zephyr

History

Dan Kalowsky c02dd34277 Renaming include/nanokernel to include/arch Renaming the directory include/nanokernel to be include/arch, which better reflects the real nature of the directory and the contents inside. Change-Id: I2bc33ebc6715e2f0403227a558279fdf52398ade Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>		2016-02-05 20:14:12 -05:00
..
generic_pc	Kbuild: metrics config dependency resolved	2016-02-05 20:14:08 -05:00
quark	Kbuild: Fix sanity checks for quark	2016-02-05 20:14:08 -05:00
src	Renaming include/nanokernel to include/arch	2016-02-05 20:14:12 -05:00
Makefile	Kbuild: Changing build parameter CONF_OVERLAY to CONF_FILE	2016-02-05 20:14:09 -05:00
prj.vpf	First commit	2015-04-10 16:44:37 -07:00
README.txt	Remove references to Simics from README.txt files	2016-02-05 20:13:48 -05:00

README.txt

Title:  BootTime

Description:

BootTime measures the time:
   a) from system reset to kernel start (crt0.s's __start)
   b) from kernel start to begin of main()
   c) from kernel start to begin of first task
   d) from kernel start to when microkernel's main task goes immediately idle

The project can be built using one of the following three configurations:

best
-------
 - Disables most features
 - Provides best case boot measurement

default
-------
 - Default configuration options
 - Provides typical boot measurement

worst
-------
 - Enables most features.
 - Provides worst case boot measurement

--------------------------------------------------------------------------------

Building and Running Project:

This microkernel project outputs to the console.  It can be built and executed
on QEMU in three possibile configurations as follows:

    make pristine
    make BOOTTIME_QUALIFIER=best microkernel.qemu

    make pristine
    make BOOTTIME_QUALIFIER=default microkernel.qemu

    make pristine
    make BOOTTIME_QUALIFIER=worst microkernel.qemu

--------------------------------------------------------------------------------

Sample Output:

tc_start() - Boot Time Measurement
MicroKernel Boot Result: Clock Frequency: 20 MHz
__start       : 377787 cycles, 18889 us
_start->main(): 3915 cycles, 195 us
_start->task  : 5898 cycles, 294 us
_start->idle  : 6399 cycles, 319 us
Boot Time Measurement finished
===================================================================
PASS - bootTimeTask.
===================================================================
VXMICRO PROJECT EXECUTION SUCCESSFUL