| Line 59... |
Line 59... |
/**********************************************************************//**
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/**********************************************************************//**
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* Available CPU Control and Status Registers (CSRs)
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* Available CPU Control and Status Registers (CSRs)
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**************************************************************************/
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**************************************************************************/
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enum NEORV32_CPU_CSRS_enum {
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enum NEORV32_CPU_CSRS_enum {
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CSR_MSTATUS = 0x300, /**< 0x300 - mstatus (r/w): Machine status register */
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CSR_MSTATUS = 0x300, /**< 0x300 - mstatus (r/w): Machine status register */
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CSR_MISA = 0x301, /**< 0x301 - misa (r/-): CPU ISA and extensions */
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CSR_MISA = 0x301, /**< 0x301 - misa (r/-): CPU ISA and extensions (read-only in NEORV32) */
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CSR_MIE = 0x304, /**< 0x304 - mie (r/w): Machine interrupt-enable register */
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CSR_MIE = 0x304, /**< 0x304 - mie (r/w): Machine interrupt-enable register */
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CSR_MTVEC = 0x305, /**< 0x305 - mtvec (r/w): Machine trap-handler base address (for ALL traps) */
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CSR_MTVEC = 0x305, /**< 0x305 - mtvec (r/w): Machine trap-handler base address (for ALL traps) */
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CSR_MSCRATCH = 0x340, /**< 0x340 - mscratch (r/w): Machine scratch register */
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CSR_MSCRATCH = 0x340, /**< 0x340 - mscratch (r/w): Machine scratch register */
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CSR_MEPC = 0x341, /**< 0x341 - mepc (r/w): Machine exception program counter */
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CSR_MEPC = 0x341, /**< 0x341 - mepc (r/w): Machine exception program counter */
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CSR_MCAUSE = 0x342, /**< 0x342 - mcause (r/-): Machine trap cause */
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CSR_MCAUSE = 0x342, /**< 0x342 - mcause (r/w): Machine trap cause */
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CSR_MTVAL = 0x343, /**< 0x343 - mtval (r/-): Machine bad address or instruction */
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CSR_MTVAL = 0x343, /**< 0x343 - mtval (r/w): Machine bad address or instruction */
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CSR_MIP = 0x344, /**< 0x344 - mip (r/w): Machine interrupt pending register */
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CSR_MIP = 0x344, /**< 0x344 - mip (r/w): Machine interrupt pending register */
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CSR_MCYCLE = 0xb00, /**< 0xb00 - mcycle (r/w): Machine cycle counter low word */
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CSR_MCYCLE = 0xb00, /**< 0xb00 - mcycle (r/w): Machine cycle counter low word */
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CSR_MINSTRET = 0xb02, /**< 0xb02 - minstret (r/w): Machine instructions-retired counter low word */
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CSR_MINSTRET = 0xb02, /**< 0xb02 - minstret (r/w): Machine instructions-retired counter low word */
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CSR_MCYCLEH = 0xb80, /**< 0xb80 - mcycleh (r/w): Machine cycle counter high word */
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CSR_MCYCLEH = 0xb80, /**< 0xb80 - mcycleh (r/w): Machine cycle counter high word - only 20-bit wide!*/
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CSR_MINSTRETH = 0xb82, /**< 0xb82 - minstreth (r/w): Machine instructions-retired counter high word */
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CSR_MINSTRETH = 0xb82, /**< 0xb82 - minstreth (r/w): Machine instructions-retired counter high word - only 20-bit wide! */
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CSR_CYCLE = 0xc00, /**< 0xc00 - cycle (r/-): Cycle counter low word */
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CSR_CYCLE = 0xc00, /**< 0xc00 - cycle (r/-): Cycle counter low word (from MCYCLE) */
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CSR_TIME = 0xc01, /**< 0xc01 - time (r/-): Timer low word (from MTIME.TIME) */
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CSR_TIME = 0xc01, /**< 0xc01 - time (r/-): Timer low word (from MTIME.TIME_LO) */
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CSR_INSTRET = 0xc02, /**< 0xc02 - instret (r/-): Instructions-retired counter low word */
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CSR_INSTRET = 0xc02, /**< 0xc02 - instret (r/-): Instructions-retired counter low word (from MINSTRET) */
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CSR_CYCLEH = 0xc80, /**< 0xc80 - cycleh (r/-): Cycle counter high word */
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CSR_CYCLEH = 0xc80, /**< 0xc80 - cycleh (r/-): Cycle counter high word (from MCYCLEH) - only 20-bit wide! */
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CSR_TIMEH = 0xc81, /**< 0xc81 - timeh (r/-): Timer high word (from MTIME.TIME) */
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CSR_TIMEH = 0xc81, /**< 0xc81 - timeh (r/-): Timer high word (from MTIME.TIME_HI) */
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CSR_INSTRETH = 0xc82, /**< 0xc82 - instreth (r/-): Instructions-retired counter high word */
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CSR_INSTRETH = 0xc82, /**< 0xc82 - instreth (r/-): Instructions-retired counter high word (from MINSTRETH) - only 20-bit wide! */
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CSR_MVENDORID = 0xf11, /**< 0xf11 - mvendorid (r/-): Vendor ID */
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CSR_MARCHID = 0xf12, /**< 0xf12 - marchid (r/-): Architecture ID */
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CSR_MIMPID = 0xf13, /**< 0xf13 - mimpid (r/-): Implementation ID/version */
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CSR_MIMPID = 0xf13, /**< 0xf13 - mimpid (r/-): Implementation ID/version */
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CSR_MHARTID = 0xf14, /**< 0xf14 - mhartid (r/-): Hardware thread ID (via HART_ID generic) */
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CSR_MHARTID = 0xf14 /**< 0xf14 - mhartid (r/-): Hardware thread ID (always 0) */
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CSR_MFEATURES = 0xfc0, /**< 0xfc0 - CUSTOM (r/-): Implemented processor devices/features (via IO_x_USE generics) */
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CSR_MCLOCK = 0xfc1, /**< 0xfc1 - CUSTOM (r/-): Processor primary clock spedd in Hz (via CLOCK_FREQUENCY generic)*/
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CSR_MISPACEBASE = 0xfc4, /**< 0xfc4 - CUSTOM (r/-): Base address of instruction memory space (via MEM_ISPACE_BASE generic) */
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CSR_MDSPACEBASE = 0xfc5, /**< 0xfc5 - CUSTOM (r/-): Base address of data memory space (via MEM_DSPACE_BASE generic) */
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CSR_MISPACESIZE = 0xfc6, /**< 0xfc6 - CUSTOM (r/-): Total size of instruction memory space in byte (via MEM_ISPACE_SIZE generic) */
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CSR_MDSPACESIZE = 0xfc7 /**< 0xfc7 - CUSTOM (r/-): Total size of data memory space in byte (via MEM_DSPACE_SIZE generic) */
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};
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};
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/**********************************************************************//**
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/**********************************************************************//**
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* CPU <b>mstatus</b> CSR (r/w): Machine status (RISC-V spec.)
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* CPU <b>mstatus</b> CSR (r/w): Machine status (RISC-V spec.)
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Line 102... |
|
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/**********************************************************************//**
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/**********************************************************************//**
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* CPU <b>mie</b> CSR (r/w): Machine interrupt enable (RISC-V spec.)
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* CPU <b>mie</b> CSR (r/w): Machine interrupt enable (RISC-V spec.)
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**************************************************************************/
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**************************************************************************/
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enum NEORV32_CPU_MIE_enum {
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enum NEORV32_CPU_MIE_enum {
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CPU_MIE_MSIE = 3, /**< CPU mie CSR (3): Machine software interrupt enable bit (r/w) */
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CPU_MIE_MSIE = 3, /**< CPU mie CSR (3): Machine software interrupt enable (r/w) */
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CPU_MIE_MTIE = 7, /**< CPU mie CSR (7): Machine timer interrupt (MTIME) enable bit (r/w) */
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CPU_MIE_MTIE = 7, /**< CPU mie CSR (7): Machine timer interrupt (MTIME) enable bit (r/w) */
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CPU_MIE_MEIE = 11 /**< CPU mie CSR (11): Machine external interrupt (via CLIC) enable bit (r/w) */
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CPU_MIE_MEIE = 11 /**< CPU mie CSR (11): Machine external interrupt (via CLIC) enable bit (r/w) */
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};
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};
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/**********************************************************************//**
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/**********************************************************************//**
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* CPU <b>mip</b> CSR (r/w): Machine interrupt pending (RISC-V spec.)
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* CPU <b>mip</b> CSR (r/-): Machine interrupt pending (RISC-V spec.)
|
**************************************************************************/
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**************************************************************************/
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enum NEORV32_CPU_MIP_enum {
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enum NEORV32_CPU_MIP_enum {
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CPU_MIP_MSIP = 3, /**< CPU mip CSR (3): Machine software interrupt pending (r/w), can be triggered when set */
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CPU_MIP_MSIP = 3, /**< CPU mip CSR (3): Machine software interrupt pending (r/-) */
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CPU_MIP_MTIP = 7, /**< CPU mip CSR (7): Machine timer interrupt (MTIME) pending (r/-) */
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CPU_MIP_MTIP = 7, /**< CPU mip CSR (7): Machine timer interrupt (MTIME) pending (r/-) */
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CPU_MIP_MEIP = 11 /**< CPU mip CSR (11): Machine external interrupt (via CLIC) pending (r/-) */
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CPU_MIP_MEIP = 11 /**< CPU mip CSR (11): Machine external interrupt (via CLIC) pending (r/-) */
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};
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};
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| Line 139... |
Line 134... |
CPU_MISA_MXL_HI_EXT = 31 /**< CPU misa CSR (31): MXL.Hi: CPU data width (r/-) */
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CPU_MISA_MXL_HI_EXT = 31 /**< CPU misa CSR (31): MXL.Hi: CPU data width (r/-) */
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};
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};
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/**********************************************************************//**
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/**********************************************************************//**
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* CPU <b>mfeatures</b> CSR (r/-): Implemented processor devices/features (CUSTOM)
|
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**************************************************************************/
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enum NEORV32_CPU_MFEATURES_enum {
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CPU_MFEATURES_BOOTLOADER = 0, /**< CPU mfeatures CSR (0) (r/-): Bootloader implemented when 1 (via BOOTLOADER_USE generic) */
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CPU_MFEATURES_MEM_EXT = 1, /**< CPU mfeatures CSR (1) (r/-): External bus interface implemented when 1 (via MEM_EXT_USE generic) */
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CPU_MFEATURES_MEM_INT_IMEM = 2, /**< CPU mfeatures CSR (2) (r/-): Processor-internal instruction memory implemented when 1 (via MEM_INT_IMEM_USE generic) */
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CPU_MFEATURES_MEM_INT_IMEM_ROM = 3, /**< CPU mfeatures CSR (3) (r/-): Processor-internal instruction memory implemented as ROM when 1 (via MEM_INT_IMEM_ROM generic) */
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CPU_MFEATURES_MEM_INT_DMEM = 4, /**< CPU mfeatures CSR (4) (r/-): Processor-internal data memory implemented when 1 (via MEM_INT_DMEM_USE generic) */
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CPU_MFEATURES_CSR_COUNTERS = 5, /**< CPU mfeatures CSR (5) (r/-): RISC-V performance counters implemented when 1 (via CSR_COUNTERS_USE generic) */
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CPU_MFEATURES_IO_GPIO = 16, /**< CPU mfeatures CSR (16) (r/-): General purpose input/output port unit implemented when 1 (via IO_GPIO_USE generic) */
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CPU_MFEATURES_IO_MTIME = 17, /**< CPU mfeatures CSR (17) (r/-): Machine system timer implemented when 1 (via IO_MTIME_USE generic) */
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CPU_MFEATURES_IO_UART = 18, /**< CPU mfeatures CSR (18) (r/-): Universal asynchronous receiver/transmitter implemented when 1 (via IO_UART_USE generic) */
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CPU_MFEATURES_IO_SPI = 19, /**< CPU mfeatures CSR (19) (r/-): Serial peripheral interface implemented when 1 (via IO_SPI_USE generic) */
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CPU_MFEATURES_IO_TWI = 20, /**< CPU mfeatures CSR (20) (r/-): Two-wire interface implemented when 1 (via IO_TWI_USE generic) */
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CPU_MFEATURES_IO_PWM = 21, /**< CPU mfeatures CSR (21) (r/-): Pulse-width modulation unit implemented when 1 (via IO_PWM_USE generic) */
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CPU_MFEATURES_IO_WDT = 22, /**< CPU mfeatures CSR (22) (r/-): Watchdog timer implemented when 1 (via IO_WDT_USE generic) */
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CPU_MFEATURES_IO_CLIC = 23, /**< CPU mfeatures CSR (23) (r/-): Core-local interrupt controller implemented when 1 (via IO_CLIC_USE generic) */
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CPU_MFEATURES_IO_TRNG = 24, /**< CPU mfeatures CSR (24) (r/-): True random number generator implemented when 1 (via IO_TRNG_USE generic) */
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CPU_MFEATURES_IO_DEVNULL = 25 /**< CPU mfeatures CSR (24) (r/-): Dummy device implemented when 1 (via IO_DEVNULL_USE generic) */
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};
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/**********************************************************************//**
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|
* Exception IDs.
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* Exception IDs.
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**************************************************************************/
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**************************************************************************/
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enum NEORV32_EXCEPTION_IDS_enum {
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enum NEORV32_EXCEPTION_IDS_enum {
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EXCID_I_MISALIGNED = 0, /**< 0: Instruction address misaligned */
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EXCID_I_MISALIGNED = 0, /**< 0: Instruction address misaligned */
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EXCID_I_ACCESS = 1, /**< 1: Instruction (bus) access fault */
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EXCID_I_ACCESS = 1, /**< 1: Instruction (bus) access fault */
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| Line 182... |
Line 153... |
EXCID_MEI = 27 /**< 16 + 11: Machine external interrupt (via CLIC) */
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EXCID_MEI = 27 /**< 16 + 11: Machine external interrupt (via CLIC) */
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};
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};
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/**********************************************************************//**
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/**********************************************************************//**
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* Exception codes from mcause CSR.
|
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**************************************************************************/
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enum NEORV32_EXCEPTION_CODES_enum {
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EXCCODE_I_MISALIGNED = 0x00000000, /**< 0: Instruction address misaligned */
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EXCCODE_I_ACCESS = 0x00000001, /**< 1: Instruction (bus) access fault */
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EXCCODE_I_ILLEGAL = 0x00000002, /**< 2: Illegal instruction */
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EXCCODE_BREAKPOINT = 0x00000003, /**< 3: Breakpoint (EBREAK instruction) */
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EXCCODE_L_MISALIGNED = 0x00000004, /**< 4: Load address misaligned */
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EXCCODE_L_ACCESS = 0x00000005, /**< 5: Load (bus) access fault */
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EXCCODE_S_MISALIGNED = 0x00000006, /**< 6: Store address misaligned */
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EXCCODE_S_ACCESS = 0x00000007, /**< 7: Store (bus) access fault */
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EXCCODE_MENV_CALL = 0x0000000b, /**< 11: Environment call from machine mode (ECALL instruction) */
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EXCCODE_MSI = 0x80000003, /**< 16 + 3: Machine software interrupt */
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EXCCODE_MTI = 0x80000007, /**< 16 + 7: Machine timer interrupt (via MTIME) */
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EXCCODE_MEI = 0x8000000b /**< 16 + 11: Machine external interrupt (via CLIC) */
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};
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|
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|
|
|
/**********************************************************************//**
|
* Processor clock prescalers
|
* Processor clock prescalers
|
**************************************************************************/
|
**************************************************************************/
|
enum NEORV32_CLOCK_PRSC_enum {
|
enum NEORV32_CLOCK_PRSC_enum {
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CLK_PRSC_2 = 0, /**< CPU_CLK / 2 */
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CLK_PRSC_2 = 0, /**< CPU_CLK / 2 */
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CLK_PRSC_4 = 1, /**< CPU_CLK / 4 */
|
CLK_PRSC_4 = 1, /**< CPU_CLK / 4 */
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| Line 510... |
Line 500... |
/**********************************************************************//**
|
/**********************************************************************//**
|
* @name IO Device: Dummy Device (DEVNULL)
|
* @name IO Device: Dummy Device (DEVNULL)
|
**************************************************************************/
|
**************************************************************************/
|
/**@{*/
|
/**@{*/
|
/** DEVNULL data register (r/w) */
|
/** DEVNULL data register (r/w) */
|
#define DEVNULL_DATA (*(IO_REG32 0xFFFFFFFCUL))
|
#define DEVNULL_DATA (*(IO_REG32 0xFFFFFFC8UL))
|
/**@}*/
|
/**@}*/
|
|
|
|
|
|
/**********************************************************************//**
|
|
* @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))
|
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/** SYSINFO(2): Clock speed */
|
|
#define SYSINFO_FEATURES (*(IO_ROM32 0xFFFFFFE8UL))
|
|
/** SYSINFO(3): reserved */
|
|
#define SYSINFO_reserved1 (*(IO_ROM32 0xFFFFFFECUL))
|
|
/** SYSINFO(4): Instruction memory address space base */
|
|
#define SYSINFO_ISPACE_BASE (*(IO_ROM32 0xFFFFFFF0UL))
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/** SYSINFO(5): Data memory address space base */
|
|
#define SYSINFO_DSPACE_BASE (*(IO_ROM32 0xFFFFFFF4UL))
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/** SYSINFO(6): Instruction memory address space size in bytes */
|
|
#define SYSINFO_ISPACE_SIZE (*(IO_ROM32 0xFFFFFFF8UL))
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/** SYSINFO(7): Data memory address space size in bytes */
|
|
#define SYSINFO_DSPACE_SIZE (*(IO_ROM32 0xFFFFFFFCUL))
|
|
/**@}*/
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|
|
|
|
|
/**********************************************************************//**
|
|
* SYSINFO_FEATURES (r/-): Implemented processor devices/features
|
|
**************************************************************************/
|
|
enum NEORV32_SYSINFO_FEATURES_enum {
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|
SYSINFO_FEATURES_BOOTLOADER = 0, /**< SYSINFO_FEATURES (0) (r/-): Bootloader implemented when 1 (via BOOTLOADER_USE generic) */
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SYSINFO_FEATURES_MEM_EXT = 1, /**< SYSINFO_FEATURES (1) (r/-): External bus interface implemented when 1 (via MEM_EXT_USE generic) */
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SYSINFO_FEATURES_MEM_INT_IMEM = 2, /**< SYSINFO_FEATURES (2) (r/-): Processor-internal instruction memory implemented when 1 (via MEM_INT_IMEM_USE generic) */
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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) */
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SYSINFO_FEATURES_MEM_INT_DMEM = 4, /**< SYSINFO_FEATURES (4) (r/-): Processor-internal data memory implemented when 1 (via MEM_INT_DMEM_USE generic) */
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SYSINFO_FEATURES_IO_GPIO = 16, /**< SYSINFO_FEATURES (16) (r/-): General purpose input/output port unit implemented when 1 (via IO_GPIO_USE generic) */
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SYSINFO_FEATURES_IO_MTIME = 17, /**< SYSINFO_FEATURES (17) (r/-): Machine system timer implemented when 1 (via IO_MTIME_USE generic) */
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SYSINFO_FEATURES_IO_UART = 18, /**< SYSINFO_FEATURES (18) (r/-): Universal asynchronous receiver/transmitter implemented when 1 (via IO_UART_USE generic) */
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SYSINFO_FEATURES_IO_SPI = 19, /**< SYSINFO_FEATURES (19) (r/-): Serial peripheral interface implemented when 1 (via IO_SPI_USE generic) */
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SYSINFO_FEATURES_IO_TWI = 20, /**< SYSINFO_FEATURES (20) (r/-): Two-wire interface implemented when 1 (via IO_TWI_USE generic) */
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SYSINFO_FEATURES_IO_PWM = 21, /**< SYSINFO_FEATURES (21) (r/-): Pulse-width modulation unit implemented when 1 (via IO_PWM_USE generic) */
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SYSINFO_FEATURES_IO_WDT = 22, /**< SYSINFO_FEATURES (22) (r/-): Watchdog timer implemented when 1 (via IO_WDT_USE generic) */
|
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SYSINFO_FEATURES_IO_CLIC = 23, /**< SYSINFO_FEATURES (23) (r/-): Core-local interrupt controller implemented when 1 (via IO_CLIC_USE generic) */
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SYSINFO_FEATURES_IO_TRNG = 24, /**< SYSINFO_FEATURES (24) (r/-): True random number generator implemented when 1 (via IO_TRNG_USE generic) */
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SYSINFO_FEATURES_IO_DEVNULL = 25 /**< SYSINFO_FEATURES (24) (r/-): Dummy device implemented when 1 (via IO_DEVNULL_USE generic) */
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};
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|
|
// ----------------------------------------------------------------------------
|
// ----------------------------------------------------------------------------
|
// Include all IO driver headers
|
// Include all IO driver headers
|
// ----------------------------------------------------------------------------
|
// ----------------------------------------------------------------------------
|
// cpu core
|
// cpu core
|
#include "neorv32_cpu.h"
|
#include "neorv32_cpu.h"
|
