Exception in U-Boot

["Sanjay Kumar" <sanjay.kumar@xxxxxxxxxx>]

Hi All,
      We are porting U-boot. 2010.03  version for MIPS32 processor (Au1350). Currently we are facing one problem:

When I compile u-boot and program to NOR Flash using bdiGDB through BDI3000 Debugger, I am observing u-boot hangs at exception i.e. at address 0xbfc00570 after reset .

error log is below:


Au1350>ti
    Core number       : 0
    Core state        : Debug Mode
    Debug entry cause : single step
    Current PC        : 0xbfc00400
    Current SR        : 0x00400004
    Current LR  (r31) : 0xbfc0f6e4
    Current SP  (r29) : 0x803fff00
Au1350>go
Au1350>halt
    Core number       : 0
    Core state        : Debug Mode
    Debug entry cause : JTAG break request
    Current PC        : 0xbfc00570
    Current SR        : 0x00400002
    Current LR  (r31) : 0xbfc0f6e4
    Current SP  (r29) : 0x803fff00
Au1350>

After reset address 0xbfc00400, code executes lowlevel_init and subsequently hangs at 0xbfc00570 (RomException).

I'm attaching start.S and lowlevel_init.S files we are using.

Please let me know if am doing anything wrong or missing something.

With Thanks and Regards,
Sanjay Kumar
KPIT Cummins Infosystems Pvt Ltd

Attachment: start.S
Description: start.S

Attachment: lowlevel_init.S
Description: lowlevel_init.S