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fix: raise PMP faults for MMU-off accesses #75

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fix: raise PMP faults for MMU-off accesses #75

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6 changes: 2 additions & 4 deletions C910_RTL_FACTORY/gen_rtl/mmu/rtl/ct_mmu_dutlb_read.v
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Original file line number Diff line number Diff line change
Expand Up @@ -491,10 +491,10 @@ assign mmu_lsu_page_fault_x = dutlb_page_fault && !dutlb_off_hit;
assign mmu_lsu_access_fault_x = jtlb_acc_fault_flop
|| !pmp_mmu_flg_x[0] && (pmp_read_type || dutlb_ori_read_x)
&& !(cp0_mach_mode && !pmp_mmu_flg_x[3]) // L-bit for M-Mode
&& pmp_flg_vld
&& (pmp_flg_vld || dutlb_off_hit && lsu_mmu_va_vld_x)
|| !pmp_mmu_flg_x[1] && !pmp_read_type
&& !(cp0_mach_mode && !pmp_mmu_flg_x[3]) // L-bit for M-Mode
&& pmp_flg_vld;
&& (pmp_flg_vld || dutlb_off_hit && lsu_mmu_va_vld_x);
//assign mmu_lsu_access_fault_short_x = jtlb_acc_fault_flop || !pmp_mmu_flg_x[0]
// || !pmp_mmu_flg_x[1];
assign dutlb_acc_flt_x = jtlb_acc_fault_flop;
Expand Down Expand Up @@ -777,5 +777,3 @@ assign mmu_sysmap_pa_x[PPN_WIDTH-1:0] = lsu_mmu_va_x[VPN_WIDTH+12:12];

// &ModuleEnd; @337
endmodule