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// ################################################################################################# // # << NEORV32: neorv32.h - Main Core Library File >> # // # ********************************************************************************************* # // # BSD 3-Clause License # // # # // # Copyright (c) 2020, Stephan Nolting. 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 # // ################################################################################################# /**********************************************************************//** * @file neorv32.h * @author Stephan Nolting * * @brief Main NEORV32 core library include file. **************************************************************************/ #ifndef neorv32_h #define neorv32_h // Standard libraries #include <stdint.h> #include <inttypes.h> #include <limits.h> /**********************************************************************//** * Available CPU Control and Status Registers (CSRs) **************************************************************************/ enum NEORV32_CPU_CSRS_enum { CSR_MSTATUS = 0x300, /**< 0x300 - mstatus (r/w): Machine status register */ CSR_MISA = 0x301, /**< 0x301 - misa (r/-): CPU ISA and extensions (read-only in NEORV32) */ CSR_MIE = 0x304, /**< 0x304 - mie (r/w): Machine interrupt-enable register */ CSR_MTVEC = 0x305, /**< 0x305 - mtvec (r/w): Machine trap-handler base address (for ALL traps) */ CSR_MCOUNTEREN = 0x306, /**< 0x305 - mcounteren (r/w): Machine counter enable register (controls access rights from U-mode) */ CSR_MSTATUSH = 0x310, /**< 0x310 - mstatush (r/-): Machine status register - high word */ CSR_MCOUNTINHIBIT = 0x320, /**< 0x320 - mcountinhibit (r/w): Machine counter-inhibit register */ CSR_MSCRATCH = 0x340, /**< 0x340 - mscratch (r/w): Machine scratch register */ CSR_MEPC = 0x341, /**< 0x341 - mepc (r/w): Machine exception program counter */ CSR_MCAUSE = 0x342, /**< 0x342 - mcause (r/w): Machine trap cause */ CSR_MTVAL = 0x343, /**< 0x343 - mtval (r/w): Machine bad address or instruction */ CSR_MIP = 0x344, /**< 0x344 - mip (r/w): Machine interrupt pending register */ CSR_PMPCFG0 = 0x3a0, /**< 0x3a0 - pmpcfg0 (r/w): Physical memory protection configuration register 0 */ CSR_PMPCFG1 = 0x3a1, /**< 0x3a1 - pmpcfg1 (r/w): Physical memory protection configuration register 1 */ CSR_PMPADDR0 = 0x3b0, /**< 0x3b0 - pmpaddr0 (r/w): Physical memory protection address register 0 */ CSR_PMPADDR1 = 0x3b1, /**< 0x3b1 - pmpaddr1 (r/w): Physical memory protection address register 1 */ CSR_PMPADDR2 = 0x3b2, /**< 0x3b2 - pmpaddr2 (r/w): Physical memory protection address register 2 */ CSR_PMPADDR3 = 0x3b3, /**< 0x3b3 - pmpaddr3 (r/w): Physical memory protection address register 3 */ CSR_PMPADDR4 = 0x3b4, /**< 0x3b4 - pmpaddr4 (r/w): Physical memory protection address register 4 */ CSR_PMPADDR5 = 0x3b5, /**< 0x3b5 - pmpaddr5 (r/w): Physical memory protection address register 5 */ CSR_PMPADDR6 = 0x3b6, /**< 0x3b6 - pmpaddr6 (r/w): Physical memory protection address register 6 */ CSR_PMPADDR7 = 0x3b7, /**< 0x3b7 - pmpaddr7 (r/w): Physical memory protection address register 7 */ CSR_MCYCLE = 0xb00, /**< 0xb00 - mcycle (r/w): Machine cycle counter low word */ CSR_MINSTRET = 0xb02, /**< 0xb02 - minstret (r/w): Machine instructions-retired counter low word */ CSR_MCYCLEH = 0xb80, /**< 0xb80 - mcycleh (r/w): Machine cycle counter high word */ CSR_MINSTRETH = 0xb82, /**< 0xb82 - minstreth (r/w): Machine instructions-retired counter high word */ CSR_CYCLE = 0xc00, /**< 0xc00 - cycle (r/-): Cycle counter low word (from MCYCLE) */ CSR_TIME = 0xc01, /**< 0xc01 - time (r/-): Timer low word (from MTIME.TIME_LO) */ CSR_INSTRET = 0xc02, /**< 0xc02 - instret (r/-): Instructions-retired counter low word (from MINSTRET) */ CSR_CYCLEH = 0xc80, /**< 0xc80 - cycleh (r/-): Cycle counter high word (from MCYCLEH) */ CSR_TIMEH = 0xc81, /**< 0xc81 - timeh (r/-): Timer high word (from MTIME.TIME_HI) */ CSR_INSTRETH = 0xc82, /**< 0xc82 - instreth (r/-): Instructions-retired counter high word (from MINSTRETH) */ CSR_MVENDORID = 0xf11, /**< 0xf11 - mvendorid (r/-): Vendor ID */ CSR_MARCHID = 0xf12, /**< 0xf12 - marchid (r/-): Architecture ID */ CSR_MIMPID = 0xf13, /**< 0xf13 - mimpid (r/-): Implementation ID/version */ CSR_MHARTID = 0xf14, /**< 0xf14 - mhartid (r/-): Hardware thread ID (always 0) */ CSR_MZEXT = 0xfc0 /**< 0xfc0 - mzext (custom CSR) (r/-): Available Z* CPU extensions */ }; /**********************************************************************//** * CPU <b>mstatus</b> CSR (r/w): Machine status (RISC-V spec.) **************************************************************************/ enum NEORV32_CPU_MSTATUS_enum { CPU_MSTATUS_MIE = 3, /**< CPU mstatus CSR (3): MIE - Machine interrupt enable bit (r/w) */ CPU_MSTATUS_UBE = 6, /**< CPU mstatus CSR (6): UBE - User-mode endianness (little-endian=0, big-endian=1) (r/-) */ CPU_MSTATUS_MPIE = 7, /**< CPU mstatus CSR (7): MPIE - Machine previous interrupt enable bit (r/w) */ CPU_MSTATUS_MPP_L = 11, /**< CPU mstatus CSR (11): MPP_L - Machine previous privilege mode bit low (r/w) */ CPU_MSTATUS_MPP_H = 12 /**< CPU mstatus CSR (12): MPP_H - Machine previous privilege mode bit high (r/w) */ }; /**********************************************************************//** * CPU <b>mstatush</b> CSR (r/-): Machine status - high word (RISC-V spec.) **************************************************************************/ enum NEORV32_CPU_MSTATUSH_enum { CPU_MSTATUSH_MBE = 5 /**< CPU mstatush CSR (5): MBE - Machine-mode endianness (little-endian=0, big-endian=1) (r/-) */ }; /**********************************************************************//** * CPU <b>mcounteren</b> CSR (r/w): Machine counter enable (RISC-V spec.) **************************************************************************/ enum NEORV32_CPU_MCOUNTEREN_enum { CPU_MCOUNTEREN_CY = 0, /**< CPU mcounteren CSR (0): CY - Allow access to cycle[h] CSRs from U-mode when set (r/w) */ CPU_MCOUNTEREN_TM = 1, /**< CPU mcounteren CSR (1): TM - Allow access to time[h] CSRs from U-mode when set (r/w) */ CPU_MCOUNTEREN_IR = 2 /**< CPU mcounteren CSR (2): IR - Allow access to instret[h] CSRs from U-mode when set (r/w) */ }; /**********************************************************************//** * CPU <b>mcountinhibit</b> CSR (r/w): Machine counter-inhibit (RISC-V spec.) **************************************************************************/ enum NEORV32_CPU_MCOUNTINHIBIT_enum { CPU_MCOUNTINHIBIT_CY = 0, /**< CPU mcountinhibit CSR (0): CY - Enable auto-increment of [m]cycle[h] CSR when set (r/w) */ CPU_MCOUNTINHIBIT_IR = 2 /**< CPU mcountinhibit CSR (2): IR - Enable auto-increment of [m]instret[h] CSR when set (r/w) */ }; /**********************************************************************//** * CPU <b>mie</b> CSR (r/w): Machine interrupt enable (RISC-V spec.) **************************************************************************/ enum NEORV32_CPU_MIE_enum { CPU_MIE_MSIE = 3, /**< CPU mie CSR (3): MSIE - Machine software interrupt enable (r/w) */ CPU_MIE_MTIE = 7, /**< CPU mie CSR (7): MTIE - Machine timer interrupt enable bit (r/w) */ CPU_MIE_MEIE = 11, /**< CPU mie CSR (11): MEIE - Machine external interrupt enable bit (r/w) */ CPU_MIE_FIRQ0E = 16, /**< CPU mie CSR (16): FIRQ0E - Fast interrupt channel 0 enable bit (r/w) */ CPU_MIE_FIRQ1E = 17, /**< CPU mie CSR (17): FIRQ1E - Fast interrupt channel 1 enable bit (r/w) */ CPU_MIE_FIRQ2E = 18, /**< CPU mie CSR (18): FIRQ2E - Fast interrupt channel 2 enable bit (r/w) */ CPU_MIE_FIRQ3E = 19 /**< CPU mie CSR (19): FIRQ3E - Fast interrupt channel 3 enable bit (r/w) */ }; /**********************************************************************//** * CPU <b>mip</b> CSR (r/-): Machine interrupt pending (RISC-V spec.) **************************************************************************/ enum NEORV32_CPU_MIP_enum { CPU_MIP_MSIP = 3, /**< CPU mip CSR (3): MSIP - Machine software interrupt pending (r/-) */ CPU_MIP_MTIP = 7, /**< CPU mip CSR (7): MTIP - Machine timer interrupt pending (r/-) */ CPU_MIP_MEIP = 11, /**< CPU mip CSR (11): MEIP - Machine external interrupt pending (r/-) */ CPU_MIP_FIRQ0P = 16, /**< CPU mip CSR (16): FIRQ0P - Fast interrupt channel 0 pending (r/-) */ CPU_MIP_FIRQ1P = 17, /**< CPU mip CSR (17): FIRQ1P - Fast interrupt channel 1 pending (r/-) */ CPU_MIP_FIRQ2P = 18, /**< CPU mip CSR (18): FIRQ2P - Fast interrupt channel 2 pending (r/-) */ CPU_MIP_FIRQ3P = 19 /**< CPU mip CSR (19): FIRQ3P - Fast interrupt channel 3 pending (r/-) */ }; /**********************************************************************//** * CPU <b>misa</b> CSR (r/-): Machine instruction set extensions (RISC-V spec.) **************************************************************************/ enum NEORV32_CPU_MISA_enum { CPU_MISA_A_EXT = 0, /**< CPU misa CSR (0): A: Atomic instructions CPU extension available (r/-)*/ CPU_MISA_B_EXT = 1, /**< CPU misa CSR (1): B: Bit manipulation CPU extension available (r/-)*/ CPU_MISA_C_EXT = 2, /**< CPU misa CSR (2): C: Compressed instructions CPU extension available (r/-)*/ CPU_MISA_E_EXT = 4, /**< CPU misa CSR (4): E: Embedded CPU extension available (r/-) */ CPU_MISA_F_EXT = 4, /**< CPU misa CSR (5): F: Floating point (single-precision) extension available (r/-) */ CPU_MISA_I_EXT = 8, /**< CPU misa CSR (8): I: Base integer ISA CPU extension available (r/-) */ CPU_MISA_M_EXT = 12, /**< CPU misa CSR (12): M: Multiplier/divider CPU extension available (r/-)*/ CPU_MISA_U_EXT = 20, /**< CPU misa CSR (20): U: User mode CPU extension available (r/-)*/ CPU_MISA_X_EXT = 23, /**< CPU misa CSR (23): X: Non-standard CPU extension available (r/-) */ CPU_MISA_MXL_LO_EXT = 30, /**< CPU misa CSR (30): MXL.lo: CPU data width (r/-) */ CPU_MISA_MXL_HI_EXT = 31 /**< CPU misa CSR (31): MXL.Hi: CPU data width (r/-) */ }; /**********************************************************************//** * CPU <b>mzext</b> custom CSR (r/-): Implemented Z* CPU extensions **************************************************************************/ enum NEORV32_CPU_MZEXT_enum { CPU_MZEXT_ZICSR = 0, /**< CPU mzext CSR (0): Zicsr extension available when set (r/-) */ CPU_MZEXT_ZIFENCEI = 1, /**< CPU mzext CSR (1): Zifencei extension available when set (r/-) */ CPU_MZEXT_PMP = 2 /**< CPU mzext CSR (2): PMP extension available when set (r/-) */ }; /**********************************************************************//** * Trap codes from mcause CSR. **************************************************************************/ enum NEORV32_EXCEPTION_CODES_enum { TRAP_CODE_I_MISALIGNED = 0x00000000, /**< 0.0: Instruction address misaligned */ TRAP_CODE_I_ACCESS = 0x00000001, /**< 0.1: Instruction (bus) access fault */ TRAP_CODE_I_ILLEGAL = 0x00000002, /**< 0.2: Illegal instruction */ TRAP_CODE_BREAKPOINT = 0x00000003, /**< 0.3: Breakpoint (EBREAK instruction) */ TRAP_CODE_L_MISALIGNED = 0x00000004, /**< 0.4: Load address misaligned */ TRAP_CODE_L_ACCESS = 0x00000005, /**< 0.5: Load (bus) access fault */ TRAP_CODE_S_MISALIGNED = 0x00000006, /**< 0.6: Store address misaligned */ TRAP_CODE_S_ACCESS = 0x00000007, /**< 0.7: Store (bus) access fault */ TRAP_CODE_UENV_CALL = 0x00000008, /**< 0.8: Environment call from user mode (ECALL instruction) */ TRAP_CODE_MENV_CALL = 0x0000000b, /**< 0.11: Environment call from machine mode (ECALL instruction) */ TRAP_CODE_RESET = 0x80000000, /**< 1.0: Hardware reset */ TRAP_CODE_MSI = 0x80000003, /**< 1.3: Machine software interrupt */ TRAP_CODE_MTI = 0x80000007, /**< 1.7: Machine timer interrupt */ TRAP_CODE_MEI = 0x8000000b, /**< 1.11: Machine external interrupt */ TRAP_CODE_FIRQ_0 = 0x80000010, /**< 1.16: Fast interrupt channel 0 */ TRAP_CODE_FIRQ_1 = 0x80000011, /**< 1.17: Fast interrupt channel 1 */ TRAP_CODE_FIRQ_2 = 0x80000012, /**< 1.18: Fast interrupt channel 2 */ TRAP_CODE_FIRQ_3 = 0x80000013 /**< 1.19: Fast interrupt channel 3 */ }; /**********************************************************************//** * Processor clock prescalers **************************************************************************/ enum NEORV32_CLOCK_PRSC_enum { CLK_PRSC_2 = 0, /**< CPU_CLK / 2 */ CLK_PRSC_4 = 1, /**< CPU_CLK / 4 */ CLK_PRSC_8 = 2, /**< CPU_CLK / 8 */ CLK_PRSC_64 = 3, /**< CPU_CLK / 64 */ CLK_PRSC_128 = 4, /**< CPU_CLK / 128 */ CLK_PRSC_1024 = 5, /**< CPU_CLK / 1024 */ CLK_PRSC_2048 = 6, /**< CPU_CLK / 2048 */ CLK_PRSC_4096 = 7 /**< CPU_CLK / 4096 */ }; /**********************************************************************//** * Official NEORV32 >RISC-V open-source architecture ID< * https://github.com/riscv/riscv-isa-manual/blob/master/marchid.md **************************************************************************/ #define NEORV32_ARCHID 19 /**********************************************************************//** * @name Helper macros for easy memory-mapped register access **************************************************************************/ /**@{*/ /** memory-mapped byte (8-bit) read/write register */ #define IO_REG8 (volatile uint8_t*) /** memory-mapped half-word (16-bit) read/write register */ #define IO_REG16 (volatile uint16_t*) /** memory-mapped word (32-bit) read/write register */ #define IO_REG32 (volatile uint32_t*) /** memory-mapped double-word (64-bit) read/write register */ #define IO_REG64 (volatile uint64_t*) /** memory-mapped byte (8-bit) read-only register */ #define IO_ROM8 (const volatile uint8_t*) /** memory-mapped half-word (16-bit) read-only register */ #define IO_ROM16 (const volatile uint16_t*) /** memory-mapped word (32-bit) read-only register */ #define IO_ROM32 (const volatile uint32_t*) /** memory-mapped double-word (64-bit) read-only register */ #define IO_ROM64 (const volatile uint64_t*) /**@}*/ /**********************************************************************//** * @name Address space sections **************************************************************************/ /**@{*/ /** instruction memory base address (r/w/x) */ // -> configured via ispace_base_c constant in neorv32_package.vhd and available to SW via SYSCONFIG entry /** data memory base address (r/w/x) */ // -> configured via dspace_base_c constant in neorv32_package.vhd and available to SW via SYSCONFIG entry /** bootloader memory base address (r/-/x) */ #define BOOTLOADER_BASE_ADDRESS (0xFFFF0000UL) /** peripheral/IO devices memory base address (r/w/x) */ #define IO_BASE_ADDRESS (0xFFFFFF80UL) /**@}*/ /**********************************************************************//** * @name IO Device: General Purpose Input/Output Port Unit (GPIO) **************************************************************************/ /**@{*/ /** read access: GPIO parallel input port 32-bit (r/-), write_access: pin-change IRQ for each input pin (-/w) */ #define GPIO_INPUT (*(IO_REG32 0xFFFFFF80UL)) /** GPIO parallel output port 32-bit (r/w) */ #define GPIO_OUTPUT (*(IO_REG32 0xFFFFFF84UL)) /**@}*/ /**********************************************************************//** * @name IO Device: True Random Number Generator (TRNG) **************************************************************************/ /**@{*/ /** TRNG control/data register (r/w) */ #define TRNG_CT (*(IO_REG32 0xFFFFFF88UL)) /** TRNG control/data register bits */ enum NEORV32_TRNG_CT_enum { TRNG_CT_DATA_LSB = 0, /**< TRNG data/control register(0) (r/-): Random data (8-bit) LSB */ TRNG_CT_DATA_MSB = 7, /**< TRNG data/control register(7) (r/-): Random data (8-bit) MSB */ TRNG_CT_VALID = 15, /**< TRNG data/control register(15) (r/-): Random data output valid */ TRNG_CT_ERROR_0 = 16, /**< TRNG data/control register(16) (r/-): Stuck-at-zero error */ TRNG_CT_ERROR_1 = 17, /**< TRNG data/control register(17) (r/-): Stuck-at-one error */ TRNG_CT_EN = 31 /**< TRNG data/control register(31) (r/w): TRNG enable */ }; /**@}*/ /**********************************************************************//** * @name IO Device: Watchdog Timer (WDT) **************************************************************************/ /**@{*/ /** Watchdog control register (r/w) */ #define WDT_CT (*(IO_REG32 0xFFFFFF8CUL)) /** WTD control register bits */ enum NEORV32_WDT_CT_enum { WDT_CT_CLK_SEL0 = 0, /**< WDT control register(0) (r/w): Clock prescaler select bit 0 */ WDT_CT_CLK_SEL1 = 1, /**< WDT control register(1) (r/w): Clock prescaler select bit 1 */ WDT_CT_CLK_SEL2 = 2, /**< WDT control register(2) (r/w): Clock prescaler select bit 2 */ WDT_CT_EN = 3, /**< WDT control register(3) (r/w): Watchdog enable */ WDT_CT_MODE = 4, /**< WDT control register(4) (r/w): Watchdog mode; when 0: timeout causes interrupt; when 1: timeout causes processor reset */ WDT_CT_CAUSE = 5, /**< WDT control register(5) (r/-): Last action (reset/IRQ) cause (0: external reset, 1: watchdog timeout) */ WDT_CT_PWFAIL = 6, /**< WDT control register(6) (r/-): Last Watchdog action (reset/IRQ) caused by wrong password when 1 */ WDT_CT_PASSWORD_LSB = 8, /**< WDT control register(8) (-/w): First bit / position begin for watchdog access password */ WDT_CT_PASSWORD_MSB = 15 /**< WDT control register(15) (-/w): Last bit / position end for watchdog access password */ }; /** Watchdog access passwort, must be set in WDT_CT bits 15:8 for every control register access */ #define WDT_PASSWORD 0x47 /**@}*/ /**********************************************************************//** * @name IO Device: Machine System Timer (MTIME) **************************************************************************/ /**@{*/ /** MTIME (time register) low word (r/w) */ #define MTIME_LO (*(IO_REG32 0xFFFFFF90UL)) /** MTIME (time register) high word (r/w) */ #define MTIME_HI (*(IO_REG32 0xFFFFFF94UL)) /** MTIMECMP (time compare register) low word (r/w) */ #define MTIMECMP_LO (*(IO_REG32 0xFFFFFF98UL)) /** MTIMECMP (time register) high word (r/w) */ #define MTIMECMP_HI (*(IO_REG32 0xFFFFFF9CUL)) /** MTIME (time register) 64-bit access (r/w) */ #define MTIME (*(IO_REG64 (&MTIME_LO))) /** MTIMECMP (time compare register) low word (r/w) */ #define MTIMECMP (*(IO_REG64 (&MTIMECMP_LO))) /**@}*/ /**********************************************************************//** * @name IO Device: Universal Asynchronous Receiver and Transmitter (UART) **************************************************************************/ /**@{*/ /** UART control register (r/w) */ #define UART_CT (*(IO_REG32 0xFFFFFFA0UL)) /** UART receive/transmit data register (r/w) */ #define UART_DATA (*(IO_REG32 0xFFFFFFA4UL)) /** UART control register bits */ enum NEORV32_UART_CT_enum { UART_CT_BAUD00 = 0, /**< UART control register(0) (r/w): BAUD rate config value lsb (12-bi, bit 0) */ UART_CT_BAUD01 = 1, /**< UART control register(1) (r/w): BAUD rate config value (12-bi, bit 1) */ UART_CT_BAUD02 = 2, /**< UART control register(2) (r/w): BAUD rate config value (12-bi, bit 2) */ UART_CT_BAUD03 = 3, /**< UART control register(3) (r/w): BAUD rate config value (12-bi, bit 3) */ UART_CT_BAUD04 = 4, /**< UART control register(4) (r/w): BAUD rate config value (12-bi, bit 4) */ UART_CT_BAUD05 = 5, /**< UART control register(5) (r/w): BAUD rate config value (12-bi, bit 4) */ UART_CT_BAUD06 = 6, /**< UART control register(6) (r/w): BAUD rate config value (12-bi, bit 5) */ UART_CT_BAUD07 = 7, /**< UART control register(7) (r/w): BAUD rate config value (12-bi, bit 6) */ UART_CT_BAUD08 = 8, /**< UART control register(8) (r/w): BAUD rate config value (12-bi, bit 7) */ UART_CT_BAUD09 = 9, /**< UART control register(9) (r/w): BAUD rate config value (12-bi, bit 8) */ UART_CT_BAUD10 = 10, /**< UART control register(10) (r/w): BAUD rate config value (12-bi, bit 9) */ UART_CT_BAUD11 = 11, /**< UART control register(11) (r/w): BAUD rate config value msb (12-bi, bit 0) */ UART_CT_SIM_MODE = 12, /**< UART control register(12) (r/w): Simulation output override enable, for use in simulation only */ UART_CT_PRSC0 = 24, /**< UART control register(24) (r/w): BAUD rate clock prescaler select bit 0 */ UART_CT_PRSC1 = 25, /**< UART control register(25) (r/w): BAUD rate clock prescaler select bit 1 */ UART_CT_PRSC2 = 26, /**< UART control register(26) (r/w): BAUD rate clock prescaler select bit 2 */ UART_CT_RXOR = 27, /**< UART control register(27) (r/-): RX data overrun when set */ UART_CT_EN = 28, /**< UART control register(28) (r/w): UART global enable */ UART_CT_RX_IRQ = 29, /**< UART control register(29) (r/w): Activate interrupt on RX done */ UART_CT_TX_IRQ = 30, /**< UART control register(30) (r/w): Activate interrupt on TX done */ UART_CT_TX_BUSY = 31 /**< UART control register(31) (r/-): Transmitter is busy when set */ }; /** UART receive/transmit data register bits */ enum NEORV32_UART_DATA_enum { UART_DATA_LSB = 0, /**< UART receive/transmit data register(0) (r/w): Receive/transmit data LSB (bit 0) */ UART_DATA_MSB = 7, /**< UART receive/transmit data register(7) (r/w): Receive/transmit data MSB (bit 7) */ UART_DATA_AVAIL = 31 /**< UART receive/transmit data register(31) (r/-): RX data available when set */ }; /**@}*/ /**********************************************************************//** * @name IO Device: Serial Peripheral Interface Controller (SPI) **************************************************************************/ /**@{*/ /** SPI control register (r/w) */ #define SPI_CT (*(IO_REG32 0xFFFFFFA8UL)) /** SPI receive/transmit data register (r/w) */ #define SPI_DATA (*(IO_REG32 0xFFFFFFACUL)) /** SPI control register bits */ enum NEORV32_SPI_CT_enum { SPI_CT_CS0 = 0, /**< UART control register(0) (r/w): Direct chip select line 0 (output is low when set) */ SPI_CT_CS1 = 1, /**< UART control register(1) (r/w): Direct chip select line 1 (output is low when set) */ SPI_CT_CS2 = 2, /**< UART control register(2) (r/w): Direct chip select line 2 (output is low when set) */ SPI_CT_CS3 = 3, /**< UART control register(3) (r/w): Direct chip select line 3 (output is low when set) */ SPI_CT_CS4 = 4, /**< UART control register(4) (r/w): Direct chip select line 4 (output is low when set) */ SPI_CT_CS5 = 5, /**< UART control register(5) (r/w): Direct chip select line 5 (output is low when set) */ SPI_CT_CS6 = 6, /**< UART control register(6) (r/w): Direct chip select line 6 (output is low when set) */ SPI_CT_CS7 = 7, /**< UART control register(7) (r/w): Direct chip select line 7 (output is low when set) */ SPI_CT_EN = 8, /**< UART control register(8) (r/w): SPI unit enable */ SPI_CT_CPHA = 9, /**< UART control register(9) (r/w): Clock polarity (idle polarity) */ SPI_CT_PRSC0 = 10, /**< UART control register(10) (r/w): Clock prescaler select bit 0 */ SPI_CT_PRSC1 = 11, /**< UART control register(11) (r/w): Clock prescaler select bit 1 */ SPI_CT_PRSC2 = 12, /**< UART control register(12) (r/w): Clock prescaler select bit 2 */ SPI_CT_SIZE0 = 13, /**< UART control register(13) (r/w): Transfer data size lsb (00: 8-bit, 01: 16-bit, 10: 24-bit, 11: 32-bit) */ SPI_CT_SIZE1 = 14, /**< UART control register(14) (r/w): Transfer data size msb (00: 8-bit, 01: 16-bit, 10: 24-bit, 11: 32-bit) */ SPI_CT_IRQ_EN = 15, /**< UART control register(15) (r/w): Transfer done interrupt enable */ SPI_CT_BUSY = 31 /**< UART control register(31) (r/-): SPI busy flag */ }; /**@}*/ /**********************************************************************//** * @name IO Device: Two-Wire Interface Controller (TWI) **************************************************************************/ /**@{*/ /** TWI control register (r/w) */ #define TWI_CT (*(IO_REG32 0xFFFFFFB0UL)) /** TWI receive/transmit data register (r/w) */ #define TWI_DATA (*(IO_REG32 0xFFFFFFB4UL)) /** TWI control register bits */ enum NEORV32_TWI_CT_enum { TWI_CT_EN = 0, /**< TWI control register(0) (r/w): TWI enable */ TWI_CT_START = 1, /**< TWI control register(1) (-/w): Generate START condition, auto-clears */ TWI_CT_STOP = 2, /**< TWI control register(2) (-/w): Generate STOP condition, auto-clears */ TWI_CT_IRQ_EN = 3, /**< TWI control register(3) (r/w): Enable transmission done interrupt */ TWI_CT_PRSC0 = 4, /**< TWI control register(4) (r/w): Clock prescaler select bit 0 */ TWI_CT_PRSC1 = 5, /**< TWI control register(5) (r/w): Clock prescaler select bit 1 */ TWI_CT_PRSC2 = 6, /**< TWI control register(6) (r/w): Clock prescaler select bit 2 */ TWI_CT_MACK = 7, /**< TWI control register(7) (r/w): Generate controller ACK for each transmission */ TWI_CT_CKSTEN = 8, /**< TWI control register(8) (r/w): Enable clock stretching (by peripheral) */ TWI_CT_ACK = 30, /**< TWI control register(30) (r/-): ACK received when set */ TWI_CT_BUSY = 31 /**< TWI control register(31) (r/-): Transfer in progress, busy flag */ }; /** WTD receive/transmit data register bits */ enum NEORV32_TWI_DATA_enum { TWI_DATA_LSB = 0, /**< TWI data register(0) (r/w): Receive/transmit data (8-bit) LSB */ TWI_DATA_MSB = 7 /**< TWI data register(7) (r/w): Receive/transmit data (8-bit) MSB */ }; /**@}*/ /**********************************************************************//** * @name IO Device: Pulse Width Modulation Controller (PWM) **************************************************************************/ /**@{*/ /** PWM control register (r/w) */ #define PWM_CT (*(IO_REG32 0xFFFFFFB8UL)) // r/w: control register /** PWM duty cycle register (4-channels) (r/w) */ #define PWM_DUTY (*(IO_REG32 0xFFFFFFBCUL)) // r/w: duty cycle channel 1 and 0 /** PWM control register bits */ enum NEORV32_PWM_CT_enum { PWM_CT_EN = 0, /**< PWM control register(0) (r/w): PWM controller enable */ PWM_CT_PRSC0 = 1, /**< PWM control register(1) (r/w): Clock prescaler select bit 0 */ PWM_CT_PRSC1 = 2, /**< PWM control register(2) (r/w): Clock prescaler select bit 1 */ PWM_CT_PRSC2 = 3 /**< PWM control register(3) (r/w): Clock prescaler select bit 2 */ }; /**PWM duty cycle register bits */ enum NEORV32_PWM_DUTY_enum { PWM_DUTY_CH0_LSB = 0, /**< PWM duty cycle register(0) (r/w): Channel 0 duty cycle (8-bit) LSB */ PWM_DUTY_CH0_MSB = 7, /**< PWM duty cycle register(7) (r/w): Channel 0 duty cycle (8-bit) MSB */ PWM_DUTY_CH1_LSB = 8, /**< PWM duty cycle register(8) (r/w): Channel 1 duty cycle (8-bit) LSB */ PWM_DUTY_CH1_MSB = 15, /**< PWM duty cycle register(15) (r/w): Channel 1 duty cycle (8-bit) MSB */ PWM_DUTY_CH2_LSB = 16, /**< PWM duty cycle register(16) (r/w): Channel 2 duty cycle (8-bit) LSB */ PWM_DUTY_CH2_MSB = 23, /**< PWM duty cycle register(23) (r/w): Channel 2 duty cycle (8-bit) MSB */ PWM_DUTY_CH3_LSB = 24, /**< PWM duty cycle register(24) (r/w): Channel 3 duty cycle (8-bit) LSB */ PWM_DUTY_CH3_MSB = 31 /**< PWM duty cycle register(31) (r/w): Channel 3 duty cycle (8-bit) MSB */ }; /**@}*/ /**********************************************************************//** * @name IO Device: Custom Functions Unit 0 (CFU0) **************************************************************************/ /**@{*/ /** CFU0 register 0 ((r)/(w)) */ #define CFU0_REG_0 (*(IO_REG32 0xFFFFFFC0UL)) // (r)/(w): CFU0 register 0, user-defined /** CFU0 register 1 ((r)/(w)) */ #define CFU0_REG_1 (*(IO_REG32 0xFFFFFFC4UL)) // (r)/(w): CFU0 register 1, user-defined /** CFU0 register 2 ((r)/(w)) */ #define CFU0_REG_2 (*(IO_REG32 0xFFFFFFC8UL)) // (r)/(w): CFU0 register 2, user-defined /** CFU0 register 3 ((r)/(w)) */ #define CFU0_REG_3 (*(IO_REG32 0xFFFFFFCCUL)) // (r)/(w): CFU0 register 3, user-defined /**@}*/ /**********************************************************************//** * @name IO Device: Custom Functions Unit 1 (CFU1) **************************************************************************/ /**@{*/ /** CFU1 register 0 ((r)/(w)) */ #define CFU1_REG_0 (*(IO_REG32 0xFFFFFFD0UL)) // (r)/(w): CFU1 register 0, user-defined /** CFU1 register 1 ((r)/(w)) */ #define CFU1_REG_1 (*(IO_REG32 0xFFFFFFD4UL)) // (r)/(w): CFU1 register 1, user-defined /** CFU1 register 2 ((r)/(w)) */ #define CFU1_REG_2 (*(IO_REG32 0xFFFFFFD8UL)) // (r)/(w): CFU1 register 2, user-defined /** CFU1 register 3 ((r)/(w)) */ #define CFU1_REG_3 (*(IO_REG32 0xFFFFFFDCUL)) // (r)/(w): CFU1 register 3, user-defined /**@}*/ /**********************************************************************//** * @name IO Device: System Configuration Info Memory (SYSINFO) **************************************************************************/ /**@{*/ /** SYSINFO(0): Clock speed */ #define SYSINFO_CLK (*(IO_ROM32 0xFFFFFFE0UL)) /** SYSINFO(1): Custom user code (via "USER_CODE" generic) */ #define SYSINFO_USER_CODE (*(IO_ROM32 0xFFFFFFE4UL)) /** SYSINFO(2): Clock speed */ #define SYSINFO_FEATURES (*(IO_ROM32 0xFFFFFFE8UL)) /** SYSINFO(3): Cache configuration */ #define SYSINFO_CACHE (*(IO_ROM32 0xFFFFFFECUL)) /** SYSINFO(4): Instruction memory address space base */ #define SYSINFO_ISPACE_BASE (*(IO_ROM32 0xFFFFFFF0UL)) /** SYSINFO(5): Data memory address space base */ #define SYSINFO_DSPACE_BASE (*(IO_ROM32 0xFFFFFFF4UL)) /** SYSINFO(6): Internal instruction memory (IMEM) size in bytes */ #define SYSINFO_IMEM_SIZE (*(IO_ROM32 0xFFFFFFF8UL)) /** SYSINFO(7): Internal data memory (DMEM) size in bytes */ #define SYSINFO_DMEM_SIZE (*(IO_ROM32 0xFFFFFFFCUL)) /**@}*/ /**********************************************************************//** * SYSINFO_FEATURES (r/-): Implemented processor devices/features **************************************************************************/ enum NEORV32_SYSINFO_FEATURES_enum { SYSINFO_FEATURES_BOOTLOADER = 0, /**< SYSINFO_FEATURES (0) (r/-): Bootloader implemented when 1 (via BOOTLOADER_USE generic) */ SYSINFO_FEATURES_MEM_EXT = 1, /**< SYSINFO_FEATURES (1) (r/-): External bus interface implemented when 1 (via MEM_EXT_USE generic) */ SYSINFO_FEATURES_MEM_INT_IMEM = 2, /**< SYSINFO_FEATURES (2) (r/-): Processor-internal instruction memory implemented when 1 (via MEM_INT_IMEM_USE generic) */ SYSINFO_FEATURES_MEM_INT_IMEM_ROM = 3, /**< SYSINFO_FEATURES (3) (r/-): Processor-internal instruction memory implemented as ROM when 1 (via MEM_INT_IMEM_ROM generic) */ SYSINFO_FEATURES_MEM_INT_DMEM = 4, /**< SYSINFO_FEATURES (4) (r/-): Processor-internal data memory implemented when 1 (via MEM_INT_DMEM_USE generic) */ SYSINFO_FEATURES_MEM_EXT_ENDIAN = 5, /**< SYSINFO_FEATURES (5) (r/-): External bus interface uses BIG-endian byte-order when 1 (via package.xbus_big_endian_c constant) */ SYSINFO_FEATURES_ICACHE = 6, /**< SYSINFO_FEATURES (6) (r/-): Processor-internal instruction cache implemented when 1 (via ICACHE_USE generic) */ SYSINFO_FEATURES_IO_GPIO = 16, /**< SYSINFO_FEATURES (16) (r/-): General purpose input/output port unit implemented when 1 (via IO_GPIO_USE generic) */ SYSINFO_FEATURES_IO_MTIME = 17, /**< SYSINFO_FEATURES (17) (r/-): Machine system timer implemented when 1 (via IO_MTIME_USE generic) */ SYSINFO_FEATURES_IO_UART = 18, /**< SYSINFO_FEATURES (18) (r/-): Universal asynchronous receiver/transmitter implemented when 1 (via IO_UART_USE generic) */ SYSINFO_FEATURES_IO_SPI = 19, /**< SYSINFO_FEATURES (19) (r/-): Serial peripheral interface implemented when 1 (via IO_SPI_USE generic) */ SYSINFO_FEATURES_IO_TWI = 20, /**< SYSINFO_FEATURES (20) (r/-): Two-wire interface implemented when 1 (via IO_TWI_USE generic) */ SYSINFO_FEATURES_IO_PWM = 21, /**< SYSINFO_FEATURES (21) (r/-): Pulse-width modulation unit implemented when 1 (via IO_PWM_USE generic) */ SYSINFO_FEATURES_IO_WDT = 22, /**< SYSINFO_FEATURES (22) (r/-): Watchdog timer implemented when 1 (via IO_WDT_USE generic) */ SYSINFO_FEATURES_IO_CFU0 = 23, /**< SYSINFO_FEATURES (23) (r/-): Custom functions unit 0 implemented when 1 (via IO_CFU0_USE generic) */ SYSINFO_FEATURES_IO_TRNG = 24, /**< SYSINFO_FEATURES (24) (r/-): True random number generator implemented when 1 (via IO_TRNG_USE generic) */ SYSINFO_FEATURES_IO_CFU1 = 25 /**< SYSINFO_FEATURES (25) (r/-): Custom functions unit 1 implemented when 1 (via IO_CFU1_USE generic) */ }; /**********************************************************************//** * SYSINFO_CACHE (r/-): Cache configuration **************************************************************************/ enum NEORV32_SYSINFO_CACHE_enum { SYSINFO_CACHE_IC_BLOCK_SIZE_0 = 0, /**< SYSINFO_CACHE (0) (r/-): i-cache: log2(Block size in bytes), bit 0 (via ICACHE_BLOCK_SIZE generic) */ SYSINFO_CACHE_IC_BLOCK_SIZE_1 = 1, /**< SYSINFO_CACHE (1) (r/-): i-cache: log2(Block size in bytes), bit 1 (via ICACHE_BLOCK_SIZE generic) */ SYSINFO_CACHE_IC_BLOCK_SIZE_2 = 2, /**< SYSINFO_CACHE (2) (r/-): i-cache: log2(Block size in bytes), bit 2 (via ICACHE_BLOCK_SIZE generic) */ SYSINFO_CACHE_IC_BLOCK_SIZE_3 = 3, /**< SYSINFO_CACHE (3) (r/-): i-cache: log2(Block size in bytes), bit 3 (via ICACHE_BLOCK_SIZE generic) */ SYSINFO_CACHE_IC_NUM_BLOCKS_0 = 4, /**< SYSINFO_CACHE (4) (r/-): i-cache: log2(Number of cache blocks/pages/lines), bit 0 (via ICACHE_NUM_BLOCKS generic) */ SYSINFO_CACHE_IC_NUM_BLOCKS_1 = 5, /**< SYSINFO_CACHE (5) (r/-): i-cache: log2(Number of cache blocks/pages/lines), bit 1 (via ICACHE_NUM_BLOCKS generic) */ SYSINFO_CACHE_IC_NUM_BLOCKS_2 = 6, /**< SYSINFO_CACHE (6) (r/-): i-cache: log2(Number of cache blocks/pages/lines), bit 2 (via ICACHE_NUM_BLOCKS generic) */ SYSINFO_CACHE_IC_NUM_BLOCKS_3 = 7, /**< SYSINFO_CACHE (7) (r/-): i-cache: log2(Number of cache blocks/pages/lines), bit 3 (via ICACHE_NUM_BLOCKS generic) */ SYSINFO_CACHE_IC_ASSOCIATIVITY_0 = 8, /**< SYSINFO_CACHE (10) (r/-): i-cache: log2(associativity), bit 0 (always 0 -> direct mapped) */ SYSINFO_CACHE_IC_ASSOCIATIVITY_1 = 9, /**< SYSINFO_CACHE (11) (r/-): i-cache: log2(associativity), bit 1 (always 0 -> direct mapped) */ SYSINFO_CACHE_IC_ASSOCIATIVITY_2 = 10, /**< SYSINFO_CACHE (12) (r/-): i-cache: log2(associativity), bit 2 (always 0 -> direct mapped) */ SYSINFO_CACHE_IC_ASSOCIATIVITY_3 = 11, /**< SYSINFO_CACHE (13) (r/-): i-cache: log2(associativity), bit 3 (always 0 -> direct mapped) */ }; // ---------------------------------------------------------------------------- // Include all IO driver headers // ---------------------------------------------------------------------------- // cpu core #include "neorv32_cpu.h" // neorv32 runtime environment #include "neorv32_rte.h" // io/peripheral devices #include "neorv32_cfu.h" #include "neorv32_gpio.h" #include "neorv32_mtime.h" #include "neorv32_pwm.h" #include "neorv32_spi.h" #include "neorv32_trng.h" #include "neorv32_twi.h" #include "neorv32_uart.h" #include "neorv32_wdt.h" #endif // neorv32_h
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