diff options
Diffstat (limited to 'firmware/2lib/include/2api.h')
| -rw-r--r-- | firmware/2lib/include/2api.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/firmware/2lib/include/2api.h b/firmware/2lib/include/2api.h index 9db5019f..69f4ddec 100644 --- a/firmware/2lib/include/2api.h +++ b/firmware/2lib/include/2api.h @@ -42,6 +42,9 @@ */ #define VB2_WORKBUF_RECOMMENDED_SIZE (12 * 1024) +/* Recommended buffer size for vb2api_get_pcr_digest */ +#define VB2_PCR_DIGEST_RECOMMENDED_SIZE 32 + /* Flags for vb2_context. * * Unless otherwise noted, flags are set by verified boot and may be read (but @@ -160,6 +163,15 @@ enum vb2_resource_index { VB2_RES_FW_VBLOCK, }; +/* Digest ID for vbapi_get_pcr_digest() */ +enum vb2_pcr_digest { + /* Digest based on current developer and recovery mode flags */ + BOOT_MODE_PCR, + + /* SHA-256 hash digest of HWID, from GBB */ + HWID_DIGEST_PCR, +}; + /****************************************************************************** * APIs provided by verified boot. * @@ -338,6 +350,22 @@ int vb2api_extend_hash(struct vb2_context *ctx, */ int vb2api_check_hash(struct vb2_context *ctx); +/** + * Get a PCR digest + * + * @param ctx Vboot context + * @param which_digest PCR index of the digest + * @param dest Destination where the digest is copied. + * Recommended size is VB2_PCR_DIGEST_RECOMMENDED_SIZE. + * @param dest_size IN: size of the buffer pointed by dest + * OUT: size of the copied digest + * @return VB2_SUCCESS, or error code on error + */ +int vb2api_get_pcr_digest(struct vb2_context *ctx, + enum vb2_pcr_digest which_digest, + uint8_t *dest, + uint32_t *dest_size); + /*****************************************************************************/ /* APIs provided by the caller to verified boot */ |