[SeaBIOS] Adapt SeaBIOS USB to my own OS

[Kevin O'Connor]

On Tue, Aug 06, 2013 at 10:09:32PM +0200, dunedain1990 wrote:
> Hi,
> 
> I'm doing my own OS and i'm booting it from USB uhci. When it boots and it
> arrives to the system code i want reading and writing from USB.
> 
> First of all i take the usb.c, util.c, usb.h, usb_uhci.c, usb_uhci.h,
> pci.c, pci.h, pciinit.c,... and put it into my sources and i compile it but
> i need the romlayout.S that depends directly from bios's idt and not from
> the idt from my OS.
> 
> How can i do that?
> 
> Do i need to call pci_setup() or something in the initialization of my own
> OS?
> 
> Are there some documentation to know how are the files connected and what
> do the functions do?

The SeaBIOS code isn't intended to be pulled out and used in other
projects - there is a lot of code to handle BIOS quirks.  I'm not sure
why you'd want to re-use this code either - if you're working on code
that will run in 16bit mode, you might as well just call the bios for
read/writes to the disk, and if you're working on 32bit code, there
are probably better references (eg, linux, freebsd, etc.).

-Kevin