119 lines
5.9 KiB
Coq
119 lines
5.9 KiB
Coq
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// #################################################################################################
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// # << NEORV32 - Minimal setup with the bootloader enabled >> #
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// # ********************************************************************************************* #
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// # BSD 3-Clause License #
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// # #
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// # Copyright (c) 2023, Stephan Nolting. All rights reserved. #
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// # #
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// # Redistribution and use in source and binary forms, with or without modification, are #
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// # permitted provided that the following conditions are met: #
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// # #
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// # 1. Redistributions of source code must retain the above copyright notice, this list of #
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// # conditions and the following disclaimer. #
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// # #
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// # 2. Redistributions in binary form must reproduce the above copyright notice, this list of #
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// # conditions and the following disclaimer in the documentation and/or other materials #
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// # provided with the distribution. #
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// # #
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// # 3. Neither the name of the copyright holder nor the names of its contributors may be used to #
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// # endorse or promote products derived from this software without specific prior written #
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// # permission. #
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// # #
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// # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS #
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// # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF #
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// # MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE #
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// # COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, #
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// # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE #
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// # GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED #
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// # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING #
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// # NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED #
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// # OF THE POSSIBILITY OF SUCH DAMAGE. #
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// # ********************************************************************************************* #
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// # The NEORV32 Processor - https://github.com/stnolting/neorv32 (c) Stephan Nolting #
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// #################################################################################################
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// no timescale needed
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module neorv32_ProcessorTop_MinimalBoot(
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input wire clk_i,
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input wire rstn_i,
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output wire [3:0] gpio_o,
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output wire uart_txd_o,
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input wire uart_rxd_i,
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output wire [IO_PWM_NUM_CH - 1:0] pwm_o
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);
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// General --
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parameter [31:0] CLOCK_FREQUENCY=0;
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parameter MEM_INT_IMEM_EN=true;
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parameter [31:0] MEM_INT_IMEM_SIZE=64 * 1024;
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parameter MEM_INT_DMEM_EN=true;
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parameter [31:0] MEM_INT_DMEM_SIZE=64 * 1024;
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parameter [31:0] IO_GPIO_NUM=0;
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parameter [31:0] IO_PWM_NUM_CH=3;
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// number of PWM channels to implement (0..12); 0 = disabled
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// Global control --
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// GPIO (available if IO_GPIO_EN = true) --
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// primary UART0 (available if IO_UART0_EN = true) --
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// UART0 send data
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// UART0 receive data
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// PWM (available if IO_PWM_NUM_CH > 0) --
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// internal IO connection --
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wire [63:0] con_gpio_o;
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wire [11:0] con_pwm_o;
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// The core of the problem ----------------------------------------------------------------
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// -------------------------------------------------------------------------------------------
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neorv32_top #(
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// General --
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.CLOCK_FREQUENCY(CLOCK_FREQUENCY),
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// clock frequency of clk_i in Hz
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.INT_BOOTLOADER_EN(true),
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// boot configuration: true = boot explicit bootloader; false = boot from int/ext (I)MEM
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// Internal Instruction memory --
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.MEM_INT_IMEM_EN(MEM_INT_IMEM_EN),
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// implement processor-internal instruction memory
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.MEM_INT_IMEM_SIZE(MEM_INT_IMEM_SIZE),
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// size of processor-internal instruction memory in bytes
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// Internal Data memory --
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.MEM_INT_DMEM_EN(MEM_INT_DMEM_EN),
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// implement processor-internal data memory
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.MEM_INT_DMEM_SIZE(MEM_INT_DMEM_SIZE),
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// size of processor-internal data memory in bytes
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// Processor peripherals --
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.IO_GPIO_NUM(IO_GPIO_NUM),
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// number of GPIO input/output pairs (0..64)
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.IO_MTIME_EN(true),
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// implement machine system timer (MTIME)?
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.IO_UART0_EN(true),
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// implement primary universal asynchronous receiver/transmitter (UART0)?
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.IO_PWM_NUM_CH(IO_PWM_NUM_CH))
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neorv32_inst(
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// Global control --
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.clk_i(clk_i),
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// global clock, rising edge
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.rstn_i(rstn_i),
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// global reset, low-active, async
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// GPIO (available if IO_GPIO_NUM > 0) --
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.gpio_o(con_gpio_o),
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// parallel output
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.gpio_i({broken{0}}),
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// parallel input
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// primary UART0 (available if IO_UART0_EN = true) --
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.uart0_txd_o(uart_txd_o),
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// UART0 send data
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.uart0_rxd_i(uart_rxd_i),
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// UART0 receive data
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// PWM (available if IO_PWM_NUM_CH > 0) --
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.pwm_o(con_pwm_o));
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// GPIO --
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assign gpio_o = con_gpio_o[3:0];
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// PWM --
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assign pwm_o = con_pwm_o[IO_PWM_NUM_CH - 1:0];
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endmodule
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