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Added instruction bus address mapping to branch predictor

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Signed-off-by: Eric Matthews <ematthew@sfu.ca>
This commit is contained in:
Eric Matthews 2022-05-11 13:10:53 -04:00
parent fb292ecd54
commit 8c1059f395
1 changed files with 11 additions and 1 deletions
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12
core/branch_predictor.sv
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@ -42,12 +42,22 @@ module branch_predictor
//support is not enabled
localparam longint CACHE_RANGE = 64'(CONFIG.ICACHE_ADDR.H) - 64'(CONFIG.ICACHE_ADDR.L) + 1;
localparam longint SCRATCH_RANGE = 64'(CONFIG.ILOCAL_MEM_ADDR.H) - 64'(CONFIG.ILOCAL_MEM_ADDR.L) + 1;
localparam longint BUS_RANGE = 64'(CONFIG.IBUS_ADDR.H) - 64'(CONFIG.IBUS_ADDR.L) + 1;
function int get_memory_width();
if(CONFIG.INCLUDE_S_MODE)
return 32;
else if (CONFIG.INCLUDE_ICACHE && CACHE_RANGE > SCRATCH_RANGE)
else if (CONFIG.INCLUDE_ICACHE && (
(CONFIG.INCLUDE_ILOCAL_MEM && CACHE_RANGE > SCRATCH_RANGE) ||
(CONFIG.INCLUDE_IBUS && CACHE_RANGE > BUS_RANGE) ||
(!CONFIG.INCLUDE_ILOCAL_MEM && !CONFIG.INCLUDE_IBUS))
)
return $clog2(CACHE_RANGE);
else if (CONFIG.INCLUDE_IBUS && (
(CONFIG.INCLUDE_ILOCAL_MEM && BUS_RANGE > SCRATCH_RANGE) ||
(!CONFIG.INCLUDE_ILOCAL_MEM))
)
return $clog2(BUS_RANGE);
else
return $clog2(SCRATCH_RANGE);
endfunction