Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Can't run code out of flash!

I am trying to run my Nios II code from flash with no success. I can run from the IDE, no problem when program memory is in RAM. I then change the build for flash. The flash programmer works fine ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

I have the .text set to flash and the other 2 set to RAM. This is how I get the code compiled for flash. Then I run the Flash programmer and it works fine - code programmed to flash successfully. When I reset, the "Boot ROM" message comes up, but when I use the function call below (where SOME_ADDR is the address of flash) nothing happens. In addition I try to set the PC to 0x100000 (flash base) directly using the CLI, and then GO - nothing happens.

# define SOME_ADDR 0x ....

void whatever ()

{

void (*foo)(void) = (void (*)(void)) SOME_ADDR;

...

foo(); /* call SOME_ADDR */

}