Index: head/sys/dev/cpuctl/cpuctl.c =================================================================== --- head/sys/dev/cpuctl/cpuctl.c (revision 228435) +++ head/sys/dev/cpuctl/cpuctl.c (revision 228436) @@ -1,464 +1,543 @@ /*- * Copyright (c) 2006-2008 Stanislav Sedov * 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 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 __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static d_open_t cpuctl_open; static d_ioctl_t cpuctl_ioctl; #define CPUCTL_VERSION 1 #ifdef DEBUG # define DPRINTF(format,...) printf(format, __VA_ARGS__); #else # define DPRINTF(...) #endif #define UCODE_SIZE_MAX (10 * 1024) static int cpuctl_do_msr(int cpu, cpuctl_msr_args_t *data, u_long cmd, struct thread *td); static int cpuctl_do_cpuid(int cpu, cpuctl_cpuid_args_t *data, struct thread *td); static int cpuctl_do_update(int cpu, cpuctl_update_args_t *data, struct thread *td); static int update_intel(int cpu, cpuctl_update_args_t *args, struct thread *td); static int update_amd(int cpu, cpuctl_update_args_t *args, struct thread *td); +static int update_via(int cpu, cpuctl_update_args_t *args, + struct thread *td); static struct cdev **cpuctl_devs; static MALLOC_DEFINE(M_CPUCTL, "cpuctl", "CPUCTL buffer"); static struct cdevsw cpuctl_cdevsw = { .d_version = D_VERSION, .d_open = cpuctl_open, .d_ioctl = cpuctl_ioctl, .d_name = "cpuctl", }; /* * This function checks if specified cpu enabled or not. */ static int cpu_enabled(int cpu) { return (pmc_cpu_is_disabled(cpu) == 0); } /* * Check if the current thread is bound to a specific cpu. */ static int cpu_sched_is_bound(struct thread *td) { int ret; thread_lock(td); ret = sched_is_bound(td); thread_unlock(td); return (ret); } /* * Switch to target cpu to run. */ static void set_cpu(int cpu, struct thread *td) { KASSERT(cpu >= 0 && cpu < mp_ncpus && cpu_enabled(cpu), ("[cpuctl,%d]: bad cpu number %d", __LINE__, cpu)); thread_lock(td); sched_bind(td, cpu); thread_unlock(td); KASSERT(td->td_oncpu == cpu, ("[cpuctl,%d]: cannot bind to target cpu %d", __LINE__, cpu)); } static void restore_cpu(int oldcpu, int is_bound, struct thread *td) { KASSERT(oldcpu >= 0 && oldcpu < mp_ncpus && cpu_enabled(oldcpu), ("[cpuctl,%d]: bad cpu number %d", __LINE__, oldcpu)); thread_lock(td); if (is_bound == 0) sched_unbind(td); else sched_bind(td, oldcpu); thread_unlock(td); } int cpuctl_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flags, struct thread *td) { int ret; int cpu = dev2unit(dev); if (cpu >= mp_ncpus || !cpu_enabled(cpu)) { DPRINTF("[cpuctl,%d]: bad cpu number %d\n", __LINE__, cpu); return (ENXIO); } /* Require write flag for "write" requests. */ if ((cmd == CPUCTL_WRMSR || cmd == CPUCTL_UPDATE) && ((flags & FWRITE) == 0)) return (EPERM); switch (cmd) { case CPUCTL_RDMSR: ret = cpuctl_do_msr(cpu, (cpuctl_msr_args_t *)data, cmd, td); break; case CPUCTL_MSRSBIT: case CPUCTL_MSRCBIT: case CPUCTL_WRMSR: ret = priv_check(td, PRIV_CPUCTL_WRMSR); if (ret != 0) goto fail; ret = cpuctl_do_msr(cpu, (cpuctl_msr_args_t *)data, cmd, td); break; case CPUCTL_CPUID: ret = cpuctl_do_cpuid(cpu, (cpuctl_cpuid_args_t *)data, td); break; case CPUCTL_UPDATE: ret = priv_check(td, PRIV_CPUCTL_UPDATE); if (ret != 0) goto fail; ret = cpuctl_do_update(cpu, (cpuctl_update_args_t *)data, td); break; default: ret = EINVAL; break; } fail: return (ret); } /* * Actually perform cpuid operation. */ static int cpuctl_do_cpuid(int cpu, cpuctl_cpuid_args_t *data, struct thread *td) { int is_bound = 0; int oldcpu; KASSERT(cpu >= 0 && cpu < mp_ncpus, ("[cpuctl,%d]: bad cpu number %d", __LINE__, cpu)); /* Explicitly clear cpuid data to avoid returning stale info. */ bzero(data->data, sizeof(data->data)); DPRINTF("[cpuctl,%d]: retriving cpuid level %#0x for %d cpu\n", __LINE__, data->level, cpu); oldcpu = td->td_oncpu; is_bound = cpu_sched_is_bound(td); set_cpu(cpu, td); do_cpuid(data->level, data->data); restore_cpu(oldcpu, is_bound, td); return (0); } /* * Actually perform MSR operations. */ static int cpuctl_do_msr(int cpu, cpuctl_msr_args_t *data, u_long cmd, struct thread *td) { uint64_t reg; int is_bound = 0; int oldcpu; int ret; KASSERT(cpu >= 0 && cpu < mp_ncpus, ("[cpuctl,%d]: bad cpu number %d", __LINE__, cpu)); /* * Explicitly clear cpuid data to avoid returning stale * info */ DPRINTF("[cpuctl,%d]: operating on MSR %#0x for %d cpu\n", __LINE__, data->msr, cpu); oldcpu = td->td_oncpu; is_bound = cpu_sched_is_bound(td); set_cpu(cpu, td); if (cmd == CPUCTL_RDMSR) { data->data = 0; ret = rdmsr_safe(data->msr, &data->data); } else if (cmd == CPUCTL_WRMSR) { ret = wrmsr_safe(data->msr, data->data); } else if (cmd == CPUCTL_MSRSBIT) { critical_enter(); ret = rdmsr_safe(data->msr, ®); if (ret == 0) ret = wrmsr_safe(data->msr, reg | data->data); critical_exit(); } else if (cmd == CPUCTL_MSRCBIT) { critical_enter(); ret = rdmsr_safe(data->msr, ®); if (ret == 0) ret = wrmsr_safe(data->msr, reg & ~data->data); critical_exit(); } else panic("[cpuctl,%d]: unknown operation requested: %lu", __LINE__, cmd); restore_cpu(oldcpu, is_bound, td); return (ret); } /* * Actually perform microcode update. */ static int cpuctl_do_update(int cpu, cpuctl_update_args_t *data, struct thread *td) { cpuctl_cpuid_args_t args = { .level = 0, }; char vendor[13]; int ret; KASSERT(cpu >= 0 && cpu < mp_ncpus, ("[cpuctl,%d]: bad cpu number %d", __LINE__, cpu)); DPRINTF("[cpuctl,%d]: XXX %d", __LINE__, cpu); ret = cpuctl_do_cpuid(cpu, &args, td); if (ret != 0) { DPRINTF("[cpuctl,%d]: cannot retrive cpuid info for cpu %d", __LINE__, cpu); return (ENXIO); } ((uint32_t *)vendor)[0] = args.data[1]; ((uint32_t *)vendor)[1] = args.data[3]; ((uint32_t *)vendor)[2] = args.data[2]; vendor[12] = '\0'; if (strncmp(vendor, INTEL_VENDOR_ID, sizeof(INTEL_VENDOR_ID)) == 0) ret = update_intel(cpu, data, td); - else if(strncmp(vendor, INTEL_VENDOR_ID, sizeof(AMD_VENDOR_ID)) == 0) + else if(strncmp(vendor, AMD_VENDOR_ID, sizeof(AMD_VENDOR_ID)) == 0) ret = update_amd(cpu, data, td); + else if(strncmp(vendor, CENTAUR_VENDOR_ID, sizeof(CENTAUR_VENDOR_ID)) == 0) + ret = update_via(cpu, data, td); else ret = ENXIO; return (ret); } static int update_intel(int cpu, cpuctl_update_args_t *args, struct thread *td) { void *ptr = NULL; uint64_t rev0, rev1; uint32_t tmp[4]; int is_bound = 0; int oldcpu; int ret; if (args->size == 0 || args->data == NULL) { DPRINTF("[cpuctl,%d]: zero-sized firmware image", __LINE__); return (EINVAL); } if (args->size > UCODE_SIZE_MAX) { DPRINTF("[cpuctl,%d]: firmware image too large", __LINE__); return (EINVAL); } /* * 16 byte alignment required. */ ptr = malloc(args->size + 16, M_CPUCTL, M_WAITOK); ptr = (void *)(16 + ((intptr_t)ptr & ~0xf)); if (copyin(args->data, ptr, args->size) != 0) { DPRINTF("[cpuctl,%d]: copyin %p->%p of %zd bytes failed", __LINE__, args->data, ptr, args->size); ret = EFAULT; goto fail; } oldcpu = td->td_oncpu; is_bound = cpu_sched_is_bound(td); set_cpu(cpu, td); critical_enter(); rdmsr_safe(MSR_BIOS_SIGN, &rev0); /* Get current micorcode revision. */ /* * Perform update. */ wrmsr_safe(MSR_BIOS_UPDT_TRIG, (uintptr_t)(ptr)); wrmsr_safe(MSR_BIOS_SIGN, 0); /* * Serialize instruction flow. */ do_cpuid(0, tmp); critical_exit(); rdmsr_safe(MSR_BIOS_SIGN, &rev1); /* Get new micorcode revision. */ restore_cpu(oldcpu, is_bound, td); if (rev1 > rev0) ret = 0; else ret = EEXIST; fail: if (ptr != NULL) contigfree(ptr, args->size, M_CPUCTL); return (ret); } static int update_amd(int cpu, cpuctl_update_args_t *args, struct thread *td) { void *ptr = NULL; uint32_t tmp[4]; int is_bound = 0; int oldcpu; int ret; if (args->size == 0 || args->data == NULL) { DPRINTF("[cpuctl,%d]: zero-sized firmware image", __LINE__); return (EINVAL); } if (args->size > UCODE_SIZE_MAX) { DPRINTF("[cpuctl,%d]: firmware image too large", __LINE__); return (EINVAL); } /* * XXX Might not require contignous address space - needs check */ ptr = contigmalloc(args->size, M_CPUCTL, 0, 0, 0xffffffff, 16, 0); if (ptr == NULL) { DPRINTF("[cpuctl,%d]: cannot allocate %zd bytes of memory", __LINE__, args->size); return (ENOMEM); } if (copyin(args->data, ptr, args->size) != 0) { DPRINTF("[cpuctl,%d]: copyin %p->%p of %zd bytes failed", __LINE__, args->data, ptr, args->size); ret = EFAULT; goto fail; } oldcpu = td->td_oncpu; is_bound = cpu_sched_is_bound(td); set_cpu(cpu, td); critical_enter(); /* * Perform update. */ wrmsr_safe(MSR_K8_UCODE_UPDATE, (uintptr_t)ptr); /* * Serialize instruction flow. */ do_cpuid(0, tmp); critical_exit(); restore_cpu(oldcpu, is_bound, td); ret = 0; +fail: + if (ptr != NULL) + contigfree(ptr, args->size, M_CPUCTL); + return (ret); +} + +static int +update_via(int cpu, cpuctl_update_args_t *args, struct thread *td) +{ + void *ptr = NULL; + uint64_t rev0, rev1, res; + uint32_t tmp[4]; + int is_bound = 0; + int oldcpu; + int ret; + + if (args->size == 0 || args->data == NULL) { + DPRINTF("[cpuctl,%d]: zero-sized firmware image", __LINE__); + return (EINVAL); + } + if (args->size > UCODE_SIZE_MAX) { + DPRINTF("[cpuctl,%d]: firmware image too large", __LINE__); + return (EINVAL); + } + + /* + * 4 byte alignment required. + */ + ptr = malloc(args->size + 16, M_CPUCTL, M_WAITOK); + ptr = (void *)(16 + ((intptr_t)ptr & ~0xf)); + if (copyin(args->data, ptr, args->size) != 0) { + DPRINTF("[cpuctl,%d]: copyin %p->%p of %zd bytes failed", + __LINE__, args->data, ptr, args->size); + ret = EFAULT; + goto fail; + } + oldcpu = td->td_oncpu; + is_bound = cpu_sched_is_bound(td); + set_cpu(cpu, td); + critical_enter(); + rdmsr_safe(MSR_BIOS_SIGN, &rev0); /* Get current micorcode revision. */ + + /* + * Perform update. + */ + wrmsr_safe(MSR_BIOS_UPDT_TRIG, (uintptr_t)(ptr)); + do_cpuid(1, tmp); + + /* + * Result are in low byte of MSR FCR5: + * 0x00: No update has been attempted since RESET. + * 0x01: The last attempted update was successful. + * 0x02: The last attempted update was unsuccessful due to a bad + * environment. No update was loaded and any preexisting + * patches are still active. + * 0x03: The last attempted update was not applicable to this processor. + * No update was loaded and any preexisting patches are still + * active. + * 0x04: The last attempted update was not successful due to an invalid + * update data block. No update was loaded and any preexisting + * patches are still active + */ + rdmsr_safe(0x1205, &res); + res &= 0xff; + critical_exit(); + rdmsr_safe(MSR_BIOS_SIGN, &rev1); /* Get new microcode revision. */ + restore_cpu(oldcpu, is_bound, td); + + DPRINTF("[cpu,%d]: rev0=%x rev1=%x res=%x\n", __LINE__, + (unsigned)(rev0 >> 32), (unsigned)(rev1 >> 32), (unsigned)res); + + if (res != 0x01) + ret = EINVAL; + else + ret = 0; fail: if (ptr != NULL) contigfree(ptr, args->size, M_CPUCTL); return (ret); } int cpuctl_open(struct cdev *dev, int flags, int fmt __unused, struct thread *td) { int ret = 0; int cpu; cpu = dev2unit(dev); if (cpu >= mp_ncpus || !cpu_enabled(cpu)) { DPRINTF("[cpuctl,%d]: incorrect cpu number %d\n", __LINE__, cpu); return (ENXIO); } if (flags & FWRITE) ret = securelevel_gt(td->td_ucred, 0); return (ret); } static int cpuctl_modevent(module_t mod __unused, int type, void *data __unused) { int cpu; switch(type) { case MOD_LOAD: if ((cpu_feature & CPUID_MSR) == 0) { if (bootverbose) printf("cpuctl: not available.\n"); return (ENODEV); } if (bootverbose) printf("cpuctl: access to MSR registers/cpuid info.\n"); cpuctl_devs = (struct cdev **)malloc(sizeof(void *) * mp_ncpus, M_CPUCTL, M_WAITOK | M_ZERO); if (cpuctl_devs == NULL) { DPRINTF("[cpuctl,%d]: cannot allocate memory\n", __LINE__); return (ENOMEM); } for (cpu = 0; cpu < mp_ncpus; cpu++) if (cpu_enabled(cpu)) cpuctl_devs[cpu] = make_dev(&cpuctl_cdevsw, cpu, UID_ROOT, GID_KMEM, 0640, "cpuctl%d", cpu); break; case MOD_UNLOAD: for (cpu = 0; cpu < mp_ncpus; cpu++) { if (cpuctl_devs[cpu] != NULL) destroy_dev(cpuctl_devs[cpu]); } free(cpuctl_devs, M_CPUCTL); break; case MOD_SHUTDOWN: break; default: return (EOPNOTSUPP); } return (0); } DEV_MODULE(cpuctl, cpuctl_modevent, NULL); MODULE_VERSION(cpuctl, CPUCTL_VERSION); Index: head/usr.sbin/cpucontrol/Makefile =================================================================== --- head/usr.sbin/cpucontrol/Makefile (revision 228435) +++ head/usr.sbin/cpucontrol/Makefile (revision 228436) @@ -1,7 +1,7 @@ # $FreeBSD$ PROG= cpucontrol MAN= cpucontrol.8 -SRCS= cpucontrol.c intel.c amd.c +SRCS= cpucontrol.c intel.c amd.c via.c .include Index: head/usr.sbin/cpucontrol/cpucontrol.c =================================================================== --- head/usr.sbin/cpucontrol/cpucontrol.c (revision 228435) +++ head/usr.sbin/cpucontrol/cpucontrol.c (revision 228436) @@ -1,428 +1,430 @@ /*- * Copyright (c) 2008-2011 Stanislav Sedov . * 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. */ /* * This utility provides userland access to the cpuctl(4) pseudo-device * features. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "cpucontrol.h" #include "amd.h" #include "intel.h" +#include "via.h" int verbosity_level = 0; #define DEFAULT_DATADIR "/usr/local/share/cpucontrol" #define FLAG_I 0x01 #define FLAG_M 0x02 #define FLAG_U 0x04 #define OP_INVAL 0x00 #define OP_READ 0x01 #define OP_WRITE 0x02 #define OP_OR 0x04 #define OP_AND 0x08 #define HIGH(val) (uint32_t)(((val) >> 32) & 0xffffffff) #define LOW(val) (uint32_t)((val) & 0xffffffff) /* * Macros for freeing SLISTs, probably must be in /sys/queue.h */ #define SLIST_FREE(head, field, freef) do { \ typeof(SLIST_FIRST(head)) __elm0; \ typeof(SLIST_FIRST(head)) __elm; \ SLIST_FOREACH_SAFE(__elm, (head), field, __elm0) \ (void)(freef)(__elm); \ } while(0); struct datadir { const char *path; SLIST_ENTRY(datadir) next; }; static SLIST_HEAD(, datadir) datadirs = SLIST_HEAD_INITIALIZER(datadirs); struct ucode_handler { ucode_probe_t *probe; ucode_update_t *update; } handlers[] = { { intel_probe, intel_update }, { amd_probe, amd_update }, + { via_probe, via_update }, }; #define NHANDLERS (sizeof(handlers) / sizeof(*handlers)) static void usage(void); static int isdir(const char *path); static int do_cpuid(const char *cmdarg, const char *dev); static int do_msr(const char *cmdarg, const char *dev); static int do_update(const char *dev); static void datadir_add(const char *path); static void __dead2 usage(void) { const char *name; name = getprogname(); if (name == NULL) name = "cpuctl"; fprintf(stderr, "Usage: %s [-vh] [-d datadir] [-m msr[=value] | " "-i level | -u] device\n", name); exit(EX_USAGE); } static int isdir(const char *path) { int error; struct stat st; error = stat(path, &st); if (error < 0) { WARN(0, "stat(%s)", path); return (error); } return (st.st_mode & S_IFDIR); } static int do_cpuid(const char *cmdarg, const char *dev) { unsigned int level; cpuctl_cpuid_args_t args; int fd, error; char *endptr; assert(cmdarg != NULL); assert(dev != NULL); level = strtoul(cmdarg, &endptr, 16); if (*cmdarg == '\0' || *endptr != '\0') { WARNX(0, "incorrect operand: %s", cmdarg); usage(); /* NOTREACHED */ } /* * Fill ioctl argument structure. */ args.level = level; fd = open(dev, O_RDONLY); if (fd < 0) { WARN(0, "error opening %s for reading", dev); return (1); } error = ioctl(fd, CPUCTL_CPUID, &args); if (error < 0) { WARN(0, "ioctl(%s, CPUCTL_CPUID)", dev); close(fd); return (error); } fprintf(stdout, "cpuid level 0x%x: 0x%.8x 0x%.8x 0x%.8x 0x%.8x\n", level, args.data[0], args.data[1], args.data[2], args.data[3]); close(fd); return (0); } static int do_msr(const char *cmdarg, const char *dev) { unsigned int msr; cpuctl_msr_args_t args; size_t len; uint64_t data = 0; unsigned long command; int do_invert = 0, op; int fd, error; const char *command_name; char *endptr; char *p; assert(cmdarg != NULL); assert(dev != NULL); len = strlen(cmdarg); if (len == 0) { WARNX(0, "MSR register expected"); usage(); /* NOTREACHED */ } /* * Parse command string. */ msr = strtoul(cmdarg, &endptr, 16); switch (*endptr) { case '\0': op = OP_READ; break; case '=': op = OP_WRITE; break; case '&': op = OP_AND; endptr++; break; case '|': op = OP_OR; endptr++; break; default: op = OP_INVAL; } if (op != OP_READ) { /* Complex operation. */ if (*endptr != '=') op = OP_INVAL; else { p = ++endptr; if (*p == '~') { do_invert = 1; p++; } data = strtoull(p, &endptr, 16); if (*p == '\0' || *endptr != '\0') { WARNX(0, "argument required: %s", cmdarg); usage(); /* NOTREACHED */ } } } if (op == OP_INVAL) { WARNX(0, "invalid operator: %s", cmdarg); usage(); /* NOTREACHED */ } /* * Fill ioctl argument structure. */ args.msr = msr; if ((do_invert != 0) ^ (op == OP_AND)) args.data = ~data; else args.data = data; switch (op) { case OP_READ: command = CPUCTL_RDMSR; command_name = "RDMSR"; break; case OP_WRITE: command = CPUCTL_WRMSR; command_name = "WRMSR"; break; case OP_OR: command = CPUCTL_MSRSBIT; command_name = "MSRSBIT"; break; case OP_AND: command = CPUCTL_MSRCBIT; command_name = "MSRCBIT"; break; default: abort(); } fd = open(dev, op == OP_READ ? O_RDONLY : O_WRONLY); if (fd < 0) { WARN(0, "error opening %s for %s", dev, op == OP_READ ? "reading" : "writing"); return (1); } error = ioctl(fd, command, &args); if (error < 0) { WARN(0, "ioctl(%s, CPUCTL_%s (%lu))", dev, command_name, command); close(fd); return (1); } if (op == OP_READ) fprintf(stdout, "MSR 0x%x: 0x%.8x 0x%.8x\n", msr, HIGH(args.data), LOW(args.data)); close(fd); return (0); } static int do_update(const char *dev) { int fd; unsigned int i; int error; struct ucode_handler *handler; struct datadir *dir; DIR *dirfd; struct dirent *direntry; char buf[MAXPATHLEN]; fd = open(dev, O_RDONLY); if (fd < 0) { WARN(0, "error opening %s for reading", dev); return (1); } /* * Find the appropriate handler for device. */ for (i = 0; i < NHANDLERS; i++) if (handlers[i].probe(fd) == 0) break; if (i < NHANDLERS) handler = &handlers[i]; else { WARNX(0, "cannot find the appropriate handler for device"); close(fd); return (1); } close(fd); /* * Process every image in specified data directories. */ SLIST_FOREACH(dir, &datadirs, next) { dirfd = opendir(dir->path); if (dirfd == NULL) { WARNX(1, "skipping directory %s: not accessible", dir->path); continue; } while ((direntry = readdir(dirfd)) != NULL) { if (direntry->d_namlen == 0) continue; error = snprintf(buf, sizeof(buf), "%s/%s", dir->path, direntry->d_name); if ((unsigned)error >= sizeof(buf)) WARNX(0, "skipping %s, buffer too short", direntry->d_name); if (isdir(buf) != 0) { WARNX(2, "skipping %s: is a directory", buf); continue; } handler->update(dev, buf); } error = closedir(dirfd); if (error != 0) WARN(0, "closedir(%s)", dir->path); } return (0); } /* * Add new data directory to the search list. */ static void datadir_add(const char *path) { struct datadir *newdir; newdir = (struct datadir *)malloc(sizeof(*newdir)); if (newdir == NULL) err(EX_OSERR, "cannot allocate memory"); newdir->path = path; SLIST_INSERT_HEAD(&datadirs, newdir, next); } int main(int argc, char *argv[]) { int c, flags; const char *cmdarg; const char *dev; int error; flags = 0; error = 0; cmdarg = ""; /* To keep gcc3 happy. */ /* * Add all default data dirs to the list first. */ datadir_add(DEFAULT_DATADIR); while ((c = getopt(argc, argv, "d:hi:m:uv")) != -1) { switch (c) { case 'd': datadir_add(optarg); break; case 'i': flags |= FLAG_I; cmdarg = optarg; break; case 'm': flags |= FLAG_M; cmdarg = optarg; break; case 'u': flags |= FLAG_U; break; case 'v': verbosity_level++; break; case 'h': /* FALLTHROUGH */ default: usage(); /* NOTREACHED */ } } argc -= optind; argv += optind; if (argc < 1) { usage(); /* NOTREACHED */ } dev = argv[0]; c = flags & (FLAG_I | FLAG_M | FLAG_U); switch (c) { case FLAG_I: error = do_cpuid(cmdarg, dev); break; case FLAG_M: error = do_msr(cmdarg, dev); break; case FLAG_U: error = do_update(dev); break; default: usage(); /* Only one command can be selected. */ } SLIST_FREE(&datadirs, next, free); return (error); } Index: head/usr.sbin/cpucontrol/via.c =================================================================== --- head/usr.sbin/cpucontrol/via.c (nonexistent) +++ head/usr.sbin/cpucontrol/via.c (revision 228436) @@ -0,0 +1,222 @@ +/*- + * Copyright (c) 2011 Fabien Thomas . + * 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 +__FBSDID("$FreeBSD$"); + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "cpucontrol.h" +#include "via.h" + +int +via_probe(int fd) +{ + char vendor[13]; + int error; + cpuctl_cpuid_args_t 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, CENTAUR_VENDOR_ID, sizeof(CENTAUR_VENDOR_ID)) != 0) + return (1); + + /* TODO: detect Nano CPU. */ + return (0); +} + +void +via_update(const char *dev, const char *path) +{ + int fd, devfd; + struct stat st; + uint32_t *fw_image; + uint32_t sum; + unsigned int i; + size_t payload_size; + via_fw_header_t *fw_header; + uint32_t signature, flags; + int32_t revision; + void *fw_data; + size_t data_size, total_size; + cpuctl_msr_args_t msrargs = { + .msr = MSR_IA32_PLATFORM_ID, + }; + cpuctl_cpuid_args_t idargs = { + .level = 1, /* Signature. */ + }; + cpuctl_update_args_t args; + int error; + + assert(path); + assert(dev); + + fd = -1; + devfd = -1; + fw_image = MAP_FAILED; + devfd = open(dev, O_RDWR); + if (devfd < 0) { + WARN(0, "could not open %s for writing", dev); + return; + } + error = ioctl(devfd, CPUCTL_CPUID, &idargs); + if (error < 0) { + WARN(0, "ioctl(%s)", dev); + goto fail; + } + signature = idargs.data[0]; + error = ioctl(devfd, CPUCTL_RDMSR, &msrargs); + if (error < 0) { + WARN(0, "ioctl(%s)", dev); + goto fail; + } + + /* + * MSR_IA32_PLATFORM_ID contains flag in BCD in bits 52-50. + */ + flags = 1 << ((msrargs.data >> 50) & 7); + msrargs.msr = MSR_BIOS_SIGN; + error = ioctl(devfd, CPUCTL_RDMSR, &msrargs); + if (error < 0) { + WARN(0, "ioctl(%s)", dev); + goto fail; + } + revision = msrargs.data >> 32; /* Revision in the high dword. */ + WARNX(2, "found cpu type %#x family %#x model %#x stepping %#x.", + (signature >> 12) & 0x03, (signature >> 8) & 0x0f, + (signature >> 4) & 0x0f, (signature >> 0) & 0x0f); + /* + * Open firmware image. + */ + fd = open(path, O_RDONLY, 0); + if (fd < 0) { + WARN(0, "open(%s)", path); + return; + } + error = fstat(fd, &st); + if (error != 0) { + WARN(0, "fstat(%s)", path); + goto fail; + } + if (st.st_size < 0 || (unsigned)st.st_size < sizeof(*fw_header)) { + WARNX(2, "file too short: %s", path); + goto fail; + } + + /* + * mmap the whole image. + */ + fw_image = (uint32_t *)mmap(NULL, st.st_size, PROT_READ, + MAP_PRIVATE, fd, 0); + if (fw_image == MAP_FAILED) { + WARN(0, "mmap(%s)", path); + goto fail; + } + fw_header = (via_fw_header_t *)fw_image; + if (fw_header->signature != VIA_HEADER_SIGNATURE || + fw_header->loader_revision != VIA_LOADER_REVISION) { + WARNX(2, "%s is not a valid via firmware: version mismatch", + path); + goto fail; + } + data_size = fw_header->data_size; + total_size = fw_header->total_size; + if (total_size > (unsigned)st.st_size || st.st_size < 0) { + WARNX(2, "file too short: %s", path); + goto fail; + } + payload_size = data_size + sizeof(*fw_header); + + /* + * Check the primary checksum. + */ + sum = 0; + for (i = 0; i < (payload_size / sizeof(uint32_t)); i++) + sum += *((uint32_t *)fw_image + i); + if (sum != 0) { + WARNX(2, "%s: update data checksum invalid", path); + goto fail; + } + + fw_data = fw_header + 1; /* Pointer to the update data. */ + + /* + * Check if the given image is ok for this cpu. + */ + if (signature != fw_header->cpu_signature) + goto fail; + + if (fw_header->revision != 0 && revision >= fw_header->revision) { + WARNX(1, "skipping %s of rev %#x: up to date", + path, fw_header->revision); + goto fail; + } + fprintf(stderr, "%s: updating cpu %s from rev %#x to rev %#x... ", + path, dev, revision, fw_header->revision); + args.data = fw_data; + args.size = data_size; + error = ioctl(devfd, CPUCTL_UPDATE, &args); + if (error < 0) { + fprintf(stderr, "failed.\n"); + WARN(0, "ioctl()"); + goto fail; + } + fprintf(stderr, "done.\n"); + +fail: + if (fw_image != MAP_FAILED) + if (munmap(fw_image, st.st_size) != 0) + warn("munmap(%s)", path); + if (devfd >= 0) + close(devfd); + if (fd >= 0) + close(fd); + return; +} Property changes on: head/usr.sbin/cpucontrol/via.c ___________________________________________________________________ Added: svn:keywords ## -0,0 +1 ## +FreeBSD=%H \ No newline at end of property Index: head/usr.sbin/cpucontrol/via.h =================================================================== --- head/usr.sbin/cpucontrol/via.h (nonexistent) +++ head/usr.sbin/cpucontrol/via.h (revision 228436) @@ -0,0 +1,63 @@ +/*- + * Copyright (c) 2011 Fabien Thomas . + * 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. + * + * $FreeBSD$ + */ + +#ifndef VIA_H +#define VIA_H + +/* + * Prototypes. + */ +ucode_probe_t via_probe; +ucode_update_t via_update; + +typedef struct via_fw_header { + uint32_t signature; /* Signature. */ + int32_t revision; /* Unique version number. */ + uint32_t date; /* Date of creation in BCD. */ + uint32_t cpu_signature; /* Extended family, extended + model, type, family, model + and stepping. */ + uint32_t checksum; /* Sum of all DWORDS should + be 0. */ + uint32_t loader_revision; /* Version of the loader + required to load update. */ + uint32_t reserverd1; /* Platform IDs encoded in + the lower 8 bits. */ + uint32_t data_size; + uint32_t total_size; + uint8_t reserved2[12]; +} via_fw_header_t; + +typedef struct via_cpu_signature { + uint32_t cpu_signature; + uint32_t checksum; +} via_cpu_signature_t; + +#define VIA_HEADER_SIGNATURE 0x53415252 +#define VIA_LOADER_REVISION 0x00000001 + +#endif /* !VIA_H */ Property changes on: head/usr.sbin/cpucontrol/via.h ___________________________________________________________________ Added: svn:keywords ## -0,0 +1 ## +FreeBSD=%H \ No newline at end of property