[U-Boot] U-Boot Crashes with Dumps

[anupbehare at gmail.com]

Hi all!

I begin use U-Boot at my custom board based on ppc440x5.

Here is Mem Info that we are using on board:

16MB Nor flash with base address 0xfc000000
512MB DDR with base addr 0x00000000
256kb ISRAM with base addr 0xc0000000

TEXT_BASE 0xfffc0000

Tlb entries for board is:
tlbentry( 0xff000000, SZ_16M, 0xff000000, 0, AC_R|AC_X|AC_W) ------Flash
tlbentry( 0xc0000000, SZ_256K, 0xc0000000, 0, AC_R|AC_W|AC_X|SA_I)  
------ISRAM
tlbentry( 0x00000000, SZ_256M, 0x00000000, 0, AC_R|AC_W|AC_X|SA_I|SA_G)  
------DDR
tlbentry( 0x10000000, SZ_256M, 0x10000000, 0, AC_R|AC_W|AC_X|SA_I|SA_G)  
------DDR


I am trying to get a clean build of U-Boot to run on the PPC440x5 based  
customized board. I have the latest versions U-Boot.
The system executes through board_init_f( ) without any problems, and gets  
into board_init_r( ). The console output is as follows:

512 MB (ECC is ON, 400 MHz, CL 7)
Top of RAM usable for U-Boot at: 20000000
Reserving 170k for U-Boot at: 1ffd5000
Reserving 1040k for malloc() at: 1fed1000
Reserving 128 Bytes for Board Info at: 1fed0f80
Reserving 64 Bytes for Global Data at: 1fed0f40
Stack Pointer at: 1fed0f28
New Stack Pointer is: 1fed0f28
relocate addr_sp = 1fed0f28, id = 1fed0f40, addr = 1ffd5000

Now running in RAM - U-Boot at: 1ffd5000

NIP: 1FFD7764 XER: 00000000 LR: 1FFD7764 REGS: 1fed0e20 TRAP: 0200 DEAR:  
FFED0F18
MSR: 00021000 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 00

GPR00: 1FFD7338 1FED0F10 1FED0F40 1FFD5000 1FFD88E0 00000000 00000000  
1FFD7764
GPR08: 00000600 00002098 00000030 2FAF07FE FFFFFFFF C000B330 20002A00  
20015000
GPR16: 00000000 00000000 00000000 00000000 48FF2422 00000610 00002C20  
00000000
GPR24: 00000000 1FED0F40 1FFD5000 1FED5000 1FED0F80 1FFD5000 20002B10  
1FED1000
Call backtrace:
1FFD88D8 1FFD76D8 00000000
machine check



Here I am trying to use backtrace to debug but system is waiting at  
folloing console o/p.

[root at u-boot]$ cp ../../11dec_rec/u-boot/backtrace .
[root at u-boot]$backtrace System.map 0xdffeb000
Reading symbols from System.map
Using Address Offset 0xdffeb000


Please help me on this.


Regards,
Anup B.