On Thu, Feb 21, 2008 at 2:39 AM, <[EMAIL PROTECTED]> wrote: > Sweet:-) > With Stefan's great tool I think I found my ethernet enable GPIO!! > I run it with the original bios (ethernet enabled) and then with the > original bios (ethernet disabled). The only difference is in the 0x0C > register looks like GPIO 23 is drivin to high (asserted), enabling the > LAN Controller. This would have taken me forever to trace it manually > without any schematics. For fun I ran it with the coreboot and yup the > 0x0C register looks just like the original bios with ethernet > disabled. There are alot of other differences with the coreboot one, > should I be worried about those (one of them could have to do with my > flashrom issues??)? > > Anyways, the question now is how can I assert GPIO 23 before the pci > bus scan so coreboot will recognize my ethernet device?? Anyone??
Rather simple. Some time pre-ram init, set up the GPIO base, then use inb()/outb() to modify the contents of the GPIO register you need to change. -Corey
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