PowerQUICC Processors中的主题 MPC8548 Uboot InstructionTLBError

MPC8548 Uboot InstructionTLBError

systick — Thu, 29 Mar 2018 07:47:06 GMT

Hi all,

I working on Uboot for the MPC8548,

-I built the Uboot with ppc_85xx- toolchain,
-The Entry Point Address of elf file is 0xfffa0000,
- My Memory map is ;

After the install program to board, program stay at 0xfffff290 address, I did comparison with elf file, its InstructionTLBError.

How can I fix this, I need suggestions.

I look forward to your replies.

Your Sincerely.

Re: MPC8548 Uboot InstructionTLBError

alexander_yakov — Tue, 03 Apr 2018 06:45:42 GMT

Instruction TLB error means - "Virtual addresses associated with an instruction fetch do not match any valid TLB entry."

That is - an attempt to fetch some instruction from some address caused this error, because this particular address is not configured in TLB. Typically this means either TLB configuration issue or attempt to execute code from some invalid location.

When TLB error interrupt is taken, register SRR0 is set to the effective address of the instruction causing the instruction TLB error interrupt.

For more details please look e500 Core Reference Manual, Section 5.7.13 "Instruction TLB Error Interrupt"

Here is a direct link to this document:

https://www.nxp.com/docs/en/reference-manual/E500CORERM.pdf

Have a great day,
Alexander
TIC

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

Re: MPC8548 Uboot InstructionTLBError

systick — Thu, 05 Apr 2018 05:24:28 GMT

Hi Mr.Yakovlev,

Thanks for the reply, I will focus on SRRx registers.