Nios V, Max10, N25Q512A QSPI, XIP - Nios V, Max10, N25Q512A QSPI, XIP
Hello all. I have this Max10 Dev Kit , it has 512Mbit N25Q512A QSPI flash. I have a Nios V/m processor, and if I execute out of on-chip memory everything works fine. I'd like to try Execute in place (XIP). In Platform Designer I'm using the "Generic Serial Flash Interface Intel FPGA IP" component. In the Nios V/m I have my reset vector pointing to "external_flash.avl_mem", offset is zero. In the bsp-editor my .reset and .text are pointed at external_flash. I convert app.elf to app.hex with: elf2flash --input=app.elf --output=flash.srec --reset=0 --base=0 --end=0x3ffffff riscv32-unknown-elf-objcopy --input-target srec --output-target ihex flash.srec app.hex Then I use "Convert Programming File" to convert app.hex to app.pof (using device CFI_512Mb). app.pof only contains the app.hex, I remove the "SOF Data" page, and Add Hex Data. I use the "Parallel Flash Loader ii" to write app.pof to QSPI_Flash. Then I reflash the Max10 with my nios.pof, but nothing runs. Is this supported? Am I doing something wrong? Thanks for your time.
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Re: Nios V, Max10, N25Q512A QSPI, XIP
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Re: Nios V, Max10, N25Q512A QSPI, XIP
Yay! That works! Reading the N25Q manual I could have sworn the default would be 3-byte addressing. I have Feature Digit 8 which notes: "Enter 4-byte address mode and exit 4-byte address mode supported." Feature Digit 7 (which I don't have) notes: "4-byte addressing mode is the default at power-up" Oh well, it works now. Thanks for the help! -Andy
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Re: Nios V, Max10, N25Q512A QSPI, XIP
Have you tried changing the addressing mode to 4 byte addressing? The default is 3-byte and is configured through the Control Register (0x0) of the IP. It could be that the 512mb memory requires more than 3-bytes to access.
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Re: Nios V, Max10, N25Q512A QSPI, XIP
Yes, supported for all control-block based devices, e.g. MAX10 according to Processor Design Manual.
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Re: Nios V, Max10, N25Q512A QSPI, XIP
Is execute in place supported for NIOS V on the Max 10?
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Re: Nios V, Max10, N25Q512A QSPI, XIP
Ah yes, now I remember, I did follow that link, and most of it applies, except for the .jic creation. I am only putting my app.hex in flash (not my fpga bitstream), and .jic didnt seem to have any support for Max10 or my N25Q512A device. So I tried to create a .pof instead, which is not covered in the documentation. -Andy
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Re: Nios V, Max10, N25Q512A QSPI, XIP
Yes, I did set my NiosV reset vector to QSPI Flash. Thanks for the link, I think I've seen it, but I shall review it again just to make sure. -Andy
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Re: Nios V, Max10, N25Q512A QSPI, XIP
Hi, Did you set the NiosV parameter Reset Agent to QSPI Flash? You also can refer to the link below to see if you are following the right procedure. https://www.intel.com/content/www/us/en/docs/programmable/726952/23-4/processor-application-executes-in-place-95056.html Thank you. Regards, Fathulnaim
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Re: Nios V, Max10, N25Q512A QSPI, XIP
Hi, Greetings and welcome to Intel's forum. Please give me some time to check on this issue and will get back to you with the update. Thank you. Regards, Fathulnaim - 2024-01-08
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