[U-Boot] [PATCH 1/4] Add microsecond boot time measurement

[Mike Frysinger <vapier@gentoo.org>]

On Friday, May 13, 2011 16:52:00 Simon Glass wrote:
> --- a/include/common.h
> +++ b/include/common.h
> @@ -177,6 +177,14 @@ typedef void (interrupt_handler_t)(void *);
>  #endif /* CONFIG_SERIAL_MULTI */
> 
>  /*
> + * Return the time since boot in microseconds, This is needed for
> bootstage
> + * and should be defined in CPU- or board-specific code.
> + */
> +unsigned long timer_get_us(void);

the API is already "get_timer()" for msec precision, so this probably should 
be named "timer_get_us()".  although this differs from the common "get_timer" 
in that this is supposed to return an absolute time from boot instead of 
relative to the passed in "base", so probably want to name it accordingly to 
avoid confusion: timer_get_boot_us().

the POST code already has a func that does this called "post_time_ms()".  so 
that should get thrown out and converted to this new func.

all of which means this particular func should be a sep patch.
-mike
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