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Archives

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Accessing ACPI SLIC From UEFI Shell

In this post, I discuss activation of Microsoft Windows using the SLIC mechanism, and provide source code for a UEFI shell utility that exposes all available SLIC information.

Accessing ACPI MSDM From UEFI Shell

This post discusses how to retrieve a Microsoft Windows 8 or later product key from your firmware using an updated, and enhanced, UEFI Shell utility which I initially developed in 2014.

Using PCI.IDS Database to Show PCI Vendor and Device Information in UEFI Shell

In this post, I describe a UEFI shell utility that I developed that displays PCI information including vendor and device descriptions from the PCI.IDS database.

Using the EFI_SHELL_PROTOCOL To Read a File

In this post, I provide the source code for a working UEFI shell application which displays the contents of an ASCII file using functionality provided by EFI_SHELL_PROTOCOL.

UEFI Utility to Read TPM 2.0 PCRs

In this post, I discuss a number of key TPM 2.0 features such as multiple algorithm support and PCR banks, and provide the source code for a UEFI shell utility to display the digests from the first 24 PCRs of a TPM 2.0 implementation.