[U-Boot-Users] [Fwd: [PPCBoot-users] DHCP updating environment???]

[Steven Scholz <steven.scholz@imc-berlin.de>]

Steven Scholz wrote:
> 
> Steven Scholz wrote:
> >
> > Wolfgang Denk wrote:
> > >
> > > In message <3DC7C8C5.6983A78@imc-berlin.de> you wrote:
> > > >
> > > > > Seems you think right. Ummmm... why are you asking? Any problems with
> > > > > it?
> > > > Well, I am a bit anoyed because everytime I do a dhcp to get the settings for a
> > > > tftp I have to wait until pImage gets loaded...
> > > >
> > > > (Well not realy anoyed! Just curious why it is the way it is.)
> > > >
> > > > I want to do something like "dhcp; tftp 100000 fpga.rbf".
> > >
> > > I don't get you. Do you mean that setting "autoload" to "no" does NOT
> > > work with DHCP? From the code I think it should work.
> >
> > Ok. Example (from real life):
> >
> > After power on I have
> >
> > loadaddr=0x100000
> > serial#=69383
> > ethaddr=00:A0:33:01:07:0F
> >
> > A bootp results in:
> > => bootp
> > FEC ETHERNET configured
> > BOOTP broadcast 1
> > DHCP client bound to address 10.0.9.161
> > ARP broadcast 1
> > TFTP from server 10.0.2.9; our IP address is 10.0.9.161
> > Filename 'pImage.DAB4K2'.
> > Load address: 0x100000
> > Loading: #################################################################
> >          #################################################################
> >          ########
> > done
> > Bytes transferred = 702439 (ab7e7 hex)
> > => printenv
> > loadaddr=0x100000
> > serial#=69383
> > ethaddr=00:A0:33:01:07:0F
> > bootfile=pImage.DAB4K2
> > filesize=ab7e7
> > netmask=255.255.0.0
> > hostname=dab4k2_69383
> > rootpath=/opt/ELDK/ppc_8xx
> > ipaddr=10.0.9.161
> > serverip=10.0.2.9
> >
> > Fair enough! But let's do it again...
> >
> > => setenv autoload n
> > => bootp
> > FEC ETHERNET configured
> > BOOTP broadcast 1
> > DHCP client bound to address 10.0.9.161
> > => printenv
> > loadaddr=0x100000
> > serial#=69383
> > ethaddr=00:A0:33:01:07:0F
> > autoload=n
> > bootfile=pImage.DAB4K2
> >
> > You see!?
> >
> > Only "bootfile" gets set. So a following tftp brings
> >
> > => tftp 100000 pImage.DAB4K2
> > FEC ETHERNET configured
> > *** ERROR: `serverip' not set
> >
> > So I think BootpCopyNetParams() should get called regardless of autoload!
> 
> Sorry!!!
> BootpCopyNetParams() gets called regardless of autoload!
> 
> But
> 
> void BootpCopyNetParams(Bootp_t *bp)
> {
>         NetCopyIP(&NetOurIP, &bp->bp_yiaddr);
>         NetCopyIP(&NetServerIP, &bp->bp_siaddr);
>         memcpy (NetServerEther, ((Ethernet_t *)NetRxPkt)->et_src, 6);
>         copy_filename (BootFile, bp->bp_file, sizeof(BootFile));
> 
>         debug ("Bootfile: %s\n", BootFile);
> 
>         /* Propagate to environment:
>          * don't delete exising entry when BOOTP / DHCP reply does
>          * not contain a new value
>          */
>         if (*BootFile) {
>                 setenv ("bootfile", BootFile);
>         }
> }
> 
> So setenv is called only for bootfile. So should we call setenv for OurIP,
> ServerIp etc or should tftp check NetOurIP or bp->bp_yiaddr!?

I should realy read more before start writing! ;-)

netbootp_update_env() is what I need! When I call netbootp_update_env() from
within the DHCPHandler when autoload == n then I get what I need...

=> setenv autoload n
=> dhcp
FEC ETHERNET configured
BOOTP broadcast 0
DHCP client bound to address 10.0.9.161
=> printenv
loadaddr=0x100000
serial#=69383
ethaddr=00:A0:33:01:07:0F
autoload=n
bootfile=pImage.DAB4K2
netmask=255.255.0.0
hostname=dab4k2_69383
rootpath=/opt/ELDK/ppc_8xx
ipaddr=10.0.9.161
serverip=10.0.2.9

What do you think?

Steven