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 <a...@l4re.org> Sent: Wednesday, April 16, 2025 1:31 PM To: Richard Clark <richard.cl...@coheretechnology.us>; l4-hackers@os.inf.tu-dresden.de Cc: Bud Wykoff <bud.wyk...@coheretechnology.us> 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 <a...@l4re.org> > Sent: Monday, April 14, 2025 4:05 PM > To: Richard Clark <richard.cl...@coheretechnology.us>; > l4-hackers@os.inf.tu-dresden.de > Cc: Bud Wykoff <bud.wyk...@coheretechnology.us> > 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 <a...@l4re.org> > > Sent: Monday, April 14, 2025 12:49 AM > > To: Richard Clark <richard.cl...@coheretechnology.us>; > > l4-hackers@os.inf.tu-dresden.de > > Cc: Bud Wykoff <bud.wyk...@coheretechnology.us> > > 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 -- l4-hackers@os.inf.tu-dresden.de To unsubscribe send an email to l4-hackers-le...@os.inf.tu-dresden.de
