From owner-freebsd-hardware Sat May 9 02:34:02 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id CAA20219 for freebsd-hardware-outgoing; Sat, 9 May 1998 02:34:02 -0700 (PDT) (envelope-from owner-freebsd-hardware@FreeBSD.ORG) Received: from itw.itworks.com.au (root@itw.itworks.com.au [203.32.61.6]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id CAA20194 for ; Sat, 9 May 1998 02:33:52 -0700 (PDT) (envelope-from gavin@itworks.com.au) Received: from localhost (gavin@localhost) by itw.itworks.com.au (8.8.8/8.8.5) with SMTP id TAA20068 for ; Sat, 9 May 1998 19:30:50 +1000 (EST) Date: Sat, 9 May 1998 19:30:49 +1000 (EST) From: Gavin Cameron To: freebsd-hardware@FreeBSD.ORG Subject: Serial port problems Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Hi, I've just acquired 2 servers to run 2.2.6-RELEASE on. They are both using Iwill P55XUB motherboards. The book that came with the motherboard says that the onboard serial ports are NS16C550 compatible. The first serial port is setup as 3F8 and IRQ 4, and the second port is at 2F8 and IRQ3. Both machines will eventually have a serial console on them. If I boot the machine up using the video card as the console the kernel cannot find the serial ports. If I boot up using a serial console I get the boot messages coming through loud and clear (so the serial port was probed and is working), but the kernel panic as soon as is probes for the serial ports. The last message before the cu session closed is Probing for devices ocu: Got hangup signal which is the probing of the ISA bus message. If I cu again and enter cont into ddb I get Fatal trap 12: page fault while in kernel mode fault virtual address = 0x4 fault code = supervisor read, page not present instruction pointer = 0x8:0xf01c37ee stack pointer = 0x10:0xefbfff80 frame pointer = 0x10:0xefbfff80 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 0 () interrupt mask = kernel: type 12 trap, code=0 Stopped at _cninit_finish+0x26: movl 0x4(%edx),%eax I've got the serial connection open and waiting in the debugger. If someone has an idea of where I should be looking to solve the problem, please email me. Thanks Gavin []------------------------------------+-------------------------------------[] | Gavin Cameron | ITworks Consulting | | Ph : 0418 390350 | Suite 100, 85 Grattan Street | | Fax : +61 3 9347 6544 | Carlton, Victoria | | Email : gavin@itworks.com.au | Australia, 3053 | []------------------------------------+-------------------------------------[] To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message