Date: Thu, 11 Sep 2008 20:39:29 -0700 From: Marcel Moolenaar <xcllnt@mac.com> To: Garance A Drosihn <drosih@rpi.edu> Cc: freebsd-current@FreeBSD.org Subject: Re: serial console on 8.x (probably sio vs uart) Message-ID: <75BD7074-F561-42D5-A537-FFF44B612BFB@mac.com> In-Reply-To: <p06240801c4ef771564d6@[128.113.24.47]> References: <p06240801c4ef771564d6@[128.113.24.47]>
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On Sep 11, 2008, at 7:09 PM, Garance A Drosihn wrote: > After I boot up, the only /dev/tty* devices I have are ttyv0 > through ttyvf. I've installed the new /etc/ttys and a new > /boot/device.hints, though frankly device.hints has always > been a magic-box to me, so I just blindly copied what was in > GENERIC.hints and changed hint.uart.0.flags to be "0x30". uart(4) does tell you when it's the console: uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 on acpi0 uart0: [FILTER] uart0: console (115200,n,8,1) The first question is: do you see a line like the one above? If not (most likely), try to boot explicitly with a serial console (i.e. set boot_serial=yes at the loader prompt or boot with -h). > I get the impression > that the newer loader includes changes to make uart work better > wrt the speed it expects to use on the serial port. Is that a > reasonable guess? Nothing has been done to make uart(4) work. By default uart(4) keeps the baudrate that the firmware or loader uses. This may not always work, which is why you can tell uart(4) explicitly what baudrate to use. -- Marcel Moolenaar xcllnt@mac.com
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