On Mon, Oct 25, 2010 at 11:14 PM, Scott Duplichan <sc...@notabs.org> wrote: > -----Original Message----- > From: coreboot-boun...@coreboot.org [mailto:coreboot-boun...@coreboot.org] On > Behalf Of Peter Stuge > Sent: Tuesday, October 26, 2010 12:03 AM > To: coreboot@coreboot.org > Subject: Re: [coreboot] HT3 for AMD boards > > ]Scott Duplichan wrote: > ]> Here is my proposal. If it seems OK, I will submit a patch. > ]> > ]> 1) Add an option for HT_MANUAL_SWAP_LIST to amdfam10/kconfig and > ]> amdk8/kconfig. The default is zero, which means it has no effect > ]> unless overridden. > ]> 2) Modify ht_wrapper.c to use HT_MANUAL_SWAP_LIST as the swap list, > ]> if non-zero. > ]> 3) In mainboard/amd/mahogany_fam10/Kconfig, override HT_MANUAL_SWAP_LIST > ]> with the value that is known to allow HT3 to work. > ] > ]I think it would be nice if the Kconfig option is slightly > ]higher-level than containing the actual values. Would it be at all > ]possible to e.g. determine some distinct swap lists that boards can > ]choose from? > ] > ]//Peter > > Hello Peter, > > The problem is that the only real hardware I have for testing is an > RS780/SB700 board. Here is the kconfig addition I have for it, as it > stands now: > > # ----------------overrides-------------------- > > # With this BUID swap list override, an AMD RS780/SB700/fam10h system can > # run the southbridge HT link in HT3 mode. Without it, the link runs at 8-bit > # 200 MHz, which prevents high resolution UMA graphics modes from working. > > config HT_MANUAL_SWAP_LIST > default 0xFF00FF0100 > > > For Serengetti-Cheetah, I think it would look like: > > config HT_MANUAL_SWAP_LIST > default 0xFF060AFF06000A00 > > ... but I have no way to test it. > > Thanks, > Scott
Would it be better for the option to call a romstage.c function to set the swaplist? Marc -- http://se-eng.com -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
