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[rtl] SYSINFO: minor cleanups
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@stnolting
stnolting committed Oct 12, 2024
1 parent 9fa97c9 commit 5d8f144
Showing 1 changed file with 34 additions and 33 deletions.
67 changes: 34 additions & 33 deletions rtl/core/neorv32_sysinfo.vhd
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Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,7 @@ entity neorv32_sysinfo is
XIP_CACHE_EN : boolean; -- implement execute in place cache?
XIP_CACHE_NUM_BLOCKS : natural; -- number of blocks (min 1), has to be a power of 2
XIP_CACHE_BLOCK_SIZE : natural; -- block size in bytes (min 4), has to be a power of 2
ON_CHIP_DEBUGGER_EN : boolean; -- implement OCD?
OCD_EN : boolean; -- implement OCD?
OCD_AUTHENTICATION : boolean; -- implement OCD authenticator?
IO_GPIO_EN : boolean; -- implement general purpose IO port (GPIO)?
IO_MTIME_EN : boolean; -- implement machine system timer (MTIME)?
Expand Down Expand Up @@ -74,6 +74,7 @@ architecture neorv32_sysinfo_rtl of neorv32_sysinfo is
constant int_dmem_en_c : boolean := MEM_INT_DMEM_EN and boolean(MEM_INT_DMEM_SIZE > 0);
constant xcache_en_c : boolean := XBUS_EN and XBUS_CACHE_EN;
constant xip_cache_en_c : boolean := XIP_EN and XIP_CACHE_EN;
constant ocd_auth_en_c : boolean := OCD_EN and OCD_AUTHENTICATION;

-- system information memory --
type sysinfo_t is array (0 to 3) of std_ulogic_vector(31 downto 0);
Expand Down Expand Up @@ -106,38 +107,38 @@ begin
sysinfo(1)(31 downto 24) <= (others => '0'); -- reserved

-- SYSINFO(2): SoC Configuration --
sysinfo(2)(0) <= '1' when INT_BOOTLOADER_EN else '0'; -- processor-internal bootloader implemented?
sysinfo(2)(1) <= '1' when XBUS_EN else '0'; -- external bus interface implemented?
sysinfo(2)(2) <= '1' when int_imem_en_c else '0'; -- processor-internal instruction memory implemented?
sysinfo(2)(3) <= '1' when int_dmem_en_c else '0'; -- processor-internal data memory implemented?
sysinfo(2)(4) <= '1' when ON_CHIP_DEBUGGER_EN else '0'; -- on-chip debugger implemented?
sysinfo(2)(5) <= '1' when ICACHE_EN else '0'; -- processor-internal instruction cache implemented?
sysinfo(2)(6) <= '1' when DCACHE_EN else '0'; -- processor-internal data cache implemented?
sysinfo(2)(7) <= '1' when CLOCK_GATING_EN else '0'; -- enable clock gating when in sleep mode
sysinfo(2)(8) <= '1' when xcache_en_c else '0'; -- external bus interface cache implemented?
sysinfo(2)(9) <= '1' when XIP_EN else '0'; -- execute in-place module implemented?
sysinfo(2)(10) <= '1' when xip_cache_en_c else '0'; -- execute in-place cache implemented?
sysinfo(2)(11) <= '1' when OCD_AUTHENTICATION else '0'; -- on-chip debugger authentication implemented?
sysinfo(2)(12) <= '0'; -- reserved
sysinfo(2)(13) <= '0'; -- reserved
sysinfo(2)(14) <= '1' when IO_DMA_EN else '0'; -- direct memory access controller (DMA) implemented?
sysinfo(2)(15) <= '1' when IO_GPIO_EN else '0'; -- general purpose input/output port unit (GPIO) implemented?
sysinfo(2)(16) <= '1' when IO_MTIME_EN else '0'; -- machine system timer (MTIME) implemented?
sysinfo(2)(17) <= '1' when IO_UART0_EN else '0'; -- primary universal asynchronous receiver/transmitter (UART0) implemented?
sysinfo(2)(18) <= '1' when IO_SPI_EN else '0'; -- serial peripheral interface (SPI) implemented?
sysinfo(2)(19) <= '1' when IO_TWI_EN else '0'; -- two-wire interface (TWI) implemented?
sysinfo(2)(20) <= '1' when IO_PWM_EN else '0'; -- pulse-width modulation unit (PWM) implemented?
sysinfo(2)(21) <= '1' when IO_WDT_EN else '0'; -- watch dog timer (WDT) implemented?
sysinfo(2)(22) <= '1' when IO_CFS_EN else '0'; -- custom functions subsystem (CFS) implemented?
sysinfo(2)(23) <= '1' when IO_TRNG_EN else '0'; -- true random number generator (TRNG) implemented?
sysinfo(2)(24) <= '1' when IO_SDI_EN else '0'; -- serial data interface (SDI) implemented?
sysinfo(2)(25) <= '1' when IO_UART1_EN else '0'; -- secondary universal asynchronous receiver/transmitter (UART1) implemented?
sysinfo(2)(26) <= '1' when IO_NEOLED_EN else '0'; -- NeoPixel-compatible smart LED interface (NEOLED) implemented?
sysinfo(2)(27) <= '1' when IO_XIRQ_EN else '0'; -- external interrupt controller (XIRQ) implemented?
sysinfo(2)(28) <= '1' when IO_GPTMR_EN else '0'; -- general purpose timer (GPTMR) implemented?
sysinfo(2)(29) <= '1' when IO_SLINK_EN else '0'; -- stream link interface (SLINK) implemented?
sysinfo(2)(30) <= '1' when IO_ONEWIRE_EN else '0'; -- 1-wire interface (ONEWIRE) implemented?
sysinfo(2)(31) <= '1' when IO_CRC_EN else '0'; -- cyclic redundancy check unit (CRC) implemented?
sysinfo(2)(0) <= '1' when INT_BOOTLOADER_EN else '0'; -- processor-internal bootloader implemented?
sysinfo(2)(1) <= '1' when XBUS_EN else '0'; -- external bus interface implemented?
sysinfo(2)(2) <= '1' when int_imem_en_c else '0'; -- processor-internal instruction memory implemented?
sysinfo(2)(3) <= '1' when int_dmem_en_c else '0'; -- processor-internal data memory implemented?
sysinfo(2)(4) <= '1' when OCD_EN else '0'; -- on-chip debugger implemented?
sysinfo(2)(5) <= '1' when ICACHE_EN else '0'; -- processor-internal instruction cache implemented?
sysinfo(2)(6) <= '1' when DCACHE_EN else '0'; -- processor-internal data cache implemented?
sysinfo(2)(7) <= '1' when CLOCK_GATING_EN else '0'; -- enable clock gating when in sleep mode
sysinfo(2)(8) <= '1' when xcache_en_c else '0'; -- external bus interface cache implemented?
sysinfo(2)(9) <= '1' when XIP_EN else '0'; -- execute in-place module implemented?
sysinfo(2)(10) <= '1' when xip_cache_en_c else '0'; -- execute in-place cache implemented?
sysinfo(2)(11) <= '1' when ocd_auth_en_c else '0'; -- on-chip debugger authentication implemented?
sysinfo(2)(12) <= '0'; -- reserved
sysinfo(2)(13) <= '0'; -- reserved
sysinfo(2)(14) <= '1' when IO_DMA_EN else '0'; -- direct memory access controller (DMA) implemented?
sysinfo(2)(15) <= '1' when IO_GPIO_EN else '0'; -- general purpose input/output port unit (GPIO) implemented?
sysinfo(2)(16) <= '1' when IO_MTIME_EN else '0'; -- machine system timer (MTIME) implemented?
sysinfo(2)(17) <= '1' when IO_UART0_EN else '0'; -- primary universal asynchronous receiver/transmitter (UART0) implemented?
sysinfo(2)(18) <= '1' when IO_SPI_EN else '0'; -- serial peripheral interface (SPI) implemented?
sysinfo(2)(19) <= '1' when IO_TWI_EN else '0'; -- two-wire interface (TWI) implemented?
sysinfo(2)(20) <= '1' when IO_PWM_EN else '0'; -- pulse-width modulation unit (PWM) implemented?
sysinfo(2)(21) <= '1' when IO_WDT_EN else '0'; -- watch dog timer (WDT) implemented?
sysinfo(2)(22) <= '1' when IO_CFS_EN else '0'; -- custom functions subsystem (CFS) implemented?
sysinfo(2)(23) <= '1' when IO_TRNG_EN else '0'; -- true random number generator (TRNG) implemented?
sysinfo(2)(24) <= '1' when IO_SDI_EN else '0'; -- serial data interface (SDI) implemented?
sysinfo(2)(25) <= '1' when IO_UART1_EN else '0'; -- secondary universal asynchronous receiver/transmitter (UART1) implemented?
sysinfo(2)(26) <= '1' when IO_NEOLED_EN else '0'; -- NeoPixel-compatible smart LED interface (NEOLED) implemented?
sysinfo(2)(27) <= '1' when IO_XIRQ_EN else '0'; -- external interrupt controller (XIRQ) implemented?
sysinfo(2)(28) <= '1' when IO_GPTMR_EN else '0'; -- general purpose timer (GPTMR) implemented?
sysinfo(2)(29) <= '1' when IO_SLINK_EN else '0'; -- stream link interface (SLINK) implemented?
sysinfo(2)(30) <= '1' when IO_ONEWIRE_EN else '0'; -- 1-wire interface (ONEWIRE) implemented?
sysinfo(2)(31) <= '1' when IO_CRC_EN else '0'; -- cyclic redundancy check unit (CRC) implemented?

-- SYSINFO(3): Cache Configuration --
sysinfo(3)(3 downto 0) <= std_ulogic_vector(to_unsigned(index_size_f(ICACHE_BLOCK_SIZE), 4)) when ICACHE_EN else (others => '0'); -- i-cache: log2(block_size_in_bytes)
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