| Line 62... |
Line 62... |
constant jtag_tap_idcode_manid_c : std_ulogic_vector(10 downto 0) := "00000000000"; -- manufacturer id
|
constant jtag_tap_idcode_manid_c : std_ulogic_vector(10 downto 0) := "00000000000"; -- manufacturer id
|
|
|
-- 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"01050900"; -- no touchy!
|
constant hw_version_c : std_ulogic_vector(31 downto 0) := x"01060000"; -- no touchy!
|
constant archid_c : natural := 19; -- official NEORV32 architecture ID - hands off!
|
constant archid_c : natural := 19; -- official NEORV32 architecture ID - hands off!
|
|
|
-- External Interface Types ---------------------------------------------------------------
|
-- External Interface Types ---------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
type sdata_8x32_t is array (0 to 7) of std_ulogic_vector(31 downto 0);
|
type sdata_8x32_t is array (0 to 7) of std_ulogic_vector(31 downto 0);
|
| Line 100... |
Line 100... |
function bit_rev_f(input : std_ulogic_vector) return std_ulogic_vector;
|
function bit_rev_f(input : std_ulogic_vector) return std_ulogic_vector;
|
function is_power_of_two_f(input : natural) return boolean;
|
function is_power_of_two_f(input : natural) return boolean;
|
function bswap32_f(input : std_ulogic_vector) return std_ulogic_vector;
|
function bswap32_f(input : std_ulogic_vector) return std_ulogic_vector;
|
function char_to_lower_f(ch : character) return character;
|
function char_to_lower_f(ch : character) return character;
|
function str_equal_f(str0 : string; str1 : string) return boolean;
|
function str_equal_f(str0 : string; str1 : string) return boolean;
|
|
function popcount_f(input : std_ulogic_vector) return natural;
|
|
function leading_zeros_f(input : std_ulogic_vector) return natural;
|
impure function mem32_init_f(init : mem32_t; depth : natural) return mem32_t;
|
impure function mem32_init_f(init : mem32_t; depth : natural) return mem32_t;
|
|
|
-- Internal (auto-generated) Configurations -----------------------------------------------
|
-- Internal (auto-generated) Configurations -----------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
constant def_rst_val_c : std_ulogic := cond_sel_stdulogic_f(dedicated_reset_c, '0', '-');
|
constant def_rst_val_c : std_ulogic := cond_sel_stdulogic_f(dedicated_reset_c, '0', '-');
|
| Line 187... |
Line 189... |
constant pwm_duty11_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"fffffeb0";
|
constant pwm_duty11_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"fffffeb0";
|
constant pwm_duty12_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"fffffeb4";
|
constant pwm_duty12_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"fffffeb4";
|
constant pwm_duty13_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"fffffeb8";
|
constant pwm_duty13_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"fffffeb8";
|
constant pwm_duty14_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"fffffebc";
|
constant pwm_duty14_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"fffffebc";
|
|
|
-- Stream link interface (SLINK) --
|
-- Stream Link Interface (SLINK) --
|
constant slink_base_c : std_ulogic_vector(data_width_c-1 downto 0) := x"fffffec0"; -- base address
|
constant slink_base_c : std_ulogic_vector(data_width_c-1 downto 0) := x"fffffec0"; -- base address
|
constant slink_size_c : natural := 16*4; -- module's address space size in bytes
|
constant slink_size_c : natural := 16*4; -- module's address space size in bytes
|
|
|
-- reserved --
|
-- reserved --
|
--constant reserved_base_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffff00"; -- base address
|
--constant reserved_base_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffff00"; -- base address
|
--constant reserved_size_c : natural := 32*4; -- module's address space size in bytes
|
--constant reserved_size_c : natural := 16*4; -- module's address space size in bytes
|
|
|
|
-- reserved --
|
|
--constant reserved_base_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffff40"; -- base address
|
|
--constant reserved_size_c : natural := 8*4; -- module's address space size in bytes
|
|
|
|
-- reserved --
|
|
--constant reserved_base_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffff60"; -- base address
|
|
--constant reserved_size_c : natural := 4*4; -- module's address space size in bytes
|
|
|
|
-- reserved --
|
|
--constant reserved_base_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffff70"; -- base address
|
|
--constant reserved_size_c : natural := 2*4; -- module's address space size in bytes
|
|
|
|
-- reserved --
|
|
--constant reserved_base_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffff78"; -- base address
|
|
--constant reserved_size_c : natural := 2*4; -- module's address space size in bytes
|
|
|
-- External Interrupt Controller (XIRQ) --
|
-- External Interrupt Controller (XIRQ) --
|
constant xirq_base_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffff80"; -- base address
|
constant xirq_base_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffff80"; -- base address
|
constant xirq_size_c : natural := 4*4; -- module's address space size in bytes
|
constant xirq_size_c : natural := 4*4; -- module's address space size in bytes
|
constant xirq_enable_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffff80";
|
constant xirq_enable_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffff80";
|
| Line 239... |
Line 257... |
-- Watch Dog Timer (WDT) --
|
-- Watch Dog Timer (WDT) --
|
constant wdt_base_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffffbc"; -- base address
|
constant wdt_base_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffffbc"; -- base address
|
constant wdt_size_c : natural := 1*4; -- module's address space size in bytes
|
constant wdt_size_c : natural := 1*4; -- module's address space size in bytes
|
constant wdt_ctrl_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffffbc";
|
constant wdt_ctrl_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffffbc";
|
|
|
-- reserved --
|
-- General Purpose Input/Output Controller (GPIO) --
|
constant gpio_base_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffffc0"; -- base address
|
constant gpio_base_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffffc0"; -- base address
|
constant gpio_size_c : natural := 4*4; -- module's address space size in bytes
|
constant gpio_size_c : natural := 4*4; -- module's address space size in bytes
|
constant gpio_in_lo_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffffc0";
|
constant gpio_in_lo_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffffc0";
|
constant gpio_in_hi_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffffc4";
|
constant gpio_in_hi_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffffc4";
|
constant gpio_out_lo_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffffc8";
|
constant gpio_out_lo_addr_c : std_ulogic_vector(data_width_c-1 downto 0) := x"ffffffc8";
|
| Line 499... |
Line 517... |
constant csr_class_float_c : std_ulogic_vector(07 downto 0) := x"00"; -- floating point
|
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_fflags_c : std_ulogic_vector(11 downto 0) := x"001";
|
constant csr_frm_c : std_ulogic_vector(11 downto 0) := x"002";
|
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_fcsr_c : std_ulogic_vector(11 downto 0) := x"003";
|
-- machine trap setup --
|
-- machine trap setup --
|
constant csr_class_setup_c : std_ulogic_vector(07 downto 0) := x"30"; -- trap setup
|
constant csr_class_setup_c : std_ulogic_vector(08 downto 0) := x"30" & '0'; -- 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";
|
| Line 540... |
Line 558... |
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";
|
-- machine trap handling --
|
-- machine trap handling --
|
constant csr_class_trap_c : std_ulogic_vector(07 downto 0) := x"34"; -- machine trap handling
|
constant csr_class_trap_c : std_ulogic_vector(08 downto 0) := x"34" & '0'; -- 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";
|
| Line 706... |
Line 724... |
-- <<< standard read-only CSRs >>> --
|
-- <<< standard read-only CSRs >>> --
|
-- user counters/timers --
|
-- user counters/timers --
|
constant csr_cycle_c : std_ulogic_vector(11 downto 0) := x"c00";
|
constant csr_cycle_c : std_ulogic_vector(11 downto 0) := x"c00";
|
constant csr_time_c : std_ulogic_vector(11 downto 0) := x"c01";
|
constant csr_time_c : std_ulogic_vector(11 downto 0) := x"c01";
|
constant csr_instret_c : std_ulogic_vector(11 downto 0) := x"c02";
|
constant csr_instret_c : std_ulogic_vector(11 downto 0) := x"c02";
|
--
|
|
constant csr_cycleh_c : std_ulogic_vector(11 downto 0) := x"c80";
|
constant csr_cycleh_c : std_ulogic_vector(11 downto 0) := x"c80";
|
constant csr_timeh_c : std_ulogic_vector(11 downto 0) := x"c81";
|
constant csr_timeh_c : std_ulogic_vector(11 downto 0) := x"c81";
|
constant csr_instreth_c : std_ulogic_vector(11 downto 0) := x"c82";
|
constant csr_instreth_c : std_ulogic_vector(11 downto 0) := x"c82";
|
-- machine information registers --
|
-- machine information registers --
|
constant csr_mvendorid_c : std_ulogic_vector(11 downto 0) := x"f11";
|
constant csr_mvendorid_c : std_ulogic_vector(11 downto 0) := x"f11";
|
constant csr_marchid_c : std_ulogic_vector(11 downto 0) := x"f12";
|
constant csr_marchid_c : std_ulogic_vector(11 downto 0) := x"f12";
|
constant csr_mimpid_c : std_ulogic_vector(11 downto 0) := x"f13";
|
constant csr_mimpid_c : std_ulogic_vector(11 downto 0) := x"f13";
|
constant csr_mhartid_c : std_ulogic_vector(11 downto 0) := x"f14";
|
constant csr_mhartid_c : std_ulogic_vector(11 downto 0) := x"f14";
|
constant csr_mconfigptr_c : std_ulogic_vector(11 downto 0) := x"f15";
|
constant csr_mconfigptr_c : std_ulogic_vector(11 downto 0) := x"f15";
|
-- <<< custom (NEORV32-specific) read-only CSRs >>> --
|
|
constant csr_mzext_c : std_ulogic_vector(11 downto 0) := x"fc0";
|
|
|
|
-- Co-Processor IDs -----------------------------------------------------------------------
|
-- Co-Processor IDs -----------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
constant cp_sel_shifter_c : std_ulogic_vector(1 downto 0) := "00"; -- shift operation
|
constant cp_sel_shifter_c : std_ulogic_vector(1 downto 0) := "00"; -- shift operations (base ISA)
|
constant cp_sel_muldiv_c : std_ulogic_vector(1 downto 0) := "01"; -- multiplication/division operations ('M' extension)
|
constant cp_sel_muldiv_c : std_ulogic_vector(1 downto 0) := "01"; -- multiplication/division operations ('M' extensions)
|
--constant cp_sel_bitmanip_c : std_ulogic_vector(1 downto 0) := "10"; -- bit manipulation ('B' extension)
|
constant cp_sel_bitmanip_c : std_ulogic_vector(1 downto 0) := "10"; -- bit manipulation ('B' extensions)
|
constant cp_sel_fpu_c : std_ulogic_vector(1 downto 0) := "11"; -- floating-point unit ('Zfinx' extension)
|
constant cp_sel_fpu_c : std_ulogic_vector(1 downto 0) := "11"; -- floating-point unit ('Zfinx' extension)
|
|
|
-- ALU Function Codes ---------------------------------------------------------------------
|
-- ALU Function Codes ---------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
-- arithmetic core --
|
-- arithmetic core --
|
| Line 870... |
Line 885... |
-- -------------------------------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
component neorv32_top
|
component neorv32_top
|
generic (
|
generic (
|
-- General --
|
-- General --
|
CLOCK_FREQUENCY : natural; -- clock frequency of clk_i in Hz
|
CLOCK_FREQUENCY : natural; -- clock frequency of clk_i in Hz
|
USER_CODE : std_ulogic_vector(31 downto 0) := x"00000000"; -- custom user code
|
|
HW_THREAD_ID : natural := 0; -- hardware thread id (32-bit)
|
HW_THREAD_ID : natural := 0; -- hardware thread id (32-bit)
|
INT_BOOTLOADER_EN : boolean := false; -- boot configuration: true = boot explicit bootloader; false = boot from int/ext (I)MEM
|
INT_BOOTLOADER_EN : boolean := false; -- boot configuration: true = boot explicit bootloader; false = boot from int/ext (I)MEM
|
-- On-Chip Debugger (OCD) --
|
-- On-Chip Debugger (OCD) --
|
ON_CHIP_DEBUGGER_EN : boolean := false; -- implement on-chip debugger
|
ON_CHIP_DEBUGGER_EN : boolean := false; -- implement on-chip debugger
|
-- 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_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_M : boolean := false; -- implement mul/div extension?
|
CPU_EXTENSION_RISCV_M : boolean := false; -- implement mul/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_Zbb : boolean := false; -- implement basic bit-manipulation sub-extension?
|
CPU_EXTENSION_RISCV_Zfinx : boolean := false; -- implement 32-bit floating-point extension (using INT regs!)
|
CPU_EXTENSION_RISCV_Zfinx : boolean := false; -- implement 32-bit floating-point extension (using INT regs!)
|
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.?
|
CPU_EXTENSION_RISCV_Zmmul : boolean := false; -- implement multiply-only M sub-extension?
|
CPU_EXTENSION_RISCV_Zmmul : boolean := false; -- implement multiply-only M sub-extension?
|
-- Extension Options --
|
-- Extension Options --
|
| Line 1027... |
Line 1042... |
CPU_EXTENSION_RISCV_A : boolean; -- implement atomic extension?
|
CPU_EXTENSION_RISCV_A : boolean; -- implement atomic extension?
|
CPU_EXTENSION_RISCV_C : boolean; -- implement compressed extension?
|
CPU_EXTENSION_RISCV_C : boolean; -- implement compressed extension?
|
CPU_EXTENSION_RISCV_E : boolean; -- implement embedded RF extension?
|
CPU_EXTENSION_RISCV_E : boolean; -- implement embedded RF extension?
|
CPU_EXTENSION_RISCV_M : boolean; -- implement mul/div extension?
|
CPU_EXTENSION_RISCV_M : boolean; -- implement mul/div extension?
|
CPU_EXTENSION_RISCV_U : boolean; -- implement user mode extension?
|
CPU_EXTENSION_RISCV_U : boolean; -- implement user mode extension?
|
|
CPU_EXTENSION_RISCV_Zbb : boolean; -- implement basic bit-manipulation sub-extension?
|
CPU_EXTENSION_RISCV_Zfinx : boolean; -- implement 32-bit floating-point extension (using INT reg!)
|
CPU_EXTENSION_RISCV_Zfinx : boolean; -- implement 32-bit floating-point extension (using INT reg!)
|
CPU_EXTENSION_RISCV_Zicsr : boolean; -- implement CSR system?
|
CPU_EXTENSION_RISCV_Zicsr : boolean; -- implement CSR system?
|
CPU_EXTENSION_RISCV_Zifencei : boolean; -- implement instruction stream sync.?
|
CPU_EXTENSION_RISCV_Zifencei : boolean; -- implement instruction stream sync.?
|
CPU_EXTENSION_RISCV_Zmmul : boolean; -- implement multiply-only M sub-extension?
|
CPU_EXTENSION_RISCV_Zmmul : boolean; -- implement multiply-only M sub-extension?
|
CPU_EXTENSION_RISCV_DEBUG : boolean; -- implement CPU debug mode?
|
CPU_EXTENSION_RISCV_DEBUG : boolean; -- implement CPU debug mode?
|
| Line 1102... |
Line 1118... |
CPU_EXTENSION_RISCV_A : boolean; -- implement atomic extension?
|
CPU_EXTENSION_RISCV_A : boolean; -- implement atomic extension?
|
CPU_EXTENSION_RISCV_C : boolean; -- implement compressed extension?
|
CPU_EXTENSION_RISCV_C : boolean; -- implement compressed extension?
|
CPU_EXTENSION_RISCV_E : boolean; -- implement embedded RF extension?
|
CPU_EXTENSION_RISCV_E : boolean; -- implement embedded RF extension?
|
CPU_EXTENSION_RISCV_M : boolean; -- implement mul/div extension?
|
CPU_EXTENSION_RISCV_M : boolean; -- implement mul/div extension?
|
CPU_EXTENSION_RISCV_U : boolean; -- implement user mode extension?
|
CPU_EXTENSION_RISCV_U : boolean; -- implement user mode extension?
|
|
CPU_EXTENSION_RISCV_Zbb : boolean; -- implement basic bit-manipulation sub-extension?
|
CPU_EXTENSION_RISCV_Zfinx : boolean; -- implement 32-bit floating-point extension (using INT reg!)
|
CPU_EXTENSION_RISCV_Zfinx : boolean; -- implement 32-bit floating-point extension (using INT reg!)
|
CPU_EXTENSION_RISCV_Zicsr : boolean; -- implement CSR system?
|
CPU_EXTENSION_RISCV_Zicsr : boolean; -- implement CSR system?
|
CPU_EXTENSION_RISCV_Zifencei : boolean; -- implement instruction stream sync.?
|
CPU_EXTENSION_RISCV_Zifencei : boolean; -- implement instruction stream sync.?
|
CPU_EXTENSION_RISCV_Zmmul : boolean; -- implement multiply-only M sub-extension?
|
CPU_EXTENSION_RISCV_Zmmul : boolean; -- implement multiply-only M sub-extension?
|
CPU_EXTENSION_RISCV_DEBUG : boolean; -- implement CPU debug mode?
|
CPU_EXTENSION_RISCV_DEBUG : boolean; -- implement CPU debug mode?
|
| Line 1191... |
Line 1208... |
-- -------------------------------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
component neorv32_cpu_alu
|
component neorv32_cpu_alu
|
generic (
|
generic (
|
-- RISC-V CPU Extensions --
|
-- RISC-V CPU Extensions --
|
CPU_EXTENSION_RISCV_M : boolean; -- implement mul/div extension?
|
CPU_EXTENSION_RISCV_M : boolean; -- implement mul/div extension?
|
|
CPU_EXTENSION_RISCV_Zbb : boolean; -- implement basic bit-manipulation sub-extension?
|
CPU_EXTENSION_RISCV_Zmmul : boolean; -- implement multiply-only M sub-extension?
|
CPU_EXTENSION_RISCV_Zmmul : boolean; -- implement multiply-only M sub-extension?
|
CPU_EXTENSION_RISCV_Zfinx : boolean; -- implement 32-bit floating-point extension (using INT reg!)
|
CPU_EXTENSION_RISCV_Zfinx : boolean; -- implement 32-bit floating-point extension (using INT reg!)
|
-- Extension Options --
|
-- Extension Options --
|
FAST_MUL_EN : boolean; -- use DSPs for M extension's multiplier
|
FAST_MUL_EN : boolean; -- use DSPs for M extension's multiplier
|
FAST_SHIFT_EN : boolean -- use barrel shifter for shift operations
|
FAST_SHIFT_EN : boolean -- use barrel shifter for shift operations
|
| Line 1262... |
Line 1280... |
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 Bit-Manipulation Unit ('B' extension) ----------------------
|
|
-- -------------------------------------------------------------------------------------------
|
|
component neorv32_cpu_cp_bitmanip is
|
|
generic (
|
|
FAST_SHIFT_EN : boolean -- use barrel shifter for shift operations
|
|
);
|
|
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 --
|
|
cmp_i : in std_ulogic_vector(1 downto 0); -- comparator status
|
|
rs1_i : in std_ulogic_vector(data_width_c-1 downto 0); -- rf source 1
|
|
rs2_i : in std_ulogic_vector(data_width_c-1 downto 0); -- rf source 2
|
|
-- result and status --
|
|
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 Co-Processor 32-bit FPU ('Zfinx' extension) -----------------------------
|
-- Component: CPU Co-Processor 32-bit FPU ('Zfinx' extension) -----------------------------
|
-- -------------------------------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
component neorv32_cpu_cp_fpu
|
component neorv32_cpu_cp_fpu
|
port (
|
port (
|
-- global control --
|
-- global control --
|
| Line 1856... |
Line 1896... |
component neorv32_sysinfo
|
component neorv32_sysinfo
|
generic (
|
generic (
|
-- General --
|
-- General --
|
CLOCK_FREQUENCY : natural; -- clock frequency of clk_i in Hz
|
CLOCK_FREQUENCY : natural; -- clock frequency of clk_i in Hz
|
INT_BOOTLOADER_EN : boolean; -- boot configuration: true = boot explicit bootloader; false = boot from int/ext (I)MEM
|
INT_BOOTLOADER_EN : boolean; -- boot configuration: true = boot explicit bootloader; false = boot from int/ext (I)MEM
|
USER_CODE : std_ulogic_vector(31 downto 0) := x"00000000"; -- custom user code
|
-- RISC-V CPU Extensions --
|
|
CPU_EXTENSION_RISCV_Zbb : boolean; -- implement basic bit-manipulation sub-extension?
|
|
CPU_EXTENSION_RISCV_Zfinx : boolean; -- implement 32-bit floating-point extension (using INT reg!)
|
|
CPU_EXTENSION_RISCV_Zicsr : boolean; -- implement CSR system?
|
|
CPU_EXTENSION_RISCV_Zifencei : boolean; -- implement instruction stream sync.?
|
|
CPU_EXTENSION_RISCV_Zmmul : boolean; -- implement multiply-only M sub-extension?
|
|
CPU_EXTENSION_RISCV_DEBUG : boolean; -- implement CPU debug mode?
|
|
-- Extension Options --
|
|
FAST_MUL_EN : boolean; -- use DSPs for M extension's multiplier
|
|
FAST_SHIFT_EN : boolean; -- use barrel shifter for shift operations
|
|
CPU_CNT_WIDTH : natural; -- total width of CPU cycle and instret counters (0..64)
|
|
-- Physical memory protection (PMP) --
|
|
PMP_NUM_REGIONS : natural; -- number of regions (0..64)
|
|
-- Hardware Performance Monitors (HPM) --
|
|
HPM_NUM_CNTS : natural; -- number of implemented HPM counters (0..29)
|
-- Internal Instruction memory --
|
-- Internal Instruction memory --
|
MEM_INT_IMEM_EN : boolean; -- implement processor-internal instruction memory
|
MEM_INT_IMEM_EN : boolean; -- implement processor-internal instruction memory
|
MEM_INT_IMEM_SIZE : natural; -- size of processor-internal instruction memory in bytes
|
MEM_INT_IMEM_SIZE : natural; -- size of processor-internal instruction memory in bytes
|
-- Internal Data memory --
|
-- Internal Data memory --
|
MEM_INT_DMEM_EN : boolean; -- implement processor-internal data memory
|
MEM_INT_DMEM_EN : boolean; -- implement processor-internal data memory
|
| Line 2263... |
Line 2317... |
return false;
|
return false;
|
end if;
|
end if;
|
end if;
|
end if;
|
end function str_equal_f;
|
end function str_equal_f;
|
|
|
|
-- Function: Population count (number of set bits) ----------------------------------------
|
|
-- -------------------------------------------------------------------------------------------
|
|
function popcount_f(input : std_ulogic_vector) return natural is
|
|
variable cnt_v : natural range 0 to input'length;
|
|
begin
|
|
cnt_v := 0;
|
|
for i in input'length-1 downto 0 loop
|
|
if (input(i) = '1') then
|
|
cnt_v := cnt_v + 1;
|
|
end if;
|
|
end loop; -- i
|
|
return cnt_v;
|
|
end function popcount_f;
|
|
|
|
-- Function: Count leading zeros ----------------------------------------------------------
|
|
-- -------------------------------------------------------------------------------------------
|
|
function leading_zeros_f(input : std_ulogic_vector) return natural is
|
|
variable cnt_v : natural range 0 to input'length;
|
|
begin
|
|
cnt_v := 0;
|
|
for i in input'length-1 downto 0 loop
|
|
if (input(i) = '0') then
|
|
cnt_v := cnt_v + 1;
|
|
else
|
|
exit;
|
|
end if;
|
|
end loop; -- i
|
|
return cnt_v;
|
|
end function leading_zeros_f;
|
|
|
-- Function: Initialize mem32_t array from another mem32_t array --------------------------
|
-- Function: Initialize mem32_t array from another mem32_t array --------------------------
|
-- -------------------------------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
-- impure function: returns NOT the same result every time it is evaluated with the same arguments since the source file might have changed
|
-- impure function: returns NOT the same result every time it is evaluated with the same arguments since the source file might have changed
|
impure function mem32_init_f(init : mem32_t; depth : natural) return mem32_t is
|
impure function mem32_init_f(init : mem32_t; depth : natural) return mem32_t is
|
variable mem_v : mem32_t(0 to depth-1);
|
variable mem_v : mem32_t(0 to depth-1);
|
