Sims error Code C

Hung Tran Quoc

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Apr 17, 2024, 11:13:38 AMApr 17

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Hi there,

I'm running a sims OpenPiton test file code C to read data from a text file, but encountering an error. imgpsh_fullsize_anim (1).png

The error is in the "fopen" function. I don't know how to fix this error because it have library of toolchains.

Jonathan Balkind

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Apr 17, 2024, 11:15:31 AMApr 17

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The simulation is a bare metal environment. There is no filesystem so there is no fopen. BlackParrot has a creative approach to this issue known as dramfs (https://github.com/black-parrot-sdk/black-parrot-sdk) which you could consider adopting but I likely wouldn't be able to provide any meaningful support in pursuing that.

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Quoocs Huwng

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Apr 22, 2024, 3:27:29 PMApr 22

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I have a question that the noc data is being transmitted in 64 bits while my IP transmits data in 32 bits. I think they won't be compatible with each other. So can I change the noc data width to 32 bits?

Vào lúc 22:15:31 UTC+7 ngày Thứ Tư, 17 tháng 4, 2024, jbal...@ucsb.edu đã viết:

Jonathan Balkind

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Apr 23, 2024, 12:02:54 AMApr 23

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The noc width cannot be easily changed. However our AXI-Lite bridge can easily be used with 32b devices. If this is a peripheral device then it should be connectable similarly without issue.

Thanks,

Jon

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Quoocs Huwng

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Apr 25, 2024, 5:51:22 PMApr 25

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Thank Jon,

And Could you provide the memory map of all available components in OpenPiton or have datasheets for this SoC?

Vào lúc 11:02:54 UTC+7 ngày Thứ Ba, 23 tháng 4, 2024, jbal...@ucsb.edu đã viết:

Jonathan Balkind

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Apr 29, 2024, 6:23:00 PMApr 29

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You can find the information you are looking for in riscvlib.py, devices_ariane.xml, and the output .dts file. It depends on the configuration of the system that you choose so I cannot give you a single answer.

Thanks,

Jon

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