OpenCores
URL https://opencores.org/ocsvn/neorv32/neorv32/trunk

Subversion Repositories neorv32

[/] [neorv32/] [trunk/] [rtl/] [core/] [neorv32_package.vhd] - Diff between revs 51 and 52

Go to most recent revision | Show entire file | Details | Blame | View Log

Rev 51 Rev 52
Line 58... Line 58... 
  constant pmp_num_regions_critical_c : natural := 8;
 
  constant pmp_num_regions_critical_c : natural := 8;
 
 
 
 
 
  -- Architecture Constants (do not modify!) ------------------------------------------------
 
  -- Architecture Constants (do not modify!) ------------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  constant data_width_c   : natural := 32; -- native data path width - do not change!
 
  constant data_width_c   : natural := 32; -- native data path width - do not change!
 
  constant hw_version_c   : std_ulogic_vector(31 downto 0) := x"01050200"; -- no touchy!
 
  constant hw_version_c   : std_ulogic_vector(31 downto 0) := x"01050204"; -- no touchy!
 
  constant pmp_max_r_c    : natural := 8; -- max PMP regions - FIXED!
 
  constant pmp_max_r_c    : natural := 8; -- max PMP regions - FIXED!
 
  constant archid_c       : natural := 19; -- official NEORV32 architecture ID - hands off!
 
  constant archid_c       : natural := 19; -- official NEORV32 architecture ID - hands off!
 
  constant rf_r0_is_reg_c : boolean := true; -- reg_file.r0 is a *physical register* that has to be initialized to zero by the CPU HW
 
  constant rf_r0_is_reg_c : boolean := true; -- reg_file.r0 is a *physical register* that has to be initialized to zero by the CPU HW
 
 
 
 
 
  -- Helper Functions -----------------------------------------------------------------------
 
  -- Helper Functions -----------------------------------------------------------------------
Line 201... Line 201... 
  constant uart1_base_c         : std_ulogic_vector(data_width_c-1 downto 0) := x"FFFFFFD0"; -- base address
 
  constant uart1_base_c         : std_ulogic_vector(data_width_c-1 downto 0) := x"FFFFFFD0"; -- base address
 
  constant uart1_size_c         : natural := 2*4; -- module's address space in bytes
 
  constant uart1_size_c         : natural := 2*4; -- module's address space in bytes
 
  constant uart1_ctrl_addr_c    : std_ulogic_vector(data_width_c-1 downto 0) := x"FFFFFFD0";
 
  constant uart1_ctrl_addr_c    : std_ulogic_vector(data_width_c-1 downto 0) := x"FFFFFFD0";
 
  constant uart1_rtx_addr_c     : std_ulogic_vector(data_width_c-1 downto 0) := x"FFFFFFD4";
 
  constant uart1_rtx_addr_c     : std_ulogic_vector(data_width_c-1 downto 0) := x"FFFFFFD4";
 
 
 
 
 
  -- reserved --
 
  -- Smart LED (WS2811/WS2812) Interface (NEOLED) --
 
--constant reserved_base_c      : std_ulogic_vector(data_width_c-1 downto 0) := x"FFFFFFD8"; -- base address
 
  constant neoled_base_c        : std_ulogic_vector(data_width_c-1 downto 0) := x"FFFFFFD8"; -- base address
 
--constant reserved_size_c      : natural := 2*4; -- module's address space in bytes
 
  constant neoled_size_c        : natural := 2*4; -- module's address space in bytes
 
 
 
  constant neoled_ctrl_addr_c   : std_ulogic_vector(data_width_c-1 downto 0) := x"FFFFFFD8";
 
 
 
  constant neoled_data_addr_c   : std_ulogic_vector(data_width_c-1 downto 0) := x"FFFFFFDC";
 
 
 
 
 
  -- System Information Memory (SYSINFO) --
 
  -- System Information Memory (SYSINFO) --
 
  constant sysinfo_base_c       : std_ulogic_vector(data_width_c-1 downto 0) := x"FFFFFFE0"; -- base address
 
  constant sysinfo_base_c       : std_ulogic_vector(data_width_c-1 downto 0) := x"FFFFFFE0"; -- base address
 
  constant sysinfo_size_c       : natural := 8*4; -- module's address space in bytes
 
  constant sysinfo_size_c       : natural := 8*4; -- module's address space in bytes
 
 
 
 
Line 250... Line 252... 
  constant ctrl_bus_rd_c        : natural := 31; -- read data request
 
  constant ctrl_bus_rd_c        : natural := 31; -- read data request
 
  constant ctrl_bus_wr_c        : natural := 32; -- write data request
 
  constant ctrl_bus_wr_c        : natural := 32; -- write data request
 
  constant ctrl_bus_if_c        : natural := 33; -- instruction fetch request
 
  constant ctrl_bus_if_c        : natural := 33; -- instruction fetch request
 
  constant ctrl_bus_mo_we_c     : natural := 34; -- memory address and data output register write enable
 
  constant ctrl_bus_mo_we_c     : natural := 34; -- memory address and data output register write enable
 
  constant ctrl_bus_mi_we_c     : natural := 35; -- memory data input register write enable
 
  constant ctrl_bus_mi_we_c     : natural := 35; -- memory data input register write enable
 
  constant ctrl_bus_unsigned_c  : natural := 36; -- is unsigned load
 
  constant ctrl_bus_wd_sel_c    : natural := 36; -- memory write-data source select (0=reg_file, 1=co-proc.)
 
  constant ctrl_bus_ierr_ack_c  : natural := 37; -- acknowledge instruction fetch bus exceptions
 
  constant ctrl_bus_unsigned_c  : natural := 37; -- is unsigned load
 
  constant ctrl_bus_derr_ack_c  : natural := 38; -- acknowledge data access bus exceptions
 
  constant ctrl_bus_ierr_ack_c  : natural := 38; -- acknowledge instruction fetch bus exceptions
 
  constant ctrl_bus_fence_c     : natural := 39; -- executed fence operation
 
  constant ctrl_bus_derr_ack_c  : natural := 39; -- acknowledge data access bus exceptions
 
  constant ctrl_bus_fencei_c    : natural := 40; -- executed fencei operation
 
  constant ctrl_bus_fence_c     : natural := 40; -- executed fence operation
 
  constant ctrl_bus_lock_c      : natural := 41; -- locked/exclusive bus access
 
  constant ctrl_bus_fencei_c    : natural := 41; -- executed fencei operation
 
 
 
  constant ctrl_bus_lock_c      : natural := 42; -- locked/exclusive bus access
 
  -- co-processors --
 
  -- co-processors --
 
  constant ctrl_cp_id_lsb_c     : natural := 42; -- cp select ID lsb
 
  constant ctrl_cp_id_lsb_c     : natural := 43; -- cp select ID lsb
 
  constant ctrl_cp_id_hsb_c     : natural := 43; -- cp select ID hsb
 
  constant ctrl_cp_id_hsb_c     : natural := 44; -- cp select ID hsb
 
  constant ctrl_cp_id_msb_c     : natural := 44; -- cp select ID msb
 
  constant ctrl_cp_id_msb_c     : natural := 45; -- cp select ID msb
 
 
 
  constant ctrl_cp_fpu_mem_we_c : natural := 46; -- fpu-cp memory-data write enable
 
  -- current privilege level --
 
  -- current privilege level --
 
  constant ctrl_priv_lvl_lsb_c  : natural := 45; -- privilege level lsb
 
  constant ctrl_priv_lvl_lsb_c  : natural := 47; -- privilege level lsb
 
  constant ctrl_priv_lvl_msb_c  : natural := 46; -- privilege level msb
 
  constant ctrl_priv_lvl_msb_c  : natural := 48; -- privilege level msb
 
  -- instruction's control blocks (used by cpu co-processors) --
 
  -- instruction's control blocks (used by cpu co-processors) --
 
  constant ctrl_ir_funct3_0_c   : natural := 47; -- funct3 bit 0
 
  constant ctrl_ir_funct3_0_c   : natural := 49; -- funct3 bit 0
 
  constant ctrl_ir_funct3_1_c   : natural := 48; -- funct3 bit 1
 
  constant ctrl_ir_funct3_1_c   : natural := 50; -- funct3 bit 1
 
  constant ctrl_ir_funct3_2_c   : natural := 49; -- funct3 bit 2
 
  constant ctrl_ir_funct3_2_c   : natural := 51; -- funct3 bit 2
 
  constant ctrl_ir_funct12_0_c  : natural := 50; -- funct12 bit 0
 
  constant ctrl_ir_funct12_0_c  : natural := 52; -- funct12 bit 0
 
  constant ctrl_ir_funct12_1_c  : natural := 51; -- funct12 bit 1
 
  constant ctrl_ir_funct12_1_c  : natural := 53; -- funct12 bit 1
 
  constant ctrl_ir_funct12_2_c  : natural := 52; -- funct12 bit 2
 
  constant ctrl_ir_funct12_2_c  : natural := 54; -- funct12 bit 2
 
  constant ctrl_ir_funct12_3_c  : natural := 53; -- funct12 bit 3
 
  constant ctrl_ir_funct12_3_c  : natural := 55; -- funct12 bit 3
 
  constant ctrl_ir_funct12_4_c  : natural := 54; -- funct12 bit 4
 
  constant ctrl_ir_funct12_4_c  : natural := 56; -- funct12 bit 4
 
  constant ctrl_ir_funct12_5_c  : natural := 55; -- funct12 bit 5
 
  constant ctrl_ir_funct12_5_c  : natural := 57; -- funct12 bit 5
 
  constant ctrl_ir_funct12_6_c  : natural := 56; -- funct12 bit 6
 
  constant ctrl_ir_funct12_6_c  : natural := 58; -- funct12 bit 6
 
  constant ctrl_ir_funct12_7_c  : natural := 57; -- funct12 bit 7
 
  constant ctrl_ir_funct12_7_c  : natural := 59; -- funct12 bit 7
 
  constant ctrl_ir_funct12_8_c  : natural := 58; -- funct12 bit 8
 
  constant ctrl_ir_funct12_8_c  : natural := 60; -- funct12 bit 8
 
  constant ctrl_ir_funct12_9_c  : natural := 59; -- funct12 bit 9
 
  constant ctrl_ir_funct12_9_c  : natural := 61; -- funct12 bit 9
 
  constant ctrl_ir_funct12_10_c : natural := 60; -- funct12 bit 10
 
  constant ctrl_ir_funct12_10_c : natural := 62; -- funct12 bit 10
 
  constant ctrl_ir_funct12_11_c : natural := 61; -- funct12 bit 11
 
  constant ctrl_ir_funct12_11_c : natural := 63; -- funct12 bit 11
 
  constant ctrl_ir_opcode7_0_c  : natural := 62; -- opcode7 bit 0
 
  constant ctrl_ir_opcode7_0_c  : natural := 64; -- opcode7 bit 0
 
  constant ctrl_ir_opcode7_1_c  : natural := 63; -- opcode7 bit 1
 
  constant ctrl_ir_opcode7_1_c  : natural := 65; -- opcode7 bit 1
 
  constant ctrl_ir_opcode7_2_c  : natural := 64; -- opcode7 bit 2
 
  constant ctrl_ir_opcode7_2_c  : natural := 66; -- opcode7 bit 2
 
  constant ctrl_ir_opcode7_3_c  : natural := 65; -- opcode7 bit 3
 
  constant ctrl_ir_opcode7_3_c  : natural := 67; -- opcode7 bit 3
 
  constant ctrl_ir_opcode7_4_c  : natural := 66; -- opcode7 bit 4
 
  constant ctrl_ir_opcode7_4_c  : natural := 68; -- opcode7 bit 4
 
  constant ctrl_ir_opcode7_5_c  : natural := 67; -- opcode7 bit 5
 
  constant ctrl_ir_opcode7_5_c  : natural := 69; -- opcode7 bit 5
 
  constant ctrl_ir_opcode7_6_c  : natural := 68; -- opcode7 bit 6
 
  constant ctrl_ir_opcode7_6_c  : natural := 70; -- opcode7 bit 6
 
  -- CPU status --
 
  -- CPU status --
 
  constant ctrl_sleep_c         : natural := 69; -- set when CPU is in sleep mode
 
  constant ctrl_sleep_c         : natural := 71; -- set when CPU is in sleep mode
 
  -- control bus size --
 
  -- control bus size --
 
  constant ctrl_width_c         : natural := 70; -- control bus size
 
  constant ctrl_width_c         : natural := 72; -- control bus size
 
 
 
 
 
  -- Comparator Bus -------------------------------------------------------------------------
 
  -- Comparator Bus -------------------------------------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  constant cmp_equal_c : natural := 0;
 
  constant cmp_equal_c : natural := 0;
 
  constant cmp_less_c  : natural := 1; -- for signed and unsigned comparisons
 
  constant cmp_less_c  : natural := 1; -- for signed and unsigned comparisons
Line 338... Line 342... 
  constant opcode_load_c   : std_ulogic_vector(6 downto 0) := "0000011"; -- load (data type via funct3)
 
  constant opcode_load_c   : std_ulogic_vector(6 downto 0) := "0000011"; -- load (data type via funct3)
 
  constant opcode_store_c  : std_ulogic_vector(6 downto 0) := "0100011"; -- store (data type via funct3)
 
  constant opcode_store_c  : std_ulogic_vector(6 downto 0) := "0100011"; -- store (data type via funct3)
 
  -- system/csr --
 
  -- system/csr --
 
  constant opcode_fence_c  : std_ulogic_vector(6 downto 0) := "0001111"; -- fence / fence.i
 
  constant opcode_fence_c  : std_ulogic_vector(6 downto 0) := "0001111"; -- fence / fence.i
 
  constant opcode_syscsr_c : std_ulogic_vector(6 downto 0) := "1110011"; -- system/csr access (type via funct3)
 
  constant opcode_syscsr_c : std_ulogic_vector(6 downto 0) := "1110011"; -- system/csr access (type via funct3)
 
  -- atomic operations (A) --
 
  -- atomic memory access (A) --
 
  constant opcode_atomic_c : std_ulogic_vector(6 downto 0) := "0101111"; -- atomic operations (A extension)
 
  constant opcode_atomic_c : std_ulogic_vector(6 downto 0) := "0101111"; -- atomic operations (A extension)
 
 
 
  -- floating point operations (F/D/H/Q) --
 
 
 
  constant opcode_flw_c    : std_ulogic_vector(6 downto 0) := "0000111"; -- load word
 
 
 
  constant opcode_fsw_c    : std_ulogic_vector(6 downto 0) := "0100111"; -- store word
 
 
 
  constant opcode_fop_c    : std_ulogic_vector(6 downto 0) := "1010011"; -- dual/single opearand operation
 
 
 
  constant opcode_fmac_c   : std_ulogic_vector(6 downto 0) := "100--11"; -- fused multiply-add (three operands)
 
 
 
 
 
  -- RISC-V Funct3 --------------------------------------------------------------------------
 
  -- RISC-V Funct3 --------------------------------------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  -- control flow --
 
  -- control flow --
 
  constant funct3_beq_c    : std_ulogic_vector(2 downto 0) := "000"; -- branch if equal
 
  constant funct3_beq_c    : std_ulogic_vector(2 downto 0) := "000"; -- branch if equal
Line 394... Line 403... 
  -- -------------------------------------------------------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  -- atomic operations --
 
  -- atomic operations --
 
  constant funct5_a_lr_c : std_ulogic_vector(4 downto 0) := "00010"; -- LR
 
  constant funct5_a_lr_c : std_ulogic_vector(4 downto 0) := "00010"; -- LR
 
  constant funct5_a_sc_c : std_ulogic_vector(4 downto 0) := "00011"; -- SC
 
  constant funct5_a_sc_c : std_ulogic_vector(4 downto 0) := "00011"; -- SC
 
 
 
 
 
 
 
  -- RISC-V Floating-Point Formats ----------------------------------------------------------
 
 
 
  -- -------------------------------------------------------------------------------------------
 
 
 
  constant float_single_c : std_ulogic_vector(1 downto 0) := "00"; -- single-precisions (32-bit)
 
 
 
  constant float_double_c : std_ulogic_vector(1 downto 0) := "01"; -- double-precisions (64-bit)
 
 
 
  constant float_half_c   : std_ulogic_vector(1 downto 0) := "10"; -- half-precisions (16-bit)
 
 
 
  constant float_quad_c   : std_ulogic_vector(1 downto 0) := "11"; -- quad-precisions (64-bit)
 
 
 
 
 
  -- RISC-V CSR Addresses -------------------------------------------------------------------
 
  -- RISC-V CSR Addresses -------------------------------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  -- read/write CSRs --
 
  -- read/write CSRs --
 
 
 
  constant csr_class_float_c    : std_ulogic_vector(07 downto 0) := x"00"; -- floating point
 
 
 
  constant csr_fflags_c         : std_ulogic_vector(11 downto 0) := x"001";
 
 
 
  constant csr_frm_c            : std_ulogic_vector(11 downto 0) := x"002";
 
 
 
  constant csr_fcsr_c           : std_ulogic_vector(11 downto 0) := x"003";
 
 
 
  --
 
 
 
  constant csr_setup_c          : std_ulogic_vector(07 downto 0) := x"30"; -- trap setup
 
  constant csr_mstatus_c        : std_ulogic_vector(11 downto 0) := x"300";
 
  constant csr_mstatus_c        : std_ulogic_vector(11 downto 0) := x"300";
 
  constant csr_misa_c           : std_ulogic_vector(11 downto 0) := x"301";
 
  constant csr_misa_c           : std_ulogic_vector(11 downto 0) := x"301";
 
  constant csr_mie_c            : std_ulogic_vector(11 downto 0) := x"304";
 
  constant csr_mie_c            : std_ulogic_vector(11 downto 0) := x"304";
 
  constant csr_mtvec_c          : std_ulogic_vector(11 downto 0) := x"305";
 
  constant csr_mtvec_c          : std_ulogic_vector(11 downto 0) := x"305";
 
  constant csr_mcounteren_c     : std_ulogic_vector(11 downto 0) := x"306";
 
  constant csr_mcounteren_c     : std_ulogic_vector(11 downto 0) := x"306";
 
 
 
  --
 
  constant csr_mstatush_c       : std_ulogic_vector(11 downto 0) := x"310";
 
  constant csr_mstatush_c       : std_ulogic_vector(11 downto 0) := x"310";
 
  --
 
  --
 
  constant csr_mcountinhibit_c  : std_ulogic_vector(11 downto 0) := x"320";
 
  constant csr_mcountinhibit_c  : std_ulogic_vector(11 downto 0) := x"320";
 
  --
 
  --
 
  constant csr_mhpmevent3_c     : std_ulogic_vector(11 downto 0) := x"323";
 
  constant csr_mhpmevent3_c     : std_ulogic_vector(11 downto 0) := x"323";
Line 436... Line 459... 
  constant csr_mhpmevent28_c    : std_ulogic_vector(11 downto 0) := x"33c";
 
  constant csr_mhpmevent28_c    : std_ulogic_vector(11 downto 0) := x"33c";
 
  constant csr_mhpmevent29_c    : std_ulogic_vector(11 downto 0) := x"33d";
 
  constant csr_mhpmevent29_c    : std_ulogic_vector(11 downto 0) := x"33d";
 
  constant csr_mhpmevent30_c    : std_ulogic_vector(11 downto 0) := x"33e";
 
  constant csr_mhpmevent30_c    : std_ulogic_vector(11 downto 0) := x"33e";
 
  constant csr_mhpmevent31_c    : std_ulogic_vector(11 downto 0) := x"33f";
 
  constant csr_mhpmevent31_c    : std_ulogic_vector(11 downto 0) := x"33f";
 
  --
 
  --
 
 
 
  constant csr_class_trap_c     : std_ulogic_vector(07 downto 0) := x"34"; -- machine trap handling
 
  constant csr_mscratch_c       : std_ulogic_vector(11 downto 0) := x"340";
 
  constant csr_mscratch_c       : std_ulogic_vector(11 downto 0) := x"340";
 
  constant csr_mepc_c           : std_ulogic_vector(11 downto 0) := x"341";
 
  constant csr_mepc_c           : std_ulogic_vector(11 downto 0) := x"341";
 
  constant csr_mcause_c         : std_ulogic_vector(11 downto 0) := x"342";
 
  constant csr_mcause_c         : std_ulogic_vector(11 downto 0) := x"342";
 
  constant csr_mtval_c          : std_ulogic_vector(11 downto 0) := x"343";
 
  constant csr_mtval_c          : std_ulogic_vector(11 downto 0) := x"343";
 
  constant csr_mip_c            : std_ulogic_vector(11 downto 0) := x"344";
 
  constant csr_mip_c            : std_ulogic_vector(11 downto 0) := x"344";
 
  --
 
  --
 
 
 
  constant csr_class_pmpcfg_c   : std_ulogic_vector(07 downto 0) := x"3a"; -- pmp configuration
 
  constant csr_pmpcfg0_c        : std_ulogic_vector(11 downto 0) := x"3a0";
 
  constant csr_pmpcfg0_c        : std_ulogic_vector(11 downto 0) := x"3a0";
 
  constant csr_pmpcfg1_c        : std_ulogic_vector(11 downto 0) := x"3a1";
 
  constant csr_pmpcfg1_c        : std_ulogic_vector(11 downto 0) := x"3a1";
 
  constant csr_pmpcfg2_c        : std_ulogic_vector(11 downto 0) := x"3a2";
 
  constant csr_pmpcfg2_c        : std_ulogic_vector(11 downto 0) := x"3a2";
 
  constant csr_pmpcfg3_c        : std_ulogic_vector(11 downto 0) := x"3a3";
 
  constant csr_pmpcfg3_c        : std_ulogic_vector(11 downto 0) := x"3a3";
 
  constant csr_pmpcfg4_c        : std_ulogic_vector(11 downto 0) := x"3a4";
 
  constant csr_pmpcfg4_c        : std_ulogic_vector(11 downto 0) := x"3a4";
Line 673... Line 698... 
  -- -------------------------------------------------------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  constant cp_sel_muldiv_c   : std_ulogic_vector(2 downto 0) := "000"; -- multiplication/division operations ('M' extension)
 
  constant cp_sel_muldiv_c   : std_ulogic_vector(2 downto 0) := "000"; -- multiplication/division operations ('M' extension)
 
  constant cp_sel_atomic_c   : std_ulogic_vector(2 downto 0) := "001"; -- atomic operations; success/failure evaluation ('A' extension)
 
  constant cp_sel_atomic_c   : std_ulogic_vector(2 downto 0) := "001"; -- atomic operations; success/failure evaluation ('A' extension)
 
  constant cp_sel_bitmanip_c : std_ulogic_vector(2 downto 0) := "010"; -- bit manipulation ('B' extension)
 
  constant cp_sel_bitmanip_c : std_ulogic_vector(2 downto 0) := "010"; -- bit manipulation ('B' extension)
 
  constant cp_sel_csr_rd_c   : std_ulogic_vector(2 downto 0) := "011"; -- CSR read access ('Zicsr' extension)
 
  constant cp_sel_csr_rd_c   : std_ulogic_vector(2 downto 0) := "011"; -- CSR read access ('Zicsr' extension)
 
--constant cp_reserved_c     : std_ulogic_vector(2 downto 0) := "100"; -- reserved
 
  constant cp_sel_fpu_c      : std_ulogic_vector(2 downto 0) := "100"; -- loating-point unit ('F' extension)
 
--constant cp_reserved_c     : std_ulogic_vector(2 downto 0) := "101"; -- reserved
 
--constant cp_sel_reserved_c : std_ulogic_vector(2 downto 0) := "101"; -- reserved
 
--constant cp_reserved_c     : std_ulogic_vector(2 downto 0) := "110"; -- reserved
 
--constant cp_sel_reserved_c : std_ulogic_vector(2 downto 0) := "110"; -- reserved
 
--constant cp_reserved_c     : std_ulogic_vector(2 downto 0) := "111"; -- reserved
 
--constant cp_sel_reserved_c : std_ulogic_vector(2 downto 0) := "111"; -- reserved
 
 
 
 
 
  -- ALU Function Codes ---------------------------------------------------------------------
 
  -- ALU Function Codes ---------------------------------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  -- arithmetic core --
 
  -- arithmetic core --
 
  constant alu_arith_cmd_addsub_c : std_ulogic := '0'; -- r.arith <= A +/- B
 
  constant alu_arith_cmd_addsub_c : std_ulogic := '0'; -- r.arith <= A +/- B
Line 855... Line 880... 
      IO_TWI_EN                    : boolean := true;   -- implement two-wire interface (TWI)?
 
      IO_TWI_EN                    : boolean := true;   -- implement two-wire interface (TWI)?
 
      IO_PWM_EN                    : boolean := true;   -- implement pulse-width modulation unit (PWM)?
 
      IO_PWM_EN                    : boolean := true;   -- implement pulse-width modulation unit (PWM)?
 
      IO_WDT_EN                    : boolean := true;   -- implement watch dog timer (WDT)?
 
      IO_WDT_EN                    : boolean := true;   -- implement watch dog timer (WDT)?
 
      IO_TRNG_EN                   : boolean := false;  -- implement true random number generator (TRNG)?
 
      IO_TRNG_EN                   : boolean := false;  -- implement true random number generator (TRNG)?
 
      IO_CFS_EN                    : boolean := false;  -- implement custom functions subsystem (CFS)?
 
      IO_CFS_EN                    : boolean := false;  -- implement custom functions subsystem (CFS)?
 
      IO_CFS_CONFIG                : std_ulogic_vector(31 downto 0) := x"00000000"; -- custom CFS configuration generic
 
      IO_CFS_CONFIG                : std_ulogic_vector(31 downto 0); -- custom CFS configuration generic
 
      IO_NCO_EN                    : boolean := true    -- implement numerically-controlled oscillator (NCO)?
 
      IO_CFS_IN_SIZE               : positive := 32;    -- size of CFS input conduit in bits
 
 
 
      IO_CFS_OUT_SIZE              : positive := 32;    -- size of CFS output conduit in bits
 
 
 
      IO_NCO_EN                    : boolean := true;   -- implement numerically-controlled oscillator (NCO)?
 
 
 
      IO_NEOLED_EN                 : boolean := true    -- implement NeoPixel-compatible smart LED interface (NEOLED)?
 
    );
 
    );
 
    port (
 
    port (
 
      -- Global control --
 
      -- Global control --
 
      clk_i       : in  std_ulogic := '0'; -- global clock, rising edge
 
      clk_i       : in  std_ulogic := '0'; -- global clock, rising edge
 
      rstn_i      : in  std_ulogic := '0'; -- global reset, low-active, async
 
      rstn_i      : in  std_ulogic := '0'; -- global reset, low-active, async
Line 901... Line 929... 
      twi_sda_io  : inout std_logic; -- twi serial data line
 
      twi_sda_io  : inout std_logic; -- twi serial data line
 
      twi_scl_io  : inout std_logic; -- twi serial clock line
 
      twi_scl_io  : inout std_logic; -- twi serial clock line
 
      -- PWM (available if IO_PWM_EN = true) --
 
      -- PWM (available if IO_PWM_EN = true) --
 
      pwm_o       : out std_ulogic_vector(03 downto 0); -- pwm channels
 
      pwm_o       : out std_ulogic_vector(03 downto 0); -- pwm channels
 
      -- Custom Functions Subsystem IO --
 
      -- Custom Functions Subsystem IO --
 
      cfs_in_i    : in  std_ulogic_vector(31 downto 0) := (others => '0'); -- custom CSF inputs
 
      cfs_in_i    : in  std_ulogic_vector(IO_CFS_IN_SIZE-1  downto 0); -- custom CFS inputs conduit
 
      cfs_out_o   : out std_ulogic_vector(31 downto 0); -- custom CSF outputs
 
      cfs_out_o   : out std_ulogic_vector(IO_CFS_OUT_SIZE-1 downto 0); -- custom CFS outputs conduit
 
      -- NCO output (available if IO_NCO_EN = true) --
 
      -- NCO output (available if IO_NCO_EN = true) --
 
      nco_o       : out std_ulogic_vector(02 downto 0); -- numerically-controlled oscillator channels
 
      nco_o       : out std_ulogic_vector(02 downto 0); -- numerically-controlled oscillator channels
 
 
 
      -- NeoPixel-compatible smart LED interface (available if IO_NEOLED_EN = true) --
 
 
 
      neoled_o    : out std_ulogic; -- async serial data line
 
      -- system time input from external MTIME (available if IO_MTIME_EN = false) --
 
      -- system time input from external MTIME (available if IO_MTIME_EN = false) --
 
      mtime_i     : in  std_ulogic_vector(63 downto 0) := (others => '0'); -- current system time
 
      mtime_i     : in  std_ulogic_vector(63 downto 0) := (others => '0'); -- current system time
 
      -- Interrupts --
 
      -- Interrupts --
 
      soc_firq_i  : in  std_ulogic_vector(5 downto 0) := (others => '0'); -- fast interrupt channels
 
      soc_firq_i  : in  std_ulogic_vector(5 downto 0) := (others => '0'); -- fast interrupt channels
 
      mtime_irq_i : in  std_ulogic := '0'; -- machine timer interrupt, available if IO_MTIME_EN = false
 
      mtime_irq_i : in  std_ulogic := '0'; -- machine timer interrupt, available if IO_MTIME_EN = false
Line 928... Line 958... 
      -- RISC-V CPU Extensions --
 
      -- RISC-V CPU Extensions --
 
      CPU_EXTENSION_RISCV_A        : boolean := false; -- implement atomic extension?
 
      CPU_EXTENSION_RISCV_A        : boolean := false; -- implement atomic extension?
 
      CPU_EXTENSION_RISCV_B        : boolean := false; -- implement bit manipulation extensions?
 
      CPU_EXTENSION_RISCV_B        : boolean := false; -- implement bit manipulation extensions?
 
      CPU_EXTENSION_RISCV_C        : boolean := false; -- implement compressed extension?
 
      CPU_EXTENSION_RISCV_C        : boolean := false; -- implement compressed extension?
 
      CPU_EXTENSION_RISCV_E        : boolean := false; -- implement embedded RF extension?
 
      CPU_EXTENSION_RISCV_E        : boolean := false; -- implement embedded RF extension?
 
 
 
      CPU_EXTENSION_RISCV_F        : boolean := false; -- implement 32-bit floating-point extension?
 
      CPU_EXTENSION_RISCV_M        : boolean := false; -- implement muld/div extension?
 
      CPU_EXTENSION_RISCV_M        : boolean := false; -- implement muld/div extension?
 
      CPU_EXTENSION_RISCV_U        : boolean := false; -- implement user mode extension?
 
      CPU_EXTENSION_RISCV_U        : boolean := false; -- implement user mode extension?
 
      CPU_EXTENSION_RISCV_Zicsr    : boolean := true;  -- implement CSR system?
 
      CPU_EXTENSION_RISCV_Zicsr    : boolean := true;  -- implement CSR system?
 
      CPU_EXTENSION_RISCV_Zifencei : boolean := false; -- implement instruction stream sync.?
 
      CPU_EXTENSION_RISCV_Zifencei : boolean := false; -- implement instruction stream sync.?
 
      -- Extension Options --
 
      -- Extension Options --
Line 996... Line 1027... 
      -- RISC-V CPU Extensions --
 
      -- RISC-V CPU Extensions --
 
      CPU_EXTENSION_RISCV_A        : boolean := false; -- implement atomic extension?
 
      CPU_EXTENSION_RISCV_A        : boolean := false; -- implement atomic extension?
 
      CPU_EXTENSION_RISCV_B        : boolean := false; -- implement bit manipulation extensions?
 
      CPU_EXTENSION_RISCV_B        : boolean := false; -- implement bit manipulation extensions?
 
      CPU_EXTENSION_RISCV_C        : boolean := false; -- implement compressed extension?
 
      CPU_EXTENSION_RISCV_C        : boolean := false; -- implement compressed extension?
 
      CPU_EXTENSION_RISCV_E        : boolean := false; -- implement embedded RF extension?
 
      CPU_EXTENSION_RISCV_E        : boolean := false; -- implement embedded RF extension?
 
 
 
      CPU_EXTENSION_RISCV_F        : boolean := false; -- implement 32-bit floating-point extension?
 
      CPU_EXTENSION_RISCV_M        : boolean := false; -- implement muld/div extension?
 
      CPU_EXTENSION_RISCV_M        : boolean := false; -- implement muld/div extension?
 
      CPU_EXTENSION_RISCV_U        : boolean := false; -- implement user mode extension?
 
      CPU_EXTENSION_RISCV_U        : boolean := false; -- implement user mode extension?
 
      CPU_EXTENSION_RISCV_Zicsr    : boolean := true;  -- implement CSR system?
 
      CPU_EXTENSION_RISCV_Zicsr    : boolean := true;  -- implement CSR system?
 
      CPU_EXTENSION_RISCV_Zifencei : boolean := false; -- implement instruction stream sync.?
 
      CPU_EXTENSION_RISCV_Zifencei : boolean := false; -- implement instruction stream sync.?
 
      -- Physical memory protection (PMP) --
 
      -- Physical memory protection (PMP) --
Line 1025... Line 1057... 
      -- data output --
 
      -- data output --
 
      imm_o         : out std_ulogic_vector(data_width_c-1 downto 0); -- immediate
 
      imm_o         : out std_ulogic_vector(data_width_c-1 downto 0); -- immediate
 
      fetch_pc_o    : out std_ulogic_vector(data_width_c-1 downto 0); -- PC for instruction fetch
 
      fetch_pc_o    : out std_ulogic_vector(data_width_c-1 downto 0); -- PC for instruction fetch
 
      curr_pc_o     : out std_ulogic_vector(data_width_c-1 downto 0); -- current PC (corresponding to current instruction)
 
      curr_pc_o     : out std_ulogic_vector(data_width_c-1 downto 0); -- current PC (corresponding to current instruction)
 
      csr_rdata_o   : out std_ulogic_vector(data_width_c-1 downto 0); -- CSR read data
 
      csr_rdata_o   : out std_ulogic_vector(data_width_c-1 downto 0); -- CSR read data
 
 
 
      -- FPU interface --
 
 
 
      fpu_rm_o      : out std_ulogic_vector(02 downto 0); -- rounding mode
 
 
 
      fpu_flags_i   : in  std_ulogic_vector(04 downto 0); -- exception flags
 
      -- interrupts (risc-v compliant) --
 
      -- interrupts (risc-v compliant) --
 
      msw_irq_i     : in  std_ulogic; -- machine software interrupt
 
      msw_irq_i     : in  std_ulogic; -- machine software interrupt
 
      mext_irq_i    : in  std_ulogic; -- machine external interrupt
 
      mext_irq_i    : in  std_ulogic; -- machine external interrupt
 
      mtime_irq_i   : in  std_ulogic; -- machine timer interrupt
 
      mtime_irq_i   : in  std_ulogic; -- machine timer interrupt
 
      -- fast interrupts (custom) --
 
      -- fast interrupts (custom) --
Line 1137... Line 1172... 
      res_o   : out std_ulogic_vector(data_width_c-1 downto 0); -- operation result
 
      res_o   : out std_ulogic_vector(data_width_c-1 downto 0); -- operation result
 
      valid_o : out std_ulogic -- data output valid
 
      valid_o : out std_ulogic -- data output valid
 
    );
 
    );
 
  end component;
 
  end component;
 
 
 
 
 
 
 
  -- Component: CPU Co-Processor 32-bit FPU ('F' extension) ---------------------------------
 
 
 
  -- -------------------------------------------------------------------------------------------
 
 
 
  component neorv32_cpu_cp_fpu
 
 
 
    port (
 
 
 
      -- global control --
 
 
 
      clk_i     : in  std_ulogic; -- global clock, rising edge
 
 
 
      rstn_i    : in  std_ulogic; -- global reset, low-active, async
 
 
 
      ctrl_i    : in  std_ulogic_vector(ctrl_width_c-1 downto 0); -- main control bus
 
 
 
      start_i   : in  std_ulogic; -- trigger operation
 
 
 
      -- data input --
 
 
 
      frm_i     : in  std_ulogic_vector(2 downto 0); -- rounding mode
 
 
 
      reg_i     : in  std_ulogic_vector(data_width_c-1 downto 0); -- rf source
 
 
 
      mem_i     : in  std_ulogic_vector(data_width_c-1 downto 0); -- memory read-data
 
 
 
      -- result and status --
 
 
 
      fflags_o  : out std_ulogic_vector(4 downto 0); -- exception flags
 
 
 
      mem_o     : out std_ulogic_vector(data_width_c-1 downto 0); -- memory write-data
 
 
 
      res_o     : out std_ulogic_vector(data_width_c-1 downto 0); -- operation result
 
 
 
      valid_o   : out std_ulogic -- data output valid
 
 
 
    );
 
 
 
  end component;
 
 
 
 
 
  -- Component: CPU Bus Interface -----------------------------------------------------------
 
  -- Component: CPU Bus Interface -----------------------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  component neorv32_cpu_bus
 
  component neorv32_cpu_bus
 
    generic (
 
    generic (
 
      CPU_EXTENSION_RISCV_C : boolean := true;  -- implement compressed extension?
 
      CPU_EXTENSION_RISCV_C : boolean := true;  -- implement compressed extension?
Line 1578... Line 1634... 
 
 
 
 
  -- Component: Custom Functions Subsystem (CFS) --------------------------------------------
 
  -- Component: Custom Functions Subsystem (CFS) --------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  component neorv32_cfs
 
  component neorv32_cfs
 
    generic (
 
    generic (
 
      CFS_CONFIG : std_ulogic_vector(31 downto 0) := x"00000000" -- custom CFS configuration generic
 
      CFS_CONFIG   : std_ulogic_vector(31 downto 0); -- custom CFS configuration generic
 
 
 
      CFS_IN_SIZE  : positive := 32;  -- size of CFS input conduit in bits
 
 
 
      CFS_OUT_SIZE : positive := 32   -- size of CFS output conduit in bits
 
    );
 
    );
 
    port (
 
    port (
 
      -- host access --
 
      -- host access --
 
      clk_i       : in  std_ulogic; -- global clock line
 
      clk_i       : in  std_ulogic; -- global clock line
 
      rstn_i      : in  std_ulogic; -- global reset line, low-active, use as async
 
      rstn_i      : in  std_ulogic; -- global reset line, low-active, use as async
Line 1599... Line 1657... 
      sleep_i     : in  std_ulogic; -- set if cpu is in sleep mode
 
      sleep_i     : in  std_ulogic; -- set if cpu is in sleep mode
 
      -- interrupt --
 
      -- interrupt --
 
      irq_o       : out std_ulogic; -- interrupt request
 
      irq_o       : out std_ulogic; -- interrupt request
 
      irq_ack_i   : in  std_ulogic; -- interrupt acknowledge
 
      irq_ack_i   : in  std_ulogic; -- interrupt acknowledge
 
      -- custom io (conduit) --
 
      -- custom io (conduit) --
 
      cfs_in_i    : in  std_ulogic_vector(31 downto 0); -- custom inputs
 
      cfs_in_i    : in  std_ulogic_vector(CFS_IN_SIZE-1 downto 0);  -- custom inputs
 
      cfs_out_o   : out std_ulogic_vector(31 downto 0)  -- custom outputs
 
      cfs_out_o   : out std_ulogic_vector(CFS_OUT_SIZE-1 downto 0)  -- custom outputs
 
    );
 
    );
 
  end component;
 
  end component;
 
 
 
 
 
  -- Component: Numerically-Controlled Oscillator (NCO) -------------------------------------
 
  -- Component: Numerically-Controlled Oscillator (NCO) -------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
Line 1624... Line 1682... 
      -- NCO output --
 
      -- NCO output --
 
      nco_o       : out std_ulogic_vector(02 downto 0)
 
      nco_o       : out std_ulogic_vector(02 downto 0)
 
    );
 
    );
 
  end component;
 
  end component;
 
 
 
 
 
 
 
  -- Component: Smart LED (WS2811/WS2812) Interface (NEOLED) --------------------------------
 
 
 
  -- -------------------------------------------------------------------------------------------
 
 
 
  component neorv32_neoled
 
 
 
    port (
 
 
 
      -- host access --
 
 
 
      clk_i       : in  std_ulogic; -- global clock line
 
 
 
      addr_i      : in  std_ulogic_vector(31 downto 0); -- address
 
 
 
      rden_i      : in  std_ulogic; -- read enable
 
 
 
      wren_i      : in  std_ulogic; -- write enable
 
 
 
      data_i      : in  std_ulogic_vector(31 downto 0); -- data in
 
 
 
      data_o      : out std_ulogic_vector(31 downto 0); -- data out
 
 
 
      ack_o       : out std_ulogic; -- transfer acknowledge
 
 
 
      -- clock generator --
 
 
 
      clkgen_en_o : out std_ulogic; -- enable clock generator
 
 
 
      clkgen_i    : in  std_ulogic_vector(07 downto 0);
 
 
 
      -- interrupt --
 
 
 
      irq_o       : out std_ulogic; -- interrupt request
 
 
 
      -- NEOLED output --
 
 
 
      neoled_o    : out std_ulogic -- serial async data line
 
 
 
    );
 
 
 
  end component;
 
 
 
 
 
  -- Component: System Configuration Information Memory (SYSINFO) ---------------------------
 
  -- Component: System Configuration Information Memory (SYSINFO) ---------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  -- -------------------------------------------------------------------------------------------
 
  component neorv32_sysinfo
 
  component neorv32_sysinfo
 
    generic (
 
    generic (
 
      -- General --
 
      -- General --
Line 1657... Line 1737... 
      IO_TWI_EN            : boolean := true;   -- implement two-wire interface (TWI)?
 
      IO_TWI_EN            : boolean := true;   -- implement two-wire interface (TWI)?
 
      IO_PWM_EN            : boolean := true;   -- implement pulse-width modulation unit (PWM)?
 
      IO_PWM_EN            : boolean := true;   -- implement pulse-width modulation unit (PWM)?
 
      IO_WDT_EN            : boolean := true;   -- implement watch dog timer (WDT)?
 
      IO_WDT_EN            : boolean := true;   -- implement watch dog timer (WDT)?
 
      IO_TRNG_EN           : boolean := true;   -- implement true random number generator (TRNG)?
 
      IO_TRNG_EN           : boolean := true;   -- implement true random number generator (TRNG)?
 
      IO_CFS_EN            : boolean := true;   -- implement custom functions subsystem (CFS)?
 
      IO_CFS_EN            : boolean := true;   -- implement custom functions subsystem (CFS)?
 
      IO_NCO_EN            : boolean := true    -- implement numerically-controlled oscillator (NCO)?
 
      IO_NCO_EN            : boolean := true;   -- implement numerically-controlled oscillator (NCO)?
 
 
 
      IO_NEOLED_EN         : boolean := true    -- implement NeoPixel-compatible smart LED interface (NEOLED)?
 
    );
 
    );
 
    port (
 
    port (
 
      -- host access --
 
      -- host access --
 
      clk_i  : in  std_ulogic; -- global clock line
 
      clk_i  : in  std_ulogic; -- global clock line
 
      addr_i : in  std_ulogic_vector(31 downto 0); -- address
 
      addr_i : in  std_ulogic_vector(31 downto 0); -- address

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.