[U-Boot] [PATCH 1/4] cmd_mem.c: add a memory wait (mwait) command

[Tom Rini]

On Tue, Nov 10, 2015 at 01:13:17PM +0100, jacquiot.aurelien at gmail.com wrote:

> From: Aurelien Jacquiot <a-jacquiot at ti.com>
> 
> This new memory command allows to wait a given value in memory.
> It can be useful when U-Boot is used in a slave mode (another device
> is pushing images to the local memory) such as RapidIO or any
> RDMA kind of transport. We can then be notified that images have been
> loaded to our memory before booting.
> 
> Usage is: mwait[.b, .w, .l, .q] address value

First, we need to add a new CONFIG_CMD_MWAIT (and Kconfig entry) for
this.  Second:

> +		WATCHDOG_RESET();
> +		udelay(1000);

Lets use 100 here not 1000, after looking at how long we wait during
'sleep' which is this an equivalent of.  Thanks!

-- 
Tom
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