Can't Modify U-Boot Environment Variables on Updated Firmware

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Revision as of 18 July 2017 at 08:57.
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I am trying to get up and running with the R-Car H3 Starter Kit Premier Board (h3ulcb). I first followed the instructions here to build Yocto 2.19 for the board. When I attempted to run the built Yocto image on the board (both via tftp and via microSD), I received a kernel panic message. The limited resources on the internet (i.e., the other posts on this wiki) indicated this could likely be resolved by updating the firmware. I then followed the instructions here to update the firmware on the board. Now when I turn the board on, I cannot get to the stage where the option of cancelling autoboot (as shown in examples in the links given). I am therefore not able to change U-Boot's environment variables to specify the Image file to boot. It seems that U-Boot is perhaps not loading at all. Any help would be greatly appreciated!

Output of boot sequence is below:

user@user-linux:~$ sudo picocom -b 115200 --send-cmd "ascii-xfr -vvs" /dev/ttyUSB0

[sudo] password for user:

picocom v1.7

port is : /dev/ttyUSB0

flowcontrol : none

baudrate is : 115200

parity is : none

databits are : 8

escape is : C-a

local echo is : no

noinit is : no

noreset is : no

nolock is : no

send_cmd is : ascii-xfr -vvs

receive_cmd is : rz -vv

imap is :

omap is :

emap is : crcrlf,delbs,

Terminal ready

[ 0.000194] NOTICE: BL2: R-Car Gen3 Initial Program Loader(CA57) Rev.1.0.14

[ 0.005761] NOTICE: BL2: PRR is R-Car H3 Ver2.0

[ 0.010335] NOTICE: BL2: Board is unknown Rev0.0

[ 0.015006] NOTICE: BL2: Boot device is HyperFlash(80MHz)

[ 0.020445] NOTICE: BL2: LCM state is CM

[ 0.024423] NOTICE: BL2: AVS setting succeeded. DVFS_SetVID=0x52

[ 0.030611] NOTICE: BL2: DDR3200(rev.0.22)NOTICE: [COLD_BOOT]NOTICE: ..0

[ 0.091270] NOTICE: BL2: DRAM Split is 4ch

[ 0.095155] NOTICE: BL2: QoS is default setting(rev.0.14)

[ 0.100655] NOTICE: BL2: Lossy Decomp areas

[ 0.104832] NOTICE: Entry 0: DCMPAREACRAx:0x80000540 DCMPAREACRBx:0x570

[ 0.111917] NOTICE: Entry 1: DCMPAREACRAx:0x40000000 DCMPAREACRBx:0x0

[ 0.118829] NOTICE: Entry 2: DCMPAREACRAx:0x20000000 DCMPAREACRBx:0x0

[ 0.125743] NOTICE: BL2: v1.3(release):4eef9a2

[ 0.130233] NOTICE: BL2: Built : 17:35:56, Jul 13 2017

[ 0.135420] NOTICE: BL2: Normal boot

[ 0.139062] NOTICE: BL2: dst=0xe6320190 src=0x8180000 len=512(0x200)

[ 0.145608] NOTICE: BL2: dst=0x43f00000 src=0x8180400 len=6144(0x1800)

[ 0.152070] NOTICE: BL2: dst=0x44000000 src=0x81c0000 len=65536(0x10000)

[ 0.159295] NOTICE: BL2: dst=0x44100000 src=0x8200000 len=524288(0x80000)

[ 0.169775] NOTICE: BL2: dst=0x50000000 src=0x8640000 len=1048576(0x100000)

    05:25, 17 July 2017

    I'm not sure if the Renesas engineers are watching these pages to handle support requests. I think you would be better served by asking the question on their board mailing list. See

      15:13, 17 July 2017

      I have done so. It looks like my problem is similar to the "Firmware update hangs" thread below except that I can actually get the firmware update to happen. The update obviously doesn't work though since U-Boot doesn't load when it should.

        00:57, 18 July 2017