diff options
Diffstat (limited to 'sysutils/cpu-microcode-intel/files')
| -rw-r--r-- | sysutils/cpu-microcode-intel/files/LICENSE | 125 | ||||
| -rw-r--r-- | sysutils/cpu-microcode-intel/files/Makefile | 18 | ||||
| -rw-r--r-- | sysutils/cpu-microcode-intel/files/ucode-split.c | 203 |
3 files changed, 346 insertions, 0 deletions
diff --git a/sysutils/cpu-microcode-intel/files/LICENSE b/sysutils/cpu-microcode-intel/files/LICENSE new file mode 100644 index 000000000000..905826435746 --- /dev/null +++ b/sysutils/cpu-microcode-intel/files/LICENSE @@ -0,0 +1,125 @@ +The terms of the software license agreement included with any software you download will control your use of the software. + +INTEL SOFTWARE LICENSE AGREEMENT + +IMPORTANT - READ BEFORE COPYING, INSTALLING OR USING. +Do not use or load this software and any associated materials (collectively, +the "Software") until you have carefully read the following terms and +conditions. By loading or using the Software, you agree to the terms of this +Agreement. 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Contractor or Manufacturer is Intel +2200 Mission College Blvd., Santa Clara, CA 95052. diff --git a/sysutils/cpu-microcode-intel/files/Makefile b/sysutils/cpu-microcode-intel/files/Makefile new file mode 100644 index 000000000000..975279ec2a14 --- /dev/null +++ b/sysutils/cpu-microcode-intel/files/Makefile @@ -0,0 +1,18 @@ +INTEL_UCODE= Intel-Linux-Processor-Microcode-Data-Files-%%GH_TAGNAME%%/intel-ucode +OUTPUT_DIR= mcodes + +all: ucode +ucode: ucode-split + mkdir -p $(OUTPUT_DIR) + cd ${OUTPUT_DIR} && \ + for file in \ + ../${INTEL_UCODE}/[0-9,a-f][0-9,a-f]-[0-9,a-f][0-9,a-f]-[0-9,a-f][0-9,a-f]; do \ + ../ucode-split $$file; \ + done + +# Use the host cc to compile ucode-split in case of cross-compile +ucode-split: ucode-split.c + ${CC} ucode-split.c -o $@ + +clean: + rm -rf $(OUTPUT_DIR) ucode-split diff --git a/sysutils/cpu-microcode-intel/files/ucode-split.c b/sysutils/cpu-microcode-intel/files/ucode-split.c new file mode 100644 index 000000000000..be659a613902 --- /dev/null +++ b/sysutils/cpu-microcode-intel/files/ucode-split.c @@ -0,0 +1,203 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (C) 2018 The FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <err.h> +#include <fcntl.h> +#include <stdbool.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +static const size_t bufsize = 65536; + +/* SDM vol 3 9.11.1 Intel microcode header. */ +struct microcode_update_header { + uint32_t header_version; + uint32_t update_revision; + uint32_t date; /* BCD mmddyyyy */ + uint32_t processor_signature; + uint32_t checksum; /* Over update data and header */ + uint32_t loader_revision; + uint32_t processor_flags; + uint32_t data_size; + uint32_t total_size; + uint32_t reserved[3]; +}; + +/* + * SDM vol 2A CPUID EAX = 01h Returns Model, Family, Stepping Information. + * Caller must free the returned string. + */ + +static char * +format_signature(uint32_t signature) +{ + char *buf; + unsigned family, model, stepping; + + family = (signature & 0xf00) >> 8; + model = (signature & 0xf0) >> 4; + stepping = signature & 0xf; + if (family == 0x06 || family == 0x0f) + model += (signature & 0xf0000) >> 12; + if (family == 0x0f) + family += (signature & 0xff00000) >> 20; + asprintf(&buf, "%02x-%02x-%02x", family, model, stepping); + if (buf == NULL) + err(1, "asprintf"); + return (buf); +} + +static void +dump_header(const struct microcode_update_header *hdr) +{ + char *sig_str; + int i; + bool platformid_printed; + + sig_str = format_signature(hdr->processor_signature); + printf("header version\t0x%x\n", hdr->header_version); + printf("revision\t0x%x\n", hdr->update_revision); + printf("date\t\t0x%x\t%04x-%02x-%02x\n", hdr->date, + hdr->date & 0xffff, (hdr->date & 0xff000000) >> 24, + (hdr->date & 0xff0000) >> 16); + printf("signature\t0x%x\t\t%s\n", hdr->processor_signature, sig_str); + printf("checksum\t0x%x\n", hdr->checksum); + printf("loader revision\t0x%x\n", hdr->loader_revision); + printf("processor flags\t0x%x", hdr->processor_flags); + platformid_printed = false; + for (i = 0; i < 8; i++) { + if (hdr->processor_flags & 1 << i) { + printf("%s%d", platformid_printed ? ", " : "\t\t", i); + platformid_printed = true; + } + } + printf("\n"); + printf("datasize\t0x%x\t\t0x%x\n", hdr->data_size, + hdr->data_size != 0 ? hdr->data_size : 2000); + printf("size\t\t0x%x\t\t0x%x\n", hdr->total_size, + hdr->total_size != 0 ? hdr->total_size : 2048); + free(sig_str); +} + +static void +usage(void) +{ + + printf("ucode-split [-v] microcode_file\n"); + exit(1); +} + +int +main(int argc, char *argv[]) +{ + struct microcode_update_header hdr; + char *buf, *output_file, *sig_str; + size_t len, resid; + ssize_t rv; + int c, ifd, ofd; + bool vflag; + + vflag = false; + while ((c = getopt(argc, argv, "v")) != -1) { + switch (c) { + case 'v': + vflag = true; + break; + default: + usage(); + } + } + argc -= optind; + argv += optind; + + if (argc != 1) + usage(); + + ifd = open(argv[0], O_RDONLY); + if (ifd < 0) + err(1, "open"); + + buf = malloc(bufsize); + if (buf == NULL) + err(1, "malloc"); + + for (;;) { + /* Read header. */ + rv = read(ifd, &hdr, sizeof(hdr)); + if (rv < 0) { + err(1, "read"); + } else if (rv == 0) { + break; + } else if (rv < (ssize_t)sizeof(hdr)) { + errx(1, "invalid microcode header"); + } + if (hdr.header_version != 1) + errx(1, "invalid header version"); + + if (vflag) + dump_header(&hdr); + + sig_str = format_signature(hdr.processor_signature); + asprintf(&output_file, "%s.%02x", sig_str, + hdr.processor_flags & 0xff); + free(sig_str); + if (output_file == NULL) + err(1, "asprintf"); + ofd = open(output_file, O_WRONLY | O_CREAT | O_TRUNC, 0600); + if (ofd < 0) + err(1, "open"); + + /* Write header. */ + rv = write(ofd, &hdr, sizeof(hdr)); + if (rv < (ssize_t)sizeof(hdr)) + err(1, "write"); + + /* Copy data. */ + resid = (hdr.total_size != 0 ? hdr.total_size : 2048) - + sizeof(hdr); + if (resid > 1 << 24) /* Arbitrary chosen maximum size. */ + errx(1, "header total_size too large"); + while (resid > 0) { + len = resid < bufsize ? resid : bufsize; + rv = read(ifd, buf, len); + if (rv < 0) + err(1, "read"); + else if (rv < (ssize_t)len) + errx(1, "truncated microcode data"); + if (write(ofd, buf, len) < (ssize_t)len) + err(1, "write"); + resid -= len; + } + if (vflag) + printf("written to %s\n\n", output_file); + close(ofd); + free(output_file); + } +} |