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

[David Aldrich]

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}:off 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}:off nfsroot=${serverip}:${rootpath}

So environment variable substitution is not happening.

What am I doing wrong please?

Best regards

David