With the last patch from Nick Barker, after booting I only see on the serial console:
LinuxBIOS-1.1.8.0Fallback Sat Oct 29 13:55:37 CEST 2005 starting... Enabling mainboard devices
I have solved this issue by changing enable_mainboard_devices function in src/mainboard/via/epia-m/auto.c . I have modified the 2th pci_write_config line from : pci_write_config8(dev, 0x51, 0x10); to pci_write_config8(dev, 0x51, 0x1f);
With this modification, the epia-m system is booting and I can use it.
Regards