1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2018 The FreeBSD Foundation 5 * 6 * This software was developed by Mark Johnston under sponsorship from 7 * the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #ifndef _MACHINE_UCODE_H_ 32 #define _MACHINE_UCODE_H_ 33 34 struct ucode_intel_header { 35 uint32_t header_version; 36 int32_t update_revision; 37 uint32_t dat; 38 uint32_t processor_signature; 39 uint32_t checksum; 40 uint32_t loader_revision; 41 uint32_t processor_flags; 42 #define UCODE_INTEL_DEFAULT_DATA_SIZE 2000 43 uint32_t data_size; 44 uint32_t total_size; 45 uint32_t reserved[3]; 46 }; 47 48 struct ucode_intel_extsig_table { 49 uint32_t signature_count; 50 uint32_t signature_table_checksum; 51 uint32_t reserved[3]; 52 struct ucode_intel_extsig { 53 uint32_t processor_signature; 54 uint32_t processor_flags; 55 uint32_t checksum; 56 } entries[0]; 57 }; 58 59 int ucode_intel_load(void *data, bool unsafe, 60 uint64_t *nrevp, uint64_t *orevp); 61 size_t ucode_load_bsp(uintptr_t free); 62 void ucode_load_ap(int cpu); 63 void ucode_reload(void); 64 void * ucode_update(void *data); 65 66 #endif /* _MACHINE_UCODE_H_ */ 67