|  | // 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 rstmgr_reg_top ( | 
|  | input clk_i, | 
|  | input rst_ni, | 
|  | input  tlul_pkg::tl_h2d_t tl_i, | 
|  | output tlul_pkg::tl_d2h_t tl_o, | 
|  | // To HW | 
|  | output rstmgr_reg_pkg::rstmgr_reg2hw_t reg2hw, // Write | 
|  | input  rstmgr_reg_pkg::rstmgr_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 rstmgr_reg_pkg::* ; | 
|  |  | 
|  | localparam int AW = 5; | 
|  | 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(1) | 
|  | ) u_rsp_intg_gen ( | 
|  | .tl_i(tl_o_pre), | 
|  | .tl_o(tl_o) | 
|  | ); | 
|  |  | 
|  | assign tl_reg_h2d = tl_i; | 
|  | assign tl_o_pre   = tl_reg_d2h; | 
|  |  | 
|  | tlul_adapter_reg #( | 
|  | .RegAw(AW), | 
|  | .RegDw(DW), | 
|  | .EnableDataIntgGen(0) | 
|  | ) 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 reset_info_we; | 
|  | logic reset_info_por_qs; | 
|  | logic reset_info_por_wd; | 
|  | logic reset_info_low_power_exit_qs; | 
|  | logic reset_info_low_power_exit_wd; | 
|  | logic reset_info_ndm_reset_qs; | 
|  | logic reset_info_ndm_reset_wd; | 
|  | logic reset_info_hw_req_qs; | 
|  | logic reset_info_hw_req_wd; | 
|  | logic alert_info_ctrl_we; | 
|  | logic alert_info_ctrl_en_qs; | 
|  | logic alert_info_ctrl_en_wd; | 
|  | logic [3:0] alert_info_ctrl_index_qs; | 
|  | logic [3:0] alert_info_ctrl_index_wd; | 
|  | logic alert_info_attr_re; | 
|  | logic [3:0] alert_info_attr_qs; | 
|  | logic alert_info_re; | 
|  | logic [31:0] alert_info_qs; | 
|  | logic sw_rst_regwen_we; | 
|  | logic sw_rst_regwen_en_0_qs; | 
|  | logic sw_rst_regwen_en_0_wd; | 
|  | logic sw_rst_regwen_en_1_qs; | 
|  | logic sw_rst_regwen_en_1_wd; | 
|  | logic sw_rst_ctrl_n_re; | 
|  | logic sw_rst_ctrl_n_we; | 
|  | logic sw_rst_ctrl_n_val_0_qs; | 
|  | logic sw_rst_ctrl_n_val_0_wd; | 
|  | logic sw_rst_ctrl_n_val_1_qs; | 
|  | logic sw_rst_ctrl_n_val_1_wd; | 
|  |  | 
|  | // Register instances | 
|  | // R[reset_info]: V(False) | 
|  | //   F[por]: 0:0 | 
|  | prim_subreg #( | 
|  | .DW      (1), | 
|  | .SwAccess(prim_subreg_pkg::SwAccessW1C), | 
|  | .RESVAL  (1'h1) | 
|  | ) u_reset_info_por ( | 
|  | .clk_i   (clk_i), | 
|  | .rst_ni  (rst_ni), | 
|  |  | 
|  | // from register interface | 
|  | .we     (reset_info_we), | 
|  | .wd     (reset_info_por_wd), | 
|  |  | 
|  | // from internal hardware | 
|  | .de     (1'b0), | 
|  | .d      ('0), | 
|  |  | 
|  | // to internal hardware | 
|  | .qe     (), | 
|  | .q      (), | 
|  |  | 
|  | // to register interface (read) | 
|  | .qs     (reset_info_por_qs) | 
|  | ); | 
|  |  | 
|  | //   F[low_power_exit]: 1:1 | 
|  | prim_subreg #( | 
|  | .DW      (1), | 
|  | .SwAccess(prim_subreg_pkg::SwAccessW1C), | 
|  | .RESVAL  (1'h0) | 
|  | ) u_reset_info_low_power_exit ( | 
|  | .clk_i   (clk_i), | 
|  | .rst_ni  (rst_ni), | 
|  |  | 
|  | // from register interface | 
|  | .we     (reset_info_we), | 
|  | .wd     (reset_info_low_power_exit_wd), | 
|  |  | 
|  | // from internal hardware | 
|  | .de     (hw2reg.reset_info.low_power_exit.de), | 
|  | .d      (hw2reg.reset_info.low_power_exit.d), | 
|  |  | 
|  | // to internal hardware | 
|  | .qe     (), | 
|  | .q      (), | 
|  |  | 
|  | // to register interface (read) | 
|  | .qs     (reset_info_low_power_exit_qs) | 
|  | ); | 
|  |  | 
|  | //   F[ndm_reset]: 2:2 | 
|  | prim_subreg #( | 
|  | .DW      (1), | 
|  | .SwAccess(prim_subreg_pkg::SwAccessW1C), | 
|  | .RESVAL  (1'h0) | 
|  | ) u_reset_info_ndm_reset ( | 
|  | .clk_i   (clk_i), | 
|  | .rst_ni  (rst_ni), | 
|  |  | 
|  | // from register interface | 
|  | .we     (reset_info_we), | 
|  | .wd     (reset_info_ndm_reset_wd), | 
|  |  | 
|  | // from internal hardware | 
|  | .de     (hw2reg.reset_info.ndm_reset.de), | 
|  | .d      (hw2reg.reset_info.ndm_reset.d), | 
|  |  | 
|  | // to internal hardware | 
|  | .qe     (), | 
|  | .q      (), | 
|  |  | 
|  | // to register interface (read) | 
|  | .qs     (reset_info_ndm_reset_qs) | 
|  | ); | 
|  |  | 
|  | //   F[hw_req]: 3:3 | 
|  | prim_subreg #( | 
|  | .DW      (1), | 
|  | .SwAccess(prim_subreg_pkg::SwAccessW1C), | 
|  | .RESVAL  (1'h0) | 
|  | ) u_reset_info_hw_req ( | 
|  | .clk_i   (clk_i), | 
|  | .rst_ni  (rst_ni), | 
|  |  | 
|  | // from register interface | 
|  | .we     (reset_info_we), | 
|  | .wd     (reset_info_hw_req_wd), | 
|  |  | 
|  | // from internal hardware | 
|  | .de     (hw2reg.reset_info.hw_req.de), | 
|  | .d      (hw2reg.reset_info.hw_req.d), | 
|  |  | 
|  | // to internal hardware | 
|  | .qe     (), | 
|  | .q      (reg2hw.reset_info.hw_req.q), | 
|  |  | 
|  | // to register interface (read) | 
|  | .qs     (reset_info_hw_req_qs) | 
|  | ); | 
|  |  | 
|  |  | 
|  | // R[alert_info_ctrl]: V(False) | 
|  | //   F[en]: 0:0 | 
|  | prim_subreg #( | 
|  | .DW      (1), | 
|  | .SwAccess(prim_subreg_pkg::SwAccessRW), | 
|  | .RESVAL  (1'h0) | 
|  | ) u_alert_info_ctrl_en ( | 
|  | .clk_i   (clk_i), | 
|  | .rst_ni  (rst_ni), | 
|  |  | 
|  | // from register interface | 
|  | .we     (alert_info_ctrl_we), | 
|  | .wd     (alert_info_ctrl_en_wd), | 
|  |  | 
|  | // from internal hardware | 
|  | .de     (hw2reg.alert_info_ctrl.en.de), | 
|  | .d      (hw2reg.alert_info_ctrl.en.d), | 
|  |  | 
|  | // to internal hardware | 
|  | .qe     (), | 
|  | .q      (reg2hw.alert_info_ctrl.en.q), | 
|  |  | 
|  | // to register interface (read) | 
|  | .qs     (alert_info_ctrl_en_qs) | 
|  | ); | 
|  |  | 
|  | //   F[index]: 7:4 | 
|  | prim_subreg #( | 
|  | .DW      (4), | 
|  | .SwAccess(prim_subreg_pkg::SwAccessRW), | 
|  | .RESVAL  (4'h0) | 
|  | ) u_alert_info_ctrl_index ( | 
|  | .clk_i   (clk_i), | 
|  | .rst_ni  (rst_ni), | 
|  |  | 
|  | // from register interface | 
|  | .we     (alert_info_ctrl_we), | 
|  | .wd     (alert_info_ctrl_index_wd), | 
|  |  | 
|  | // from internal hardware | 
|  | .de     (1'b0), | 
|  | .d      ('0), | 
|  |  | 
|  | // to internal hardware | 
|  | .qe     (), | 
|  | .q      (reg2hw.alert_info_ctrl.index.q), | 
|  |  | 
|  | // to register interface (read) | 
|  | .qs     (alert_info_ctrl_index_qs) | 
|  | ); | 
|  |  | 
|  |  | 
|  | // R[alert_info_attr]: V(True) | 
|  | prim_subreg_ext #( | 
|  | .DW    (4) | 
|  | ) u_alert_info_attr ( | 
|  | .re     (alert_info_attr_re), | 
|  | .we     (1'b0), | 
|  | .wd     ('0), | 
|  | .d      (hw2reg.alert_info_attr.d), | 
|  | .qre    (), | 
|  | .qe     (), | 
|  | .q      (), | 
|  | .qs     (alert_info_attr_qs) | 
|  | ); | 
|  |  | 
|  |  | 
|  | // R[alert_info]: V(True) | 
|  | prim_subreg_ext #( | 
|  | .DW    (32) | 
|  | ) u_alert_info ( | 
|  | .re     (alert_info_re), | 
|  | .we     (1'b0), | 
|  | .wd     ('0), | 
|  | .d      (hw2reg.alert_info.d), | 
|  | .qre    (), | 
|  | .qe     (), | 
|  | .q      (), | 
|  | .qs     (alert_info_qs) | 
|  | ); | 
|  |  | 
|  |  | 
|  | // Subregister 0 of Multireg sw_rst_regwen | 
|  | // R[sw_rst_regwen]: V(False) | 
|  | //   F[en_0]: 0:0 | 
|  | prim_subreg #( | 
|  | .DW      (1), | 
|  | .SwAccess(prim_subreg_pkg::SwAccessW0C), | 
|  | .RESVAL  (1'h1) | 
|  | ) u_sw_rst_regwen_en_0 ( | 
|  | .clk_i   (clk_i), | 
|  | .rst_ni  (rst_ni), | 
|  |  | 
|  | // from register interface | 
|  | .we     (sw_rst_regwen_we), | 
|  | .wd     (sw_rst_regwen_en_0_wd), | 
|  |  | 
|  | // from internal hardware | 
|  | .de     (1'b0), | 
|  | .d      ('0), | 
|  |  | 
|  | // to internal hardware | 
|  | .qe     (), | 
|  | .q      (reg2hw.sw_rst_regwen[0].q), | 
|  |  | 
|  | // to register interface (read) | 
|  | .qs     (sw_rst_regwen_en_0_qs) | 
|  | ); | 
|  |  | 
|  | //   F[en_1]: 1:1 | 
|  | prim_subreg #( | 
|  | .DW      (1), | 
|  | .SwAccess(prim_subreg_pkg::SwAccessW0C), | 
|  | .RESVAL  (1'h1) | 
|  | ) u_sw_rst_regwen_en_1 ( | 
|  | .clk_i   (clk_i), | 
|  | .rst_ni  (rst_ni), | 
|  |  | 
|  | // from register interface | 
|  | .we     (sw_rst_regwen_we), | 
|  | .wd     (sw_rst_regwen_en_1_wd), | 
|  |  | 
|  | // from internal hardware | 
|  | .de     (1'b0), | 
|  | .d      ('0), | 
|  |  | 
|  | // to internal hardware | 
|  | .qe     (), | 
|  | .q      (reg2hw.sw_rst_regwen[1].q), | 
|  |  | 
|  | // to register interface (read) | 
|  | .qs     (sw_rst_regwen_en_1_qs) | 
|  | ); | 
|  |  | 
|  |  | 
|  | // Subregister 0 of Multireg sw_rst_ctrl_n | 
|  | // R[sw_rst_ctrl_n]: V(True) | 
|  | //   F[val_0]: 0:0 | 
|  | prim_subreg_ext #( | 
|  | .DW    (1) | 
|  | ) u_sw_rst_ctrl_n_val_0 ( | 
|  | .re     (sw_rst_ctrl_n_re), | 
|  | .we     (sw_rst_ctrl_n_we), | 
|  | .wd     (sw_rst_ctrl_n_val_0_wd), | 
|  | .d      (hw2reg.sw_rst_ctrl_n[0].d), | 
|  | .qre    (), | 
|  | .qe     (reg2hw.sw_rst_ctrl_n[0].qe), | 
|  | .q      (reg2hw.sw_rst_ctrl_n[0].q), | 
|  | .qs     (sw_rst_ctrl_n_val_0_qs) | 
|  | ); | 
|  |  | 
|  | //   F[val_1]: 1:1 | 
|  | prim_subreg_ext #( | 
|  | .DW    (1) | 
|  | ) u_sw_rst_ctrl_n_val_1 ( | 
|  | .re     (sw_rst_ctrl_n_re), | 
|  | .we     (sw_rst_ctrl_n_we), | 
|  | .wd     (sw_rst_ctrl_n_val_1_wd), | 
|  | .d      (hw2reg.sw_rst_ctrl_n[1].d), | 
|  | .qre    (), | 
|  | .qe     (reg2hw.sw_rst_ctrl_n[1].qe), | 
|  | .q      (reg2hw.sw_rst_ctrl_n[1].q), | 
|  | .qs     (sw_rst_ctrl_n_val_1_qs) | 
|  | ); | 
|  |  | 
|  |  | 
|  |  | 
|  | logic [5:0] addr_hit; | 
|  | always_comb begin | 
|  | addr_hit = '0; | 
|  | addr_hit[0] = (reg_addr == RSTMGR_RESET_INFO_OFFSET); | 
|  | addr_hit[1] = (reg_addr == RSTMGR_ALERT_INFO_CTRL_OFFSET); | 
|  | addr_hit[2] = (reg_addr == RSTMGR_ALERT_INFO_ATTR_OFFSET); | 
|  | addr_hit[3] = (reg_addr == RSTMGR_ALERT_INFO_OFFSET); | 
|  | addr_hit[4] = (reg_addr == RSTMGR_SW_RST_REGWEN_OFFSET); | 
|  | addr_hit[5] = (reg_addr == RSTMGR_SW_RST_CTRL_N_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] & (|(RSTMGR_PERMIT[0] & ~reg_be))) | | 
|  | (addr_hit[1] & (|(RSTMGR_PERMIT[1] & ~reg_be))) | | 
|  | (addr_hit[2] & (|(RSTMGR_PERMIT[2] & ~reg_be))) | | 
|  | (addr_hit[3] & (|(RSTMGR_PERMIT[3] & ~reg_be))) | | 
|  | (addr_hit[4] & (|(RSTMGR_PERMIT[4] & ~reg_be))) | | 
|  | (addr_hit[5] & (|(RSTMGR_PERMIT[5] & ~reg_be))))); | 
|  | end | 
|  | assign reset_info_we = addr_hit[0] & reg_we & !reg_error; | 
|  |  | 
|  | assign reset_info_por_wd = reg_wdata[0]; | 
|  |  | 
|  | assign reset_info_low_power_exit_wd = reg_wdata[1]; | 
|  |  | 
|  | assign reset_info_ndm_reset_wd = reg_wdata[2]; | 
|  |  | 
|  | assign reset_info_hw_req_wd = reg_wdata[3]; | 
|  | assign alert_info_ctrl_we = addr_hit[1] & reg_we & !reg_error; | 
|  |  | 
|  | assign alert_info_ctrl_en_wd = reg_wdata[0]; | 
|  |  | 
|  | assign alert_info_ctrl_index_wd = reg_wdata[7:4]; | 
|  | assign alert_info_attr_re = addr_hit[2] & reg_re & !reg_error; | 
|  | assign alert_info_re = addr_hit[3] & reg_re & !reg_error; | 
|  | assign sw_rst_regwen_we = addr_hit[4] & reg_we & !reg_error; | 
|  |  | 
|  | assign sw_rst_regwen_en_0_wd = reg_wdata[0]; | 
|  |  | 
|  | assign sw_rst_regwen_en_1_wd = reg_wdata[1]; | 
|  | assign sw_rst_ctrl_n_re = addr_hit[5] & reg_re & !reg_error; | 
|  | assign sw_rst_ctrl_n_we = addr_hit[5] & reg_we & !reg_error; | 
|  |  | 
|  | assign sw_rst_ctrl_n_val_0_wd = reg_wdata[0]; | 
|  |  | 
|  | assign sw_rst_ctrl_n_val_1_wd = reg_wdata[1]; | 
|  |  | 
|  | // Read data return | 
|  | always_comb begin | 
|  | reg_rdata_next = '0; | 
|  | unique case (1'b1) | 
|  | addr_hit[0]: begin | 
|  | reg_rdata_next[0] = reset_info_por_qs; | 
|  | reg_rdata_next[1] = reset_info_low_power_exit_qs; | 
|  | reg_rdata_next[2] = reset_info_ndm_reset_qs; | 
|  | reg_rdata_next[3] = reset_info_hw_req_qs; | 
|  | end | 
|  |  | 
|  | addr_hit[1]: begin | 
|  | reg_rdata_next[0] = alert_info_ctrl_en_qs; | 
|  | reg_rdata_next[7:4] = alert_info_ctrl_index_qs; | 
|  | end | 
|  |  | 
|  | addr_hit[2]: begin | 
|  | reg_rdata_next[3:0] = alert_info_attr_qs; | 
|  | end | 
|  |  | 
|  | addr_hit[3]: begin | 
|  | reg_rdata_next[31:0] = alert_info_qs; | 
|  | end | 
|  |  | 
|  | addr_hit[4]: begin | 
|  | reg_rdata_next[0] = sw_rst_regwen_en_0_qs; | 
|  | reg_rdata_next[1] = sw_rst_regwen_en_1_qs; | 
|  | end | 
|  |  | 
|  | addr_hit[5]: begin | 
|  | reg_rdata_next[0] = sw_rst_ctrl_n_val_0_qs; | 
|  | reg_rdata_next[1] = sw_rst_ctrl_n_val_1_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 |