Re: How to write u-boot bootloader for Jetson TX1

[Jared McNeill <jmcneill%invisible.ca@localhost>]

Can you try an older version (R23.x) of L4T's flash tools? ISTR having 
trouble with the new version.



On Fri, 15 Jun 2018, Gmail TM wrote:

> Thank you for your reply, Jared.
>
> > 2018/06/12 21:54、Jared McNeill <jmcneill%invisible.ca@localhost>のメール:
> >
> > I think if you are just updating U-Boot, you need to specify '-k LNX' on the flash.sh command-line. Let me know if that helps..
>
> I try flash.sh with -k LNK option, but it stop at "Updating BCT with signature”
> 	https://sacraya.610t.org/TX1/boot/flash.sh.LNX.20180613.txt
>
>  $ sudo ./flash.sh  -k LNX -L ~/u-boot-dtb.bin jetson-tx1 mmcblk0p1
> 	(snip)
>  [   3.7436 ] Signing BCT
>  [   3.7489 ] tegrasign --key None --list bct_list.xml --pubkeyhash pub_key.key
>  [   3.7568 ] Assuming zero filled SBK key
>  [   3.7878 ]
>  [   3.7878 ] Updating BCT with signature
>  [   3.7892 ] tegrabct --bct P2180_A00_LP4_DSC_204Mhz.bct --chip 0x21 --updatesig bct_list_signed.xml
>
> I think that when I want to update bootloader only, I must use -k EBT option.
> The flash.sh comment says
>  # ./flash.sh -k EBT <target_board> mmcblk1p1            - update <target_board> bootloader
>  # ./flash.sh -k LNX <target_board> mmcblk1p1            - update <target_board> kernel
>
> I can write u-boot-dtb.bin with -k EBT,
> 	https://sacraya.610t.org/TX1/boot/flash.sh.NetBSD-uboot-dtb.bin.EBT.20180614.txt
> but it doesn’t work now.
> 	https://sacraya.610t.org/TX1/boot/dmesg.NetBSD_u-boot.EBT.20180614.txt
>
> By the way, pkgsrc/sysutils/u-boot-jetson-tx1 has two bootloaders, u-boot and u-boot-dtb.bin.
> Which bootloader should I use?
>
> Thanks.