On Wed, Dec 16, 2009 at 02:47:30AM +0300, Vitaly Bordug wrote:
>
> From: Heiko Schocher <h...@denx.de>
>
> This driver provides (read/write) access to the
> U-Boot bootcounter via PROC FS or sysFS.
>
> in u-boot, it uses a 8 byte mem area (it must hold the value over a
> soft reset of course), for storing a bootcounter (it counts many soft
> resets are done, on hard reset it starts with 0). If the bootcountvalue
> exceeds the value in the env variable "bootlimit", and alternative
> bootcmd stored in the env variable "altbootcmd" is run.
>
> The bootcountregister gets configured via DTS.
> for example on the mgsuvd board:
>
> bootco...@0x3eb0 {
> device_type = "bootcount";
No device_type.
> compatible = "uboot,bootcount";
> reg = <0x3eb0 0x08>;
> };
This area should also be in the flattened tree's reserved map.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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