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Disable 'always-on' virtual memory

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Thomas Fleming 2021-03-30 22:49:47 -04:00
parent 56e256baa5
commit 77b8e27205
1 changed files with 1 additions and 3 deletions
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4
wally-pipelined/src/mmu/tlb.sv
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@ -85,7 +85,6 @@ module tlb #(parameter ENTRY_BITS = 3) (
logic SvMode; logic SvMode;
logic Translate; logic Translate;
/*
generate generate
if (`XLEN == 32) begin if (`XLEN == 32) begin
assign SvMode = SATP_REGW[31]; // *** change to an enum somehow? assign SvMode = SATP_REGW[31]; // *** change to an enum somehow?
@ -93,10 +92,9 @@ module tlb #(parameter ENTRY_BITS = 3) (
assign SvMode = SATP_REGW[63]; // currently just a boolean whether translation enabled assign SvMode = SATP_REGW[63]; // currently just a boolean whether translation enabled
end end
endgenerate endgenerate
*/
// *** Currently fake virtual memory being on for testing purposes // *** Currently fake virtual memory being on for testing purposes
// *** DO NOT ENABLE UNLESS TESTING // *** DO NOT ENABLE UNLESS TESTING
assign SvMode = 1; // assign SvMode = 1;
assign Translate = SvMode & (PrivilegeModeW != `M_MODE); assign Translate = SvMode & (PrivilegeModeW != `M_MODE);