Bartlett Lake S

Overview

Bartlett Lake processor is a 64-bit multi-core processor built on Intel 7 process Technology. Bartlett Lake is based on a Hybrid architecture, utilizing P-cores for performance and E-Cores for efficiency.

The S-Processor line is a 2-Chip Platform that includes the Processor Die and Platform Controller Hub (PCH-S) Die in the Package.

For more information about Raptor Lake Processor lines, P-cores, and E-cores please refer to BTL.

This board configuration enables kernel support for the Bartlett Lake S boards.

Hardware

General information about the board can be found at the BTL website.

Connections and IOs

Refer to the BTL website for more information.

Programming and Debugging

Use the following procedures for booting an image for an Bartlett Lake S CRB board.

Build Zephyr application 

Build a Zephyr application; for instance, to build the hello_world application for Bartlett Lake S CRB:
```
# From the root of the zephyr repository
west build -b intel_btl_s_crb samples/hello_world
```
Note

A Zephyr EFI image file named zephyr.efi is automatically created in the build directory after the application is built.

Preparing the Boot Device

Prepare a USB flash drive to boot the Zephyr application image on a board.

Format the USB flash drive as FAT32.

On Windows, open File Explorer, and right-click on the USB flash drive. Select Format.... Make sure in File System, FAT32 is selected. Click on the Format button and wait for it to finish.

On Linux, graphical utilities such as gparted can be used to format the USB flash drive as FAT32. Alternatively, under terminal, find out the corresponding device node for the USB flash drive (for example, /dev/sdd). Execute the following command:
```
$ mkfs.vfat -F 32 <device-node>
```
Important

Make sure the device node is the actual device node for the USB flash drive. Or else you may erase other storage devices on your system, and will render the system unusable afterwards.
Copy the Zephyr EFI image file zephyr/zephyr.efi to the USB drive.

Booting Zephyr on a board

Boot the board to the EFI shell with USB flash drive connected.

Insert the prepared boot device (USB flash drive) into the board.
Connect the board to the host system using the serial cable and configure your host system to watch for serial data. See board’s website for more information.

Note

Use a baud rate of 115200.
Power on the board.
When the following output appears, press F7:
```
Press <DEL> or <ESC> to enter setup.
```
From the menu that appears, select the menu entry that describes that particular EFI shell.
From the EFI shell select Zephyr EFI image to boot.
```
Shell> fs0:zephyr.efi
```
When the boot process completes, you have finished booting the Zephyr application image.