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 _______________________________________________ l4-hackers mailing list -- [email protected] To unsubscribe send an email to [email protected]
