Following patch makes seabios friendly to 386/486 CPUs, providing a way how to emulate the CPUID instruction and using TSC only if CPU actually supports the TSC. Otherwise it uses TSC emulation mode which is similar to what is used in Xenomai except we use timer0 here.
With this patch it is able to run on 486SX class system aka bifferboard together with coreboot.
Signed-off-by: Rudolf Marek firstname.lastname@example.org
Please let me know if you there is something you don't like in that patch.