| Line 55... |
Line 55... |
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 muld/div extension?
|
CPU_EXTENSION_RISCV_M : boolean; -- implement muld/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 190... |
Line 191... |
is_atomic_sc : std_ulogic;
|
is_atomic_sc : std_ulogic;
|
is_float_op : std_ulogic;
|
is_float_op : std_ulogic;
|
sys_env_cmd : std_ulogic_vector(11 downto 0);
|
sys_env_cmd : std_ulogic_vector(11 downto 0);
|
is_m_mul : std_ulogic;
|
is_m_mul : std_ulogic;
|
is_m_div : std_ulogic;
|
is_m_div : std_ulogic;
|
|
is_bitmanip_imm : std_ulogic;
|
|
is_bitmanip_reg : std_ulogic;
|
end record;
|
end record;
|
signal decode_aux : decode_aux_t;
|
signal decode_aux : decode_aux_t;
|
|
|
-- instruction execution engine --
|
-- instruction execution engine --
|
type execute_engine_state_t is (SYS_WAIT, DISPATCH, TRAP_ENTER, TRAP_EXIT, TRAP_EXECUTE, EXECUTE, ALU_WAIT, BRANCH,
|
type execute_engine_state_t is (SYS_WAIT, DISPATCH, TRAP_ENTER, TRAP_EXIT, TRAP_EXECUTE, EXECUTE, ALU_WAIT, BRANCH,
|
| Line 235... |
Line 238... |
irq_ack : std_ulogic_vector(interrupt_width_c-1 downto 0); -- acknowledge specific interrupt
|
irq_ack : std_ulogic_vector(interrupt_width_c-1 downto 0); -- acknowledge specific interrupt
|
irq_ack_nxt : std_ulogic_vector(interrupt_width_c-1 downto 0);
|
irq_ack_nxt : std_ulogic_vector(interrupt_width_c-1 downto 0);
|
cause : std_ulogic_vector(6 downto 0); -- trap ID for mcause CSR
|
cause : std_ulogic_vector(6 downto 0); -- trap ID for mcause CSR
|
cause_nxt : std_ulogic_vector(6 downto 0);
|
cause_nxt : std_ulogic_vector(6 downto 0);
|
db_irq_fire : std_ulogic; -- set if there is a valid IRQ source in the "enter debug mode" trap buffer
|
db_irq_fire : std_ulogic; -- set if there is a valid IRQ source in the "enter debug mode" trap buffer
|
db_irq_en : std_ulogic; -- set if IRQs are allowed in debu mode
|
db_irq_en : std_ulogic; -- set if IRQs are allowed in debug mode
|
--
|
--
|
env_start : std_ulogic; -- start trap handler env
|
env_start : std_ulogic; -- start trap handler env
|
env_start_ack : std_ulogic; -- start of trap handler acknowledged
|
env_start_ack : std_ulogic; -- start of trap handler acknowledged
|
env_end : std_ulogic; -- end trap handler env
|
env_end : std_ulogic; -- end trap handler env
|
--
|
--
|
| Line 273... |
Line 276... |
re : std_ulogic; -- csr read enable
|
re : std_ulogic; -- csr read enable
|
re_nxt : std_ulogic;
|
re_nxt : std_ulogic;
|
wdata : std_ulogic_vector(data_width_c-1 downto 0); -- csr write data
|
wdata : std_ulogic_vector(data_width_c-1 downto 0); -- csr write data
|
rdata : std_ulogic_vector(data_width_c-1 downto 0); -- csr read data
|
rdata : std_ulogic_vector(data_width_c-1 downto 0); -- csr read data
|
--
|
--
|
mstatus_fs : std_ulogic; -- mstatus.FS: FPU status (single-bit, only OFF and DIRTY states)
|
|
mstatus_mie : std_ulogic; -- mstatus.MIE: global IRQ enable (R/W)
|
mstatus_mie : std_ulogic; -- mstatus.MIE: global IRQ enable (R/W)
|
mstatus_mpie : std_ulogic; -- mstatus.MPIE: previous global IRQ enable (R/W)
|
mstatus_mpie : std_ulogic; -- mstatus.MPIE: previous global IRQ enable (R/W)
|
mstatus_mpp : std_ulogic_vector(1 downto 0); -- mstatus.MPP: machine previous privilege mode
|
mstatus_mpp : std_ulogic_vector(1 downto 0); -- mstatus.MPP: machine previous privilege mode
|
mstatus_tw : std_ulogic; -- mstatus:TW trigger illegal instruction exception if WFI is executed outside of M-mode
|
mstatus_tw : std_ulogic; -- mstatus:TW trigger illegal instruction exception if WFI is executed outside of M-mode
|
--
|
--
|
| Line 820... |
Line 822... |
decode_aux.is_atomic_lr <= '0';
|
decode_aux.is_atomic_lr <= '0';
|
decode_aux.is_atomic_sc <= '0';
|
decode_aux.is_atomic_sc <= '0';
|
decode_aux.is_float_op <= '0';
|
decode_aux.is_float_op <= '0';
|
decode_aux.is_m_mul <= '0';
|
decode_aux.is_m_mul <= '0';
|
decode_aux.is_m_div <= '0';
|
decode_aux.is_m_div <= '0';
|
|
decode_aux.is_bitmanip_imm <= '0';
|
|
decode_aux.is_bitmanip_reg <= '0';
|
|
|
-- is immediate ALU operation? --
|
-- is immediate ALU operation? --
|
decode_aux.alu_immediate <= not execute_engine.i_reg(instr_opcode_msb_c-1);
|
decode_aux.alu_immediate <= not execute_engine.i_reg(instr_opcode_msb_c-1);
|
|
|
-- is rs1 == r0? --
|
-- is rs1 == r0? --
|
| Line 833... |
Line 837... |
if (CPU_EXTENSION_RISCV_A = true) and (execute_engine.i_reg(instr_opcode_lsb_c+3 downto instr_opcode_lsb_c+2) = "11") then -- valid atomic sub-opcode
|
if (CPU_EXTENSION_RISCV_A = true) and (execute_engine.i_reg(instr_opcode_lsb_c+3 downto instr_opcode_lsb_c+2) = "11") then -- valid atomic sub-opcode
|
decode_aux.is_atomic_lr <= not execute_engine.i_reg(instr_funct5_lsb_c);
|
decode_aux.is_atomic_lr <= not execute_engine.i_reg(instr_funct5_lsb_c);
|
decode_aux.is_atomic_sc <= execute_engine.i_reg(instr_funct5_lsb_c);
|
decode_aux.is_atomic_sc <= execute_engine.i_reg(instr_funct5_lsb_c);
|
end if;
|
end if;
|
|
|
|
-- is BITMANIP instruction? --
|
|
-- pretty complex as we have to extract this from the ALU/ALUI instruction space --
|
|
-- immediate operation --
|
|
if ((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) = "0110000") and (execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = "001") and
|
|
(
|
|
(execute_engine.i_reg(instr_funct12_lsb_c+4 downto instr_funct12_lsb_c) = "00000") or -- CLZ
|
|
(execute_engine.i_reg(instr_funct12_lsb_c+4 downto instr_funct12_lsb_c) = "00001") or -- CTZ
|
|
(execute_engine.i_reg(instr_funct12_lsb_c+4 downto instr_funct12_lsb_c) = "00010") or -- CPOP
|
|
(execute_engine.i_reg(instr_funct12_lsb_c+4 downto instr_funct12_lsb_c) = "00100") or -- SEXT.B
|
|
(execute_engine.i_reg(instr_funct12_lsb_c+4 downto instr_funct12_lsb_c) = "00101") -- SEXT.H
|
|
)
|
|
) or
|
|
((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) = "0110000") and (execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = "101")) or -- RORI
|
|
((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) = "0010100") and (execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = "101") and (execute_engine.i_reg(instr_funct12_lsb_c+4 downto instr_funct12_lsb_c) = "00111")) or -- ORCB
|
|
((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) = "0110100") and (execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = "101") and (execute_engine.i_reg(instr_funct12_lsb_c+4 downto instr_funct12_lsb_c) = "11000")) then -- REV8
|
|
decode_aux.is_bitmanip_imm <= '1';
|
|
end if;
|
|
-- register operation --
|
|
if ((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) = "0110000") and (execute_engine.i_reg(instr_funct3_msb_c-1 downto instr_funct3_lsb_c) = "01")) or -- ROR / ROL
|
|
((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) = "0000101") and (execute_engine.i_reg(instr_funct3_msb_c) = '1')) or -- MIN[U] / MAX[U]
|
|
((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) = "0000100") and (execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = "100")) or -- ZEXTH
|
|
((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) = "0100000") and
|
|
(
|
|
(execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = "111") or -- ANDN
|
|
(execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = "110") or -- ORN
|
|
(execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = "100") -- XORN
|
|
)
|
|
) then
|
|
decode_aux.is_bitmanip_reg <= '1';
|
|
end if;
|
|
|
-- floating-point operations (Zfinx) --
|
-- floating-point operations (Zfinx) --
|
if ((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c+3) = "0000")) or -- FADD.S / FSUB.S
|
if ((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c+3) = "0000")) or -- FADD.S / FSUB.S
|
((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c+2) = "00010")) or -- FMUL.S
|
((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c+2) = "00010")) or -- FMUL.S
|
((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c+2) = "11100") and (execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = "001")) or -- FCLASS.S
|
((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c+2) = "11100") and (execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = "001")) or -- FCLASS.S
|
((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c+2) = "00100") and (execute_engine.i_reg(instr_funct3_msb_c) = '0')) or -- FSGNJ[N/X].S
|
((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c+2) = "00100") and (execute_engine.i_reg(instr_funct3_msb_c) = '0')) or -- FSGNJ[N/X].S
|
| Line 950... |
Line 985... |
execute_engine.state_nxt <= EXECUTE;
|
execute_engine.state_nxt <= EXECUTE;
|
end if;
|
end if;
|
end if;
|
end if;
|
|
|
|
|
when TRAP_ENTER => -- Start trap environment - get TVEC, stay here for sleep mode
|
when TRAP_ENTER => -- Start trap environment - get xTVEC, stay here for sleep mode
|
-- ------------------------------------------------------------
|
-- ------------------------------------------------------------
|
if (trap_ctrl.env_start = '1') then -- trap triggered?
|
if (trap_ctrl.env_start = '1') then -- trap triggered?
|
trap_ctrl.env_start_ack <= '1';
|
trap_ctrl.env_start_ack <= '1';
|
execute_engine.state_nxt <= TRAP_EXECUTE;
|
execute_engine.state_nxt <= TRAP_EXECUTE;
|
end if;
|
end if;
|
|
|
when TRAP_EXIT => -- Return from trap environment - get EPC
|
when TRAP_EXIT => -- Return from trap environment - get xEPC
|
-- ------------------------------------------------------------
|
-- ------------------------------------------------------------
|
trap_ctrl.env_end <= '1';
|
trap_ctrl.env_end <= '1';
|
execute_engine.state_nxt <= TRAP_EXECUTE;
|
execute_engine.state_nxt <= TRAP_EXECUTE;
|
|
|
when TRAP_EXECUTE => -- Start trap environment -> jump to *TVEC / return from trap environment -> jump to EPC
|
when TRAP_EXECUTE => -- Start trap environment -> jump to xTVEC / return from trap environment -> jump to xEPC
|
-- ------------------------------------------------------------
|
-- ------------------------------------------------------------
|
execute_engine.pc_mux_sel <= '0'; -- next_PC
|
execute_engine.pc_mux_sel <= '0'; -- next_PC
|
fetch_engine.reset <= '1';
|
fetch_engine.reset <= '1';
|
execute_engine.pc_we <= '1';
|
execute_engine.pc_we <= '1';
|
execute_engine.sleep_nxt <= '0'; -- disable sleep mode
|
execute_engine.sleep_nxt <= '0'; -- disable sleep mode
|
| Line 1011... |
Line 1046... |
-- co-processor MULDIV operation? --
|
-- co-processor MULDIV operation? --
|
if ((CPU_EXTENSION_RISCV_M = true) and ((decode_aux.is_m_mul = '1') or (decode_aux.is_m_div = '1'))) or -- MUL/DIV
|
if ((CPU_EXTENSION_RISCV_M = true) and ((decode_aux.is_m_mul = '1') or (decode_aux.is_m_div = '1'))) or -- MUL/DIV
|
((CPU_EXTENSION_RISCV_Zmmul = true) and (decode_aux.is_m_mul = '1')) then -- MUL
|
((CPU_EXTENSION_RISCV_Zmmul = true) and (decode_aux.is_m_mul = '1')) then -- MUL
|
ctrl_nxt(ctrl_cp_id_msb_c downto ctrl_cp_id_lsb_c) <= cp_sel_muldiv_c; -- use MULDIV CP
|
ctrl_nxt(ctrl_cp_id_msb_c downto ctrl_cp_id_lsb_c) <= cp_sel_muldiv_c; -- use MULDIV CP
|
ctrl_nxt(ctrl_alu_func1_c downto ctrl_alu_func0_c) <= alu_func_cmd_copro_c;
|
ctrl_nxt(ctrl_alu_func1_c downto ctrl_alu_func0_c) <= alu_func_cmd_copro_c;
|
|
-- co-processor bit manipulation operation? --
|
|
elsif (CPU_EXTENSION_RISCV_Zbb = true) and
|
|
(((execute_engine.i_reg(instr_opcode_lsb_c+5) = opcode_alu_c(5)) and (decode_aux.is_bitmanip_reg = '1')) or -- register operation
|
|
((execute_engine.i_reg(instr_opcode_lsb_c+5) = opcode_alui_c(5)) and (decode_aux.is_bitmanip_imm = '1'))) then -- immediate operation
|
|
ctrl_nxt(ctrl_cp_id_msb_c downto ctrl_cp_id_lsb_c) <= cp_sel_bitmanip_c; -- use BITMANIP CP
|
|
ctrl_nxt(ctrl_alu_func1_c downto ctrl_alu_func0_c) <= alu_func_cmd_copro_c;
|
else
|
else
|
-- ALU operation, function select --
|
-- ALU operation, function select --
|
ctrl_nxt(ctrl_cp_id_msb_c downto ctrl_cp_id_lsb_c) <= cp_sel_shifter_c; -- use SHIFTER CP (only relevant for shift operations)
|
ctrl_nxt(ctrl_cp_id_msb_c downto ctrl_cp_id_lsb_c) <= cp_sel_shifter_c; -- use SHIFTER CP (only relevant for shift operations)
|
case execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) is
|
case execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) is
|
when funct3_sll_c | funct3_sr_c => -- SHIFT operation
|
when funct3_sll_c | funct3_sr_c => -- SHIFT operation
|
| Line 1028... |
Line 1069... |
|
|
-- multi cycle ALU operation? --
|
-- multi cycle ALU operation? --
|
if (execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = funct3_sll_c) or -- SLL shift operation?
|
if (execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = funct3_sll_c) or -- SLL shift operation?
|
(execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = funct3_sr_c) or -- SR shift operation?
|
(execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = funct3_sr_c) or -- SR shift operation?
|
((CPU_EXTENSION_RISCV_M = true) and ((decode_aux.is_m_mul = '1') or (decode_aux.is_m_div = '1'))) or -- MUL/DIV
|
((CPU_EXTENSION_RISCV_M = true) and ((decode_aux.is_m_mul = '1') or (decode_aux.is_m_div = '1'))) or -- MUL/DIV
|
((CPU_EXTENSION_RISCV_Zmmul = true) and (decode_aux.is_m_mul = '1')) then -- MUL
|
((CPU_EXTENSION_RISCV_Zmmul = true) and (decode_aux.is_m_mul = '1')) or -- MUL
|
|
((CPU_EXTENSION_RISCV_Zbb = true) and (
|
|
((execute_engine.i_reg(instr_opcode_lsb_c+5) = opcode_alu_c(5)) and (decode_aux.is_bitmanip_reg = '1')) or -- BITMANIP CP register operation?
|
|
((execute_engine.i_reg(instr_opcode_lsb_c+5) = opcode_alui_c(5)) and (decode_aux.is_bitmanip_imm = '1'))) -- BITMANIP CP immediate operation?
|
|
) then
|
execute_engine.state_nxt <= ALU_WAIT;
|
execute_engine.state_nxt <= ALU_WAIT;
|
else -- single cycle ALU operation
|
else -- single cycle ALU operation
|
ctrl_nxt(ctrl_rf_wb_en_c) <= '1'; -- valid RF write-back
|
ctrl_nxt(ctrl_rf_wb_en_c) <= '1'; -- valid RF write-back
|
execute_engine.state_nxt <= DISPATCH;
|
execute_engine.state_nxt <= DISPATCH;
|
end if;
|
end if;
|
| Line 1098... |
Line 1143... |
execute_engine.state_nxt <= SYS_WAIT;
|
execute_engine.state_nxt <= SYS_WAIT;
|
end if;
|
end if;
|
|
|
when opcode_fop_c => -- floating-point operations
|
when opcode_fop_c => -- floating-point operations
|
-- ------------------------------------------------------------
|
-- ------------------------------------------------------------
|
if (CPU_EXTENSION_RISCV_Zfinx = true) and (decode_aux.is_float_op = '1') and (csr.mstatus_fs = '1') then
|
if (CPU_EXTENSION_RISCV_Zfinx = true) and (decode_aux.is_float_op = '1') then
|
ctrl_nxt(ctrl_cp_id_msb_c downto ctrl_cp_id_lsb_c) <= cp_sel_fpu_c; -- trigger FPU CP
|
ctrl_nxt(ctrl_cp_id_msb_c downto ctrl_cp_id_lsb_c) <= cp_sel_fpu_c; -- trigger FPU CP
|
ctrl_nxt(ctrl_alu_func1_c downto ctrl_alu_func0_c) <= alu_func_cmd_copro_c;
|
ctrl_nxt(ctrl_alu_func1_c downto ctrl_alu_func0_c) <= alu_func_cmd_copro_c;
|
execute_engine.state_nxt <= ALU_WAIT;
|
execute_engine.state_nxt <= ALU_WAIT;
|
else
|
else
|
execute_engine.state_nxt <= SYS_WAIT;
|
execute_engine.state_nxt <= SYS_WAIT;
|
| Line 1121... |
Line 1166... |
case decode_aux.sys_env_cmd is -- use a simplified input here (with permanent zeros)
|
case decode_aux.sys_env_cmd is -- use a simplified input here (with permanent zeros)
|
when funct12_ecall_c => trap_ctrl.env_call <= '1'; -- ECALL
|
when funct12_ecall_c => trap_ctrl.env_call <= '1'; -- ECALL
|
when funct12_ebreak_c => trap_ctrl.break_point <= '1'; -- EBREAK
|
when funct12_ebreak_c => trap_ctrl.break_point <= '1'; -- EBREAK
|
when funct12_wfi_c => execute_engine.sleep_nxt <= '1'; -- WFI
|
when funct12_wfi_c => execute_engine.sleep_nxt <= '1'; -- WFI
|
when funct12_mret_c => -- MRET
|
when funct12_mret_c => -- MRET
|
if (CPU_EXTENSION_RISCV_U = true) and (csr.priv_m_mode = '1') then -- only allowed in M-mode
|
if (csr.priv_m_mode = '1') then -- only allowed in M-mode
|
execute_engine.state_nxt <= TRAP_EXIT;
|
execute_engine.state_nxt <= TRAP_EXIT;
|
else
|
else
|
NULL;
|
NULL;
|
end if;
|
end if;
|
when funct12_dret_c => -- DRET
|
when funct12_dret_c => -- DRET
|
| Line 1282... |
Line 1327... |
csr_acc_valid <= '0'; -- default = invalid access
|
csr_acc_valid <= '0'; -- default = invalid access
|
case csr.addr is
|
case csr.addr is
|
|
|
-- floating-point CSRs --
|
-- floating-point CSRs --
|
when csr_fflags_c | csr_frm_c | csr_fcsr_c =>
|
when csr_fflags_c | csr_frm_c | csr_fcsr_c =>
|
if (CPU_EXTENSION_RISCV_Zfinx = true) and (csr.mstatus_fs = '1') then -- FPU implemented and enabled?
|
if (CPU_EXTENSION_RISCV_Zfinx = true) then -- FPU implemented?
|
csr_acc_valid <= '1'; -- full access for everyone
|
csr_acc_valid <= '1'; -- full access for everyone
|
else
|
else
|
NULL;
|
NULL;
|
end if;
|
end if;
|
|
|
| Line 1294... |
Line 1339... |
when csr_mstatus_c | csr_mstatush_c | csr_misa_c | csr_mie_c | csr_mtvec_c | csr_mcounteren_c | csr_mscratch_c | csr_mepc_c | csr_mcause_c =>
|
when csr_mstatus_c | csr_mstatush_c | csr_misa_c | csr_mie_c | csr_mtvec_c | csr_mcounteren_c | csr_mscratch_c | csr_mepc_c | csr_mcause_c =>
|
csr_acc_valid <= csr.priv_m_mode; -- M-mode only, NOTE: MISA is read-only in the NEORV32 but we do not cause an exception here for compatibility
|
csr_acc_valid <= csr.priv_m_mode; -- M-mode only, NOTE: MISA is read-only in the NEORV32 but we do not cause an exception here for compatibility
|
when csr_mip_c | csr_mtval_c => -- NOTE: MIP and MTVAL are read-only in the NEORV32!
|
when csr_mip_c | csr_mtval_c => -- NOTE: MIP and MTVAL are read-only in the NEORV32!
|
csr_acc_valid <= (not csr_wacc_v) and csr.priv_m_mode; -- M-mode only, read-only
|
csr_acc_valid <= (not csr_wacc_v) and csr.priv_m_mode; -- M-mode only, read-only
|
|
|
-- physical memory protection (PMP) - address & configuration --
|
-- physical memory protection (PMP) --
|
when csr_pmpaddr0_c | csr_pmpaddr1_c | csr_pmpaddr2_c | csr_pmpaddr3_c | csr_pmpaddr4_c | csr_pmpaddr5_c | csr_pmpaddr6_c | csr_pmpaddr7_c |
|
when csr_pmpaddr0_c | csr_pmpaddr1_c | csr_pmpaddr2_c | csr_pmpaddr3_c | csr_pmpaddr4_c | csr_pmpaddr5_c | csr_pmpaddr6_c | csr_pmpaddr7_c | -- address
|
csr_pmpaddr8_c | csr_pmpaddr9_c | csr_pmpaddr10_c | csr_pmpaddr11_c | csr_pmpaddr12_c | csr_pmpaddr13_c | csr_pmpaddr14_c | csr_pmpaddr15_c |
|
csr_pmpaddr8_c | csr_pmpaddr9_c | csr_pmpaddr10_c | csr_pmpaddr11_c | csr_pmpaddr12_c | csr_pmpaddr13_c | csr_pmpaddr14_c | csr_pmpaddr15_c |
|
csr_pmpaddr16_c | csr_pmpaddr17_c | csr_pmpaddr18_c | csr_pmpaddr19_c | csr_pmpaddr20_c | csr_pmpaddr21_c | csr_pmpaddr22_c | csr_pmpaddr23_c |
|
csr_pmpaddr16_c | csr_pmpaddr17_c | csr_pmpaddr18_c | csr_pmpaddr19_c | csr_pmpaddr20_c | csr_pmpaddr21_c | csr_pmpaddr22_c | csr_pmpaddr23_c |
|
csr_pmpaddr24_c | csr_pmpaddr25_c | csr_pmpaddr26_c | csr_pmpaddr27_c | csr_pmpaddr28_c | csr_pmpaddr29_c | csr_pmpaddr30_c | csr_pmpaddr31_c |
|
csr_pmpaddr24_c | csr_pmpaddr25_c | csr_pmpaddr26_c | csr_pmpaddr27_c | csr_pmpaddr28_c | csr_pmpaddr29_c | csr_pmpaddr30_c | csr_pmpaddr31_c |
|
csr_pmpaddr32_c | csr_pmpaddr33_c | csr_pmpaddr34_c | csr_pmpaddr35_c | csr_pmpaddr36_c | csr_pmpaddr37_c | csr_pmpaddr38_c | csr_pmpaddr39_c |
|
csr_pmpaddr32_c | csr_pmpaddr33_c | csr_pmpaddr34_c | csr_pmpaddr35_c | csr_pmpaddr36_c | csr_pmpaddr37_c | csr_pmpaddr38_c | csr_pmpaddr39_c |
|
csr_pmpaddr40_c | csr_pmpaddr41_c | csr_pmpaddr42_c | csr_pmpaddr43_c | csr_pmpaddr44_c | csr_pmpaddr45_c | csr_pmpaddr46_c | csr_pmpaddr47_c |
|
csr_pmpaddr40_c | csr_pmpaddr41_c | csr_pmpaddr42_c | csr_pmpaddr43_c | csr_pmpaddr44_c | csr_pmpaddr45_c | csr_pmpaddr46_c | csr_pmpaddr47_c |
|
csr_pmpaddr48_c | csr_pmpaddr49_c | csr_pmpaddr50_c | csr_pmpaddr51_c | csr_pmpaddr52_c | csr_pmpaddr53_c | csr_pmpaddr54_c | csr_pmpaddr55_c |
|
csr_pmpaddr48_c | csr_pmpaddr49_c | csr_pmpaddr50_c | csr_pmpaddr51_c | csr_pmpaddr52_c | csr_pmpaddr53_c | csr_pmpaddr54_c | csr_pmpaddr55_c |
|
csr_pmpaddr56_c | csr_pmpaddr57_c | csr_pmpaddr58_c | csr_pmpaddr59_c | csr_pmpaddr60_c | csr_pmpaddr61_c | csr_pmpaddr62_c | csr_pmpaddr63_c |
|
csr_pmpaddr56_c | csr_pmpaddr57_c | csr_pmpaddr58_c | csr_pmpaddr59_c | csr_pmpaddr60_c | csr_pmpaddr61_c | csr_pmpaddr62_c | csr_pmpaddr63_c |
|
csr_pmpcfg0_c | csr_pmpcfg1_c | csr_pmpcfg2_c | csr_pmpcfg3_c | csr_pmpcfg4_c | csr_pmpcfg5_c | csr_pmpcfg6_c | csr_pmpcfg7_c |
|
csr_pmpcfg0_c | csr_pmpcfg1_c | csr_pmpcfg2_c | csr_pmpcfg3_c | csr_pmpcfg4_c | csr_pmpcfg5_c | csr_pmpcfg6_c | csr_pmpcfg7_c | -- configuration
|
csr_pmpcfg8_c | csr_pmpcfg9_c | csr_pmpcfg10_c | csr_pmpcfg11_c | csr_pmpcfg12_c | csr_pmpcfg13_c | csr_pmpcfg14_c | csr_pmpcfg15_c =>
|
csr_pmpcfg8_c | csr_pmpcfg9_c | csr_pmpcfg10_c | csr_pmpcfg11_c | csr_pmpcfg12_c | csr_pmpcfg13_c | csr_pmpcfg14_c | csr_pmpcfg15_c =>
|
if (PMP_NUM_REGIONS > 0) then
|
if (PMP_NUM_REGIONS > 0) then
|
csr_acc_valid <= csr.priv_m_mode; -- M-mode only
|
csr_acc_valid <= csr.priv_m_mode; -- M-mode only
|
else
|
else
|
NULL;
|
NULL;
|
| Line 1355... |
Line 1400... |
|
|
when csr_mcountinhibit_c =>
|
when csr_mcountinhibit_c =>
|
csr_acc_valid <= csr.priv_m_mode; -- M-mode only
|
csr_acc_valid <= csr.priv_m_mode; -- M-mode only
|
|
|
|
|
-- machine information registers & custom (NEORV32-specific) read-only CSRs --
|
-- machine information registers, read-only --
|
when csr_mvendorid_c | csr_marchid_c | csr_mimpid_c | csr_mhartid_c | csr_mconfigptr_c | csr_mzext_c =>
|
when csr_mvendorid_c | csr_marchid_c | csr_mimpid_c | csr_mhartid_c | csr_mconfigptr_c =>
|
csr_acc_valid <= (not csr_wacc_v) and csr.priv_m_mode; -- M-mode only, read-only
|
csr_acc_valid <= (not csr_wacc_v) and csr.priv_m_mode; -- M-mode only, read-only
|
|
|
-- debug mode CSRs --
|
-- debug mode CSRs --
|
when csr_dcsr_c | csr_dpc_c | csr_dscratch0_c =>
|
when csr_dcsr_c | csr_dpc_c | csr_dscratch0_c =>
|
if (CPU_EXTENSION_RISCV_DEBUG = true) then
|
if (CPU_EXTENSION_RISCV_DEBUG = true) then
|
csr_acc_valid <= debug_ctrl.running; -- access in only in debug-mode
|
csr_acc_valid <= debug_ctrl.running; -- access only in debug-mode
|
else
|
else
|
NULL;
|
NULL;
|
end if;
|
end if;
|
|
|
-- undefined / not implemented --
|
-- undefined / not implemented --
|
| Line 1415... |
Line 1460... |
end if;
|
end if;
|
elsif (decode_aux.is_m_div = '1') then -- DIV
|
elsif (decode_aux.is_m_div = '1') then -- DIV
|
if (CPU_EXTENSION_RISCV_M = false) then -- not implemented
|
if (CPU_EXTENSION_RISCV_M = false) then -- not implemented
|
illegal_instruction <= '1';
|
illegal_instruction <= '1';
|
end if;
|
end if;
|
|
elsif (decode_aux.is_bitmanip_reg = '1') then -- bit manipulation
|
|
if (CPU_EXTENSION_RISCV_Zbb = false) then -- not implemented
|
|
illegal_instruction <= '1';
|
|
end if;
|
elsif ((execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = funct3_subadd_c) or
|
elsif ((execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = funct3_subadd_c) or
|
(execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = funct3_sr_c)) and -- ADD/SUB or SRA/SRL check
|
(execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = funct3_sr_c)) and -- ADD/SUB or SRA/SRL check
|
((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) /= "0000000") and
|
((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) /= "0000000") and
|
(execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) /= "0100000")) then -- ADD/SUB or SRA/SRL select
|
(execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) /= "0100000")) then -- ADD/SUB or SRA/SRL select
|
illegal_instruction <= '1';
|
illegal_instruction <= '1';
|
| Line 1431... |
Line 1480... |
illegal_register <= '1';
|
illegal_register <= '1';
|
end if;
|
end if;
|
|
|
when opcode_alui_c => -- check ALUI.funct7
|
when opcode_alui_c => -- check ALUI.funct7
|
-- ------------------------------------------------------------
|
-- ------------------------------------------------------------
|
if ((execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = funct3_sll_c) and
|
if (decode_aux.is_bitmanip_imm = '1') then -- bit manipulation
|
|
if (CPU_EXTENSION_RISCV_Zbb = false) then -- not implemented
|
|
illegal_instruction <= '1';
|
|
end if;
|
|
elsif ((execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = funct3_sll_c) and
|
(execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) /= "0000000")) or -- shift logical left
|
(execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) /= "0000000")) or -- shift logical left
|
((execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = funct3_sr_c) and
|
((execute_engine.i_reg(instr_funct3_msb_c downto instr_funct3_lsb_c) = funct3_sr_c) and
|
((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) /= "0000000") and
|
((execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) /= "0000000") and
|
(execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) /= "0100000"))) then -- shift right
|
(execute_engine.i_reg(instr_funct7_msb_c downto instr_funct7_lsb_c) /= "0100000"))) then -- shift right
|
illegal_instruction <= '1';
|
illegal_instruction <= '1';
|
| Line 1542... |
Line 1595... |
-- ecall, ebreak, mret, wfi, dret --
|
-- ecall, ebreak, mret, wfi, dret --
|
elsif (execute_engine.i_reg(instr_rd_msb_c downto instr_rd_lsb_c) = "00000") and
|
elsif (execute_engine.i_reg(instr_rd_msb_c downto instr_rd_lsb_c) = "00000") and
|
(execute_engine.i_reg(instr_rs1_msb_c downto instr_rs1_lsb_c) = "00000") then
|
(execute_engine.i_reg(instr_rs1_msb_c downto instr_rs1_lsb_c) = "00000") then
|
if (execute_engine.i_reg(instr_funct12_msb_c downto instr_funct12_lsb_c) = funct12_ecall_c) or -- ECALL
|
if (execute_engine.i_reg(instr_funct12_msb_c downto instr_funct12_lsb_c) = funct12_ecall_c) or -- ECALL
|
(execute_engine.i_reg(instr_funct12_msb_c downto instr_funct12_lsb_c) = funct12_ebreak_c) or -- EBREAK
|
(execute_engine.i_reg(instr_funct12_msb_c downto instr_funct12_lsb_c) = funct12_ebreak_c) or -- EBREAK
|
((execute_engine.i_reg(instr_funct12_msb_c downto instr_funct12_lsb_c) = funct12_mret_c)and (CPU_EXTENSION_RISCV_U = true) and (csr.priv_m_mode = '1')) or -- MRET (only allowed in M-mode)
|
((execute_engine.i_reg(instr_funct12_msb_c downto instr_funct12_lsb_c) = funct12_mret_c) and (csr.priv_m_mode = '1')) or -- MRET (only allowed in M-mode)
|
((execute_engine.i_reg(instr_funct12_msb_c downto instr_funct12_lsb_c) = (funct12_dret_c)) and (CPU_EXTENSION_RISCV_DEBUG = true) and (debug_ctrl.running = '1')) or -- DRET
|
((execute_engine.i_reg(instr_funct12_msb_c downto instr_funct12_lsb_c) = funct12_dret_c) and (CPU_EXTENSION_RISCV_DEBUG = true) and (debug_ctrl.running = '1')) or -- DRET
|
((execute_engine.i_reg(instr_funct12_msb_c downto instr_funct12_lsb_c) = funct12_wfi_c) and ((csr.priv_m_mode = '1') or (csr.mstatus_tw = '0'))) then -- WFI allowed in M-mode or if mstatus.TW=0
|
((execute_engine.i_reg(instr_funct12_msb_c downto instr_funct12_lsb_c) = funct12_wfi_c) and ((csr.priv_m_mode = '1') or (csr.mstatus_tw = '0'))) then -- WFI allowed in M-mode or if mstatus.TW=0
|
illegal_instruction <= '0';
|
illegal_instruction <= '0';
|
else
|
else
|
illegal_instruction <= '1';
|
illegal_instruction <= '1';
|
end if;
|
end if;
|
| Line 1565... |
Line 1618... |
illegal_instruction <= '1';
|
illegal_instruction <= '1';
|
end if;
|
end if;
|
|
|
when opcode_fop_c => -- floating point operations - single/dual operands
|
when opcode_fop_c => -- floating point operations - single/dual operands
|
-- ------------------------------------------------------------
|
-- ------------------------------------------------------------
|
if (CPU_EXTENSION_RISCV_Zfinx = true) and (csr.mstatus_fs = '1') and -- F extension implemented and enabled
|
if (CPU_EXTENSION_RISCV_Zfinx = true) and -- F extension implemented
|
(execute_engine.i_reg(instr_funct7_lsb_c+1 downto instr_funct7_lsb_c) = float_single_c) and -- single-precision operations only
|
(execute_engine.i_reg(instr_funct7_lsb_c+1 downto instr_funct7_lsb_c) = float_single_c) and -- single-precision operations only
|
(decode_aux.is_float_op = '1') then -- is correct/supported floating-point instruction
|
(decode_aux.is_float_op = '1') then -- is correct/supported floating-point instruction
|
illegal_instruction <= '0';
|
illegal_instruction <= '0';
|
else
|
else
|
illegal_instruction <= '1';
|
illegal_instruction <= '1';
|
| Line 1601... |
Line 1654... |
trap_controller: process(rstn_i, clk_i)
|
trap_controller: process(rstn_i, clk_i)
|
variable mode_m_v, mode_u_v : std_ulogic;
|
variable mode_m_v, mode_u_v : std_ulogic;
|
begin
|
begin
|
if (rstn_i = '0') then
|
if (rstn_i = '0') then
|
trap_ctrl.exc_buf <= (others => '0');
|
trap_ctrl.exc_buf <= (others => '0');
|
trap_ctrl.exc_buf(exception_db_break_c) <= '0'; -- enter debug mode
|
|
trap_ctrl.irq_buf <= (others => def_rst_val_c);
|
trap_ctrl.irq_buf <= (others => def_rst_val_c);
|
trap_ctrl.irq_buf(interrupt_nm_irq_c) <= '0'; -- NMI
|
trap_ctrl.irq_buf(interrupt_nm_irq_c) <= '0'; -- NMI
|
trap_ctrl.irq_buf(interrupt_db_halt_c) <= '0'; -- enter debug mode
|
trap_ctrl.irq_buf(interrupt_db_halt_c) <= '0'; -- enter debug mode
|
trap_ctrl.irq_buf(interrupt_db_step_c) <= '0'; -- enter debug mode
|
trap_ctrl.irq_buf(interrupt_db_step_c) <= '0'; -- enter debug mode
|
trap_ctrl.exc_ack <= '0';
|
trap_ctrl.exc_ack <= '0';
|
| Line 1920... |
Line 1972... |
-- see: https://forums.xilinx.com/t5/General-Technical-Discussion/quot-Don-t-care-quot-reset-value/td-p/412845
|
-- see: https://forums.xilinx.com/t5/General-Technical-Discussion/quot-Don-t-care-quot-reset-value/td-p/412845
|
if (rstn_i = '0') then
|
if (rstn_i = '0') then
|
csr.we <= '0';
|
csr.we <= '0';
|
--
|
--
|
csr.mstatus_mie <= '0';
|
csr.mstatus_mie <= '0';
|
csr.mstatus_fs <= '0';
|
|
csr.mstatus_mpie <= '0';
|
csr.mstatus_mpie <= '0';
|
csr.mstatus_mpp <= (others => '0');
|
csr.mstatus_mpp <= (others => '0');
|
csr.mstatus_tw <= '0';
|
csr.mstatus_tw <= '0';
|
csr.privilege <= priv_mode_m_c; -- start in MACHINE mode
|
csr.privilege <= priv_mode_m_c; -- start in MACHINE mode
|
csr.mie_msie <= def_rst_val_c;
|
csr.mie_msie <= def_rst_val_c;
|
| Line 1988... |
Line 2039... |
end if;
|
end if;
|
end if;
|
end if;
|
|
|
-- machine trap setup --
|
-- machine trap setup --
|
-- --------------------------------------------------------------------
|
-- --------------------------------------------------------------------
|
if (csr.addr(11 downto 4) = csr_class_setup_c) then -- trap setup CSR class
|
if (csr.addr(11 downto 3) = csr_class_setup_c) then -- trap setup CSR class
|
-- R/W: mstatus - machine status register --
|
-- R/W: mstatus - machine status register --
|
if (csr.addr(3 downto 0) = csr_mstatus_c(3 downto 0)) then
|
if (csr.addr(2 downto 0) = csr_mstatus_c(2 downto 0)) then
|
csr.mstatus_mie <= csr.wdata(03);
|
csr.mstatus_mie <= csr.wdata(03);
|
csr.mstatus_mpie <= csr.wdata(07);
|
csr.mstatus_mpie <= csr.wdata(07);
|
if (CPU_EXTENSION_RISCV_U = true) then -- user mode implemented
|
if (CPU_EXTENSION_RISCV_U = true) then -- user mode implemented
|
csr.mstatus_mpp(0) <= csr.wdata(11) or csr.wdata(12);
|
csr.mstatus_mpp(0) <= csr.wdata(11) or csr.wdata(12);
|
csr.mstatus_mpp(1) <= csr.wdata(11) or csr.wdata(12);
|
csr.mstatus_mpp(1) <= csr.wdata(11) or csr.wdata(12);
|
csr.mstatus_tw <= csr.wdata(21);
|
csr.mstatus_tw <= csr.wdata(21);
|
end if;
|
end if;
|
if (CPU_EXTENSION_RISCV_Zfinx = true) then -- FPU implemented
|
|
csr.mstatus_fs <= csr.wdata(14) or csr.wdata(13);
|
|
end if;
|
|
end if;
|
end if;
|
-- R/W: mie - machine interrupt enable register --
|
-- R/W: mie - machine interrupt enable register --
|
if (csr.addr(3 downto 0) = csr_mie_c(3 downto 0)) then
|
if (csr.addr(2 downto 0) = csr_mie_c(2 downto 0)) then
|
csr.mie_msie <= csr.wdata(03); -- machine SW IRQ enable
|
csr.mie_msie <= csr.wdata(03); -- machine SW IRQ enable
|
csr.mie_mtie <= csr.wdata(07); -- machine TIMER IRQ enable
|
csr.mie_mtie <= csr.wdata(07); -- machine TIMER IRQ enable
|
csr.mie_meie <= csr.wdata(11); -- machine EXT IRQ enable
|
csr.mie_meie <= csr.wdata(11); -- machine EXT IRQ enable
|
for i in 0 to 15 loop -- fast interrupt channels 0..15
|
for i in 0 to 15 loop -- fast interrupt channels 0..15
|
csr.mie_firqe(i) <= csr.wdata(16+i);
|
csr.mie_firqe(i) <= csr.wdata(16+i);
|
end loop; -- i
|
end loop; -- i
|
end if;
|
end if;
|
-- R/W: mtvec - machine trap-handler base address (for ALL exceptions) --
|
-- R/W: mtvec - machine trap-handler base address (for ALL exceptions) --
|
if (csr.addr(3 downto 0) = csr_mtvec_c(3 downto 0)) then
|
if (csr.addr(2 downto 0) = csr_mtvec_c(2 downto 0)) then
|
csr.mtvec <= csr.wdata(data_width_c-1 downto 2) & "00"; -- mtvec.MODE=0
|
csr.mtvec <= csr.wdata(data_width_c-1 downto 2) & "00"; -- mtvec.MODE=0
|
end if;
|
end if;
|
-- R/W: machine counter enable register --
|
-- R/W: machine counter enable register --
|
if (CPU_EXTENSION_RISCV_U = true) then -- this CSR is hardwired to zero if user mode is not implemented
|
if (CPU_EXTENSION_RISCV_U = true) then -- this CSR is hardwired to zero if user mode is not implemented
|
if (csr.addr(3 downto 0) = csr_mcounteren_c(3 downto 0)) then
|
if (csr.addr(2 downto 0) = csr_mcounteren_c(2 downto 0)) then
|
csr.mcounteren_cy <= csr.wdata(0); -- enable user-level access to cycle[h]
|
csr.mcounteren_cy <= csr.wdata(0); -- enable user-level access to cycle[h]
|
csr.mcounteren_tm <= csr.wdata(1); -- enable user-level access to time[h]
|
csr.mcounteren_tm <= csr.wdata(1); -- enable user-level access to time[h]
|
csr.mcounteren_ir <= csr.wdata(2); -- enable user-level access to instret[h]
|
csr.mcounteren_ir <= csr.wdata(2); -- enable user-level access to instret[h]
|
end if;
|
end if;
|
end if;
|
end if;
|
end if;
|
end if;
|
|
|
-- machine trap handling --
|
-- machine trap handling --
|
-- --------------------------------------------------------------------
|
-- --------------------------------------------------------------------
|
if (csr.addr(11 downto 4) = csr_class_trap_c) then -- machine trap handling CSR class
|
if (csr.addr(11 downto 3) = csr_class_trap_c) then -- machine trap handling CSR class
|
-- R/W: mscratch - machine scratch register --
|
-- R/W: mscratch - machine scratch register --
|
if (csr.addr(3 downto 0) = csr_mscratch_c(3 downto 0)) then
|
if (csr.addr(2 downto 0) = csr_mscratch_c(2 downto 0)) then
|
csr.mscratch <= csr.wdata;
|
csr.mscratch <= csr.wdata;
|
end if;
|
end if;
|
-- R/W: mepc - machine exception program counter --
|
-- R/W: mepc - machine exception program counter --
|
if (csr.addr(3 downto 0) = csr_mepc_c(3 downto 0)) then
|
if (csr.addr(2 downto 0) = csr_mepc_c(2 downto 0)) then
|
csr.mepc <= csr.wdata(data_width_c-1 downto 1) & '0';
|
csr.mepc <= csr.wdata(data_width_c-1 downto 1) & '0';
|
end if;
|
end if;
|
-- R/W: mcause - machine trap cause --
|
-- R/W: mcause - machine trap cause --
|
if (csr.addr(3 downto 0) = csr_mcause_c(3 downto 0)) then
|
if (csr.addr(2 downto 0) = csr_mcause_c(2 downto 0)) then
|
csr.mcause(csr.mcause'left) <= csr.wdata(31); -- 1: interrupt, 0: exception
|
csr.mcause(csr.mcause'left) <= csr.wdata(31); -- 1: interrupt, 0: exception
|
csr.mcause(4 downto 0) <= csr.wdata(4 downto 0); -- identifier
|
csr.mcause(4 downto 0) <= csr.wdata(4 downto 0); -- identifier
|
end if;
|
end if;
|
end if;
|
end if;
|
|
|
| Line 2085... |
Line 2133... |
if (csr.addr(11 downto 5) = csr_cnt_setup_c) then -- counter configuration CSR class
|
if (csr.addr(11 downto 5) = csr_cnt_setup_c) then -- counter configuration CSR class
|
-- R/W: mcountinhibit - machine counter-inhibit register --
|
-- R/W: mcountinhibit - machine counter-inhibit register --
|
if (csr.addr(4 downto 0) = csr_mcountinhibit_c(4 downto 0)) then
|
if (csr.addr(4 downto 0) = csr_mcountinhibit_c(4 downto 0)) then
|
csr.mcountinhibit_cy <= csr.wdata(0); -- enable auto-increment of [m]cycle[h] counter
|
csr.mcountinhibit_cy <= csr.wdata(0); -- enable auto-increment of [m]cycle[h] counter
|
csr.mcountinhibit_ir <= csr.wdata(2); -- enable auto-increment of [m]instret[h] counter
|
csr.mcountinhibit_ir <= csr.wdata(2); -- enable auto-increment of [m]instret[h] counter
|
|
if (HPM_NUM_CNTS > 0) then -- any HPMs available?
|
csr.mcountinhibit_hpm <= csr.wdata(csr.mcountinhibit_hpm'left+3 downto 3); -- enable auto-increment of [m]hpmcounter*[h] counter
|
csr.mcountinhibit_hpm <= csr.wdata(csr.mcountinhibit_hpm'left+3 downto 3); -- enable auto-increment of [m]hpmcounter*[h] counter
|
end if;
|
end if;
|
|
end if;
|
-- machine performance-monitors event selector --
|
-- machine performance-monitors event selector --
|
if (HPM_NUM_CNTS > 0) then
|
if (HPM_NUM_CNTS > 0) then
|
for i in 0 to HPM_NUM_CNTS-1 loop
|
for i in 0 to HPM_NUM_CNTS-1 loop
|
if (csr.addr(4 downto 0) = std_ulogic_vector(to_unsigned(i+3, 5))) then
|
if (csr.addr(4 downto 0) = std_ulogic_vector(to_unsigned(i+3, 5))) then
|
csr.mhpmevent(i) <= csr.wdata(csr.mhpmevent(i)'left downto 0);
|
csr.mhpmevent(i) <= csr.wdata(csr.mhpmevent(i)'left downto 0);
|
| Line 2261... |
Line 2311... |
csr.mcountinhibit_ir <= '0';
|
csr.mcountinhibit_ir <= '0';
|
end if;
|
end if;
|
|
|
-- floating-point extension disabled --
|
-- floating-point extension disabled --
|
if (CPU_EXTENSION_RISCV_Zfinx = false) then
|
if (CPU_EXTENSION_RISCV_Zfinx = false) then
|
csr.mstatus_fs <= '0';
|
|
csr.fflags <= (others => '0');
|
csr.fflags <= (others => '0');
|
csr.frm <= (others => '0');
|
csr.frm <= (others => '0');
|
end if;
|
end if;
|
|
|
-- debug mode disabled --
|
-- debug mode disabled --
|
| Line 2509... |
Line 2558... |
when csr_mstatus_c => -- mstatus (r/w): machine status register
|
when csr_mstatus_c => -- mstatus (r/w): machine status register
|
csr.rdata(03) <= csr.mstatus_mie; -- MIE
|
csr.rdata(03) <= csr.mstatus_mie; -- MIE
|
csr.rdata(07) <= csr.mstatus_mpie; -- MPIE
|
csr.rdata(07) <= csr.mstatus_mpie; -- MPIE
|
csr.rdata(11) <= csr.mstatus_mpp(0); -- MPP: machine previous privilege mode low
|
csr.rdata(11) <= csr.mstatus_mpp(0); -- MPP: machine previous privilege mode low
|
csr.rdata(12) <= csr.mstatus_mpp(1); -- MPP: machine previous privilege mode high
|
csr.rdata(12) <= csr.mstatus_mpp(1); -- MPP: machine previous privilege mode high
|
csr.rdata(13) <= csr.mstatus_fs; -- FS(0): FPU status - OFF or DIRTY
|
|
csr.rdata(14) <= csr.mstatus_fs; -- FS(1): FPU status - OFF or DIRTY
|
|
csr.rdata(21) <= csr.mstatus_tw; -- TW: WFI timeout wait
|
csr.rdata(21) <= csr.mstatus_tw; -- TW: WFI timeout wait
|
csr.rdata(31) <= csr.mstatus_fs; -- SD: state dirty (only FPU yet)
|
|
when csr_misa_c => -- misa (r/-): ISA and extensions
|
when csr_misa_c => -- misa (r/-): ISA and extensions
|
csr.rdata(00) <= bool_to_ulogic_f(CPU_EXTENSION_RISCV_A); -- A CPU extension
|
csr.rdata(00) <= bool_to_ulogic_f(CPU_EXTENSION_RISCV_A); -- A CPU extension
|
csr.rdata(02) <= bool_to_ulogic_f(CPU_EXTENSION_RISCV_C); -- C CPU extension
|
csr.rdata(02) <= bool_to_ulogic_f(CPU_EXTENSION_RISCV_C); -- C CPU extension
|
csr.rdata(04) <= bool_to_ulogic_f(CPU_EXTENSION_RISCV_E); -- E CPU extension
|
csr.rdata(04) <= bool_to_ulogic_f(CPU_EXTENSION_RISCV_E); -- E CPU extension
|
csr.rdata(08) <= not bool_to_ulogic_f(CPU_EXTENSION_RISCV_E); -- I CPU extension (if not E)
|
csr.rdata(08) <= not bool_to_ulogic_f(CPU_EXTENSION_RISCV_E); -- I CPU extension (if not E)
|
| Line 2560... |
Line 2606... |
csr.rdata(11) <= trap_ctrl.irq_buf(interrupt_mext_irq_c);
|
csr.rdata(11) <= trap_ctrl.irq_buf(interrupt_mext_irq_c);
|
for i in 0 to 15 loop -- fast interrupt channels 0..15 pending
|
for i in 0 to 15 loop -- fast interrupt channels 0..15 pending
|
csr.rdata(16+i) <= trap_ctrl.irq_buf(interrupt_firq_0_c+i);
|
csr.rdata(16+i) <= trap_ctrl.irq_buf(interrupt_firq_0_c+i);
|
end loop; -- i
|
end loop; -- i
|
|
|
-- physical memory protection - configuration --
|
-- physical memory protection - configuration (r/w) --
|
-- --------------------------------------------------------------------
|
-- --------------------------------------------------------------------
|
when csr_pmpcfg0_c => if (PMP_NUM_REGIONS > 00) then csr.rdata <= csr.pmpcfg_rd(03) & csr.pmpcfg_rd(02) & csr.pmpcfg_rd(01) & csr.pmpcfg_rd(00); else NULL; end if; -- R/W: pmpcfg0
|
when csr_pmpcfg0_c => if (PMP_NUM_REGIONS > 00) then csr.rdata <= csr.pmpcfg_rd(03) & csr.pmpcfg_rd(02) & csr.pmpcfg_rd(01) & csr.pmpcfg_rd(00); else NULL; end if;
|
when csr_pmpcfg1_c => if (PMP_NUM_REGIONS > 03) then csr.rdata <= csr.pmpcfg_rd(07) & csr.pmpcfg_rd(06) & csr.pmpcfg_rd(05) & csr.pmpcfg_rd(04); else NULL; end if; -- R/W: pmpcfg1
|
when csr_pmpcfg1_c => if (PMP_NUM_REGIONS > 03) then csr.rdata <= csr.pmpcfg_rd(07) & csr.pmpcfg_rd(06) & csr.pmpcfg_rd(05) & csr.pmpcfg_rd(04); else NULL; end if;
|
when csr_pmpcfg2_c => if (PMP_NUM_REGIONS > 07) then csr.rdata <= csr.pmpcfg_rd(11) & csr.pmpcfg_rd(10) & csr.pmpcfg_rd(09) & csr.pmpcfg_rd(08); else NULL; end if; -- R/W: pmpcfg2
|
when csr_pmpcfg2_c => if (PMP_NUM_REGIONS > 07) then csr.rdata <= csr.pmpcfg_rd(11) & csr.pmpcfg_rd(10) & csr.pmpcfg_rd(09) & csr.pmpcfg_rd(08); else NULL; end if;
|
when csr_pmpcfg3_c => if (PMP_NUM_REGIONS > 11) then csr.rdata <= csr.pmpcfg_rd(15) & csr.pmpcfg_rd(14) & csr.pmpcfg_rd(13) & csr.pmpcfg_rd(12); else NULL; end if; -- R/W: pmpcfg3
|
when csr_pmpcfg3_c => if (PMP_NUM_REGIONS > 11) then csr.rdata <= csr.pmpcfg_rd(15) & csr.pmpcfg_rd(14) & csr.pmpcfg_rd(13) & csr.pmpcfg_rd(12); else NULL; end if;
|
when csr_pmpcfg4_c => if (PMP_NUM_REGIONS > 15) then csr.rdata <= csr.pmpcfg_rd(19) & csr.pmpcfg_rd(18) & csr.pmpcfg_rd(17) & csr.pmpcfg_rd(16); else NULL; end if; -- R/W: pmpcfg4
|
when csr_pmpcfg4_c => if (PMP_NUM_REGIONS > 15) then csr.rdata <= csr.pmpcfg_rd(19) & csr.pmpcfg_rd(18) & csr.pmpcfg_rd(17) & csr.pmpcfg_rd(16); else NULL; end if;
|
when csr_pmpcfg5_c => if (PMP_NUM_REGIONS > 19) then csr.rdata <= csr.pmpcfg_rd(23) & csr.pmpcfg_rd(22) & csr.pmpcfg_rd(21) & csr.pmpcfg_rd(20); else NULL; end if; -- R/W: pmpcfg5
|
when csr_pmpcfg5_c => if (PMP_NUM_REGIONS > 19) then csr.rdata <= csr.pmpcfg_rd(23) & csr.pmpcfg_rd(22) & csr.pmpcfg_rd(21) & csr.pmpcfg_rd(20); else NULL; end if;
|
when csr_pmpcfg6_c => if (PMP_NUM_REGIONS > 23) then csr.rdata <= csr.pmpcfg_rd(27) & csr.pmpcfg_rd(26) & csr.pmpcfg_rd(25) & csr.pmpcfg_rd(24); else NULL; end if; -- R/W: pmpcfg6
|
when csr_pmpcfg6_c => if (PMP_NUM_REGIONS > 23) then csr.rdata <= csr.pmpcfg_rd(27) & csr.pmpcfg_rd(26) & csr.pmpcfg_rd(25) & csr.pmpcfg_rd(24); else NULL; end if;
|
when csr_pmpcfg7_c => if (PMP_NUM_REGIONS > 27) then csr.rdata <= csr.pmpcfg_rd(31) & csr.pmpcfg_rd(30) & csr.pmpcfg_rd(29) & csr.pmpcfg_rd(28); else NULL; end if; -- R/W: pmpcfg7
|
when csr_pmpcfg7_c => if (PMP_NUM_REGIONS > 27) then csr.rdata <= csr.pmpcfg_rd(31) & csr.pmpcfg_rd(30) & csr.pmpcfg_rd(29) & csr.pmpcfg_rd(28); else NULL; end if;
|
when csr_pmpcfg8_c => if (PMP_NUM_REGIONS > 31) then csr.rdata <= csr.pmpcfg_rd(35) & csr.pmpcfg_rd(34) & csr.pmpcfg_rd(33) & csr.pmpcfg_rd(32); else NULL; end if; -- R/W: pmpcfg8
|
when csr_pmpcfg8_c => if (PMP_NUM_REGIONS > 31) then csr.rdata <= csr.pmpcfg_rd(35) & csr.pmpcfg_rd(34) & csr.pmpcfg_rd(33) & csr.pmpcfg_rd(32); else NULL; end if;
|
when csr_pmpcfg9_c => if (PMP_NUM_REGIONS > 35) then csr.rdata <= csr.pmpcfg_rd(39) & csr.pmpcfg_rd(38) & csr.pmpcfg_rd(37) & csr.pmpcfg_rd(36); else NULL; end if; -- R/W: pmpcfg9
|
when csr_pmpcfg9_c => if (PMP_NUM_REGIONS > 35) then csr.rdata <= csr.pmpcfg_rd(39) & csr.pmpcfg_rd(38) & csr.pmpcfg_rd(37) & csr.pmpcfg_rd(36); else NULL; end if;
|
when csr_pmpcfg10_c => if (PMP_NUM_REGIONS > 39) then csr.rdata <= csr.pmpcfg_rd(43) & csr.pmpcfg_rd(42) & csr.pmpcfg_rd(41) & csr.pmpcfg_rd(40); else NULL; end if; -- R/W: pmpcfg10
|
when csr_pmpcfg10_c => if (PMP_NUM_REGIONS > 39) then csr.rdata <= csr.pmpcfg_rd(43) & csr.pmpcfg_rd(42) & csr.pmpcfg_rd(41) & csr.pmpcfg_rd(40); else NULL; end if;
|
when csr_pmpcfg11_c => if (PMP_NUM_REGIONS > 43) then csr.rdata <= csr.pmpcfg_rd(47) & csr.pmpcfg_rd(46) & csr.pmpcfg_rd(45) & csr.pmpcfg_rd(44); else NULL; end if; -- R/W: pmpcfg11
|
when csr_pmpcfg11_c => if (PMP_NUM_REGIONS > 43) then csr.rdata <= csr.pmpcfg_rd(47) & csr.pmpcfg_rd(46) & csr.pmpcfg_rd(45) & csr.pmpcfg_rd(44); else NULL; end if;
|
when csr_pmpcfg12_c => if (PMP_NUM_REGIONS > 47) then csr.rdata <= csr.pmpcfg_rd(51) & csr.pmpcfg_rd(50) & csr.pmpcfg_rd(49) & csr.pmpcfg_rd(48); else NULL; end if; -- R/W: pmpcfg12
|
when csr_pmpcfg12_c => if (PMP_NUM_REGIONS > 47) then csr.rdata <= csr.pmpcfg_rd(51) & csr.pmpcfg_rd(50) & csr.pmpcfg_rd(49) & csr.pmpcfg_rd(48); else NULL; end if;
|
when csr_pmpcfg13_c => if (PMP_NUM_REGIONS > 51) then csr.rdata <= csr.pmpcfg_rd(55) & csr.pmpcfg_rd(54) & csr.pmpcfg_rd(53) & csr.pmpcfg_rd(52); else NULL; end if; -- R/W: pmpcfg13
|
when csr_pmpcfg13_c => if (PMP_NUM_REGIONS > 51) then csr.rdata <= csr.pmpcfg_rd(55) & csr.pmpcfg_rd(54) & csr.pmpcfg_rd(53) & csr.pmpcfg_rd(52); else NULL; end if;
|
when csr_pmpcfg14_c => if (PMP_NUM_REGIONS > 55) then csr.rdata <= csr.pmpcfg_rd(59) & csr.pmpcfg_rd(58) & csr.pmpcfg_rd(57) & csr.pmpcfg_rd(56); else NULL; end if; -- R/W: pmpcfg14
|
when csr_pmpcfg14_c => if (PMP_NUM_REGIONS > 55) then csr.rdata <= csr.pmpcfg_rd(59) & csr.pmpcfg_rd(58) & csr.pmpcfg_rd(57) & csr.pmpcfg_rd(56); else NULL; end if;
|
when csr_pmpcfg15_c => if (PMP_NUM_REGIONS > 59) then csr.rdata <= csr.pmpcfg_rd(63) & csr.pmpcfg_rd(62) & csr.pmpcfg_rd(61) & csr.pmpcfg_rd(60); else NULL; end if; -- R/W: pmpcfg15
|
when csr_pmpcfg15_c => if (PMP_NUM_REGIONS > 59) then csr.rdata <= csr.pmpcfg_rd(63) & csr.pmpcfg_rd(62) & csr.pmpcfg_rd(61) & csr.pmpcfg_rd(60); else NULL; end if;
|
|
|
-- physical memory protection - addresses --
|
-- physical memory protection - addresses (r/w) --
|
-- --------------------------------------------------------------------
|
-- --------------------------------------------------------------------
|
when csr_pmpaddr0_c => if (PMP_NUM_REGIONS > 00) then csr.rdata <= csr.pmpaddr(00); else NULL; end if; -- R/W: pmpaddr0
|
when csr_pmpaddr0_c => if (PMP_NUM_REGIONS > 00) then csr.rdata <= csr.pmpaddr(00); else NULL; end if;
|
when csr_pmpaddr1_c => if (PMP_NUM_REGIONS > 01) then csr.rdata <= csr.pmpaddr(01); else NULL; end if; -- R/W: pmpaddr1
|
when csr_pmpaddr1_c => if (PMP_NUM_REGIONS > 01) then csr.rdata <= csr.pmpaddr(01); else NULL; end if;
|
when csr_pmpaddr2_c => if (PMP_NUM_REGIONS > 02) then csr.rdata <= csr.pmpaddr(02); else NULL; end if; -- R/W: pmpaddr2
|
when csr_pmpaddr2_c => if (PMP_NUM_REGIONS > 02) then csr.rdata <= csr.pmpaddr(02); else NULL; end if;
|
when csr_pmpaddr3_c => if (PMP_NUM_REGIONS > 03) then csr.rdata <= csr.pmpaddr(03); else NULL; end if; -- R/W: pmpaddr3
|
when csr_pmpaddr3_c => if (PMP_NUM_REGIONS > 03) then csr.rdata <= csr.pmpaddr(03); else NULL; end if;
|
when csr_pmpaddr4_c => if (PMP_NUM_REGIONS > 04) then csr.rdata <= csr.pmpaddr(04); else NULL; end if; -- R/W: pmpaddr4
|
when csr_pmpaddr4_c => if (PMP_NUM_REGIONS > 04) then csr.rdata <= csr.pmpaddr(04); else NULL; end if;
|
when csr_pmpaddr5_c => if (PMP_NUM_REGIONS > 05) then csr.rdata <= csr.pmpaddr(05); else NULL; end if; -- R/W: pmpaddr5
|
when csr_pmpaddr5_c => if (PMP_NUM_REGIONS > 05) then csr.rdata <= csr.pmpaddr(05); else NULL; end if;
|
when csr_pmpaddr6_c => if (PMP_NUM_REGIONS > 06) then csr.rdata <= csr.pmpaddr(06); else NULL; end if; -- R/W: pmpaddr6
|
when csr_pmpaddr6_c => if (PMP_NUM_REGIONS > 06) then csr.rdata <= csr.pmpaddr(06); else NULL; end if;
|
when csr_pmpaddr7_c => if (PMP_NUM_REGIONS > 07) then csr.rdata <= csr.pmpaddr(07); else NULL; end if; -- R/W: pmpaddr7
|
when csr_pmpaddr7_c => if (PMP_NUM_REGIONS > 07) then csr.rdata <= csr.pmpaddr(07); else NULL; end if;
|
when csr_pmpaddr8_c => if (PMP_NUM_REGIONS > 08) then csr.rdata <= csr.pmpaddr(08); else NULL; end if; -- R/W: pmpaddr8
|
when csr_pmpaddr8_c => if (PMP_NUM_REGIONS > 08) then csr.rdata <= csr.pmpaddr(08); else NULL; end if;
|
when csr_pmpaddr9_c => if (PMP_NUM_REGIONS > 09) then csr.rdata <= csr.pmpaddr(09); else NULL; end if; -- R/W: pmpaddr9
|
when csr_pmpaddr9_c => if (PMP_NUM_REGIONS > 09) then csr.rdata <= csr.pmpaddr(09); else NULL; end if;
|
when csr_pmpaddr10_c => if (PMP_NUM_REGIONS > 10) then csr.rdata <= csr.pmpaddr(10); else NULL; end if; -- R/W: pmpaddr10
|
when csr_pmpaddr10_c => if (PMP_NUM_REGIONS > 10) then csr.rdata <= csr.pmpaddr(10); else NULL; end if;
|
when csr_pmpaddr11_c => if (PMP_NUM_REGIONS > 11) then csr.rdata <= csr.pmpaddr(11); else NULL; end if; -- R/W: pmpaddr11
|
when csr_pmpaddr11_c => if (PMP_NUM_REGIONS > 11) then csr.rdata <= csr.pmpaddr(11); else NULL; end if;
|
when csr_pmpaddr12_c => if (PMP_NUM_REGIONS > 12) then csr.rdata <= csr.pmpaddr(12); else NULL; end if; -- R/W: pmpaddr12
|
when csr_pmpaddr12_c => if (PMP_NUM_REGIONS > 12) then csr.rdata <= csr.pmpaddr(12); else NULL; end if;
|
when csr_pmpaddr13_c => if (PMP_NUM_REGIONS > 13) then csr.rdata <= csr.pmpaddr(13); else NULL; end if; -- R/W: pmpaddr13
|
when csr_pmpaddr13_c => if (PMP_NUM_REGIONS > 13) then csr.rdata <= csr.pmpaddr(13); else NULL; end if;
|
when csr_pmpaddr14_c => if (PMP_NUM_REGIONS > 14) then csr.rdata <= csr.pmpaddr(14); else NULL; end if; -- R/W: pmpaddr14
|
when csr_pmpaddr14_c => if (PMP_NUM_REGIONS > 14) then csr.rdata <= csr.pmpaddr(14); else NULL; end if;
|
when csr_pmpaddr15_c => if (PMP_NUM_REGIONS > 15) then csr.rdata <= csr.pmpaddr(15); else NULL; end if; -- R/W: pmpaddr15
|
when csr_pmpaddr15_c => if (PMP_NUM_REGIONS > 15) then csr.rdata <= csr.pmpaddr(15); else NULL; end if;
|
when csr_pmpaddr16_c => if (PMP_NUM_REGIONS > 16) then csr.rdata <= csr.pmpaddr(16); else NULL; end if; -- R/W: pmpaddr16
|
when csr_pmpaddr16_c => if (PMP_NUM_REGIONS > 16) then csr.rdata <= csr.pmpaddr(16); else NULL; end if;
|
when csr_pmpaddr17_c => if (PMP_NUM_REGIONS > 17) then csr.rdata <= csr.pmpaddr(17); else NULL; end if; -- R/W: pmpaddr17
|
when csr_pmpaddr17_c => if (PMP_NUM_REGIONS > 17) then csr.rdata <= csr.pmpaddr(17); else NULL; end if;
|
when csr_pmpaddr18_c => if (PMP_NUM_REGIONS > 18) then csr.rdata <= csr.pmpaddr(18); else NULL; end if; -- R/W: pmpaddr18
|
when csr_pmpaddr18_c => if (PMP_NUM_REGIONS > 18) then csr.rdata <= csr.pmpaddr(18); else NULL; end if;
|
when csr_pmpaddr19_c => if (PMP_NUM_REGIONS > 19) then csr.rdata <= csr.pmpaddr(19); else NULL; end if; -- R/W: pmpaddr19
|
when csr_pmpaddr19_c => if (PMP_NUM_REGIONS > 19) then csr.rdata <= csr.pmpaddr(19); else NULL; end if;
|
when csr_pmpaddr20_c => if (PMP_NUM_REGIONS > 20) then csr.rdata <= csr.pmpaddr(20); else NULL; end if; -- R/W: pmpaddr20
|
when csr_pmpaddr20_c => if (PMP_NUM_REGIONS > 20) then csr.rdata <= csr.pmpaddr(20); else NULL; end if;
|
when csr_pmpaddr21_c => if (PMP_NUM_REGIONS > 21) then csr.rdata <= csr.pmpaddr(21); else NULL; end if; -- R/W: pmpaddr21
|
when csr_pmpaddr21_c => if (PMP_NUM_REGIONS > 21) then csr.rdata <= csr.pmpaddr(21); else NULL; end if;
|
when csr_pmpaddr22_c => if (PMP_NUM_REGIONS > 22) then csr.rdata <= csr.pmpaddr(22); else NULL; end if; -- R/W: pmpaddr22
|
when csr_pmpaddr22_c => if (PMP_NUM_REGIONS > 22) then csr.rdata <= csr.pmpaddr(22); else NULL; end if;
|
when csr_pmpaddr23_c => if (PMP_NUM_REGIONS > 23) then csr.rdata <= csr.pmpaddr(23); else NULL; end if; -- R/W: pmpaddr23
|
when csr_pmpaddr23_c => if (PMP_NUM_REGIONS > 23) then csr.rdata <= csr.pmpaddr(23); else NULL; end if;
|
when csr_pmpaddr24_c => if (PMP_NUM_REGIONS > 24) then csr.rdata <= csr.pmpaddr(24); else NULL; end if; -- R/W: pmpaddr24
|
when csr_pmpaddr24_c => if (PMP_NUM_REGIONS > 24) then csr.rdata <= csr.pmpaddr(24); else NULL; end if;
|
when csr_pmpaddr25_c => if (PMP_NUM_REGIONS > 25) then csr.rdata <= csr.pmpaddr(25); else NULL; end if; -- R/W: pmpaddr25
|
when csr_pmpaddr25_c => if (PMP_NUM_REGIONS > 25) then csr.rdata <= csr.pmpaddr(25); else NULL; end if;
|
when csr_pmpaddr26_c => if (PMP_NUM_REGIONS > 26) then csr.rdata <= csr.pmpaddr(26); else NULL; end if; -- R/W: pmpaddr26
|
when csr_pmpaddr26_c => if (PMP_NUM_REGIONS > 26) then csr.rdata <= csr.pmpaddr(26); else NULL; end if;
|
when csr_pmpaddr27_c => if (PMP_NUM_REGIONS > 27) then csr.rdata <= csr.pmpaddr(27); else NULL; end if; -- R/W: pmpaddr27
|
when csr_pmpaddr27_c => if (PMP_NUM_REGIONS > 27) then csr.rdata <= csr.pmpaddr(27); else NULL; end if;
|
when csr_pmpaddr28_c => if (PMP_NUM_REGIONS > 28) then csr.rdata <= csr.pmpaddr(28); else NULL; end if; -- R/W: pmpaddr28
|
when csr_pmpaddr28_c => if (PMP_NUM_REGIONS > 28) then csr.rdata <= csr.pmpaddr(28); else NULL; end if;
|
when csr_pmpaddr29_c => if (PMP_NUM_REGIONS > 29) then csr.rdata <= csr.pmpaddr(29); else NULL; end if; -- R/W: pmpaddr29
|
when csr_pmpaddr29_c => if (PMP_NUM_REGIONS > 29) then csr.rdata <= csr.pmpaddr(29); else NULL; end if;
|
when csr_pmpaddr30_c => if (PMP_NUM_REGIONS > 30) then csr.rdata <= csr.pmpaddr(30); else NULL; end if; -- R/W: pmpaddr30
|
when csr_pmpaddr30_c => if (PMP_NUM_REGIONS > 30) then csr.rdata <= csr.pmpaddr(30); else NULL; end if;
|
when csr_pmpaddr31_c => if (PMP_NUM_REGIONS > 31) then csr.rdata <= csr.pmpaddr(31); else NULL; end if; -- R/W: pmpaddr31
|
when csr_pmpaddr31_c => if (PMP_NUM_REGIONS > 31) then csr.rdata <= csr.pmpaddr(31); else NULL; end if;
|
when csr_pmpaddr32_c => if (PMP_NUM_REGIONS > 32) then csr.rdata <= csr.pmpaddr(32); else NULL; end if; -- R/W: pmpaddr32
|
when csr_pmpaddr32_c => if (PMP_NUM_REGIONS > 32) then csr.rdata <= csr.pmpaddr(32); else NULL; end if;
|
when csr_pmpaddr33_c => if (PMP_NUM_REGIONS > 33) then csr.rdata <= csr.pmpaddr(33); else NULL; end if; -- R/W: pmpaddr33
|
when csr_pmpaddr33_c => if (PMP_NUM_REGIONS > 33) then csr.rdata <= csr.pmpaddr(33); else NULL; end if;
|
when csr_pmpaddr34_c => if (PMP_NUM_REGIONS > 34) then csr.rdata <= csr.pmpaddr(34); else NULL; end if; -- R/W: pmpaddr34
|
when csr_pmpaddr34_c => if (PMP_NUM_REGIONS > 34) then csr.rdata <= csr.pmpaddr(34); else NULL; end if;
|
when csr_pmpaddr35_c => if (PMP_NUM_REGIONS > 35) then csr.rdata <= csr.pmpaddr(35); else NULL; end if; -- R/W: pmpaddr35
|
when csr_pmpaddr35_c => if (PMP_NUM_REGIONS > 35) then csr.rdata <= csr.pmpaddr(35); else NULL; end if;
|
when csr_pmpaddr36_c => if (PMP_NUM_REGIONS > 36) then csr.rdata <= csr.pmpaddr(36); else NULL; end if; -- R/W: pmpaddr36
|
when csr_pmpaddr36_c => if (PMP_NUM_REGIONS > 36) then csr.rdata <= csr.pmpaddr(36); else NULL; end if;
|
when csr_pmpaddr37_c => if (PMP_NUM_REGIONS > 37) then csr.rdata <= csr.pmpaddr(37); else NULL; end if; -- R/W: pmpaddr37
|
when csr_pmpaddr37_c => if (PMP_NUM_REGIONS > 37) then csr.rdata <= csr.pmpaddr(37); else NULL; end if;
|
when csr_pmpaddr38_c => if (PMP_NUM_REGIONS > 38) then csr.rdata <= csr.pmpaddr(38); else NULL; end if; -- R/W: pmpaddr38
|
when csr_pmpaddr38_c => if (PMP_NUM_REGIONS > 38) then csr.rdata <= csr.pmpaddr(38); else NULL; end if;
|
when csr_pmpaddr39_c => if (PMP_NUM_REGIONS > 39) then csr.rdata <= csr.pmpaddr(39); else NULL; end if; -- R/W: pmpaddr39
|
when csr_pmpaddr39_c => if (PMP_NUM_REGIONS > 39) then csr.rdata <= csr.pmpaddr(39); else NULL; end if;
|
when csr_pmpaddr40_c => if (PMP_NUM_REGIONS > 40) then csr.rdata <= csr.pmpaddr(40); else NULL; end if; -- R/W: pmpaddr40
|
when csr_pmpaddr40_c => if (PMP_NUM_REGIONS > 40) then csr.rdata <= csr.pmpaddr(40); else NULL; end if;
|
when csr_pmpaddr41_c => if (PMP_NUM_REGIONS > 41) then csr.rdata <= csr.pmpaddr(41); else NULL; end if; -- R/W: pmpaddr41
|
when csr_pmpaddr41_c => if (PMP_NUM_REGIONS > 41) then csr.rdata <= csr.pmpaddr(41); else NULL; end if;
|
when csr_pmpaddr42_c => if (PMP_NUM_REGIONS > 42) then csr.rdata <= csr.pmpaddr(42); else NULL; end if; -- R/W: pmpaddr42
|
when csr_pmpaddr42_c => if (PMP_NUM_REGIONS > 42) then csr.rdata <= csr.pmpaddr(42); else NULL; end if;
|
when csr_pmpaddr43_c => if (PMP_NUM_REGIONS > 43) then csr.rdata <= csr.pmpaddr(43); else NULL; end if; -- R/W: pmpaddr43
|
when csr_pmpaddr43_c => if (PMP_NUM_REGIONS > 43) then csr.rdata <= csr.pmpaddr(43); else NULL; end if;
|
when csr_pmpaddr44_c => if (PMP_NUM_REGIONS > 44) then csr.rdata <= csr.pmpaddr(44); else NULL; end if; -- R/W: pmpaddr44
|
when csr_pmpaddr44_c => if (PMP_NUM_REGIONS > 44) then csr.rdata <= csr.pmpaddr(44); else NULL; end if;
|
when csr_pmpaddr45_c => if (PMP_NUM_REGIONS > 45) then csr.rdata <= csr.pmpaddr(45); else NULL; end if; -- R/W: pmpaddr45
|
when csr_pmpaddr45_c => if (PMP_NUM_REGIONS > 45) then csr.rdata <= csr.pmpaddr(45); else NULL; end if;
|
when csr_pmpaddr46_c => if (PMP_NUM_REGIONS > 46) then csr.rdata <= csr.pmpaddr(46); else NULL; end if; -- R/W: pmpaddr46
|
when csr_pmpaddr46_c => if (PMP_NUM_REGIONS > 46) then csr.rdata <= csr.pmpaddr(46); else NULL; end if;
|
when csr_pmpaddr47_c => if (PMP_NUM_REGIONS > 47) then csr.rdata <= csr.pmpaddr(47); else NULL; end if; -- R/W: pmpaddr47
|
when csr_pmpaddr47_c => if (PMP_NUM_REGIONS > 47) then csr.rdata <= csr.pmpaddr(47); else NULL; end if;
|
when csr_pmpaddr48_c => if (PMP_NUM_REGIONS > 48) then csr.rdata <= csr.pmpaddr(48); else NULL; end if; -- R/W: pmpaddr48
|
when csr_pmpaddr48_c => if (PMP_NUM_REGIONS > 48) then csr.rdata <= csr.pmpaddr(48); else NULL; end if;
|
when csr_pmpaddr49_c => if (PMP_NUM_REGIONS > 49) then csr.rdata <= csr.pmpaddr(49); else NULL; end if; -- R/W: pmpaddr49
|
when csr_pmpaddr49_c => if (PMP_NUM_REGIONS > 49) then csr.rdata <= csr.pmpaddr(49); else NULL; end if;
|
when csr_pmpaddr50_c => if (PMP_NUM_REGIONS > 50) then csr.rdata <= csr.pmpaddr(50); else NULL; end if; -- R/W: pmpaddr50
|
when csr_pmpaddr50_c => if (PMP_NUM_REGIONS > 50) then csr.rdata <= csr.pmpaddr(50); else NULL; end if;
|
when csr_pmpaddr51_c => if (PMP_NUM_REGIONS > 51) then csr.rdata <= csr.pmpaddr(51); else NULL; end if; -- R/W: pmpaddr51
|
when csr_pmpaddr51_c => if (PMP_NUM_REGIONS > 51) then csr.rdata <= csr.pmpaddr(51); else NULL; end if;
|
when csr_pmpaddr52_c => if (PMP_NUM_REGIONS > 52) then csr.rdata <= csr.pmpaddr(52); else NULL; end if; -- R/W: pmpaddr52
|
when csr_pmpaddr52_c => if (PMP_NUM_REGIONS > 52) then csr.rdata <= csr.pmpaddr(52); else NULL; end if;
|
when csr_pmpaddr53_c => if (PMP_NUM_REGIONS > 53) then csr.rdata <= csr.pmpaddr(53); else NULL; end if; -- R/W: pmpaddr53
|
when csr_pmpaddr53_c => if (PMP_NUM_REGIONS > 53) then csr.rdata <= csr.pmpaddr(53); else NULL; end if;
|
when csr_pmpaddr54_c => if (PMP_NUM_REGIONS > 54) then csr.rdata <= csr.pmpaddr(54); else NULL; end if; -- R/W: pmpaddr54
|
when csr_pmpaddr54_c => if (PMP_NUM_REGIONS > 54) then csr.rdata <= csr.pmpaddr(54); else NULL; end if;
|
when csr_pmpaddr55_c => if (PMP_NUM_REGIONS > 55) then csr.rdata <= csr.pmpaddr(55); else NULL; end if; -- R/W: pmpaddr55
|
when csr_pmpaddr55_c => if (PMP_NUM_REGIONS > 55) then csr.rdata <= csr.pmpaddr(55); else NULL; end if;
|
when csr_pmpaddr56_c => if (PMP_NUM_REGIONS > 56) then csr.rdata <= csr.pmpaddr(56); else NULL; end if; -- R/W: pmpaddr56
|
when csr_pmpaddr56_c => if (PMP_NUM_REGIONS > 56) then csr.rdata <= csr.pmpaddr(56); else NULL; end if;
|
when csr_pmpaddr57_c => if (PMP_NUM_REGIONS > 57) then csr.rdata <= csr.pmpaddr(57); else NULL; end if; -- R/W: pmpaddr57
|
when csr_pmpaddr57_c => if (PMP_NUM_REGIONS > 57) then csr.rdata <= csr.pmpaddr(57); else NULL; end if;
|
when csr_pmpaddr58_c => if (PMP_NUM_REGIONS > 58) then csr.rdata <= csr.pmpaddr(58); else NULL; end if; -- R/W: pmpaddr58
|
when csr_pmpaddr58_c => if (PMP_NUM_REGIONS > 58) then csr.rdata <= csr.pmpaddr(58); else NULL; end if;
|
when csr_pmpaddr59_c => if (PMP_NUM_REGIONS > 59) then csr.rdata <= csr.pmpaddr(59); else NULL; end if; -- R/W: pmpaddr59
|
when csr_pmpaddr59_c => if (PMP_NUM_REGIONS > 59) then csr.rdata <= csr.pmpaddr(59); else NULL; end if;
|
when csr_pmpaddr60_c => if (PMP_NUM_REGIONS > 60) then csr.rdata <= csr.pmpaddr(60); else NULL; end if; -- R/W: pmpaddr60
|
when csr_pmpaddr60_c => if (PMP_NUM_REGIONS > 60) then csr.rdata <= csr.pmpaddr(60); else NULL; end if;
|
when csr_pmpaddr61_c => if (PMP_NUM_REGIONS > 61) then csr.rdata <= csr.pmpaddr(61); else NULL; end if; -- R/W: pmpaddr61
|
when csr_pmpaddr61_c => if (PMP_NUM_REGIONS > 61) then csr.rdata <= csr.pmpaddr(61); else NULL; end if;
|
when csr_pmpaddr62_c => if (PMP_NUM_REGIONS > 62) then csr.rdata <= csr.pmpaddr(62); else NULL; end if; -- R/W: pmpaddr62
|
when csr_pmpaddr62_c => if (PMP_NUM_REGIONS > 62) then csr.rdata <= csr.pmpaddr(62); else NULL; end if;
|
when csr_pmpaddr63_c => if (PMP_NUM_REGIONS > 63) then csr.rdata <= csr.pmpaddr(63); else NULL; end if; -- R/W: pmpaddr63
|
when csr_pmpaddr63_c => if (PMP_NUM_REGIONS > 63) then csr.rdata <= csr.pmpaddr(63); else NULL; end if;
|
|
|
-- machine counter setup --
|
-- machine counter setup --
|
-- --------------------------------------------------------------------
|
-- --------------------------------------------------------------------
|
when csr_mcountinhibit_c => -- mcountinhibit (r/w): machine counter-inhibit register
|
when csr_mcountinhibit_c => -- mcountinhibit (r/w): machine counter-inhibit register
|
csr.rdata(0) <= csr.mcountinhibit_cy; -- enable auto-increment of [m]cycle[h] counter
|
csr.rdata(0) <= csr.mcountinhibit_cy; -- enable auto-increment of [m]cycle[h] counter
|
csr.rdata(2) <= csr.mcountinhibit_ir; -- enable auto-increment of [m]instret[h] counter
|
csr.rdata(2) <= csr.mcountinhibit_ir; -- enable auto-increment of [m]instret[h] counter
|
|
if (HPM_NUM_CNTS > 0) then -- any HPMs available?
|
csr.rdata(csr.mcountinhibit_hpm'left+3 downto 3) <= csr.mcountinhibit_hpm; -- enable auto-increment of [m]hpmcounterx[h] counter
|
csr.rdata(csr.mcountinhibit_hpm'left+3 downto 3) <= csr.mcountinhibit_hpm; -- enable auto-increment of [m]hpmcounterx[h] counter
|
|
end if;
|
|
|
-- machine performance-monitoring event selector --
|
-- machine performance-monitoring event selector (r/w) --
|
-- --------------------------------------------------------------------
|
-- --------------------------------------------------------------------
|
when csr_mhpmevent3_c => if (HPM_NUM_CNTS > 00) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(00); else NULL; end if; -- R/W: mhpmevent3
|
when csr_mhpmevent3_c => if (HPM_NUM_CNTS > 00) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(00); else NULL; end if;
|
when csr_mhpmevent4_c => if (HPM_NUM_CNTS > 01) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(01); else NULL; end if; -- R/W: mhpmevent4
|
when csr_mhpmevent4_c => if (HPM_NUM_CNTS > 01) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(01); else NULL; end if;
|
when csr_mhpmevent5_c => if (HPM_NUM_CNTS > 02) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(02); else NULL; end if; -- R/W: mhpmevent5
|
when csr_mhpmevent5_c => if (HPM_NUM_CNTS > 02) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(02); else NULL; end if;
|
when csr_mhpmevent6_c => if (HPM_NUM_CNTS > 03) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(03); else NULL; end if; -- R/W: mhpmevent6
|
when csr_mhpmevent6_c => if (HPM_NUM_CNTS > 03) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(03); else NULL; end if;
|
when csr_mhpmevent7_c => if (HPM_NUM_CNTS > 04) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(04); else NULL; end if; -- R/W: mhpmevent7
|
when csr_mhpmevent7_c => if (HPM_NUM_CNTS > 04) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(04); else NULL; end if;
|
when csr_mhpmevent8_c => if (HPM_NUM_CNTS > 05) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(05); else NULL; end if; -- R/W: mhpmevent8
|
when csr_mhpmevent8_c => if (HPM_NUM_CNTS > 05) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(05); else NULL; end if;
|
when csr_mhpmevent9_c => if (HPM_NUM_CNTS > 06) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(06); else NULL; end if; -- R/W: mhpmevent9
|
when csr_mhpmevent9_c => if (HPM_NUM_CNTS > 06) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(06); else NULL; end if;
|
when csr_mhpmevent10_c => if (HPM_NUM_CNTS > 07) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(07); else NULL; end if; -- R/W: mhpmevent10
|
when csr_mhpmevent10_c => if (HPM_NUM_CNTS > 07) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(07); else NULL; end if;
|
when csr_mhpmevent11_c => if (HPM_NUM_CNTS > 08) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(08); else NULL; end if; -- R/W: mhpmevent11
|
when csr_mhpmevent11_c => if (HPM_NUM_CNTS > 08) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(08); else NULL; end if;
|
when csr_mhpmevent12_c => if (HPM_NUM_CNTS > 09) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(09); else NULL; end if; -- R/W: mhpmevent12
|
when csr_mhpmevent12_c => if (HPM_NUM_CNTS > 09) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(09); else NULL; end if;
|
when csr_mhpmevent13_c => if (HPM_NUM_CNTS > 10) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(10); else NULL; end if; -- R/W: mhpmevent13
|
when csr_mhpmevent13_c => if (HPM_NUM_CNTS > 10) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(10); else NULL; end if;
|
when csr_mhpmevent14_c => if (HPM_NUM_CNTS > 11) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(11); else NULL; end if; -- R/W: mhpmevent14
|
when csr_mhpmevent14_c => if (HPM_NUM_CNTS > 11) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(11); else NULL; end if;
|
when csr_mhpmevent15_c => if (HPM_NUM_CNTS > 12) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(12); else NULL; end if; -- R/W: mhpmevent15
|
when csr_mhpmevent15_c => if (HPM_NUM_CNTS > 12) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(12); else NULL; end if;
|
when csr_mhpmevent16_c => if (HPM_NUM_CNTS > 13) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(13); else NULL; end if; -- R/W: mhpmevent16
|
when csr_mhpmevent16_c => if (HPM_NUM_CNTS > 13) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(13); else NULL; end if;
|
when csr_mhpmevent17_c => if (HPM_NUM_CNTS > 14) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(14); else NULL; end if; -- R/W: mhpmevent17
|
when csr_mhpmevent17_c => if (HPM_NUM_CNTS > 14) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(14); else NULL; end if;
|
when csr_mhpmevent18_c => if (HPM_NUM_CNTS > 15) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(15); else NULL; end if; -- R/W: mhpmevent18
|
when csr_mhpmevent18_c => if (HPM_NUM_CNTS > 15) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(15); else NULL; end if;
|
when csr_mhpmevent19_c => if (HPM_NUM_CNTS > 16) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(16); else NULL; end if; -- R/W: mhpmevent19
|
when csr_mhpmevent19_c => if (HPM_NUM_CNTS > 16) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(16); else NULL; end if;
|
when csr_mhpmevent20_c => if (HPM_NUM_CNTS > 17) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(17); else NULL; end if; -- R/W: mhpmevent20
|
when csr_mhpmevent20_c => if (HPM_NUM_CNTS > 17) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(17); else NULL; end if;
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when csr_mhpmevent21_c => if (HPM_NUM_CNTS > 18) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(18); else NULL; end if; -- R/W: mhpmevent21
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when csr_mhpmevent21_c => if (HPM_NUM_CNTS > 18) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(18); else NULL; end if;
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when csr_mhpmevent22_c => if (HPM_NUM_CNTS > 19) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(19); else NULL; end if; -- R/W: mhpmevent22
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when csr_mhpmevent22_c => if (HPM_NUM_CNTS > 19) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(19); else NULL; end if;
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when csr_mhpmevent23_c => if (HPM_NUM_CNTS > 20) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(20); else NULL; end if; -- R/W: mhpmevent23
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when csr_mhpmevent23_c => if (HPM_NUM_CNTS > 20) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(20); else NULL; end if;
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when csr_mhpmevent24_c => if (HPM_NUM_CNTS > 21) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(21); else NULL; end if; -- R/W: mhpmevent24
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when csr_mhpmevent24_c => if (HPM_NUM_CNTS > 21) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(21); else NULL; end if;
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when csr_mhpmevent25_c => if (HPM_NUM_CNTS > 22) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(22); else NULL; end if; -- R/W: mhpmevent25
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when csr_mhpmevent25_c => if (HPM_NUM_CNTS > 22) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(22); else NULL; end if;
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when csr_mhpmevent26_c => if (HPM_NUM_CNTS > 23) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(23); else NULL; end if; -- R/W: mhpmevent26
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when csr_mhpmevent26_c => if (HPM_NUM_CNTS > 23) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(23); else NULL; end if;
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when csr_mhpmevent27_c => if (HPM_NUM_CNTS > 24) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(24); else NULL; end if; -- R/W: mhpmevent27
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when csr_mhpmevent27_c => if (HPM_NUM_CNTS > 24) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(24); else NULL; end if;
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when csr_mhpmevent28_c => if (HPM_NUM_CNTS > 25) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(25); else NULL; end if; -- R/W: mhpmevent28
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when csr_mhpmevent28_c => if (HPM_NUM_CNTS > 25) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(25); else NULL; end if;
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when csr_mhpmevent29_c => if (HPM_NUM_CNTS > 26) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(26); else NULL; end if; -- R/W: mhpmevent29
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when csr_mhpmevent29_c => if (HPM_NUM_CNTS > 26) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(26); else NULL; end if;
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when csr_mhpmevent30_c => if (HPM_NUM_CNTS > 27) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(27); else NULL; end if; -- R/W: mhpmevent30
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when csr_mhpmevent30_c => if (HPM_NUM_CNTS > 27) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(27); else NULL; end if;
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when csr_mhpmevent31_c => if (HPM_NUM_CNTS > 28) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(28); else NULL; end if; -- R/W: mhpmevent31
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when csr_mhpmevent31_c => if (HPM_NUM_CNTS > 28) then csr.rdata(hpmcnt_event_size_c-1 downto 0) <= csr.mhpmevent(28); else NULL; end if;
|
|
|
-- counters and timers --
|
-- counters and timers --
|
-- --------------------------------------------------------------------
|
-- --------------------------------------------------------------------
|
when csr_cycle_c | csr_mcycle_c => -- [m]cycle (r/w): Cycle counter LOW
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when csr_cycle_c | csr_mcycle_c => -- [m]cycle (r/w): Cycle counter LOW
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if (cpu_cnt_lo_width_c > 0) then csr.rdata(cpu_cnt_lo_width_c-1 downto 0) <= csr.mcycle(cpu_cnt_lo_width_c-1 downto 0); else NULL; end if;
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if (cpu_cnt_lo_width_c > 0) then csr.rdata(cpu_cnt_lo_width_c-1 downto 0) <= csr.mcycle(cpu_cnt_lo_width_c-1 downto 0); else NULL; end if;
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| Line 2702... |
Line 2750... |
when csr_time_c => csr.rdata <= time_i(31 downto 0); -- time (r/-): System time LOW (from MTIME unit)
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when csr_time_c => csr.rdata <= time_i(31 downto 0); -- time (r/-): System time LOW (from MTIME unit)
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when csr_timeh_c => csr.rdata <= time_i(63 downto 32); -- timeh (r/-): System time HIGH (from MTIME unit)
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when csr_timeh_c => csr.rdata <= time_i(63 downto 32); -- timeh (r/-): System time HIGH (from MTIME unit)
|
|
|
-- hardware performance counters --
|
-- hardware performance counters --
|
-- --------------------------------------------------------------------
|
-- --------------------------------------------------------------------
|
when csr_mhpmcounter3_c => if (HPM_NUM_CNTS > 00) then csr.rdata <= csr.mhpmcounter_rd(00); else NULL; end if; -- r/w: mhpmcounter3 - low
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-- low word (r/w) --
|
when csr_mhpmcounter4_c => if (HPM_NUM_CNTS > 01) then csr.rdata <= csr.mhpmcounter_rd(01); else NULL; end if; -- r/w: mhpmcounter4 - low
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when csr_mhpmcounter3_c => if (HPM_NUM_CNTS > 00) then csr.rdata <= csr.mhpmcounter_rd(00); else NULL; end if;
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when csr_mhpmcounter5_c => if (HPM_NUM_CNTS > 02) then csr.rdata <= csr.mhpmcounter_rd(02); else NULL; end if; -- r/w: mhpmcounter5 - low
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when csr_mhpmcounter4_c => if (HPM_NUM_CNTS > 01) then csr.rdata <= csr.mhpmcounter_rd(01); else NULL; end if;
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when csr_mhpmcounter6_c => if (HPM_NUM_CNTS > 03) then csr.rdata <= csr.mhpmcounter_rd(03); else NULL; end if; -- r/w: mhpmcounter6 - low
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when csr_mhpmcounter5_c => if (HPM_NUM_CNTS > 02) then csr.rdata <= csr.mhpmcounter_rd(02); else NULL; end if;
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when csr_mhpmcounter7_c => if (HPM_NUM_CNTS > 04) then csr.rdata <= csr.mhpmcounter_rd(04); else NULL; end if; -- r/w: mhpmcounter7 - low
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when csr_mhpmcounter6_c => if (HPM_NUM_CNTS > 03) then csr.rdata <= csr.mhpmcounter_rd(03); else NULL; end if;
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when csr_mhpmcounter8_c => if (HPM_NUM_CNTS > 05) then csr.rdata <= csr.mhpmcounter_rd(05); else NULL; end if; -- r/w: mhpmcounter8 - low
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when csr_mhpmcounter7_c => if (HPM_NUM_CNTS > 04) then csr.rdata <= csr.mhpmcounter_rd(04); else NULL; end if;
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when csr_mhpmcounter9_c => if (HPM_NUM_CNTS > 06) then csr.rdata <= csr.mhpmcounter_rd(06); else NULL; end if; -- r/w: mhpmcounter9 - low
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when csr_mhpmcounter8_c => if (HPM_NUM_CNTS > 05) then csr.rdata <= csr.mhpmcounter_rd(05); else NULL; end if;
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when csr_mhpmcounter10_c => if (HPM_NUM_CNTS > 07) then csr.rdata <= csr.mhpmcounter_rd(07); else NULL; end if; -- r/w: mhpmcounter10 - low
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when csr_mhpmcounter9_c => if (HPM_NUM_CNTS > 06) then csr.rdata <= csr.mhpmcounter_rd(06); else NULL; end if;
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when csr_mhpmcounter11_c => if (HPM_NUM_CNTS > 08) then csr.rdata <= csr.mhpmcounter_rd(08); else NULL; end if; -- r/w: mhpmcounter11 - low
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when csr_mhpmcounter10_c => if (HPM_NUM_CNTS > 07) then csr.rdata <= csr.mhpmcounter_rd(07); else NULL; end if;
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when csr_mhpmcounter12_c => if (HPM_NUM_CNTS > 09) then csr.rdata <= csr.mhpmcounter_rd(09); else NULL; end if; -- r/w: mhpmcounter12 - low
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when csr_mhpmcounter11_c => if (HPM_NUM_CNTS > 08) then csr.rdata <= csr.mhpmcounter_rd(08); else NULL; end if;
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when csr_mhpmcounter13_c => if (HPM_NUM_CNTS > 10) then csr.rdata <= csr.mhpmcounter_rd(10); else NULL; end if; -- r/w: mhpmcounter13 - low
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when csr_mhpmcounter12_c => if (HPM_NUM_CNTS > 09) then csr.rdata <= csr.mhpmcounter_rd(09); else NULL; end if;
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when csr_mhpmcounter14_c => if (HPM_NUM_CNTS > 11) then csr.rdata <= csr.mhpmcounter_rd(11); else NULL; end if; -- r/w: mhpmcounter14 - low
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when csr_mhpmcounter13_c => if (HPM_NUM_CNTS > 10) then csr.rdata <= csr.mhpmcounter_rd(10); else NULL; end if;
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when csr_mhpmcounter15_c => if (HPM_NUM_CNTS > 12) then csr.rdata <= csr.mhpmcounter_rd(12); else NULL; end if; -- r/w: mhpmcounter15 - low
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when csr_mhpmcounter14_c => if (HPM_NUM_CNTS > 11) then csr.rdata <= csr.mhpmcounter_rd(11); else NULL; end if;
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when csr_mhpmcounter16_c => if (HPM_NUM_CNTS > 13) then csr.rdata <= csr.mhpmcounter_rd(13); else NULL; end if; -- r/w: mhpmcounter16 - low
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when csr_mhpmcounter15_c => if (HPM_NUM_CNTS > 12) then csr.rdata <= csr.mhpmcounter_rd(12); else NULL; end if;
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when csr_mhpmcounter17_c => if (HPM_NUM_CNTS > 14) then csr.rdata <= csr.mhpmcounter_rd(14); else NULL; end if; -- r/w: mhpmcounter17 - low
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when csr_mhpmcounter16_c => if (HPM_NUM_CNTS > 13) then csr.rdata <= csr.mhpmcounter_rd(13); else NULL; end if;
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when csr_mhpmcounter18_c => if (HPM_NUM_CNTS > 15) then csr.rdata <= csr.mhpmcounter_rd(15); else NULL; end if; -- r/w: mhpmcounter18 - low
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when csr_mhpmcounter17_c => if (HPM_NUM_CNTS > 14) then csr.rdata <= csr.mhpmcounter_rd(14); else NULL; end if;
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when csr_mhpmcounter19_c => if (HPM_NUM_CNTS > 16) then csr.rdata <= csr.mhpmcounter_rd(16); else NULL; end if; -- r/w: mhpmcounter19 - low
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when csr_mhpmcounter18_c => if (HPM_NUM_CNTS > 15) then csr.rdata <= csr.mhpmcounter_rd(15); else NULL; end if;
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when csr_mhpmcounter20_c => if (HPM_NUM_CNTS > 17) then csr.rdata <= csr.mhpmcounter_rd(17); else NULL; end if; -- r/w: mhpmcounter20 - low
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when csr_mhpmcounter19_c => if (HPM_NUM_CNTS > 16) then csr.rdata <= csr.mhpmcounter_rd(16); else NULL; end if;
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when csr_mhpmcounter21_c => if (HPM_NUM_CNTS > 18) then csr.rdata <= csr.mhpmcounter_rd(18); else NULL; end if; -- r/w: mhpmcounter21 - low
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when csr_mhpmcounter20_c => if (HPM_NUM_CNTS > 17) then csr.rdata <= csr.mhpmcounter_rd(17); else NULL; end if;
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when csr_mhpmcounter22_c => if (HPM_NUM_CNTS > 19) then csr.rdata <= csr.mhpmcounter_rd(19); else NULL; end if; -- r/w: mhpmcounter22 - low
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when csr_mhpmcounter21_c => if (HPM_NUM_CNTS > 18) then csr.rdata <= csr.mhpmcounter_rd(18); else NULL; end if;
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when csr_mhpmcounter23_c => if (HPM_NUM_CNTS > 20) then csr.rdata <= csr.mhpmcounter_rd(20); else NULL; end if; -- r/w: mhpmcounter23 - low
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when csr_mhpmcounter22_c => if (HPM_NUM_CNTS > 19) then csr.rdata <= csr.mhpmcounter_rd(19); else NULL; end if;
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when csr_mhpmcounter24_c => if (HPM_NUM_CNTS > 21) then csr.rdata <= csr.mhpmcounter_rd(21); else NULL; end if; -- r/w: mhpmcounter24 - low
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when csr_mhpmcounter23_c => if (HPM_NUM_CNTS > 20) then csr.rdata <= csr.mhpmcounter_rd(20); else NULL; end if;
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when csr_mhpmcounter25_c => if (HPM_NUM_CNTS > 22) then csr.rdata <= csr.mhpmcounter_rd(22); else NULL; end if; -- r/w: mhpmcounter25 - low
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when csr_mhpmcounter24_c => if (HPM_NUM_CNTS > 21) then csr.rdata <= csr.mhpmcounter_rd(21); else NULL; end if;
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when csr_mhpmcounter26_c => if (HPM_NUM_CNTS > 23) then csr.rdata <= csr.mhpmcounter_rd(23); else NULL; end if; -- r/w: mhpmcounter26 - low
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when csr_mhpmcounter25_c => if (HPM_NUM_CNTS > 22) then csr.rdata <= csr.mhpmcounter_rd(22); else NULL; end if;
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when csr_mhpmcounter27_c => if (HPM_NUM_CNTS > 24) then csr.rdata <= csr.mhpmcounter_rd(24); else NULL; end if; -- r/w: mhpmcounter27 - low
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when csr_mhpmcounter26_c => if (HPM_NUM_CNTS > 23) then csr.rdata <= csr.mhpmcounter_rd(23); else NULL; end if;
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when csr_mhpmcounter28_c => if (HPM_NUM_CNTS > 25) then csr.rdata <= csr.mhpmcounter_rd(25); else NULL; end if; -- r/w: mhpmcounter28 - low
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when csr_mhpmcounter27_c => if (HPM_NUM_CNTS > 24) then csr.rdata <= csr.mhpmcounter_rd(24); else NULL; end if;
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when csr_mhpmcounter29_c => if (HPM_NUM_CNTS > 26) then csr.rdata <= csr.mhpmcounter_rd(26); else NULL; end if; -- r/w: mhpmcounter29 - low
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when csr_mhpmcounter28_c => if (HPM_NUM_CNTS > 25) then csr.rdata <= csr.mhpmcounter_rd(25); else NULL; end if;
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when csr_mhpmcounter30_c => if (HPM_NUM_CNTS > 27) then csr.rdata <= csr.mhpmcounter_rd(27); else NULL; end if; -- r/w: mhpmcounter30 - low
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when csr_mhpmcounter29_c => if (HPM_NUM_CNTS > 26) then csr.rdata <= csr.mhpmcounter_rd(26); else NULL; end if;
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when csr_mhpmcounter31_c => if (HPM_NUM_CNTS > 28) then csr.rdata <= csr.mhpmcounter_rd(28); else NULL; end if; -- r/w: mhpmcounter31 - low
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when csr_mhpmcounter30_c => if (HPM_NUM_CNTS > 27) then csr.rdata <= csr.mhpmcounter_rd(27); else NULL; end if;
|
|
when csr_mhpmcounter31_c => if (HPM_NUM_CNTS > 28) then csr.rdata <= csr.mhpmcounter_rd(28); else NULL; end if;
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when csr_mhpmcounter3h_c => if (HPM_NUM_CNTS > 00) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(00); else NULL; end if; -- r/w: mhpmcounter3h - high
|
-- high word (r/w) --
|
when csr_mhpmcounter4h_c => if (HPM_NUM_CNTS > 01) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(01); else NULL; end if; -- r/w: mhpmcounter4h - high
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when csr_mhpmcounter3h_c => if (HPM_NUM_CNTS > 00) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(00); else NULL; end if;
|
when csr_mhpmcounter5h_c => if (HPM_NUM_CNTS > 02) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(02); else NULL; end if; -- r/w: mhpmcounter5h - high
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when csr_mhpmcounter4h_c => if (HPM_NUM_CNTS > 01) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(01); else NULL; end if;
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when csr_mhpmcounter6h_c => if (HPM_NUM_CNTS > 03) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(03); else NULL; end if; -- r/w: mhpmcounter6h - high
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when csr_mhpmcounter5h_c => if (HPM_NUM_CNTS > 02) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(02); else NULL; end if;
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when csr_mhpmcounter7h_c => if (HPM_NUM_CNTS > 04) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(04); else NULL; end if; -- r/w: mhpmcounter7h - high
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when csr_mhpmcounter6h_c => if (HPM_NUM_CNTS > 03) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(03); else NULL; end if;
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when csr_mhpmcounter8h_c => if (HPM_NUM_CNTS > 05) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(05); else NULL; end if; -- r/w: mhpmcounter8h - high
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when csr_mhpmcounter7h_c => if (HPM_NUM_CNTS > 04) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(04); else NULL; end if;
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when csr_mhpmcounter9h_c => if (HPM_NUM_CNTS > 06) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(06); else NULL; end if; -- r/w: mhpmcounter9h - high
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when csr_mhpmcounter8h_c => if (HPM_NUM_CNTS > 05) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(05); else NULL; end if;
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when csr_mhpmcounter10h_c => if (HPM_NUM_CNTS > 07) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(07); else NULL; end if; -- r/w: mhpmcounter10h - high
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when csr_mhpmcounter9h_c => if (HPM_NUM_CNTS > 06) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(06); else NULL; end if;
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when csr_mhpmcounter11h_c => if (HPM_NUM_CNTS > 08) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(08); else NULL; end if; -- r/w: mhpmcounter11h - high
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when csr_mhpmcounter10h_c => if (HPM_NUM_CNTS > 07) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(07); else NULL; end if;
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when csr_mhpmcounter12h_c => if (HPM_NUM_CNTS > 09) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(09); else NULL; end if; -- r/w: mhpmcounter12h - high
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when csr_mhpmcounter11h_c => if (HPM_NUM_CNTS > 08) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(08); else NULL; end if;
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when csr_mhpmcounter13h_c => if (HPM_NUM_CNTS > 10) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(10); else NULL; end if; -- r/w: mhpmcounter13h - high
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when csr_mhpmcounter12h_c => if (HPM_NUM_CNTS > 09) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(09); else NULL; end if;
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when csr_mhpmcounter14h_c => if (HPM_NUM_CNTS > 11) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(11); else NULL; end if; -- r/w: mhpmcounter14h - high
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when csr_mhpmcounter13h_c => if (HPM_NUM_CNTS > 10) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(10); else NULL; end if;
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when csr_mhpmcounter15h_c => if (HPM_NUM_CNTS > 12) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(12); else NULL; end if; -- r/w: mhpmcounter15h - high
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when csr_mhpmcounter14h_c => if (HPM_NUM_CNTS > 11) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(11); else NULL; end if;
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when csr_mhpmcounter16h_c => if (HPM_NUM_CNTS > 13) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(13); else NULL; end if; -- r/w: mhpmcounter16h - high
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when csr_mhpmcounter15h_c => if (HPM_NUM_CNTS > 12) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(12); else NULL; end if;
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when csr_mhpmcounter17h_c => if (HPM_NUM_CNTS > 14) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(14); else NULL; end if; -- r/w: mhpmcounter17h - high
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when csr_mhpmcounter16h_c => if (HPM_NUM_CNTS > 13) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(13); else NULL; end if;
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when csr_mhpmcounter18h_c => if (HPM_NUM_CNTS > 15) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(15); else NULL; end if; -- r/w: mhpmcounter18h - high
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when csr_mhpmcounter17h_c => if (HPM_NUM_CNTS > 14) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(14); else NULL; end if;
|
when csr_mhpmcounter19h_c => if (HPM_NUM_CNTS > 16) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(16); else NULL; end if; -- r/w: mhpmcounter19h - high
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when csr_mhpmcounter18h_c => if (HPM_NUM_CNTS > 15) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(15); else NULL; end if;
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when csr_mhpmcounter20h_c => if (HPM_NUM_CNTS > 17) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(17); else NULL; end if; -- r/w: mhpmcounter20h - high
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when csr_mhpmcounter19h_c => if (HPM_NUM_CNTS > 16) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(16); else NULL; end if;
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when csr_mhpmcounter21h_c => if (HPM_NUM_CNTS > 18) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(18); else NULL; end if; -- r/w: mhpmcounter21h - high
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when csr_mhpmcounter20h_c => if (HPM_NUM_CNTS > 17) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(17); else NULL; end if;
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when csr_mhpmcounter22h_c => if (HPM_NUM_CNTS > 19) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(19); else NULL; end if; -- r/w: mhpmcounter22h - high
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when csr_mhpmcounter21h_c => if (HPM_NUM_CNTS > 18) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(18); else NULL; end if;
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when csr_mhpmcounter23h_c => if (HPM_NUM_CNTS > 20) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(20); else NULL; end if; -- r/w: mhpmcounter23h - high
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when csr_mhpmcounter22h_c => if (HPM_NUM_CNTS > 19) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(19); else NULL; end if;
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when csr_mhpmcounter24h_c => if (HPM_NUM_CNTS > 21) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(21); else NULL; end if; -- r/w: mhpmcounter24h - high
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when csr_mhpmcounter23h_c => if (HPM_NUM_CNTS > 20) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(20); else NULL; end if;
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when csr_mhpmcounter25h_c => if (HPM_NUM_CNTS > 22) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(22); else NULL; end if; -- r/w: mhpmcounter25h - high
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when csr_mhpmcounter24h_c => if (HPM_NUM_CNTS > 21) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(21); else NULL; end if;
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when csr_mhpmcounter26h_c => if (HPM_NUM_CNTS > 23) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(23); else NULL; end if; -- r/w: mhpmcounter26h - high
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when csr_mhpmcounter25h_c => if (HPM_NUM_CNTS > 22) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(22); else NULL; end if;
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when csr_mhpmcounter27h_c => if (HPM_NUM_CNTS > 24) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(24); else NULL; end if; -- r/w: mhpmcounter27h - high
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when csr_mhpmcounter26h_c => if (HPM_NUM_CNTS > 23) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(23); else NULL; end if;
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when csr_mhpmcounter28h_c => if (HPM_NUM_CNTS > 25) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(25); else NULL; end if; -- r/w: mhpmcounter28h - high
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when csr_mhpmcounter27h_c => if (HPM_NUM_CNTS > 24) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(24); else NULL; end if;
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when csr_mhpmcounter29h_c => if (HPM_NUM_CNTS > 26) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(26); else NULL; end if; -- r/w: mhpmcounter29h - high
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when csr_mhpmcounter28h_c => if (HPM_NUM_CNTS > 25) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(25); else NULL; end if;
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when csr_mhpmcounter30h_c => if (HPM_NUM_CNTS > 27) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(27); else NULL; end if; -- r/w: mhpmcounter30h - high
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when csr_mhpmcounter29h_c => if (HPM_NUM_CNTS > 26) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(26); else NULL; end if;
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when csr_mhpmcounter31h_c => if (HPM_NUM_CNTS > 28) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(28); else NULL; end if; -- r/w: mhpmcounter31h - high
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when csr_mhpmcounter30h_c => if (HPM_NUM_CNTS > 27) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(27); else NULL; end if;
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when csr_mhpmcounter31h_c => if (HPM_NUM_CNTS > 28) and (hpm_cnt_hi_width_c > 0) then csr.rdata <= csr.mhpmcounterh_rd(28); else NULL; end if;
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-- machine information registers --
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-- machine information registers --
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-- --------------------------------------------------------------------
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-- --------------------------------------------------------------------
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-- when csr_mvendorid_c => csr.rdata <= (others => '0'); -- mvendorid (r/-): vendor ID, implemented but always zero
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-- when csr_mvendorid_c => NULL; -- mvendorid (r/-): vendor ID, implemented but always zero
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when csr_marchid_c => csr.rdata(4 downto 0) <= "10011"; -- marchid (r/-): arch ID - official RISC-V open-source arch ID
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when csr_marchid_c => csr.rdata(4 downto 0) <= "10011"; -- marchid (r/-): arch ID - official RISC-V open-source arch ID
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when csr_mimpid_c => csr.rdata <= hw_version_c; -- mimpid (r/-): implementation ID -- NEORV32 hardware version
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when csr_mimpid_c => csr.rdata <= hw_version_c; -- mimpid (r/-): implementation ID -- NEORV32 hardware version
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when csr_mhartid_c => csr.rdata <= std_ulogic_vector(to_unsigned(HW_THREAD_ID, 32)); -- mhartid (r/-): hardware thread ID
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when csr_mhartid_c => csr.rdata <= std_ulogic_vector(to_unsigned(HW_THREAD_ID, 32)); -- mhartid (r/-): hardware thread ID
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-- when csr_mconfigptr_c => csr.rdata <= (others => '0'); -- mconfigptr (r/-): machine configuration pointer register, implemented but not assigned yet
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-- when csr_mconfigptr_c => NULL; -- mconfigptr (r/-): machine configuration pointer register, implemented but not assigned yet
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-- custom machine read-only CSRs --
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-- --------------------------------------------------------------------
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when csr_mzext_c => -- mzext (r/-): available RISC-V Z* sub-extensions
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csr.rdata(0) <= bool_to_ulogic_f(CPU_EXTENSION_RISCV_Zicsr); -- Zicsr
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csr.rdata(1) <= bool_to_ulogic_f(CPU_EXTENSION_RISCV_Zifencei); -- Zifencei
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csr.rdata(2) <= bool_to_ulogic_f(CPU_EXTENSION_RISCV_Zmmul); -- Zmmul
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-- ... --
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csr.rdata(5) <= bool_to_ulogic_f(CPU_EXTENSION_RISCV_Zfinx); -- Zfinx ("F-alternative")
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if (CPU_CNT_WIDTH = 64) then
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csr.rdata(6) <= '0'; -- Zxscnt (custom)
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csr.rdata(7) <= '0'; -- Zxnocnt (custom)
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elsif (CPU_CNT_WIDTH = 0) then
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csr.rdata(6) <= '0'; -- Zxscnt (custom)
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csr.rdata(7) <= '1'; -- Zxnocnt (custom)
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else -- counters available but 0-bit < actual_size < 64-bit
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csr.rdata(6) <= '1'; -- Zxscnt (custom)
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csr.rdata(7) <= '0'; -- Zxnocnt (custom)
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end if;
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csr.rdata(8) <= bool_to_ulogic_f(boolean(PMP_NUM_REGIONS > 0)); -- PMP (physical memory protection)
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csr.rdata(9) <= bool_to_ulogic_f(boolean(HPM_NUM_CNTS > 0)); -- HPM (hardware performance monitors)
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csr.rdata(10) <= bool_to_ulogic_f(CPU_EXTENSION_RISCV_DEBUG); -- RISC-V debug mode
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-- debug mode CSRs --
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-- debug mode CSRs --
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-- --------------------------------------------------------------------
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-- --------------------------------------------------------------------
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when csr_dcsr_c => if (CPU_EXTENSION_RISCV_DEBUG = true) then csr.rdata <= csr.dcsr_rd; else NULL; end if; -- dcsr (r/w): debug mode control and status
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when csr_dcsr_c => if (CPU_EXTENSION_RISCV_DEBUG = true) then csr.rdata <= csr.dcsr_rd; else NULL; end if; -- dcsr (r/w): debug mode control and status
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when csr_dpc_c => if (CPU_EXTENSION_RISCV_DEBUG = true) then csr.rdata <= csr.dpc; else NULL; end if; -- dpc (r/w): debug mode program counter
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when csr_dpc_c => if (CPU_EXTENSION_RISCV_DEBUG = true) then csr.rdata <= csr.dpc; else NULL; end if; -- dpc (r/w): debug mode program counter
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