[PATCH 1/3] cmd: env: Add 'env import -h' for Marvell hw_info formatted environments

[Tom Rini]

On Thu, Feb 04, 2021 at 11:46:35AM +0100, Luka Kovacic wrote:

> The '-h' flag is added to the 'env import' command to enable parsing
> Marvell hw_info formatted environments.
> This format is often used on Marvell Armada A37XX based devices to store
> parameters like the board serial number, factory MAC addresses and some
> other information.
> 
> Currently this environment format can only be imported, not exported.
> These parameters are usually written to the flash in the factory.
> 
> This functionality has been tested on the GST ESPRESSOBin-Ultra board
> successfully.
> 
> Usage example:
>  => sf probe
>  => sf read ${loadaddr} 0x003E000A 0x1F0 # Read the environment from
> SPI flash
>  => env import -h ${loadaddr}
> 
> Signed-off-by: Luka Kovacic <luka.kovacic at sartura.hr>
> Cc: Luka Perkov <luka.perkov at sartura.hr>
> Cc: Robert Marko <robert.marko at sartura.hr>

So, the implementation itself is fine:

Reviewed-by: Tom Rini <trini at konsulko.com>

And I take it as a given that we can't get the boards populated with an
existing separator, so we need to solve this somehow or another.  I am
however loathe to increase every platform by a handful of bytes (help
text, code text) to cover this case, and adding #ifdef around the help
text in particular would be very ugly.  Is there any clean way to write
this as a board-specific command?  I assume the overall intention is to
import the factory env for the required information, store it in regular
U-Boot environment and then never touch the factory area again.  Thanks!

-- 
Tom
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