/* * QTest testcase for TPM CRB * * Copyright (c) 2018 Red Hat, Inc. * * Authors: * Marc-André Lureau <marcandre.lureau@redhat.com> * * This work is licensed under the terms of the GNU GPL, version 2 or later. * See the COPYING file in the top-level directory. */ #include "qemu/osdep.h" #include <glib/gstdio.h> #include "hw/acpi/tpm.h" #include "io/channel-socket.h" #include "libqtest.h" #include "qemu/module.h" #include "tpm-emu.h" #define TPM_CMD "\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00" static void tpm_crb_test(const void *data) { const TestState *s = data; uint32_t intfid = readl(TPM_CRB_ADDR_BASE + A_CRB_INTF_ID); uint32_t csize = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_CMD_SIZE); uint64_t caddr = readq(TPM_CRB_ADDR_BASE + A_CRB_CTRL_CMD_LADDR); uint32_t rsize = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_RSP_SIZE); uint64_t raddr = readq(TPM_CRB_ADDR_BASE + A_CRB_CTRL_RSP_ADDR); uint8_t locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE); uint32_t locctrl = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL); uint32_t locsts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS); uint32_t sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS); g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceType), ==, 1); g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceVersion), ==, 1); g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapLocality), ==, 0); g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapCRBIdleBypass), ==, 0); g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapDataXferSizeSupport), ==, 3); g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapFIFO), ==, 0); g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapCRB), ==, 1); g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceSelector), ==, 1); g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, RID), ==, 0); g_assert_cmpint(csize, >=, 128); g_assert_cmpint(rsize, >=, 128); g_assert_cmpint(caddr, >, TPM_CRB_ADDR_BASE); g_assert_cmpint(raddr, >, TPM_CRB_ADDR_BASE); g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1); g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 0); g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0); g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0); g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1); g_assert_cmpint(locctrl, ==, 0); g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, Granted), ==, 0); g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, beenSeized), ==, 0); g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 1); g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0); /* request access to locality 0 */ writeb(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL, 1); /* granted bit must be set now */ locsts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS); g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, Granted), ==, 1); g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, beenSeized), ==, 0); /* we must have an assigned locality */ locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE); g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1); g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 1); g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0); g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0); g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1); /* set into ready state */ writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_REQ, 1); /* TPM must not be in the idle state */ sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS); g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 0); g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0); memwrite(caddr, TPM_CMD, sizeof(TPM_CMD)); uint32_t start = 1; uint64_t end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND; writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START, start); do { start = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START); if ((start & 1) == 0) { break; } } while (g_get_monotonic_time() < end_time); start = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START); g_assert_cmpint(start & 1, ==, 0); /* TPM must still not be in the idle state */ sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS); g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 0); g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0); struct tpm_hdr tpm_msg; memread(raddr, &tpm_msg, sizeof(tpm_msg)); g_assert_cmpmem(&tpm_msg, sizeof(tpm_msg), s->tpm_msg, sizeof(*s->tpm_msg)); /* set TPM into idle state */ writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_REQ, 2); /* idle state must be indicated now */ sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS); g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 1); g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0); /* relinquish locality */ writel(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL, 2); /* Granted flag must be cleared */ sts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS); g_assert_cmpint(FIELD_EX32(sts, CRB_LOC_STS, Granted), ==, 0); g_assert_cmpint(FIELD_EX32(sts, CRB_LOC_STS, beenSeized), ==, 0); /* no locality may be assigned */ locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE); g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1); g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 0); g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0); g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0); g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1); } int main(int argc, char **argv) { int ret; char *args, *tmp_path = g_dir_make_tmp("qemu-tpm-crb-test.XXXXXX", NULL); GThread *thread; TestState test; module_call_init(MODULE_INIT_QOM); g_test_init(&argc, &argv, NULL); test.addr = g_new0(SocketAddress, 1); test.addr->type = SOCKET_ADDRESS_TYPE_UNIX; test.addr->u.q_unix.path = g_build_filename(tmp_path, "sock", NULL); g_mutex_init(&test.data_mutex); g_cond_init(&test.data_cond); test.data_cond_signal = false; thread = g_thread_new(NULL, tpm_emu_ctrl_thread, &test); tpm_emu_test_wait_cond(&test); args = g_strdup_printf( "-chardev socket,id=chr,path=%s " "-tpmdev emulator,id=dev,chardev=chr " "-device tpm-crb,tpmdev=dev", test.addr->u.q_unix.path); qtest_start(args); qtest_add_data_func("/tpm-crb/test", &test, tpm_crb_test); ret = g_test_run(); qtest_end(); g_thread_join(thread); g_unlink(test.addr->u.q_unix.path); qapi_free_SocketAddress(test.addr); g_rmdir(tmp_path); g_free(tmp_path); g_free(args); return ret; }