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Check VLEN against the minimum VRF address stride #484

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Check VLEN against the minimum VRF address stride #484

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5 changes: 5 additions & 0 deletions hardware/src/ara.sv
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Expand Up @@ -681,4 +681,9 @@ module ara import ara_pkg::*; #(
if (VLEN != 2**$clog2(VLEN))
$error("[ara] The vector length must be a power of two.");

// Each vector register occupies vlenb / NrLanes / 8 addresses per lane, where
// the 8 is the lane datapath width in bytes. That stride must be non-zero.
if (VLEN < 64 * NrLanes)
$error("[ara] VLEN must be greater than or equal to 64 * NrLanes.");

endmodule : ara