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Diffstat (limited to 'fpga/usrp2/control_lib/bootram.v')
| -rw-r--r-- | fpga/usrp2/control_lib/bootram.v | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/fpga/usrp2/control_lib/bootram.v b/fpga/usrp2/control_lib/bootram.v new file mode 100644 index 000000000..7821fbc4c --- /dev/null +++ b/fpga/usrp2/control_lib/bootram.v @@ -0,0 +1,312 @@ +// +// Copyright 2011 Ettus Research LLC +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <http://www.gnu.org/licenses/>. +// + + +// Boot RAM for S3A, 8KB, dual port + +// RAMB16BWE_S36_S36: 512 x 32 + 4 Parity bits byte-wide write Dual-Port RAM +// Spartan-3A Xilinx HDL Libraries Guide, version 10.1.1 + +module bootram + (input clk, input reset, + input [13:0] if_adr, + output [31:0] if_data, + + input [13:0] dwb_adr_i, + input [31:0] dwb_dat_i, + output [31:0] dwb_dat_o, + input dwb_we_i, + output reg dwb_ack_o, + input dwb_stb_i, + input [3:0] dwb_sel_i); + + wire [31:0] DOA0, DOA1, DOA2, DOA3, DOA4, DOA5, DOA6, DOA7; + wire [31:0] DOB0, DOB1, DOB2, DOB3, DOB4, DOB5, DOB6, DOB7; + wire ENB0, ENB1, ENB2, ENB3, ENB4, ENB5, ENB6, ENB7; + wire [3:0] WEB; + + reg [2:0] delayed_if_bank; + always @(posedge clk) + delayed_if_bank <= if_adr[13:11]; + + assign if_data = delayed_if_bank[2] ? + (delayed_if_bank[1] ? (delayed_if_bank[0] ? DOA7 : DOA6) : (delayed_if_bank[0] ? DOA5 : DOA4)) + : (delayed_if_bank[1] ? (delayed_if_bank[0] ? DOA3 : DOA2) : (delayed_if_bank[0] ? DOA1 : DOA0)); + + + assign dwb_dat_o = dwb_adr_i[13] ? + (dwb_adr_i[12] ? (dwb_adr_i[11] ? DOB7 : DOB6) : (dwb_adr_i[11] ? DOB5 : DOB4)) + : (dwb_adr_i[12] ? (dwb_adr_i[11] ? DOB3 : DOB2) : (dwb_adr_i[11] ? DOB1 : DOB0)); + + always @(posedge clk) + if(reset) + dwb_ack_o <= 0; + else + dwb_ack_o <= dwb_stb_i & ~dwb_ack_o; + + assign ENB0 = dwb_stb_i & (dwb_adr_i[13:11] == 3'b000); + assign ENB1 = dwb_stb_i & (dwb_adr_i[13:11] == 3'b001); + assign ENB2 = dwb_stb_i & (dwb_adr_i[13:11] == 3'b010); + assign ENB3 = dwb_stb_i & (dwb_adr_i[13:11] == 3'b011); + assign ENB4 = dwb_stb_i & (dwb_adr_i[13:11] == 3'b100); + assign ENB5 = dwb_stb_i & (dwb_adr_i[13:11] == 3'b101); + assign ENB6 = dwb_stb_i & (dwb_adr_i[13:11] == 3'b110); + assign ENB7 = dwb_stb_i & (dwb_adr_i[13:11] == 3'b111); + + assign WEB = {4{dwb_we_i}} & dwb_sel_i; + + RAMB16BWE_S36_S36 + #(.INIT_A(36'h000000000), // Value of output RAM registers on Port A at startup + .INIT_B(36'h000000000), // Value of output RAM registers on Port B at startup + .SIM_COLLISION_CHECK("ALL"), // "NONE", "WARNING_ONLY", "GENERATE_X_ONLY", "ALL" + .SRVAL_A(36'h000000000), // Port A output value upon SSR assertion + .SRVAL_B(36'h000000000), // Port B output value upon SSR assertion + .WRITE_MODE_A("WRITE_FIRST"), // WRITE_FIRST, READ_FIRST or NO_CHANGE + .WRITE_MODE_B("WRITE_FIRST")) // WRITE_FIRST, READ_FIRST or NO_CHANGE + RAM0 + (.DOA(DOA0), // Port A 32-bit Data Output + .DOPA(), // Port A 4-bit Parity Output + .ADDRA(if_adr[10:2]), // Port A 9-bit Address Input + .CLKA(clk), // Port A 1-bit Clock + .DIA(32'hffffffff), // Port A 32-bit Data Input + .DIPA(4'hf), // Port A 4-bit parity Input + .ENA(1'b1), // Port A 1-bit RAM Enable Input + .SSRA(1'b0), // Port A 1-bit Synchronous Set/Reset Input + .WEA(1'b0), // Port A 4-bit Write Enable Input + + .DOB(DOB0), // Port B 32-bit Data Output + .DOPB(), // Port B 4-bit Parity Output + .ADDRB(dwb_adr_i[10:2]), // Port B 9-bit Address Input + .CLKB(clk), // Port B 1-bit Clock + .DIB(dwb_dat_i), // Port B 32-bit Data Input + .DIPB(4'hf), // Port-B 4-bit parity Input + .ENB(ENB0), // Port B 1-bit RAM Enable Input + .SSRB(1'b0), // Port B 1-bit Synchronous Set/Reset Input + .WEB(WEB) // Port B 4-bit Write Enable Input + ); // End of RAMB16BWE_S36_S36_inst instantiation + + RAMB16BWE_S36_S36 + #(.INIT_A(36'h000000000), // Value of output RAM registers on Port A at startup + .INIT_B(36'h000000000), // Value of output RAM registers on Port B at startup + .SIM_COLLISION_CHECK("ALL"), // "NONE", "WARNING_ONLY", "GENERATE_X_ONLY", "ALL" + .SRVAL_A(36'h000000000), // Port A output value upon SSR assertion + .SRVAL_B(36'h000000000), // Port B output value upon SSR assertion + .WRITE_MODE_A("WRITE_FIRST"), // WRITE_FIRST, READ_FIRST or NO_CHANGE + .WRITE_MODE_B("WRITE_FIRST")) // WRITE_FIRST, READ_FIRST or NO_CHANGE + RAM1 + (.DOA(DOA1), // Port A 32-bit Data Output + .DOPA(), // Port A 4-bit Parity Output + .ADDRA(if_adr[10:2]), // Port A 9-bit Address Input + .CLKA(clk), // Port A 1-bit Clock + .DIA(32'hffffffff), // Port A 32-bit Data Input + .DIPA(4'hf), // Port A 4-bit parity Input + .ENA(1'b1), // Port A 1-bit RAM Enable Input + .SSRA(1'b0), // Port A 1-bit Synchronous Set/Reset Input + .WEA(1'b0), // Port A 4-bit Write Enable Input + + .DOB(DOB1), // Port B 32-bit Data Output + .DOPB(), // Port B 4-bit Parity Output + .ADDRB(dwb_adr_i[10:2]), // Port B 9-bit Address Input + .CLKB(clk), // Port B 1-bit Clock + .DIB(dwb_dat_i), // Port B 32-bit Data Input + .DIPB(4'hf), // Port-B 4-bit parity Input + .ENB(ENB1), // Port B 1-bit RAM Enable Input + .SSRB(1'b0), // Port B 1-bit Synchronous Set/Reset Input + .WEB(WEB) // Port B 4-bit Write Enable Input + ); // End of RAMB16BWE_S36_S36_inst instantiation + + RAMB16BWE_S36_S36 + #(.INIT_A(36'h000000000), // Value of output RAM registers on Port A at startup + .INIT_B(36'h000000000), // Value of output RAM registers on Port B at startup + .SIM_COLLISION_CHECK("ALL"), // "NONE", "WARNING_ONLY", "GENERATE_X_ONLY", "ALL" + .SRVAL_A(36'h000000000), // Port A output value upon SSR assertion + .SRVAL_B(36'h000000000), // Port B output value upon SSR assertion + .WRITE_MODE_A("WRITE_FIRST"), // WRITE_FIRST, READ_FIRST or NO_CHANGE + .WRITE_MODE_B("WRITE_FIRST")) // WRITE_FIRST, READ_FIRST or NO_CHANGE + RAM2 + (.DOA(DOA2), // Port A 32-bit Data Output + .DOPA(), // Port A 4-bit Parity Output + .ADDRA(if_adr[10:2]), // Port A 9-bit Address Input + .CLKA(clk), // Port A 1-bit Clock + .DIA(32'hffffffff), // Port A 32-bit Data Input + .DIPA(4'hf), // Port A 4-bit parity Input + .ENA(1'b1), // Port A 1-bit RAM Enable Input + .SSRA(1'b0), // Port A 1-bit Synchronous Set/Reset Input + .WEA(1'b0), // Port A 4-bit Write Enable Input + + .DOB(DOB2), // Port B 32-bit Data Output + .DOPB(), // Port B 4-bit Parity Output + .ADDRB(dwb_adr_i[10:2]), // Port B 9-bit Address Input + .CLKB(clk), // Port B 1-bit Clock + .DIB(dwb_dat_i), // Port B 32-bit Data Input + .DIPB(4'hf), // Port-B 4-bit parity Input + .ENB(ENB2), // Port B 1-bit RAM Enable Input + .SSRB(1'b0), // Port B 1-bit Synchronous Set/Reset Input + .WEB(WEB) // Port B 4-bit Write Enable Input + ); // End of RAMB16BWE_S36_S36_inst instantiation + + RAMB16BWE_S36_S36 + #(.INIT_A(36'h000000000), // Value of output RAM registers on Port A at startup + .INIT_B(36'h000000000), // Value of output RAM registers on Port B at startup + .SIM_COLLISION_CHECK("ALL"), // "NONE", "WARNING_ONLY", "GENERATE_X_ONLY", "ALL" + .SRVAL_A(36'h000000000), // Port A output value upon SSR assertion + .SRVAL_B(36'h000000000), // Port B output value upon SSR assertion + .WRITE_MODE_A("WRITE_FIRST"), // WRITE_FIRST, READ_FIRST or NO_CHANGE + .WRITE_MODE_B("WRITE_FIRST")) // WRITE_FIRST, READ_FIRST or NO_CHANGE + RAM3 + (.DOA(DOA3), // Port A 32-bit Data Output + .DOPA(), // Port A 4-bit Parity Output + .ADDRA(if_adr[10:2]), // Port A 9-bit Address Input + .CLKA(clk), // Port A 1-bit Clock + .DIA(32'hffffffff), // Port A 32-bit Data Input + .DIPA(4'hf), // Port A 4-bit parity Input + .ENA(1'b1), // Port A 1-bit RAM Enable Input + .SSRA(1'b0), // Port A 1-bit Synchronous Set/Reset Input + .WEA(1'b0), // Port A 4-bit Write Enable Input + + .DOB(DOB3), // Port B 32-bit Data Output + .DOPB(), // Port B 4-bit Parity Output + .ADDRB(dwb_adr_i[10:2]), // Port B 9-bit Address Input + .CLKB(clk), // Port B 1-bit Clock + .DIB(dwb_dat_i), // Port B 32-bit Data Input + .DIPB(4'hf), // Port-B 4-bit parity Input + .ENB(ENB3), // Port B 1-bit RAM Enable Input + .SSRB(1'b0), // Port B 1-bit Synchronous Set/Reset Input + .WEB(WEB) // Port B 4-bit Write Enable Input + ); // End of RAMB16BWE_S36_S36_inst instantiation + + RAMB16BWE_S36_S36 + #(.INIT_A(36'h000000000), // Value of output RAM registers on Port A at startup + .INIT_B(36'h000000000), // Value of output RAM registers on Port B at startup + .SIM_COLLISION_CHECK("ALL"), // "NONE", "WARNING_ONLY", "GENERATE_X_ONLY", "ALL" + .SRVAL_A(36'h000000000), // Port A output value upon SSR assertion + .SRVAL_B(36'h000000000), // Port B output value upon SSR assertion + .WRITE_MODE_A("WRITE_FIRST"), // WRITE_FIRST, READ_FIRST or NO_CHANGE + .WRITE_MODE_B("WRITE_FIRST")) // WRITE_FIRST, READ_FIRST or NO_CHANGE + RAM4 + (.DOA(DOA4), // Port A 32-bit Data Output + .DOPA(), // Port A 4-bit Parity Output + .ADDRA(if_adr[10:2]), // Port A 9-bit Address Input + .CLKA(clk), // Port A 1-bit Clock + .DIA(32'hffffffff), // Port A 32-bit Data Input + .DIPA(4'hf), // Port A 4-bit parity Input + .ENA(1'b1), // Port A 1-bit RAM Enable Input + .SSRA(1'b0), // Port A 1-bit Synchronous Set/Reset Input + .WEA(1'b0), // Port A 4-bit Write Enable Input + + .DOB(DOB4), // Port B 32-bit Data Output + .DOPB(), // Port B 4-bit Parity Output + .ADDRB(dwb_adr_i[10:2]), // Port B 9-bit Address Input + .CLKB(clk), // Port B 1-bit Clock + .DIB(dwb_dat_i), // Port B 32-bit Data Input + .DIPB(4'hf), // Port-B 4-bit parity Input + .ENB(ENB4), // Port B 1-bit RAM Enable Input + .SSRB(1'b0), // Port B 1-bit Synchronous Set/Reset Input + .WEB(WEB) // Port B 4-bit Write Enable Input + ); // End of RAMB16BWE_S36_S36_inst instantiation + + RAMB16BWE_S36_S36 + #(.INIT_A(36'h000000000), // Value of output RAM registers on Port A at startup + .INIT_B(36'h000000000), // Value of output RAM registers on Port B at startup + .SIM_COLLISION_CHECK("ALL"), // "NONE", "WARNING_ONLY", "GENERATE_X_ONLY", "ALL" + .SRVAL_A(36'h000000000), // Port A output value upon SSR assertion + .SRVAL_B(36'h000000000), // Port B output value upon SSR assertion + .WRITE_MODE_A("WRITE_FIRST"), // WRITE_FIRST, READ_FIRST or NO_CHANGE + .WRITE_MODE_B("WRITE_FIRST")) // WRITE_FIRST, READ_FIRST or NO_CHANGE + RAM5 + (.DOA(DOA5), // Port A 32-bit Data Output + .DOPA(), // Port A 4-bit Parity Output + .ADDRA(if_adr[10:2]), // Port A 9-bit Address Input + .CLKA(clk), // Port A 1-bit Clock + .DIA(32'hffffffff), // Port A 32-bit Data Input + .DIPA(4'hf), // Port A 4-bit parity Input + .ENA(1'b1), // Port A 1-bit RAM Enable Input + .SSRA(1'b0), // Port A 1-bit Synchronous Set/Reset Input + .WEA(1'b0), // Port A 4-bit Write Enable Input + + .DOB(DOB5), // Port B 32-bit Data Output + .DOPB(), // Port B 4-bit Parity Output + .ADDRB(dwb_adr_i[10:2]), // Port B 9-bit Address Input + .CLKB(clk), // Port B 1-bit Clock + .DIB(dwb_dat_i), // Port B 32-bit Data Input + .DIPB(4'hf), // Port-B 4-bit parity Input + .ENB(ENB5), // Port B 1-bit RAM Enable Input + .SSRB(1'b0), // Port B 1-bit Synchronous Set/Reset Input + .WEB(WEB) // Port B 4-bit Write Enable Input + ); // End of RAMB16BWE_S36_S36_inst instantiation + + RAMB16BWE_S36_S36 + #(.INIT_A(36'h000000000), // Value of output RAM registers on Port A at startup + .INIT_B(36'h000000000), // Value of output RAM registers on Port B at startup + .SIM_COLLISION_CHECK("ALL"), // "NONE", "WARNING_ONLY", "GENERATE_X_ONLY", "ALL" + .SRVAL_A(36'h000000000), // Port A output value upon SSR assertion + .SRVAL_B(36'h000000000), // Port B output value upon SSR assertion + .WRITE_MODE_A("WRITE_FIRST"), // WRITE_FIRST, READ_FIRST or NO_CHANGE + .WRITE_MODE_B("WRITE_FIRST")) // WRITE_FIRST, READ_FIRST or NO_CHANGE + RAM6 + (.DOA(DOA6), // Port A 32-bit Data Output + .DOPA(), // Port A 4-bit Parity Output + .ADDRA(if_adr[10:2]), // Port A 9-bit Address Input + .CLKA(clk), // Port A 1-bit Clock + .DIA(32'hffffffff), // Port A 32-bit Data Input + .DIPA(4'hf), // Port A 4-bit parity Input + .ENA(1'b1), // Port A 1-bit RAM Enable Input + .SSRA(1'b0), // Port A 1-bit Synchronous Set/Reset Input + .WEA(1'b0), // Port A 4-bit Write Enable Input + + .DOB(DOB6), // Port B 32-bit Data Output + .DOPB(), // Port B 4-bit Parity Output + .ADDRB(dwb_adr_i[10:2]), // Port B 9-bit Address Input + .CLKB(clk), // Port B 1-bit Clock + .DIB(dwb_dat_i), // Port B 32-bit Data Input + .DIPB(4'hf), // Port-B 4-bit parity Input + .ENB(ENB6), // Port B 1-bit RAM Enable Input + .SSRB(1'b0), // Port B 1-bit Synchronous Set/Reset Input + .WEB(WEB) // Port B 4-bit Write Enable Input + ); // End of RAMB16BWE_S36_S36_inst instantiation + + RAMB16BWE_S36_S36 + #(.INIT_A(36'h000000000), // Value of output RAM registers on Port A at startup + .INIT_B(36'h000000000), // Value of output RAM registers on Port B at startup + .SIM_COLLISION_CHECK("ALL"), // "NONE", "WARNING_ONLY", "GENERATE_X_ONLY", "ALL" + .SRVAL_A(36'h000000000), // Port A output value upon SSR assertion + .SRVAL_B(36'h000000000), // Port B output value upon SSR assertion + .WRITE_MODE_A("WRITE_FIRST"), // WRITE_FIRST, READ_FIRST or NO_CHANGE + .WRITE_MODE_B("WRITE_FIRST")) // WRITE_FIRST, READ_FIRST or NO_CHANGE + RAM7 + (.DOA(DOA7), // Port A 32-bit Data Output + .DOPA(), // Port A 4-bit Parity Output + .ADDRA(if_adr[10:2]), // Port A 9-bit Address Input + .CLKA(clk), // Port A 1-bit Clock + .DIA(32'hffffffff), // Port A 32-bit Data Input + .DIPA(4'hf), // Port A 4-bit parity Input + .ENA(1'b1), // Port A 1-bit RAM Enable Input + .SSRA(1'b0), // Port A 1-bit Synchronous Set/Reset Input + .WEA(1'b0), // Port A 4-bit Write Enable Input + + .DOB(DOB7), // Port B 32-bit Data Output + .DOPB(), // Port B 4-bit Parity Output + .ADDRB(dwb_adr_i[10:2]), // Port B 9-bit Address Input + .CLKB(clk), // Port B 1-bit Clock + .DIB(dwb_dat_i), // Port B 32-bit Data Input + .DIPB(4'hf), // Port-B 4-bit parity Input + .ENB(ENB7), // Port B 1-bit RAM Enable Input + .SSRB(1'b0), // Port B 1-bit Synchronous Set/Reset Input + .WEB(WEB) // Port B 4-bit Write Enable Input + ); // End of RAMB16BWE_S36_S36_inst instantiation + +endmodule // bootram |