Hello,
I'm new to firmware n all, so my problem might sound naive, but i need help :)
I'm using a SAM9261 EK board, i've compiled one bootloader (just added some added debug msgs to AT91 bootstrap). I flashed it at 0X00 on dataflash & it boots fine, with all the debug messages.
But now when i put basic-lcd-project.bin (generated using sample examples in IAR) at 0X8400 , this app/code does not bootup.
At serial console all I can see is bootstrap being loaded.

I am able to run "DEMO_linux4sam-angstrom-at91sam9261ek" perfectly, so no hardware issues, i guess.

Is the offset which i am using correct?
Is the code compiled by IAR a valid code to be flashed?
While going thr docs / posts, i read abt some environment variables, is it relevant to this case.

This is a part of the bootloader that i'm using
/* ******************************************************************* */
/* BootStrap Settings */
/* */
/* ******************************************************************* */
#define AT91C_SPI_PCS_DATAFLASH AT91C_SPI_PCS0_DATAFLASH /* Boot on SPI NCS0 */

#define IMG_ADDRESS 0x8400 /* Image Address in DataFlash */
#define IMG_SIZE 0x33900 /* Image Size in DataFlash */

#define MACH_TYPE 0x350 /* AT91SAM9261-EK */
#define JUMP_ADDR 0x23F00000 /* Final Jump Address */



Thanks.

You need to ensure that IAR is compiling code for the 0x23F00000 execution address.

You should be able to confirm this either through the GUI, or by looking at a map or scatter file for the code you have generated. If it isn't you need to point the "ROM/CODE" portion at 0x23F00000, and the RAM/DATA portions at the SRAM or 0x23E00000 in SDRAM for example.

Your SDRAM spans from 0x20000000 to 0x24000000-1, assuming 64MB.

Keil has example projects with SDRAM initialization that allows you to inject code directly into SDRAM with a SAM-ICE/J-LINK and execute/debug it. I suspect IAR has similar example, but you'll have to look.

To add to the below mentioned problem...
I'm using SAM-ICE now, compiled the "Basic LCD Project", then used the "Download & Debug" option in the IAR tool.
The tool shows some error in the "board_cstartup_iar.s" file.. but when i press run again, the code is executed.
The line where error is flagged,


/* Set pc to actual code location (i.e. not in remap zone) */
LDR pc, =label

Thanks.