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Altera_Forum's avatar
Altera_Forum
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8 years ago

Disable FPU on Arria10 SoC FPGA

Hi Support, We need to disable FPU on Arria 10 SoC FPGA. Please let us know the procedure how to disable FPU. Regards, Karthik.
Altera_Forum's avatar
Altera_Forum
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8 years ago

--- Quote Start ---

Karthik,

all you need to do is to clear bit# 30 of the FPEXC register:

fmrx r0, FPEXC

bic r0, r0,# 0x40000000

fmxr FPEXC, r0

--- Quote End ---

Hi,

I ran the above assembly code(assembler) and generated binary from object file, when i try to execute binary it shows segmentation fault.

please let me know how to check FPU is disabled/not after running the assembly code.