Wildcat Lake Platforms

Note

Intel® Core™ Series 3 Processor, formally known as Wildcat Lake family.

Supported Boards

SBL supports various platforms corresponding to Wildcat Lake.

Each Wildcat Lake board is assigned with a unique platform ID.

Board	Platform ID	SPI Programmer	UART	PLAT
Wildcat Lake DDR5 RVP	0x0008	J4J1	J9H1	wcl
Wildcat Lake DDR5 CRB	0x0006	J1E2	J6K1	wcl
Wildcat Lake LPDDR5	0x0007	J4J1	J9H1	wcl

Debug UART

For Wildcat Lake platforms, 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.

Building

To build SBL for any Wildcat Lake platform:

python BuildLoader.py build <PLAT>

<PLAT> = wcl

Note: The output images are generated under Outputs directory.

Stitching

1. Gather Wildcat Lake 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 Wildcat Lake.

Note

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

2. Stitch SBL images into downloaded BIOS image:

   python Platform/WildcatlakeBoardPkg/Script/StitchLoader.py -i <BIOS_IMAGE_NAME> -s Outputs/<plat>/SlimBootloader.bin -o <SBL_IFWI_IMAGE_NAME>
   

where -i = Input file, -o = Output file, plat = wcl

For example, to stitch SBL IFWI image sbl_wcl_ifwi.bin from Wildcat Lake downloaded firmware images:

python Platform/WildcatlakeBoardPkg/Script/StitchLoader.py -i xxxx.bin -s Outputs/wcl/SlimBootloader.bin -o sbl_wcl_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_wcl_ifwi.bin to the target board using a DediProg SF100 or SF600 programmer.

Note

Refer the table above to identify the connector on the target board for SPI 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.

Capsule image for Wildcat Lake

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 all Wildcat Lake platforms, the below command can be used:

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

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

Triggering Firmware Update

SBL for Wildcat Lake 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 Ubuntu

See Boot Ubuntu for more details.

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