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Write 0 instead of x for VX_CSR_MPM_RESERVED

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Otherwise it makes verification hard with tools that don't process x's
well.
This commit is contained in:
Hansung Kim
2023-11-27 16:06:16 -08:00
parent f41b50fc07
commit 5e5c625759
1 changed files with 4 additions and 2 deletions
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6
hw/rtl/core/VX_csr_data.sv
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@@ -163,8 +163,10 @@ import VX_fpu_pkg::*;
`VX_CSR_NUM_CORES : read_data_ro_r = 32'(`NUM_CORES * `NUM_CLUSTERS);
`VX_CSR_MCYCLE : read_data_ro_r = 32'(cycles[31:0]);
`VX_CSR_MCYCLE_H : read_data_ro_r = 32'(cycles[`PERF_CTR_BITS-1:32]);
`VX_CSR_MPM_RESERVED : read_data_ro_r = 'x;
`VX_CSR_MPM_RESERVED_H : read_data_ro_r = 'x;
// NOTE(hansung): setting to 'x makes verification with simx hard;
// set to '0 instead
`VX_CSR_MPM_RESERVED : read_data_ro_r = 32'h0;
`VX_CSR_MPM_RESERVED_H : read_data_ro_r = 32'h0;
`VX_CSR_MINSTRET : read_data_ro_r = 32'(commit_csr_if.instret[31:0]);
`VX_CSR_MINSTRET_H : read_data_ro_r = 32'(commit_csr_if.instret[`PERF_CTR_BITS-1:32]);