How to configure and enable the barebox state?

How to configure and enable the barebox state?

[Trostel Alain]

Hi,

I would like to configure and enable the barebox state. My assumption is
that I need to change the following device tree for my Phytec AM335x
SOM:

arch/arm/dts/am335x-phytec-phycore-som.dts

But from the documentation
(http://www.barebox.org/doc/latest/devicetree/bindings/barebox/barebox,state.html) it is not clear to me where exactly I need to add the variable node example. Furthermore, I have check that the 'CONFIG_OFDEVICE' is enabled.
So, where is the correct place to add the variable node configuration
and what needs to be enabled in barebox?

Best regards,
Alain
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Re: How to configure and enable the barebox state?

[Sascha Hauer]

Hi Alain,

On Thu, Oct 13, 2016 at 01:38:36PM +0000, Trostel Alain wrote:
> Hi,
> 
> I would like to configure and enable the barebox state. My assumption is
> that I need to change the following device tree for my Phytec AM335x
> SOM:
> 
> arch/arm/dts/am335x-phytec-phycore-som.dts
> 
> But from the documentation
> (http://www.barebox.org/doc/latest/devicetree/bindings/barebox/barebox,state.html)
> it is not clear to me where exactly I need to add the variable node
> example.

You can put it anywhere in the device tree that is parsed by the device
parser. I would recommend putting it directly in the root node.

> Furthermore, I have check that the 'CONFIG_OFDEVICE' is
> enabled.
> So, where is the correct place to add the variable node configuration
> and what needs to be enabled in barebox?

for using the state framework you'll need:

CONFIG_STATE
CONFIG_STATE_DRV
CONFIG_CMD_STATE

If you want to use the bootchooser ontop of state you'll also need:

CONFIG_BOOTCHOOSER
CONFIG_CMD_BOOTCHOOSER

Sascha

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