568 lines
15 KiB
C
568 lines
15 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2015 Google, Inc
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*/
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#include <common.h>
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#include <command.h>
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#include <cpu_func.h>
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#include <log.h>
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#include <tpm-v1.h>
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#include "tpm-user-utils.h"
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/* Prints error and returns on failure */
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#define TPM_CHECK(tpm_command) do { \
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uint32_t result; \
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\
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result = (tpm_command); \
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if (result != TPM_SUCCESS) { \
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printf("TEST FAILED: line %d: " #tpm_command ": 0x%x\n", \
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__LINE__, result); \
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return result; \
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} \
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} while (0)
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#define INDEX0 0xda70
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#define INDEX1 0xda71
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#define INDEX2 0xda72
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#define INDEX3 0xda73
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#define INDEX_INITIALISED 0xda80
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#define PHYS_PRESENCE 4
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#define PRESENCE 8
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static uint32_t TlclStartupIfNeeded(struct udevice *dev)
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{
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uint32_t result = tpm_startup(dev, TPM_ST_CLEAR);
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return result == TPM_INVALID_POSTINIT ? TPM_SUCCESS : result;
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}
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static int test_timer(struct udevice *dev)
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{
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printf("get_timer(0) = %lu\n", get_timer(0));
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return 0;
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}
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static uint32_t tpm_get_flags(struct udevice *dev, uint8_t *disable,
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uint8_t *deactivated, uint8_t *nvlocked)
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{
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struct tpm_permanent_flags pflags;
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uint32_t result;
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result = tpm_get_permanent_flags(dev, &pflags);
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if (result)
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return result;
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if (disable)
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*disable = pflags.disable;
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if (deactivated)
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*deactivated = pflags.deactivated;
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if (nvlocked)
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*nvlocked = pflags.nv_locked;
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debug("TPM: Got flags disable=%d, deactivated=%d, nvlocked=%d\n",
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pflags.disable, pflags.deactivated, pflags.nv_locked);
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return 0;
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}
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static uint32_t tpm_nv_write_value_lock(struct udevice *dev, uint32_t index)
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{
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debug("TPM: Write lock 0x%x\n", index);
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return tpm_nv_write_value(dev, index, NULL, 0);
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}
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static int tpm_is_owned(struct udevice *dev)
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{
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uint8_t response[TPM_PUBEK_SIZE];
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uint32_t result;
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result = tpm_read_pubek(dev, response, sizeof(response));
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return result != TPM_SUCCESS;
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}
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static int test_early_extend(struct udevice *dev)
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{
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uint8_t value_in[20];
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uint8_t value_out[20];
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printf("Testing earlyextend ...");
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tpm_init(dev);
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TPM_CHECK(tpm_startup(dev, TPM_ST_CLEAR));
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TPM_CHECK(tpm_continue_self_test(dev));
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TPM_CHECK(tpm_extend(dev, 1, value_in, value_out));
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printf("done\n");
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return 0;
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}
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static int test_early_nvram(struct udevice *dev)
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{
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uint32_t x;
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printf("Testing earlynvram ...");
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tpm_init(dev);
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TPM_CHECK(tpm_startup(dev, TPM_ST_CLEAR));
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TPM_CHECK(tpm_continue_self_test(dev));
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TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
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TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
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printf("done\n");
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return 0;
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}
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static int test_early_nvram2(struct udevice *dev)
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{
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uint32_t x;
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printf("Testing earlynvram2 ...");
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tpm_init(dev);
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TPM_CHECK(tpm_startup(dev, TPM_ST_CLEAR));
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TPM_CHECK(tpm_continue_self_test(dev));
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TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
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TPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
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printf("done\n");
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return 0;
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}
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static int test_enable(struct udevice *dev)
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{
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uint8_t disable = 0, deactivated = 0;
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printf("Testing enable ...\n");
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tpm_init(dev);
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TPM_CHECK(TlclStartupIfNeeded(dev));
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TPM_CHECK(tpm_self_test_full(dev));
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TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
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TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
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printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
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TPM_CHECK(tpm_physical_enable(dev));
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TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
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TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
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printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
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if (disable == 1 || deactivated == 1)
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printf("\tfailed to enable or activate\n");
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printf("\tdone\n");
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return 0;
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}
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#define reboot() do { \
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printf("\trebooting...\n"); \
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reset_cpu(0); \
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} while (0)
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static int test_fast_enable(struct udevice *dev)
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{
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uint8_t disable = 0, deactivated = 0;
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int i;
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printf("Testing fastenable ...\n");
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tpm_init(dev);
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TPM_CHECK(TlclStartupIfNeeded(dev));
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TPM_CHECK(tpm_self_test_full(dev));
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TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
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TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
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printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
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for (i = 0; i < 2; i++) {
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TPM_CHECK(tpm_force_clear(dev));
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TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
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printf("\tdisable is %d, deactivated is %d\n", disable,
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deactivated);
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assert(disable == 1 && deactivated == 1);
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TPM_CHECK(tpm_physical_enable(dev));
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TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
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TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
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printf("\tdisable is %d, deactivated is %d\n", disable,
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deactivated);
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assert(disable == 0 && deactivated == 0);
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}
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printf("\tdone\n");
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return 0;
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}
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static int test_global_lock(struct udevice *dev)
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{
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uint32_t zero = 0;
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uint32_t result;
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uint32_t x;
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printf("Testing globallock ...\n");
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tpm_init(dev);
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TPM_CHECK(TlclStartupIfNeeded(dev));
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TPM_CHECK(tpm_self_test_full(dev));
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TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
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TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
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TPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&zero,
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sizeof(uint32_t)));
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TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
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TPM_CHECK(tpm_nv_write_value(dev, INDEX1, (uint8_t *)&zero,
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sizeof(uint32_t)));
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TPM_CHECK(tpm_set_global_lock(dev));
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/* Verifies that write to index0 fails */
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x = 1;
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result = tpm_nv_write_value(dev, INDEX0, (uint8_t *)&x, sizeof(x));
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assert(result == TPM_AREA_LOCKED);
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TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
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assert(x == 0);
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/* Verifies that write to index1 is still possible */
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x = 2;
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TPM_CHECK(tpm_nv_write_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
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TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
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assert(x == 2);
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/* Turns off PP */
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tpm_tsc_physical_presence(dev, PHYS_PRESENCE);
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/* Verifies that write to index1 fails */
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x = 3;
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result = tpm_nv_write_value(dev, INDEX1, (uint8_t *)&x, sizeof(x));
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assert(result == TPM_BAD_PRESENCE);
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TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
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assert(x == 2);
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printf("\tdone\n");
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return 0;
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}
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static int test_lock(struct udevice *dev)
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{
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printf("Testing lock ...\n");
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tpm_init(dev);
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tpm_startup(dev, TPM_ST_CLEAR);
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tpm_self_test_full(dev);
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tpm_tsc_physical_presence(dev, PRESENCE);
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tpm_nv_write_value_lock(dev, INDEX0);
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printf("\tLocked 0x%x\n", INDEX0);
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printf("\tdone\n");
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return 0;
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}
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static void initialise_spaces(struct udevice *dev)
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{
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uint32_t zero = 0;
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uint32_t perm = TPM_NV_PER_WRITE_STCLEAR | TPM_NV_PER_PPWRITE;
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printf("\tInitialising spaces\n");
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tpm_nv_set_locked(dev); /* useful only the first time */
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tpm_nv_define_space(dev, INDEX0, perm, 4);
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tpm_nv_write_value(dev, INDEX0, (uint8_t *)&zero, 4);
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tpm_nv_define_space(dev, INDEX1, perm, 4);
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tpm_nv_write_value(dev, INDEX1, (uint8_t *)&zero, 4);
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tpm_nv_define_space(dev, INDEX2, perm, 4);
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tpm_nv_write_value(dev, INDEX2, (uint8_t *)&zero, 4);
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tpm_nv_define_space(dev, INDEX3, perm, 4);
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tpm_nv_write_value(dev, INDEX3, (uint8_t *)&zero, 4);
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perm = TPM_NV_PER_READ_STCLEAR | TPM_NV_PER_WRITE_STCLEAR |
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TPM_NV_PER_PPWRITE;
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tpm_nv_define_space(dev, INDEX_INITIALISED, perm, 1);
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}
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static int test_readonly(struct udevice *dev)
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{
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uint8_t c;
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uint32_t index_0, index_1, index_2, index_3;
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int read0, read1, read2, read3;
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printf("Testing readonly ...\n");
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tpm_init(dev);
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tpm_startup(dev, TPM_ST_CLEAR);
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tpm_self_test_full(dev);
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tpm_tsc_physical_presence(dev, PRESENCE);
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/*
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* Checks if initialisation has completed by trying to read-lock a
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* space that's created at the end of initialisation
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*/
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if (tpm_nv_read_value(dev, INDEX_INITIALISED, &c, 0) == TPM_BADINDEX) {
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/* The initialisation did not complete */
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initialise_spaces(dev);
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}
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/* Checks if spaces are OK or messed up */
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read0 = tpm_nv_read_value(dev, INDEX0, (uint8_t *)&index_0,
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sizeof(index_0));
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read1 = tpm_nv_read_value(dev, INDEX1, (uint8_t *)&index_1,
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sizeof(index_1));
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read2 = tpm_nv_read_value(dev, INDEX2, (uint8_t *)&index_2,
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sizeof(index_2));
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read3 = tpm_nv_read_value(dev, INDEX3, (uint8_t *)&index_3,
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sizeof(index_3));
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if (read0 || read1 || read2 || read3) {
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printf("Invalid contents\n");
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return 0;
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}
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/*
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* Writes space, and locks it. Then attempts to write again.
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* I really wish I could use the imperative.
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*/
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index_0 += 1;
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if (tpm_nv_write_value(dev, INDEX0, (uint8_t *)&index_0,
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sizeof(index_0) !=
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TPM_SUCCESS)) {
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pr_err("\tcould not write index 0\n");
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}
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tpm_nv_write_value_lock(dev, INDEX0);
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if (tpm_nv_write_value(dev, INDEX0, (uint8_t *)&index_0,
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sizeof(index_0)) ==
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TPM_SUCCESS)
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pr_err("\tindex 0 is not locked\n");
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printf("\tdone\n");
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return 0;
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}
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static int test_redefine_unowned(struct udevice *dev)
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{
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uint32_t perm;
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uint32_t result;
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uint32_t x;
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printf("Testing redefine_unowned ...");
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tpm_init(dev);
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TPM_CHECK(TlclStartupIfNeeded(dev));
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TPM_CHECK(tpm_self_test_full(dev));
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TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
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assert(!tpm_is_owned(dev));
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/* Ensures spaces exist. */
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TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
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TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
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/* Redefines spaces a couple of times. */
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perm = TPM_NV_PER_PPWRITE | TPM_NV_PER_GLOBALLOCK;
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TPM_CHECK(tpm_nv_define_space(dev, INDEX0, perm, 2 * sizeof(uint32_t)));
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TPM_CHECK(tpm_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t)));
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perm = TPM_NV_PER_PPWRITE;
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TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, 2 * sizeof(uint32_t)));
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TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t)));
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/* Sets the global lock */
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tpm_set_global_lock(dev);
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/* Verifies that index0 cannot be redefined */
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result = tpm_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t));
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assert(result == TPM_AREA_LOCKED);
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/* Checks that index1 can */
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TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, 2 * sizeof(uint32_t)));
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TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t)));
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/* Turns off PP */
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tpm_tsc_physical_presence(dev, PHYS_PRESENCE);
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/* Verifies that neither index0 nor index1 can be redefined */
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result = tpm_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t));
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assert(result == TPM_BAD_PRESENCE);
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result = tpm_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t));
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assert(result == TPM_BAD_PRESENCE);
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printf("done\n");
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return 0;
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}
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#define PERMPPGL (TPM_NV_PER_PPWRITE | TPM_NV_PER_GLOBALLOCK)
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#define PERMPP TPM_NV_PER_PPWRITE
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static int test_space_perm(struct udevice *dev)
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{
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uint32_t perm;
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printf("Testing spaceperm ...");
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tpm_init(dev);
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TPM_CHECK(TlclStartupIfNeeded(dev));
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TPM_CHECK(tpm_continue_self_test(dev));
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TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
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TPM_CHECK(tpm_get_permissions(dev, INDEX0, &perm));
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assert((perm & PERMPPGL) == PERMPPGL);
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TPM_CHECK(tpm_get_permissions(dev, INDEX1, &perm));
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assert((perm & PERMPP) == PERMPP);
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printf("done\n");
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return 0;
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}
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static int test_startup(struct udevice *dev)
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{
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uint32_t result;
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printf("Testing startup ...\n");
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tpm_init(dev);
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result = tpm_startup(dev, TPM_ST_CLEAR);
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if (result != 0 && result != TPM_INVALID_POSTINIT)
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printf("\ttpm startup failed with 0x%x\n", result);
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result = tpm_get_flags(dev, NULL, NULL, NULL);
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if (result != 0)
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printf("\ttpm getflags failed with 0x%x\n", result);
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printf("\texecuting SelfTestFull\n");
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tpm_self_test_full(dev);
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result = tpm_get_flags(dev, NULL, NULL, NULL);
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if (result != 0)
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printf("\ttpm getflags failed with 0x%x\n", result);
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printf("\tdone\n");
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return 0;
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}
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/*
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* Runs [op] and ensures it returns success and doesn't run longer than
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* [time_limit] in milliseconds.
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*/
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#define TTPM_CHECK(op, time_limit) do { \
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ulong start, time; \
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uint32_t __result; \
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\
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start = get_timer(0); \
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__result = op; \
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if (__result != TPM_SUCCESS) { \
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printf("\t" #op ": error 0x%x\n", __result); \
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return -1; \
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} \
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time = get_timer(start); \
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printf("\t" #op ": %lu ms\n", time); \
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if (time > (ulong)time_limit) { \
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printf("\t" #op " exceeded " #time_limit " ms\n"); \
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} \
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} while (0)
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static int test_timing(struct udevice *dev)
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{
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uint8_t in[20], out[20];
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uint32_t x;
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printf("Testing timing ...");
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tpm_init(dev);
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TTPM_CHECK(TlclStartupIfNeeded(dev), 50);
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TTPM_CHECK(tpm_continue_self_test(dev), 100);
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TTPM_CHECK(tpm_self_test_full(dev), 1000);
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TTPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE), 100);
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TTPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)),
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100);
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TTPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)),
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100);
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TTPM_CHECK(tpm_extend(dev, 0, in, out), 200);
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TTPM_CHECK(tpm_set_global_lock(dev), 50);
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TTPM_CHECK(tpm_tsc_physical_presence(dev, PHYS_PRESENCE), 100);
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printf("done\n");
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return 0;
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}
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#define TPM_MAX_NV_WRITES_NOOWNER 64
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static int test_write_limit(struct udevice *dev)
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{
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uint32_t result;
|
|
int i;
|
|
|
|
printf("Testing writelimit ...\n");
|
|
tpm_init(dev);
|
|
TPM_CHECK(TlclStartupIfNeeded(dev));
|
|
TPM_CHECK(tpm_self_test_full(dev));
|
|
TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
|
|
TPM_CHECK(tpm_force_clear(dev));
|
|
TPM_CHECK(tpm_physical_enable(dev));
|
|
TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
|
|
|
|
for (i = 0; i < TPM_MAX_NV_WRITES_NOOWNER + 2; i++) {
|
|
printf("\twriting %d\n", i);
|
|
result = tpm_nv_write_value(dev, INDEX0, (uint8_t *)&i,
|
|
sizeof(i));
|
|
switch (result) {
|
|
case TPM_SUCCESS:
|
|
break;
|
|
case TPM_MAXNVWRITES:
|
|
assert(i >= TPM_MAX_NV_WRITES_NOOWNER);
|
|
default:
|
|
pr_err("\tunexpected error code %d (0x%x)\n",
|
|
result, result);
|
|
}
|
|
}
|
|
|
|
/* Reset write count */
|
|
TPM_CHECK(tpm_force_clear(dev));
|
|
TPM_CHECK(tpm_physical_enable(dev));
|
|
TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
|
|
|
|
/* Try writing again. */
|
|
TPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&i, sizeof(i)));
|
|
printf("\tdone\n");
|
|
return 0;
|
|
}
|
|
|
|
#define VOIDTEST(XFUNC) \
|
|
int do_test_##XFUNC(struct cmd_tbl *cmd_tbl, int flag, int argc, \
|
|
char *const argv[]) \
|
|
{ \
|
|
struct udevice *dev; \
|
|
int ret; \
|
|
\
|
|
ret = get_tpm(&dev); \
|
|
if (ret) \
|
|
return ret; \
|
|
return test_##XFUNC(dev); \
|
|
}
|
|
|
|
#define VOIDENT(XNAME) \
|
|
U_BOOT_CMD_MKENT(XNAME, 0, 1, do_test_##XNAME, "", ""),
|
|
|
|
VOIDTEST(early_extend)
|
|
VOIDTEST(early_nvram)
|
|
VOIDTEST(early_nvram2)
|
|
VOIDTEST(enable)
|
|
VOIDTEST(fast_enable)
|
|
VOIDTEST(global_lock)
|
|
VOIDTEST(lock)
|
|
VOIDTEST(readonly)
|
|
VOIDTEST(redefine_unowned)
|
|
VOIDTEST(space_perm)
|
|
VOIDTEST(startup)
|
|
VOIDTEST(timing)
|
|
VOIDTEST(write_limit)
|
|
VOIDTEST(timer)
|
|
|
|
static struct cmd_tbl cmd_cros_tpm_sub[] = {
|
|
VOIDENT(early_extend)
|
|
VOIDENT(early_nvram)
|
|
VOIDENT(early_nvram2)
|
|
VOIDENT(enable)
|
|
VOIDENT(fast_enable)
|
|
VOIDENT(global_lock)
|
|
VOIDENT(lock)
|
|
VOIDENT(readonly)
|
|
VOIDENT(redefine_unowned)
|
|
VOIDENT(space_perm)
|
|
VOIDENT(startup)
|
|
VOIDENT(timing)
|
|
VOIDENT(write_limit)
|
|
VOIDENT(timer)
|
|
};
|
|
|
|
static int do_tpmtest(struct cmd_tbl *cmdtp, int flag, int argc,
|
|
char *const argv[])
|
|
{
|
|
struct cmd_tbl *c;
|
|
int i;
|
|
|
|
printf("argc = %d, argv = ", argc);
|
|
|
|
for (i = 0; i < argc; i++)
|
|
printf(" %s", argv[i]);
|
|
|
|
printf("\n------\n");
|
|
|
|
argc--;
|
|
argv++;
|
|
c = find_cmd_tbl(argv[0], cmd_cros_tpm_sub,
|
|
ARRAY_SIZE(cmd_cros_tpm_sub));
|
|
return c ? c->cmd(cmdtp, flag, argc, argv) : cmd_usage(cmdtp);
|
|
}
|
|
|
|
U_BOOT_CMD(tpmtest, 2, 1, do_tpmtest, "TPM tests",
|
|
"\n\tearly_extend\n"
|
|
"\tearly_nvram\n"
|
|
"\tearly_nvram2\n"
|
|
"\tenable\n"
|
|
"\tfast_enable\n"
|
|
"\tglobal_lock\n"
|
|
"\tlock\n"
|
|
"\treadonly\n"
|
|
"\tredefine_unowned\n"
|
|
"\tspace_perm\n"
|
|
"\tstartup\n"
|
|
"\ttiming\n"
|
|
"\twrite_limit\n");
|