Re: Why calling kernelInit two times.

On Jul 18, 12:48 am, Nabendu <nbma...@xxxxxxxxx> wrote:
On Jul 18, 12:06 am, gvarndell <gvarnd...@xxxxxxxxxxx> wrote:



On Jul 17, 11:24 am, Nabendu <nbma...@xxxxxxxxx> wrote:

On Jul 17, 7:25 pm, gvarndell <gvarnd...@xxxxxxxxxxx> wrote:

On Jul 17, 9:09 am, Nabendu <nbma...@xxxxxxxxx> wrote:

Hi all,

When I was studying boot sequence I found the below abnormality.

There is kernel init call

kernelInit ((FUNCPTR) usrRoot, ROOT_STACK_SIZE, \
(char *) MEM_POOL_START_ADRS,
sysMemTop (), ISR_STACK_SIZE, INT_LOCK_LEVEL); in
usrKernelInit() function in usrkernel.c .

which is called from usrInit() function. but after calling
usrKernelInit(), we again calling kernelInit() from usrInit(). in
bootconfig.c

I wonder why we are calling kernelInit two time..?

Any one know the reason?

I am using vxworks 6.4 ..

Hhhmm, if you had found a third module with a call to kernelInit(),
would you have assumed it was being called 3 times? ;-)
Seriously, it is not being called twice.

HTH,
GV

Logically I understand it should not be called more than once.

GV,Had you ever gone through the code of usrInit() in target\config\all
\bootconfig.c or usrConfig.c
and usrKernelInit() code in target\config\comps\src\usrKernel.c ?

No, never.

(FYI - bootconfig.c or usrConfig.c are copied and modified to BSP
directory any change required in bootloader commads or other things)

Actually, you're right -- kernelInit() is called twice.
Once when the bootrom image executes.
And then again when the ram image is executed.
And, if you reset the target, it's executed 4 times. ;-)

HTH
GV

:D haha really funny, ya, 6 times if i reset 2 times ,,ie n*2 +2 if i
reset n times...????

usrConfig.c is used for vxworks image and bootconfig.c for bootloder/
botrom.some functions are defined as same/almost same in them(usr .

so before giving any command from boot prompt of bootloader
(bootcmdloop) kernelinit called 2 times,
after giving boot command (e.g. @) image is loaded to ram and run
it ,there kernelinit run 2 times

So total no of kernelInit is 4.

Correct me if I'm wrong.


If I really took off on you, someone (someone who otherwise would
never bother) would think me an obnoxious bore and feel really sorry
for you and come to your rescue.
I think I'll just let you think about it for a while.

GV
.

Relevant Pages

  • Re: Why calling kernelInit two times.
    ... usrKernelInit(), we again calling kernelInitfrom usrInit. ... you're right -- kernelInit() is called twice. ... Once when the bootrom image executes. ... after giving boot command image is loaded to ram and run ...
    (comp.os.vxworks)
  • Re: Why calling kernelInit two times.
    ... usrKernelInit(), we again calling kernelInitfrom usrInit(). ... I wonder why we are calling kernelInit two time..? ...
    (comp.os.vxworks)
  • Why calling kernelInit two times.
    ... usrKernelInit(), we again calling kernelInitfrom usrInit(). ... I wonder why we are calling kernelInit two time..? ...
    (comp.os.vxworks)