Hello Stefan, -------- Original-Nachricht -------- > Datum: Thu, 07 Aug 2008 13:46:20 +0200 > Von: Stefan Schoenleitner <[EMAIL PROTECTED]> > An: openocd-development@lists.berlios.de > Betreff: [Openocd-development] programming AT91SAM9260 with openocd
> Hi, > > I read the (rather outdated) openocd documentation at > http://openfacts.berlios.de/index-en.phtml?title=Open_On-Chip_Debugger > more than once. > Unfortunately, I still can't program anything with it. The WIKI is completely outdated, but unfortunately none of the pages can be edited. > > * How can I program the boot memory of my AT91SAM9260 at address 0x0 ? What board do you use, or rather what memories does your board have? > > Until now I tried the following: > > > add flash bank in the openocd configuration: > ------------------ > flash bank cfi 0x00000000 0x100000 2 2 0 > ------------------ That will only work if you have NOR flash connected to the static memory controller. > I'm not sure if the CFI driver is correct. Anyway, it did not work. > Since the AT91SAM9 is similar to the AT91SAM7 I also tried the following > ------------------ > flash bank at91sam7 0 0 0 0 0 > ------------------ > with no success as well. AFAIK there's no internal flash in the AT91SAM9. > > I also tried writing to the address with no flash bank configured which > seemed to work at first. > However, after device reset (by pressing the reset button on the board) > all changes are gone and the overwritten memory region is as it was > before the writing. Looks like you had the internal SRAM mapped to 0x0 at that point. Check the processors user's manual for information about its internal memories and mappings. > Also, writing to the connected NAND flash doesn't work. > I added a flash bank for it: > ------------------ > flash bank cfi 0x4000000 0x10000000 2 2 0 > ------------------ CFI (and the whole "flash" subsystem) is for NOR flash. NAND flash has completely different characteristics, e.g. it isn't memory mapped. > I'm using the current svn version "Open On-Chip Debugger 1.0 > (2008-08-08-18:57) svn:895". > > Is there any openocd documentation that is not outdated ? > I've been trying to use openocd with my AT91SAM9260 board for two days > now. > Although I can connect to the board now, dump memory, halt and resume > the cpu, programming and resetting the cpu still does not work. You'll need a much lower JTAG frequency for reliable reset-halt operation with the AT91SAM9. My config file uses jtag_speed 1400. Only after the bootloader initialized everything, I switch to jtag_speed 2. > ft2232_layout "jtagkey" seems wrong, too. IIRC there's a layout specifically for the Olimex JTAG interface. > * Should I use an older svn revision ? > > * Is there any other ARM SAM9 compatible programmer that works under linux > ? > > * What are your suggestions with the at91sam9 controllers ? > > > I would really appreciate any help that brings me forward. > > sincerly, > stefan Regards, Dominic -- -- Dominic Rath <[EMAIL PROTECTED]> _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
