[U-Boot-Users] netconsole doesn't work if $(serverip) is assigned to ncip instead of hardcoded value

From: Igor Marnat <marny@rambler.ru>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] netconsole doesn't work if $(serverip) is assigned to ncip instead of hardcoded value
Date: Tue, 27 Mar 2007 15:15:29 +0400	[thread overview]
Message-ID: <15015754812.20070327151529@rambler.ru> (raw)
In-Reply-To: <20070327084001.D08A635261B@atlas.denx.de>

Hello Wolfgang,

WD> You must be doing something wrong. "ncip" and "serverip" are
WD> completely unrelated.

Sure. I just thought that it's possible to use environment variables
to assign values to all other variables. That is to say, if assignment

addip=setenv bootargs $(bootargs) ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask):$(hostname):$(netdev):off panic=1

works ok (it uses $(serverip)), why can't I use

ncip=$(serverip)?

See below the full environment. The only difference between two scenarious
is that it works if ncip=10.0.0.55 and it doesn't if ncip=$(serverip).

=> printenv baudrate=115200
loads_echo=1
eth1addr=00:50:c2:1e:af:fd
netdev=eth0
ethaddr=00:50:c2:1e:af:f1
kernel_flash_addr=ffe04000
kernel_flash_end=fffbffff
kernel_flash_space=$(kernel_flash_addr) $(kernel_flash_end)
poff=protect off $(kernel_flash_addr) $(kernel_flash_end)
erase_kernel=era $(kernel_flash_addr) $(kernel_flash_end)
upd_kernel=tftpboot; run poff; run erase_kernel; cp.b $(fileaddr) $(kernel_flash_addr) $(filesize)
flash_nfs=run nfsargs addip addcons;bootm $(kernel_flash_addr)
nfsargs=setenv bootargs root=/dev/nfs rw nfsroot=$(serverip):$(rootpath) rootpath=$(rootpath)
addip=setenv bootargs $(bootargs) ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask):$(hostname):$(netdev):off panic=1
addcons=setenv bootargs $(bootargs) console=ttyS0,$(baudrate)
nfs26=/home/igor/tz-64/ppc/tz_64_nfs
rootpath=/home/igor/tz-64/ppc/tz_64_nfs
addmem=setenv bootargs $(bootargs) mem=16M
filesize=ebe75
fileaddr=200000
netmask=255.255.255.0
serverip=10.0.0.55
bootargs=root=/dev/nfs rw nfsroot=90.0.0.55:/home/igor/tz-64/ppc/tz_64_nfs rootpath=/home/igor/tz-64/ppc/tz_64_nfs
ip=90.0.0.137:90.0.0.55::255.255.255.0::eth0:off panic=1
net_nfs=tftp 200000 $(bootfile);run nfsargs addip addcons addmem;bootm
mtd_args=setenv bootargs root=/dev/mtdblock0 rw rootfstype=jffs2
net_mtd=tftp 200000 $(bootfile);run mtd_args addip addcons addmem;bootm
ipaddr=10.0.0.239
bootfilesaved=uImage26
bootcmdsaved=run net_mtd
bootfile=uImage26nandconsole
nc=setenv stdout nc;setenv stdin nc
ncip=10.0.0.55
ethact=ppc_4xx_eth0
com_eth_go=run echo_sleep; run nc; run echo_sleep; run net_nfs
bootcmd=run com_eth_go
echo_sleep=echo "I am sleeping, press CTRL-C to stop";sleep 4;
bootdelay=2
stdin=serial
stdout=serial
stderr=serial

-- 
Best regards,
Igor Marnat
mailto:marny at rambler.ru