BOOT PROCESS - XEON D-1559

[AjithKumarA]

Hi Intel Team,

I want to learn about Intel Xeon D-1559 Boot process. From reset the processor what was happening inside the chip. Please provide technical document to learn.How to start learn and how to understand the basics of the processors.

Thanks in advance,

A. Ajith Kumar

[Dineshbabu]

Hello Ajith,

Greetings for the day!

This is regarding the case you have with us with the following details.

Case No. 05994037

Product: 2nd Generation Intel® Xeon® Scalable Processors

Issue: BOOT PROCESS - XEON D-1559

Thank you for contacting us. At the moment, we are actively working towards finding an appropriate resolution for your issue, and we will provide you with an update as soon as we can. We kindly request your cooperation during this time.

Please don’t hesitate to contact us for any further assistance.

Thank you for using Intel products and services.

Best Regards,

Dineshbabu

Intel Customer Support.

[Dineshbabu]

Hello AjithKumarA,

Greetings for the day!

This is regarding the case you have with us with the following details.

Case No. 05994037

Product: 2nd Generation Intel® Xeon® Scalable Processors

Issue: BOOT PROCESS - XEON D-1559

Please note that we have a similar case regarding your concern, and one of our agents has already provided a response in the following community response link for your reference:

https://community.intel.com/t5/Processors/BOOT-PROCESS-INTEL-XEON-D-1559-PROCESSOR/m-p/1528812#M65595

Certainly, here's a rephrased version of the process for a general processor boot:

• When you power on a server, the first thing that happens is the Power-On Self-Test. This is a series of diagnostic tests performed by the server's firmware (typically the BIOS or UEFI) to check the integrity of various hardware components, including the CPU, memory (RAM), storage devices, and other peripherals.

• The CPU plays a crucial role in this phase by executing the initial code of the firmware, which then runs the POST routines.

• After a successful POST, the server's firmware determines the boot device. This can be a hard drive, SSD, network interface (PXE boot), or other storage media.

• The bootloader is a small program responsible for loading the server's operating system. The most commonly used bootloaders for servers are GRUB (for Linux-based systems) or the Windows Boot Manager (for Windows-based systems).The CPU executes the bootloader code, and the bootloader loads the kernel and essential system files into memory.

• Once the bootloader has loaded the kernel into memory, the CPU begins executing the kernel code. The kernel initializes various system components, including the CPU itself. It configures the CPU, sets up memory management, and starts essential kernel threads.

• After the kernel is up and running, it starts the user-space initialization process. This includes launching system services, daemons, and other user applications. The CPU continues to execute user-level processes as they are started by the operating system.

• Once the user-space initialization is complete, the server is ready to serve requests and run applications.

Best regards,

Dineshbabu

Intel Customer Support.