WMI ACPI Controller Force Power Sample Project ============================================== Overview ======== A firmware update on the host controller may require in some scenarios to force power the controller since it couldn't be powered by alternative ways or to ensure it will be maintained powered on during the entire firmware update cycle. This sample code intends to provide information on how to perform this operation through the ACPI WMI framework provided by Windows*. It could be only operated with BIOS implementations that fulfil the section in the BIOS implementation reference guide that covers the ACPI requirements. Two separate samples can be used separately: * The first file is based on a simple VBScript and can be easily run directly from an elevated command prompt. * The second is Microsoft* C# project that can be used in an application. Prerequisites ============== * The Thunderbolt software or alternatively the USB3.1 firmware update support package must be installed on the operating system * Supported operating systems: - Windows* 7 32-bit - Windows* 7 64-bit - Windows* 8.1 64-bit - Windows* 10 64-bit * Supported Thunderbolt controllers: - L5000 Series and higher Files ===== * wmibios.dll Sample Dynamic Library Link (DLL) to be loaded by the Windows* WMI ACPI driver service at startup, which defines the WMI ACPI interface that accesses the force power interface in BIOS. This DLL was built using the WMIBIOS project present in this directory and is based on the WMI ACPI Microsoft* sample in Windows* WDK (https://msdn.microsoft.com/en-us/library/windows/hardware/ff554118(v=vs.85).aspx#windows_management_instrumentation__wmi_). * wmibios.reg Sample registry file with the path to the wmibios.dll which is added into the WMI ACPI driver service registry section. This is used by the WMI ACPI Windows* driver service to load the BIOS ACPI definitions at start up. * VBScript/ControllerForcePower.vbs VBScript sample file * CSharp/ControllerForcePower.sln C# sample project * WMIBIOS/WMIBios.sln Sample code based on the WMI ACPI Microsoft* sample in Windows* WDK, which builds the wmibios.dll sample. (https://msdn.microsoft.com/en-us/library/windows/hardware/ff554118(v=vs.85).aspx#windows_management_instrumentation__wmi_) Installation steps ================== 1. Install the Thunderbolt software or alternatively USB3.1 firmware update support package 2. Copy wmibios.dll into C:\ForcePower (Note: this file and its location are provided as sample, may require to be adapted on your system) 3. Install wmibios.reg (Note: this file is provided as sample, may require to be adapted on your system) 4. A restart of the machine MUST be performed and absolutely necessary to have force power capabilities. Execution steps =============== VBScript sample: * Open an elevated command prompt (admin) * Run VBScript/ControllerForcePower.vbs from the command prompt with 1 as argument to set force power or 0 to unset it - e.g. VBScript/ControllerForcePower.vbs 1 CSharp sample: * Open an CSharp/ControllerForcePower.sln with Visual Studio 2013 * Build the solution through Visual Studio. * Run ControllerForcePower.exe in Admin mode with 1 as command line parameter to set ] force power or 0 to unset it. Important notes =============== The force power operations can take up to a few seconds (typical time up to 10 seconds). Make sure you're not running other operations (such as firmware update) until the controller is properly powered on. Depending on your system policy, you may want to unset force power on the controller after you finish your operations to avoid keeping the controller powered on. The force power through the WMI ACPI is not persistent over a restart/power off of the system. Legal Information ================= Thunderbolt is a trademark of Intel Corporation in the U.S. and/or other countries. Microsoft, Windows, and the Windows logo are trademarks, or registered trademarks of Microsoft Corporation in the U.S. and/or other countries. * Other names and brands may be claimed as the property of others. Copyright(C) 2015-2016 Intel Corporation. All rights reserved.Download Driver Pack
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