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tpm: Add TPM2 support for write_lock

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Implement this API function for TPM2.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
This commit is contained in:
Simon Glass
2021-02-06 14:23:41 -07:00
committed by Tom Rini
parent 6719cbe31a
commit 7785bc1d5f
3 changed files with 36 additions and 1 deletions
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12
include/tpm-v2.h
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@@ -243,6 +243,7 @@ enum tpm2_command_codes {
TPM2_CC_NV_DEFINE_SPACE = 0x012a,
TPM2_CC_PCR_SETAUTHPOL = 0x012C,
TPM2_CC_NV_WRITE = 0x0137,
TPM2_CC_NV_WRITELOCK = 0x0138,
TPM2_CC_DAM_RESET = 0x0139,
TPM2_CC_DAM_PARAMETERS = 0x013A,
TPM2_CC_NV_READ = 0x014E,
@@ -572,4 +573,15 @@ u32 tpm2_pcr_setauthvalue(struct udevice *dev, const char *pw,
*/
u32 tpm2_get_random(struct udevice *dev, void *data, u32 count);
/**
* Lock data in the TPM
*
* Once locked the data cannot be written until after a reboot
*
* @dev TPM device
* @index Index of data to lock
* @return code of the operation
*/
u32 tpm2_write_lock(struct udevice *dev, u32 index);
#endif /* __TPM_V2_H */