From 4528ef2b43ca01b221fe938b17956e9e0a2b2c00 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Wed, 11 Sep 2019 07:55:35 +1000 Subject: [PATCH] Reformat core.vhdl --- core.vhdl | 313 +++++++++++++++++++++++++++++++++--------------------- 1 file changed, 191 insertions(+), 122 deletions(-) diff --git a/core.vhdl b/core.vhdl index e29c519..87401f0 100644 --- a/core.vhdl +++ b/core.vhdl @@ -7,132 +7,201 @@ use work.common.all; use work.wishbone_types.all; entity core is - generic ( - SIM : boolean := false - ); - port ( - clk : in std_logic; - rst : in std_logic; - - wishbone_insn_in : in wishbone_slave_out; - wishbone_insn_out : out wishbone_master_out; - - wishbone_data_in : in wishbone_slave_out; - wishbone_data_out : out wishbone_master_out; - - -- Added for debug, ghdl doesn't support external names unfortunately - registers : out regfile; - terminate_out : out std_ulogic - ); + generic ( + SIM : boolean := false + ); + port ( + clk : in std_logic; + rst : in std_logic; + + wishbone_insn_in : in wishbone_slave_out; + wishbone_insn_out : out wishbone_master_out; + + wishbone_data_in : in wishbone_slave_out; + wishbone_data_out : out wishbone_master_out; + + -- Added for debug, ghdl doesn't support external names unfortunately + registers : out regfile; + terminate_out : out std_ulogic + ); end core; architecture behave of core is - -- fetch signals - signal fetch1_to_fetch2: Fetch1ToFetch2Type; - signal fetch2_to_decode1: Fetch2ToDecode1Type; - - -- decode signals - signal decode1_to_decode2: Decode1ToDecode2Type; - signal decode2_to_execute1: Decode2ToExecute1Type; - - -- register file signals - signal register_file_to_decode2: RegisterFileToDecode2Type; - signal decode2_to_register_file: Decode2ToRegisterFileType; - signal writeback_to_register_file: WritebackToRegisterFileType; - - -- CR file signals - signal decode2_to_cr_file: Decode2ToCrFileType; - signal cr_file_to_decode2: CrFileToDecode2Type; - signal writeback_to_cr_file: WritebackToCrFileType; - - -- execute signals - signal execute1_to_execute2: Execute1ToExecute2Type; - signal execute2_to_writeback: Execute2ToWritebackType; - signal execute1_to_fetch1: Execute1ToFetch1Type; - - -- load store signals - signal decode2_to_loadstore1: Decode2ToLoadstore1Type; - signal loadstore1_to_loadstore2: Loadstore1ToLoadstore2Type; - signal loadstore2_to_writeback: Loadstore2ToWritebackType; - - -- multiply signals - signal decode2_to_multiply: Decode2ToMultiplyType; - signal multiply_to_writeback: MultiplyToWritebackType; - - -- local signals - signal fetch1_stall_in : std_ulogic; - signal fetch2_stall_in : std_ulogic; - signal fetch2_stall_out : std_ulogic; - signal decode1_stall_in : std_ulogic; - signal decode2_stall_out : std_ulogic; - - signal flush: std_ulogic; - - signal complete: std_ulogic; - - signal terminate: std_ulogic; + -- fetch signals + signal fetch1_to_fetch2: Fetch1ToFetch2Type; + signal fetch2_to_decode1: Fetch2ToDecode1Type; + + -- decode signals + signal decode1_to_decode2: Decode1ToDecode2Type; + signal decode2_to_execute1: Decode2ToExecute1Type; + + -- register file signals + signal register_file_to_decode2: RegisterFileToDecode2Type; + signal decode2_to_register_file: Decode2ToRegisterFileType; + signal writeback_to_register_file: WritebackToRegisterFileType; + + -- CR file signals + signal decode2_to_cr_file: Decode2ToCrFileType; + signal cr_file_to_decode2: CrFileToDecode2Type; + signal writeback_to_cr_file: WritebackToCrFileType; + + -- execute signals + signal execute1_to_execute2: Execute1ToExecute2Type; + signal execute2_to_writeback: Execute2ToWritebackType; + signal execute1_to_fetch1: Execute1ToFetch1Type; + + -- load store signals + signal decode2_to_loadstore1: Decode2ToLoadstore1Type; + signal loadstore1_to_loadstore2: Loadstore1ToLoadstore2Type; + signal loadstore2_to_writeback: Loadstore2ToWritebackType; + + -- multiply signals + signal decode2_to_multiply: Decode2ToMultiplyType; + signal multiply_to_writeback: MultiplyToWritebackType; + + -- local signals + signal fetch1_stall_in : std_ulogic; + signal fetch2_stall_in : std_ulogic; + signal fetch2_stall_out : std_ulogic; + signal decode1_stall_in : std_ulogic; + signal decode2_stall_out : std_ulogic; + + signal flush: std_ulogic; + + signal complete: std_ulogic; + + signal terminate: std_ulogic; begin - terminate_out <= terminate; - - fetch1_0: entity work.fetch1 - generic map (RESET_ADDRESS => (others => '0')) - port map (clk => clk, rst => rst, stall_in => fetch1_stall_in, flush_in => flush, - e_in => execute1_to_fetch1, f_out => fetch1_to_fetch2); - - fetch1_stall_in <= fetch2_stall_out or decode2_stall_out; - - fetch2_0: entity work.fetch2 - port map (clk => clk, rst => rst, stall_in => fetch2_stall_in, - stall_out => fetch2_stall_out, flush_in => flush, wishbone_in => wishbone_insn_in, - wishbone_out => wishbone_insn_out, f_in => fetch1_to_fetch2, - f_out => fetch2_to_decode1); - - fetch2_stall_in <= decode2_stall_out; - - decode1_0: entity work.decode1 - port map (clk => clk, rst => rst, stall_in => decode1_stall_in, flush_in => flush, f_in => fetch2_to_decode1, d_out => decode1_to_decode2); - - decode1_stall_in <= decode2_stall_out; - - decode2_0: entity work.decode2 - port map (clk => clk, rst => rst, stall_out => decode2_stall_out, flush_in => flush, - complete_in => complete, d_in => decode1_to_decode2, e_out => decode2_to_execute1, - l_out => decode2_to_loadstore1, m_out => decode2_to_multiply, - r_in => register_file_to_decode2, r_out => decode2_to_register_file, - c_in => cr_file_to_decode2, c_out => decode2_to_cr_file); - - register_file_0: entity work.register_file - port map (clk => clk, d_in => decode2_to_register_file, - d_out => register_file_to_decode2, w_in => writeback_to_register_file, - registers_out => registers); - - cr_file_0: entity work.cr_file - port map (clk => clk, d_in => decode2_to_cr_file, d_out => cr_file_to_decode2, - w_in => writeback_to_cr_file); - - execute1_0: entity work.execute1 - generic map (SIM => SIM) - port map (clk => clk, flush_out => flush, e_in => decode2_to_execute1, f_out => execute1_to_fetch1, - e_out => execute1_to_execute2, terminate_out => terminate); - - execute2_0: entity work.execute2 - port map (clk => clk, e_in => execute1_to_execute2, e_out => execute2_to_writeback); - - loadstore1_0: entity work.loadstore1 - port map (clk => clk, l_in => decode2_to_loadstore1, l_out => loadstore1_to_loadstore2); - - loadstore2_0: entity work.loadstore2 - port map (clk => clk, l_in => loadstore1_to_loadstore2, - w_out => loadstore2_to_writeback, m_in => wishbone_data_in, - m_out => wishbone_data_out); - - multiply_0: entity work.multiply - port map (clk => clk, m_in => decode2_to_multiply, m_out => multiply_to_writeback); - - writeback_0: entity work.writeback - port map (clk => clk, e_in => execute2_to_writeback, l_in => loadstore2_to_writeback, - m_in => multiply_to_writeback, w_out => writeback_to_register_file, - c_out => writeback_to_cr_file, complete_out => complete); + terminate_out <= terminate; + + fetch1_0: entity work.fetch1 + generic map ( + RESET_ADDRESS => (others => '0') + ) + port map ( + clk => clk, + rst => rst, + stall_in => fetch1_stall_in, + flush_in => flush, + e_in => execute1_to_fetch1, + f_out => fetch1_to_fetch2 + ); + + fetch1_stall_in <= fetch2_stall_out or decode2_stall_out; + + fetch2_0: entity work.fetch2 + port map ( + clk => clk, + rst => rst, + stall_in => fetch2_stall_in, + stall_out => fetch2_stall_out, + flush_in => flush, + wishbone_in => wishbone_insn_in, + wishbone_out => wishbone_insn_out, + f_in => fetch1_to_fetch2, + f_out => fetch2_to_decode1 + ); + + fetch2_stall_in <= decode2_stall_out; + + decode1_0: entity work.decode1 + port map ( + clk => clk, + rst => rst, + stall_in => decode1_stall_in, + flush_in => flush, + f_in => fetch2_to_decode1, + d_out => decode1_to_decode2 + ); + + decode1_stall_in <= decode2_stall_out; + + decode2_0: entity work.decode2 + port map ( + clk => clk, + rst => rst, + stall_out => decode2_stall_out, + flush_in => flush, + complete_in => complete, + d_in => decode1_to_decode2, + e_out => decode2_to_execute1, + l_out => decode2_to_loadstore1, + m_out => decode2_to_multiply, + r_in => register_file_to_decode2, + r_out => decode2_to_register_file, + c_in => cr_file_to_decode2, + c_out => decode2_to_cr_file + ); + + register_file_0: entity work.register_file + port map ( + clk => clk, + d_in => decode2_to_register_file, + d_out => register_file_to_decode2, + w_in => writeback_to_register_file, + registers_out => registers); + + cr_file_0: entity work.cr_file + port map ( + clk => clk, + d_in => decode2_to_cr_file, + d_out => cr_file_to_decode2, + w_in => writeback_to_cr_file + ); + + execute1_0: entity work.execute1 + generic map ( + SIM => SIM + ) + port map ( + clk => clk, + flush_out => flush, + e_in => decode2_to_execute1, + f_out => execute1_to_fetch1, + e_out => execute1_to_execute2, + terminate_out => terminate + ); + + execute2_0: entity work.execute2 + port map ( + clk => clk, + e_in => execute1_to_execute2, + e_out => execute2_to_writeback + ); + + loadstore1_0: entity work.loadstore1 + port map ( + clk => clk, + l_in => decode2_to_loadstore1, + l_out => loadstore1_to_loadstore2 + ); + + loadstore2_0: entity work.loadstore2 + port map ( + clk => clk, + l_in => loadstore1_to_loadstore2, + w_out => loadstore2_to_writeback, + m_in => wishbone_data_in, + m_out => wishbone_data_out + ); + + multiply_0: entity work.multiply + port map ( + clk => clk, + m_in => decode2_to_multiply, + m_out => multiply_to_writeback + ); + + writeback_0: entity work.writeback + port map ( + clk => clk, + e_in => execute2_to_writeback, + l_in => loadstore2_to_writeback, + m_in => multiply_to_writeback, + w_out => writeback_to_register_file, + c_out => writeback_to_cr_file, + complete_out => complete + ); end behave; -- 2.30.2