Debugging SABRESD with JTAG BDI3000

AlanSouza — Tue, 14 Jul 2015 15:48:03 GMT

I was trying to debug a custom board with BDI3000 but I was having issues, so I tried with SABRE but the issues persist.

The state after powering up with BDI attached seems good to me:

IMX6#0>info

Core number : 0

Core state : debug mode (ARM)

Debug entry cause : Debug Request

Current PC : 0x2780ad40

Current CPSR : 0x600001d3 (Supervisor)

Current SPSR : 0xca0c196d

However, I can't correctly read and write from memory.

Example:

IMX6#0>md 0x8a000000 1

8a000000 : 0x00000071 113 q...

IMX6#0>mm 0x8a000000 0x1234abcd 1

IMX6#0>md 0x8a000000 1

8a000000 : 0x00000061 97 a...

IMX6#0>mm 0x8a000000 0x12345678 1

IMX6#0>md 0x8a000000 1

8a000000 : 0x04000071 67108977 q...

Apparently, it is not writing what is expected to. I need to make this process consistent an then load the u-boot into memory.

Does anyone know what is happening? Or maybe have a better configuration file?

I'm using the attached configuration file. Any help would greatly appreciated.

Original Attachment has been moved to: regCortex-A9.def.zip

Original Attachment has been moved to: imx6.cfg.zip

Re: Debugging SABRESD with JTAG BDI3000

Yuri — Wed, 15 Jul 2015 02:05:30 GMT

It is needed to init memory. Please refer to the following

resources about it.

DDR Script Aid tools :

"DDR3 Porting Guide"

Have a great day,

Yuri

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