Coffee Lake Refresh CRB Board

Note

8th and 9th Generation Intel® Core ^TM Processor Families formally known as Whiskey Lake and Coffee Lake Refresh platform.

Supported Boards

SBL supports Whiskey Lake, Coffee Lake Refresh Desktop S8+2, Coffee Lake Refresh Mobile H6+2 CRB platforms and UP Xtreme platform.

Building

To build SBL for Whiskey Lake, Coffee Lake Refresh and UP Xtreme platforms:

python BuildLoader.py build cfl

The output images are generated under Outputs directory.

Stitching

1. Gather Whiskey Lake, Coffee Lake Refresh or UP Xtreme IFWI firmware image

Users can either download the full IFWI image if the IFWI image release is available, or read the exising IFWI image on the board using SPI programmer. This image contains additional firmware ingredients that are required to boot on Whiskey Lake, Coffee Lake Refresh or UP Xtreme.

Note

StitchLoader.py currently only supports stitching with boot guard feature disabled.

2. Stitch SBL images into downloaded IFWI image:

   For Whiskey Lake and Coffee Lake Refresh CRB boards:
     python Platform/CoffeelakeBoardPkg/Script/StitchLoader.py -i <BIOS_IMAGE_NAME>
            -s Outputs/cfl/SlimBootloader.bin -o <SBL_IFWI_IMAGE_NAME>
   
   For UP Xtreme board:
     python Platform/CoffeelakeBoardPkg/Script/StitchLoader.py -i <BIOS_IMAGE_NAME>
            -s Outputs/cfl/SlimBootloader.bin -o <SBL_IFWI_IMAGE_NAME> -p 0xAA00??10
     '??' can be the following values:
      02:  Use PCH UART2 (Label CN16 on board) as debug serial port
      FF:  Use SIO UART1 (Label COM1 on board) as debug serial port
      FE:  Use SIO UART2 (Label COM2 on board) as debug serial port
   
   where -i = Input file, -o = Output file.
   

For example, stitching SBL IFWI image sbl_cfl_ifwi.bin from Coffee Lake Refresh firmware image:

python Platform/CoffeelakeBoardPkg/Script/StitchLoader.py -i xxxx.bin -s Outputs/cfl/SlimBootloader.bin -o sbl_cfl_ifwi.bin

For more details on stitch tool, see Stitch Tool on how to stitch the IFWI image with SBL.

Flashing

Flash the generated IFWI image to the target board using DediProg SF100 or SF600 programmer.

Note

Please check the alignment/polarity when connecting Dediprog to the board. Please power off the board before connecting the Dediprog.

Note

Please set the dediprog to flash the ifwi binary from offset 0

SPI Header to connect dediprog is provided in the table below:

Board	Connector
Whiskey Lake	J3H1
Coffee Lake Refresh Desktop S8+2	J7H1
Coffee Lake Refresh Mobile H6+2	J7H2
UP Xtreme	CN18

Note

Please disconnect Deidprog before powering up the board again.

Slimbootloader binary for capsule

Creating slimbootloader binary for capsule image requires the following steps:

Build SBL for Whiskey Lake, Coffee Lake Refresh or UP Xtreme:

python BuildLoader.py build cfl

slimbootloader binary generated in outputs\cfl\slimbootloader.bin can be used for generating capsule image.

Triggering Firmware Update

Sample implementation of trigerring firmware update is explained below

SBL for Whiskey Lake, Coffee Lake Refresh uses BIT16 of PMC I/O register (Over-Clocking WDT Control (OC_WDT_CTL) - Offset 54h) to trigger firmware update. When BIT16 is set, SBL will set the boot mode to FLASH_UPDATE.

please refer to IsFirmwareUpdate() function called in Platform\CoffeelakeBoardPkg\Library\Stage1BBoardInitLib\Stage1BBoardInitLib.c to understand how SBL will detect firmware update mode.

Debug UART

Serial port connector on board is provided in the table below:

Board	Connector
Whiskey Lake	J8J1
Coffee Lake Refresh Desktop S8+2	J9B7
Coffee Lake Refresh Mobile H6+2	J4A1
UP Xtreme	CN16/COM1/COM2

Note

Configure host PuTTY or minicom to 115200bps, 8N1, no hardware flow control.

Booting Yocto Linux from USB

You may need to change boot options to boot from USB. See Change Boot Options.

1. Download Yocto Linux

2. Create bootable USB key. For example: In Windows, Rufus can be used. In Linux, etcher app can be used.

3. Boot the bootable OS image from USB key on the board.

Booting Ubuntu

See Boot Ubuntu for more details.

You may need to change boot options to boot from USB. See Change Boot Options.

Board ID Assignments

Each board is assigned a unique platform ID

Board	Platform ID
Whiskey Lake	0x14
Coffee Lake Refresh Desktop S8+2	0x1B
Coffee Lake Refresh Mobile H6+2	0x16
UP Xtreme	0x10

See Platform ID Detection using GPIOs for more details.

To customize board configurations in *.dlt file, make sure to specify PlatformId to the corresponding values for the board.

See Configuration Tools for more details.