From: U.Mutlu <for-gmane@mutluit.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] Automatic starting of netconsole at boot
Date: Tue, 9 Apr 2019 19:05:41 +0200 [thread overview]
Message-ID: <q8ijd7$2hm7$1@blaine.gmane.org> (raw)
Hi,
I built u-boot with CONFIG_NETCONSOLE=y. It works, but how can I set up
u-boot so that after rebooting, it automatically (ie. w/o manual interaction)
goes into netconsole mode?
Ie. controlling the device remotely via netconsole by using the
tools/netconsole script on the host as shown in doc/README.NetConsole,
but there only a manual setup is given. For auto-starting netconsole
I put these commands into boot.cmd and compiled it to boot.scr on the device:
setenv ipaddr 192.168.1.7
setenv ncip 192.168.1.2
setenv nc 'setenv stdout nc;setenv stdin nc;setenv stderr nc'
run nc
At boot the netconnect connection seems to work as I get some output
on the host, but after only a few seconds the device reboots itself:
root at xy:/.../u-boot# tools/netconsole 192.168.1.7
Board out port: 6666
Board in port: 6666
NOTE: the interrupt signal (normally ^C) has been remapped to ^T
ncb: not found
#MYINFO: the following output comes from the remote board via netconsole:
SCRIPT FAILED: continuing...
scanning bus for devices...
data abort
pc : [<7ef94f8e>] lr : [<7ef911a1>]
reloc pc : [<4a01af8e>] lr : [<4a0171a1>]
sp : 7af515b0 ip : 0000001c fp : 000000c0
r10: 00000000 r9 : 7af59ed8 r8 : 00000000
r7 : 7af51830 r6 : 7efd3f54 r5 : 7efdb9b8 r4 : 7efdb9b8
r3 : 00000000 r2 : 00000000 r1 : ea000016 r0 : 7efdb9b8
Flags: nZcv IRQs off FIQs off Mode SVC_32
Code: e92dbd10 f8d045f0 b0858080 1000f8d8 (f8d14604)
Resetting CPU ...
It seems one needs some more commands when doing it inside boot.scr,
or a different method.
Or is the use of the envvar "nc" above maybe buggy: recursive definitions
maybe? [I just followed the above u-boot doc]
Is such an auto-start of netconsole possible at boot, and if yes how?
Thx
--
U.Mutlu
next reply other threads:[~2019-04-09 17:05 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-09 17:05 U.Mutlu [this message]
2019-04-09 18:05 ` [U-Boot] Automatic starting of netconsole at boot U.Mutlu
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