking arch/purgatory
   * 2) Document that these are required to be global so the symbol
   *    lookup in kexec works
   */
  extern struct kexec_sha_region purgatory_sha_regions[KEXEC_SEGMENT_MAX];
  extern u8 purgatory_sha256_digest[SHA256_DIGEST_SIZE];
  
  #endif