diff options
Diffstat (limited to 'drivers/char/tpm/tpm.h')
| -rw-r--r-- | drivers/char/tpm/tpm.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index 917f727e6740..645136eea890 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -28,6 +28,12 @@ #include <linux/io.h> #include <linux/tpm.h> +enum tpm_const { + TPM_MINOR = 224, /* officially assigned */ + TPM_BUFSIZE = 4096, + TPM_NUM_DEVICES = 256, +}; + enum tpm_timeout { TPM_TIMEOUT = 5, /* msecs */ }; @@ -269,6 +275,21 @@ struct tpm_pcrextend_in { u8 hash[TPM_DIGEST_SIZE]; }__attribute__((packed)); +/* 128 bytes is an arbitrary cap. This could be as large as TPM_BUFSIZE - 18 + * bytes, but 128 is still a relatively large number of random bytes and + * anything much bigger causes users of struct tpm_cmd_t to start getting + * compiler warnings about stack frame size. */ +#define TPM_MAX_RNG_DATA 128 + +struct tpm_getrandom_out { + __be32 rng_data_len; + u8 rng_data[TPM_MAX_RNG_DATA]; +}__attribute__((packed)); + +struct tpm_getrandom_in { + __be32 num_bytes; +}__attribute__((packed)); + typedef union { struct tpm_getcap_params_out getcap_out; struct tpm_readpubek_params_out readpubek_out; @@ -277,6 +298,8 @@ typedef union { struct tpm_pcrread_in pcrread_in; struct tpm_pcrread_out pcrread_out; struct tpm_pcrextend_in pcrextend_in; + struct tpm_getrandom_in getrandom_in; + struct tpm_getrandom_out getrandom_out; } tpm_cmd_params; struct tpm_cmd_t { |