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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2022 Google LLC
* Written by Simon Glass <sjg@chromium.org>
*/
#include <dm.h>
#include <tpm_api.h>
#include <dm/test.h>
#include <test/test.h>
#include <test/ut.h>
/*
* get_tpm_version() - Get a TPM of the given version
*
* @version: Version to get
* @devp: Returns the TPM device
* Returns: 0 if OK, -ENODEV if not found
*/
static int get_tpm_version(enum tpm_version version, struct udevice **devp)
{
struct udevice *dev;
/*
* For now we have to probe each TPM, since the version is set up in
* of_to_plat(). We could require TPMs to declare their version when
* probed, to avoid this
*/
uclass_foreach_dev_probe(UCLASS_TPM, dev) {
if (tpm_get_version(dev) == version) {
*devp = dev;
return 0;
}
}
return -ENODEV;
}
/* Basic test of initing a TPM */
static int test_tpm_init(struct unit_test_state *uts, enum tpm_version version)
{
struct udevice *dev;
/* check probe success */
ut_assertok(get_tpm_version(version, &dev));
ut_assertok(tpm_init(dev));
return 0;
}
static int dm_test_tpm(struct unit_test_state *uts)
{
ut_assertok(test_tpm_init(uts, TPM_V1));
ut_assertok(test_tpm_init(uts, TPM_V2));
return 0;
}
DM_TEST(dm_test_tpm, UT_TESTF_SCAN_FDT);
/* Test report_state */
static int dm_test_tpm_report_state(struct unit_test_state *uts)
{
struct udevice *dev;
char buf[50];
/* check probe success */
ut_assertok(get_tpm_version(TPM_V2, &dev));
ut_assert(tpm_report_state(dev, buf, sizeof(buf)));
ut_asserteq_str("init_done=0", buf);
ut_assertok(tpm_auto_start(dev));
ut_assert(tpm_report_state(dev, buf, sizeof(buf)));
ut_asserteq_str("init_done=1", buf);
return 0;
}
DM_TEST(dm_test_tpm_report_state, UT_TESTF_SCAN_FDT);
/**
* test_tpm_autostart() - check the tpm_auto_start() call
*
* @uts: Unit test state
* @version: TPM version to use
* @reinit: true to call tpm_init() first
* Returns 0 if OK, non-zero on failure
*/
static int test_tpm_autostart(struct unit_test_state *uts,
enum tpm_version version, bool reinit)
{
struct udevice *dev;
/* check probe success */
ut_assertok(get_tpm_version(version, &dev));
if (reinit)
ut_assertok(tpm_init(dev));
/*
* tpm_auto_start will rerun tpm_init() if reinit, but handles the
* -EBUSY return code internally.
*/
ut_assertok(tpm_auto_start(dev));
return 0;
}
static int dm_test_tpm_autostart(struct unit_test_state *uts)
{
ut_assertok(test_tpm_autostart(uts, TPM_V1, false));
ut_assertok(test_tpm_autostart(uts, TPM_V2, false));
return 0;
}
DM_TEST(dm_test_tpm_autostart, UT_TESTF_SCAN_FDT);
static int dm_test_tpm_autostart_reinit(struct unit_test_state *uts)
{
ut_assertok(test_tpm_autostart(uts, TPM_V1, true));
ut_assertok(test_tpm_autostart(uts, TPM_V2, true));
return 0;
}
DM_TEST(dm_test_tpm_autostart_reinit, UT_TESTF_SCAN_FDT);
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