| // Copyright lowRISC contributors. |
| // Licensed under the Apache License, Version 2.0, see LICENSE for details. |
| // SPDX-License-Identifier: Apache-2.0 |
| |
| module top_englishbreakfast_cw305 #( |
| // Path to a VMEM file containing the contents of the boot ROM, which will be |
| // baked into the FPGA bitstream. |
| parameter BootRomInitFile = "boot_rom_fpga_nexysvideo.32.vmem" |
| ) ( |
| // Clock and Reset |
| input IO_CLK, |
| input IO_RST_N, |
| // JTAG interface |
| inout IO_DPS0, // IO_JTCK, IO_SDCK |
| inout IO_DPS3, // IO_JTMS, IO_SDCSB |
| inout IO_DPS1, // IO_JTDI, IO_SDSDI |
| inout IO_DPS4, // IO_JTRST_N, |
| inout IO_DPS5, // IO_JSRST_N, |
| inout IO_DPS2, // IO_JTDO, IO_SDO |
| inout IO_DPS6, // JTAG=1, SPI=0 |
| inout IO_DPS7, // BOOTSTRAP=1 |
| // UART interface |
| inout IO_URX, |
| inout IO_UTX, |
| // USB interface |
| inout IO_USB_DP0, |
| inout IO_USB_DN0, |
| inout IO_USB_SENSE0, |
| inout IO_USB_DNPULLUP0, |
| inout IO_USB_DPPULLUP0, |
| // GPIO x 16 interface |
| inout IO_GP0, |
| inout IO_GP1, |
| inout IO_GP2, |
| inout IO_GP3, |
| inout IO_GP4, |
| inout IO_GP5, |
| inout IO_GP6, |
| inout IO_GP7, |
| inout IO_GP8, |
| inout IO_GP9, |
| inout IO_GP10, |
| inout IO_GP11, |
| inout IO_GP12, |
| inout IO_GP13, |
| inout IO_GP14, |
| inout IO_GP15, |
| // ChipWhisperer IO |
| output TIO_CLKOUT, |
| output IO_UTX_DEBUG |
| ); |
| |
| import top_englishbreakfast_pkg::*; |
| |
| ////////////////////// |
| // Padring Instance // |
| ////////////////////// |
| |
| |
| logic clk_main, clk_usb_48mhz, clk_aon, rst_n; |
| logic [pinmux_reg_pkg::NMioPads-1:0][pinmux_reg_pkg::AttrDw-1:0] mio_attr; |
| logic [pinmux_reg_pkg::NDioPads-1:0][pinmux_reg_pkg::AttrDw-1:0] dio_attr; |
| logic [pinmux_reg_pkg::NMioPads-1:0] mio_out_core, mio_out_padring; |
| logic [pinmux_reg_pkg::NMioPads-1:0] mio_oe_core, mio_oe_padring; |
| logic [pinmux_reg_pkg::NMioPads-1:0] mio_in_core, mio_in_padring; |
| logic [pinmux_reg_pkg::NDioPads-1:0] dio_out_core, dio_out_padring; |
| logic [pinmux_reg_pkg::NDioPads-1:0] dio_oe_core, dio_oe_padring; |
| logic [pinmux_reg_pkg::NDioPads-1:0] dio_in_core, dio_in_padring; |
| |
| padring #( |
| // MIOs 43:34 and 31:20 are currently not |
| // connected to pads and hence tied off |
| .ConnectMioIn ( 44'h003_000F_FFFF ), |
| .ConnectMioOut ( 44'h003_000F_FFFF ), |
| // Tied off DIOs: |
| // 2: usbdev_d |
| // 3: usbdev_suspend |
| // 4: usbdev_tx_mode |
| // 7: usbdev_se |
| // 9-14: spi_host all signals |
| // 17-18: spi_device unused quad signals |
| .ConnectDioIn ( 21'h19_8163 ), |
| .ConnectDioOut ( 21'h19_8163 ), |
| // MIO pad types |
| .MioPadVariant ( { // RBox |
| 2'd3, // IOR13 -- open drain |
| 2'd3, // IOR12 -- open drain |
| 2'd3, // IOR11 -- open drain |
| 2'd3, // IOR10 -- open drain |
| 2'd3, // IOR9 -- open drain |
| 2'd3, // IOR8 -- open drain |
| 2'd0, // IOR7 -- bidir |
| 2'd0, // IOR6 -- bidir |
| 2'd0, // IOR5 -- bidir |
| 2'd0, // IOR4 -- bidir |
| 2'd0, // IOR3 -- bidir |
| 2'd0, // IOR2 -- bidir |
| 2'd0, // IOR1 -- bidir |
| 2'd0, // IOR0 -- bidir |
| // Bank C |
| 2'd3, // IOC11 -- open drain |
| 2'd3, // IOC10 -- open drain |
| 2'd3, // IOC9 -- open drain |
| 2'd3, // IOC8 -- open drain |
| 2'd0, // IOC7 -- bidir |
| 2'd0, // IOC6 -- bidir |
| 2'd0, // IOC5 -- bidir |
| 2'd0, // IOC4 -- bidir |
| 2'd0, // IOC3 -- bidir |
| 2'd0, // IOC2 -- bidir |
| 2'd0, // IOC1 -- bidir |
| 2'd0, // IOC0 -- bidir |
| // Bank B |
| 2'd3, // IOB11 -- open drain |
| 2'd3, // IOB10 -- open drain |
| 2'd3, // IOB9 -- open drain |
| 2'd3, // IOB8 -- open drain |
| 2'd0, // IOB7 -- birid |
| 2'd0, // IOB6 -- birid |
| 2'd0, // IOB5 -- birid |
| 2'd0, // IOB4 -- birid |
| 2'd0, // IOB3 -- bidir |
| 2'd0, // IOB2 -- bidir |
| 2'd0, // IOB1 -- bidir |
| 2'd0, // IOB0 -- bidir |
| // Bank A |
| 2'd3, // IOA5 -- open drain |
| 2'd3, // IOA4 -- open drain |
| 2'd0, // IOA3 -- bidir |
| 2'd0, // IOA2 -- bidir |
| 2'd0, // IOA1 -- bidir |
| 2'd0 // IOA0 -- bidir |
| } ), |
| // DIO pad types |
| .DioPadVariant ( { 2'd1, // SPI_DEV_CLK -- input only |
| 2'd1, // SPI_DEV_CS_L -- input only |
| 2'd0, // SPI_DEV_D3 -- bidir |
| 2'd0, // SPI_DEV_D2 -- bidir |
| 2'd0, // SPI_DEV_D1 -- bidir |
| 2'd0, // SPI_DEV_D0 -- bidir |
| 2'd0, // SPI_HOST_CLK -- bidir |
| 2'd0, // SPI_HOST_CS_L -- bidir |
| 2'd0, // SPI_HOST_D3 -- bidir |
| 2'd0, // SPI_HOST_D2 -- bidir |
| 2'd0, // SPI_HOST_D1 -- bidir |
| 2'd0, // SPI_HOST_D0 -- bidir |
| 2'd0, // unused |
| 2'd0, // unused |
| 2'd0, // unused |
| 2'd0, // unused |
| 2'd0, // unused |
| 2'd0, // unused |
| 2'd0, // unused |
| 2'd2, // USB_P -- tolerant |
| 2'd2 // USB_N -- tolerant |
| } ) |
| ) padring ( |
| // Clk / Rst |
| .clk_pad_i ( 1'b0 ), |
| .rst_pad_ni ( 1'b0 ), |
| .clk_o ( ), |
| .rst_no ( ), |
| .cc1_i ( 1'b0 ), |
| .cc2_i ( 1'b0 ), |
| // MIO Pads |
| .mio_pad_io ( { 10'bz, // Note that 43:34 are currently not mapped |
| IO_UTX, |
| IO_URX, |
| 12'bz, // Note that 31:20 are currently not mapped |
| IO_DPS5, // Use GPIO19 to pass JTAG_SRST |
| IO_DPS4, // Use GPIO18 to pass JTAG_TRST |
| IO_DPS7, // Use GPIO17 to pass rom boot_strap indication |
| IO_DPS6, // Use GPIO16 to pass SPI/JTAG control flag |
| IO_GP15, |
| IO_GP14, |
| IO_GP13, |
| IO_GP12, |
| IO_GP11, |
| IO_GP10, |
| IO_GP9, |
| IO_GP8, |
| IO_GP7, |
| IO_GP6, |
| IO_GP5, |
| IO_GP4, |
| IO_GP3, |
| IO_GP2, |
| IO_GP1, |
| IO_GP0 } ), |
| // DIO Pads |
| .dio_pad_io ( { IO_DPS0, // SCK, JTAG_TCK |
| IO_DPS3, // CSB, JTAG_TMS |
| 2'bz, // quad SPI device signals are not mapped |
| IO_DPS2, // SDO, JTAG_TDO |
| IO_DPS1, // SDI, JTAG_TDI |
| 6'bz, // SPI host signals are not mapped |
| IO_USB_SENSE0, |
| 1'bz, // usbdev_se0 |
| IO_USB_DPPULLUP0, |
| IO_USB_DNPULLUP0, |
| 1'bz, // usbdev_tx_mode |
| 1'bz, // usbdev_suspend |
| 1'bz, // usbdev_d |
| IO_USB_DP0, |
| IO_USB_DN0 } ), |
| // Muxed IOs |
| .mio_in_o ( mio_in_padring ), |
| .mio_out_i ( mio_out_padring ), |
| .mio_oe_i ( mio_oe_padring ), |
| // Dedicated IOs |
| .dio_in_o ( dio_in_padring ), |
| .dio_out_i ( dio_out_padring ), |
| .dio_oe_i ( dio_oe_padring ), |
| // Pad Attributes |
| .mio_attr_i ( mio_attr ), |
| .dio_attr_i ( dio_attr ) |
| ); |
| |
| ////////////////////// |
| // JTAG Overlay Mux // |
| ////////////////////// |
| |
| logic jtag_trst_n, jtag_srst_n; |
| logic jtag_tck, jtag_tck_buf, jtag_tms, jtag_tdi, jtag_tdo; |
| |
| localparam int NumIOs = pinmux_reg_pkg::NMioPads + |
| pinmux_reg_pkg::NDioPads; |
| |
| // This specifies the tie-off values of the muxed MIO/DIOs |
| // when the JTAG is active. SPI CSB is active low. |
| localparam logic [NumIOs-1:0] TieOffValues = NumIOs'(1'b1 << ( |
| pinmux_reg_pkg::NMioPads + top_englishbreakfast_pkg::TopEnglishbreakfastDioPinSpiDeviceCsb)); |
| |
| // TODO: this is a temporary solution. JTAG will eventually be selected and |
| // qualified inside the pinmux, based on strap and lifecycle state. |
| // Parameterizeable JTAG overlay mux. |
| // Unaffected indices are just passed through. |
| jtag_mux #( |
| .NumIOs ( NumIOs ), |
| .TieOffValues ( TieOffValues ), |
| .JtagEnIdx ( 16 ), // MIO 16 |
| .JtagEnPolarity ( 1 ), |
| .TckIdx ( pinmux_reg_pkg::NMioPads + |
| top_englishbreakfast_pkg::TopEnglishbreakfastDioPinSpiDeviceSck ), |
| .TmsIdx ( pinmux_reg_pkg::NMioPads + |
| top_englishbreakfast_pkg::TopEnglishbreakfastDioPinSpiDeviceCsb ), |
| .TrstIdx ( 18 ), // MIO 18 |
| .SrstIdx ( 19 ), // MIO 19 |
| .TdiIdx ( pinmux_reg_pkg::NMioPads + |
| top_englishbreakfast_pkg::TopEnglishbreakfastDioPinSpiDeviceSd0 ), |
| .TdoIdx ( pinmux_reg_pkg::NMioPads + |
| top_englishbreakfast_pkg::TopEnglishbreakfastDioPinSpiDeviceSd1 ) |
| ) jtag_mux ( |
| // To JTAG inside core |
| .jtag_tck_o ( jtag_tck ), |
| .jtag_tms_o ( jtag_tms ), |
| .jtag_trst_no ( jtag_trst_n ), |
| .jtag_srst_no ( jtag_srst_n ), |
| .jtag_tdi_o ( jtag_tdi ), |
| .jtag_tdo_i ( jtag_tdo ), |
| // To core side |
| .out_core_i ( {dio_out_core, mio_out} ), |
| .oe_core_i ( {dio_oe_core, mio_oe_core} ), |
| .in_core_o ( {dio_in_core, mio_in_core} ), |
| // To padring side |
| .out_padring_o ( {dio_out_padring, mio_out_padring} ), |
| .oe_padring_o ( {dio_oe_padring, mio_oe_padring } ), |
| .in_padring_i ( {dio_in_padring, mio_in_padring } ), |
| // USB breakouts |
| .usb_pullup_p_en_o ( ), |
| .usb_pullup_n_en_o ( ), |
| .usb_diff_input_i ( 1'b0 ) |
| ); |
| |
| //////////////////////////////// |
| // JTAG clock buffer for FPGA // |
| //////////////////////////////// |
| |
| BUFG jtag_buf ( |
| .I (jtag_tck), |
| .O (jtag_tck_buf) |
| ); |
| |
| ////////////////// |
| // PLL for FPGA // |
| ////////////////// |
| |
| clkgen_xil7series # ( |
| .AddClkBuf(0) |
| ) clkgen ( |
| .IO_CLK, |
| .IO_RST_N, |
| .jtag_srst_n, |
| .clk_main(clk_main), |
| .clk_48MHz(clk_usb_48mhz), |
| .clk_aon(clk_aon), |
| .rst_n(rst_n) |
| ); |
| |
| ////////////////////// |
| // Top-level design // |
| ////////////////////// |
| pwrmgr_pkg::pwr_ast_rsp_t ast_base_pwr; |
| ast_pkg::ast_alert_req_t ast_base_alerts; |
| ast_pkg::ast_status_t ast_base_status; |
| |
| assign ast_base_pwr.slow_clk_val = 1'b1; |
| assign ast_base_pwr.core_clk_val = 1'b1; |
| assign ast_base_pwr.io_clk_val = 1'b1; |
| assign ast_base_pwr.usb_clk_val = 1'b1; |
| assign ast_base_pwr.main_pok = 1'b1; |
| |
| ast_pkg::ast_dif_t silent_alert = '{ |
| p: 1'b0, |
| n: 1'b1 |
| }; |
| assign ast_base_alerts.alerts = {ast_pkg::NumAlerts{silent_alert}}; |
| assign ast_base_status.io_pok = {ast_pkg::NumIoRails{1'b1}}; |
| |
| // the rst_ni pin only goes to AST |
| // the rest of the logic generates reset based on the 'pok' signal. |
| // for verilator purposes, make these two the same. |
| lc_ctrl_pkg::lc_tx_t lc_clk_bypass; |
| |
| top_englishbreakfast #( |
| .AesMasking(1'b1), |
| .AesSBoxImpl(aes_pkg::SBoxImplDom), |
| .SecAesStartTriggerDelay(40), |
| .SecAesAllowForcingMasks(1'b1), |
| .SecAesSkipPRNGReseeding(1'b1), |
| .IbexRegFile(ibex_pkg::RegFileFPGA), |
| .IbexICache(0), |
| .IbexPipeLine(1), |
| .BootRomInitFile(BootRomInitFile) |
| ) top_englishbreakfast ( |
| // Clocks, resets |
| .rst_ni ( rst_n ), |
| .clk_main_i ( clk_main ), |
| .clk_io_i ( clk_main ), |
| .clk_usb_i ( clk_usb_48mhz ), |
| .clk_aon_i ( clk_aon ), |
| .pwrmgr_ast_req_o ( ), |
| .pwrmgr_ast_rsp_i ( ast_base_pwr ), |
| .sensor_ctrl_ast_alert_req_i ( ast_base_alerts ), |
| .sensor_ctrl_ast_alert_rsp_o ( ), |
| .sensor_ctrl_ast_status_i ( ast_base_status ), |
| .usbdev_usb_ref_val_o ( ), |
| .usbdev_usb_ref_pulse_o ( ), |
| .flash_bist_enable_i ( 1'b0 ), |
| .flash_power_down_h_i ( 1'b0 ), |
| .flash_power_ready_h_i ( 1'b1 ), |
| .flash_test_mode_a_i ('0), |
| .flash_test_voltage_h_i ('0), |
| .lc_clk_byp_req_o ( lc_clk_bypass ), |
| .lc_clk_byp_ack_i ( lc_clk_bypass ), |
| .clks_ast_o ( ), |
| .rsts_ast_o ( ), |
| |
| // JTAG |
| .jtag_tck_i ( jtag_tck_buf ), |
| .jtag_tms_i ( jtag_tms ), |
| .jtag_trst_ni ( jtag_trst_n ), |
| .jtag_tdi_i ( jtag_tdi ), |
| .jtag_tdo_o ( jtag_tdo ), |
| |
| // Multiplexed I/O |
| .mio_in_i ( mio_in_core ), |
| .mio_out_o ( mio_out_core ), |
| .mio_oe_o ( mio_oe_core ), |
| |
| // Dedicated I/O |
| .dio_in_i ( dio_in_core ), |
| .dio_out_o ( dio_out_core ), |
| .dio_oe_o ( dio_oe_core ), |
| |
| // Pad attributes |
| .mio_attr_o ( mio_attr ), |
| .dio_attr_o ( dio_attr ), |
| |
| // DFT signals |
| .scan_rst_ni ( 1'b1 ), |
| .scan_en_i ( 1'b0 ), |
| .scanmode_i ( lc_ctrl_pkg::Off ) |
| ); |
| |
| ////////////////////////////////////// |
| // Generate precise capture trigger // |
| ////////////////////////////////////// |
| |
| // GPIO15 is used as capture trigger. |
| localparam int MioIdxTrigger = 15; |
| logic [pinmux_reg_pkg::NMioPads-1:0] mio_out; |
| |
| for (genvar i = 0; i < pinmux_reg_pkg::NMioPads; i++) begin : gen_mio_out |
| if (i == MioIdxTrigger) begin |
| // To obtain a more precise capture trigger for side-channel analysis, we only forward the |
| // software-controlled capture trigger when the AES module is actually busy (performing |
| // either encryption/decryption or clearing internal registers). |
| assign mio_out[i] = mio_out_core[i] & ~top_englishbreakfast.clkmgr_aon_idle[clkmgr_pkg::Aes]; |
| end else begin |
| assign mio_out[i] = mio_out_core[i]; |
| end |
| end |
| |
| ////////////////////// |
| // ChipWhisperer IO // |
| ////////////////////// |
| |
| // Clock ouput to capture board. |
| assign TIO_CLKOUT = IO_CLK; |
| |
| // UART Tx for debugging. The UART itself is connected to the capture board. |
| assign IO_UTX_DEBUG = top_englishbreakfast.cio_uart0_tx_d2p; |
| |
| endmodule : top_englishbreakfast_cw305 |
