Hi Tiger,

On Mon, Sep 16, 2013 at 11:09 PM, TigerLiu@viatech.com.cn wrote:

Hi, Simon:

I have some questions about bootstage functions.(common/bootstage.c)

1. mark_bootsage record relocation question

board_init_f() will call mark_bootstage() function to record the elapsed time when system

From power on to board_init_f point.

But after running board_init_f() function, uboot will relocate u-boot code base.

So, the boot stage record “board_init_f” would be abnormal ? !

Because i did not find any code to do relocation operation for boot stage records.

Please see bootstage_relocate().

2. how to understand “start_us” fiedld in bootstage_record struct ?

bootstage_start() function will init bootstage_record->start_us.

But not find which file will call bootstage_start() .

This is used by functions which want to measure accumulated time.

bootstage_start() is called first, then bootstage_accum(). I have a few patches to add this for SPI flash, but have not sent them yet.

Regards, Simon