This page describes how to run coreboot on the Libretrend LT1000 (aka Librebox).
To build a minimal working coreboot image some blobs are required (assuming only the BIOS region is being modified).
+-----------------+---------------------------------+---------------------+ | Binary file | Apply | Required / Optional | +=================+=================================+=====================+ | FSP-M, FSP-S | Intel Firmware Support Package | Required | +-----------------+---------------------------------+---------------------+ | microcode | CPU microcode | Required | +-----------------+---------------------------------+---------------------+
FSP-M and FSP-S are obtained after splitting the Kaby Lake FSP binary (done automatically by coreboot build system and included into the image) from the 3rdparty/fsp submodule.
Microcode updates are automatically included into the coreboot image by build system from the 3rdparty/intel-microcode submodule.
The mainboard code also contains a VBT file (version 1.00, BDB version 2.09) which is automatically included into the image by coreboot build system.
The main SPI flash can be accessed using flashrom. It is strongly advised to flash only the BIOS region if not having an external programmer, see known issues.
The system has an internal flash chip which is a 8 MiB soldered SOIC-8 chip. This chip is located on the top middle side of the board near the CPU fan, between the DIMM slots and the M.2 disk. Use a clip (or solder the wires) to program the chip. Specifically, it's a Winbond W25Q64FV (3.3V) - datasheet.
Not all mainboard's peripherals and functions were tested because of lack of the cables or not being populated on the board case.
The platform contains an LR-i7S65T1 baseboard (LR-i7S65T2 with two NICs not sold yet). More details on baseboard site. Unfortunately the board manual is not publicly available.
+------------------+--------------------------------------------------+ | CPU | Intel Core i7-6500U | +------------------+--------------------------------------------------+ | PCH | Skylake-U Premium | +------------------+--------------------------------------------------+ | Super I/O | ITE IT8786E | +------------------+--------------------------------------------------+ | Coprocessor | Intel Management Engine | +------------------+--------------------------------------------------+