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Make cbmem work and print TCPA log #197

Merged
merged 7 commits into from
Jun 24, 2022
Merged

Make cbmem work and print TCPA log #197

merged 7 commits into from
Jun 24, 2022

Commits on Jun 22, 2022

  1. soc/power9/chip.c: exclude reserved ranges from system RAM 

    This way this memory will be available for mapping via /dev/mem even
when kernel is configured with CONFIG_[IO_]STRICT_DEVMEM.  This makes
CBMEM available in host via cbmem tool.

Change-Id: I968067ebb8dfcf816fe72ea9c00985d0d10f5fbb
Signed-off-by: Sergii Dmytruk <[email protected]>
    @SergiiDmytruk
    SergiiDmytruk committed Jun 22, 2022
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  2. lib/coreboot_table.c: export LB_TAG_TCPA_SPEC_LOG as a range 

    The range needs to be filled in log-tpm.c, so it's available in
write_tables().

CBMEM_ID_TCPA_LOG_REF was added to avoid the necessity of code outside
of log-tpm.c to know about the layout.

Change-Id: I1deae6ce00d1d7a96c02358b387592c41a8ac5f8
Signed-off-by: Sergii Dmytruk <[email protected]>
    @SergiiDmytruk
    SergiiDmytruk committed Jun 22, 2022
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  3. soc/power9/chip.c: export TCPA log only for skiboot 

    Aligning use of the log for skiboot, cbmem and Linux drivers is pain in
the ass not just in terms of access to reserved memory but even in terms
of endianness.

Just pass log to skiboot, which is enough for printing it via `cbmem`
because Linux doesn't change it and
`/sys/kernel/security/tpm0/binary_bios_measurements` is not needed.

Change-Id: I4014d4944e876d34e6a392b9ce7104d0ad57b6f9
Signed-off-by: Sergii Dmytruk <[email protected]>
    @SergiiDmytruk
    SergiiDmytruk committed Jun 22, 2022
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  4. util/cbmem/: use /proc/device-tree on PowerPC 

    Change-Id: I1cd89d720ba79e44b033fe5b1ee6a21bfa3584b3
Signed-off-by: Igor Bagnucki <[email protected]>
Signed-off-by: Sergii Dmytruk <[email protected]>
    @SergiiDmytruk
    SergiiDmytruk committed Jun 22, 2022
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Commits on Jun 24, 2022

  1. util/cbmem/: perform endianness conversion if it doesn't match 

    Detected via header_bytes field of table header.

Change-Id: I6c5c15c4590a45cbcbf4c6fd11fac936a5412430
Signed-off-by: Igor Bagnucki <[email protected]>
Signed-off-by: Sergii Dmytruk <[email protected]>
    @SergiiDmytruk
    SergiiDmytruk committed Jun 24, 2022
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  2. util/cbmem/: support parsing TCPA log in TPM1.2 and TPM2 formats 

    Change-Id: I113e1b4fd5932c28075930d318b8938ab10d75c4
Signed-off-by: Michał Żygowski <[email protected]>
Signed-off-by: Krystian Hebel <[email protected]>
Signed-off-by: Sergii Dmytruk <[email protected]>
    @SergiiDmytruk
    SergiiDmytruk committed Jun 24, 2022
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  3. payloads/external/skiboot: switch to Dasharo's fork 

    Change-Id: I77df37c63b250d153f4297135bbff4333aa36696
Signed-off-by: Sergii Dmytruk <[email protected]>
    @SergiiDmytruk
    SergiiDmytruk committed Jun 24, 2022
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