diff --git a/neorv32_aes/rtl/neorv32_ProcessorTop_MinimalUart.vhd b/neorv32_aes/rtl/neorv32_ProcessorTop_MinimalUart.vhd deleted file mode 100644 index 412383e..0000000 --- a/neorv32_aes/rtl/neorv32_ProcessorTop_MinimalUart.vhd +++ /dev/null @@ -1,259 +0,0 @@ --- ################################################################################################# --- # << NEORV32 - Minimal setup without a bootloader bur UART0 enabled >> # --- # ********************************************************************************************* # --- # BSD 3-Clause License # --- # # --- # Copyright (c) 2022, Torsten Meissner. All rights reserved. # --- # # --- # Redistribution and use in source and binary forms, with or without modification, are # --- # permitted provided that the following conditions are met: # --- # # --- # 1. Redistributions of source code must retain the above copyright notice, this list of # --- # conditions and the following disclaimer. # --- # # --- # 2. Redistributions in binary form must reproduce the above copyright notice, this list of # --- # conditions and the following disclaimer in the documentation and/or other materials # --- # provided with the distribution. # --- # # --- # 3. Neither the name of the copyright holder nor the names of its contributors may be used to # --- # endorse or promote products derived from this software without specific prior written # --- # permission. # --- # # --- # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS # --- # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF # --- # MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE # --- # COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, # --- # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE # --- # GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED # --- # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING # --- # NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED # --- # OF THE POSSIBILITY OF SUCH DAMAGE. # --- # ********************************************************************************************* # --- # The NEORV32 Processor - https://github.com/stnolting/neorv32 (c) Stephan Nolting # --- ################################################################################################# - -library ieee; -use ieee.std_logic_1164.all; -use ieee.numeric_std.all; - -library neorv32; - -entity neorv32_top is - generic ( - CLOCK_FREQUENCY : natural := 0; -- clock frequency of clk_i in Hz - HW_THREAD_ID : natural := 0; -- hardware thread id (32-bit) - - -- RISC-V CPU Extensions -- - CPU_EXTENSION_RISCV_C : boolean := false; -- implement compressed extension? - CPU_EXTENSION_RISCV_E : boolean := false; -- implement embedded RF extension? - CPU_EXTENSION_RISCV_M : boolean := false; -- implement mul/div extension? - CPU_EXTENSION_RISCV_U : boolean := false; -- implement user mode extension? - CPU_EXTENSION_RISCV_Zfinx : boolean := false; -- implement 32-bit floating-point extension (using INT regs!) - CPU_EXTENSION_RISCV_Zicsr : boolean := true; -- implement CSR system? - CPU_EXTENSION_RISCV_Zifencei : boolean := false; -- implement instruction stream sync.? - - -- Extension Options -- - FAST_MUL_EN : boolean := false; -- use DSPs for M extension's multiplier - FAST_SHIFT_EN : boolean := false; -- use barrel shifter for shift operations - - -- Physical Memory Protection (PMP) -- - PMP_NUM_REGIONS : natural := 0; -- number of regions (0..16) - PMP_MIN_GRANULARITY : natural := 4; -- minimal region granularity in bytes, has to be a power of 2, min 4 bytes - - -- Hardware Performance Monitors (HPM) -- - HPM_NUM_CNTS : natural := 0; -- number of implemented HPM counters (0..29) - HPM_CNT_WIDTH : natural := 40; -- total size of HPM counters (0..64) - - -- Internal Instruction memory -- - MEM_INT_IMEM_EN : boolean := true; -- implement processor-internal instruction memory - MEM_INT_IMEM_SIZE : natural := 8*1024; -- size of processor-internal instruction memory in bytes - - -- Internal Data memory -- - MEM_INT_DMEM_EN : boolean := true; -- implement processor-internal data memory - MEM_INT_DMEM_SIZE : natural := 64*1024; -- size of processor-internal data memory in bytes - - -- Internal Cache memory -- - ICACHE_EN : boolean := false; -- implement instruction cache - ICACHE_NUM_BLOCKS : natural := 4; -- i-cache: number of blocks (min 1), has to be a power of 2 - ICACHE_BLOCK_SIZE : natural := 64; -- i-cache: block size in bytes (min 4), has to be a power of 2 - ICACHE_ASSOCIATIVITY : natural := 1; -- i-cache: associativity / number of sets (1=direct_mapped), has to be a power of 2 - - -- Processor peripherals -- - IO_GPIO_EN : boolean := true; -- implement general purpose input/output port unit (GPIO)? - IO_MTIME_EN : boolean := true; -- implement machine system timer (MTIME)? - IO_UART0_EN : boolean := true; -- implement primary universal asynchronous receiver/transmitter (UART0)? - IO_PWM_NUM_CH : natural := 3; -- number of PWM channels to implement (0..60); 0 = disabled - IO_WDT_EN : boolean := true; -- implement watch dog timer (WDT)? - IO_TRNG_EN : boolean := true; -- implement true random number generator (TRNG)? - IO_CFS_EN : boolean := true -- implement custom functions subsystem (CFS)? - ); - port ( - clk_i : in std_logic; - rstn_i : in std_logic; - - -- GPIO (available if IO_GPIO_EN = true) -- - gpio_o : out std_ulogic_vector(3 downto 0); - - -- primary UART0 (available if IO_UART0_EN = true) -- - uart_txd_o : out std_ulogic; -- UART0 send data - uart_rxd_i : in std_ulogic := '0' -- UART0 receive data - ); -end entity; - -architecture rtl of neorv32_top is - - -- internal IO connection -- - signal con_gpio_o : std_ulogic_vector(63 downto 0); - signal con_pwm_o : std_ulogic_vector(59 downto 0); - -begin - - -- IO Connection -------------------------------------------------------------------------- - -- ------------------------------------------------------------------------------------------- - - -- GPIO -- - gpio_o <= con_gpio_o(3 downto 0); - - -- The core of the problem ---------------------------------------------------------------- - -- ------------------------------------------------------------------------------------------- - neorv32_inst: entity neorv32.neorv32_top - generic map ( - -- General -- - CLOCK_FREQUENCY => CLOCK_FREQUENCY, -- clock frequency of clk_i in Hz - INT_BOOTLOADER_EN => false, -- boot configuration: true = boot explicit bootloader; false = boot from int/ext (I)MEM - HW_THREAD_ID => HW_THREAD_ID, -- hardware thread id (32-bit) - - -- On-Chip Debugger (OCD) -- - ON_CHIP_DEBUGGER_EN => false, -- implement on-chip debugger? - - -- RISC-V CPU Extensions -- - CPU_EXTENSION_RISCV_C => CPU_EXTENSION_RISCV_C, -- implement compressed extension? - CPU_EXTENSION_RISCV_E => CPU_EXTENSION_RISCV_E, -- implement embedded RF extension? - CPU_EXTENSION_RISCV_M => CPU_EXTENSION_RISCV_M, -- implement mul/div extension? - CPU_EXTENSION_RISCV_U => CPU_EXTENSION_RISCV_U, -- implement user mode extension? - CPU_EXTENSION_RISCV_Zfinx => CPU_EXTENSION_RISCV_Zfinx, -- implement 32-bit floating-point extension (using INT regs!) - CPU_EXTENSION_RISCV_Zicsr => CPU_EXTENSION_RISCV_Zicsr, -- implement CSR system? - CPU_EXTENSION_RISCV_Zicntr => true, -- implement base counters? - CPU_EXTENSION_RISCV_Zifencei => CPU_EXTENSION_RISCV_Zifencei, -- implement instruction stream sync.? - - -- Extension Options -- - FAST_MUL_EN => FAST_MUL_EN, -- use DSPs for M extension's multiplier - FAST_SHIFT_EN => FAST_SHIFT_EN, -- use barrel shifter for shift operations - - -- Physical Memory Protection (PMP) -- - PMP_NUM_REGIONS => PMP_NUM_REGIONS, -- number of regions (0..16) - PMP_MIN_GRANULARITY => PMP_MIN_GRANULARITY, -- minimal region granularity in bytes, has to be a power of 2, min 8 bytes - - -- Hardware Performance Monitors (HPM) -- - HPM_NUM_CNTS => HPM_NUM_CNTS, -- number of implemented HPM counters (0..29) - HPM_CNT_WIDTH => HPM_CNT_WIDTH, -- total size of HPM counters (1..64) - - -- Internal Instruction memory -- - MEM_INT_IMEM_EN => MEM_INT_IMEM_EN, -- implement processor-internal instruction memory - MEM_INT_IMEM_SIZE => MEM_INT_IMEM_SIZE, -- size of processor-internal instruction memory in bytes - - -- Internal Data memory -- - MEM_INT_DMEM_EN => MEM_INT_DMEM_EN, -- implement processor-internal data memory - MEM_INT_DMEM_SIZE => MEM_INT_DMEM_SIZE, -- size of processor-internal data memory in bytes - - -- Internal Cache memory -- - ICACHE_EN => ICACHE_EN, -- implement instruction cache - ICACHE_NUM_BLOCKS => ICACHE_NUM_BLOCKS, -- i-cache: number of blocks (min 1), has to be a power of 2 - ICACHE_BLOCK_SIZE => ICACHE_BLOCK_SIZE, -- i-cache: block size in bytes (min 4), has to be a power of 2 - ICACHE_ASSOCIATIVITY => ICACHE_ASSOCIATIVITY, -- i-cache: associativity / number of sets (1=direct_mapped), has to be a power of 2 - - -- External memory interface -- - MEM_EXT_EN => false, -- implement external memory bus interface? - MEM_EXT_TIMEOUT => 0, -- cycles after a pending bus access auto-terminates (0 = disabled) - - -- Processor peripherals -- - IO_GPIO_EN => IO_GPIO_EN, -- implement general purpose input/output port unit (GPIO)? - IO_MTIME_EN => IO_MTIME_EN, -- implement machine system timer (MTIME)? - IO_UART0_EN => IO_UART0_EN, -- implement primary universal asynchronous receiver/transmitter (UART0)? - IO_UART1_EN => false, -- implement secondary universal asynchronous receiver/transmitter (UART1)? - IO_SPI_EN => false, -- implement serial peripheral interface (SPI)? - IO_TWI_EN => false, -- implement two-wire interface (TWI)? - IO_PWM_NUM_CH => 0, -- number of PWM channels to implement (0..60); 0 = disabled - IO_WDT_EN => IO_WDT_EN, -- implement watch dog timer (WDT)? - IO_TRNG_EN => IO_TRNG_EN, -- implement true random number generator (TRNG)? - IO_CFS_EN => IO_CFS_EN, -- implement custom functions subsystem (CFS)? - IO_CFS_CONFIG => x"00000000", -- custom CFS configuration generic - IO_CFS_IN_SIZE => 32, -- size of CFS input conduit in bits - IO_CFS_OUT_SIZE => 32, -- size of CFS output conduit in bits - IO_NEOLED_EN => false -- implement NeoPixel-compatible smart LED interface (NEOLED)? - ) - port map ( - -- Global control -- - clk_i => clk_i, -- global clock, rising edge - rstn_i => rstn_i, -- global reset, low-active, async - - -- JTAG on-chip debugger interface (available if ON_CHIP_DEBUGGER_EN = true) -- - jtag_trst_i => '0', -- low-active TAP reset (optional) - jtag_tck_i => '0', -- serial clock - jtag_tdi_i => '0', -- serial data input - jtag_tdo_o => open, -- serial data output - jtag_tms_i => '0', -- mode select - - -- Wishbone bus interface (available if MEM_EXT_EN = true) -- - wb_tag_o => open, -- request tag - wb_adr_o => open, -- address - wb_dat_i => (others => '0'), -- read data - wb_dat_o => open, -- write data - wb_we_o => open, -- read/write - wb_sel_o => open, -- byte enable - wb_stb_o => open, -- strobe - wb_cyc_o => open, -- valid cycle - wb_ack_i => '0', -- transfer acknowledge - wb_err_i => '0', -- transfer error - - -- Advanced memory control signals (available if MEM_EXT_EN = true) -- - fence_o => open, -- indicates an executed FENCE operation - fencei_o => open, -- indicates an executed FENCEI operation - - -- GPIO (available if IO_GPIO_EN = true) -- - gpio_o => con_gpio_o, -- parallel output - gpio_i => (others => '0'), -- parallel input - - -- primary UART0 (available if IO_UART0_EN = true) -- - uart0_txd_o => uart_txd_o, -- UART0 send data - uart0_rxd_i => uart_rxd_i, -- UART0 receive data - uart0_rts_o => open, -- hw flow control: UART0.RX ready to receive ("RTR"), low-active, optional - uart0_cts_i => '0', -- hw flow control: UART0.TX allowed to transmit, low-active, optional - - -- secondary UART1 (available if IO_UART1_EN = true) -- - uart1_txd_o => open, -- UART1 send data - uart1_rxd_i => '0', -- UART1 receive data - uart1_rts_o => open, -- hw flow control: UART1.RX ready to receive ("RTR"), low-active, optional - uart1_cts_i => '0', -- hw flow control: UART1.TX allowed to transmit, low-active, optional - - -- SPI (available if IO_SPI_EN = true) -- - spi_sck_o => open, -- SPI serial clock - spi_sdo_o => open, -- controller data out, peripheral data in - spi_sdi_i => '0', -- controller data in, peripheral data out - spi_csn_o => open, -- SPI CS - - -- TWI (available if IO_TWI_EN = true) -- - twi_sda_io => open, -- twi serial data line - twi_scl_io => open, -- twi serial clock line - - -- PWM (available if IO_PWM_NUM_CH > 0) -- - pwm_o => open, -- pwm channels - - -- Custom Functions Subsystem IO -- - cfs_in_i => (others => '0'), -- custom CFS inputs conduit - cfs_out_o => open, -- custom CFS outputs conduit - - -- NeoPixel-compatible smart LED interface (available if IO_NEOLED_EN = true) -- - neoled_o => open, -- async serial data line - - -- System time -- - mtime_i => (others => '0'), -- current system time from ext. MTIME (if IO_MTIME_EN = false) - mtime_o => open, -- current system time from int. MTIME (if IO_MTIME_EN = true) - - -- Interrupts -- - mtime_irq_i => '0', -- machine timer interrupt, available if IO_MTIME_EN = false - msw_irq_i => '0', -- machine software interrupt - mext_irq_i => '0' -- machine external interrupt - ); - -end architecture;