[U-Boot] Hang while booting kernel via tftp/nfs on cubieboard2

[Ajay Garg]

Seems setting bootargs is not legal in bootz command, so segregated the two.
However, the end-result is same as in my original email.


tftp 0x49000000 sun7i-a20-cubieboard2.dtb

tftp 0x46000000 zImage-Cubieboard2

setenv bootargs console=ttyS0,115200 root=/dev/nfs
nfsroot=192.168.0.1:/srv/nfs/cubieboard2,nfsvers=3
ip=192.168.0.2:192.168.0.1::255.255.255.0:cubieboard2 ignore_loglevel
cma=128M

bootz 0x46000000 - 0x49000000

On Fri, Apr 27, 2018 at 7:39 AM, Ajay Garg <ajaygargnsit at gmail.com> wrote:
> Hi All.
>
>
> a)
> As a pre-requisite, on the host-machine (serverip 192.168.0.1), the
> nfs-export is listed fine :
>
> ajay at latitude-3480:~showmount -e localhost
> Export list for localhost:
> /srv/nfs/cubieboard2 *
>
>
> b)
> The zImage and dtb files have been generated from 4.6 kernel, as per steps at
> https://github.com/maronai/cubieboard/wiki/3.1.-Compiling-mainline-kernel-for-CubieBoard2-and-CubieTruck
>
>
> Now, when trying to boot cubieboard2 via tftp/nfs, I get a hang, all
> details as below :
>
> ###########################################################################################################
> U-Boot SPL 2017.01-2 (Jan 18 2017 - 21:30:38)
> DRAM: 1024 MiB
> CPU: 912000000Hz, AXI/AHB/APB: 3/2/2
> Trying to boot from MMC1
>
> U-Boot 2017.01-2 (Jan 18 2017 - 21:30:38 -0700) Arch Linux ARM
>
> CPU:   Allwinner A20 (SUN7I)
> Model: Cubietech Cubieboard2
> I2C:   ready
> DRAM:  1 GiB
> MMC:   SUNXI SD/MMC: 0
> In:    serial
> Out:   serial
> Err:   serial
> SCSI:  SATA link 0 timeout.
> AHCI 0001.0100 32 slots 1 ports 3 Gbps 0x1 impl SATA mode
> flags: ncq stag pm led clo only pmp pio slum part ccc apst
> Net:   eth0: ethernet at 01c50000
> Hit any key to stop autoboot:  0
>
> => printenv
> autoboot=run loadkernel && run setargs && true && bootm 0x48000000
> baudrate=115200
> boot_ram=saved_stdout=$stdout;setenv stdout nc;if iminfo 0x41000000;
> then true; setenv stdout $saved_stdout; source 0x41000000;else setenv
> stdi
> bootcmd=if run loadbootenv; then echo Loaded environment from
> ${bootenv};env import -t ${scriptaddr} ${filesize};fi;if test -n
> "${uenvcmd}"; t;
> bootdelay=3
> bootenv=uEnv.txt
> bootscr=boot.scr
> console=ttyS0,115200
> device=mmc
> ethact=ethernet at 01c50000
> ethaddr=12:34:56:78:90:ab
> fdtcontroladdr=7af2e820
> ipaddr=192.168.0.2
> kernel=uImage
> loadbootenv=fatload $device $partition $scriptaddr ${bootenv} ||
> ext2load $device $partition $scriptaddr boot/${bootenv} || ext2load
> $device $}
> loadbootscr=fatload $device $partition $scriptaddr ${bootscr} ||
> ext2load $device $partition $scriptaddr boot/${bootscr} ||ext2load
> $device $p}
> loadkernel=if bootpath=/boot/ && ext2load $device $partition
> 0x43000000 ${bootpath}script.bin && ext2load $device $partition
> 0x48000000 ${booti
> loglevel=8
> panicarg=panic=10
> partition=0:1
> scriptaddr=0x44000000
> serial#=1651660f06c3457c
> serverip=192.168.0.1
> setargs=if test -z \\"$root\\"; then if test \\"$bootpath\\" =
> "/boot/"; then root="/dev/mmcblk0p1 rootwait"; else
> root="/dev/mmcblk0p2 rootwa}
> stderr=serial
> stdin=serial
> stdout=serial
>
> Environment size: 1979/131068 bytes
>
> => tftp 0x49000000 sun7i-a20-cubieboard2.dtb
> Speed: 100, full duplex
> Using ethernet at 01c50000 device
> TFTP from server 192.168.0.1; our IP address is 192.168.0.2
> Filename 'sun7i-a20-cubieboard2.dtb'.
> Load address: 0x49000000
> Loading: ###
>          4 MiB/s
> done
> Bytes transferred = 29537 (7361 hex)
>
> => tftp 0x46000000 zImage-Cubieboard2
> Speed: 100, full duplex
> Using ethernet at 01c50000 device
> TFTP from server 192.168.0.1; our IP address is 192.168.0.2
> Filename 'zImage-Cubieboard2'.
> Load address: 0x46000000
> Loading: #################################################################
>          #################################################################
>          #################################################################
>          ####################################
>          4.6 MiB/s
> done
> Bytes transferred = 3388416 (33b400 hex)
>
> => bootz 0x46000000 - 0x49000000 console=ttyS0,115200 root=/dev/nfs
> nfsroot=192.168.0.1:/srv/nfs/cubieboard2,nfsvers=3
> ip=192.168.0.2:192.168.0.1::255.255.255.0:cubieboard2 ignore_loglevel
> cma=128M
> ## Flattened Device Tree blob at 49000000
>    Booting using the fdt blob at 0x49000000
>    Loading Device Tree to 7af23000, end 7af2d360 ... OK
>
> Starting kernel ...
> ###########################################################################################################
>
>
> What am I doing wrong? In general, how do I proceed to debug to get
> this working?
>
> Will be grateful for pointers.
>
>
> Thanks and Regards,
> Ajay



-- 
Regards,
Ajay