Hi Ahmad,
thank you for the great help. There's a lot to learn for me here.
> Does it come from the phytec git directly? Upstream barebox has this:
The zeus image I build here includes layer meta-phytec branch zeus and a custom
layer from phytec called meta-ksp0663.
On the custom layer I created a new branch zeus and just renamed the barebox
and barebox-targettools bbappend files from 2017 to 2019.
You are right about the missing state in barebox2019.01.
for barebox 2019 drvinfo just contains:
state
drvinfo for barebox 2017 says:
state
imx6qdl_phytec_boot_state.19
Does that mean that the driver is not loaded?
At the barebox2019 version of_dump returns: Cannot find nodepath state
At the barebox2017 version of_dump returns a full subtree for
imx6qdl_phytec_boot_state and the eeprom entry for state.
Looking into the 2017 barebox sources using find ./ -iname
"imx6qdl-phytec*.dtsi" it finds imx6qdl-phytec-state.dtsi:
This file does not exist in the 2019 barebox sources. There is only
imx6ul-phytec-state.dtsi available.
Now I will try the upstream version.
Thank you very much for your help.
Best Regards
hu
> -----Original Message-----
> From: Ahmad Fatoum <[email protected]>
> Sent: Monday, 20 January 2020 16:23
> To: Hans-Ulrich Schlieben <[email protected]>; Enrico Joerns
> <[email protected]>; [email protected]
> Cc: [email protected]
> Subject: Re: [yocto] #yocto bootchooser: Cannot get state 'state'
>
> Hello,
>
> On 1/16/20 4:09 PM, Hans-Ulrich Schlieben wrote:
> > Hi Ahmad,
> >
> > Thanks to your Mail I tested with barebox_2017.12.0-phy6.bb (thud used
> > barebox_2017.12.0-phy4.bb) and this works in zeus too.
> >
> >> According to the state command output under thud, your state is stored on
> >> the EEPROM, not the NAND. Look for update-eeprom in your device tree.
> >> There should also be an /dev/eeprom0.update-eeprom in barebox.
> > That seems right, when working the eeprom is written to on each boot.
> > But I could not find any references to *eep* inside barebox in any layer.
>
> Does it come from the phytec git directly? Upstream barebox has this:
> https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.pengutronix.de%2Fcgit%2Fbarebox%2Ftree%2Farch%2Farm%2Fdts%2Fimx6qdl-phytec-state.dtsi%3Fh%3Dnext&data=01%7C01%7Chu.schlieben%40codewrights.de%7Cfd604ff2646c497fbb3508d79dbca678%7C0974af9b352b437cb606e9f242c0c227%7C0&sdata=fXOQB7awFhPhxJmDAyN5ipLxe3W8IbAw3vp03GL1Y10%3D&reserved=0
>
> I would imagine, yours does to. You can check in the yocto build directory.
> (If you have rm_work enabled, you might need RM_WORK_EXCLUDE +=
> "your-barebox-recipe"
> in your local.conf)
>
> Also try of_dump /state inside of barebox to see the device tree node.
>
> The reason, you haven't found it in the deploy/ device tree is that barebox
> modifies the kernel device tree on loading and adds the state nodes to it.
>
> >> if not, try executing the drvinfo command and see if the driver has probed
> >> the EEPROM.
> >>>> Looks like the state node is missing in your device tree.
>
> Do you have the state driver enabled? drvinfo should tell you that.
>
> Cheers
> Ahmad
>
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