On Wed, 2011-10-19 at 20:25 -0400, Kevin O'Connor wrote: > 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?
I thought that, apart from the entry points and some special cases, SeaBIOS mostly ran in 32-bit mode. Have I just misunderstood? > 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 > -- Ian Campbell Q: Why do the police always travel in threes? A: One to do the reading, one to do the writing, and the other keeps an eye on the two intellectuals. _______________________________________________ SeaBIOS mailing list [email protected] http://www.seabios.org/mailman/listinfo/seabios
