diff options
| author | Simon Glass <sjg@chromium.org> | 2023-02-21 06:24:52 -0700 |
|---|---|---|
| committer | Ilias Apalodimas <ilias.apalodimas@linaro.org> | 2023-02-28 09:44:33 +0200 |
| commit | a11be4c303eabb142e074c7ca14b6ae0d293f0cb (patch) | |
| tree | 99ebfce19f20a994bdc246bff46b39758675512e /lib/tpm_api.c | |
| parent | 4fef65715196364cb28ddbd7396b6015d78c778c (diff) | |
tpm: Implement tpm_auto_start() for TPMv1.2
Add an implementation of this, moving the common call to tpm_init() up
into the common API implementation.
Add a test.
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Diffstat (limited to 'lib/tpm_api.c')
| -rw-r--r-- | lib/tpm_api.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/lib/tpm_api.c b/lib/tpm_api.c index 5b2c11a277c..3ef5e811794 100644 --- a/lib/tpm_api.c +++ b/lib/tpm_api.c @@ -37,10 +37,23 @@ 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); + u32 rc; - return -ENOSYS; + /* + * 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; + + if (tpm_is_v1(dev)) + return tpm1_auto_start(dev); + else if (tpm_is_v2(dev)) + return tpm2_auto_start(dev); + else + return -ENOSYS; } u32 tpm_resume(struct udevice *dev) |