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Stefan Bergerd1a0cf72013-02-27 12:47:49 -05001/*
2 * TPM configuration
3 *
4 * Copyright (C) 2011-2013 IBM Corporation
5 *
6 * Authors:
7 * Stefan Berger <stefanb@us.ibm.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
10 * See the COPYING file in the top-level directory.
11 *
12 * Based on net.c
13 */
Markus Armbrustere688df62018-02-01 12:18:31 +010014
Peter Maydelld38ea872016-01-29 17:50:05 +000015#include "qemu/osdep.h"
Stefan Bergerd1a0cf72013-02-27 12:47:49 -050016
Markus Armbrustere688df62018-02-01 12:18:31 +010017#include "qapi/error.h"
Markus Armbruster9af23982018-02-11 10:36:01 +010018#include "qapi/qapi-commands-tpm.h"
Stefan Bergerd1a0cf72013-02-27 12:47:49 -050019#include "qapi/qmp/qerror.h"
Paolo Bonzinidccfcd02013-04-08 16:55:25 +020020#include "sysemu/tpm_backend.h"
Paolo Bonzinibdee56f2013-04-02 18:28:41 +020021#include "sysemu/tpm.h"
Stefan Bergerd1a0cf72013-02-27 12:47:49 -050022#include "qemu/config-file.h"
Markus Armbrusterd49b6832015-03-17 18:29:20 +010023#include "qemu/error-report.h"
Stefan Bergerd1a0cf72013-02-27 12:47:49 -050024
25static QLIST_HEAD(, TPMBackend) tpm_backends =
26 QLIST_HEAD_INITIALIZER(tpm_backends);
27
Marc-André Lureaud31076b2017-10-10 00:55:49 +020028static const TPMBackendClass *
29tpm_be_find_by_type(enum TpmType type)
Marc-André Lureauf3faa1d2017-10-10 00:55:45 +020030{
31 ObjectClass *oc;
Marc-André Lureauf3faa1d2017-10-10 00:55:45 +020032 char *typename = g_strdup_printf("tpm-%s", TpmType_str(type));
33
34 oc = object_class_by_name(typename);
35 g_free(typename);
36
37 if (!object_class_dynamic_cast(oc, TYPE_TPM_BACKEND)) {
38 return NULL;
39 }
40
Marc-André Lureaud31076b2017-10-10 00:55:49 +020041 return TPM_BACKEND_CLASS(oc);
Marc-André Lureauf3faa1d2017-10-10 00:55:45 +020042}
43
Stefan Bergerd1a0cf72013-02-27 12:47:49 -050044/*
45 * Walk the list of available TPM backend drivers and display them on the
46 * screen.
47 */
Paolo Bonzinibdee56f2013-04-02 18:28:41 +020048static void tpm_display_backend_drivers(void)
Stefan Bergerd1a0cf72013-02-27 12:47:49 -050049{
50 int i;
51
52 fprintf(stderr, "Supported TPM types (choose only one):\n");
53
Marc-André Lureaua9a72ae2017-08-24 10:45:58 +020054 for (i = 0; i < TPM_TYPE__MAX; i++) {
Marc-André Lureaud31076b2017-10-10 00:55:49 +020055 const TPMBackendClass *bc = tpm_be_find_by_type(i);
56 if (!bc) {
Marc-André Lureaua9a72ae2017-08-24 10:45:58 +020057 continue;
58 }
Marc-André Lureaud31076b2017-10-10 00:55:49 +020059 fprintf(stderr, "%12s %s\n", TpmType_str(i), bc->desc);
Stefan Bergerd1a0cf72013-02-27 12:47:49 -050060 }
61 fprintf(stderr, "\n");
62}
63
64/*
65 * Find the TPM with the given Id
66 */
Marc-André Lureaud36e7db2017-11-06 19:39:14 +010067TPMBackend *qemu_find_tpm_be(const char *id)
Stefan Bergerd1a0cf72013-02-27 12:47:49 -050068{
69 TPMBackend *drv;
70
71 if (id) {
72 QLIST_FOREACH(drv, &tpm_backends, list) {
73 if (!strcmp(drv->id, id)) {
74 return drv;
75 }
76 }
77 }
78
79 return NULL;
80}
81
Marc-André Lureau76ae76b2017-10-10 00:55:51 +020082static int tpm_init_tpmdev(void *dummy, QemuOpts *opts, Error **errp)
Stefan Bergerd1a0cf72013-02-27 12:47:49 -050083{
84 const char *value;
85 const char *id;
Marc-André Lureaud31076b2017-10-10 00:55:49 +020086 const TPMBackendClass *be;
Stefan Bergerd1a0cf72013-02-27 12:47:49 -050087 TPMBackend *drv;
Stefan Berger8f0605c2013-03-28 07:26:21 -040088 Error *local_err = NULL;
Marc-André Lureaud91a7a52017-10-10 00:55:46 +020089 int i;
Stefan Bergerd1a0cf72013-02-27 12:47:49 -050090
91 if (!QLIST_EMPTY(&tpm_backends)) {
Gonglei27215a22015-02-25 12:22:35 +080092 error_report("Only one TPM is allowed.");
Stefan Bergerd1a0cf72013-02-27 12:47:49 -050093 return 1;
94 }
95
96 id = qemu_opts_id(opts);
97 if (id == NULL) {
Markus Armbruster8b53a192015-03-17 12:09:02 +010098 error_report(QERR_MISSING_PARAMETER, "id");
Stefan Bergerd1a0cf72013-02-27 12:47:49 -050099 return 1;
100 }
101
102 value = qemu_opt_get(opts, "type");
103 if (!value) {
Markus Armbruster8b53a192015-03-17 12:09:02 +0100104 error_report(QERR_MISSING_PARAMETER, "type");
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500105 tpm_display_backend_drivers();
106 return 1;
107 }
108
Marc-André Lureaud91a7a52017-10-10 00:55:46 +0200109 i = qapi_enum_parse(&TpmType_lookup, value, -1, NULL);
Marc-André Lureaud31076b2017-10-10 00:55:49 +0200110 be = i >= 0 ? tpm_be_find_by_type(i) : NULL;
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500111 if (be == NULL) {
Markus Armbruster8b53a192015-03-17 12:09:02 +0100112 error_report(QERR_INVALID_PARAMETER_VALUE,
113 "type", "a TPM backend type");
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500114 tpm_display_backend_drivers();
115 return 1;
116 }
117
Stefan Bergerbb716232013-04-22 10:41:39 -0400118 /* validate backend specific opts */
119 qemu_opts_validate(opts, be->opts, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +0100120 if (local_err) {
Markus Armbrusterbc09a282015-02-10 15:11:17 +0100121 error_report_err(local_err);
Stefan Bergerbb716232013-04-22 10:41:39 -0400122 return 1;
123 }
124
Marc-André Lureau9f7c0ef2017-11-06 19:39:09 +0100125 drv = be->create(opts);
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500126 if (!drv) {
127 return 1;
128 }
129
Marc-André Lureau9f7c0ef2017-11-06 19:39:09 +0100130 drv->id = g_strdup(id);
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500131 QLIST_INSERT_HEAD(&tpm_backends, drv, list);
132
133 return 0;
134}
135
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500136/*
137 * Walk the list of TPM backend drivers that are in use and call their
138 * destroy function to have them cleaned up.
139 */
140void tpm_cleanup(void)
141{
142 TPMBackend *drv, *next;
143
144 QLIST_FOREACH_SAFE(drv, &tpm_backends, list, next) {
145 QLIST_REMOVE(drv, list);
Amarnath Vallurif35fe5c2017-09-29 14:10:15 +0300146 object_unref(OBJECT(drv));
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500147 }
148}
149
150/*
151 * Initialize the TPM. Process the tpmdev command line options describing the
152 * TPM backend.
153 */
154int tpm_init(void)
155{
Markus Armbruster28d0de72015-03-13 13:35:14 +0100156 if (qemu_opts_foreach(qemu_find_opts("tpmdev"),
157 tpm_init_tpmdev, NULL, NULL)) {
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500158 return -1;
159 }
160
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500161 return 0;
162}
163
164/*
165 * Parse the TPM configuration options.
166 * To display all available TPM backends the user may use '-tpmdev help'
167 */
168int tpm_config_parse(QemuOptsList *opts_list, const char *optarg)
169{
170 QemuOpts *opts;
171
172 if (!strcmp(optarg, "help")) {
173 tpm_display_backend_drivers();
174 return -1;
175 }
Markus Armbruster70b94332015-02-13 12:50:26 +0100176 opts = qemu_opts_parse_noisily(opts_list, optarg, true);
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500177 if (!opts) {
178 return -1;
179 }
180 return 0;
181}
182
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500183/*
Markus Armbrustereb815e22018-02-11 10:36:05 +0100184 * Walk the list of active TPM backends and collect information about them.
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500185 */
186TPMInfoList *qmp_query_tpm(Error **errp)
187{
188 TPMBackend *drv;
189 TPMInfoList *info, *head = NULL, *cur_item = NULL;
190
191 QLIST_FOREACH(drv, &tpm_backends, list) {
Marc-André Lureau191adc92017-11-06 19:39:04 +0100192 if (!drv->tpmif) {
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500193 continue;
194 }
Marc-André Lureau191adc92017-11-06 19:39:04 +0100195
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500196 info = g_new0(TPMInfoList, 1);
Amarnath Vallurif59864b2017-09-29 14:10:17 +0300197 info->value = tpm_backend_query_tpm(drv);
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500198
199 if (!cur_item) {
200 head = cur_item = info;
201 } else {
202 cur_item->next = info;
203 cur_item = info;
204 }
205 }
206
207 return head;
208}
209
210TpmTypeList *qmp_query_tpm_types(Error **errp)
211{
212 unsigned int i = 0;
213 TpmTypeList *head = NULL, *prev = NULL, *cur_item;
214
Eric Blake7fb1cf12015-11-18 01:52:57 -0700215 for (i = 0; i < TPM_TYPE__MAX; i++) {
Marc-André Lureaud31076b2017-10-10 00:55:49 +0200216 if (!tpm_be_find_by_type(i)) {
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500217 continue;
218 }
219 cur_item = g_new0(TpmTypeList, 1);
220 cur_item->value = i;
221
222 if (prev) {
223 prev->next = cur_item;
224 }
225 if (!head) {
226 head = cur_item;
227 }
228 prev = cur_item;
229 }
230
231 return head;
232}
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500233TpmModelList *qmp_query_tpm_models(Error **errp)
234{
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500235 TpmModelList *head = NULL, *prev = NULL, *cur_item;
Marc-André Lureaud3fd9532017-11-06 19:39:25 +0100236 GSList *e, *l = object_class_get_list(TYPE_TPM_IF, false);
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500237
Marc-André Lureaud3fd9532017-11-06 19:39:25 +0100238 for (e = l; e; e = e->next) {
239 TPMIfClass *c = TPM_IF_CLASS(e->data);
240
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500241 cur_item = g_new0(TpmModelList, 1);
Marc-André Lureaud3fd9532017-11-06 19:39:25 +0100242 cur_item->value = c->model;
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500243
244 if (prev) {
245 prev->next = cur_item;
246 }
247 if (!head) {
248 head = cur_item;
249 }
250 prev = cur_item;
251 }
Marc-André Lureaud3fd9532017-11-06 19:39:25 +0100252 g_slist_free(l);
Stefan Bergerd1a0cf72013-02-27 12:47:49 -0500253
254 return head;
255}