verilog/rtl/mgmt_core.v

module mgmt_core #(
	parameter MPRJ_IO_PADS = 32,
	parameter MPRJ_PWR_PADS = 32
) (
`ifdef LVS
	inout vdd1v8,	   
	inout vss,
`endif
	// GPIO (dedicated pad)
	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
	// 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_csb_ieb,
	output flash_clk_ieb,
	output flash_io0_ieb, output flash_io1_ieb,
	output flash_io0_do,
	output flash_io1_do,
	input flash_io0_di,
	input flash_io1_di,
	// Master reset
	input resetb,
	input porb,
	// Clocking
	input clock,
	// 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  
	// Housekeeping SPI
	output sdo_out,
	output sdo_outenb,
	// JTAG
	output jtag_out,
	output jtag_outenb,
	// Mega-Project Control Signals
	input [MPRJ_IO_PADS-1:0] mgmt_in_data,
	output [MPRJ_IO_PADS-1:0] mgmt_out_data,
	output mprj_io_loader_resetn,
	output mprj_io_loader_clock,
	output mprj_io_loader_data,
	// 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 Switch 
    	input xbar_ack_i,
    	input [31:0] xbar_dat_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,

    	output core_clk,
    	output user_clk,
    	output core_rstn,

	// Metal programmed user ID / mask revision vector
	input [31:0] mask_rev
);
    	wire ext_clk_sel;
    	wire pll_clk, pll_clk90;
    	wire ext_reset;
	wire hk_connect;

	caravel_clocking clocking(
	`ifdef LVS
		.vdd1v8(vdd1v8),
		.vss(vss),
	`endif		
		.ext_clk_sel(ext_clk_sel),
		.ext_clk(clock),
		.pll_clk(pll_clk),
		.pll_clk90(pll_clk90),
		.resetb(resetb), 
		.sel(spi_pll_sel),
		.sel2(spi_pll90_sel),
		.ext_reset(ext_reset),	// From housekeeping SPI
		.core_clk(core_clk),
		.user_clk(user_clk),
		.resetb_sync(core_rstn)
	);

	// 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       = 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.

	mgmt_soc #(
	    .MPRJ_IO_PADS(MPRJ_IO_PADS),
	    .MPRJ_PWR_PADS(MPRJ_PWR_PADS)
	) soc (
	
    	    `ifdef LVS
        	.vdd1v8(vdd1v8),
        	.vss(vss),
    	    `endif
		.clk(core_clk),
		.resetn(core_rstn),
		.trap(trap),
		// GPIO
		.gpio_out_pad(gpio_out_pad),
		.gpio_in_pad(gpio_in_pad),
		.gpio_mode0_pad(gpio_mode0_pad),
		.gpio_mode1_pad(gpio_mode1_pad),
		.gpio_outenb_pad(gpio_outenb_pad),
		.gpio_inenb_pad(gpio_inenb_pad),
		.irq_spi(irq_spi),
		// Flash
		.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),
		// SPI pass-through to/from SPI flash controller
		.pass_thru_mgmt(pass_thru_reset),
		.pass_thru_mgmt_csb(pass_thru_mgmt_csb),
		.pass_thru_mgmt_sck(pass_thru_mgmt_sck),
		.pass_thru_mgmt_sdi(pass_thru_mgmt_sdi),
		.pass_thru_mgmt_sdo(pass_thru_mgmt_sdo),
		// SPI master->slave direct connection
		.hk_connect(hk_connect),
		// Logic Analyzer
		.la_input(la_input),
		.la_output(la_output),
		.la_oen(la_oen),
		// Mega-Project I/O Configuration
		.mprj_io_loader_resetn(mprj_io_loader_resetn),
		.mprj_io_loader_clock(mprj_io_loader_clock),
		.mprj_io_loader_data(mprj_io_loader_data),
		// I/O data
		.mgmt_in_data(mgmt_in_data),
		.mgmt_out_data(mgmt_out_data),
		// Mega Project Slave ports (WB MI A)
		.mprj_cyc_o(mprj_cyc_o),
		.mprj_stb_o(mprj_stb_o),
		.mprj_we_o(mprj_we_o),
		.mprj_sel_o(mprj_sel_o),
		.mprj_adr_o(mprj_adr_o),
		.mprj_dat_o(mprj_dat_o),
		.mprj_ack_i(mprj_ack_i),
		.mprj_dat_i(mprj_dat_i),
		// Crossbar Switch
        	.xbar_cyc_o(xbar_cyc_o),
        	.xbar_stb_o(xbar_stb_o),
        	.xbar_we_o (xbar_we_o),
        	.xbar_sel_o(xbar_sel_o),
        	.xbar_adr_o(xbar_adr_o),
        	.xbar_dat_o(xbar_dat_o),
        	.xbar_ack_i(xbar_ack_i),
        	.xbar_dat_i(xbar_dat_i)
    	);
    
    	digital_pll pll (
	    `ifdef LVS
		.vdd(vdd1v8),
		.vss(vss),
	    `endif
		.resetb(resetb),
		.enable(spi_pll_ena),
		.osc(clock),
		.clockp({pll_clk, pll_clk90}),
		.div(spi_pll_div),
		.dco(spi_pll_dco_ena),
		.ext_trim(spi_pll_trim)
    	);

	// JTAG (to be implemented)
	wire jtag_out = 1'b0;
	wire jtag_outenb = 1'b1;

	// Housekeeping SPI vectors
	wire [4:0]  spi_pll_div;
	wire [2:0]  spi_pll_sel;
	wire [2:0]  spi_pll90_sel;
	wire [25:0] spi_pll_trim;

	// Housekeeping SPI (SPI slave module)
	housekeeping_spi housekeeping (
	    `ifdef LVS
		.vdd(vdd1v8),
		.vss(vss),
	    `endif
	    .RSTB(porb),
	    .SCK((hk_connect) ? mgmt_out_data[4] : mgmt_in_data[4]),
	    .SDI((hk_connect) ? mgmt_out_data[2] : mgmt_in_data[2]),
	    .CSB((hk_connect) ? mgmt_out_data[3] : mgmt_in_data[3]),
	    .SDO(sdo_out),
	    .sdo_enb(sdo_outenb),
	    .pll_dco_ena(spi_pll_dco_ena),
	    .pll_sel(spi_pll_sel),
	    .pll90_sel(spi_pll90_sel),
	    .pll_div(spi_pll_div),
	    .pll_ena(spi_pll_ena),
            .pll_trim(spi_pll_trim),
	    .pll_bypass(ext_clk_sel),
	    .irq(irq_spi),
	    .reset(ext_reset),
	    .trap(trap),
	    .mask_rev_in(mask_rev),
    	    .pass_thru_reset(pass_thru_reset),
    	    .pass_thru_mgmt_sck(pass_thru_mgmt_sck),
    	    .pass_thru_mgmt_csb(pass_thru_mgmt_csb),
    	    .pass_thru_mgmt_sdi(pass_thru_mgmt_sdi),
    	    .pass_thru_mgmt_sdo(pass_thru_mgmt_sdo),
    	    .pass_thru_user_sck(mgmt_out_data[9]),
    	    .pass_thru_user_csb(mgmt_out_data[8]),
    	    .pass_thru_user_sdi(mgmt_out_data[10]),
    	    .pass_thru_user_sdo(mgmt_in_data[11])
	);

endmodule