[Buildroot] bootm - "Starting kernel"

Lee, Tommy Tommy_Lee at alliedtelesis.com
Fri Aug 21 15:56:55 UTC 2015


Brendan,

I did not touch the inittab files in my buildroot-2015.05. There are five files in the folder as:

tclee at Latitude-E6400:~/Downloads/aug10mon15/buildroot-2015.05$ find . -name inittab|xargs ls -lrt
-rw-rw-r-- 1 tclee tclee 3067 Mar 22 20:06 ./output/build/busybox-1.23.2/examples/inittab
-rw-rw-r-- 1 tclee tclee  100 Mar 22 20:06 ./output/build/busybox-1.23.2/examples/bootfloppy/etc/inittab
-rw-rw-r-- 1 tclee tclee 1053 May 31 14:15 ./system/skeleton/etc/inittab
-rw-rw-r-- 1 tclee tclee  747 May 31 14:15 ./package/sysvinit/inittab
-rw-rw-r-- 1 tclee tclee 1056 Aug 20 15:49 ./output/target/etc/inittab

My booting process must use the last inittab  which was built yesterday. Following are the TTY settings in my current .config file:

tclee at Latitude-E6400:~/Downloads/aug10mon15/buildroot-2015.05$ egrep -n TTY .config
286:BR2_TARGET_GENERIC_GETTY=y
291:BR2_TARGET_GENERIC_GETTY_PORT="ttyS0"
292:# BR2_TARGET_GENERIC_GETTY_BAUDRATE_KEEP is not set
293:# BR2_TARGET_GENERIC_GETTY_BAUDRATE_9600 is not set
294:# BR2_TARGET_GENERIC_GETTY_BAUDRATE_19200 is not set
295:# BR2_TARGET_GENERIC_GETTY_BAUDRATE_38400 is not set
296:# BR2_TARGET_GENERIC_GETTY_BAUDRATE_57600 is not set
297:BR2_TARGET_GENERIC_GETTY_BAUDRATE_115200=y
298:BR2_TARGET_GENERIC_GETTY_BAUDRATE="115200"
299:BR2_TARGET_GENERIC_GETTY_TERM="vt100"
300:BR2_TARGET_GENERIC_GETTY_OPTIONS="n81"

My U-Boot console string is " ttyS0,115200". I doubt whether the settings on Line 299 and Line 300 are improper.

Tommy




-----Original Message-----
From: Brendan Heading [mailto:brendanheading at gmail.com]
Sent: Thursday, August 20, 2015 5:12 PM
To: Lee, Tommy
Cc: buildroot at busybox.net
Subject: Re: [Buildroot] bootm - "Starting kernel"

> FYI, I unplugged the Ethernet cable and did the steps again. This time
> the same “tty: bad speedgetty” message is still repeated.

Nothing to do with ethernet - it sounds like it's trying to start getty but there's an issue with the speeds. The error message comes from loginutils/getty.c inside busybox.

Did you mess around with /etc/inittab, or did you leave it at the defaults ?

Brendan

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