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This imports tb_measure() from stb.c, but now it calls the CVC sha512
wrapper to calculate the sha512 hash of the firmware image provided.
In trustedboot.c, the tb_measure() is renamed to trustedboot_measure().
The new function, trustedboot_measure(), no longer checks if the
container payload hash calculated at boot time matches with the hash
found in the container header. A few reasons:
- If the system admin wants the container header to be
checked/validated, the secure boot jumper must be set. Otherwise,
the container header information may not be reliable.
- The container layout is expected to change over time. Skiboot
would need to maintain a parser for each container layout
change.
- Skiboot could be checking the hash against a container version that
is not supported by the Container-Verification-Code (CVC).
The tb_measure() calls are updated to trustedboot_measure() in a
subsequent patch.
Signed-off-by: Claudio Carvalho <cclaudio@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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