> On 2008-02-05 11:45, yhlu wrote: > > On Feb 5, 2008 7:48 AM, Roman Kononov <[EMAIL PROTECTED]> wrote: > >> On 2008-02-05 00:48 yhlu said the following: > >> > >>> On Feb 4, 2008 9:29 PM, Roman Kononov <[EMAIL PROTECTED]> wrote: > >>>> I have difficulty cold-resetting Tyan s2912, which has mcp55. > >>>> > >>>> The sequence > >>>> outb(0x2,0xcf9); > >>>> outb(0x6,0xcf9); > >>>> is a warm reset. It does not reset the HyperTransport link frequency > and width. > >>> how do you know? > >>> > >>> do you have other co-processor or htx installed? > >> I have a co-processor. > >> > >> The sequence I hope to have: > >> > >> 1) Power up. Power-on reset. The co-processor takes long time to become > >> alive (~500s). By this time the CPU thinks that the HT link is dead. > >> 2) CPU issues another reset. > >> 3) The CPU re-initializes the HT link and the connection is happy. > >> > >> With the above sequence, the step 3) is a warm reset, and the CPU does > >> not attempt to re-initialize the link. > > > > that is co-processor problem. > > > > Please talk the co-processor vendor about that. they have solution for > > you problem. otherwise return that to get one from another vendor. > > Thanks for the recommendation. Who makes socket F co-processors? > > Can you tell me how to make the cold reset please?
Isn't there supposed to be a way to use ldtstop to reinitialize the HT link without a cold reset? It seems like I read that it is faster. Myles -- coreboot mailing list coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
