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-- # #
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-- # #
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-- # Check the processor's data sheet for more information: docs/NEORV32.pdf #
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-- # Check the processor's data sheet for more information: docs/NEORV32.pdf #
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-- # ********************************************************************************************* #
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-- # ********************************************************************************************* #
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-- # BSD 3-Clause License #
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-- # BSD 3-Clause License #
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-- # #
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-- # #
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-- # Copyright (c) 2020, Stephan Nolting. All rights reserved. #
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-- # Copyright (c) 2021, Stephan Nolting. All rights reserved. #
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-- # #
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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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-- # 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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-- # permitted provided that the following conditions are met: #
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-- # #
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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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-- # 1. Redistributions of source code must retain the above copyright notice, this list of #
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CPU_EXTENSION_RISCV_Zifencei : boolean := false; -- implement instruction stream sync.?
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CPU_EXTENSION_RISCV_Zifencei : boolean := false; -- implement instruction stream sync.?
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-- Extension Options --
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-- Extension Options --
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FAST_MUL_EN : boolean := false; -- use DSPs for M extension's multiplier
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FAST_MUL_EN : boolean := false; -- use DSPs for M extension's multiplier
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FAST_SHIFT_EN : boolean := false; -- use barrel shifter for shift operations
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FAST_SHIFT_EN : boolean := false; -- use barrel shifter for shift operations
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-- Physical Memory Protection (PMP) --
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-- Physical Memory Protection (PMP) --
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PMP_USE : boolean := false; -- implement PMP?
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PMP_NUM_REGIONS : natural := 0; -- number of regions (0..64)
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PMP_MIN_GRANULARITY : natural := 64*1024; -- minimal region granularity in bytes, has to be a power of 2, min 8 bytes
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-- Hardware Performance Monitors (HPM) --
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HPM_NUM_CNTS : natural := 0; -- number of inmplemnted HPM counters (0..29)
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-- Internal Instruction memory --
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-- Internal Instruction memory --
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MEM_INT_IMEM_USE : boolean := true; -- implement processor-internal instruction memory
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MEM_INT_IMEM_USE : boolean := true; -- implement processor-internal instruction memory
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MEM_INT_IMEM_SIZE : natural := 16*1024; -- size of processor-internal instruction memory in bytes
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MEM_INT_IMEM_SIZE : natural := 16*1024; -- size of processor-internal instruction memory in bytes
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MEM_INT_IMEM_ROM : boolean := false; -- implement processor-internal instruction memory as ROM
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MEM_INT_IMEM_ROM : boolean := false; -- implement processor-internal instruction memory as ROM
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-- Internal Data memory --
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-- Internal Data memory --
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CPU_EXTENSION_RISCV_Zifencei => CPU_EXTENSION_RISCV_Zifencei, -- implement instruction stream sync.?
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CPU_EXTENSION_RISCV_Zifencei => CPU_EXTENSION_RISCV_Zifencei, -- implement instruction stream sync.?
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-- Extension Options --
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-- Extension Options --
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FAST_MUL_EN => FAST_MUL_EN, -- use DSPs for M extension's multiplier
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FAST_MUL_EN => FAST_MUL_EN, -- use DSPs for M extension's multiplier
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FAST_SHIFT_EN => FAST_SHIFT_EN, -- use barrel shifter for shift operations
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FAST_SHIFT_EN => FAST_SHIFT_EN, -- use barrel shifter for shift operations
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-- Physical Memory Protection (PMP) --
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-- Physical Memory Protection (PMP) --
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PMP_USE => PMP_USE -- implement PMP?
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PMP_NUM_REGIONS => PMP_NUM_REGIONS, -- number of regions (0..64)
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PMP_MIN_GRANULARITY => PMP_MIN_GRANULARITY, -- minimal region granularity in bytes, has to be a power of 2, min 8 bytes
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-- Hardware Performance Monitors (HPM) --
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HPM_NUM_CNTS => HPM_NUM_CNTS -- number of inmplemnted HPM counters (0..29)
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)
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)
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port map (
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port map (
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-- global control --
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-- global control --
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clk_i => clk_i, -- global clock, rising edge
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clk_i => clk_i, -- global clock, rising edge
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rstn_i => sys_rstn, -- global reset, low-active, async
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rstn_i => sys_rstn, -- global reset, low-active, async
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