expect-post/tpm-logs.exp

#!/usr/bin/env python3
#
# Copyright (c) 2021, Linaro Limited
# Copyright (c) 2022, Arm Limited. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#

import re
import sys
from subprocess import check_call


PATTERN = "\
Digest(\\s|\\w)*:\\s(\\w{2}\\s){16}|\
 : (\\w{2}\\s){16}|\
 Event\\w*\\s*:\\s\\w+\\s"


# Extract pertinent information from TPM side.
with open(sys.argv[1]) as f, open("ftpm_event_log", "w") as out:
    for l in f:
        m = re.search(PATTERN, l)
        if m:
            print(m.group(), file=out)

# Extract pertinent information from TF side.
with open(sys.argv[1].replace("uart1", "uart0")) as f, open("tfa_event_log", "w") as out:
    # Wait for the start of the event log dump.
    for l in f:
        if re.search("TCG_EfiSpecIDEvent:", l):
            break

    for l in f:
        # Look for the end of the event log dump.
        if re.search("Booting BL31", l):
            break

        # Capture relevant lines in between start and end strings
        m = re.search(PATTERN, l)
        if m:
            print(m.group(), file=out)

# Compare it to match.
check_call("diff -s -u tfa_event_log ftpm_event_log", shell=True)