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. > > YH Roman -- coreboot mailing list [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
