Control not branching to the instruction present at resetvec i.e 0xfffffffc

ravi.rao at ravi.rao at
Sat Jan 5 07:58:08 EST 2008

Hi All,
    We have a custom target board based on PPC-EP405. We just got the 
board from the hardware team .I connected the board to BDI200 and powered 
it on. 
The control came to the resetvec address which is 0xfffffffc. I was able 
to read and write to flash. So I erased the flash and burnt the bootloader 
into flash from 0xfffc0000.
I verified that the instruction at 0xfffffffc is 4bfc2104 whicis actually 
a branch to 0xfffc2100. Also a memory dump of 0xfffc2100 shows the correct 
code. This proved that
the uboot bootloader was burnt properly.
Now when I reset the board the control never reaches 0xfffc2100 i.e for 
some reason the code at the resetvec is not getting executed. Any help or 
pointers to resolve this is greatly appreciated.
Ravishankar Govindarao
RFL Electronics Inc.
E-mail : Ravi.Rao at
Voice: 973.334.3100 Ext. 233
Fax: 973.334.3863
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