mirror of
https://github.com/freebsd/freebsd-src
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34467bd762
Sponsored by: Netflix Reviewed by: markj Differential Revision: https://reviews.freebsd.org/D43318
158 lines
4 KiB
C
158 lines
4 KiB
C
/*-
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* Copyright (c) 2012 Andriy Gapon <avg@FreeBSD.org>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <sys/ioctl.h>
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#include <sys/ioccom.h>
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#include <sys/cpuctl.h>
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#include <machine/cpufunc.h>
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#include <machine/specialreg.h>
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#include <x86/ucode.h>
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <err.h>
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#include "cpucontrol.h"
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#include "amd.h"
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int
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amd10h_probe(int fd)
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{
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char vendor[13];
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cpuctl_cpuid_args_t idargs;
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uint32_t family;
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uint32_t signature;
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int error;
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idargs.level = 0;
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error = ioctl(fd, CPUCTL_CPUID, &idargs);
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if (error < 0) {
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WARN(0, "ioctl()");
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return (1);
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}
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((uint32_t *)vendor)[0] = idargs.data[1];
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((uint32_t *)vendor)[1] = idargs.data[3];
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((uint32_t *)vendor)[2] = idargs.data[2];
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vendor[12] = '\0';
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if (strncmp(vendor, AMD_VENDOR_ID, sizeof(AMD_VENDOR_ID)) != 0)
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return (1);
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idargs.level = 1;
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error = ioctl(fd, CPUCTL_CPUID, &idargs);
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if (error < 0) {
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WARN(0, "ioctl()");
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return (1);
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}
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signature = idargs.data[0];
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family = ((signature >> 8) & 0x0f) + ((signature >> 20) & 0xff);
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if (family < 0x10)
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return (1);
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return (0);
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}
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void
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amd10h_update(const struct ucode_update_params *params)
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{
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cpuctl_cpuid_args_t idargs;
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cpuctl_msr_args_t msrargs;
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cpuctl_update_args_t args;
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const uint8_t *fw_image;
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const char *dev, *path;
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const void *selected_fw;
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size_t fw_size;
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size_t selected_size;
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uint32_t revision;
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uint32_t new_rev;
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uint32_t signature;
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int devfd;
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int error;
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dev = params->dev_path;
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path = params->fw_path;
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devfd = params->devfd;
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fw_image = params->fwimage;
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fw_size = params->fwsize;
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assert(path);
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assert(dev);
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idargs.level = 1;
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error = ioctl(devfd, CPUCTL_CPUID, &idargs);
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if (error < 0) {
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WARN(0, "ioctl()");
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goto done;
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}
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signature = idargs.data[0];
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msrargs.msr = MSR_BIOS_SIGN;
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error = ioctl(devfd, CPUCTL_RDMSR, &msrargs);
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if (error < 0) {
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WARN(0, "ioctl(%s)", dev);
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goto done;
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}
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revision = (uint32_t)msrargs.data;
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selected_fw = ucode_amd_find(path, signature, revision, fw_image,
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fw_size, &selected_size);
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if (selected_fw != NULL) {
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WARNX(1, "selected ucode size is %zu", selected_size);
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fprintf(stderr, "%s: updating cpu %s to revision %#x... ",
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path, dev, revision);
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args.data = __DECONST(void *, selected_fw);
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args.size = selected_size;
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error = ioctl(devfd, CPUCTL_UPDATE, &args);
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if (error < 0) {
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fprintf(stderr, "failed.\n");
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warn("ioctl()");
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goto done;
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}
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fprintf(stderr, "done.\n");
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}
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msrargs.msr = MSR_BIOS_SIGN;
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error = ioctl(devfd, CPUCTL_RDMSR, &msrargs);
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if (error < 0) {
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WARN(0, "ioctl(%s)", dev);
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goto done;
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}
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new_rev = (uint32_t)msrargs.data;
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if (new_rev != revision)
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WARNX(0, "revision after update %#x", new_rev);
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done:
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return;
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}
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