[jtag_mux] Delete JTAG mux module
Signed-off-by: Michael Schaffner <msf@opentitan.org>
diff --git a/hw/ip/pinmux/pinmux_component.core b/hw/ip/pinmux/pinmux_component.core
index cb86fe8..1ae1898 100644
--- a/hw/ip/pinmux/pinmux_component.core
+++ b/hw/ip/pinmux/pinmux_component.core
@@ -18,7 +18,6 @@
# pinmux_wkup.sv depends on pinmux_reg_pkg.sv
- "fileset_topgen ? (lowrisc:systems:topgen-reg-only)"
files:
- - rtl/jtag_mux.sv
- rtl/padring.sv
- rtl/pinmux_pkg.sv
- rtl/pinmux_wkup.sv
diff --git a/hw/ip/pinmux/rtl/jtag_mux.sv b/hw/ip/pinmux/rtl/jtag_mux.sv
deleted file mode 100644
index 9d98db3..0000000
--- a/hw/ip/pinmux/rtl/jtag_mux.sv
+++ /dev/null
@@ -1,107 +0,0 @@
-// Copyright lowRISC contributors.
-// Licensed under the Apache License, Version 2.0, see LICENSE for details.
-// SPDX-License-Identifier: Apache-2.0
-//
-// JTAG mux. Taps out JTAG singals from IO array signals.
-
-`include "prim_assert.sv"
-
-module jtag_mux #(
- parameter int NumIOs = 32,
- parameter logic [NumIOs-1:0] TieOffValues = '0,
- // Pin to enable JTAG. This is only sampled but not fully muxed.
- parameter int JtagEnIdx = 0,
- parameter bit JtagEnPolarity = 1'b1,
- // These signals are fully muxed and tied off if not in use.
- parameter int TckIdx = 0,
- parameter int TmsIdx = 0,
- parameter int TrstIdx = 0,
- parameter int SrstIdx = 0,
- parameter int TdiIdx = 0,
- parameter int TdoIdx = 0,
- // Indices for USB breakout (this is a Bronze workaround)
- parameter int UsbDpPuIdx = 0,
- parameter int UsbDnPuIdx = 0,
- parameter int UsbDIdx = 0,
- parameter bit ConnectUSB = 0
-) (
- // To JTAG inside core
- output logic jtag_tck_o,
- output logic jtag_tms_o,
- output logic jtag_trst_no,
- output logic jtag_srst_no,
- output logic jtag_tdi_o,
- input logic jtag_tdo_i,
-
- // To core side
- input logic [NumIOs-1:0] out_core_i,
- input logic [NumIOs-1:0] oe_core_i,
- output logic [NumIOs-1:0] in_core_o,
-
- // To padring side
- output logic [NumIOs-1:0] out_padring_o,
- output logic [NumIOs-1:0] oe_padring_o,
- input logic [NumIOs-1:0] in_padring_i,
-
- // USB breakouts for bronze
- output logic usb_pullup_p_en_o,
- output logic usb_pullup_n_en_o,
- input logic usb_diff_input_i
-);
-
- // Note that we do not tie off the enable signal, since it
- // is connected to a GPIO such that the core can determine
- // whether the JTAG is enabled or not.
- logic jtag_en;
- assign jtag_en = in_padring_i[JtagEnIdx] == JtagEnPolarity;
-
- // Inputs taps
- assign jtag_tck_o = (jtag_en) ? in_padring_i[TckIdx] : 1'b0;
- assign jtag_tms_o = (jtag_en) ? in_padring_i[TmsIdx] : 1'b0;
- assign jtag_trst_no = (jtag_en) ? in_padring_i[TrstIdx] : 1'b1;
- assign jtag_srst_no = (jtag_en) ? in_padring_i[SrstIdx] : 1'b1;
- assign jtag_tdi_o = (jtag_en) ? in_padring_i[TdiIdx] : 1'b0;
-
- // Input tie-off muxes
- for (genvar k = 0; k < NumIOs; k++) begin : gen_input_tie_off
- if (k == TckIdx || k == TmsIdx || k == TrstIdx || k == SrstIdx || k == TdiIdx ||
- k == TdoIdx) begin : gen_jtag_signal
- assign in_core_o[k] = (jtag_en) ? TieOffValues[k] : in_padring_i[k];
-
- end else if (k == UsbDIdx && ConnectUSB) begin : gen_usb_diff_in
- logic unused_in;
- assign unused_in = in_padring_i[k];
- assign in_core_o[k] = usb_diff_input_i;
- end else begin : gen_other_inputs
- assign in_core_o[k] = in_padring_i[k];
- end
- end
-
- // Override TDO output
- for (genvar k = 0; k < NumIOs; k++) begin : gen_output_mux
- if (k == TdoIdx) begin : gen_tdo
- assign out_padring_o[k] = (jtag_en) ? jtag_tdo_i : out_core_i[k];
- assign oe_padring_o[k] = (jtag_en) ? 1'b1 : oe_core_i[k];
- end else begin : gen_other_outputs
- assign out_padring_o[k] = out_core_i[k];
- assign oe_padring_o[k] = oe_core_i[k];
- end
- end
-
- // Other USB output taps for Bronze
- assign usb_pullup_p_en_o = out_core_i[UsbDpPuIdx] & oe_core_i[UsbDpPuIdx];
- assign usb_pullup_n_en_o = out_core_i[UsbDnPuIdx] & oe_core_i[UsbDnPuIdx];
-
- ////////////////
- // Assertions //
- ////////////////
-
- `ASSERT_INIT(JtagEnIdxRange_A, JtagEnIdx >= 0 && JtagEnIdx < NumIOs)
- `ASSERT_INIT(TckIdxRange_A, TckIdx >= 0 && TckIdx < NumIOs)
- `ASSERT_INIT(TmsIdxRange_A, TmsIdx >= 0 && TmsIdx < NumIOs)
- `ASSERT_INIT(TrstIdxRange_A, TrstIdx >= 0 && TrstIdx < NumIOs)
- `ASSERT_INIT(SrstIdxRange_A, SrstIdx >= 0 && SrstIdx < NumIOs)
- `ASSERT_INIT(TdiIdxRange_A, TdiIdx >= 0 && TdiIdx < NumIOs)
- `ASSERT_INIT(TdoIdxRange_A, TdoIdx >= 0 && TdoIdx < NumIOs)
-
-endmodule : jtag_mux
