[coreboot] Via VT82C686 (A/B) southbridge
Jacek Chruscik
mercury at wirebros.com
Sun Mar 23 04:43:58 CET 2008
Hi,
Does anybody know how to deal with this southbridge: VIA VT82c686
I'm trying to port coreboot v.2 for FIC FR33E motherboard, but this
southbridge has the superio built in.
I don't have any datasheet for this chip.
coreboot-v2 has no option for such superio, and all I need to do is to
initialize serial port.
As a base I used via-epia code. The north is vt8601.
So far I generated PIRQ table, modified auto.c to recognize correct
southbridge, modified config.lb to initialize devices.
There is serial init function in vt82c686 source:
static void vt82c686_enable_serial(device_t dev, unsigned iobase)
.....
but it requires 2 parameters, which I don't have (called as early
serial init from auto.c):
static void main(unsigned long bist)
{
unsigned long x;
if (bist == 0) {
early_mtrr_init();
}
enable_vt8231_serial(); //now it is called as: vt82c686_enable_serial
uart_init();
console_init();
.......
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