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

[Ajay Garg]

currently booting from tftp/nfs is on hold, first trying to get a
bootup using sdcard.

On Fri, Apr 27, 2018 at 8:23 AM, Ajay Garg <ajaygargnsit at gmail.com> wrote:
> 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



-- 
Regards,
Ajay