From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Nelson <eric.nelson@boundarydevices.com>
Date: Fri, 06 Feb 2015 13:36:15 -0700
Subject: [U-Boot] [PATCH] imx: save reset cause in 'reset_cause'
	environment variable
In-Reply-To: <1423177068-15958-1-git-send-email-eric.nelson@boundarydevices.com>
References: <54D3BB1E.1060409@denx.de>
 <1423177068-15958-1-git-send-email-eric.nelson@boundarydevices.com>
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To: u-boot@lists.denx.de

Hi all,

On 02/05/2015 03:57 PM, Eric Nelson wrote:
> The cause of a reset is generally useful, and shouldn't be
> blindly cleared in the process of displaying it as a part
> of the boot announcement.
> 
> Stash the string representation in the environment variable
> "reset_cause".
> 
>
> <snip>
> 
> Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
> ---
>  arch/arm/imx-common/cpu.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm/imx-common/cpu.c b/arch/arm/imx-common/cpu.c
> index 28ccd29..31d6e61 100644
> --- a/arch/arm/imx-common/cpu.c
> +++ b/arch/arm/imx-common/cpu.c
> @@ -32,6 +32,8 @@ char *get_reset_cause(void)
>  	cause = readl(&src_regs->srsr);
>  	writel(cause, &src_regs->srsr);
>  
> +	setenv_hex("reset_cause", cause);
> +

Nak.

This routine is called before the environment is initialized.