Re: [microblaze-uclinux]Kernel Booting hangs after Calibrate Delay Loop...

[John Williams <jwilliams@xxxxxxxxxxxxxx>]

Hi,

Gaurav Agrawal wrote:

> We have been trying to boot petalinux 2.4 kernel on the Spartan-3E 
> starter kit board configured for microblaze. The hardware settings are 
> somewhat modified from the standard kit settings(we do not have a flash, 
> and caching is disabled). The u-boot works fine on it.
>
> However, on compiling the kernel and trying to run it in DDR, we get the 
> following messages:
>
> *Linux version 2.4.32-uc0 (dkyadav@nisha) (gcc version 3.4.1 ( PetaLinux 
> 0.20 Bui
> ld -rc1 050607 )) #5 Mon Aug 20 14:39:01 IST 2007
> On node 0 totalpages: 8192
> zone(0): 8192 pages.
> zone(1): 0 pages.
> zone(2): 0 pages.
> CPU: MICROBLAZE
> Kernel command line: ¸
> Console: xmbserial on UARTLite
> Calibrating delay loop...
> *
> The code hangs after this.

This is invariably a problem with interrupts - the timer interrupt is 
not getting through, and the timer calibration waits forever.

Have you regnerated the auto-config.in file, copied it into the kernel 
tree (use petalinux-copy-autoconfig for this), and then completely 
cleaned and rebuilt your kernel, after making the various hardware changes?

Regards,

John
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