mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-10 15:14:43 +00:00
a557d258c6
This feature is used for measured boot, so we can add a log entry to the TCPA with some information about where the digest comes from. It is not currently supported in the TPM drivers, but add it to the API so that code which expects it can signal its request. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
572 lines
15 KiB
C
572 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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#include <tpm_api.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 = tpm1_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_pcr_extend(dev, 1, value_in, sizeof(value_in), value_out,
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"test"));
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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(); \
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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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tpm1_nv_set_locked(dev); /* useful only the first time */
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tpm1_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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tpm1_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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tpm1_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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tpm1_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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tpm1_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(tpm1_nv_define_space(dev, INDEX0, perm,
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2 * sizeof(uint32_t)));
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TPM_CHECK(tpm1_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t)));
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perm = TPM_NV_PER_PPWRITE;
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TPM_CHECK(tpm1_nv_define_space(dev, INDEX1, perm,
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2 * sizeof(uint32_t)));
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TPM_CHECK(tpm1_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 = tpm1_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(tpm1_nv_define_space(dev, INDEX1, perm,
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2 * sizeof(uint32_t)));
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TPM_CHECK(tpm1_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 = tpm1_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t));
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assert(result == TPM_BAD_PRESENCE);
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result = tpm1_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);
|
|
TTPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)),
|
|
100);
|
|
TTPM_CHECK(tpm_pcr_extend(dev, 0, in, sizeof(in), out, "test"), 200);
|
|
TTPM_CHECK(tpm_set_global_lock(dev), 50);
|
|
TTPM_CHECK(tpm_tsc_physical_presence(dev, PHYS_PRESENCE), 100);
|
|
printf("done\n");
|
|
return 0;
|
|
}
|
|
|
|
#define TPM_MAX_NV_WRITES_NOOWNER 64
|
|
|
|
static int test_write_limit(struct udevice *dev)
|
|
{
|
|
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");
|