Is it possible to erase BAF in MPC5748G device?

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Is it possible to erase BAF in MPC5748G device?

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alexvinchev
Contributor V

Hi, at our side we faced very unusual problem with the MPC5748G devices. When we were working on bootloader for these devices, somehow BAF flash area in 2 of 2 devices involved in testing got vanished (Lauterbach reads 0xFF, device stuck in reset escalation mode after boot, even if valid application is flashed).

Now I have the following questions:

  • How is this possible? We are using SSD to work with MPC5748G flash area.
  • If the above is possible, is it possible to program again this area?

We would like to recover these devices, since replacement will be long and costly, because they are on the target boards, not on EVB.

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lukaszadrapa
NXP TechSupport
NXP TechSupport

Hello Aleksandar,

for some reasons, the BAF is not in ROM but rather in flash. I guess it could be changed in the new silicon version which should be available later this year. So, it's possible that it can be erased.

Attached you will find recovery script for Lauterbach debugger.

Regards,

Lukas

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medhedibasly
Contributor III

Hello,

i'm having the same problem with MPC5748G too, i think that the BAF code area is some how erased, i'm using WinIdea and IC5000 debugger from isystem. 

is there a way to re-write that part of memory. thanks in advance.

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lukaszadrapa
NXP TechSupport
NXP TechSupport

Hello Aleksandar,

for some reasons, the BAF is not in ROM but rather in flash. I guess it could be changed in the new silicon version which should be available later this year. So, it's possible that it can be erased.

Attached you will find recovery script for Lauterbach debugger.

Regards,

Lukas

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新股老菜
Contributor II

Hello

   The Same trouble in MCU MPC5746R,Could you help me?

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medhedibasly
Contributor III

Hello,

try the calypsoBaf file, it should be able to recover your BAF section.

B R,

Hedi.

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alexvinchev
Contributor V

Thank you very much Lukas!

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