Documentation: Warn about ME cleaner on Sandy Bridge
Document known issues with 'disabled' ME. Change-Id: I364f3ed49341523c781eb2f3b41e866f33632a7e Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/32889 Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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@ -6,3 +6,4 @@ This section contains documentation about coreboot on specific Intel "Sandy Brid
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- [Native Ram Initialization](nri.md)
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- [RAM initialization feature matrix](nri_features.md)
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- [ME Cleaner](me_cleaner.md)
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@ -0,0 +1,20 @@
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# ME Cleaner
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It's possible to 'clean' the ME partition within the flash medium as part
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of the build process. While cleaning as much code as possible is removed
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from the ME firmware partition. In this state the ME errors out and doesn't
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operate any more.
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**Using a 'cleaned' ME partition may lead to issues and its use should be
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carefully evaulated.**
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## Observations with 'cleaned' ME
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* Instable LPC bus
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* SuperIO is malfunctioning
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* TPM is malfunctioning
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* Random system shutdowns on high bus activity
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## Filing bug reports
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Always test with unmodified IFD and ME section before reporting bugs to the
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coreboot project.
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