*
*Home|Chinese|Japanese*About ARM|Forums|Events|News|Employment|Contact Us|Investors*
dotted rule
*ARM - the architecture for the digital worldARM - the architecture for the digital world
search
*
*
***
*MARKETS:PRODUCTS & SOLUTIONS:CONNECTED COMMUNITY:TECHNICAL SUPPORT:DOCUMENTATION*
*
technical support
*Home > Technical Support > FAQs > Development Tool FAQs > Why does RVD fail to program the first 256KB of NOR flash correctly ...
*
****
*.Technical Support
*
*
*>>Home Page*
*
*.Obtaining Support*
*
*.FAQs*
*
**Development Tool FAQs*
**IP FAQs*
**Embedded Software FAQs*
**Artisan Physical IP FAQs (Login Required)*
*
*.Downloads*
*
*.Documentation*
*
*.Training*
*
*.Where To Buy*
*
*.Keil MCU Tools*
*
*.What's New*
*
*.ARM Newsgroups*
*
*.Active Assist On-site Services*
*
*
*
technical support FAQsask ARM*
*

Technical Support Search
*     (Advanced Search)
  FAQs   Documentation   Downloads   Forums

*

 
downarrowWhy does RVD fail to program the first 256KB of NOR flash correctly on my PB926 ?
Applies to: PB926EJ-S, RVD Debug, RealView Developer Suite (RVDS) 2.1, RealView Developer Suite (RVDS) 2.2, RealView Development Suite (RVDS) 3.0, RealView Development Suite (RVDS) 3.1, Versatile

Certain PB926 boards were shipped with different flash parts than are catered for by RVD's built-in flash programming utility.

New BCD and FME (Flash MEthod) files for these PB926 boards are contained in the attached zip, allowing successful flash programming from RVD.

If you see 64KB areas in the first 256KB of NOR flash (0x34000000) being left as 0xffffffff (erased) after writing within the first 256KB, then this FAQ may fix that issue.

You should only use these new files if you have flash part 28F256K3C.  You will be able to see '256K3C' on components U4 and U5 if you have this part.  See the photos below to locate this part.

PB926 highlighting 256K3C

Zoom in on 256K3C flash chip

The files accompanying this FAQ will add a new 'BoardChip name' to RVD - 'VPB926EJ-S_K3C'.  The original BoardChip name, 'VPB926EJ-S' will still exist, allowing you to work with boards with both types of flash.

To install:
 - copy the file in the etc folder to <installation path>\RVD\Core\<version>\<build>\<platform>\etc (e.g. C:\Program Files\ARM\RVD\Core\3.1\1003\win_32-pentium\etc)

 - copy the files in the VersatilePB926EJ-S folder to <installation path>\RVD\Flash\<version>\<build>\<platform>\VersatilePB926EJ-S (e.g. C:\Program Files\ARM\RVD\Flash\3.1\4\windows\VersatilePB926EJ-S)

As well as the required FME (Flash MEthod) file for flash programming, this zip includes updated sources and a makefile so that you can build the fme yourself if you prefer (or if you want to modify the fme).

Full instructions are contained in Readme.txt within the attached zip.

arrowsorange Download reference source code

Further Information

The existing FME (Flash MEthod) file expects a flash chip that has 4 64KB parameter blocks at the beginning of its address range, followed by 255 256KB main blocks.  The 28F256K3C part has 256 256KB main blocks with no parameter blocks.  Programming within the first 256KB of the 28F256K3C part with the original FME file results in all 64KB sections of the 256KB other than the last section to be erased.  e.g. writing to the entire first 192KB will result in the first 128KB and the last (4th) 64KB being left as 0xffffffff, with the 3rd 64KB being written correctly.






back to top

*
**
*4 dots*Other ARM Websites
*
shadow *LEGAL STATEMENTshadow