HP Compaq 8000 Elite BIOS hidden settings

I happened to run dmidecode on it and noticed L1 cache is disabled, there is no visible option in BIOS to enable it. I wonder if there are hidden options which could be used to enable L1 cache. Or maybe flash in similar BIOS which has this option. I don't have to use their utility, flashrom will flash in anything. Or maybe Coreboot? Need to investigate ...

All thoughts and hints are welcome!