In this blog post I compare the output produced by the CHIPSEC 1.8.1 chipsec_util uefi nvram command to that produced by the UEFI shell dmpstore utility and discover a small number of interesting differences.
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In this post, I provide the source code for a UEFI shell utility to print out all the Platform Configuration Registers (PCRs) for a TPM 1.2 (Trusted Platform Module, version 1.2) and briefly discuss SRTM versus DRTM. This post describes the role of the BCD store in booting Windows 10 on a UEFI-based platform. It describes a number of other files used in the boot process and a workaround for booting your system from the UEFI shell should you encounter the 0xc0000034 error code. This is the first in a series of posts which demonstrate how to access, use and modify TPM 1.2 and TPM 2.0 resources via a series of UEFI shell applications. In the post, I present a small UEFI utility for examining TrEE Capabilities from the UEFI shell. TrEE is an EFI protocol which supports a subset of the TCG TPM 2.0 library specification. |
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