ACK: [PATCH] tpmevlogdump: add pcr_index usage

[Alex Hung]

On 2020-07-14 12:29 a.m., Ivan Hu wrote:
> Base on "TCG PC Client Specific Platform Firmware Profile Specification"
> table 1.
> https://trustedcomputinggroup.org/resource/pc-client-specific-platform-firmware-profile-specification/
> 
> Signed-off-by: Ivan Hu <ivan.hu at canonical.com>
> ---
>  src/tpm/tpmevlogdump/tpmevlogdump.c | 60 ++++++++++++++++++++++++++++-
>  1 file changed, 58 insertions(+), 2 deletions(-)
> 
> diff --git a/src/tpm/tpmevlogdump/tpmevlogdump.c b/src/tpm/tpmevlogdump/tpmevlogdump.c
> index 998b48eb..dd5e3a5b 100644
> --- a/src/tpm/tpmevlogdump/tpmevlogdump.c
> +++ b/src/tpm/tpmevlogdump/tpmevlogdump.c
> @@ -198,6 +198,60 @@ static uint8_t tpmevlogdump_get_hash_size (TPM2_ALG_ID hash)
>  	return sz;
>  }
>  
> +static char *tpmevlogdump_pcrindex_to_string (uint32_t pcr)
> +{
> +
> +	char *str;
> +
> +	switch (pcr) {
> +	case 0:
> +		str = "SRTM, BIOS, Host Platform Extensions, Embedded Option ROMs and PI Drivers";
> +		break;
> +	case 1:
> +		str = "Host Platform Configuration";
> +		break;
> +	case 2:
> +		str = "UEFI driver and application Code";
> +		break;
> +	case 3:
> +		str = "UEFI driver and application Configuration and Data";
> +		break;
> +	case 4:
> +		str = "UEFI Boot Manager Code and Boot Attempts";
> +		break;
> +	case 5:
> +		str = "Boot Manager Code Configuration and Data and GPT/Partition Table";
> +		break;
> +	case 6:
> +		str = "Host Platform Manufacturer Specific";
> +		break;
> +	case 7:
> +		str = "Secure Boot Policy";
> +		break;
> +	case 8:
> +	case 9:
> +	case 10:
> +	case 11:
> +	case 12:
> +	case 13:
> +	case 14:
> +	case 15:
> +		str = "Defined for use by the Static OS";
> +		break;
> +	case 16:
> +		str = "Debug";
> +		break;
> +	case 23:
> +		str = "Application Support";
> +		break;
> +	default:
> +		str = "Unknown";
> +		break;
> +	}
> +
> +	return str;
> +}
> +
>  static size_t tpmevlogdump_specid_event_dump(fwts_framework *fw, uint8_t *data, size_t len)
>  {
>  
> @@ -212,7 +266,8 @@ static size_t tpmevlogdump_specid_event_dump(fwts_framework *fw, uint8_t *data,
>  		return 0;
>  	}
>  	fwts_pc_client_pcr_event *pc_event = (fwts_pc_client_pcr_event *)pdata;
> -	fwts_log_info_verbatim(fw, "PCRIndex:                    0x%8.8" PRIx32, pc_event->pcr_index);
> +	str_info = tpmevlogdump_pcrindex_to_string(pc_event->pcr_index);
> +	fwts_log_info_verbatim(fw, "PCRIndex:                    0x%8.8" PRIx32 "(%s)", pc_event->pcr_index, str_info);
>  	str_info = tpmevlogdump_evtype_to_string(pc_event->event_type);
>  	fwts_log_info_verbatim(fw, "EventType:                   0x%8.8" PRIx32 "(%s)", pc_event->event_type, str_info);
>  	tpmevlogdump_data_hexdump(fw, pc_event->digest, sizeof(pc_event->digest), "Digest");
> @@ -283,7 +338,8 @@ static size_t tpmevlogdump_event_v2_dump(fwts_framework *fw, uint8_t *data, size
>  		return 0;
>  	}
>  	fwts_tcg_pcr_event2 *pcr_event2 = (fwts_tcg_pcr_event2 *)pdata;
> -	fwts_log_info_verbatim(fw, "PCRIndex:           0x%8.8" PRIx32, pcr_event2->pcr_index);
> +	str_info = tpmevlogdump_pcrindex_to_string(pcr_event2->pcr_index);
> +	fwts_log_info_verbatim(fw, "PCRIndex:           0x%8.8" PRIx32 "(%s)", pcr_event2->pcr_index, str_info);
>  	str_info = tpmevlogdump_evtype_to_string(pcr_event2->event_type);
>  	fwts_log_info_verbatim(fw, "EventType:          0x%8.8" PRIx32 "(%s)", pcr_event2->event_type, str_info);
>  	fwts_log_info_verbatim(fw, "Digests Count :     0x%8.8" PRIx32, pcr_event2->digests_count);
> 


Acked-by: Alex Hung <alex.hung at canonical.com>