Adam, It worked! I have a live linux console! Woohoo! Thank you so much!
Richard -----Original Message----- From: Adam Lackorzynski <[email protected]> Sent: Wednesday, April 16, 2025 3:11 PM To: Richard Clark <[email protected]>; [email protected] Cc: Bud Wykoff <[email protected]> Subject: Re: Linux console? Hi Richard, please check your modules.list. The default one (conf/modules.list) has "default-kernel fiasco -serial_esc". Either add this line or add an explicit "kernel fiasco -serial_esc" to your entry. Adam On Wed Apr 16, 2025 at 18:48:18 +0000, Richard Clark wrote: > Adam, > > ESC does nothing. I do not recall seeing -serial_esc anywhere. > Where exactly does that go? As part of Qemu command line? > Or in the config file? I will try to find where it goes and add it... > > > Richard > > > -----Original Message----- > From: Adam Lackorzynski <[email protected]> > Sent: Wednesday, April 16, 2025 1:31 PM > To: Richard Clark <[email protected]>; > [email protected] > Cc: Bud Wykoff <[email protected]> > Subject: Re: Linux console? > > Hi Richard, > > by any chance, missing -serial_esc on the fiasco command line? > Does ESC go into the debugger? > > > Adam > > On Wed Apr 16, 2025 at 17:07:20 +0000, Richard Clark wrote: > > Adam, > > > > It seems like something is not right with the connection between "cons" and > > Qemu. > > I see cons get run, but I cannot get into it. Ctrl-E does nothing. > > Could this be another part of the issue? > > > > > > Richard > > > > > > -----Original Message----- > > From: Adam Lackorzynski <[email protected]> > > Sent: Monday, April 14, 2025 4:05 PM > > To: Richard Clark <[email protected]>; > > [email protected] > > Cc: Bud Wykoff <[email protected]> > > Subject: Re: Linux console? > > > > Hi Richard, > > > > your dts has the 'l4vmm,vcon_cap = "uart";' enabled (not commented out), > > thus the 8250 UART emulation in uvmm looks for a "uart" capability which is > > not there and thus disables the virtual UART. Removing that line or > > commenting it out will make this work I believe as the standard capability > > will be used then. > > > > > > Adam > > > > On Mon Apr 14, 2025 at 11:57:32 +0000, Richard Clark wrote: > > > Adam, > > > > > > Yes the vm-basic.cfg is where I started. > > > > > > I am attaching a tgz file with two directories showing the two > > > different outputs that I get when trying to run hvc0 and ttyS0. Included > > > are the config files, the ramdisk, and the dts as well. > > > > > > > > > Richard > > > > > > > > > -----Original Message----- > > > From: Adam Lackorzynski <[email protected]> > > > Sent: Monday, April 14, 2025 12:49 AM > > > To: Richard Clark <[email protected]>; > > > [email protected] > > > Cc: Bud Wykoff <[email protected]> > > > Subject: Re: Linux console? > > > > > > Hi Richard, > > > > > > On Fri Apr 11, 2025 at 15:27:18 +0000, Richard Clark wrote: > > > > L4Re, > > > > > > > > I’ve been working with the examples and tweaking them for AMD64 > > > > (QEMU), and I’ve managed to get linux up and booting, reading > > > > the ramdisk, and even spawning a login process which kicks off > > > > /bin/sh and displays a # prompt. And that’s great, but that’s all it > > > > does. > > > > I can’t get any input to it. That’s using the device hvc0. Of > > > > course uvmm complains that there is no virtual console and warns > > > > that it might not work, so the software is at least not surprised! > > > > 😊 But when I try to use the device ttyS0, linux stops printing > > > > even before the login process tries to run. I don’t get any > > > > errors, but also no output. And I can’t seem to run the IO server > > > > because then linux won’t load at all (something about out-of-memory). > > > > > > > > I’m sure I’m missing some little piece of magic somewhere, but I > > > > can’t find any working examples. None of them have active logins > > > > (I had to add my own iniittab to the ramdisk). A little help > > > > connecting the cons service to my linux so I can get a real bash > > > > shell? Or running IO and connecting through that? > > > > > > Did you try to run for example the "VM-basic" entry that is there? That > > > is supposed to be a minimal working example. > > > Please also provide the output from the system you're getting, that is > > > helping understanding what's going on. > > > > > > > > > Thanks, Adam Adam -- Adam [email protected] Lackorzynski http://os.inf.tu-dresden.de/~adam/ _______________________________________________ l4-hackers mailing list -- [email protected] To unsubscribe send an email to [email protected]
