diff options
Diffstat (limited to 'src/security/vboot/antirollback.h')
| -rw-r--r-- | src/security/vboot/antirollback.h | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/src/security/vboot/antirollback.h b/src/security/vboot/antirollback.h index 8b183da9a5..fcfa7a270c 100644 --- a/src/security/vboot/antirollback.h +++ b/src/security/vboot/antirollback.h @@ -24,6 +24,9 @@ enum vb2_pcr_digest; #define FWMP_NV_INDEX 0x100a /* 0x100b: Hash of MRC_CACHE training data for recovery boot */ #define MRC_REC_HASH_NV_INDEX 0x100b +/* 0x100c: OOBE autoconfig public key hashes */ +/* 0x100d: Hash of MRC_CACHE training data for non-recovery boot */ +#define MRC_RW_HASH_NV_INDEX 0x100d #define HASH_NV_SIZE VB2_SHA256_DIGEST_SIZE /* Structure definitions for TPM spaces */ @@ -57,23 +60,32 @@ uint32_t antirollback_write_space_kernel(struct vb2_context *ctx); uint32_t antirollback_lock_space_firmware(void); /* - * Read recovery hash data from TPM. - * @param index index into TPM NVRAM where hash is stored + * Read MRC hash data from TPM. + * @param index index into TPM NVRAM where hash is stored The index + * can be set to either MRC_REC_HASH_NV_INDEX or + * MRC_RW_HASH_NV_INDEX depending upon whether we are + * booting in recovery or normal mode. * @param data pointer to buffer where hash from TPM read into * @param size size of buffer */ uint32_t antirollback_read_space_mrc_hash(uint32_t index, uint8_t *data, uint32_t size); /* - * Write new hash data to recovery space in TPM.\ - * @param index index into TPM NVRAM where hash is stored + * Write new hash data to MRC space in TPM.\ + * @param index index into TPM NVRAM where hash is stored The index + * can be set to either MRC_REC_HASH_NV_INDEX or + * MRC_RW_HASH_NV_INDEX depending upon whether we are + * booting in recovery or normal mode. * @param data pointer to buffer of hash value to be written * @param size size of buffer */ uint32_t antirollback_write_space_mrc_hash(uint32_t index, const uint8_t *data, uint32_t size); /* - * Lock down recovery hash space in TPM. - * @param index index into TPM NVRAM where hash is stored + * Lock down MRC hash space in TPM. + * @param index index into TPM NVRAM where hash is stored The index + * can be set to either MRC_REC_HASH_NV_INDEX or + * MRC_RW_HASH_NV_INDEX depending upon whether we are + * booting in recovery or normal mode. */ uint32_t antirollback_lock_space_mrc_hash(uint32_t index); |