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// 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
// This module represents an unprogrammed mask revision
// block that is configured with via programming on the
// chip top level. This value is passed to the block as
// a parameter
module user_id_programming #(
parameter [ 0:0] USER_PROJECT_ID = 32'h0
) (
`ifdef USE_POWER_PINS
inout VPWR,
inout VGND,
`endif
output [31:0] mask_rev
);
wire [31:0] mask_rev;
wire [31:0] user_proj_id_high;
wire [31:0] user_proj_id_low;
// For the mask revision input, use an array of digital constant logic cells
sky130_fd_sc_hd__conb_1 mask_rev_value [31:0] (
`ifdef USE_POWER_PINS
.VPWR(VPWR),
.VPB(VPWR),
.VNB(VGND),
.VGND(VGND),
`endif
.HI(user_proj_id_high),
.LO(user_proj_id_low)
);
genvar i;
generate
for (i = 0; i < 32; i = i+1) begin
assign mask_rev[i] = (USER_PROJECT_ID & (32'h01 << i)) ?
user_proj_id_high[i] : user_proj_id_low[i];
end
endgenerate
endmodule
`default_nettype wire