On Thu, Aug 26, 2004 at 02:03:23AM -0400, Rick Thomas wrote: > > > Rick_Thomas wrote: > > > Well... on the beige G3, I booted into Open Firmware with the > > "ofonlyboot" floppy in the drive. The G3 comes up with console > > input/output being keyboard/screen. From another Mac running MacOS-9, I > > connected with MacKermit to the G3's modem port (which is normally > > "/dev/ttyS0" under Linux) > > > > At the G3's console, I typed "boot console=ttyS0<return>". The floppy > > drive made reading noises, and the "tuxMac" icon appeared on the G3's > > screen. Nothing happened at this point on the Kermit serial port -- > > there was no response when I type things at it over the serial port. > > > > After a while the floppy stopped making noises and a red "X" appeared > > over the tuxMac icon. Still no messages on the serial port, but now it > > at least will echo what I type at it. No response other than echos, > > though. It seems that I'm not talking to a live kernel. > > > > Does any one have a clue what the red "X" means? > > > > It appears that the "console=ttyS0" option is being noticed (at least > > that's how I interpret the fact that it switched from no-echo to echo at > > the point where the red "X" appeared...) So I could put other boot-time > > options there as well. Is there a "verbose" option I can try? > > 1) Reading man pages for "bootparam" seems to indicate that there is a > "debug" boot parameter that turns on more verbose logging to the console. > Unfortunately, when I tried it with the 2.6 boot floppy, there was no change > from the above described behavior. > > 2) For comparison purposes, I tried the same thing with the 2.4 > "powerpc-small" boot floppy. (the 2.4 root floppy is hosed, so I didn't > expect to get very far, but...) > > I booted the G3 into Open Firmware while listening to the modem serial port > on another machine -- as described above. On the G3's console, I typed "boot > debug console=ttyS0<return>". I was rewarded by a tuxmac icon and floppy > reading noises. When the noises stopped, the kernel boot messages appeared > on the G3's console screen, but nothing appered at the remote terminal > watching the serial port. > > So I'm no longer so sure as I once was that the parameters after "boot" in > Open Firmware are getting passed to the kernel. Is it possible to modify the > boot-parameters that are compiled into the kernel? For example, the > "ofonlyboot" kernel differs from the "boot" kernel only in that there is a > string "video=ofonly" in the former, but not in the latter. How does that > get there? Maybe the same mechanism could be used to give it the "debug" and > "console=ttyS0" options...
Since you don't feel like having time for building the boot floppies with those options yourself, which i understand altough it would be practical, i can build you floppies with the command line options you specify to me. Friendly, Sven LUther
