coreboot-kgpe-d16/Documentation/mainboard/kontron/mal10.md

Kontron mAL10 Computer-on-Modules platform

The Kontron mAL10 COMe is a credit card sized Computer-on-Modules platform based on the Intel Atom E3900 Series, Pentium and Celeron processors.

Technology

+------------------+----------------------------------+
| COMe Type        | mini pin-out type 10             |
+------------------+----------------------------------+
| SoC              | Intel Atom x5-E3940 (4 core)     |
+------------------+----------------------------------+
| GPU              | Intel HD Graphics 500            |
+------------------+----------------------------------+
| Coprocessor      | Intel TXE 3.0                    |
+------------------+----------------------------------+
| RAM              | 8GB DDR3L                        |
+------------------+----------------------------------+
| eMMC Flash       | 32GB eMMC pSLC                   |
+------------------+----------------------------------+
| USB3             | x2                               |
+------------------+----------------------------------+
| USB2             | x6                               |
+------------------+----------------------------------+
| SATA             | x2                               |
+------------------+----------------------------------+
| LAN              | Intel I210IT, I211AT             |
+------------------+----------------------------------+
| Super IO/EC      | Kontron CPLD/EC                  |
+------------------+----------------------------------+
| HWM              | NCT7802                          |
+------------------+----------------------------------+

Building coreboot

The following commands will build a working image:

make distclean
make defconfig KBUILD_DEFCONFIG=configs/config.kontron_mal10
make

Payloads

• SeaBIOS
• Tianocore
• Linux as payload

Flashing coreboot

The SPI flash can be accessed internally using flashrom. The following command is used to flash BIOS region.

$ flashrom -p internal --ifd -i bios -w coreboot.rom --noverify-all

Hardware Monitor

The Nuvoton NCT7802Y is a hardware monitoring IC, capable of monitor critical system parameters including power supply voltages, fan speeds, and temperatures. The remote inputs can be connected to CPU/GPU thermal diode or any thermal diode sensors and thermistor.

• 6 temperature sensors;
• 5 voltage sensors;
• 3 fan speed sensors;
• 4 sets of temperature setting points.

PECI is not supported by Apollo Lake Pentium/Celeron/Atom processors and the CPU temperature value is taken from a thermal resistor (NTC) that is placed very close to the CPU.

Known issues

• Works only with Tianocore "UEFIPayload" payload edk2-stable201903-1569-g3e63a91 Booting with the "CorebootPayload" crashes.
• Tianocore outputs video through an external GPU only.

Untested

• IGD/LVDS
• SDIO

Tested and working

• Kontron CPLD/EC (Serial ports, I2C port)
• NCT7802 [HWM](#Hardware Monitor)
• USB2/3
• Gigabit Ethernet ports
• eMMC
• SATA
• PCIe ports
• IGD/DP

TODO

• Onboard audio (codec IDT 92HD73C1X5, currently disabled)
• S3 suspend/resume