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tpm: Implement state command for Cr50

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Add a vendor-specific TPM2 command for this and implement it for Cr50.
Note: This is not part of the TPM spec, but is a Cr50 extension.

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>
This commit is contained in:
Simon Glass
2022-08-30 21:05:37 -06:00
committed by Ilias Apalodimas
parent 3bb4db4c38
commit 4c57ec76b7
3 changed files with 201 additions and 0 deletions
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13
include/tpm-v2.h
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@@ -658,4 +658,17 @@ u32 tpm2_disable_platform_hierarchy(struct udevice *dev);
u32 tpm2_submit_command(struct udevice *dev, const u8 *sendbuf,
u8 *recvbuf, size_t *recv_size);
/**
* tpm_cr50_report_state() - Report the Cr50 internal state
*
* @dev: TPM device
* @vendor_cmd: Vendor command number to send
* @vendor_subcmd: Vendor sub-command number to send
* @recvbuf: Buffer to save the response to
* @recv_size: Pointer to the size of the response buffer
* Return: result of the operation
*/
u32 tpm2_report_state(struct udevice *dev, uint vendor_cmd, uint vendor_subcmd,
u8 *recvbuf, size_t *recv_size);
#endif /* __TPM_V2_H */