1 /* 2 * QTest testcase for TPM CRB 3 * 4 * Copyright (c) 2018 Red Hat, Inc. 5 * 6 * Authors: 7 * Marc-André Lureau <marcandre.lureau@redhat.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 13 #include "qemu/osdep.h" 14 #include <glib/gstdio.h> 15 16 #include "hw/acpi/tpm.h" 17 #include "io/channel-socket.h" 18 #include "libqtest.h" 19 #include "tpm-emu.h" 20 21 #define TPM_CMD "\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00" 22 23 static void tpm_crb_test(const void *data) 24 { 25 const TestState *s = data; 26 uint32_t intfid = readl(TPM_CRB_ADDR_BASE + A_CRB_INTF_ID); 27 uint32_t csize = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_CMD_SIZE); 28 uint64_t caddr = readq(TPM_CRB_ADDR_BASE + A_CRB_CTRL_CMD_LADDR); 29 uint32_t rsize = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_RSP_SIZE); 30 uint64_t raddr = readq(TPM_CRB_ADDR_BASE + A_CRB_CTRL_RSP_ADDR); 31 uint8_t locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE); 32 uint32_t locctrl = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL); 33 uint32_t locsts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS); 34 uint32_t sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS); 35 36 g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceType), ==, 1); 37 g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceVersion), ==, 1); 38 g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapLocality), ==, 0); 39 g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapCRBIdleBypass), ==, 0); 40 g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapDataXferSizeSupport), 41 ==, 3); 42 g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapFIFO), ==, 0); 43 g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapCRB), ==, 1); 44 g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceSelector), ==, 1); 45 g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, RID), ==, 0); 46 47 g_assert_cmpint(csize, >=, 128); 48 g_assert_cmpint(rsize, >=, 128); 49 g_assert_cmpint(caddr, >, TPM_CRB_ADDR_BASE); 50 g_assert_cmpint(raddr, >, TPM_CRB_ADDR_BASE); 51 52 g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1); 53 g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 0); 54 g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0); 55 g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0); 56 g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1); 57 58 g_assert_cmpint(locctrl, ==, 0); 59 60 g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, Granted), ==, 0); 61 g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, beenSeized), ==, 0); 62 63 g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 1); 64 g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0); 65 66 /* request access to locality 0 */ 67 writeb(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL, 1); 68 69 /* granted bit must be set now */ 70 locsts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS); 71 g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, Granted), ==, 1); 72 g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, beenSeized), ==, 0); 73 74 /* we must have an assigned locality */ 75 locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE); 76 g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1); 77 g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 1); 78 g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0); 79 g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0); 80 g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1); 81 82 /* set into ready state */ 83 writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_REQ, 1); 84 85 /* TPM must not be in the idle state */ 86 sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS); 87 g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 0); 88 g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0); 89 90 memwrite(caddr, TPM_CMD, sizeof(TPM_CMD)); 91 92 uint32_t start = 1; 93 uint64_t end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND; 94 writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START, start); 95 do { 96 start = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START); 97 if ((start & 1) == 0) { 98 break; 99 } 100 } while (g_get_monotonic_time() < end_time); 101 start = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START); 102 g_assert_cmpint(start & 1, ==, 0); 103 104 /* TPM must still not be in the idle state */ 105 sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS); 106 g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 0); 107 g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0); 108 109 struct tpm_hdr tpm_msg; 110 memread(raddr, &tpm_msg, sizeof(tpm_msg)); 111 g_assert_cmpmem(&tpm_msg, sizeof(tpm_msg), s->tpm_msg, sizeof(*s->tpm_msg)); 112 113 /* set TPM into idle state */ 114 writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_REQ, 2); 115 116 /* idle state must be indicated now */ 117 sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS); 118 g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 1); 119 g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0); 120 121 /* relinquish locality */ 122 writel(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL, 2); 123 124 /* Granted flag must be cleared */ 125 sts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS); 126 g_assert_cmpint(FIELD_EX32(sts, CRB_LOC_STS, Granted), ==, 0); 127 g_assert_cmpint(FIELD_EX32(sts, CRB_LOC_STS, beenSeized), ==, 0); 128 129 /* no locality may be assigned */ 130 locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE); 131 g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1); 132 g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 0); 133 g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0); 134 g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0); 135 g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1); 136 137 } 138 139 int main(int argc, char **argv) 140 { 141 int ret; 142 char *args, *tmp_path = g_dir_make_tmp("qemu-tpm-crb-test.XXXXXX", NULL); 143 GThread *thread; 144 TestState test; 145 146 module_call_init(MODULE_INIT_QOM); 147 g_test_init(&argc, &argv, NULL); 148 149 test.addr = g_new0(SocketAddress, 1); 150 test.addr->type = SOCKET_ADDRESS_TYPE_UNIX; 151 test.addr->u.q_unix.path = g_build_filename(tmp_path, "sock", NULL); 152 g_mutex_init(&test.data_mutex); 153 g_cond_init(&test.data_cond); 154 test.data_cond_signal = false; 155 156 thread = g_thread_new(NULL, tpm_emu_ctrl_thread, &test); 157 tpm_emu_test_wait_cond(&test); 158 159 args = g_strdup_printf( 160 "-chardev socket,id=chr,path=%s " 161 "-tpmdev emulator,id=dev,chardev=chr " 162 "-device tpm-crb,tpmdev=dev", 163 test.addr->u.q_unix.path); 164 qtest_start(args); 165 166 qtest_add_data_func("/tpm-crb/test", &test, tpm_crb_test); 167 ret = g_test_run(); 168 169 qtest_end(); 170 171 g_thread_join(thread); 172 g_unlink(test.addr->u.q_unix.path); 173 qapi_free_SocketAddress(test.addr); 174 g_rmdir(tmp_path); 175 g_free(tmp_path); 176 g_free(args); 177 return ret; 178 } 179