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[Design] how to identify the request between BIOS and OOB user #26

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nicklela opened this issue May 30, 2023 · 2 comments
Open

[Design] how to identify the request between BIOS and OOB user #26

nicklela opened this issue May 30, 2023 · 2 comments
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@nicklela
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Idea:
Bootstrap credential + ComputerSystem.BootProgress

  • only host FW can get bootstrap credential. credential is generated on each request and it gets deleted on system reset.
  • OS or option rom can also get bootstrap credential. So, BMC can identify it is BIOS by checking the boot progress code. (OpenBMC has boot progress code implemented)
  • Boot progress support is a requirement from ARM SBMR specification:
    image
@nicklela nicklela self-assigned this May 30, 2023
@nicklela nicklela added the question Further information is requested label May 30, 2023
@nicklela
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Two ideas

  • bootstrap credential is only used by BIOS not OS. OS should have their own way to get credential.
    vs.
  • OS can also use bootstrap credential to communicate with BMC

image

@nicklela
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There is a grey area so we like to send email to author of bootstrap credential. (Jeff Bobzin)

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