separate boot ram, redone memory map, connected uart

2 files changed, 247 insertions, 0 deletions

diff --git a/usrp2/control_lib/Makefile.srcs b/usrp2/control_lib/Makefile.srcs
index 60fb2516d..ad491b83d 100644
--- a/usrp2/control_lib/Makefile.srcs
+++ b/usrp2/control_lib/Makefile.srcs
@@ -44,4 +44,5 @@ longfifo.v \
 shortfifo.v \
 medfifo.v \
 s3a_icap_wb.v \
+bootram.v \
 ))
diff --git a/usrp2/control_lib/bootram.v b/usrp2/control_lib/bootram.v
new file mode 100644
index 000000000..648ccc9ed
--- /dev/null
+++ b/usrp2/control_lib/bootram.v
@@ -0,0 +1,246 @@
+
+// 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 [12:0] if_adr,
+   output [31:0] if_data,
+
+   input [12:0] 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;
+   wire [31:0] DOB0, DOB1, DOB2, DOB3;
+   wire        ENB0, ENB1, ENB2, ENB3;
+   wire [3:0]  WEB;
+   
+   assign if_data = if_adr[12] ? (if_adr[11] ? DOA3 : DOA2) : (if_adr[11] ? DOA1 : DOA0);
+   assign dwb_dat_o = dwb_adr_i[12] ? (dwb_adr_i[11] ? DOA3 : DOA2) : (dwb_adr_i[11] ? DOA1 : DOA0);
+
+   always @(posedge clk)
+     if(dwb_stb_i & ~dwb_ack_o)
+       dwb_ack_o <= 1;
+     else
+       dwb_ack_o <= 0;
+
+   assign ENB0 = dwb_stb_i & (dwb_adr_i[12:11] == 2'b00);
+   assign ENB1 = dwb_stb_i & (dwb_adr_i[12:11] == 2'b01);
+   assign ENB2 = dwb_stb_i & (dwb_adr_i[12:11] == 2'b10);
+   assign ENB3 = dwb_stb_i & (dwb_adr_i[12:11] == 2'b11);
+
+   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'd0),          // Port A 32-bit Data Input
+      .DIPA(4'd0),          // 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'd0),             // 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'd0),          // Port A 32-bit Data Input
+      .DIPA(4'd0),          // 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'd0),             // 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'd0),          // Port A 32-bit Data Input
+      .DIPA(4'd0),          // 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'd0),             // 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'd0),          // Port A 32-bit Data Input
+      .DIPA(4'd0),          // 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'd0),             // 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
+
+endmodule // bootram
+
+/*
+       // The following INIT_xx declarations specify the initial contents of the RAM
+       // Address 0 to 127
+       .INIT_00(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_01(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_02(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_03(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_04(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_05(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_06(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_07(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_08(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_09(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_0A(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_0B(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_0C(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_0D(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_0E(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_0F(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       // Address 128 to 255
+       .INIT_10(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_11(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_12(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_13(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_14(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_15(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_16(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_17(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_18(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_19(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_1A(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_1B(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_1C(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_1D(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_1E(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_1F(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       // Address 256 to 383
+       .INIT_20(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_21(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_22(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_23(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_24(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_25(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_26(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_27(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_28(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_29(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_2A(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_2B(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_2C(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_2D(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_2E(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_2F(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       // Address 384 to 511
+       .INIT_30(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_31(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_32(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_33(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_34(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_35(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_36(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_37(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_38(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_39(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_3A(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_3B(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_3C(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_3D(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_3E(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       .INIT_3F(256’h00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
+       // The next set of INITP_xx are for the parity bits
+       // Address 0 to 127
+       .INITP_00(256’h0000000000000000000000000000000000000000000000000000000000000000),
+       .INITP_01(256’h0000000000000000000000000000000000000000000000000000000000000000),
+       // Address 128 to 255
+       .INITP_02(256’h0000000000000000000000000000000000000000000000000000000000000000),
+       .INITP_03(256’h0000000000000000000000000000000000000000000000000000000000000000),
+       // Address 256 to 383
+       .INITP_04(256’h0000000000000000000000000000000000000000000000000000000000000000),
+       .INITP_05(256’h0000000000000000000000000000000000000000000000000000000000000000),
+       // Address 384 to 511
+       .INITP_06(256’h0000000000000000000000000000000000000000000000000000000000000000),
+       .INITP_07(256’h0000000000000000000000000000000000000000000000000000000000000000)
+*/