Re: kernel ignores kenv comconsole_speed?
On 10/25/06, Stefan Bethke [EMAIL PROTECTED] wrote: Am 25.10.2006 um 10:57 schrieb Stefan Bethke: I'm not sure that would be so easy. However, CONSPEED is/was the setting to be used if the actual setting cannot be determined when sio initializes. The code is there to determine the currently set speed (around line 2440 in sio.c in stable), but it seems it's not triggered on my system. Since you can't just printf some debug info there, I'm not sure which condition is not met, or if something else has since reset the sio to 9600. This piece of loader.conf works for me on latest current. Variations may or may not fail. console=comconsole,vidconsole boot_multicons=yes boot_serial=yes verbose_loading=yes boot_verbose=yes beastie_disable=yes comconsole_speed=115200 ___ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: kernel ignores kenv comconsole_speed?
Am 24.10.2006 um 16:41 schrieb Jeremy Chadwick: On Tue, Oct 24, 2006 at 09:41:57AM -0400, Vivek Khera wrote: Am 23.10.2006 um 17:46 schrieb Vivek Khera: On Oct 20, 2006, at 6:59 AM, Stefan Bethke wrote: As I said, boot and loader are happily using 115200, but the kernel uses the compiled-in default. I'll file a PR the next few days, hopefully with a patch. As I said, works for me. I wonder what it is you are going to patch? Did you try it with the separate -S option? Did it work? I think what Stefan refers to is the complex nature of how the serial port is initialised/tinkered with in stages. [ Very good, but very long explanation of the various users of the serial port omitted ] What I'd like to propose is similar to Stefan's recommendation: is there any way possible to: * Not touch the serial port AT ALL, EVER [...] I'm not sure that would be so easy. However, CONSPEED is/was the setting to be used if the actual setting cannot be determined when sio initializes. I haven't researched if there ever was code that tried to determine the sio settings when (re-)initializing. However, sioreg.h says: /* default serial console speed if not set with sysctl or probed from boot */ #ifndef CONSPEED #define CONSPEED 9600 #endif For me, probing from boot could just mean to initialize the speed from kenv comconsole_speed if set, and fall back to CONSPEED otherwise. I'll try to get around that on the weekend. In current, imp re-enabled the commented-out tunable for machdep.conspeed. Re-enabling that works without a problem, it seems (cf. 1.463 of sio.c). Stefan -- Stefan Bethke [EMAIL PROTECTED] Fon +49 170 346 0140 ___ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: kernel ignores kenv comconsole_speed?
Am 25.10.2006 um 10:57 schrieb Stefan Bethke: I'm not sure that would be so easy. However, CONSPEED is/was the setting to be used if the actual setting cannot be determined when sio initializes. The code is there to determine the currently set speed (around line 2440 in sio.c in stable), but it seems it's not triggered on my system. Since you can't just printf some debug info there, I'm not sure which condition is not met, or if something else has since reset the sio to 9600. Stefan -- Stefan Bethke [EMAIL PROTECTED] Fon +49 170 346 0140 ___ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: kernel ignores kenv comconsole_speed?
On Oct 23, 2006, at 6:19 PM, Stefan Bethke wrote: Am 23.10.2006 um 17:46 schrieb Vivek Khera: On Oct 20, 2006, at 6:59 AM, Stefan Bethke wrote: I have -DS115200 in /boot.config, and boot and loader are happily using this speed. However, the kernel appears to be hardwired to 9600. I've only ever gotten it to work when /boot.config looks like -D - S115200. I don't think you can merge the -S flag with the others, at least according to my read of the man page. As I said, boot and loader are happily using 115200, but the kernel uses the compiled-in default. I'll file a PR the next few days, hopefully with a patch. As I said, works for me. I wonder what it is you are going to patch? Did you try it with the separate -S option? Did it work?
Re: kernel ignores kenv comconsole_speed?
On Tue, Oct 24, 2006 at 09:41:57AM -0400, Vivek Khera wrote: Am 23.10.2006 um 17:46 schrieb Vivek Khera: On Oct 20, 2006, at 6:59 AM, Stefan Bethke wrote: I have -DS115200 in /boot.config, and boot and loader are happily using this speed. However, the kernel appears to be hardwired to 9600. I've only ever gotten it to work when /boot.config looks like -D - S115200. I don't think you can merge the -S flag with the others, at least according to my read of the man page. As I said, boot and loader are happily using 115200, but the kernel uses the compiled-in default. I'll file a PR the next few days, hopefully with a patch. As I said, works for me. I wonder what it is you are going to patch? Did you try it with the separate -S option? Did it work? I think what Stefan refers to is the complex nature of how the serial port is initialised/tinkered with in stages. boot0, boot2/loader, and the kernel all mess with the serial port, depending upon numerous aspects (/boot.config for boot0, loader.conf for boot2/loader, and CONSPEED in one's kernel config). Based upon what I've seen (and this is somewhat historic; this may have been changed within the past couple of years): * If you're using -S115200 in boot.config, or set BOOT_COMCONSOLE_SPEED=115200 in make.conf, boot0 will initialise the serial port to 115200. Otherwise, 9600. * Using comconsole in loader.conf for boot2/loader doesn't change speed of the serial port (AFAIK), but it does do some internal setup/configuration prior to the kernel loading. Just making note of that here. * If you've set CONSPEED=115200 in your kernel config, once the kernel loads, it'll initialise the serial port and use 115200. Otherwise, 9600. (This also appears to have the side-effect of limiting the maximum serial port speed possible on that serial port to whatever CONSPEED is. This may have been changed recently, as I've seen proof of CONSPEED defaulting to 9600 and being able to do things like tip -115200 or edit /etc/ttys and use std.115200 without any issues) What I'd like to propose is similar to Stefan's recommendation: is there any way possible to: * Not touch the serial port AT ALL, EVER (in boot0, boot2/loader, or the kernel) -- so that systems which have BIOS-level serial console/serial redirection will work? On all of our Supermicro boxes, the BIOS serial redirection works fine until some code touches the serial port. Once that happens, the interrupt the BIOS has tied itself to gets munged in some bad way, which results in the serial port no longer working. (Using hint.sio.0.disabled=1 and hint.sio.1.disabled=1 does not address my above request. The kernel still does something with the serial ports) -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networkinghttp://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB | ___ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: kernel ignores kenv comconsole_speed?
On Oct 20, 2006, at 6:59 AM, Stefan Bethke wrote: I have -DS115200 in /boot.config, and boot and loader are happily using this speed. However, the kernel appears to be hardwired to 9600. I've only ever gotten it to work when /boot.config looks like -D - S115200. I don't think you can merge the -S flag with the others, at least according to my read of the man page. Also make sure the boot loader is at least as new as that installed by 6.0-REL. Older ones (ie from 5.x didn't work at all with -S for me.) You will probably want to run fdisk -B to update that.
Re: kernel ignores kenv comconsole_speed?
Am 23.10.2006 um 17:46 schrieb Vivek Khera: On Oct 20, 2006, at 6:59 AM, Stefan Bethke wrote: I have -DS115200 in /boot.config, and boot and loader are happily using this speed. However, the kernel appears to be hardwired to 9600. I've only ever gotten it to work when /boot.config looks like -D - S115200. I don't think you can merge the -S flag with the others, at least according to my read of the man page. As I said, boot and loader are happily using 115200, but the kernel uses the compiled-in default. I'll file a PR the next few days, hopefully with a patch. Stefan -- Stefan Bethke [EMAIL PROTECTED] Fon +49 170 346 0140 ___ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to [EMAIL PROTECTED]
