* Loading u-boot binary from the u-boot command line
@ 2021-01-22 7:49 scd rjcom
2021-01-22 13:23 ` Amit Tomar
0 siblings, 1 reply; 3+ messages in thread
From: scd rjcom @ 2021-01-22 7:49 UTC (permalink / raw)
To: u-boot
I need to to test the modified u-boot binary. I want to test it without
writing it on the NOR flash, that already has a working u-boot.
Can I load the modified u-boot binary from the currently running u-boot
command line?
^ permalink raw reply [flat|nested] 3+ messages in thread
* Loading u-boot binary from the u-boot command line
2021-01-22 7:49 Loading u-boot binary from the u-boot command line scd rjcom
@ 2021-01-22 13:23 ` Amit Tomar
2021-01-22 14:32 ` Bin Meng
0 siblings, 1 reply; 3+ messages in thread
From: Amit Tomar @ 2021-01-22 13:23 UTC (permalink / raw)
To: u-boot
>
> Can I load the modified u-boot binary from the currently running u-boot
> command line?
>
Yes, U-boot supports chain loading.
On host machine you can use ckermit[1] program to load U-boot image using
serial or you can
use tftp to load modified U-boot image at SYS_TEXT_BASE address.
Once the image is loaded , you can bootm "SYS_TEXT_BASE".
Thanks
-Amit
[1]: http://blog.mezeske.com/?p=483
^ permalink raw reply [flat|nested] 3+ messages in thread
* Loading u-boot binary from the u-boot command line
2021-01-22 13:23 ` Amit Tomar
@ 2021-01-22 14:32 ` Bin Meng
0 siblings, 0 replies; 3+ messages in thread
From: Bin Meng @ 2021-01-22 14:32 UTC (permalink / raw)
To: u-boot
On Fri, Jan 22, 2021 at 9:23 PM Amit Tomar <atomar25opensource@gmail.com> wrote:
>
> >
> > Can I load the modified u-boot binary from the currently running u-boot
> > command line?
> >
>
> Yes, U-boot supports chain loading.
>
> On host machine you can use ckermit[1] program to load U-boot image using
> serial or you can
> use tftp to load modified U-boot image at SYS_TEXT_BASE address.
> Once the image is loaded , you can bootm "SYS_TEXT_BASE".
>
I think this only works if SYS_TEXT_BASE is a RAM address, which is
mostly the case for boards that don't run U-Boot from NOR flash after
POR.
Regards,
Bin
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-01-22 14:32 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2021-01-22 7:49 Loading u-boot binary from the u-boot command line scd rjcom
2021-01-22 13:23 ` Amit Tomar
2021-01-22 14:32 ` Bin Meng
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