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Altera_Forum's avatar
Altera_Forum
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16 years ago

Linux, U-Boot, and Root File Systems

I'm working with a Nios II design with an MMU, on a Nios II Development Kit, Cyclone II Edition board (EP2C35). I'm trying to figure out how to get to a system that boots with some sort of root...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

The hardware is a standard Altera Development Kit, http://www.altera.com/products/devkits/altera/kit-nios-2c35.html

The Quartus design is probably a slightly tweaked version of the standard design that comes with that board. I directed the hardware team to the Linux for Nios II Wiki page, section "Create a Nios II design with MMU", and asked them to modify the design accordingly.

I don't think I will be able to post the FPGA design. I'll check tomorrow.

Is there any more specific information I could provide to help figure this out?

Or, do you have any recommendations on where I should be looking? Or what questions I should be asking the hardware team?

Something that looked weird to me:

As you had recommended, I copied images/rootfs.jffs2 to the flash, at the start of the area I allocated to jffs2, 0x00200000. I'm concerned that Linux is mucking around with lower addresses (The "CLEANMARKER" references in the output), where I have stored U-Boot and the kernel. Is this ok?