[ROM] Only inspect RT FW's SVN during image validation. #1802
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bluegate010
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jhand2
previously approved these changes
Nov 20, 2024
mhatrevi
reviewed
Nov 21, 2024
mhatrevi
previously approved these changes
Nov 21, 2024
This is done as part of Stable Identity, which requires Caliptra to have a single SVN. As part of this work, FMC's SVN is being deprecated. Instead, the runtime SVN now describes the security state of the entire firmware image. This is safe because the FMC and runtime images are always signed, validated, and updated in tandem. Future changes will update build tooling to prevent callers from setting FMC's SVN.
mhatrevi
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Nov 21, 2024
jhand2
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This is done as part of Stable Identity, which requires Caliptra to have a single SVN. As part of this work, FMC's SVN is being deprecated. Instead, the runtime SVN now describes the security state of the entire firmware image. This is safe because the FMC and runtime images are always signed, validated, and updated in tandem.
Future changes will update build tooling to prevent callers from setting FMC's SVN.