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/*
* PicoSoC - A simple example SoC using PicoRV32
*
* Copyright (C) 2017 Clifford Wolf <clifford@clifford.at>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Revision 1, July 2019: Added signals to drive flash_clk and flash_csb
* output enable (inverted), tied to reset so that the flash is completely
* isolated from the processor when the processor is in reset.
*
* Also: Made ram_wenb a 4-bit bus so that the memory access can be made
* byte-wide for byte-wide instructions.
*/
`ifdef PICORV32_V
`error "mgmt_soc.v must be read before picorv32.v!"
`endif
`define PICORV32_REGS mgmt_soc_regs
`include "picorv32.v"
`include "spimemio.v"
`include "simpleuart.v"
`include "simple_spi_master.v"
`include "counter_timer.v"
`include "wb_intercon.v"
`include "mem_wb.v"
`include "gpio_wb.v"
`include "sysctrl.v"
`include "la_wb.v"
`include "mprj_ctrl.v"
`include "convert_gpio_sigs.v"
module mgmt_soc (
`ifdef LVS
inout vdd1v8, /* 1.8V domain */
inout vss,
`endif
input pll_clk,
input ext_clk,
input ext_clk_sel,
input clk,
input resetn,
// Trap state from CPU
output trap,
// GPIO (one pin)
output gpio_out_pad, // Connect to out on gpio pad
input gpio_in_pad, // Connect to in on gpio pad
output gpio_mode0_pad, // Connect to dm[0] on gpio pad
output gpio_mode1_pad, // Connect to dm[2] on gpio pad
output gpio_outenb_pad, // Connect to oe_n on gpio pad
output gpio_inenb_pad, // Connect to inp_dis on gpio pad
// LA signals
input [127:0] la_input, // From Mega-Project to cpu
output [127:0] la_output, // From CPU to Mega-Project
output [127:0] la_oen, // LA output enable (active low)
// Mega-Project I/O Configuration (serial load)
output mprj_io_loader_resetn,
output mprj_io_loader_clock,
output mprj_io_loader_data,
// Mega-Project pad data (when management SoC controls the pad)
input [MPRJ_IO_PADS-1:0] mgmt_in_data,
output [MPRJ_IO_PADS-1:0] mgmt_out_data,
// IRQ
input irq_spi, // IRQ from standalone SPI
// Flash memory control (SPI master)
output flash_csb,
output flash_clk,
output flash_csb_oeb,
output flash_clk_oeb,
output flash_io0_oeb,
output flash_io1_oeb,
output flash_io2_oeb,
output flash_io3_oeb,
output flash_csb_ieb,
output flash_clk_ieb,
output flash_io0_ieb,
output flash_io1_ieb,
output flash_io2_ieb,
output flash_io3_ieb,
output flash_io0_do,
output flash_io1_do,
output flash_io2_do,
output flash_io3_do,
input flash_io0_di,
input flash_io1_di,
input flash_io2_di,
input flash_io3_di,
// SPI pass-thru mode
input pass_thru_mgmt,
input pass_thru_mgmt_csb,
input pass_thru_mgmt_sck,
input pass_thru_mgmt_sdi,
output pass_thru_mgmt_sdo,
// WB MI A (Mega project)
input mprj_ack_i,
input [31:0] mprj_dat_i,
output mprj_cyc_o,
output mprj_stb_o,
output mprj_we_o,
output [3:0] mprj_sel_o,
output [31:0] mprj_adr_o,
output [31:0] mprj_dat_o,
// WB MI B (xbar)
input [31:0] xbar_dat_i,
input xbar_ack_i,
output xbar_cyc_o,
output xbar_stb_o,
output xbar_we_o,
output [3:0] xbar_sel_o,
output [31:0] xbar_adr_o,
output [31:0] xbar_dat_o
);
/* Memory reverted back to 256 words while memory has to be synthesized */
parameter integer MEM_WORDS = 8192;
parameter [31:0] STACKADDR = (4*MEM_WORDS); // end of memory
parameter [31:0] PROGADDR_RESET = 32'h 1000_0000;
parameter [31:0] PROGADDR_IRQ = 32'h 0000_0000;
// Slaves Base Addresses
parameter RAM_BASE_ADR = 32'h 0000_0000;
parameter FLASH_BASE_ADR = 32'h 1000_0000;
parameter UART_BASE_ADR = 32'h 2000_0000;
parameter GPIO_BASE_ADR = 32'h 2100_0000;
parameter COUNTER_TIMER0_BASE_ADR = 32'h 2110_0000;
parameter COUNTER_TIMER1_BASE_ADR = 32'h 2120_0000;
parameter SPI_MASTER_BASE_ADR = 32'h 2130_0000;
parameter LA_BASE_ADR = 32'h 2200_0000;
parameter MPRJ_CTRL_ADR = 32'h 2300_0000;
parameter MPRJ_BASE_ADR = 32'h 3000_0000; // WB MI A
parameter SYS_BASE_ADR = 32'h 2F00_0000;
parameter FLASH_CTRL_CFG = 32'h 2D00_0000;
parameter XBAR_BASE_ADR = 32'h 8000_0000;
// UART
parameter UART_CLK_DIV = 8'h00;
parameter UART_DATA = 8'h04;
// SPI Master
parameter SPI_MASTER_CONFIG = 8'h00;
parameter SPI_MASTER_DATA = 8'h04;
// Counter-timer 0
parameter COUNTER_TIMER0_CONFIG = 8'h00;
parameter COUNTER_TIMER0_VALUE = 8'h04;
parameter COUNTER_TIMER0_DATA = 8'h08;
// Counter-timer 1
parameter COUNTER_TIMER1_CONFIG = 8'h00;
parameter COUNTER_TIMER1_VALUE = 8'h04;
parameter COUNTER_TIMER1_DATA = 8'h08;
// SOC GPIO
parameter GPIO_DATA = 8'h00;
parameter GPIO_ENA = 8'h04;
parameter GPIO_PU = 8'h08;
parameter GPIO_PD = 8'h0c;
// LA
parameter LA_DATA_0 = 8'h00;
parameter LA_DATA_1 = 8'h04;
parameter LA_DATA_2 = 8'h08;
parameter LA_DATA_3 = 8'h0c;
parameter LA_ENA_0 = 8'h10;
parameter LA_ENA_1 = 8'h14;
parameter LA_ENA_2 = 8'h18;
parameter LA_ENA_3 = 8'h1c;
// Mega-Project Control
parameter MPRJ_IO_PADS = 32;
parameter MPRJ_PWR_PADS = 32;
// System Control Registers
parameter PLL_OUT = 8'h00;
parameter TRAP_OUT = 8'h04;
parameter IRQ7_SRC = 8'h08;
// Wishbone Interconnect
localparam ADR_WIDTH = 32;
localparam DAT_WIDTH = 32;
localparam NUM_SLAVES = 13;
parameter [NUM_SLAVES*ADR_WIDTH-1: 0] ADR_MASK = {
{8'h80, {ADR_WIDTH-8{1'b0}}},
{8'hFF, {ADR_WIDTH-8{1'b0}}},
{8'hFF, {ADR_WIDTH-8{1'b0}}},
{8'hFF, {ADR_WIDTH-8{1'b0}}},
{8'hFF, {ADR_WIDTH-8{1'b0}}},
{8'hFF, {ADR_WIDTH-8{1'b0}}},
{8'hFF, {ADR_WIDTH-8{1'b0}}},
{8'hFF, {ADR_WIDTH-8{1'b0}}},
{8'hFF, {ADR_WIDTH-8{1'b0}}},
{8'hFF, {ADR_WIDTH-8{1'b0}}},
{8'hFF, {ADR_WIDTH-8{1'b0}}},
{8'hFF, {ADR_WIDTH-8{1'b0}}},
{8'hFF, {ADR_WIDTH-8{1'b0}}}
};
parameter [NUM_SLAVES*ADR_WIDTH-1: 0] SLAVE_ADR = {
{XBAR_BASE_ADR},
{SYS_BASE_ADR},
{FLASH_CTRL_CFG},
{MPRJ_BASE_ADR},
{MPRJ_CTRL_ADR},
{LA_BASE_ADR},
{SPI_MASTER_BASE_ADR},
{COUNTER_TIMER1_BASE_ADR},
{COUNTER_TIMER0_BASE_ADR},
{GPIO_BASE_ADR},
{UART_BASE_ADR},
{FLASH_BASE_ADR},
{RAM_BASE_ADR}
};
// The following functions are connected to specific user project
// area pins, when under control of the management area (during
// startup, and when not otherwise programmed for the user project).
// JTAG = jtag_out (inout)
// SDO = sdo_out (output) (shared with SPI master)
// SDI = mgmt_in_data[2] (input) (shared with SPI master)
// CSB = mgmt_in_data[3] (input) (shared with SPI master)
// SCK = mgmt_in_data[4] (input) (shared with SPI master)
// ser_rx = mgmt_in_data[5] (input)
// ser_tx = mgmt_out_data[6] (output)
// irq_pin = mgmt_in_data[7] (input)
// flash_csb = mgmt_out_data[8] (output) (user area flash)
// flash_sck = mgmt_out_data[9] (output) (user area flash)
// flash_io0 = mgmt_in/out_data[10] (input) (user area flash)
// flash_io1 = mgmt_in/out_data[11] (output) (user area flash)
// OEB lines for [0] and [1] are the only ones connected directly to
// the pad. All others have OEB controlled by the configuration bit
// in the control block.
// memory-mapped I/O control registers
wire gpio_pullup; // Intermediate GPIO pullup
wire gpio_pulldown; // Intermediate GPIO pulldown
wire gpio_outenb; // Intermediate GPIO out enable (bar)
wire gpio_out; // Intermediate GPIO output
wire gpio; // GPIO output data
wire gpio_pu; // GPIO pull-up enable
wire gpio_pd; // GPIO pull-down enable
wire gpio_oeb; // GPIO output enable (sense negative)
wire pll_output_dest; // PLL clock output destination
wire trap_output_dest; // Trap signal output destination
wire irq_7_inputsrc; // IRQ 7 source
// GPIO assignments
assign gpio_out = (trap_output_dest == 1'b1) ? trap : gpio;
assign gpio_outenb = (trap_output_dest == 1'b0) ? gpio_oeb : 1'b0;
assign gpio_pullup = (trap_output_dest == 1'b0) ? gpio_pu : 1'b0;
assign gpio_pulldown = (trap_output_dest == 1'b0) ? gpio_pd : 1'b0;
// Convert GPIO signals to sky130_fd_io pad signals
convert_gpio_sigs convert_gpio_bit (
.gpio_out(gpio_out),
.gpio_outenb(gpio_outenb),
.gpio_pu(gpio_pullup),
.gpio_pd(gpio_pulldown),
.gpio_out_pad(gpio_out_pad),
.gpio_outenb_pad(gpio_outenb_pad),
.gpio_inenb_pad(gpio_inenb_pad),
.gpio_mode1_pad(gpio_mode1_pad),
.gpio_mode0_pad(gpio_mode0_pad)
);
reg [31:0] irq;
wire irq_7;
wire irq_stall;
wire irq_uart;
wire irq_spi_master;
wire irq_counter_timer0;
wire irq_counter_timer1;
assign irq_stall = 0;
assign irq_7 = (irq_7_inputsrc == 1'b1) ? mgmt_in_data[7] : 1'b0;
always @* begin
irq = 0;
irq[3] = irq_stall;
irq[4] = irq_uart;
irq[6] = irq_spi;
irq[7] = irq_7;
irq[9] = irq_spi_master;
irq[10] = irq_counter_timer0;
irq[11] = irq_counter_timer1;
end
// Assumption : no syscon module and wb_clk is the clock coming from the chip pin ?
assign wb_clk_i = clk;
assign wb_rst_i = ~resetn; // Redundant
// Wishbone Master
wire [31:0] cpu_adr_o;
wire [31:0] cpu_dat_i;
wire [3:0] cpu_sel_o;
wire cpu_we_o;
wire cpu_cyc_o;
wire cpu_stb_o;
wire [31:0] cpu_dat_o;
wire cpu_ack_i;
assign xbar_cyc_o = cpu_cyc_o;
assign xbar_we_o = cpu_we_o;
assign xbar_sel_o = cpu_sel_o;
assign xbar_adr_o = cpu_adr_o;
assign xbar_dat_o = cpu_dat_o;
picorv32_wb #(
.STACKADDR(STACKADDR),
.PROGADDR_RESET(PROGADDR_RESET),
.PROGADDR_IRQ(PROGADDR_IRQ),
.BARREL_SHIFTER(1),
.COMPRESSED_ISA(1),
.ENABLE_MUL(1),
.ENABLE_DIV(1),
.ENABLE_IRQ(1),
.ENABLE_IRQ_QREGS(0)
) cpu (
.wb_clk_i (wb_clk_i),
.wb_rst_i (wb_rst_i),
.trap (trap),
.irq (irq),
.mem_instr(mem_instr),
.wbm_adr_o(cpu_adr_o),
.wbm_dat_i(cpu_dat_i),
.wbm_stb_o(cpu_stb_o),
.wbm_ack_i(cpu_ack_i),
.wbm_cyc_o(cpu_cyc_o),
.wbm_dat_o(cpu_dat_o),
.wbm_we_o(cpu_we_o),
.wbm_sel_o(cpu_sel_o)
);
// Wishbone Slave SPIMEMIO
wire spimemio_flash_stb_i;
wire spimemio_flash_ack_o;
wire [31:0] spimemio_flash_dat_o;
wire spimemio_cfg_stb_i;
wire spimemio_cfg_ack_o;
wire [31:0] spimemio_cfg_dat_o;
spimemio_wb spimemio (
.wb_clk_i(wb_clk_i),
.wb_rst_i(wb_rst_i),
.wb_adr_i(cpu_adr_o),
.wb_dat_i(cpu_dat_o),
.wb_sel_i(cpu_sel_o),
.wb_we_i(cpu_we_o),
.wb_cyc_i(cpu_cyc_o),
// FLash Slave
.wb_flash_stb_i(spimemio_flash_stb_i),
.wb_flash_ack_o(spimemio_flash_ack_o),
.wb_flash_dat_o(spimemio_flash_dat_o),
// Config Register Slave
.wb_cfg_stb_i(spimemio_cfg_stb_i),
.wb_cfg_ack_o(spimemio_cfg_ack_o),
.wb_cfg_dat_o(spimemio_cfg_dat_o),
.pass_thru(pass_thru_mgmt),
.pass_thru_csb(pass_thru_mgmt_csb),
.pass_thru_sck(pass_thru_mgmt_sck),
.pass_thru_sdi(pass_thru_mgmt_sdi),
.pass_thru_sdo(pass_thru_mgmt_sdo),
.flash_csb (flash_csb),
.flash_clk (flash_clk),
.flash_csb_oeb (flash_csb_oeb),
.flash_clk_oeb (flash_clk_oeb),
.flash_io0_oeb (flash_io0_oeb),
.flash_io1_oeb (flash_io1_oeb),
.flash_io2_oeb (flash_io2_oeb),
.flash_io3_oeb (flash_io3_oeb),
.flash_csb_ieb (flash_csb_ieb),
.flash_clk_ieb (flash_clk_ieb),
.flash_io0_ieb (flash_io0_ieb),
.flash_io1_ieb (flash_io1_ieb),
.flash_io2_ieb (flash_io2_ieb),
.flash_io3_ieb (flash_io3_ieb),
.flash_io0_do (flash_io0_do),
.flash_io1_do (flash_io1_do),
.flash_io2_do (flash_io2_do),
.flash_io3_do (flash_io3_do),
.flash_io0_di (flash_io0_di),
.flash_io1_di (flash_io1_di),
.flash_io2_di (flash_io2_di),
.flash_io3_di (flash_io3_di)
);
// Wishbone Slave uart
wire uart_stb_i;
wire uart_ack_o;
wire [31:0] uart_dat_o;
wire uart_enabled;
simpleuart_wb #(
.BASE_ADR(UART_BASE_ADR),
.CLK_DIV(UART_CLK_DIV),
.DATA(UART_DATA)
) simpleuart (
// Wishbone Interface
.wb_clk_i(wb_clk_i),
.wb_rst_i(wb_rst_i),
.wb_adr_i(cpu_adr_o),
.wb_dat_i(cpu_dat_o),
.wb_sel_i(cpu_sel_o),
.wb_we_i(cpu_we_o),
.wb_cyc_i(cpu_cyc_o),
.wb_stb_i(uart_stb_i),
.wb_ack_o(uart_ack_o),
.wb_dat_o(uart_dat_o),
.uart_enabled(uart_enabled),
.ser_tx(ser_tx),
.ser_rx(mgmt_in_data[5])
);
// Wishbone SPI master
wire spi_master_stb_i;
wire spi_master_ack_o;
wire [31:0] spi_master_dat_o;
simple_spi_master_wb #(
.BASE_ADR(SPI_MASTER_BASE_ADR),
.CONFIG(SPI_MASTER_CONFIG),
.DATA(SPI_MASTER_DATA)
) simple_spi_master_inst (
// Wishbone Interface
.wb_clk_i(wb_clk_i),
.wb_rst_i(wb_rst_i),
.wb_adr_i(cpu_adr_o),
.wb_dat_i(cpu_dat_o),
.wb_sel_i(cpu_sel_o),
.wb_we_i(cpu_we_o),
.wb_cyc_i(cpu_cyc_o),
.wb_stb_i(spi_master_stb_i),
.wb_ack_o(spi_master_ack_o),
.wb_dat_o(spi_master_dat_o),
.csb(mgmt_out_pre[3]),
.sck(mgmt_out_pre[4]),
.sdi(mgmt_in_data[1]),
.sdo(mgmt_out_pre[2]),
.sdoenb(),
.irq(irq_spi_master)
);
// Wishbone Counter-timer 0
wire counter_timer0_stb_i;
wire counter_timer0_ack_o;
wire [31:0] counter_timer0_dat_o;
counter_timer_wb #(
.BASE_ADR(COUNTER_TIMER0_BASE_ADR),
.CONFIG(COUNTER_TIMER0_CONFIG),
.VALUE(COUNTER_TIMER0_VALUE),
.DATA(COUNTER_TIMER0_DATA)
) counter_timer_0 (
// Wishbone Interface
.wb_clk_i(wb_clk_i),
.wb_rst_i(wb_rst_i),
.wb_adr_i(cpu_adr_o),
.wb_dat_i(cpu_dat_o),
.wb_sel_i(cpu_sel_o),
.wb_we_i(cpu_we_o),
.wb_cyc_i(cpu_cyc_o),
.wb_stb_i(counter_timer0_stb_i),
.wb_ack_o(counter_timer0_ack_o),
.wb_dat_o(counter_timer0_dat_o),
.irq(irq_counter_timer0)
);
// Wishbone Counter-timer 1
wire counter_timer1_stb_i;
wire counter_timer1_ack_o;
wire [31:0] counter_timer1_dat_o;
counter_timer_wb #(
.BASE_ADR(COUNTER_TIMER1_BASE_ADR),
.CONFIG(COUNTER_TIMER1_CONFIG),
.VALUE(COUNTER_TIMER1_VALUE),
.DATA(COUNTER_TIMER1_DATA)
) counter_timer_1 (
// Wishbone Interface
.wb_clk_i(wb_clk_i),
.wb_rst_i(wb_rst_i),
.wb_adr_i(cpu_adr_o),
.wb_dat_i(cpu_dat_o),
.wb_sel_i(cpu_sel_o),
.wb_we_i(cpu_we_o),
.wb_cyc_i(cpu_cyc_o),
.wb_stb_i(counter_timer1_stb_i),
.wb_ack_o(counter_timer1_ack_o),
.wb_dat_o(counter_timer1_dat_o),
.irq(irq_counter_timer1)
);
// Wishbone Slave GPIO Registers
wire gpio_stb_i;
wire gpio_ack_o;
wire [31:0] gpio_dat_o;
gpio_wb #(
.BASE_ADR(GPIO_BASE_ADR),
.GPIO_DATA(GPIO_DATA),
.GPIO_ENA(GPIO_ENA),
.GPIO_PD(GPIO_PD),
.GPIO_PU(GPIO_PU)
) gpio_wb (
.wb_clk_i(wb_clk_i),
.wb_rst_i(wb_rst_i),
.wb_adr_i(cpu_adr_o),
.wb_dat_i(cpu_dat_o),
.wb_sel_i(cpu_sel_o),
.wb_we_i(cpu_we_o),
.wb_cyc_i(cpu_cyc_o),
.wb_stb_i(gpio_stb_i),
.wb_ack_o(gpio_ack_o),
.wb_dat_o(gpio_dat_o),
.gpio_in_pad(gpio_in_pad),
.gpio(gpio),
.gpio_oeb(gpio_oeb),
.gpio_pu(gpio_pu),
.gpio_pd(gpio_pd)
);
// Wishbone Slave System Control Register
wire sys_stb_i;
wire sys_ack_o;
wire [31:0] sys_dat_o;
sysctrl_wb #(
.BASE_ADR(SYS_BASE_ADR),
.PLL_OUT(PLL_OUT),
.TRAP_OUT(TRAP_OUT),
.IRQ7_SRC(IRQ7_SRC)
) sysctrl (
.wb_clk_i(wb_clk_i),
.wb_rst_i(wb_rst_i),
.wb_adr_i(cpu_adr_o),
.wb_dat_i(cpu_dat_o),
.wb_sel_i(cpu_sel_o),
.wb_we_i(cpu_we_o),
.wb_cyc_i(cpu_cyc_o),
.wb_stb_i(sys_stb_i),
.wb_ack_o(sys_ack_o),
.wb_dat_o(sys_dat_o),
.pll_output_dest(pll_output_dest),
.trap_output_dest(trap_output_dest),
.irq_7_inputsrc(irq_7_inputsrc)
);
// Logic Analyzer
wire la_stb_i;
wire la_ack_o;
wire [31:0] la_dat_o;
la_wb #(
.BASE_ADR(LA_BASE_ADR),
.LA_DATA_0(LA_DATA_0),
.LA_DATA_1(LA_DATA_1),
.LA_DATA_3(LA_DATA_3),
.LA_ENA_0(LA_ENA_0),
.LA_ENA_1(LA_ENA_1),
.LA_ENA_2(LA_ENA_2),
.LA_ENA_3(LA_ENA_3)
) la (
.wb_clk_i(wb_clk_i),
.wb_rst_i(wb_rst_i),
.wb_adr_i(cpu_adr_o),
.wb_dat_i(cpu_dat_o),
.wb_sel_i(cpu_sel_o),
.wb_we_i(cpu_we_o),
.wb_cyc_i(cpu_cyc_o),
.wb_stb_i(la_stb_i),
.wb_ack_o(la_ack_o),
.wb_dat_o(la_dat_o),
.la_data(la_output),
.la_data_in(la_input),
.la_oen(la_oen)
);
// WB Slave Mega-Project Control
wire mprj_ctrl_stb_i;
wire mprj_ctrl_ack_o;
wire [31:0] mprj_ctrl_dat_o;
wire [31:0] mgmt_out_pre;
// Bits assigned to specific functions as outputs prevent the
// mprj GPIO-as-output from applying data when that function
// is active
assign mgmt_out_data[MPRJ_IO_PADS-1:7] = mgmt_out_pre[MPRJ_IO_PADS-1:7];
assign mgmt_out_data[6] = uart_enabled ? ser_tx : mgmt_out_pre[6];
assign mgmt_out_data[5:0] = mgmt_out_pre[5:0];
mprj_ctrl_wb #(
.BASE_ADR(MPRJ_CTRL_ADR),
.IO_PADS(MPRJ_IO_PADS),
.PWR_PADS(MPRJ_PWR_PADS)
) mprj_ctrl (
.wb_clk_i(wb_clk_i),
.wb_rst_i(wb_rst_i),
.wb_adr_i(cpu_adr_o),
.wb_dat_i(cpu_dat_o),
.wb_sel_i(cpu_sel_o),
.wb_we_i(cpu_we_o),
.wb_cyc_i(cpu_cyc_o),
.wb_stb_i(mprj_ctrl_stb_i),
.wb_ack_o(mprj_ctrl_ack_o),
.wb_dat_o(mprj_ctrl_dat_o),
.serial_clock(mprj_io_loader_clock),
.serial_resetn(mprj_io_loader_resetn),
.serial_data_out(mprj_io_loader_data),
.mgmt_gpio_out(mgmt_out_pre),
.mgmt_gpio_in(mgmt_in_data)
);
// Wishbone Slave RAM
wire mem_stb_i;
wire mem_ack_o;
wire [31:0] mem_dat_o;
mem_wb #(
.MEM_WORDS(MEM_WORDS)
) soc_mem (
.wb_clk_i(wb_clk_i),
.wb_rst_i(wb_rst_i),
.wb_adr_i(cpu_adr_o),
.wb_dat_i(cpu_dat_o),
.wb_sel_i(cpu_sel_o),
.wb_we_i(cpu_we_o),
.wb_cyc_i(cpu_cyc_o),
.wb_stb_i(mem_stb_i),
.wb_ack_o(mem_ack_o),
.wb_dat_o(mem_dat_o)
);
// Wishbone intercon logic
wb_intercon #(
.AW(ADR_WIDTH),
.DW(DAT_WIDTH),
.NS(NUM_SLAVES),
.ADR_MASK(ADR_MASK),
.SLAVE_ADR(SLAVE_ADR)
) intercon (
// Master Interface
.wbm_adr_i(cpu_adr_o),
.wbm_stb_i(cpu_stb_o),
.wbm_dat_o(cpu_dat_i),
.wbm_ack_o(cpu_ack_i),
// Slaves Interface
.wbs_stb_o({ xbar_stb_o, sys_stb_i, spimemio_cfg_stb_i,
mprj_stb_o, mprj_ctrl_stb_i, la_stb_i,
spi_master_stb_i, counter_timer1_stb_i, counter_timer0_stb_i,
gpio_stb_i, uart_stb_i,
spimemio_flash_stb_i, mem_stb_i }),
.wbs_dat_i({ xbar_dat_i, sys_dat_o, spimemio_cfg_dat_o,
mprj_dat_i, mprj_ctrl_dat_o, la_dat_o,
spi_master_dat_o, counter_timer1_dat_o, counter_timer0_dat_o,
gpio_dat_o, uart_dat_o,
spimemio_flash_dat_o, mem_dat_o }),
.wbs_ack_i({ xbar_ack_i, sys_ack_o, spimemio_cfg_ack_o,
mprj_ack_i, mprj_ctrl_ack_o, la_ack_o,
spi_master_ack_o, counter_timer1_ack_o, counter_timer0_ack_o,
gpio_ack_o, uart_ack_o,
spimemio_flash_ack_o, mem_ack_o })
);
endmodule
// Implementation note:
// Replace the following two modules with wrappers for your SRAM cells.
module mgmt_soc_regs (
input clk, wen,
input [5:0] waddr,
input [5:0] raddr1,
input [5:0] raddr2,
input [31:0] wdata,
output [31:0] rdata1,
output [31:0] rdata2
);
reg [31:0] regs [0:31];
always @(posedge clk)
if (wen) regs[waddr[4:0]] <= wdata;
assign rdata1 = regs[raddr1[4:0]];
assign rdata2 = regs[raddr2[4:0]];
endmodule