[PATCH 3/3] arm: mvebu: helios-4: add defconfig for spi booting

[Tom Rini]

On Sat, Jan 13, 2024 at 05:36:57PM +0100, Josua Mayer wrote:

> Add a new defconfig based on existing helios4_config file to support
> booting from spi flash.
> 
> Settings for environment location are based on vendor u-boot:
> https://github.com/kobol-io/u-boot/blob/helios4/include/configs/helios4.h#L59
> 
> A separate defconfig is required because the options are not
> intuitive from menuconfig, numeric values in particular.
> 
> Signed-off-by: Josua Mayer <josua at solid-run.com>
> ---
>  configs/helios4_spi_defconfig | 81 +++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 81 insertions(+)

So, a super new thing that might be of interest, but please try this
since I'd like to prove/disprove the use-case.  This could instead be:
configs/helios4_spi_defconfig:
#include "configs/helios4_defconfig"
... enable/disable options specific to the SPI boot use case ...

And so now both boards will otherwise be kept in-sync for general config
changes.  It could further be done as:
configs/helios4_spi_defconfig:
#include "configs/helios4_defconfig"
#include "board/kobol/helios4/spiboot.config"

And have board/kobol/helios4/spiboot.config contain the SPI-boot
specific options.  This path would allow for:
make helios4_defconfig spiboot.config
to be a valid alternative way of configuring a build for spiboot.

-- 
Tom
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