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Testing firmware is quite complex and requires both testing from the firmware itself as well as running an OS.

...

The graph below briefly tries to explain the tests that need to run under an OS (LRP) and the firmware (TrustedSubstrate)

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Testing capabilities

The diagram below explains the valid test combinations (and not what’s currently implemented)

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QEMU

DeveloperBox

stm32mp1

Rockpi4

DeveloperBox (EDK2)

xtests

✅

✅

✅

✅

❌✅

UEFI measured boot

✅

✅

❌

✅

❌✅

UEFI Secure Boot

✅

✅

✅

✅

✅

A/B updates

❌

🔄

🔄

❌

❌

PARSEC

❓

❓

❓

❓

✅

RPMB variables

❌

✅

❌

✅

❌✅

TPM

✅

✅

❌

✅

❌✅

Capsule updates

❌

✅

✅

✅

✅

SR-IR

✅

✅

🔄

✅

❌✅

SR-IR security extension

✅

✅

❌

✅

❌✅

OS installer

✅

✅

❌

✅

✅