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Altera_Forum's avatar
Altera_Forum
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20 years ago

Where does the boot loader come from

Hello: I've got a NIOS 2 running out of DRAM. So I plan to put the configuration into epcs (done) and put the application program into a FLASH (also done). I used elf2flash to creat...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

George,

Are you sure you programmed the application code into the EPCS? Your reset vector is pointed to the epcs_controller, right? You ensure that all of the rest of the linker sections point to volatile memory, as well.

Additionally, you can't run code from the EPCS flash and you probably wouldn't want to anyway. (very slow) The epcs_controller has a small onchip memory which is filled with the epcs-flavored bootloader when the system is generated and compiled.

The only caveat I would add to this is that this particular flow will not work for Stratix II and EPCS devices.

Regards,

- slacker