| // SPDX-FileCopyrightText: 2020 Efabless Corporation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // SPDX-License-Identifier: Apache-2.0 |
| |
| `default_nettype none |
| `include "openram_defines.v" |
| /* |
| *------------------------------------------------------------- |
| * |
| * user_project_wrapper |
| * |
| * This wrapper enumerates all of the pins available to the |
| * user for the user project. |
| * |
| * An example user project is provided in this wrapper. The |
| * example should be removed and replaced with the actual |
| * user project. |
| * |
| *------------------------------------------------------------- |
| */ |
| |
| module user_project_wrapper #( |
| parameter BITS = 32 |
| ) ( |
| `ifdef USE_POWER_PINS |
| inout vdda1, // User area 1 3.3V supply |
| inout vdda2, // User area 2 3.3V supply |
| inout vssa1, // User area 1 analog ground |
| inout vssa2, // User area 2 analog ground |
| inout vccd1, // User area 1 1.8V supply |
| inout vccd2, // User area 2 1.8v supply |
| inout vssd1, // User area 1 digital ground |
| inout vssd2, // User area 2 digital ground |
| `endif |
| |
| // Wishbone Slave ports (WB MI A) |
| input wb_clk_i, |
| input wb_rst_i, |
| input wbs_stb_i, |
| input wbs_cyc_i, |
| input wbs_we_i, |
| input [3:0] wbs_sel_i, |
| input [31:0] wbs_dat_i, |
| input [31:0] wbs_adr_i, |
| output wbs_ack_o, |
| output [31:0] wbs_dat_o, |
| |
| // Logic Analyzer Signals |
| input [127:0] la_data_in, |
| output [127:0] la_data_out, |
| input [127:0] la_oenb, |
| |
| // IOs |
| input [`MPRJ_IO_PADS-1:0] io_in, |
| output [`MPRJ_IO_PADS-1:0] io_out, |
| output [`MPRJ_IO_PADS-1:0] io_oeb, |
| |
| // Analog (direct connection to GPIO pad---use with caution) |
| // Note that analog I/O is not available on the 7 lowest-numbered |
| // GPIO pads, and so the analog_io indexing is offset from the |
| // GPIO indexing by 7 (also upper 2 GPIOs do not have analog_io). |
| inout [`MPRJ_IO_PADS-10:0] analog_io, |
| |
| // Independent clock (on independent integer divider) |
| input user_clock2, |
| |
| // User maskable interrupt signals |
| output [2:0] user_irq |
| ); |
| |
| |
| assign la_data_out[127:112] = 0; |
| |
| // Shared control/data to the SRAMs |
| wire [`ADDR_SIZE-1:0] addr0; |
| wire [`DATA_SIZE-1:0] din0; |
| wire web0; |
| wire [`WMASK_SIZE-1:0] wmask0; |
| wire [`ADDR_SIZE-1:0] addr1; |
| wire [`DATA_SIZE-1:0] din1; |
| wire web1; |
| wire [`WMASK_SIZE-1:0] wmask1; |
| // One CSB for each SRAM |
| wire [`MAX_CHIPS-1:0] csb0; |
| wire [`MAX_CHIPS-1:0] csb1; |
| |
| wire [1:0] in_select = {io_in[23],io_in[16]}; |
| wire gpio_resetn = io_in[15]; |
| wire gpio_clk = io_in[17]; |
| wire gpio_scan = io_in[19]; |
| wire gpio_sram_load = io_in[20]; |
| wire gpio_global_csb = io_in[21]; |
| wire gpio_in = io_in[18]; |
| wire la_clk = la_data_in[127]; |
| wire la_reset = la_data_in[126]; |
| wire la_in_load = la_data_in[125]; |
| wire la_sram_load = la_data_in[124]; |
| wire la_global_cs = la_data_in[123]; |
| // Only io_out[22] is output |
| assign io_oeb = ~(1'b1 << 22); |
| // Assign other outputs to 0 |
| assign io_out[`MPRJ_IO_PADS-1:23] = 0; |
| wire gpio_out; |
| assign io_out[22] = gpio_out; |
| assign io_out[21:0] = 0; |
| |
| // Selecting clock pin |
| reg clk; |
| always @(*) begin |
| case (in_select) |
| 2'b00 : clk = la_clk; |
| 2'b01 : clk = gpio_clk; |
| 2'b10 : clk = wb_clk_i; |
| default : clk = 0; |
| endcase |
| end |
| |
| // global csb is low with either GPIO or LA csb |
| // la_global_cs is low because default LA values are 0 |
| wire global_csb = gpio_global_csb & ~la_global_cs; |
| // rstn is low with either GPIO or LA reset |
| // la_reset is not active low because default LA values are 0 |
| wire rstn = gpio_resetn & ~la_reset; |
| |
| openram_testchip CONTROL_LOGIC( |
| .resetn(rstn), |
| .clk(clk), |
| .global_csb(global_csb), |
| // gpio related control signals |
| .gpio_scan(gpio_scan), |
| .gpio_sram_load(gpio_sram_load), |
| .gpio_in(gpio_in), |
| .gpio_out(gpio_out), |
| // la related control signals |
| .la_in_load(la_in_load), |
| .la_sram_load(la_sram_load), |
| .la_data_in(la_data_in[111:0]), |
| .la_data_out(la_data_out[111:0]), |
| // wishbone related control signals |
| .wb_clk_i(wb_clk_i), |
| .wb_rst_i(wb_rst_i), |
| .wbs_stb_i(wbs_stb_i), |
| .wbs_cyc_i(wbs_cyc_i), |
| .wbs_we_i(wbs_we_i), |
| .wbs_sel_i(wbs_sel_i), |
| .wbs_dat_i(wbs_dat_i), |
| .wbs_adr_i(wbs_adr_i), |
| .wbs_ack_o(wbs_ack_o), |
| .wbs_dat_o(wbs_dat_o), |
| .wbs_sram8_data(sram8_dout0), |
| .wbs_sram9_data(sram9_dout0), |
| // Shared control/data to the SRAMs |
| .addr0(addr0), |
| .din0(din0), |
| // One CSB for each SRAM |
| .csb0(csb0), |
| .web0(web0), |
| .wmask0(wmask0), |
| .addr1(addr1), |
| .din1(din1), |
| // One CSB for each SRAM |
| .csb1(csb1), |
| .web1(web1), |
| .wmask1(wmask1), |
| |
| // SRAM data outputs to be captured |
| .sram0_data0(sram0_data0), |
| .sram0_data1(sram0_data1), |
| .sram1_data0(sram1_data0), |
| .sram1_data1(sram1_data1), |
| .sram2_data0(sram2_data0), |
| .sram2_data1(sram2_data1), |
| .sram3_data0(sram3_data0), |
| .sram3_data1(sram3_data1), |
| .sram4_data0(sram4_data0), |
| .sram4_data1(sram4_data1), |
| .sram5_data0(sram5_data0), |
| .sram5_data1(sram5_data1), |
| .sram6_data0(sram6_data0), |
| .sram6_data1(sram6_data1), |
| .sram7_data0(sram7_data0), |
| .sram7_data1(sram7_data1), |
| .sram8_data0(sram8_data0), |
| .sram8_data1(sram8_data1), |
| .sram9_data0(sram9_data0), |
| .sram9_data1(sram9_data1), |
| .sram10_data0(sram10_data0), |
| .sram10_data1(sram10_data1), |
| .sram11_data0(sram11_data0), |
| .sram11_data1(sram11_data1), |
| .sram12_data0(sram12_data0), |
| .sram12_data1(sram12_data1), |
| .sram13_data0(sram13_data0), |
| .sram13_data1(sram13_data1), |
| .sram14_data0(sram14_data0), |
| .sram14_data1(sram14_data1), |
| .sram15_data0(sram15_data0), |
| .sram15_data1(sram15_data1) |
| |
| ); |
| |
| wire [`DATA_SIZE-1:0] sram0_dout0; |
| wire [`DATA_SIZE-1:0] sram0_dout1; |
| wire [`DATA_SIZE-1:0] sram1_dout0; |
| wire [`DATA_SIZE-1:0] sram1_dout1; |
| wire [`DATA_SIZE-1:0] sram2_dout0; |
| wire [`DATA_SIZE-1:0] sram2_dout1; |
| wire [`DATA_SIZE-1:0] sram3_dout0; |
| wire [`DATA_SIZE-1:0] sram3_dout1; |
| wire [`DATA_SIZE-1:0] sram4_dout0; |
| wire [`DATA_SIZE-1:0] sram4_dout1; |
| wire [`DATA_SIZE-1:0] sram5_dout0 = 0; |
| wire [`DATA_SIZE-1:0] sram5_dout1 = 0; |
| wire [`DATA_SIZE-1:0] sram6_dout0 = 0; |
| wire [`DATA_SIZE-1:0] sram6_dout1 = 0; |
| wire [`DATA_SIZE-1:0] sram7_dout0 = 0; |
| wire [`DATA_SIZE-1:0] sram7_dout1 = 0; |
| wire [`DATA_SIZE-1:0] sram8_dout0; |
| wire [`DATA_SIZE-1:0] sram8_dout1 = 0; |
| wire [`DATA_SIZE-1:0] sram9_dout0; |
| wire [`DATA_SIZE-1:0] sram9_dout1 = 0; |
| wire [`DATA_SIZE-1:0] sram10_dout0; |
| wire [`DATA_SIZE-1:0] sram10_dout1 = 0; |
| wire [`DATA_SIZE-1:0] sram11_dout0; |
| wire [`DATA_SIZE-1:0] sram11_dout1 = 0; |
| wire [`DATA_SIZE-1:0] sram12_dout0; |
| wire [`DATA_SIZE-1:0] sram12_dout1 = 0; |
| wire [`DATA_SIZE-1:0] sram13_dout0 = 0; |
| wire [`DATA_SIZE-1:0] sram13_dout1 = 0; |
| wire [`DATA_SIZE-1:0] sram14_dout0 = 0; |
| wire [`DATA_SIZE-1:0] sram14_dout1 = 0; |
| wire [`DATA_SIZE-1:0] sram15_dout0 = 0; |
| wire [`DATA_SIZE-1:0] sram15_dout1 = 0; |
| |
| sky130_sram_1kbyte_1rw1r_8x1024_8 SRAM0 |
| ( |
| `ifdef USE_POWER_PINS |
| .vccd1(vccd1), |
| .vssd1(vssd1), |
| `endif |
| .clk0 (clk), |
| .csb0 (csb0[0]), |
| .web0 (web0), |
| .wmask0 (wmask0), |
| .addr0 (addr0), |
| .din0 (din0), |
| .dout0 (sram0_dout0[7:0]), |
| .clk1 (clk), |
| .csb1 (csb1[0]), |
| .addr1 (addr1), |
| .dout1 (sram0_dout1[7:0]) |
| ); |
| assign sram0_dout0[`DATA_SIZE-1:8] = 0; |
| assign sram0_dout1[`DATA_SIZE-1:8] = 0; |
| |
| sky130_sram_1kbyte_1rw1r_32x256_8 SRAM1 |
| ( |
| `ifdef USE_POWER_PINS |
| .vccd1(vccd1), |
| .vssd1(vssd1), |
| `endif |
| .clk0 (clk), |
| .csb0 (csb0[1]), |
| .web0 (web0), |
| .wmask0 (wmask0), |
| .addr0 (addr0), |
| .din0 (din0), |
| .dout0 (sram1_dout0), |
| .clk1 (clk), |
| .csb1 (csb1[1]), |
| .addr1 (addr1), |
| .dout1 (sram1_dout1) |
| ); |
| |
| sky130_sram_2kbyte_1rw1r_32x512_8 SRAM2 |
| ( |
| `ifdef USE_POWER_PINS |
| .vccd1(vccd1), |
| .vssd1(vssd1), |
| `endif |
| .clk0 (clk), |
| .csb0 (csb0[2]), |
| .web0 (web0), |
| .wmask0 (wmask0), |
| .addr0 (addr0), |
| .din0 (din0), |
| .dout0 (sram2_dout0), |
| .clk1 (clk), |
| .csb1 (csb1[2]), |
| .addr1 (addr1), |
| .dout1 (sram2_dout1) |
| ); |
| |
| sky130_sram_4kbyte_1rw1r_32x1024_8 SRAM3 |
| ( |
| `ifdef USE_POWER_PINS |
| .vccd1(vccd1), |
| .vssd1(vssd1), |
| `endif |
| .clk0 (clk), |
| .csb0 (csb0[3]), |
| .web0 (web0), |
| .wmask0 (wmask0), |
| .addr0 (addr0), |
| .din0 (din0), |
| .dout0 (sram3_dout0), |
| .clk1 (clk), |
| .csb1 (csb1[3]), |
| .addr1 (addr1), |
| .dout1 (sram3_dout1) |
| ); |
| |
| sky130_sram_8kbyte_1rw1r_32x2048_8 SRAM4 |
| ( |
| `ifdef USE_POWER_PINS |
| .vccd1(vccd1), |
| .vssd1(vssd1), |
| `endif |
| .clk0 (clk), |
| .csb0 (csb0[4]), |
| .web0 (web0), |
| .wmask0 (wmask0), |
| .addr0 (addr0), |
| .din0 (din0), |
| .dout0 (sram4_dout0), |
| .clk1 (clk), |
| .csb1 (csb1[4]), |
| .addr1 (addr1), |
| .dout1 (sram4_dout1) |
| ); |
| |
| // Not working yet |
| // sky130_sram_16kbyte_1rw1r_32x4096_8 SRAM6 |
| // ( |
| // `ifdef USE_POWER_PINS |
| // .vccd1(vccd1), |
| // .vssd1(vssd1), |
| // `endif |
| // .clk0 (clk), |
| // .csb0 (csb0[6]), |
| // .web0 (web0), |
| // .wmask0 (wmask0), |
| // .addr0 (addr0), |
| // .din0 (din0), |
| // .dout0 (sram6_dout0), |
| // .clk1 (clk), |
| // .csb1 (csb1[6]), |
| // .addr1 (addr1), |
| // .dout1 (sram6_dout1) |
| // ); |
| |
| |
| |
| // Single port memories |
| |
| wire disconn8, disconn9, disconn10, disconn11, disconn12; |
| |
| sky130_sram_1kbyte_1rw_32x256_8 SRAM8 |
| ( |
| `ifdef USE_POWER_PINS |
| .vccd1(vccd1), |
| .vssd1(vssd1), |
| `endif |
| .clk0 (clk), |
| .csb0 (csb0[8]), |
| .web0 (web0), |
| .wmask0 (wmask0), |
| .addr0 (addr0), |
| .din0 ({1'b0, din0}), |
| .dout0 ({disconn8, sram8_dout0}), |
| .spare_wen0(1'b0) |
| ); |
| |
| sky130_sram_2kbyte_1rw_32x512_8 SRAM9 |
| ( |
| `ifdef USE_POWER_PINS |
| .vccd1(vccd1), |
| .vssd1(vssd1), |
| `endif |
| .clk0 (clk), |
| .csb0 (csb0[9]), |
| .web0 (web0), |
| .wmask0 (wmask0), |
| .addr0 (addr0), |
| .din0 ({1'b0, din0}), |
| .dout0 ({disconn9, sram9_dout0}), |
| .spare_wen0(1'b0) |
| ); |
| |
| sky130_sram_4kbyte_1rw_32x1024_8 SRAM10 |
| ( |
| `ifdef USE_POWER_PINS |
| .vccd1(vccd1), |
| .vssd1(vssd1), |
| `endif |
| .clk0 (clk), |
| .csb0 (csb0[10]), |
| .web0 (web0), |
| .wmask0 (wmask0), |
| .addr0 (addr0), |
| .din0 ({1'b0, din0}), |
| .dout0 ({disconn10, sram10_dout0}), |
| .spare_wen0(1'b0) |
| ); |
| |
| |
| wire [63:0] temp_sram11_dout0; |
| sky130_sram_4kbyte_1rw_64x512_8 SRAM11 |
| ( |
| `ifdef USE_POWER_PINS |
| .vccd1(vccd1), |
| .vssd1(vssd1), |
| `endif |
| .clk0 (clk), |
| .csb0 (csb0[11]), |
| .web0 (web0), |
| .wmask0 ({wmask0[3:2],4'hF,wmask0[1:0]}), |
| .addr0 (addr0), |
| .din0 ({1'b0, din0, din0}), |
| .dout0 ({disconn11, temp_sram11_dout0}), |
| .spare_wen0(1'b0) |
| ); |
| assign sram11_dout0 = {temp_sram11_dout0[63:48], temp_sram11_dout0[15:0]}; |
| |
| wire [63:0] temp_sram12_dout0; |
| sky130_sram_8kbyte_1rw_64x1024_8 SRAM12 |
| ( |
| `ifdef USE_POWER_PINS |
| .vccd1(vccd1), |
| .vssd1(vssd1), |
| `endif |
| .clk0 (clk), |
| .csb0 (csb0[12]), |
| .web0 (web0), |
| .wmask0 ({wmask0[3:2],4'hF,wmask0[1:0]}), |
| .addr0 (addr0), |
| .din0 ({1'b0, din0, din0}), |
| .dout0 ({disconn12, temp_sram12_dout0}), |
| .spare_wen0(1'b0) |
| ); |
| assign sram12_dout0 = {temp_sram12_dout0[63:48], temp_sram12_dout0[15:0]}; |
| |
| // Hold dout from SRAM |
| // clocked by SRAM clk |
| reg [`DATA_SIZE-1:0] sram0_data0; |
| reg [`DATA_SIZE-1:0] sram0_data1; |
| reg [`DATA_SIZE-1:0] sram1_data0; |
| reg [`DATA_SIZE-1:0] sram1_data1; |
| reg [`DATA_SIZE-1:0] sram2_data0; |
| reg [`DATA_SIZE-1:0] sram2_data1; |
| reg [`DATA_SIZE-1:0] sram3_data0; |
| reg [`DATA_SIZE-1:0] sram3_data1; |
| reg [`DATA_SIZE-1:0] sram4_data0; |
| reg [`DATA_SIZE-1:0] sram4_data1; |
| reg [`DATA_SIZE-1:0] sram5_data0; |
| reg [`DATA_SIZE-1:0] sram5_data1; |
| reg [`DATA_SIZE-1:0] sram6_data0; |
| reg [`DATA_SIZE-1:0] sram6_data1; |
| reg [`DATA_SIZE-1:0] sram7_data0; |
| reg [`DATA_SIZE-1:0] sram7_data1; |
| reg [`DATA_SIZE-1:0] sram8_data0; |
| reg [`DATA_SIZE-1:0] sram8_data1; |
| reg [`DATA_SIZE-1:0] sram9_data0; |
| reg [`DATA_SIZE-1:0] sram9_data1; |
| reg [`DATA_SIZE-1:0] sram10_data0; |
| reg [`DATA_SIZE-1:0] sram10_data1; |
| reg [`DATA_SIZE-1:0] sram11_data0; |
| reg [`DATA_SIZE-1:0] sram11_data1; |
| reg [`DATA_SIZE-1:0] sram12_data0; |
| reg [`DATA_SIZE-1:0] sram12_data1; |
| reg [`DATA_SIZE-1:0] sram13_data0; |
| reg [`DATA_SIZE-1:0] sram13_data1; |
| reg [`DATA_SIZE-1:0] sram14_data0; |
| reg [`DATA_SIZE-1:0] sram14_data1; |
| reg [`DATA_SIZE-1:0] sram15_data0; |
| reg [`DATA_SIZE-1:0] sram15_data1; |
| |
| always @(posedge clk) begin |
| if (!rstn) begin |
| sram0_data0 <= 0; |
| sram0_data1 <= 0; |
| sram1_data0 <= 0; |
| sram1_data1 <= 0; |
| sram2_data0 <= 0; |
| sram2_data1 <= 0; |
| sram3_data0 <= 0; |
| sram3_data1 <= 0; |
| sram4_data0 <= 0; |
| sram4_data1 <= 0; |
| sram5_data0 <= 0; |
| sram5_data1 <= 0; |
| sram6_data0 <= 0; |
| sram6_data1 <= 0; |
| sram7_data0 <= 0; |
| sram7_data1 <= 0; |
| sram8_data0 <= 0; |
| sram8_data1 <= 0; |
| sram9_data0 <= 0; |
| sram9_data1 <= 0; |
| sram10_data0 <= 0; |
| sram10_data1 <= 0; |
| sram11_data0 <= 0; |
| sram11_data1 <= 0; |
| sram12_data0 <= 0; |
| sram12_data1 <= 0; |
| sram13_data0 <= 0; |
| sram13_data1 <= 0; |
| sram14_data0 <= 0; |
| sram14_data1 <= 0; |
| sram15_data0 <= 0; |
| sram15_data1 <= 0; |
| end |
| else begin |
| sram0_data0 <= sram0_dout0; |
| sram0_data1 <= sram0_dout1; |
| sram1_data0 <= sram1_dout0; |
| sram1_data1 <= sram1_dout1; |
| sram2_data0 <= sram2_dout0; |
| sram2_data1 <= sram2_dout1; |
| sram3_data0 <= sram3_dout0; |
| sram3_data1 <= sram3_dout1; |
| sram4_data0 <= sram4_dout0; |
| sram4_data1 <= sram4_dout1; |
| sram5_data0 <= sram5_dout0; |
| sram5_data1 <= sram5_dout1; |
| sram6_data0 <= sram6_dout0; |
| sram6_data1 <= sram6_dout1; |
| sram7_data0 <= sram7_dout0; |
| sram7_data1 <= sram7_dout1; |
| sram8_data0 <= sram8_dout0; |
| sram8_data1 <= sram8_dout1; |
| sram9_data0 <= sram9_dout0; |
| sram9_data1 <= sram9_dout1; |
| sram10_data0 <= sram10_dout0; |
| sram10_data1 <= sram10_dout1; |
| sram11_data0 <= sram11_dout0; |
| sram11_data1 <= sram11_dout1; |
| sram12_data0 <= sram12_dout0; |
| sram12_data1 <= sram12_dout1; |
| sram13_data0 <= sram13_dout0; |
| sram13_data1 <= sram13_dout1; |
| sram14_data0 <= sram14_dout0; |
| sram14_data1 <= sram14_dout1; |
| sram15_data0 <= sram15_dout0; |
| sram15_data1 <= sram15_dout1; |
| end |
| end |
| |
| endmodule // user_project_wrapper |
| |
| `default_nettype wire |
