/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2003 Matthew N. Dodd * 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("$FreeBSD$"); /* * VPD decoder for IBM systems (Thinkpads) * http://www-1.ibm.com/support/docview.wss?uid=psg1MIGR-45120 */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Vital Product Data */ struct vpd { u_int16_t Header; /* 0x55AA */ u_int8_t Signature[3]; /* Always 'VPD' */ u_int8_t Length; /* Sructure Length */ u_int8_t Reserved[7]; /* Reserved */ u_int8_t BuildID[9]; /* BIOS Build ID */ u_int8_t BoxSerial[7]; /* Box Serial Number */ u_int8_t PlanarSerial[11]; /* Motherboard Serial Number */ u_int8_t MachType[7]; /* Machine Type/Model */ u_int8_t Checksum; /* Checksum */ } __packed; struct vpd_softc { device_t dev; struct resource * res; int rid; struct vpd * vpd; struct sysctl_ctx_list ctx; char BuildID[10]; char BoxSerial[8]; char PlanarSerial[12]; char MachineType[5]; char MachineModel[4]; }; #define VPD_START 0xf0000 #define VPD_STEP 0x10 #define VPD_OFF 2 #define VPD_LEN 3 #define VPD_SIG "VPD" #define RES2VPD(res) ((struct vpd *)rman_get_virtual(res)) #define ADDR2VPD(addr) ((struct vpd *)BIOS_PADDRTOVADDR(addr)) static devclass_t vpd_devclass; static void vpd_identify (driver_t *, device_t); static int vpd_probe (device_t); static int vpd_attach (device_t); static int vpd_detach (device_t); static int vpd_modevent (module_t, int, void *); static int vpd_cksum (struct vpd *); static SYSCTL_NODE(_hw, OID_AUTO, vpd, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, NULL); static SYSCTL_NODE(_hw_vpd, OID_AUTO, machine, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, NULL); static SYSCTL_NODE(_hw_vpd_machine, OID_AUTO, type, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, NULL); static SYSCTL_NODE(_hw_vpd_machine, OID_AUTO, model, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, NULL); static SYSCTL_NODE(_hw_vpd, OID_AUTO, build_id, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, NULL); static SYSCTL_NODE(_hw_vpd, OID_AUTO, serial, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, NULL); static SYSCTL_NODE(_hw_vpd_serial, OID_AUTO, box, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, NULL); static SYSCTL_NODE(_hw_vpd_serial, OID_AUTO, planar, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, NULL); static void vpd_identify (driver_t *driver, device_t parent) { device_t child; u_int32_t addr; int length; int rid; if (!device_is_alive(parent)) return; addr = bios_sigsearch(VPD_START, VPD_SIG, VPD_LEN, VPD_STEP, VPD_OFF); if (addr != 0) { rid = 0; length = ADDR2VPD(addr)->Length; child = BUS_ADD_CHILD(parent, 5, "vpd", -1); device_set_driver(child, driver); bus_set_resource(child, SYS_RES_MEMORY, rid, addr, length); device_set_desc(child, "Vital Product Data Area"); } return; } static int vpd_probe (device_t dev) { struct resource *res; int rid; int error; error = 0; rid = 0; res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); if (res == NULL) { device_printf(dev, "Unable to allocate memory resource.\n"); error = ENOMEM; goto bad; } if (vpd_cksum(RES2VPD(res))) device_printf(dev, "VPD checksum failed. BIOS update may be required.\n"); bad: if (res) bus_release_resource(dev, SYS_RES_MEMORY, rid, res); return (error); } static int vpd_attach (device_t dev) { struct vpd_softc *sc; char unit[4]; int error; sc = device_get_softc(dev); error = 0; sc->dev = dev; sc->rid = 0; sc->res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->rid, RF_ACTIVE); if (sc->res == NULL) { device_printf(dev, "Unable to allocate memory resource.\n"); error = ENOMEM; goto bad; } sc->vpd = RES2VPD(sc->res); snprintf(unit, sizeof(unit), "%d", device_get_unit(sc->dev)); snprintf(sc->MachineType, 5, "%.4s", sc->vpd->MachType); snprintf(sc->MachineModel, 4, "%.3s", sc->vpd->MachType+4); snprintf(sc->BuildID, 10, "%.9s", sc->vpd->BuildID); snprintf(sc->BoxSerial, 8, "%.7s", sc->vpd->BoxSerial); snprintf(sc->PlanarSerial, 12, "%.11s", sc->vpd->PlanarSerial); sysctl_ctx_init(&sc->ctx); SYSCTL_ADD_STRING(&sc->ctx, SYSCTL_STATIC_CHILDREN(_hw_vpd_machine_type), OID_AUTO, unit, CTLFLAG_RD, sc->MachineType, 0, NULL); SYSCTL_ADD_STRING(&sc->ctx, SYSCTL_STATIC_CHILDREN(_hw_vpd_machine_model), OID_AUTO, unit, CTLFLAG_RD, sc->MachineModel, 0, NULL); SYSCTL_ADD_STRING(&sc->ctx, SYSCTL_STATIC_CHILDREN(_hw_vpd_build_id), OID_AUTO, unit, CTLFLAG_RD, sc->BuildID, 0, NULL); SYSCTL_ADD_STRING(&sc->ctx, SYSCTL_STATIC_CHILDREN(_hw_vpd_serial_box), OID_AUTO, unit, CTLFLAG_RD, sc->BoxSerial, 0, NULL); SYSCTL_ADD_STRING(&sc->ctx, SYSCTL_STATIC_CHILDREN(_hw_vpd_serial_planar), OID_AUTO, unit, CTLFLAG_RD, sc->PlanarSerial, 0, NULL); device_printf(dev, "Machine Type: %.4s, Model: %.3s, Build ID: %.9s\n", sc->MachineType, sc->MachineModel, sc->BuildID); device_printf(dev, "Box Serial: %.7s, Planar Serial: %.11s\n", sc->BoxSerial, sc->PlanarSerial); return (0); bad: if (sc->res) bus_release_resource(dev, SYS_RES_MEMORY, sc->rid, sc->res); return (error); } static int vpd_detach (device_t dev) { struct vpd_softc *sc; sc = device_get_softc(dev); if (sc->res) bus_release_resource(dev, SYS_RES_MEMORY, sc->rid, sc->res); sysctl_ctx_free(&sc->ctx); return (0); } static int vpd_modevent (mod, what, arg) module_t mod; int what; void * arg; { device_t * devs; int count; int i; switch (what) { case MOD_LOAD: break; case MOD_UNLOAD: devclass_get_devices(vpd_devclass, &devs, &count); for (i = 0; i < count; i++) { device_delete_child(device_get_parent(devs[i]), devs[i]); } break; default: break; } return (0); } static device_method_t vpd_methods[] = { /* Device interface */ DEVMETHOD(device_identify, vpd_identify), DEVMETHOD(device_probe, vpd_probe), DEVMETHOD(device_attach, vpd_attach), DEVMETHOD(device_detach, vpd_detach), { 0, 0 } }; static driver_t vpd_driver = { "vpd", vpd_methods, sizeof(struct vpd_softc), }; DRIVER_MODULE(vpd, nexus, vpd_driver, vpd_devclass, vpd_modevent, 0); MODULE_VERSION(vpd, 1); /* * Perform a checksum over the VPD structure, starting with * the BuildID. (Jean Delvare ) */ static int vpd_cksum (struct vpd *v) { u_int8_t *ptr; u_int8_t cksum; int i; ptr = (u_int8_t *)v; cksum = 0; for (i = offsetof(struct vpd, BuildID); i < v->Length ; i++) cksum += ptr[i]; return (cksum); }