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| author | Simon Glass <sjg@chromium.org> | 2021-02-07 00:23:40 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2021-03-02 23:53:37 +0300 |
| commit | 6719cbe31afef2cba4bc10b33350b38c4a51c3ac (patch) | |
| tree | 8d89c0a703f86a2ef5d55f28e1876c3b53f981c8 /include/tpm-v2.h | |
| parent | eadcbc7896e8d3eefafc8a34dee125a7d7eecead (diff) | |
| download | u-boot-6719cbe31afef2cba4bc10b33350b38c4a51c3ac.tar.xz | |
tpm: Add TPM2 support for read/write values
Implement this API function for TPM2.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Diffstat (limited to 'include/tpm-v2.h')
| -rw-r--r-- | include/tpm-v2.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/include/tpm-v2.h b/include/tpm-v2.h index aa8b6512b2..b73a2d278e 100644 --- a/include/tpm-v2.h +++ b/include/tpm-v2.h @@ -242,6 +242,7 @@ enum tpm2_command_codes { TPM2_CC_HIERCHANGEAUTH = 0x0129, TPM2_CC_NV_DEFINE_SPACE = 0x012a, TPM2_CC_PCR_SETAUTHPOL = 0x012C, + TPM2_CC_NV_WRITE = 0x0137, TPM2_CC_DAM_RESET = 0x0139, TPM2_CC_DAM_PARAMETERS = 0x013A, TPM2_CC_NV_READ = 0x014E, @@ -356,6 +357,20 @@ enum { TPM_MAX_BUF_SIZE = 1260, }; +enum { + /* Secure storage for firmware settings */ + TPM_HT_PCR = 0, + TPM_HT_NV_INDEX, + TPM_HT_HMAC_SESSION, + TPM_HT_POLICY_SESSION, + + HR_SHIFT = 24, + HR_PCR = TPM_HT_PCR << HR_SHIFT, + HR_HMAC_SESSION = TPM_HT_HMAC_SESSION << HR_SHIFT, + HR_POLICY_SESSION = TPM_HT_POLICY_SESSION << HR_SHIFT, + HR_NV_INDEX = TPM_HT_NV_INDEX << HR_SHIFT, +}; + /** * Issue a TPM2_Startup command. * @@ -421,6 +436,29 @@ u32 tpm2_pcr_extend(struct udevice *dev, u32 index, u32 algorithm, const u8 *digest, u32 digest_len); /** + * Read data from the secure storage + * + * @dev TPM device + * @index Index of data to read + * @data Place to put data + * @count Number of bytes of data + * @return code of the operation + */ +u32 tpm2_nv_read_value(struct udevice *dev, u32 index, void *data, u32 count); + +/** + * Write data to the secure storage + * + * @dev TPM device + * @index Index of data to write + * @data Data to write + * @count Number of bytes of data + * @return code of the operation + */ +u32 tpm2_nv_write_value(struct udevice *dev, u32 index, const void *data, + u32 count); + +/** * Issue a TPM2_PCR_Read command. * * @dev TPM device |