On Wed, Oct 19, 2011 at 04:08:06PM +0900, Daniel Castro wrote: > Hello, > > I am trying to add a process_op in block.c for Xen, yet the linker > throws an error for out rom16, yet my code will only run in 32Bit > FLAT. > The specific error is undefined referece to process_xen_op (my > function defined elsewhere) Here is the make output:
The disk access code is called from 16bit mode, and thus it needs to be compiled in 16bit mode. The link errors you are seeing are there to force a build error (instead of failing mysterously at run time). What does your driver do that requires 32bit mode? The ahci driver has to access some memory addresses above 1 meg to work properly and so it uses the pci_readl/writel() functions which trampoline to/from 32bit mode to acomplish this. If you need to do something similar, you could use that as a model. -Kevin _______________________________________________ SeaBIOS mailing list [email protected] http://www.seabios.org/mailman/listinfo/seabios
