| Line 53... |
Line 53... |
constant ipb_entries_c : natural := 2; -- entries in CPU instruction prefetch buffer, has to be a power of 2, default=2
|
constant ipb_entries_c : natural := 2; -- entries in CPU instruction prefetch buffer, has to be a power of 2, default=2
|
|
|
-- Architecture Constants (do not modify!)= -----------------------------------------------
|
-- Architecture Constants (do not modify!)= -----------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
constant data_width_c : natural := 32; -- data width - do not change!
|
constant data_width_c : natural := 32; -- data width - do not change!
|
constant hw_version_c : std_ulogic_vector(31 downto 0) := x"01040908"; -- no touchy!
|
constant hw_version_c : std_ulogic_vector(31 downto 0) := x"01050000"; -- 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 218... |
Line 218... |
constant ctrl_cp_id_lsb_c : natural := 43; -- cp select ID lsb
|
constant ctrl_cp_id_lsb_c : natural := 43; -- cp select ID lsb
|
constant ctrl_cp_id_msb_c : natural := 44; -- cp select ID msb
|
constant ctrl_cp_id_msb_c : natural := 44; -- cp select ID msb
|
-- current privilege level --
|
-- current privilege level --
|
constant ctrl_priv_lvl_lsb_c : natural := 45; -- privilege level lsb
|
constant ctrl_priv_lvl_lsb_c : natural := 45; -- privilege level lsb
|
constant ctrl_priv_lvl_msb_c : natural := 46; -- privilege level msb
|
constant ctrl_priv_lvl_msb_c : natural := 46; -- privilege level msb
|
-- instruction's control blocks --
|
-- 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 := 47; -- funct3 bit 0
|
constant ctrl_ir_funct3_1_c : natural := 48; -- funct3 bit 1
|
constant ctrl_ir_funct3_1_c : natural := 48; -- funct3 bit 1
|
constant ctrl_ir_funct3_2_c : natural := 49; -- funct3 bit 2
|
constant ctrl_ir_funct3_2_c : natural := 49; -- funct3 bit 2
|
constant ctrl_ir_funct12_0_c : natural := 50; -- funct12 bit 0
|
constant ctrl_ir_funct12_0_c : natural := 50; -- funct12 bit 0
|
constant ctrl_ir_funct12_1_c : natural := 51; -- funct12 bit 1
|
constant ctrl_ir_funct12_1_c : natural := 51; -- funct12 bit 1
|
| Line 234... |
Line 234... |
constant ctrl_ir_funct12_7_c : natural := 57; -- funct12 bit 7
|
constant ctrl_ir_funct12_7_c : natural := 57; -- funct12 bit 7
|
constant ctrl_ir_funct12_8_c : natural := 58; -- funct12 bit 8
|
constant ctrl_ir_funct12_8_c : natural := 58; -- funct12 bit 8
|
constant ctrl_ir_funct12_9_c : natural := 59; -- funct12 bit 9
|
constant ctrl_ir_funct12_9_c : natural := 59; -- funct12 bit 9
|
constant ctrl_ir_funct12_10_c : natural := 60; -- funct12 bit 10
|
constant ctrl_ir_funct12_10_c : natural := 60; -- funct12 bit 10
|
constant ctrl_ir_funct12_11_c : natural := 61; -- funct12 bit 11
|
constant ctrl_ir_funct12_11_c : natural := 61; -- funct12 bit 11
|
|
constant ctrl_ir_opcode7_0_c : natural := 62; -- opcode7 bit 0
|
|
constant ctrl_ir_opcode7_1_c : natural := 63; -- opcode7 bit 1
|
|
constant ctrl_ir_opcode7_2_c : natural := 64; -- opcode7 bit 2
|
|
constant ctrl_ir_opcode7_3_c : natural := 65; -- opcode7 bit 3
|
|
constant ctrl_ir_opcode7_4_c : natural := 66; -- opcode7 bit 4
|
|
constant ctrl_ir_opcode7_5_c : natural := 67; -- opcode7 bit 5
|
|
constant ctrl_ir_opcode7_6_c : natural := 68; -- opcode7 bit 6
|
-- control bus size --
|
-- control bus size --
|
constant ctrl_width_c : natural := 62; -- control bus size
|
constant ctrl_width_c : natural := 69; -- control bus size
|
|
|
-- ALU Comparator Bus ---------------------------------------------------------------------
|
-- ALU Comparator Bus ---------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
constant alu_cmp_equal_c : natural := 0;
|
constant alu_cmp_equal_c : natural := 0;
|
constant alu_cmp_less_c : natural := 1; -- for signed and unsigned comparisons
|
constant alu_cmp_less_c : natural := 1; -- for signed and unsigned comparisons
|
| Line 613... |
Line 620... |
constant csr_mhartid_c : std_ulogic_vector(11 downto 0) := x"f14";
|
constant csr_mhartid_c : std_ulogic_vector(11 downto 0) := x"f14";
|
|
|
-- custom read-only CSRs --
|
-- custom read-only CSRs --
|
constant csr_mzext_c : std_ulogic_vector(11 downto 0) := x"fc0";
|
constant csr_mzext_c : std_ulogic_vector(11 downto 0) := x"fc0";
|
|
|
-- Co-Processor Operations ----------------------------------------------------------------
|
-- Co-Processor IDs -----------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
-- cp ids --
|
constant cp_sel_muldiv_c : std_ulogic_vector(1 downto 0) := "00"; -- multiplication/division operations ('M' extension)
|
constant cp_sel_muldiv_c : std_ulogic_vector(1 downto 0) := "00"; -- MULDIV
|
constant cp_sel_atomic_c : std_ulogic_vector(1 downto 0) := "01"; -- atomic operations; success/failure evaluation ('A' extension)
|
constant cp_sel_atomic_c : std_ulogic_vector(1 downto 0) := "01"; -- atomic operations success/failure evaluation
|
constant cp_sel_bitmanip_c : std_ulogic_vector(1 downto 0) := "10"; -- bit manipulation ('B' extension)
|
--constant cp_sel_reserv_c : std_ulogic_vector(1 downto 0) := "10"; -- reserved
|
--constant cp_sel_float32_c : std_ulogic_vector(1 downto 0) := "11"; -- reserved -- single-precision floating point operations ('F' extension)
|
--constant cp_sel_reserv_c : std_ulogic_vector(1 downto 0) := "11"; -- reserved
|
|
-- muldiv cp --
|
|
constant cp_op_mul_c : std_ulogic_vector(2 downto 0) := "000"; -- mul
|
|
constant cp_op_mulh_c : std_ulogic_vector(2 downto 0) := "001"; -- mulh
|
|
constant cp_op_mulhsu_c : std_ulogic_vector(2 downto 0) := "010"; -- mulhsu
|
|
constant cp_op_mulhu_c : std_ulogic_vector(2 downto 0) := "011"; -- mulhu
|
|
constant cp_op_div_c : std_ulogic_vector(2 downto 0) := "100"; -- div
|
|
constant cp_op_divu_c : std_ulogic_vector(2 downto 0) := "101"; -- divu
|
|
constant cp_op_rem_c : std_ulogic_vector(2 downto 0) := "110"; -- rem
|
|
constant cp_op_remu_c : std_ulogic_vector(2 downto 0) := "111"; -- remu
|
|
|
|
-- 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 737... |
Line 734... |
-- -------------------------------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
component neorv32_top
|
component neorv32_top
|
generic (
|
generic (
|
-- General --
|
-- General --
|
CLOCK_FREQUENCY : natural := 0; -- clock frequency of clk_i in Hz
|
CLOCK_FREQUENCY : natural := 0; -- clock frequency of clk_i in Hz
|
BOOTLOADER_USE : boolean := true; -- implement processor-internal bootloader?
|
BOOTLOADER_EN : boolean := true; -- implement processor-internal bootloader?
|
USER_CODE : std_ulogic_vector(31 downto 0) := x"00000000"; -- custom user code
|
USER_CODE : std_ulogic_vector(31 downto 0) := x"00000000"; -- custom user code
|
HW_THREAD_ID : std_ulogic_vector(31 downto 0) := (others => '0'); -- hardware thread id (hartid)
|
HW_THREAD_ID : std_ulogic_vector(31 downto 0) := (others => '0'); -- hardware thread id (hartid)
|
-- 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_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 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?
|
| Line 757... |
Line 755... |
PMP_NUM_REGIONS : natural := 0; -- number of regions (0..64)
|
PMP_NUM_REGIONS : natural := 0; -- number of regions (0..64)
|
PMP_MIN_GRANULARITY : natural := 64*1024; -- minimal region granularity in bytes, has to be a power of 2, min 8 bytes
|
PMP_MIN_GRANULARITY : natural := 64*1024; -- minimal region granularity in bytes, has to be a power of 2, min 8 bytes
|
-- Hardware Performance Monitors (HPM) --
|
-- Hardware Performance Monitors (HPM) --
|
HPM_NUM_CNTS : natural := 0; -- number of inmplemnted HPM counters (0..29)
|
HPM_NUM_CNTS : natural := 0; -- number of inmplemnted HPM counters (0..29)
|
-- Internal Instruction memory --
|
-- Internal Instruction memory --
|
MEM_INT_IMEM_USE : boolean := true; -- implement processor-internal instruction memory
|
MEM_INT_IMEM_EN : boolean := true; -- implement processor-internal instruction memory
|
MEM_INT_IMEM_SIZE : natural := 16*1024; -- size of processor-internal instruction memory in bytes
|
MEM_INT_IMEM_SIZE : natural := 16*1024; -- size of processor-internal instruction memory in bytes
|
MEM_INT_IMEM_ROM : boolean := false; -- implement processor-internal instruction memory as ROM
|
MEM_INT_IMEM_ROM : boolean := false; -- implement processor-internal instruction memory as ROM
|
-- Internal Data memory --
|
-- Internal Data memory --
|
MEM_INT_DMEM_USE : boolean := true; -- implement processor-internal data memory
|
MEM_INT_DMEM_EN : boolean := true; -- implement processor-internal data memory
|
MEM_INT_DMEM_SIZE : natural := 8*1024; -- size of processor-internal data memory in bytes
|
MEM_INT_DMEM_SIZE : natural := 8*1024; -- size of processor-internal data memory in bytes
|
-- Internal Cache memory --
|
-- Internal Cache memory --
|
ICACHE_USE : boolean := false; -- implement instruction cache
|
ICACHE_EN : boolean := false; -- implement instruction cache
|
ICACHE_NUM_BLOCKS : natural := 4; -- i-cache: number of blocks (min 1), has to be a power of 2
|
ICACHE_NUM_BLOCKS : natural := 4; -- i-cache: number of blocks (min 1), has to be a power of 2
|
ICACHE_BLOCK_SIZE : natural := 64; -- i-cache: block size in bytes (min 4), has to be a power of 2
|
ICACHE_BLOCK_SIZE : natural := 64; -- i-cache: block size in bytes (min 4), has to be a power of 2
|
-- External memory interface --
|
-- External memory interface --
|
MEM_EXT_USE : boolean := false; -- implement external memory bus interface?
|
MEM_EXT_EN : boolean := false; -- implement external memory bus interface?
|
-- Processor peripherals --
|
-- Processor peripherals --
|
IO_GPIO_USE : boolean := true; -- implement general purpose input/output port unit (GPIO)?
|
IO_GPIO_EN : boolean := true; -- implement general purpose input/output port unit (GPIO)?
|
IO_MTIME_USE : boolean := true; -- implement machine system timer (MTIME)?
|
IO_MTIME_EN : boolean := true; -- implement machine system timer (MTIME)?
|
IO_UART_USE : boolean := true; -- implement universal asynchronous receiver/transmitter (UART)?
|
IO_UART_EN : boolean := true; -- implement universal asynchronous receiver/transmitter (UART)?
|
IO_SPI_USE : boolean := true; -- implement serial peripheral interface (SPI)?
|
IO_SPI_EN : boolean := true; -- implement serial peripheral interface (SPI)?
|
IO_TWI_USE : boolean := true; -- implement two-wire interface (TWI)?
|
IO_TWI_EN : boolean := true; -- implement two-wire interface (TWI)?
|
IO_PWM_USE : boolean := true; -- implement pulse-width modulation unit (PWM)?
|
IO_PWM_EN : boolean := true; -- implement pulse-width modulation unit (PWM)?
|
IO_WDT_USE : boolean := true; -- implement watch dog timer (WDT)?
|
IO_WDT_EN : boolean := true; -- implement watch dog timer (WDT)?
|
IO_TRNG_USE : boolean := false; -- implement true random number generator (TRNG)?
|
IO_TRNG_EN : boolean := false; -- implement true random number generator (TRNG)?
|
IO_CFU0_USE : boolean := false; -- implement custom functions unit 0 (CFU0)?
|
IO_CFU0_EN : boolean := false; -- implement custom functions unit 0 (CFU0)?
|
IO_CFU1_USE : boolean := false -- implement custom functions unit 1 (CFU1)?
|
IO_CFU1_EN : boolean := false -- implement custom functions unit 1 (CFU1)?
|
);
|
);
|
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 797... |
Line 795... |
wb_stb_o : out std_ulogic; -- strobe
|
wb_stb_o : out std_ulogic; -- strobe
|
wb_cyc_o : out std_ulogic; -- valid cycle
|
wb_cyc_o : out std_ulogic; -- valid cycle
|
wb_lock_o : out std_ulogic; -- locked/exclusive bus access
|
wb_lock_o : out std_ulogic; -- locked/exclusive bus access
|
wb_ack_i : in std_ulogic := '0'; -- transfer acknowledge
|
wb_ack_i : in std_ulogic := '0'; -- transfer acknowledge
|
wb_err_i : in std_ulogic := '0'; -- transfer error
|
wb_err_i : in std_ulogic := '0'; -- transfer error
|
-- Advanced memory control signals (available if MEM_EXT_USE = true) --
|
-- Advanced memory control signals (available if MEM_EXT_EN = true) --
|
fence_o : out std_ulogic; -- indicates an executed FENCE operation
|
fence_o : out std_ulogic; -- indicates an executed FENCE operation
|
fencei_o : out std_ulogic; -- indicates an executed FENCEI operation
|
fencei_o : out std_ulogic; -- indicates an executed FENCEI operation
|
-- GPIO --
|
-- GPIO --
|
gpio_o : out std_ulogic_vector(31 downto 0); -- parallel output
|
gpio_o : out std_ulogic_vector(31 downto 0); -- parallel output
|
gpio_i : in std_ulogic_vector(31 downto 0) := (others => '0'); -- parallel input
|
gpio_i : in std_ulogic_vector(31 downto 0) := (others => '0'); -- parallel input
|
| Line 816... |
Line 814... |
-- TWI --
|
-- TWI --
|
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 --
|
-- PWM --
|
pwm_o : out std_ulogic_vector(03 downto 0); -- pwm channels
|
pwm_o : out std_ulogic_vector(03 downto 0); -- pwm channels
|
-- system time input from external MTIME (available if IO_MTIME_USE = 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 --
|
mtime_irq_i : in std_ulogic := '0'; -- machine timer interrupt, available if IO_MTIME_USE = false
|
mtime_irq_i : in std_ulogic := '0'; -- machine timer interrupt, available if IO_MTIME_EN = false
|
msw_irq_i : in std_ulogic := '0'; -- machine software interrupt
|
msw_irq_i : in std_ulogic := '0'; -- machine software interrupt
|
mext_irq_i : in std_ulogic := '0' -- machine external interrupt
|
mext_irq_i : in std_ulogic := '0' -- machine external interrupt
|
);
|
);
|
end component;
|
end component;
|
|
|
| Line 835... |
Line 833... |
HW_THREAD_ID : std_ulogic_vector(31 downto 0) := (others => '0'); -- hardware thread id
|
HW_THREAD_ID : std_ulogic_vector(31 downto 0) := (others => '0'); -- hardware thread id
|
CPU_BOOT_ADDR : std_ulogic_vector(31 downto 0) := (others => '0'); -- cpu boot address
|
CPU_BOOT_ADDR : std_ulogic_vector(31 downto 0) := (others => '0'); -- cpu boot address
|
BUS_TIMEOUT : natural := 63; -- cycles after an UNACKNOWLEDGED bus access triggers a bus fault exception
|
BUS_TIMEOUT : natural := 63; -- cycles after an UNACKNOWLEDGED bus access triggers a bus fault exception
|
-- 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_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 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?
|
| Line 900... |
Line 899... |
-- General --
|
-- General --
|
HW_THREAD_ID : std_ulogic_vector(31 downto 0):= x"00000000"; -- hardware thread id
|
HW_THREAD_ID : std_ulogic_vector(31 downto 0):= x"00000000"; -- hardware thread id
|
CPU_BOOT_ADDR : std_ulogic_vector(31 downto 0):= x"00000000"; -- cpu boot address
|
CPU_BOOT_ADDR : std_ulogic_vector(31 downto 0):= x"00000000"; -- cpu boot address
|
-- 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_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 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?
|
| Line 994... |
Line 994... |
imm_i : in std_ulogic_vector(data_width_c-1 downto 0); -- immediate
|
imm_i : in std_ulogic_vector(data_width_c-1 downto 0); -- immediate
|
-- data output --
|
-- data output --
|
cmp_o : out std_ulogic_vector(1 downto 0); -- comparator status
|
cmp_o : out std_ulogic_vector(1 downto 0); -- comparator status
|
res_o : out std_ulogic_vector(data_width_c-1 downto 0); -- ALU result
|
res_o : out std_ulogic_vector(data_width_c-1 downto 0); -- ALU result
|
add_o : out std_ulogic_vector(data_width_c-1 downto 0); -- address computation result
|
add_o : out std_ulogic_vector(data_width_c-1 downto 0); -- address computation result
|
opb_o : out std_ulogic_vector(data_width_c-1 downto 0); -- ALU operand B
|
|
-- co-processor interface --
|
-- co-processor interface --
|
cp0_start_o : out std_ulogic; -- trigger co-processor 0
|
cp0_start_o : out std_ulogic; -- trigger co-processor 0
|
cp0_data_i : in std_ulogic_vector(data_width_c-1 downto 0); -- co-processor 0 result
|
cp0_data_i : in std_ulogic_vector(data_width_c-1 downto 0); -- co-processor 0 result
|
cp0_valid_i : in std_ulogic; -- co-processor 0 result valid
|
cp0_valid_i : in std_ulogic; -- co-processor 0 result valid
|
cp1_start_o : out std_ulogic; -- trigger co-processor 1
|
cp1_start_o : out std_ulogic; -- trigger co-processor 1
|
| Line 1013... |
Line 1012... |
-- status --
|
-- status --
|
wait_o : out std_ulogic -- busy due to iterative processing units
|
wait_o : out std_ulogic -- busy due to iterative processing units
|
);
|
);
|
end component;
|
end component;
|
|
|
-- Component: CPU Co-Processor MULDIV -----------------------------------------------------
|
-- Component: CPU Co-Processor MULDIV ('M' extension) -------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
component neorv32_cpu_cp_muldiv
|
component neorv32_cpu_cp_muldiv
|
generic (
|
generic (
|
FAST_MUL_EN : boolean := false -- use DSPs for faster multiplication
|
FAST_MUL_EN : boolean := false -- use DSPs for faster multiplication
|
);
|
);
|
| Line 1034... |
Line 1033... |
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;
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|
|
|
-- Component: CPU Co-Processor Bit Manipulation ('B' extension) ---------------------------
|
|
-- -------------------------------------------------------------------------------------------
|
|
component neorv32_cpu_cp_bitmanip
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port (
|
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-- global control --
|
|
clk_i : in std_ulogic; -- global clock, rising edge
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rstn_i : in std_ulogic; -- global reset, low-active, async
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ctrl_i : in std_ulogic_vector(ctrl_width_c-1 downto 0); -- main control bus
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start_i : in std_ulogic; -- trigger operation
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-- data input --
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cmp_i : in std_ulogic_vector(1 downto 0); -- comparator status
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rs1_i : in std_ulogic_vector(data_width_c-1 downto 0); -- rf source 1
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rs2_i : in std_ulogic_vector(data_width_c-1 downto 0); -- rf source 2
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-- result and status --
|
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res_o : out std_ulogic_vector(data_width_c-1 downto 0); -- operation result
|
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valid_o : out std_ulogic -- data output valid
|
|
);
|
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end component;
|
|
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-- 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 1202... |
Line 1220... |
component neorv32_imem
|
component neorv32_imem
|
generic (
|
generic (
|
IMEM_BASE : std_ulogic_vector(31 downto 0) := x"00000000"; -- memory base address
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IMEM_BASE : std_ulogic_vector(31 downto 0) := x"00000000"; -- memory base address
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IMEM_SIZE : natural := 4*1024; -- processor-internal instruction memory size in bytes
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IMEM_SIZE : natural := 4*1024; -- processor-internal instruction memory size in bytes
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IMEM_AS_ROM : boolean := false; -- implement IMEM as read-only memory?
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IMEM_AS_ROM : boolean := false; -- implement IMEM as read-only memory?
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BOOTLOADER_USE : boolean := true -- implement and use bootloader?
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BOOTLOADER_EN : boolean := true -- implement and use bootloader?
|
);
|
);
|
port (
|
port (
|
clk_i : in std_ulogic; -- global clock line
|
clk_i : in std_ulogic; -- global clock line
|
rden_i : in std_ulogic; -- read enable
|
rden_i : in std_ulogic; -- read enable
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wren_i : in std_ulogic; -- write enable
|
wren_i : in std_ulogic; -- write enable
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| Line 1425... |
Line 1443... |
-- -------------------------------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
component neorv32_wishbone
|
component neorv32_wishbone
|
generic (
|
generic (
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WB_PIPELINED_MODE : boolean := false; -- false: classic/standard wishbone mode, true: pipelined wishbone mode
|
WB_PIPELINED_MODE : boolean := false; -- false: classic/standard wishbone mode, true: pipelined wishbone mode
|
-- Internal instruction memory --
|
-- Internal instruction memory --
|
MEM_INT_IMEM_USE : boolean := true; -- implement processor-internal instruction memory
|
MEM_INT_IMEM_EN : boolean := true; -- implement processor-internal instruction memory
|
MEM_INT_IMEM_SIZE : natural := 8*1024; -- size of processor-internal instruction memory in bytes
|
MEM_INT_IMEM_SIZE : natural := 8*1024; -- size of processor-internal instruction memory in bytes
|
-- Internal data memory --
|
-- Internal data memory --
|
MEM_INT_DMEM_USE : boolean := true; -- implement processor-internal data memory
|
MEM_INT_DMEM_EN : boolean := true; -- implement processor-internal data memory
|
MEM_INT_DMEM_SIZE : natural := 4*1024 -- size of processor-internal data memory in bytes
|
MEM_INT_DMEM_SIZE : natural := 4*1024 -- size of processor-internal data memory in bytes
|
);
|
);
|
port (
|
port (
|
-- global control --
|
-- global control --
|
clk_i : in std_ulogic; -- global clock line
|
clk_i : in std_ulogic; -- global clock line
|
| Line 1511... |
Line 1529... |
-- -------------------------------------------------------------------------------------------
|
-- -------------------------------------------------------------------------------------------
|
component neorv32_sysinfo
|
component neorv32_sysinfo
|
generic (
|
generic (
|
-- General --
|
-- General --
|
CLOCK_FREQUENCY : natural := 0; -- clock frequency of clk_i in Hz
|
CLOCK_FREQUENCY : natural := 0; -- clock frequency of clk_i in Hz
|
BOOTLOADER_USE : boolean := true; -- implement processor-internal bootloader?
|
BOOTLOADER_EN : boolean := true; -- implement processor-internal bootloader?
|
USER_CODE : std_ulogic_vector(31 downto 0) := x"00000000"; -- custom user code
|
USER_CODE : std_ulogic_vector(31 downto 0) := x"00000000"; -- custom user code
|
-- Internal Instruction memory --
|
-- Internal Instruction memory --
|
MEM_INT_IMEM_USE : boolean := true; -- implement processor-internal instruction memory
|
MEM_INT_IMEM_EN : boolean := true; -- implement processor-internal instruction memory
|
MEM_INT_IMEM_SIZE : natural := 8*1024; -- size of processor-internal instruction memory in bytes
|
MEM_INT_IMEM_SIZE : natural := 8*1024; -- size of processor-internal instruction memory in bytes
|
MEM_INT_IMEM_ROM : boolean := false; -- implement processor-internal instruction memory as ROM
|
MEM_INT_IMEM_ROM : boolean := false; -- implement processor-internal instruction memory as ROM
|
-- Internal Data memory --
|
-- Internal Data memory --
|
MEM_INT_DMEM_USE : boolean := true; -- implement processor-internal data memory
|
MEM_INT_DMEM_EN : boolean := true; -- implement processor-internal data memory
|
MEM_INT_DMEM_SIZE : natural := 4*1024; -- size of processor-internal data memory in bytes
|
MEM_INT_DMEM_SIZE : natural := 4*1024; -- size of processor-internal data memory in bytes
|
-- Internal Cache memory --
|
-- Internal Cache memory --
|
ICACHE_USE : boolean := true; -- implement instruction cache
|
ICACHE_EN : boolean := true; -- implement instruction cache
|
ICACHE_NUM_BLOCKS : natural := 4; -- i-cache: number of blocks (min 2), has to be a power of 2
|
ICACHE_NUM_BLOCKS : natural := 4; -- i-cache: number of blocks (min 2), has to be a power of 2
|
ICACHE_BLOCK_SIZE : natural := 64; -- i-cache: block size in bytes (min 4), has to be a power of 2
|
ICACHE_BLOCK_SIZE : natural := 64; -- i-cache: block size in bytes (min 4), has to be a power of 2
|
ICACHE_ASSOCIATIVITY : natural := 1; -- i-cache: associativity (min 1), has to be a power 2
|
ICACHE_ASSOCIATIVITY : natural := 1; -- i-cache: associativity (min 1), has to be a power 2
|
-- External memory interface --
|
-- External memory interface --
|
MEM_EXT_USE : boolean := false; -- implement external memory bus interface?
|
MEM_EXT_EN : boolean := false; -- implement external memory bus interface?
|
-- Processor peripherals --
|
-- Processor peripherals --
|
IO_GPIO_USE : boolean := true; -- implement general purpose input/output port unit (GPIO)?
|
IO_GPIO_EN : boolean := true; -- implement general purpose input/output port unit (GPIO)?
|
IO_MTIME_USE : boolean := true; -- implement machine system timer (MTIME)?
|
IO_MTIME_EN : boolean := true; -- implement machine system timer (MTIME)?
|
IO_UART_USE : boolean := true; -- implement universal asynchronous receiver/transmitter (UART)?
|
IO_UART_EN : boolean := true; -- implement universal asynchronous receiver/transmitter (UART)?
|
IO_SPI_USE : boolean := true; -- implement serial peripheral interface (SPI)?
|
IO_SPI_EN : boolean := true; -- implement serial peripheral interface (SPI)?
|
IO_TWI_USE : boolean := true; -- implement two-wire interface (TWI)?
|
IO_TWI_EN : boolean := true; -- implement two-wire interface (TWI)?
|
IO_PWM_USE : boolean := true; -- implement pulse-width modulation unit (PWM)?
|
IO_PWM_EN : boolean := true; -- implement pulse-width modulation unit (PWM)?
|
IO_WDT_USE : boolean := true; -- implement watch dog timer (WDT)?
|
IO_WDT_EN : boolean := true; -- implement watch dog timer (WDT)?
|
IO_TRNG_USE : boolean := true; -- implement true random number generator (TRNG)?
|
IO_TRNG_EN : boolean := true; -- implement true random number generator (TRNG)?
|
IO_CFU0_USE : boolean := true; -- implement custom functions unit 0 (CFU0)?
|
IO_CFU0_EN : boolean := true; -- implement custom functions unit 0 (CFU0)?
|
IO_CFU1_USE : boolean := true -- implement custom functions unit 1 (CFU1)?
|
IO_CFU1_EN : boolean := true -- implement custom functions unit 1 (CFU1)?
|
);
|
);
|
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
|
