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Newbie
Newbie
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Registered: ‎04-20-2009

Problems with booting from BPI Flash

Hi,

 

I am facing some problems with booting from BPI Flash.

My infrastructure is like this:

ISE 10.1 with serviece pack 3.

Spartan-3A DSP 1800A Platform

Platform Cable USB II

 

I have followed the instruction explained in xapp1106 and “Using the Intel Parallel NOR Flash on the Spartan-3A DSP 1800A Platform” by AVNET and realized booting a simple application from BPI flash. I use the flash to configure the FPGA with a bootloader that bootloads the application code to the DDR2 and begins executing.

 

However, my current design has to use the BRAM which is also needed by the bootloader code, so I could not use the solution above directly. How can I solve it?

 

I once had an idea to solve the problem by using double BRAM. One BRAM is used for bootloader code, the other one for my design. When doing this, I found that I had to know the address of all the sections in the flash because the “memcpy” function used in bootloader code needs the address to copy some sections from flash to BRAM and others from flash to DDR2. But how can I know the address of every section stored in flash?

 

Please guide me and thanks in advance.

 

Regards,

Richared Fu
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