[U-Boot-Users] DataTLBError with MPC8540

[Armand Ciejak]

I'm working on porting u-boot 1.1.2 for a Metrowerks eval board.
I have modified the MPC8540ADS.h to make it compatible with the board.
I removed the RapidIO initialisation in init.S since I don't use it.

Whatever I try to do the CPU enter the DataTLBError exception:
-> If I set a breakpoint (no matter where)
-> If I step through the code


Here is a "typical" session:

BDI>info
     Target CPU        : MPC8560/8540 Rev.2
     Target state      : halted
     Debug entry cause : COP halt
     Current PC        : 0xfffffffc
     Current CR        : 0x00000000
     Current MSR       : 0x02000200
     Current LR        : 0x00000000
     Current CCSRBAR   : 0xff700000

gdb>go
BDI>info
     Target CPU        : MPC8560/8540 Rev.2
     Target state      : running
BDI>halt
     Target CPU        : MPC8560/8540 Rev.2
     Target state      : halted
     Debug entry cause : COP halt
     Current PC        : 0xfff81400
     Current CR        : 0x20000000
     Current MSR       : 0x00001000
     Current LR        : 0xfffff218
     Current CCSRBAR   : 0xe0000000

dear: 0x000211a8  135592
srr0: 0xfff81410  -519152 -> I know that this is not the primary source 
of the DataTLBError, but I didn't find a way to stop at the first exception.
srr1: 0x00001000  4096
esr : 0x00800000  8388608
mas0: 0x00000001  1
mas1: 0x80000000  -2147483648
mas2: 0x00021000  135168
mas3: 0x00000000  0

TLB0 valid entries:
IDX  PID      EPN  SIZE V TS         RPN U0-U3 WIMGE UUUSSS
   0 : 00 ff700000   4KB V  0 -> ff700000  0000 -I-G- ---RWX
  16 : 00 e4010000   4KB V  0 -> e4010000  0000 ----- ---RWX
  17 : 00 e4011000   4KB V  0 -> e4011000  0000 ----- ---RWX
  18 : 00 e4012000   4KB V  0 -> e4012000  0000 ----- ---RWX
  19 : 00 e4013000   4KB V  0 -> e4013000  0000 ----- ---RWX

TLB1 valid entries:
IDX  PID      EPN  SIZE V TS         RPN U0-U3 WIMGE UUUSSS
   0 : 00 ff000000  16MB V  0 -> ff000000  0000 -I-G- ---RWX -> Flash
   1 : 00 80000000 256MB V  0 -> 80000000  0000 -I-G- ---RWX -> PCI 1/2
   2 : 00 90000000 256MB V  0 -> 90000000  0000 -I-G- ---RWX -> PCI 2/2
   5 : 00 e0000000  64MB V  0 -> e0000000  0000 -I-G- ---RWX -> CCSRBAR
   6 : 00 f0000000  64MB V  0 -> f0000000  0000 ----- ---RWX -> LBC_SDRAM
   7 : 00 f8000000  16KB V  0 -> f8000000  0000 -I-G- ---RWX -> BCSR

Environment:
- Board: Metrowerks board with a MPC8540 CPU.
- U-boot version: 1.1.2
- Toolchain: ELDK3.1
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