1/* $NetBSD: $ */ 2/* 3 * Copyright (c) 2012 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Christoph Egger. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#include <sys/cdefs.h> 32__KERNEL_RCSID(0, "$NetBSD: $"); 33 34#include "opt_cpu_ucode.h" 35 36#include <sys/param.h> 37#include <sys/cpuio.h> 38#include <sys/cpu.h> 39 40#include <dev/firmload.h> 41 42#include <machine/cpuvar.h> 43#include <machine/cputypes.h> 44 45#include <x86/cpu_ucode.h> 46 47static struct cpu_ucode_softc ucode_softc; 48 49int 50cpu_ucode_get_version(void *data) 51{ 52 struct cpu_ucode *ucode = data; 53 54 switch (cpu_vendor) { 55 case CPUVENDOR_AMD: 56 return cpu_ucode_amd_get_version(ucode); 57 default: 58 ucode->version = (uint64_t)-1; 59 return EOPNOTSUPP; 60 } 61 62 return 0; 63} 64 65int 66cpu_ucode_md_open(firmware_handle_t *fwh, const char *fwname) 67{ 68 switch (cpu_vendor) { 69 case CPUVENDOR_AMD: 70 return cpu_ucode_amd_firmware_open(fwh, fwname); 71 case CPUVENDOR_INTEL: 72 return EOPNOTSUPP; /* not yet supported */ 73 default: 74 return EOPNOTSUPP; 75 } 76} 77 78int 79cpu_ucode_apply(void *data) 80{ 81 struct cpu_ucode *ucode = data; 82 struct cpu_ucode_softc *sc = &ucode_softc; 83 struct xen_platform_op op; 84 int error; 85 86 error = cpu_ucode_load(sc, ucode->fwname); 87 if (error) 88 return error; 89 90 op.cmd = XENPF_microcode_update; 91 set_xen_guest_handle(op.u.microcode.data, sc->sc_blob); 92 op.u.microcode.length = sc->sc_blobsize; 93 94 error = -HYPERVISOR_platform_op(&op); 95 96 if (sc->sc_blob) 97 firmware_free(sc->sc_blob, 0); 98 sc->sc_blob = NULL; 99 sc->sc_blobsize = 0; 100 return error; 101} 102