Alder Lake-S RVP Board

Note

12th Generation Intel® Core™ Processor, formally known as Alder Lake S family.

Supported Boards

SBL supports ADL DDR4 and DDR5 platforms.

Building

To build SBL for Alder Lake S platform:

python BuildLoader.py build adls

The output images are generated under Outputs directory.

Stitching

Note

Intel® FSP images are not available to the public yet. Please contact your Intel representative for details.

  1. Gather Alder Lake S IFWI firmware image
Users can either download the full IFWI image if the IFWI image release is available or read the existing IFWI image on the board using SPI programmer. This image contains additional firmware ingredients that are required boot on Alder Lake S.

Note

StitchLoader.py currently does not support stitching with boot guard feature enabled. To stitch with Boot Guard enabled, please use StitchIfwi.py.

  1. Stitch SBL images into downloaded BIOS image:

    python Platform/AlderlakeBoardPkg/Script/StitchLoader.py -i <BIOS_IMAGE_NAME> -s Outputs/adls/SlimBootloader.bin -o <SBL_IFWI_IMAGE_NAME>
where -i = Input file, -o = Output file.

For example, stitching SBL IFWI image sbl_adls_ifwi.bin from Alder Lake S firmware images downloaded:

python Platform/AlderlakeBoardPkg/Script/StitchLoader.py -i xxxx.bin -s Outputs/adls/SlimBootloader.bin -o sbl_adls_ifwi.bin

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

Flashing

Flash the generated sbl_adls_ifwi.bin to the target board using DediProg SF100 or SF600 programmer.

Note

Please refer to the table below to identify the connector on the target board is for flash programmer. When using such device, please ensure:

  1. The alignment/polarity when connecting Dediprog to the board.
  2. The power to the board is turned off while the programmer is connected (even when not in use).
  3. The programmer is set to update the flash from offset 0x0.

Board ID Assignments

Each ADL-S RVP board is assigned with a unique platform ID

Board Platform ID SPI Programmer UART
ADL-S DDR4 0x0017 J8G2 U6J1
ADL-S DDR5 0x001B J8G2 U6J1

Debug UART

For Alder Lake S, serial port connector location can be found from the above table for each supported target board.

Note

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

Capsule image for Alder Lake S

The Slimbootloader.bin image generated from the build steps above can be used to create a capsule image. Please refer to Build Tool on generating SBL image.

For Alder Lake S platform, the below command can be used:

python ./BootloaderCorePkg/Tools/GenCapsuleFirmware.py -p BIOS Outputs/adl/SlimBootloader.bin -k <Keys> -o FwuImage.bin

For more details on generating capsule image, please refer Generating capsule.

Triggering Firmware Update

SBL for Alder Lake S 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 Firmware Update on how to trigger firmware update flow. Below is an example:

To trigger firmware update in SBL shell:

  1. Copy FwuImage.bin into root directory on FAT partition of a USB key

  2. Boot and press any key to enter SBL shell

  3. Type command fwupdate from shell

    SBL will reset the platform and initiate firmware update flow. The platform will reset multiple times to complete the update process.

    A sample boot messages from console:

    Shell> fwupdate
...
============= Intel Slim Bootloader STAGE1A =============
...
============= Intel Slim Bootloader STAGE1B =============
...
BOOT: BP0
MODE: 18
...
============= Intel Slim Bootloader STAGE2 =============
...
Jump to payload
...
Starting Firmware Update
...
=================Read Capsule Image==============
...
................
Finished     1%
...
Finished    99%
...
...

Reset required to proceed with the firmware update.

============= Intel Slim Bootloader STAGE1A =============
...
============= Intel Slim Bootloader STAGE1B =============
...
BOOT: BP1
MODE: 18
...
============= Intel Slim Bootloader STAGE2 =============
...
=================Read Capsule Image==============
...
................
Finished     1%
...
Finished    99%
Updating 0x002B1000, Size:0x0A000
...............
Finished   100%
Set next FWU state: 0x7C
Firmware Update status updated to reserved region
Set next FWU state: 0x77
Reset required to proceed with the firmware update.
...
==================== OS Loader ====================

Starting Kernel ...

Booting Yocto Linux

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.

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.