[U-Boot] Question about U-Boot env variable substitution

David Aldrich David.Aldrich at EMEA.NEC.COM
Tue May 1 18:10:43 CEST 2012


I have fixed this now.

Best regards

David

> -----Original Message-----
> From: u-boot-bounces at lists.denx.de [mailto:u-boot-
> bounces at lists.denx.de] On Behalf Of David Aldrich
> Sent: 01 May 2012 13:29
> To: u-boot at lists.denx.de
> Subject: [U-Boot] Question about U-Boot env variable substitution
> 
> Hi
> 
> I would be grateful for some help with environment variable substitution in
> U-Boot please.
> 
> I have:
> 
> => printenv
> [snip]
> bootargs=console=ttyS0,115200 root=/dev/nfs rw
> ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}:${netdev}:of
> f nfsroot=${serverip}:${rootpath} [snip] bootcmd=run
> flashboot_nohv_mount_nfs [snip] flashboot_nohv_mount_nfs=setenv
> bdev /dev/ram; run bootargs; bootm $kern_flash $rfs_flash $fdt_flash [snip]
> 
> ipaddr etc. are also defined.
> 
> When I leave the system to autoboot I see:
> 
> [    0.000000] Kernel command line: console=ttyS0,115200 root=/dev/nfs rw
> ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}:${netdev}:of
> f nfsroot=${serverip}:${rootpath}
> 
> So environment variable substitution is not happening.
> 
> What am I doing wrong please?
> 
> Best regards
> 
> David
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