osfmk/i386/ucode.h

   1 /*
   2  * Copyright (c) 2017 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  *  ucode.h
  30  *
  31  *  Interface definitions for the microcode updater interface sysctl
  32  */
  33
  34 /* Intel defined microcode format */
  35 struct intel_ucupdate {
  36         /* Header information */
  37         uint32_t header_version;
  38         uint32_t update_revision;
  39         uint32_t date;
  40         uint32_t processor_signature;
  41         uint32_t checksum;
  42         uint32_t loader_revision;
  43         uint32_t processor_flags;
  44         uint32_t data_size;
  45         uint32_t total_size;
  46
  47         /* Reserved for future expansion */
  48         uint32_t reserved0;
  49         uint32_t reserved1;
  50         uint32_t reserved2;
  51
  52         /* First word of the update data */
  53         uint32_t data;
  54 };
  55
  56 extern int ucode_interface(uint64_t addr);
  57 extern void ucode_update_wake(void);