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-- #################################################################################################
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-- #################################################################################################
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-- # << NEORV32 - System/Processor Configuration Information Memory (SYSINFO) >> #
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-- # << NEORV32 - System/Processor Configuration Information Memory (SYSINFO) >> #
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-- # ********************************************************************************************* #
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-- # ********************************************************************************************* #
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-- # This unit provides information regarding the 'processor system' configuration - #
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-- # This unit provides information regarding the NEORV32 processor system configuration - #
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-- # mostly derived from the top's configuration generics. #
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-- # mostly derived from the top's configuration generics. #
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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) 2021, Stephan Nolting. All rights reserved. #
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-- # Copyright (c) 2021, Stephan Nolting. All rights reserved. #
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IO_SPI_EN : boolean := true; -- implement serial peripheral interface (SPI)?
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IO_SPI_EN : boolean := true; -- implement serial peripheral interface (SPI)?
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IO_TWI_EN : boolean := true; -- implement two-wire interface (TWI)?
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IO_TWI_EN : boolean := true; -- implement two-wire interface (TWI)?
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IO_PWM_EN : boolean := true; -- implement pulse-width modulation unit (PWM)?
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IO_PWM_EN : boolean := true; -- implement pulse-width modulation unit (PWM)?
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IO_WDT_EN : boolean := true; -- implement watch dog timer (WDT)?
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IO_WDT_EN : boolean := true; -- implement watch dog timer (WDT)?
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IO_TRNG_EN : boolean := true; -- implement true random number generator (TRNG)?
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IO_TRNG_EN : boolean := true; -- implement true random number generator (TRNG)?
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IO_CFU0_EN : boolean := true; -- implement custom functions unit 0 (CFU0)?
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IO_CFS_EN : boolean := true -- implement custom functions subsystem (CFS)?
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IO_CFU1_EN : boolean := true -- implement custom functions unit 1 (CFU1)?
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);
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);
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port (
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port (
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-- host access --
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-- host access --
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clk_i : in std_ulogic; -- global clock line
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clk_i : in std_ulogic; -- global clock line
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addr_i : in std_ulogic_vector(31 downto 0); -- address
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addr_i : in std_ulogic_vector(31 downto 0); -- address
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sysinfo_mem(2)(18) <= bool_to_ulogic_f(IO_UART_EN); -- universal asynchronous receiver/transmitter (UART) implemented?
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sysinfo_mem(2)(18) <= bool_to_ulogic_f(IO_UART_EN); -- universal asynchronous receiver/transmitter (UART) implemented?
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sysinfo_mem(2)(19) <= bool_to_ulogic_f(IO_SPI_EN); -- serial peripheral interface (SPI) implemented?
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sysinfo_mem(2)(19) <= bool_to_ulogic_f(IO_SPI_EN); -- serial peripheral interface (SPI) implemented?
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sysinfo_mem(2)(20) <= bool_to_ulogic_f(IO_TWI_EN); -- two-wire interface (TWI) implemented?
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sysinfo_mem(2)(20) <= bool_to_ulogic_f(IO_TWI_EN); -- two-wire interface (TWI) implemented?
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sysinfo_mem(2)(21) <= bool_to_ulogic_f(IO_PWM_EN); -- pulse-width modulation unit (PWM) implemented?
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sysinfo_mem(2)(21) <= bool_to_ulogic_f(IO_PWM_EN); -- pulse-width modulation unit (PWM) implemented?
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sysinfo_mem(2)(22) <= bool_to_ulogic_f(IO_WDT_EN); -- watch dog timer (WDT) implemented?
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sysinfo_mem(2)(22) <= bool_to_ulogic_f(IO_WDT_EN); -- watch dog timer (WDT) implemented?
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sysinfo_mem(2)(23) <= bool_to_ulogic_f(IO_CFU0_EN); -- custom functions unit 0 (CFU0) implemented?
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sysinfo_mem(2)(23) <= bool_to_ulogic_f(IO_CFS_EN); -- custom functions subsystem (CFS) implemented?
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sysinfo_mem(2)(24) <= bool_to_ulogic_f(IO_TRNG_EN); -- true random number generator (TRNG) implemented?
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sysinfo_mem(2)(24) <= bool_to_ulogic_f(IO_TRNG_EN); -- true random number generator (TRNG) implemented?
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sysinfo_mem(2)(25) <= bool_to_ulogic_f(IO_CFU1_EN); -- custom functions unit 1 (CFU1) implemented?
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--
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--
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sysinfo_mem(2)(31 downto 26) <= (others => '0'); -- reserved
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sysinfo_mem(2)(31 downto 25) <= (others => '0'); -- reserved
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-- SYSINFO(3): Cache configuration --
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-- SYSINFO(3): Cache configuration --
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sysinfo_mem(3)(03 downto 00) <= std_ulogic_vector(to_unsigned(index_size_f(ICACHE_BLOCK_SIZE), 4)) when (ICACHE_EN = true) else (others => '0'); -- i-cache: log2(block_size_in_bytes)
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sysinfo_mem(3)(03 downto 00) <= std_ulogic_vector(to_unsigned(index_size_f(ICACHE_BLOCK_SIZE), 4)) when (ICACHE_EN = true) else (others => '0'); -- i-cache: log2(block_size_in_bytes)
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sysinfo_mem(3)(07 downto 04) <= std_ulogic_vector(to_unsigned(index_size_f(ICACHE_NUM_BLOCKS), 4)) when (ICACHE_EN = true) else (others => '0'); -- i-cache: log2(number_of_block)
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sysinfo_mem(3)(07 downto 04) <= std_ulogic_vector(to_unsigned(index_size_f(ICACHE_NUM_BLOCKS), 4)) when (ICACHE_EN = true) else (others => '0'); -- i-cache: log2(number_of_block)
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sysinfo_mem(3)(11 downto 08) <= std_ulogic_vector(to_unsigned(index_size_f(ICACHE_ASSOCIATIVITY), 4)) when (ICACHE_EN = true) else (others => '0'); -- i-cache: log2(associativity)
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sysinfo_mem(3)(11 downto 08) <= std_ulogic_vector(to_unsigned(index_size_f(ICACHE_ASSOCIATIVITY), 4)) when (ICACHE_EN = true) else (others => '0'); -- i-cache: log2(associativity)
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