diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/tpm-v2.c | 25 | ||||
| -rw-r--r-- | lib/tpm_api.c | 8 |
2 files changed, 33 insertions, 0 deletions
diff --git a/lib/tpm-v2.c b/lib/tpm-v2.c index 697b982e079..895b093bcb1 100644 --- a/lib/tpm-v2.c +++ b/lib/tpm-v2.c @@ -44,6 +44,31 @@ u32 tpm2_self_test(struct udevice *dev, enum tpm2_yes_no full_test) return tpm_sendrecv_command(dev, command_v2, NULL, NULL); } +u32 tpm2_auto_start(struct udevice *dev) +{ + u32 rc; + + /* + * the tpm_init() will return -EBUSY if the init has already happened + * The selftest and startup code can run multiple times with no side + * effects + */ + rc = tpm_init(dev); + if (rc && rc != -EBUSY) + return rc; + rc = tpm2_self_test(dev, TPMI_YES); + + if (rc == TPM2_RC_INITIALIZE) { + rc = tpm2_startup(dev, TPM2_SU_CLEAR); + if (rc) + return rc; + + rc = tpm2_self_test(dev, TPMI_YES); + } + + return rc; +} + u32 tpm2_clear(struct udevice *dev, u32 handle, const char *pw, const ssize_t pw_sz) { diff --git a/lib/tpm_api.c b/lib/tpm_api.c index 7e8df8795ef..5b2c11a277c 100644 --- a/lib/tpm_api.c +++ b/lib/tpm_api.c @@ -35,6 +35,14 @@ u32 tpm_startup(struct udevice *dev, enum tpm_startup_type mode) } } +u32 tpm_auto_start(struct udevice *dev) +{ + if (tpm_is_v2(dev)) + return tpm2_auto_start(dev); + + return -ENOSYS; +} + u32 tpm_resume(struct udevice *dev) { if (tpm_is_v1(dev)) |