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Altera_Forum
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16 years ago

Download NIOS_Software from FLASH to SDRAM with Bootloader on On-Chip-Memory

Hi all, i have a problem with downloading a nios-software (c-program) from flash-memory to an sdram with help of a bootloader lies on on-chip-ram general requirements: ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

I'm booting from serial flash device (EPCS). The reset vector points to the epcs_controller which contains a small onchip ram (see attached jpg). In that RAM is the boot copier or bootloader which copies the Nios program from serial flash to the SDRAM. After that that the programm is called by the bootloader.

Your reset vector should point to the bootloader code. Have you the source code of the bootloader? Than you can debug the code and see if the flash content will be copied to the SDRAM.

Jens