Date: Wed, 23 Mar 2005 13:52:39 -0600 From: Dan Nelson <dnelson@allantgroup.com> To: Aziz KEZZOU <opensource.enthousiat@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: running freebsd in qemu using the "-nographic" option ? Message-ID: <20050323195239.GD90954@dan.emsphone.com> In-Reply-To: <37e131660503231138268bc6cb@mail.gmail.com> References: <37e131660503231138268bc6cb@mail.gmail.com>
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In the last episode (Mar 23), Aziz KEZZOU said: > I am running freebsd 5.3 under qemu (a fast IA32 emulator). My host > system is linux. Everything works fine, but I want to get rid of this > small non-scrollable window, not practical when gcc says I made many > many errors :-)... In FreeBSD, you can scroll vtys by hitting scroll-lock, then using the up/down/pgup/pgdn/home/end keys to view the scrollback. Hit scroll-lock again to go exit scrollback mode. You could also use screen or pipe your output to less. > Instead I want to get a console. In qemu's documentation it says : > ====================================================================== > `-nographic' > Normally, QEMU uses SDL to display the VGA output. With this > option, you can totally disable graphical output so that QEMU is a > simple command line application. The emulated serial port is > redirected on the console. Therefore, you can still use QEMU to debug > a Linux kernel with a serial console. > ====================================================================== > > So basically what I need is, some how, to tell the freebsd kernel to > forward its output/input to a serial port. In linux this is done by > supplying the parameter "console=ttyS0". Is there something > equivalent in FreeBSD ? To boot using a serial console, add this to /boot/loader.conf: console="comconsole" To enable a login prompt on the serial port after the system has come up, edit /etc/ttys and change the ttyd0 line from "off" to "on". -- Dan Nelson dnelson@allantgroup.com
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