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Jonathan Neuschäfer edited this page Dec 24, 2020 · 46 revisions

The Nuvoton WPCM450, codenamed Hermon is a BMC which was used in server mainboards from multiple vendors. It is closely related to the earlier Winbond W90 and Nuvoton NUC900 chip families, and to the later Nuvoton NPCM7xx BMCs.

Features

The following table summarizes the state of software support for various SoC features.

  • ATEN, AMI, and DELL indicate that the respective vendor kernel contains a driver
  • blob means that one of the vendors shipped a driver in binary form
  • 5.x patch means that I have a patch for modern Linux, adding driver and/or devicetree tree support
  • mainline means that the feature is supported on mainline drivers and devicetrees for WPCM450
Feature ATEN AMI DELL blob 5.x patch mainline comments
CPU: ARM926EJ-S ✓ ✓ ✓ ✓ very common CPU
Interrupt controller ✓ ✓ ✓ ✓
Timer ✓ ✓ ✓ ✓ same as in NPCM750
Watchdog ✓ ✓ same as in NPCM750
UART ✓ ✓ ✓ ✓ same as in NPCM750
Clock tree Configured in bootloader
SPI/FIU ✓ ✓ ✓ TODO: check NPCM750
BIOS flash access ✓
Ethernet ✓ ✓ ✓ OpenBMC has driver for NPCM750
Ethernet NC/SI ✓ ✓
I2C ✓ ✓
PWM ✓ ✓
USB ✓ ✓
PECI ✓ ✓
GPIO ✓ ✓
Fan tachometer ✓ ✓
ADC ✓ ✓

References

Overview:

Basics:

Peripherals:

Board specifics:

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