2 * Copyright (c) 2006, 2008 Stanislav Sedov <stas@FreeBSD.org>.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
37 #include <sys/types.h>
40 #include <sys/ioctl.h>
41 #include <sys/ioccom.h>
42 #include <sys/cpuctl.h>
44 #include <machine/cpufunc.h>
45 #include <machine/specialreg.h>
47 #include "cpucontrol.h"
55 cpuctl_cpuid_args_t idargs = {
59 error = ioctl(fd, CPUCTL_CPUID, &idargs);
64 ((uint32_t *)vendor)[0] = idargs.data[1];
65 ((uint32_t *)vendor)[1] = idargs.data[3];
66 ((uint32_t *)vendor)[2] = idargs.data[2];
68 if (strncmp(vendor, AMD_VENDOR_ID, sizeof(AMD_VENDOR_ID)) != 0)
74 amd_update(const char *dev, const char *path)
80 amd_fw_header_t *fw_header;
85 cpuctl_cpuid_args_t idargs = {
86 .level = 1, /* Request signature. */
88 cpuctl_update_args_t args;
95 fw_image = MAP_FAILED;
96 devfd = open(dev, O_RDWR);
98 WARN(0, "could not open %s for writing", dev);
101 error = ioctl(devfd, CPUCTL_CPUID, &idargs);
106 signature = idargs.data[0];
107 WARNX(2, "found cpu family %#x model %#x "
108 "stepping %#x extfamily %#x extmodel %#x.",
109 (signature >> 8) & 0x0f, (signature >> 4) & 0x0f,
110 (signature >> 0) & 0x0f, (signature >> 20) & 0xff,
111 (signature >> 16) & 0x0f);
114 * Open the firmware file.
116 fd = open(path, O_RDONLY, 0);
118 WARN(0, "open(%s)", path);
121 error = fstat(fd, &st);
123 WARN(0, "fstat(%s)", path);
126 if (st.st_size < 0 || (unsigned)st.st_size < sizeof(*fw_header)) {
127 WARNX(2, "file too short: %s", path);
131 * mmap the whole image.
133 fw_image = (uint32_t *)mmap(NULL, st.st_size, PROT_READ,
135 if (fw_image == MAP_FAILED) {
136 WARN(0, "mmap(%s)", path);
139 fw_header = (amd_fw_header_t *)fw_image;
140 if ((fw_header->magic >> 8) != AMD_MAGIC) {
141 WARNX(2, "%s is not a valid amd firmware: version mismatch",
145 fw_data = (uint32_t *)(fw_header + 1);
146 fw_size = (st.st_size - sizeof(*fw_header)) / sizeof(uint32_t);
149 * Check the primary checksum.
152 for (i = 0; i < fw_size; i++)
154 if (sum != fw_header->checksum) {
155 WARNX(2, "%s: update data checksum invalid", path);
158 if (signature == fw_header->signature) {
159 fprintf(stderr, "%s: updating cpu %s... ", path, dev);
161 args.data = fw_image;
162 args.size = st.st_size;
163 error = ioctl(devfd, CPUCTL_UPDATE, &args);
165 fprintf(stderr, "failed.\n");
169 fprintf(stderr, "done.\n");
177 if (fw_image != MAP_FAILED)
178 if(munmap(fw_image, st.st_size) != 0)
179 warn("munmap(%s)", path);