On 2008-02-05 11:45, yhlu wrote:
On Feb 5, 2008 7:48 AM, Roman Kononov kononov@dls.net wrote:
On 2008-02-05 00:48 yhlu said the following:
On Feb 4, 2008 9:29 PM, Roman Kononov kononov@dls.net 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:
- 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