[U-Boot] boot-up time optimization. Where to start?

[Detlev Zundel <dzu@denx.de>]

Hi Simon,

[...]

> I have a patch which displays boot time in microseconds if it is of
> interest to anyone:
>
> Timer summary in microseconds:
>        Mark    Elapsed  Stage
>           0          0  awake
>     193,298    193,298  usb_start
>   1,342,411  1,149,113  eth_start
>   3,767,039  2,424,628  bootp_start
>   3,790,121     23,082  bootp_stop
>   3,790,293        172  tftp start
>   4,761,459    971,166  tftp done
>   4,761,489         30  bootm_start
>   4,892,145    130,656  start_kernel

Of course we are interested, please show us the code.  Such code, even
if it does not get into mainline can be a good starter for other people
benchmarking their port.

Thanks
  Detlev

-- 
"One of my most productive days was throwing away 1000 lines of code."
  - Ken Thompson.
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