[PATCH V5 04/12] iot2050: Add watchdog start to bootcmd

[Tom Rini]

On Fri, Feb 03, 2023 at 01:26:33PM +0100, Jan Kiszka wrote:

> From: Jan Kiszka <jan.kiszka at siemens.com>
> 
> Allows run-time control over watchdog auto-start and the timeout via
> setting the environment variable watchdog_timeout_ms. A value of zero
> means "do not start". Use CONFIG_WATCHDOG_TIMEOUT_MSECS as initial value
> and this to zero by default. Users can then enable the watchdog once the
> use and OS which picks it up during boot.
> 
> Signed-off-by: Jan Kiszka <jan.kiszka at siemens.com>
[snip]
> diff --git a/include/configs/iot2050.h b/include/configs/iot2050.h
> index 7d087413362..5186dfd8ff8 100644
> --- a/include/configs/iot2050.h
> +++ b/include/configs/iot2050.h
> @@ -15,6 +15,14 @@
>  
>  /* SPL Loader Configuration */
>  
> +#define WATCHDOG_ENV							\
> +	"watchdog_timeout_ms=" __stringify(CONFIG_WATCHDOG_TIMEOUT_MSECS) "\0" \
> +	"start_watchdog=if test ${watchdog_timeout_ms} -gt 0; then "	\
> +		"wdt dev watchdog at 40610000; "				\
> +		"wdt start ${watchdog_timeout_ms}; "			\
> +		"echo Watchdog started, timeout ${watchdog_timeout_ms} ms; " \
> +		"fi\0"
> +
>  /* U-Boot general configuration */
>  #define EXTRA_ENV_IOT2050_BOARD_SETTINGS				\
>  	"usb_pgood_delay=900\0"
> @@ -43,6 +51,7 @@
>  #define CFG_EXTRA_ENV_SETTINGS					\
>  	DEFAULT_LINUX_BOOT_ENV						\
>  	BOOTENV								\
> +	WATCHDOG_ENV							\
>  	EXTRA_ENV_IOT2050_BOARD_SETTINGS

As a follow-up I would like to see all of this migrated to the plain
text environment, see board/*/*/*.env for various more and less complex
examples of this kind of conversion.

-- 
Tom
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