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use neorv32.neorv32_package.all;
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use neorv32.neorv32_package.all;
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entity neorv32_sysinfo is
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entity neorv32_sysinfo is
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generic (
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generic (
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-- General --
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-- General --
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CLOCK_FREQUENCY : natural := 0; -- clock frequency of clk_i in Hz
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CLOCK_FREQUENCY : natural; -- clock frequency of clk_i in Hz
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INT_BOOTLOADER_EN : boolean := true; -- boot configuration: true = boot explicit bootloader; false = boot from int/ext (I)MEM
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INT_BOOTLOADER_EN : boolean; -- boot configuration: true = boot explicit bootloader; false = boot from int/ext (I)MEM
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USER_CODE : std_ulogic_vector(31 downto 0) := x"00000000"; -- custom user code
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USER_CODE : std_ulogic_vector(31 downto 0) := x"00000000"; -- custom user code
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-- Internal Instruction memory --
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-- Internal Instruction memory --
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MEM_INT_IMEM_EN : boolean := true; -- implement processor-internal instruction memory
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MEM_INT_IMEM_EN : boolean; -- implement processor-internal instruction memory
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MEM_INT_IMEM_SIZE : natural := 8*1024; -- size of processor-internal instruction memory in bytes
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MEM_INT_IMEM_SIZE : natural; -- size of processor-internal instruction memory in bytes
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-- Internal Data memory --
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-- Internal Data memory --
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MEM_INT_DMEM_EN : boolean := true; -- implement processor-internal data memory
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MEM_INT_DMEM_EN : boolean; -- implement processor-internal data memory
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MEM_INT_DMEM_SIZE : natural := 4*1024; -- size of processor-internal data memory in bytes
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MEM_INT_DMEM_SIZE : natural; -- size of processor-internal data memory in bytes
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-- Internal Cache memory --
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-- Internal Cache memory --
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ICACHE_EN : boolean := true; -- implement instruction cache
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ICACHE_EN : boolean; -- implement instruction cache
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ICACHE_NUM_BLOCKS : natural := 4; -- i-cache: number of blocks (min 2), has to be a power of 2
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ICACHE_NUM_BLOCKS : natural; -- i-cache: number of blocks (min 2), has to be a power of 2
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ICACHE_BLOCK_SIZE : natural := 64; -- i-cache: block size in bytes (min 4), has to be a power of 2
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ICACHE_BLOCK_SIZE : natural; -- i-cache: block size in bytes (min 4), has to be a power of 2
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ICACHE_ASSOCIATIVITY : natural := 1; -- i-cache: associativity (min 1), has to be a power 2
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ICACHE_ASSOCIATIVITY : natural; -- i-cache: associativity (min 1), has to be a power 2
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-- External memory interface --
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-- External memory interface --
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MEM_EXT_EN : boolean := false; -- implement external memory bus interface?
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MEM_EXT_EN : boolean; -- implement external memory bus interface?
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MEM_EXT_BIG_ENDIAN : boolean; -- byte order: true=big-endian, false=little-endian
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-- On-Chip Debugger --
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-- On-Chip Debugger --
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ON_CHIP_DEBUGGER_EN : boolean := false; -- implement OCD?
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ON_CHIP_DEBUGGER_EN : boolean; -- implement OCD?
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-- Processor peripherals --
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-- Processor peripherals --
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IO_GPIO_EN : boolean := true; -- implement general purpose input/output port unit (GPIO)?
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IO_GPIO_EN : boolean; -- implement general purpose input/output port unit (GPIO)?
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IO_MTIME_EN : boolean := true; -- implement machine system timer (MTIME)?
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IO_MTIME_EN : boolean; -- implement machine system timer (MTIME)?
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IO_UART0_EN : boolean := true; -- implement primary universal asynchronous receiver/transmitter (UART0)?
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IO_UART0_EN : boolean; -- implement primary universal asynchronous receiver/transmitter (UART0)?
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IO_UART1_EN : boolean := true; -- implement secondary universal asynchronous receiver/transmitter (UART1)?
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IO_UART1_EN : boolean; -- implement secondary universal asynchronous receiver/transmitter (UART1)?
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IO_SPI_EN : boolean := true; -- implement serial peripheral interface (SPI)?
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IO_SPI_EN : boolean; -- 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; -- implement two-wire interface (TWI)?
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IO_PWM_NUM_CH : natural := 4; -- number of PWM channels to implement
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IO_PWM_NUM_CH : natural; -- number of PWM channels to implement
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IO_WDT_EN : boolean := true; -- implement watch dog timer (WDT)?
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IO_WDT_EN : boolean; -- 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; -- implement true random number generator (TRNG)?
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IO_CFS_EN : boolean := true; -- implement custom functions subsystem (CFS)?
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IO_CFS_EN : boolean; -- implement custom functions subsystem (CFS)?
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IO_SLINK_EN : boolean := true; -- implement stream link interface?
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IO_SLINK_EN : boolean; -- implement stream link interface?
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IO_NEOLED_EN : boolean := true; -- implement NeoPixel-compatible smart LED interface (NEOLED)?
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IO_NEOLED_EN : boolean; -- implement NeoPixel-compatible smart LED interface (NEOLED)?
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IO_XIRQ_NUM_CH : natural := 32 -- number of external interrupt (XIRQ) channels to implement
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IO_XIRQ_NUM_CH : natural -- number of external interrupt (XIRQ) channels to implement
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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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-- Memory --
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-- Memory --
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sysinfo_mem(2)(00) <= bool_to_ulogic_f(INT_BOOTLOADER_EN); -- processor-internal bootloader implemented?
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sysinfo_mem(2)(00) <= bool_to_ulogic_f(INT_BOOTLOADER_EN); -- processor-internal bootloader implemented?
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sysinfo_mem(2)(01) <= bool_to_ulogic_f(MEM_EXT_EN); -- external memory bus interface implemented?
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sysinfo_mem(2)(01) <= bool_to_ulogic_f(MEM_EXT_EN); -- external memory bus interface implemented?
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sysinfo_mem(2)(02) <= bool_to_ulogic_f(MEM_INT_IMEM_EN); -- processor-internal instruction memory implemented?
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sysinfo_mem(2)(02) <= bool_to_ulogic_f(MEM_INT_IMEM_EN); -- processor-internal instruction memory implemented?
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sysinfo_mem(2)(03) <= bool_to_ulogic_f(MEM_INT_DMEM_EN); -- processor-internal data memory implemented?
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sysinfo_mem(2)(03) <= bool_to_ulogic_f(MEM_INT_DMEM_EN); -- processor-internal data memory implemented?
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sysinfo_mem(2)(04) <= bool_to_ulogic_f(wb_big_endian_c); -- is external memory bus interface using BIG-endian byte-order?
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sysinfo_mem(2)(04) <= bool_to_ulogic_f(MEM_EXT_BIG_ENDIAN); -- is external memory bus interface using BIG-endian byte-order?
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sysinfo_mem(2)(05) <= bool_to_ulogic_f(ICACHE_EN); -- processor-internal instruction cache implemented?
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sysinfo_mem(2)(05) <= bool_to_ulogic_f(ICACHE_EN); -- processor-internal instruction cache implemented?
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--
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--
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sysinfo_mem(2)(13 downto 06) <= (others => '0'); -- reserved
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sysinfo_mem(2)(13 downto 06) <= (others => '0'); -- reserved
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-- Misc --
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-- Misc --
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sysinfo_mem(2)(14) <= bool_to_ulogic_f(ON_CHIP_DEBUGGER_EN); -- on-chip debugger implemented?
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sysinfo_mem(2)(14) <= bool_to_ulogic_f(ON_CHIP_DEBUGGER_EN); -- on-chip debugger implemented?
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