Measuring the Bootloader time

[MRAMA]

How do i measure the time taken up by the controller to boot from the instant it is powered ON.
what is needed to measure it, and how to measure it.
can i seperately measure bootloder, startup code execution time?

 

[boldstone]

Please tell what is your platform? FPGA, uC, PC,... the solution will be vary for each contex.
in the FPGA, you can add a timer and read it at exit point of bootloader.
in the uC, first initialize timer then start bootloader. then at the exit point of bootloader read it. the start up time of uC is constant that mentioned in the datasheet, you should add this time to timer time to have time from power on.

another considration is exactly the powered on or when it was stable!

 

[MRAMA]

I am using atmel89c52 controller. i want to design a system where i want to make a detailed specification of bootloader execution, startup code and other timing execution information..
I went through the data sheet but did not get much help.