4 * Copyright (C) 2011-2013 IBM Corporation
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.
14 #include "qemu/osdep.h"
16 #include "qapi/qmp/qerror.h"
17 #include "sysemu/tpm_backend.h"
18 #include "sysemu/tpm.h"
19 #include "qemu/config-file.h"
20 #include "qemu/error-report.h"
21 #include "qmp-commands.h"
23 static QLIST_HEAD(, TPMBackend) tpm_backends =
24 QLIST_HEAD_INITIALIZER(tpm_backends);
26 static const TPMBackendClass *
27 tpm_be_find_by_type(enum TpmType type)
30 char *typename = g_strdup_printf("tpm-%s", TpmType_str(type));
32 oc = object_class_by_name(typename);
35 if (!object_class_dynamic_cast(oc, TYPE_TPM_BACKEND)) {
39 return TPM_BACKEND_CLASS(oc);
43 * Walk the list of available TPM backend drivers and display them on the
46 static void tpm_display_backend_drivers(void)
50 fprintf(stderr, "Supported TPM types (choose only one):\n");
52 for (i = 0; i < TPM_TYPE__MAX; i++) {
53 const TPMBackendClass *bc = tpm_be_find_by_type(i);
57 fprintf(stderr, "%12s %s\n", TpmType_str(i), bc->desc);
59 fprintf(stderr, "\n");
63 * Find the TPM with the given Id
65 TPMBackend *qemu_find_tpm_be(const char *id)
70 QLIST_FOREACH(drv, &tpm_backends, list) {
71 if (!strcmp(drv->id, id)) {
80 static int tpm_init_tpmdev(void *dummy, QemuOpts *opts, Error **errp)
84 const TPMBackendClass *be;
86 Error *local_err = NULL;
89 if (!QLIST_EMPTY(&tpm_backends)) {
90 error_report("Only one TPM is allowed.");
94 id = qemu_opts_id(opts);
96 error_report(QERR_MISSING_PARAMETER, "id");
100 value = qemu_opt_get(opts, "type");
102 error_report(QERR_MISSING_PARAMETER, "type");
103 tpm_display_backend_drivers();
107 i = qapi_enum_parse(&TpmType_lookup, value, -1, NULL);
108 be = i >= 0 ? tpm_be_find_by_type(i) : NULL;
110 error_report(QERR_INVALID_PARAMETER_VALUE,
111 "type", "a TPM backend type");
112 tpm_display_backend_drivers();
116 /* validate backend specific opts */
117 qemu_opts_validate(opts, be->opts, &local_err);
119 error_report_err(local_err);
123 drv = be->create(opts);
128 drv->id = g_strdup(id);
129 QLIST_INSERT_HEAD(&tpm_backends, drv, list);
135 * Walk the list of TPM backend drivers that are in use and call their
136 * destroy function to have them cleaned up.
138 void tpm_cleanup(void)
140 TPMBackend *drv, *next;
142 QLIST_FOREACH_SAFE(drv, &tpm_backends, list, next) {
143 QLIST_REMOVE(drv, list);
144 object_unref(OBJECT(drv));
149 * Initialize the TPM. Process the tpmdev command line options describing the
154 if (qemu_opts_foreach(qemu_find_opts("tpmdev"),
155 tpm_init_tpmdev, NULL, NULL)) {
163 * Parse the TPM configuration options.
164 * To display all available TPM backends the user may use '-tpmdev help'
166 int tpm_config_parse(QemuOptsList *opts_list, const char *optarg)
170 if (!strcmp(optarg, "help")) {
171 tpm_display_backend_drivers();
174 opts = qemu_opts_parse_noisily(opts_list, optarg, true);
182 * Walk the list of active TPM backends and collect information about them
183 * following the schema description in qapi-schema.json.
185 TPMInfoList *qmp_query_tpm(Error **errp)
188 TPMInfoList *info, *head = NULL, *cur_item = NULL;
190 QLIST_FOREACH(drv, &tpm_backends, list) {
195 info = g_new0(TPMInfoList, 1);
196 info->value = tpm_backend_query_tpm(drv);
199 head = cur_item = info;
201 cur_item->next = info;
209 TpmTypeList *qmp_query_tpm_types(Error **errp)
212 TpmTypeList *head = NULL, *prev = NULL, *cur_item;
214 for (i = 0; i < TPM_TYPE__MAX; i++) {
215 if (!tpm_be_find_by_type(i)) {
218 cur_item = g_new0(TpmTypeList, 1);
222 prev->next = cur_item;
232 TpmModelList *qmp_query_tpm_models(Error **errp)
234 TpmModelList *head = NULL, *prev = NULL, *cur_item;
235 GSList *e, *l = object_class_get_list(TYPE_TPM_IF, false);
237 for (e = l; e; e = e->next) {
238 TPMIfClass *c = TPM_IF_CLASS(e->data);
240 cur_item = g_new0(TpmModelList, 1);
241 cur_item->value = c->model;
244 prev->next = cur_item;