From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <005101bf87cc$cc3b26d0$1dc9a4cd@rtdsp.com> Reply-To: "Rob Grimm" From: "Rob Grimm" To: Subject: Embedded PowerPC750 problem: Kernel slow response from console Date: Mon, 6 Mar 2000 19:33:44 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Hello All, We are working on porting linux to an embedded platform based off of the PowerPC750. We are using Linux-2.2.13 configured for serial port console (there is a standard 16550 onboard). So far, the kernel appears to boot fine (with networking disabled). After we get the message about freeing kernel memory, it takes about 10 seconds for the bash# prompt to appear. Once we get to this point, it seems like the kernel runs extremely slow. When we type a letter, it takes about 10 seconds for the letter to show up on the console ouput. I believe it has something to do with the interrupt controller (which we do not have setup correctly yet). I have tried both disabling and enabling external interrupts, and get the same results. Has anyone experienced similar problems? We started off with the kernel configured for a Prep system (we later found out that our system is not much like the prep system), and went from there. How does the kernel handle the serial console input if the interrupt is disabled? It appears that the kernel is running fine, I can do an "ls" and "cd" with no problems, it just takes a long time to see any results. Thanks in advance for any help. Regards, Rob Grimm ----------------------------- Rob Grimm Real-Time Digital rgrimm@rtdsp.com 732-681-5700 x13 ----------------------------- ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/