| // Copyright lowRISC contributors. |
| // Licensed under the Apache License, Version 2.0, see LICENSE for details. |
| // SPDX-License-Identifier: Apache-2.0 |
| // |
| // Register Top module auto-generated by `reggen` |
| |
| `include "prim_assert.sv" |
| |
| module otbn_reg_top ( |
| input clk_i, |
| input rst_ni, |
| input tlul_pkg::tl_h2d_t tl_i, |
| output tlul_pkg::tl_d2h_t tl_o, |
| |
| // Output port for window |
| output tlul_pkg::tl_h2d_t tl_win_o [2], |
| input tlul_pkg::tl_d2h_t tl_win_i [2], |
| |
| // To HW |
| output otbn_reg_pkg::otbn_reg2hw_t reg2hw, // Write |
| input otbn_reg_pkg::otbn_hw2reg_t hw2reg, // Read |
| |
| // Integrity check errors |
| output logic intg_err_o, |
| |
| // Config |
| input devmode_i // If 1, explicit error return for unmapped register access |
| ); |
| |
| import otbn_reg_pkg::* ; |
| |
| localparam int AW = 16; |
| localparam int DW = 32; |
| localparam int DBW = DW/8; // Byte Width |
| |
| // register signals |
| logic reg_we; |
| logic reg_re; |
| logic [AW-1:0] reg_addr; |
| logic [DW-1:0] reg_wdata; |
| logic [DBW-1:0] reg_be; |
| logic [DW-1:0] reg_rdata; |
| logic reg_error; |
| |
| logic addrmiss, wr_err; |
| |
| logic [DW-1:0] reg_rdata_next; |
| logic reg_busy; |
| |
| tlul_pkg::tl_h2d_t tl_reg_h2d; |
| tlul_pkg::tl_d2h_t tl_reg_d2h; |
| |
| |
| // incoming payload check |
| logic intg_err; |
| tlul_cmd_intg_chk u_chk ( |
| .tl_i(tl_i), |
| .err_o(intg_err) |
| ); |
| |
| logic intg_err_q; |
| always_ff @(posedge clk_i or negedge rst_ni) begin |
| if (!rst_ni) begin |
| intg_err_q <= '0; |
| end else if (intg_err) begin |
| intg_err_q <= 1'b1; |
| end |
| end |
| |
| // integrity error output is permanent and should be used for alert generation |
| // register errors are transactional |
| assign intg_err_o = intg_err_q | intg_err; |
| |
| // outgoing integrity generation |
| tlul_pkg::tl_d2h_t tl_o_pre; |
| tlul_rsp_intg_gen #( |
| .EnableRspIntgGen(1), |
| .EnableDataIntgGen(0) |
| ) u_rsp_intg_gen ( |
| .tl_i(tl_o_pre), |
| .tl_o(tl_o) |
| ); |
| |
| tlul_pkg::tl_h2d_t tl_socket_h2d [3]; |
| tlul_pkg::tl_d2h_t tl_socket_d2h [3]; |
| |
| logic [1:0] reg_steer; |
| |
| // socket_1n connection |
| assign tl_reg_h2d = tl_socket_h2d[2]; |
| assign tl_socket_d2h[2] = tl_reg_d2h; |
| |
| assign tl_win_o[0] = tl_socket_h2d[0]; |
| assign tl_socket_d2h[0] = tl_win_i[0]; |
| assign tl_win_o[1] = tl_socket_h2d[1]; |
| assign tl_socket_d2h[1] = tl_win_i[1]; |
| |
| // Create Socket_1n |
| tlul_socket_1n #( |
| .N (3), |
| .HReqPass (1'b1), |
| .HRspPass (1'b1), |
| .DReqPass ({3{1'b1}}), |
| .DRspPass ({3{1'b1}}), |
| .HReqDepth (4'h0), |
| .HRspDepth (4'h0), |
| .DReqDepth ({3{4'h0}}), |
| .DRspDepth ({3{4'h0}}), |
| .ExplicitErrs (1'b0) |
| ) u_socket ( |
| .clk_i (clk_i), |
| .rst_ni (rst_ni), |
| .tl_h_i (tl_i), |
| .tl_h_o (tl_o_pre), |
| .tl_d_o (tl_socket_h2d), |
| .tl_d_i (tl_socket_d2h), |
| .dev_select_i (reg_steer) |
| ); |
| |
| // Create steering logic |
| always_comb begin |
| reg_steer = 2; // Default set to register |
| |
| // TODO: Can below codes be unique case () inside ? |
| if (tl_i.a_address[AW-1:0] >= 16384 && tl_i.a_address[AW-1:0] < 20480) begin |
| reg_steer = 0; |
| end |
| if (tl_i.a_address[AW-1:0] >= 32768 && tl_i.a_address[AW-1:0] < 34816) begin |
| reg_steer = 1; |
| end |
| if (intg_err) begin |
| reg_steer = 2; |
| end |
| end |
| |
| tlul_adapter_reg #( |
| .RegAw(AW), |
| .RegDw(DW), |
| .EnableDataIntgGen(1) |
| ) u_reg_if ( |
| .clk_i (clk_i), |
| .rst_ni (rst_ni), |
| |
| .tl_i (tl_reg_h2d), |
| .tl_o (tl_reg_d2h), |
| |
| .we_o (reg_we), |
| .re_o (reg_re), |
| .addr_o (reg_addr), |
| .wdata_o (reg_wdata), |
| .be_o (reg_be), |
| .busy_i (reg_busy), |
| .rdata_i (reg_rdata), |
| .error_i (reg_error) |
| ); |
| |
| // cdc oversampling signals |
| |
| assign reg_rdata = reg_rdata_next ; |
| assign reg_error = (devmode_i & addrmiss) | wr_err | intg_err; |
| |
| // Define SW related signals |
| // Format: <reg>_<field>_{wd|we|qs} |
| // or <reg>_{wd|we|qs} if field == 1 or 0 |
| logic intr_state_we; |
| logic intr_state_qs; |
| logic intr_state_wd; |
| logic intr_enable_we; |
| logic intr_enable_qs; |
| logic intr_enable_wd; |
| logic intr_test_we; |
| logic intr_test_wd; |
| logic alert_test_we; |
| logic alert_test_fatal_wd; |
| logic alert_test_recov_wd; |
| logic cmd_we; |
| logic [7:0] cmd_wd; |
| logic ctrl_re; |
| logic ctrl_we; |
| logic ctrl_qs; |
| logic ctrl_wd; |
| logic [7:0] status_qs; |
| logic err_bits_re; |
| logic err_bits_we; |
| logic err_bits_bad_data_addr_qs; |
| logic err_bits_bad_data_addr_wd; |
| logic err_bits_bad_insn_addr_qs; |
| logic err_bits_bad_insn_addr_wd; |
| logic err_bits_call_stack_qs; |
| logic err_bits_call_stack_wd; |
| logic err_bits_illegal_insn_qs; |
| logic err_bits_illegal_insn_wd; |
| logic err_bits_loop_qs; |
| logic err_bits_loop_wd; |
| logic err_bits_key_invalid_qs; |
| logic err_bits_key_invalid_wd; |
| logic err_bits_imem_intg_violation_qs; |
| logic err_bits_imem_intg_violation_wd; |
| logic err_bits_dmem_intg_violation_qs; |
| logic err_bits_dmem_intg_violation_wd; |
| logic err_bits_reg_intg_violation_qs; |
| logic err_bits_reg_intg_violation_wd; |
| logic err_bits_bus_intg_violation_qs; |
| logic err_bits_bus_intg_violation_wd; |
| logic err_bits_bad_internal_state_qs; |
| logic err_bits_bad_internal_state_wd; |
| logic err_bits_illegal_bus_access_qs; |
| logic err_bits_illegal_bus_access_wd; |
| logic err_bits_lifecycle_escalation_qs; |
| logic err_bits_lifecycle_escalation_wd; |
| logic err_bits_fatal_software_qs; |
| logic err_bits_fatal_software_wd; |
| logic fatal_alert_cause_imem_intg_violation_qs; |
| logic fatal_alert_cause_dmem_intg_violation_qs; |
| logic fatal_alert_cause_reg_intg_violation_qs; |
| logic fatal_alert_cause_bus_intg_violation_qs; |
| logic fatal_alert_cause_bad_internal_state_qs; |
| logic fatal_alert_cause_illegal_bus_access_qs; |
| logic fatal_alert_cause_lifecycle_escalation_qs; |
| logic fatal_alert_cause_fatal_software_qs; |
| logic insn_cnt_re; |
| logic insn_cnt_we; |
| logic [31:0] insn_cnt_qs; |
| logic [31:0] insn_cnt_wd; |
| logic load_checksum_re; |
| logic load_checksum_we; |
| logic [31:0] load_checksum_qs; |
| logic [31:0] load_checksum_wd; |
| |
| // Register instances |
| // R[intr_state]: V(False) |
| prim_subreg #( |
| .DW (1), |
| .SwAccess(prim_subreg_pkg::SwAccessW1C), |
| .RESVAL (1'h0) |
| ) u_intr_state ( |
| .clk_i (clk_i), |
| .rst_ni (rst_ni), |
| |
| // from register interface |
| .we (intr_state_we), |
| .wd (intr_state_wd), |
| |
| // from internal hardware |
| .de (hw2reg.intr_state.de), |
| .d (hw2reg.intr_state.d), |
| |
| // to internal hardware |
| .qe (), |
| .q (reg2hw.intr_state.q), |
| |
| // to register interface (read) |
| .qs (intr_state_qs) |
| ); |
| |
| |
| // R[intr_enable]: V(False) |
| prim_subreg #( |
| .DW (1), |
| .SwAccess(prim_subreg_pkg::SwAccessRW), |
| .RESVAL (1'h0) |
| ) u_intr_enable ( |
| .clk_i (clk_i), |
| .rst_ni (rst_ni), |
| |
| // from register interface |
| .we (intr_enable_we), |
| .wd (intr_enable_wd), |
| |
| // from internal hardware |
| .de (1'b0), |
| .d ('0), |
| |
| // to internal hardware |
| .qe (), |
| .q (reg2hw.intr_enable.q), |
| |
| // to register interface (read) |
| .qs (intr_enable_qs) |
| ); |
| |
| |
| // R[intr_test]: V(True) |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_intr_test ( |
| .re (1'b0), |
| .we (intr_test_we), |
| .wd (intr_test_wd), |
| .d ('0), |
| .qre (), |
| .qe (reg2hw.intr_test.qe), |
| .q (reg2hw.intr_test.q), |
| .qs () |
| ); |
| |
| |
| // R[alert_test]: V(True) |
| // F[fatal]: 0:0 |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_alert_test_fatal ( |
| .re (1'b0), |
| .we (alert_test_we), |
| .wd (alert_test_fatal_wd), |
| .d ('0), |
| .qre (), |
| .qe (reg2hw.alert_test.fatal.qe), |
| .q (reg2hw.alert_test.fatal.q), |
| .qs () |
| ); |
| |
| // F[recov]: 1:1 |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_alert_test_recov ( |
| .re (1'b0), |
| .we (alert_test_we), |
| .wd (alert_test_recov_wd), |
| .d ('0), |
| .qre (), |
| .qe (reg2hw.alert_test.recov.qe), |
| .q (reg2hw.alert_test.recov.q), |
| .qs () |
| ); |
| |
| |
| // R[cmd]: V(True) |
| prim_subreg_ext #( |
| .DW (8) |
| ) u_cmd ( |
| .re (1'b0), |
| .we (cmd_we), |
| .wd (cmd_wd), |
| .d ('0), |
| .qre (), |
| .qe (reg2hw.cmd.qe), |
| .q (reg2hw.cmd.q), |
| .qs () |
| ); |
| |
| |
| // R[ctrl]: V(True) |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_ctrl ( |
| .re (ctrl_re), |
| .we (ctrl_we), |
| .wd (ctrl_wd), |
| .d (hw2reg.ctrl.d), |
| .qre (), |
| .qe (reg2hw.ctrl.qe), |
| .q (reg2hw.ctrl.q), |
| .qs (ctrl_qs) |
| ); |
| |
| |
| // R[status]: V(False) |
| prim_subreg #( |
| .DW (8), |
| .SwAccess(prim_subreg_pkg::SwAccessRO), |
| .RESVAL (8'h0) |
| ) u_status ( |
| .clk_i (clk_i), |
| .rst_ni (rst_ni), |
| |
| // from register interface |
| .we (1'b0), |
| .wd ('0), |
| |
| // from internal hardware |
| .de (hw2reg.status.de), |
| .d (hw2reg.status.d), |
| |
| // to internal hardware |
| .qe (), |
| .q (), |
| |
| // to register interface (read) |
| .qs (status_qs) |
| ); |
| |
| |
| // R[err_bits]: V(True) |
| // F[bad_data_addr]: 0:0 |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_err_bits_bad_data_addr ( |
| .re (err_bits_re), |
| .we (err_bits_we), |
| .wd (err_bits_bad_data_addr_wd), |
| .d (hw2reg.err_bits.bad_data_addr.d), |
| .qre (), |
| .qe (reg2hw.err_bits.bad_data_addr.qe), |
| .q (reg2hw.err_bits.bad_data_addr.q), |
| .qs (err_bits_bad_data_addr_qs) |
| ); |
| |
| // F[bad_insn_addr]: 1:1 |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_err_bits_bad_insn_addr ( |
| .re (err_bits_re), |
| .we (err_bits_we), |
| .wd (err_bits_bad_insn_addr_wd), |
| .d (hw2reg.err_bits.bad_insn_addr.d), |
| .qre (), |
| .qe (reg2hw.err_bits.bad_insn_addr.qe), |
| .q (reg2hw.err_bits.bad_insn_addr.q), |
| .qs (err_bits_bad_insn_addr_qs) |
| ); |
| |
| // F[call_stack]: 2:2 |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_err_bits_call_stack ( |
| .re (err_bits_re), |
| .we (err_bits_we), |
| .wd (err_bits_call_stack_wd), |
| .d (hw2reg.err_bits.call_stack.d), |
| .qre (), |
| .qe (reg2hw.err_bits.call_stack.qe), |
| .q (reg2hw.err_bits.call_stack.q), |
| .qs (err_bits_call_stack_qs) |
| ); |
| |
| // F[illegal_insn]: 3:3 |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_err_bits_illegal_insn ( |
| .re (err_bits_re), |
| .we (err_bits_we), |
| .wd (err_bits_illegal_insn_wd), |
| .d (hw2reg.err_bits.illegal_insn.d), |
| .qre (), |
| .qe (reg2hw.err_bits.illegal_insn.qe), |
| .q (reg2hw.err_bits.illegal_insn.q), |
| .qs (err_bits_illegal_insn_qs) |
| ); |
| |
| // F[loop]: 4:4 |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_err_bits_loop ( |
| .re (err_bits_re), |
| .we (err_bits_we), |
| .wd (err_bits_loop_wd), |
| .d (hw2reg.err_bits.loop.d), |
| .qre (), |
| .qe (reg2hw.err_bits.loop.qe), |
| .q (reg2hw.err_bits.loop.q), |
| .qs (err_bits_loop_qs) |
| ); |
| |
| // F[key_invalid]: 5:5 |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_err_bits_key_invalid ( |
| .re (err_bits_re), |
| .we (err_bits_we), |
| .wd (err_bits_key_invalid_wd), |
| .d (hw2reg.err_bits.key_invalid.d), |
| .qre (), |
| .qe (reg2hw.err_bits.key_invalid.qe), |
| .q (reg2hw.err_bits.key_invalid.q), |
| .qs (err_bits_key_invalid_qs) |
| ); |
| |
| // F[imem_intg_violation]: 16:16 |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_err_bits_imem_intg_violation ( |
| .re (err_bits_re), |
| .we (err_bits_we), |
| .wd (err_bits_imem_intg_violation_wd), |
| .d (hw2reg.err_bits.imem_intg_violation.d), |
| .qre (), |
| .qe (reg2hw.err_bits.imem_intg_violation.qe), |
| .q (reg2hw.err_bits.imem_intg_violation.q), |
| .qs (err_bits_imem_intg_violation_qs) |
| ); |
| |
| // F[dmem_intg_violation]: 17:17 |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_err_bits_dmem_intg_violation ( |
| .re (err_bits_re), |
| .we (err_bits_we), |
| .wd (err_bits_dmem_intg_violation_wd), |
| .d (hw2reg.err_bits.dmem_intg_violation.d), |
| .qre (), |
| .qe (reg2hw.err_bits.dmem_intg_violation.qe), |
| .q (reg2hw.err_bits.dmem_intg_violation.q), |
| .qs (err_bits_dmem_intg_violation_qs) |
| ); |
| |
| // F[reg_intg_violation]: 18:18 |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_err_bits_reg_intg_violation ( |
| .re (err_bits_re), |
| .we (err_bits_we), |
| .wd (err_bits_reg_intg_violation_wd), |
| .d (hw2reg.err_bits.reg_intg_violation.d), |
| .qre (), |
| .qe (reg2hw.err_bits.reg_intg_violation.qe), |
| .q (reg2hw.err_bits.reg_intg_violation.q), |
| .qs (err_bits_reg_intg_violation_qs) |
| ); |
| |
| // F[bus_intg_violation]: 19:19 |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_err_bits_bus_intg_violation ( |
| .re (err_bits_re), |
| .we (err_bits_we), |
| .wd (err_bits_bus_intg_violation_wd), |
| .d (hw2reg.err_bits.bus_intg_violation.d), |
| .qre (), |
| .qe (reg2hw.err_bits.bus_intg_violation.qe), |
| .q (reg2hw.err_bits.bus_intg_violation.q), |
| .qs (err_bits_bus_intg_violation_qs) |
| ); |
| |
| // F[bad_internal_state]: 20:20 |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_err_bits_bad_internal_state ( |
| .re (err_bits_re), |
| .we (err_bits_we), |
| .wd (err_bits_bad_internal_state_wd), |
| .d (hw2reg.err_bits.bad_internal_state.d), |
| .qre (), |
| .qe (reg2hw.err_bits.bad_internal_state.qe), |
| .q (reg2hw.err_bits.bad_internal_state.q), |
| .qs (err_bits_bad_internal_state_qs) |
| ); |
| |
| // F[illegal_bus_access]: 21:21 |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_err_bits_illegal_bus_access ( |
| .re (err_bits_re), |
| .we (err_bits_we), |
| .wd (err_bits_illegal_bus_access_wd), |
| .d (hw2reg.err_bits.illegal_bus_access.d), |
| .qre (), |
| .qe (reg2hw.err_bits.illegal_bus_access.qe), |
| .q (reg2hw.err_bits.illegal_bus_access.q), |
| .qs (err_bits_illegal_bus_access_qs) |
| ); |
| |
| // F[lifecycle_escalation]: 22:22 |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_err_bits_lifecycle_escalation ( |
| .re (err_bits_re), |
| .we (err_bits_we), |
| .wd (err_bits_lifecycle_escalation_wd), |
| .d (hw2reg.err_bits.lifecycle_escalation.d), |
| .qre (), |
| .qe (reg2hw.err_bits.lifecycle_escalation.qe), |
| .q (reg2hw.err_bits.lifecycle_escalation.q), |
| .qs (err_bits_lifecycle_escalation_qs) |
| ); |
| |
| // F[fatal_software]: 23:23 |
| prim_subreg_ext #( |
| .DW (1) |
| ) u_err_bits_fatal_software ( |
| .re (err_bits_re), |
| .we (err_bits_we), |
| .wd (err_bits_fatal_software_wd), |
| .d (hw2reg.err_bits.fatal_software.d), |
| .qre (), |
| .qe (reg2hw.err_bits.fatal_software.qe), |
| .q (reg2hw.err_bits.fatal_software.q), |
| .qs (err_bits_fatal_software_qs) |
| ); |
| |
| |
| // R[fatal_alert_cause]: V(False) |
| // F[imem_intg_violation]: 0:0 |
| prim_subreg #( |
| .DW (1), |
| .SwAccess(prim_subreg_pkg::SwAccessRO), |
| .RESVAL (1'h0) |
| ) u_fatal_alert_cause_imem_intg_violation ( |
| .clk_i (clk_i), |
| .rst_ni (rst_ni), |
| |
| // from register interface |
| .we (1'b0), |
| .wd ('0), |
| |
| // from internal hardware |
| .de (hw2reg.fatal_alert_cause.imem_intg_violation.de), |
| .d (hw2reg.fatal_alert_cause.imem_intg_violation.d), |
| |
| // to internal hardware |
| .qe (), |
| .q (), |
| |
| // to register interface (read) |
| .qs (fatal_alert_cause_imem_intg_violation_qs) |
| ); |
| |
| // F[dmem_intg_violation]: 1:1 |
| prim_subreg #( |
| .DW (1), |
| .SwAccess(prim_subreg_pkg::SwAccessRO), |
| .RESVAL (1'h0) |
| ) u_fatal_alert_cause_dmem_intg_violation ( |
| .clk_i (clk_i), |
| .rst_ni (rst_ni), |
| |
| // from register interface |
| .we (1'b0), |
| .wd ('0), |
| |
| // from internal hardware |
| .de (hw2reg.fatal_alert_cause.dmem_intg_violation.de), |
| .d (hw2reg.fatal_alert_cause.dmem_intg_violation.d), |
| |
| // to internal hardware |
| .qe (), |
| .q (), |
| |
| // to register interface (read) |
| .qs (fatal_alert_cause_dmem_intg_violation_qs) |
| ); |
| |
| // F[reg_intg_violation]: 2:2 |
| prim_subreg #( |
| .DW (1), |
| .SwAccess(prim_subreg_pkg::SwAccessRO), |
| .RESVAL (1'h0) |
| ) u_fatal_alert_cause_reg_intg_violation ( |
| .clk_i (clk_i), |
| .rst_ni (rst_ni), |
| |
| // from register interface |
| .we (1'b0), |
| .wd ('0), |
| |
| // from internal hardware |
| .de (hw2reg.fatal_alert_cause.reg_intg_violation.de), |
| .d (hw2reg.fatal_alert_cause.reg_intg_violation.d), |
| |
| // to internal hardware |
| .qe (), |
| .q (), |
| |
| // to register interface (read) |
| .qs (fatal_alert_cause_reg_intg_violation_qs) |
| ); |
| |
| // F[bus_intg_violation]: 3:3 |
| prim_subreg #( |
| .DW (1), |
| .SwAccess(prim_subreg_pkg::SwAccessRO), |
| .RESVAL (1'h0) |
| ) u_fatal_alert_cause_bus_intg_violation ( |
| .clk_i (clk_i), |
| .rst_ni (rst_ni), |
| |
| // from register interface |
| .we (1'b0), |
| .wd ('0), |
| |
| // from internal hardware |
| .de (hw2reg.fatal_alert_cause.bus_intg_violation.de), |
| .d (hw2reg.fatal_alert_cause.bus_intg_violation.d), |
| |
| // to internal hardware |
| .qe (), |
| .q (), |
| |
| // to register interface (read) |
| .qs (fatal_alert_cause_bus_intg_violation_qs) |
| ); |
| |
| // F[bad_internal_state]: 4:4 |
| prim_subreg #( |
| .DW (1), |
| .SwAccess(prim_subreg_pkg::SwAccessRO), |
| .RESVAL (1'h0) |
| ) u_fatal_alert_cause_bad_internal_state ( |
| .clk_i (clk_i), |
| .rst_ni (rst_ni), |
| |
| // from register interface |
| .we (1'b0), |
| .wd ('0), |
| |
| // from internal hardware |
| .de (hw2reg.fatal_alert_cause.bad_internal_state.de), |
| .d (hw2reg.fatal_alert_cause.bad_internal_state.d), |
| |
| // to internal hardware |
| .qe (), |
| .q (), |
| |
| // to register interface (read) |
| .qs (fatal_alert_cause_bad_internal_state_qs) |
| ); |
| |
| // F[illegal_bus_access]: 5:5 |
| prim_subreg #( |
| .DW (1), |
| .SwAccess(prim_subreg_pkg::SwAccessRO), |
| .RESVAL (1'h0) |
| ) u_fatal_alert_cause_illegal_bus_access ( |
| .clk_i (clk_i), |
| .rst_ni (rst_ni), |
| |
| // from register interface |
| .we (1'b0), |
| .wd ('0), |
| |
| // from internal hardware |
| .de (hw2reg.fatal_alert_cause.illegal_bus_access.de), |
| .d (hw2reg.fatal_alert_cause.illegal_bus_access.d), |
| |
| // to internal hardware |
| .qe (), |
| .q (), |
| |
| // to register interface (read) |
| .qs (fatal_alert_cause_illegal_bus_access_qs) |
| ); |
| |
| // F[lifecycle_escalation]: 6:6 |
| prim_subreg #( |
| .DW (1), |
| .SwAccess(prim_subreg_pkg::SwAccessRO), |
| .RESVAL (1'h0) |
| ) u_fatal_alert_cause_lifecycle_escalation ( |
| .clk_i (clk_i), |
| .rst_ni (rst_ni), |
| |
| // from register interface |
| .we (1'b0), |
| .wd ('0), |
| |
| // from internal hardware |
| .de (hw2reg.fatal_alert_cause.lifecycle_escalation.de), |
| .d (hw2reg.fatal_alert_cause.lifecycle_escalation.d), |
| |
| // to internal hardware |
| .qe (), |
| .q (), |
| |
| // to register interface (read) |
| .qs (fatal_alert_cause_lifecycle_escalation_qs) |
| ); |
| |
| // F[fatal_software]: 7:7 |
| prim_subreg #( |
| .DW (1), |
| .SwAccess(prim_subreg_pkg::SwAccessRO), |
| .RESVAL (1'h0) |
| ) u_fatal_alert_cause_fatal_software ( |
| .clk_i (clk_i), |
| .rst_ni (rst_ni), |
| |
| // from register interface |
| .we (1'b0), |
| .wd ('0), |
| |
| // from internal hardware |
| .de (hw2reg.fatal_alert_cause.fatal_software.de), |
| .d (hw2reg.fatal_alert_cause.fatal_software.d), |
| |
| // to internal hardware |
| .qe (), |
| .q (), |
| |
| // to register interface (read) |
| .qs (fatal_alert_cause_fatal_software_qs) |
| ); |
| |
| |
| // R[insn_cnt]: V(True) |
| prim_subreg_ext #( |
| .DW (32) |
| ) u_insn_cnt ( |
| .re (insn_cnt_re), |
| .we (insn_cnt_we), |
| .wd (insn_cnt_wd), |
| .d (hw2reg.insn_cnt.d), |
| .qre (), |
| .qe (reg2hw.insn_cnt.qe), |
| .q (reg2hw.insn_cnt.q), |
| .qs (insn_cnt_qs) |
| ); |
| |
| |
| // R[load_checksum]: V(True) |
| prim_subreg_ext #( |
| .DW (32) |
| ) u_load_checksum ( |
| .re (load_checksum_re), |
| .we (load_checksum_we), |
| .wd (load_checksum_wd), |
| .d (hw2reg.load_checksum.d), |
| .qre (), |
| .qe (reg2hw.load_checksum.qe), |
| .q (reg2hw.load_checksum.q), |
| .qs (load_checksum_qs) |
| ); |
| |
| |
| |
| logic [10:0] addr_hit; |
| always_comb begin |
| addr_hit = '0; |
| addr_hit[ 0] = (reg_addr == OTBN_INTR_STATE_OFFSET); |
| addr_hit[ 1] = (reg_addr == OTBN_INTR_ENABLE_OFFSET); |
| addr_hit[ 2] = (reg_addr == OTBN_INTR_TEST_OFFSET); |
| addr_hit[ 3] = (reg_addr == OTBN_ALERT_TEST_OFFSET); |
| addr_hit[ 4] = (reg_addr == OTBN_CMD_OFFSET); |
| addr_hit[ 5] = (reg_addr == OTBN_CTRL_OFFSET); |
| addr_hit[ 6] = (reg_addr == OTBN_STATUS_OFFSET); |
| addr_hit[ 7] = (reg_addr == OTBN_ERR_BITS_OFFSET); |
| addr_hit[ 8] = (reg_addr == OTBN_FATAL_ALERT_CAUSE_OFFSET); |
| addr_hit[ 9] = (reg_addr == OTBN_INSN_CNT_OFFSET); |
| addr_hit[10] = (reg_addr == OTBN_LOAD_CHECKSUM_OFFSET); |
| end |
| |
| assign addrmiss = (reg_re || reg_we) ? ~|addr_hit : 1'b0 ; |
| |
| // Check sub-word write is permitted |
| always_comb begin |
| wr_err = (reg_we & |
| ((addr_hit[ 0] & (|(OTBN_PERMIT[ 0] & ~reg_be))) | |
| (addr_hit[ 1] & (|(OTBN_PERMIT[ 1] & ~reg_be))) | |
| (addr_hit[ 2] & (|(OTBN_PERMIT[ 2] & ~reg_be))) | |
| (addr_hit[ 3] & (|(OTBN_PERMIT[ 3] & ~reg_be))) | |
| (addr_hit[ 4] & (|(OTBN_PERMIT[ 4] & ~reg_be))) | |
| (addr_hit[ 5] & (|(OTBN_PERMIT[ 5] & ~reg_be))) | |
| (addr_hit[ 6] & (|(OTBN_PERMIT[ 6] & ~reg_be))) | |
| (addr_hit[ 7] & (|(OTBN_PERMIT[ 7] & ~reg_be))) | |
| (addr_hit[ 8] & (|(OTBN_PERMIT[ 8] & ~reg_be))) | |
| (addr_hit[ 9] & (|(OTBN_PERMIT[ 9] & ~reg_be))) | |
| (addr_hit[10] & (|(OTBN_PERMIT[10] & ~reg_be))))); |
| end |
| assign intr_state_we = addr_hit[0] & reg_we & !reg_error; |
| |
| assign intr_state_wd = reg_wdata[0]; |
| assign intr_enable_we = addr_hit[1] & reg_we & !reg_error; |
| |
| assign intr_enable_wd = reg_wdata[0]; |
| assign intr_test_we = addr_hit[2] & reg_we & !reg_error; |
| |
| assign intr_test_wd = reg_wdata[0]; |
| assign alert_test_we = addr_hit[3] & reg_we & !reg_error; |
| |
| assign alert_test_fatal_wd = reg_wdata[0]; |
| |
| assign alert_test_recov_wd = reg_wdata[1]; |
| assign cmd_we = addr_hit[4] & reg_we & !reg_error; |
| |
| assign cmd_wd = reg_wdata[7:0]; |
| assign ctrl_re = addr_hit[5] & reg_re & !reg_error; |
| assign ctrl_we = addr_hit[5] & reg_we & !reg_error; |
| |
| assign ctrl_wd = reg_wdata[0]; |
| assign err_bits_re = addr_hit[7] & reg_re & !reg_error; |
| assign err_bits_we = addr_hit[7] & reg_we & !reg_error; |
| |
| assign err_bits_bad_data_addr_wd = reg_wdata[0]; |
| |
| assign err_bits_bad_insn_addr_wd = reg_wdata[1]; |
| |
| assign err_bits_call_stack_wd = reg_wdata[2]; |
| |
| assign err_bits_illegal_insn_wd = reg_wdata[3]; |
| |
| assign err_bits_loop_wd = reg_wdata[4]; |
| |
| assign err_bits_key_invalid_wd = reg_wdata[5]; |
| |
| assign err_bits_imem_intg_violation_wd = reg_wdata[16]; |
| |
| assign err_bits_dmem_intg_violation_wd = reg_wdata[17]; |
| |
| assign err_bits_reg_intg_violation_wd = reg_wdata[18]; |
| |
| assign err_bits_bus_intg_violation_wd = reg_wdata[19]; |
| |
| assign err_bits_bad_internal_state_wd = reg_wdata[20]; |
| |
| assign err_bits_illegal_bus_access_wd = reg_wdata[21]; |
| |
| assign err_bits_lifecycle_escalation_wd = reg_wdata[22]; |
| |
| assign err_bits_fatal_software_wd = reg_wdata[23]; |
| assign insn_cnt_re = addr_hit[9] & reg_re & !reg_error; |
| assign insn_cnt_we = addr_hit[9] & reg_we & !reg_error; |
| |
| assign insn_cnt_wd = reg_wdata[31:0]; |
| assign load_checksum_re = addr_hit[10] & reg_re & !reg_error; |
| assign load_checksum_we = addr_hit[10] & reg_we & !reg_error; |
| |
| assign load_checksum_wd = reg_wdata[31:0]; |
| |
| // Read data return |
| always_comb begin |
| reg_rdata_next = '0; |
| unique case (1'b1) |
| addr_hit[0]: begin |
| reg_rdata_next[0] = intr_state_qs; |
| end |
| |
| addr_hit[1]: begin |
| reg_rdata_next[0] = intr_enable_qs; |
| end |
| |
| addr_hit[2]: begin |
| reg_rdata_next[0] = '0; |
| end |
| |
| addr_hit[3]: begin |
| reg_rdata_next[0] = '0; |
| reg_rdata_next[1] = '0; |
| end |
| |
| addr_hit[4]: begin |
| reg_rdata_next[7:0] = '0; |
| end |
| |
| addr_hit[5]: begin |
| reg_rdata_next[0] = ctrl_qs; |
| end |
| |
| addr_hit[6]: begin |
| reg_rdata_next[7:0] = status_qs; |
| end |
| |
| addr_hit[7]: begin |
| reg_rdata_next[0] = err_bits_bad_data_addr_qs; |
| reg_rdata_next[1] = err_bits_bad_insn_addr_qs; |
| reg_rdata_next[2] = err_bits_call_stack_qs; |
| reg_rdata_next[3] = err_bits_illegal_insn_qs; |
| reg_rdata_next[4] = err_bits_loop_qs; |
| reg_rdata_next[5] = err_bits_key_invalid_qs; |
| reg_rdata_next[16] = err_bits_imem_intg_violation_qs; |
| reg_rdata_next[17] = err_bits_dmem_intg_violation_qs; |
| reg_rdata_next[18] = err_bits_reg_intg_violation_qs; |
| reg_rdata_next[19] = err_bits_bus_intg_violation_qs; |
| reg_rdata_next[20] = err_bits_bad_internal_state_qs; |
| reg_rdata_next[21] = err_bits_illegal_bus_access_qs; |
| reg_rdata_next[22] = err_bits_lifecycle_escalation_qs; |
| reg_rdata_next[23] = err_bits_fatal_software_qs; |
| end |
| |
| addr_hit[8]: begin |
| reg_rdata_next[0] = fatal_alert_cause_imem_intg_violation_qs; |
| reg_rdata_next[1] = fatal_alert_cause_dmem_intg_violation_qs; |
| reg_rdata_next[2] = fatal_alert_cause_reg_intg_violation_qs; |
| reg_rdata_next[3] = fatal_alert_cause_bus_intg_violation_qs; |
| reg_rdata_next[4] = fatal_alert_cause_bad_internal_state_qs; |
| reg_rdata_next[5] = fatal_alert_cause_illegal_bus_access_qs; |
| reg_rdata_next[6] = fatal_alert_cause_lifecycle_escalation_qs; |
| reg_rdata_next[7] = fatal_alert_cause_fatal_software_qs; |
| end |
| |
| addr_hit[9]: begin |
| reg_rdata_next[31:0] = insn_cnt_qs; |
| end |
| |
| addr_hit[10]: begin |
| reg_rdata_next[31:0] = load_checksum_qs; |
| end |
| |
| default: begin |
| reg_rdata_next = '1; |
| end |
| endcase |
| end |
| |
| // shadow busy |
| logic shadow_busy; |
| assign shadow_busy = 1'b0; |
| |
| // register busy |
| logic reg_busy_sel; |
| assign reg_busy = reg_busy_sel | shadow_busy; |
| always_comb begin |
| reg_busy_sel = '0; |
| unique case (1'b1) |
| default: begin |
| reg_busy_sel = '0; |
| end |
| endcase |
| end |
| |
| |
| // Unused signal tieoff |
| |
| // wdata / byte enable are not always fully used |
| // add a blanket unused statement to handle lint waivers |
| logic unused_wdata; |
| logic unused_be; |
| assign unused_wdata = ^reg_wdata; |
| assign unused_be = ^reg_be; |
| |
| // Assertions for Register Interface |
| `ASSERT_PULSE(wePulse, reg_we, clk_i, !rst_ni) |
| `ASSERT_PULSE(rePulse, reg_re, clk_i, !rst_ni) |
| |
| `ASSERT(reAfterRv, $rose(reg_re || reg_we) |=> tl_o_pre.d_valid, clk_i, !rst_ni) |
| |
| `ASSERT(en2addrHit, (reg_we || reg_re) |-> $onehot0(addr_hit), clk_i, !rst_ni) |
| |
| // this is formulated as an assumption such that the FPV testbenches do disprove this |
| // property by mistake |
| //`ASSUME(reqParity, tl_reg_h2d.a_valid |-> tl_reg_h2d.a_user.chk_en == tlul_pkg::CheckDis) |
| |
| endmodule |
