mirror of
https://github.com/AsahiLinux/u-boot
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565 lines
14 KiB
C
565 lines
14 KiB
C
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/*
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* Copyright (c) 2015 Google, Inc
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <command.h>
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#include <environment.h>
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#include <tpm.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(void)
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{
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uint32_t result = tpm_startup(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(void)
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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(uint8_t *disable, uint8_t *deactivated,
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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(&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_set_global_lock(void)
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{
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uint32_t x;
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debug("TPM: Set global lock\n");
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return tpm_nv_write_value(INDEX0, (uint8_t *)&x, 0);
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}
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static uint32_t tpm_nv_write_value_lock(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(index, NULL, 0);
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}
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static uint32_t tpm_nv_set_locked(void)
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{
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debug("TPM: Set NV locked\n");
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return tpm_nv_define_space(TPM_NV_INDEX_LOCK, 0, 0);
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}
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static int tpm_is_owned(void)
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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(response, sizeof(response));
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return result != TPM_SUCCESS;
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}
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static int test_early_extend(void)
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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();
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TPM_CHECK(tpm_startup(TPM_ST_CLEAR));
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TPM_CHECK(tpm_continue_self_test());
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TPM_CHECK(tpm_extend(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(void)
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{
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uint32_t x;
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printf("Testing earlynvram ...");
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tpm_init();
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TPM_CHECK(tpm_startup(TPM_ST_CLEAR));
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TPM_CHECK(tpm_continue_self_test());
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TPM_CHECK(tpm_tsc_physical_presence(PRESENCE));
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TPM_CHECK(tpm_nv_read_value(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(void)
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{
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uint32_t x;
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printf("Testing earlynvram2 ...");
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tpm_init();
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TPM_CHECK(tpm_startup(TPM_ST_CLEAR));
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TPM_CHECK(tpm_continue_self_test());
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TPM_CHECK(tpm_tsc_physical_presence(PRESENCE));
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TPM_CHECK(tpm_nv_write_value(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(void)
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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();
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TPM_CHECK(TlclStartupIfNeeded());
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TPM_CHECK(tpm_self_test_full());
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TPM_CHECK(tpm_tsc_physical_presence(PRESENCE));
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TPM_CHECK(tpm_get_flags(&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());
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TPM_CHECK(tpm_physical_set_deactivated(0));
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TPM_CHECK(tpm_get_flags(&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(void)
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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();
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TPM_CHECK(TlclStartupIfNeeded());
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TPM_CHECK(tpm_self_test_full());
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TPM_CHECK(tpm_tsc_physical_presence(PRESENCE));
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TPM_CHECK(tpm_get_flags(&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());
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TPM_CHECK(tpm_get_flags(&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());
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TPM_CHECK(tpm_physical_set_deactivated(0));
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TPM_CHECK(tpm_get_flags(&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(void)
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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();
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TPM_CHECK(TlclStartupIfNeeded());
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TPM_CHECK(tpm_self_test_full());
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TPM_CHECK(tpm_tsc_physical_presence(PRESENCE));
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TPM_CHECK(tpm_nv_read_value(INDEX0, (uint8_t *)&x, sizeof(x)));
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TPM_CHECK(tpm_nv_write_value(INDEX0, (uint8_t *)&zero,
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sizeof(uint32_t)));
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TPM_CHECK(tpm_nv_read_value(INDEX1, (uint8_t *)&x, sizeof(x)));
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TPM_CHECK(tpm_nv_write_value(INDEX1, (uint8_t *)&zero,
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sizeof(uint32_t)));
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TPM_CHECK(tpm_set_global_lock());
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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(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(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(INDEX1, (uint8_t *)&x, sizeof(x)));
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TPM_CHECK(tpm_nv_read_value(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(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(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(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(void)
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{
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printf("Testing lock ...\n");
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tpm_init();
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tpm_startup(TPM_ST_CLEAR);
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tpm_self_test_full();
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tpm_tsc_physical_presence(PRESENCE);
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tpm_nv_write_value_lock(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(void)
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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(); /* useful only the first time */
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tpm_nv_define_space(INDEX0, perm, 4);
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tpm_nv_write_value(INDEX0, (uint8_t *)&zero, 4);
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tpm_nv_define_space(INDEX1, perm, 4);
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tpm_nv_write_value(INDEX1, (uint8_t *)&zero, 4);
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tpm_nv_define_space(INDEX2, perm, 4);
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tpm_nv_write_value(INDEX2, (uint8_t *)&zero, 4);
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tpm_nv_define_space(INDEX3, perm, 4);
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tpm_nv_write_value(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(INDEX_INITIALISED, perm, 1);
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}
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static int test_readonly(void)
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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();
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tpm_startup(TPM_ST_CLEAR);
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tpm_self_test_full();
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tpm_tsc_physical_presence(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(INDEX_INITIALISED, &c, 0) == TPM_BADINDEX) {
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/* The initialisation did not complete */
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initialise_spaces();
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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(INDEX0, (uint8_t *)&index_0, sizeof(index_0));
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read1 = tpm_nv_read_value(INDEX1, (uint8_t *)&index_1, sizeof(index_1));
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read2 = tpm_nv_read_value(INDEX2, (uint8_t *)&index_2, sizeof(index_2));
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read3 = tpm_nv_read_value(INDEX3, (uint8_t *)&index_3, 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(INDEX0, (uint8_t *)&index_0, sizeof(index_0) !=
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TPM_SUCCESS)) {
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error("\tcould not write index 0\n");
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}
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tpm_nv_write_value_lock(INDEX0);
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if (tpm_nv_write_value(INDEX0, (uint8_t *)&index_0, sizeof(index_0)) ==
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TPM_SUCCESS)
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error("\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(void)
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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();
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TPM_CHECK(TlclStartupIfNeeded());
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TPM_CHECK(tpm_self_test_full());
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TPM_CHECK(tpm_tsc_physical_presence(PRESENCE));
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assert(!tpm_is_owned());
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/* Ensures spaces exist. */
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TPM_CHECK(tpm_nv_read_value(INDEX0, (uint8_t *)&x, sizeof(x)));
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TPM_CHECK(tpm_nv_read_value(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(INDEX0, perm, 2 * sizeof(uint32_t)));
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TPM_CHECK(tpm_nv_define_space(INDEX0, perm, sizeof(uint32_t)));
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perm = TPM_NV_PER_PPWRITE;
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TPM_CHECK(tpm_nv_define_space(INDEX1, perm, 2 * sizeof(uint32_t)));
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TPM_CHECK(tpm_nv_define_space(INDEX1, perm, sizeof(uint32_t)));
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/* Sets the global lock */
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tpm_set_global_lock();
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/* Verifies that index0 cannot be redefined */
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result = tpm_nv_define_space(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(INDEX1, perm, 2 * sizeof(uint32_t)));
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TPM_CHECK(tpm_nv_define_space(INDEX1, perm, sizeof(uint32_t)));
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/* Turns off PP */
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tpm_tsc_physical_presence(PHYS_PRESENCE);
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/* Verifies that neither index0 nor index1 can be redefined */
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result = tpm_nv_define_space(INDEX0, perm, sizeof(uint32_t));
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assert(result == TPM_BAD_PRESENCE);
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result = tpm_nv_define_space(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(void)
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{
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uint32_t perm;
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printf("Testing spaceperm ...");
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tpm_init();
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TPM_CHECK(TlclStartupIfNeeded());
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TPM_CHECK(tpm_continue_self_test());
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TPM_CHECK(tpm_tsc_physical_presence(PRESENCE));
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TPM_CHECK(tpm_get_permissions(INDEX0, &perm));
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assert((perm & PERMPPGL) == PERMPPGL);
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TPM_CHECK(tpm_get_permissions(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(void)
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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();
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result = tpm_startup(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(NULL, NULL, NULL);
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if (result != 0)
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printf("\ttpm getflags failed with 0x%x\n", result);
|
||
|
printf("\texecuting SelfTestFull\n");
|
||
|
tpm_self_test_full();
|
||
|
result = tpm_get_flags(NULL, NULL, NULL);
|
||
|
if (result != 0)
|
||
|
printf("\ttpm getflags failed with 0x%x\n", result);
|
||
|
printf("\tdone\n");
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Runs [op] and ensures it returns success and doesn't run longer than
|
||
|
* [time_limit] in milliseconds.
|
||
|
*/
|
||
|
#define TTPM_CHECK(op, time_limit) do { \
|
||
|
ulong start, time; \
|
||
|
uint32_t __result; \
|
||
|
\
|
||
|
start = get_timer(0); \
|
||
|
__result = op; \
|
||
|
if (__result != TPM_SUCCESS) { \
|
||
|
printf("\t" #op ": error 0x%x\n", __result); \
|
||
|
return -1; \
|
||
|
} \
|
||
|
time = get_timer(start); \
|
||
|
printf("\t" #op ": %lu ms\n", time); \
|
||
|
if (time > (ulong)time_limit) { \
|
||
|
printf("\t" #op " exceeded " #time_limit " ms\n"); \
|
||
|
} \
|
||
|
} while (0)
|
||
|
|
||
|
|
||
|
static int test_timing(void)
|
||
|
{
|
||
|
uint32_t x;
|
||
|
uint8_t in[20], out[20];
|
||
|
|
||
|
printf("Testing timing ...");
|
||
|
tpm_init();
|
||
|
TTPM_CHECK(TlclStartupIfNeeded(), 50);
|
||
|
TTPM_CHECK(tpm_continue_self_test(), 100);
|
||
|
TTPM_CHECK(tpm_self_test_full(), 1000);
|
||
|
TTPM_CHECK(tpm_tsc_physical_presence(PRESENCE), 100);
|
||
|
TTPM_CHECK(tpm_nv_write_value(INDEX0, (uint8_t *)&x, sizeof(x)), 100);
|
||
|
TTPM_CHECK(tpm_nv_read_value(INDEX0, (uint8_t *)&x, sizeof(x)), 100);
|
||
|
TTPM_CHECK(tpm_extend(0, in, out), 200);
|
||
|
TTPM_CHECK(tpm_set_global_lock(), 50);
|
||
|
TTPM_CHECK(tpm_tsc_physical_presence(PHYS_PRESENCE), 100);
|
||
|
printf("done\n");
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
#define TPM_MAX_NV_WRITES_NOOWNER 64
|
||
|
|
||
|
static int test_write_limit(void)
|
||
|
{
|
||
|
printf("Testing writelimit ...\n");
|
||
|
int i;
|
||
|
uint32_t result;
|
||
|
|
||
|
tpm_init();
|
||
|
TPM_CHECK(TlclStartupIfNeeded());
|
||
|
TPM_CHECK(tpm_self_test_full());
|
||
|
TPM_CHECK(tpm_tsc_physical_presence(PRESENCE));
|
||
|
TPM_CHECK(tpm_force_clear());
|
||
|
TPM_CHECK(tpm_physical_enable());
|
||
|
TPM_CHECK(tpm_physical_set_deactivated(0));
|
||
|
|
||
|
for (i = 0; i < TPM_MAX_NV_WRITES_NOOWNER + 2; i++) {
|
||
|
printf("\twriting %d\n", i);
|
||
|
result = tpm_nv_write_value(INDEX0, (uint8_t *)&i, sizeof(i));
|
||
|
switch (result) {
|
||
|
case TPM_SUCCESS:
|
||
|
break;
|
||
|
case TPM_MAXNVWRITES:
|
||
|
assert(i >= TPM_MAX_NV_WRITES_NOOWNER);
|
||
|
default:
|
||
|
error("\tunexpected error code %d (0x%x)\n",
|
||
|
result, result);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* Reset write count */
|
||
|
TPM_CHECK(tpm_force_clear());
|
||
|
TPM_CHECK(tpm_physical_enable());
|
||
|
TPM_CHECK(tpm_physical_set_deactivated(0));
|
||
|
|
||
|
/* Try writing again. */
|
||
|
TPM_CHECK(tpm_nv_write_value(INDEX0, (uint8_t *)&i, sizeof(i)));
|
||
|
printf("\tdone\n");
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
#define VOIDTEST(XFUNC) \
|
||
|
int do_test_##XFUNC(cmd_tbl_t *cmd_tbl, int flag, int argc, \
|
||
|
char * const argv[]) \
|
||
|
{ \
|
||
|
return test_##XFUNC(); \
|
||
|
}
|
||
|
|
||
|
#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 cmd_tbl_t 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(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
||
|
{
|
||
|
cmd_tbl_t *c;
|
||
|
|
||
|
printf("argc = %d, argv = ", argc);
|
||
|
do {
|
||
|
int i = 0;
|
||
|
|
||
|
for (i = 0; i < argc; i++)
|
||
|
printf(" %s", argv[i]);
|
||
|
printf("\n------\n");
|
||
|
} while (0);
|
||
|
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");
|