diff options
Diffstat (limited to 'include/tpm-v2.h')
| -rw-r--r-- | include/tpm-v2.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/include/tpm-v2.h b/include/tpm-v2.h index 56eaa65815..df67a196cf 100644 --- a/include/tpm-v2.h +++ b/include/tpm-v2.h @@ -237,10 +237,14 @@ enum tpm2_handles { enum tpm2_command_codes { TPM2_CC_STARTUP = 0x0144, TPM2_CC_SELF_TEST = 0x0143, + TPM2_CC_HIER_CONTROL = 0x0121, TPM2_CC_CLEAR = 0x0126, TPM2_CC_CLEARCONTROL = 0x0127, TPM2_CC_HIERCHANGEAUTH = 0x0129, + 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, @@ -271,6 +275,7 @@ enum tpm2_return_codes { TPM2_RC_COMMAND_CODE = TPM2_RC_VER1 + 0x0043, TPM2_RC_AUTHSIZE = TPM2_RC_VER1 + 0x0044, TPM2_RC_AUTH_CONTEXT = TPM2_RC_VER1 + 0x0045, + TPM2_RC_NV_DEFINED = TPM2_RC_VER1 + 0x004c, TPM2_RC_NEEDS_TEST = TPM2_RC_VER1 + 0x0053, TPM2_RC_WARN = 0x0900, TPM2_RC_TESTING = TPM2_RC_WARN + 0x000A, @@ -355,6 +360,20 @@ 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. * @@ -389,6 +408,23 @@ u32 tpm2_clear(struct udevice *dev, u32 handle, const char *pw, const ssize_t pw_sz); /** + * Issue a TPM_NV_DefineSpace command + * + * This allows a space to be defined with given attributes and policy + * + * @dev TPM device + * @space_index index of the area + * @space_size size of area in bytes + * @nv_attributes TPM_NV_ATTRIBUTES of the area + * @nv_policy policy to use + * @nv_policy_size size of the policy + * @return return code of the operation + */ +u32 tpm2_nv_define_space(struct udevice *dev, u32 space_index, + size_t space_size, u32 nv_attributes, + const u8 *nv_policy, size_t nv_policy_size); + +/** * Issue a TPM2_PCR_Extend command. * * @dev TPM device @@ -403,6 +439,29 @@ 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 @@ -516,4 +575,26 @@ 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); + +/** + * Disable access to any platform data + * + * This can be called to close off access to the firmware data in the data, + * before calling the kernel. + * + * @dev TPM device + * @return code of the operation + */ +u32 tpm2_disable_platform_hierarchy(struct udevice *dev); + #endif /* __TPM_V2_H */ |