diff options
Diffstat (limited to 'usr.sbin/cpucontrol/amd10h.c')
| -rw-r--r-- | usr.sbin/cpucontrol/amd10h.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/usr.sbin/cpucontrol/amd10h.c b/usr.sbin/cpucontrol/amd10h.c new file mode 100644 index 000000000000..9fc861fe5914 --- /dev/null +++ b/usr.sbin/cpucontrol/amd10h.c @@ -0,0 +1,158 @@ +/*- + * Copyright (c) 2012 Andriy Gapon <avg@FreeBSD.org>. + * All rights reserved. + * + * 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 ``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 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 <sys/types.h> +#include <sys/stat.h> +#include <sys/mman.h> +#include <sys/ioctl.h> +#include <sys/ioccom.h> +#include <sys/cpuctl.h> + +#include <machine/cpufunc.h> +#include <machine/specialreg.h> + +#include <x86/ucode.h> + +#include <assert.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <fcntl.h> +#include <err.h> + +#include "cpucontrol.h" +#include "amd.h" + +int +amd10h_probe(int fd) +{ + char vendor[13]; + cpuctl_cpuid_args_t idargs; + uint32_t family; + uint32_t signature; + int error; + + idargs.level = 0; + error = ioctl(fd, CPUCTL_CPUID, &idargs); + if (error < 0) { + WARN(0, "ioctl()"); + return (1); + } + ((uint32_t *)vendor)[0] = idargs.data[1]; + ((uint32_t *)vendor)[1] = idargs.data[3]; + ((uint32_t *)vendor)[2] = idargs.data[2]; + vendor[12] = '\0'; + if (strncmp(vendor, AMD_VENDOR_ID, sizeof(AMD_VENDOR_ID)) != 0) + return (1); + + idargs.level = 1; + error = ioctl(fd, CPUCTL_CPUID, &idargs); + if (error < 0) { + WARN(0, "ioctl()"); + return (1); + } + signature = idargs.data[0]; + family = ((signature >> 8) & 0x0f) + ((signature >> 20) & 0xff); + if (family < 0x10) + return (1); + return (0); +} + +void +amd10h_update(const struct ucode_update_params *params) +{ + cpuctl_cpuid_args_t idargs; + cpuctl_msr_args_t msrargs; + cpuctl_update_args_t args; + const uint8_t *fw_image; + const char *dev, *path; + const void *selected_fw; + size_t fw_size; + size_t selected_size; + uint32_t revision; + uint32_t new_rev, old_rev; + uint32_t signature; + int devfd; + int error; + + dev = params->dev_path; + path = params->fw_path; + devfd = params->devfd; + fw_image = params->fwimage; + fw_size = params->fwsize; + + assert(path); + assert(dev); + + idargs.level = 1; + error = ioctl(devfd, CPUCTL_CPUID, &idargs); + if (error < 0) { + WARN(0, "ioctl()"); + goto done; + } + signature = idargs.data[0]; + + msrargs.msr = MSR_BIOS_SIGN; + error = ioctl(devfd, CPUCTL_RDMSR, &msrargs); + if (error < 0) { + WARN(0, "ioctl(%s)", dev); + goto done; + } + old_rev = revision = (uint32_t)msrargs.data; + + selected_fw = ucode_amd_find(path, signature, &revision, fw_image, + fw_size, &selected_size); + + if (selected_fw != NULL) { + WARNX(1, "selected ucode size is %zu", selected_size); + fprintf(stderr, + "%s: updating cpu %s from rev %#x to rev %#x... ", + path, dev, old_rev, revision); + + args.data = __DECONST(void *, selected_fw); + args.size = selected_size; + error = ioctl(devfd, CPUCTL_UPDATE, &args); + if (error < 0) { + fprintf(stderr, "failed.\n"); + warn("ioctl()"); + goto done; + } + fprintf(stderr, "done.\n"); + } + + msrargs.msr = MSR_BIOS_SIGN; + error = ioctl(devfd, CPUCTL_RDMSR, &msrargs); + if (error < 0) { + WARN(0, "ioctl(%s)", dev); + goto done; + } + new_rev = (uint32_t)msrargs.data; + if (new_rev != revision) + WARNX(0, "revision after update %#x", new_rev); + +done: + return; +} |