TWR-K60N512 OSJTAG stopped

[formlo]

I have been happily developing my prototype on the TWR-K60N512 using IAR Embedded Workbench V6.30 for a few weeks now. Suddenly a few days ago workbench started reporting an error when uploading to the board via the OSJTAG. This is a copy of the IAR debug log:

Thu Feb 09, 2012 21:46:49: Loaded macro file: C:\Program Files\IAR Systems\Embedded Workbench 6.0\arm\config\flashloader\Freescale\FlashK60Xxxx.mac
Thu Feb 09, 2012 21:46:50: Windows NT detected.
Thu Feb 09, 2012 21:46:51: P&E Interface detected - Flash Version 28.02
Thu Feb 09, 2012 21:46:52: Device is KINETIS.
Thu Feb 09, 2012 21:46:52: Mode is In-Circuit Debug.
Thu Feb 09, 2012 21:46:52: CPU reset by debugger.
Thu Feb 09, 2012 21:46:52: 
Thu Feb 09, 2012 21:46:52: Software reset was performed
Thu Feb 09, 2012 21:46:52: ----- Prepare hardware for Flashloader -----
Thu Feb 09, 2012 21:46:53: 1536 bytes downloaded and verified (2.53 Kbytes/sec)
Thu Feb 09, 2012 21:46:53: Loaded debugee: C:\Program Files\IAR Systems\Embedded Workbench 6.0\arm\config\flashloader\Freescale\FlashK60Xxxx.out
Thu Feb 09, 2012 21:46:53: Target reset
Thu Feb 09, 2012 21:46:53: The flash loader program reported an error.

 I'm not sure if I have added to the problem, but I have reloaded the OSJTAG firmware using the P&E utlity and the Windows drivers, but still no joy. My prototype deadline is looming !!! Any ideas.

Allan

[Hab]

Any luck with this?

[formlo]

After digging through most of this forum and the K60 reference manual I have discovered that I have screwed up the Ptotection registered and managed to secure most of the chip. There appears to be no way out as I have tried the IAJ-Link unsecure command and the PE Micro utility as well.

My friends at Avnet have helped me out by rushing a replacement board so that I can continue my development.  Thanks Avnet!!

[Muffinman]

Checked the flash protection area and try to unlock it in a RAM based project. It will work after your trying, it is not anything that will lock the chip forever.

[iafg]

The reason flash writing is locked maybe caused by overwriting this protected section of memory:

define block CFMPROTROM with size = 20 { section .cfmconfig };

define block FLASHX_POOL with alignment = __FLASHX_SECT_SIZE { section .flashx };

define block TEXTSECTION with alignment = 4 { section .text };

keep { section .cfmconfig };

keep { section .flashx };

in the icf file, there was a 20 words of CFMPROTROM reserved for flash protection.

For whatever reason, these positions were written over (wrong) and locked the flash. So out board could not be programed.

Since a RAM based program can still be downloaded and run, we tried to modify the registers and unlock the protection. I'm not exactly 100% sure what we dit but the chip is now recovered.

I want to look into this a bit more to understand what is going on..

[mohwaqas12]

Hey  , i think i also have the same problem . i locked my flash and now whenever i program it says flash loader reported an error. Could someone please tell , how can we unlock it and make it working?