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litedram: Split the init memory from the main wrapper

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Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
pull/178/head
Benjamin Herrenschmidt 5 years ago
parent f86fb74bfe
commit 12f36b4a35
12 changed files with 376 additions and 264 deletions
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2
litedram/extras/fusesoc-add-files.py
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@ -29,6 +29,8 @@ class LiteDRAMGenerator(Generator):
files.append({f : {'file_type' : 'verilogSource'}}) files.append({f : {'file_type' : 'verilogSource'}})
f = os.path.join(gen_dir, "litedram-wrapper.vhdl") f = os.path.join(gen_dir, "litedram-wrapper.vhdl")
files.append({f : {'file_type' : 'vhdlSource-2008'}}) files.append({f : {'file_type' : 'vhdlSource-2008'}})
f = os.path.join(gen_dir, "litedram-initmem.vhdl")
files.append({f : {'file_type' : 'vhdlSource-2008'}})
f = os.path.join(gen_dir, "litedram_core.init") f = os.path.join(gen_dir, "litedram_core.init")
files.append({f : {'file_type' : 'user'}}) files.append({f : {'file_type' : 'user'}})



72
litedram/gen-src/dram-init-mem.vhdl
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@ -0,0 +1,72 @@
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use std.textio.all;

library work;
use work.wishbone_types.all;

entity dram_init_mem is
port (
clk : in std_ulogic;
wb_in : in wb_io_master_out;
wb_out : out wb_io_slave_out
);
end entity dram_init_mem;

architecture rtl of dram_init_mem is

constant INIT_RAM_SIZE : integer := 16384;
constant INIT_RAM_ABITS :integer := 14;
constant INIT_RAM_FILE : string := "litedram_core.init";

type ram_t is array(0 to (INIT_RAM_SIZE / 4) - 1) of std_logic_vector(31 downto 0);

impure function init_load_ram(name : string) return ram_t is
file ram_file : text open read_mode is name;
variable temp_word : std_logic_vector(63 downto 0);
variable temp_ram : ram_t := (others => (others => '0'));
variable ram_line : line;
begin
for i in 0 to (INIT_RAM_SIZE/8)-1 loop
exit when endfile(ram_file);
readline(ram_file, ram_line);
hread(ram_line, temp_word);
temp_ram(i*2) := temp_word(31 downto 0);
temp_ram(i*2+1) := temp_word(63 downto 32);
end loop;
return temp_ram;
end function;

signal init_ram : ram_t := init_load_ram(INIT_RAM_FILE);

attribute ram_style : string;
attribute ram_style of init_ram: signal is "block";

begin

init_ram_0: process(clk)
variable adr : integer;
begin
if rising_edge(clk) then
wb_out.ack <= '0';
if (wb_in.cyc and wb_in.stb) = '1' then
adr := to_integer((unsigned(wb_in.adr(INIT_RAM_ABITS-1 downto 2))));
if wb_in.we = '0' then
wb_out.dat <= init_ram(adr);
else
for i in 0 to 3 loop
if wb_in.sel(i) = '1' then
init_ram(adr)(((i + 1) * 8) - 1 downto i * 8) <=
wb_in.dat(((i + 1) * 8) - 1 downto i * 8);
end if;
end loop;
end if;
wb_out.ack <= '1';
end if;
end if;
end process;

wb_out.stall <= '0';

end architecture rtl;

4
litedram/gen-src/generate.py
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@ -128,19 +128,23 @@ def generate_one(t, mw_init):
if mw_init: if mw_init:
src_wrap_file = os.path.join(gen_src_dir, "wrapper-mw-init.vhdl") src_wrap_file = os.path.join(gen_src_dir, "wrapper-mw-init.vhdl")
src_init_file = build_init_code(build_dir) src_init_file = build_init_code(build_dir)
src_initram_file = os.path.join(gen_src_dir, "dram-init-mem.vhdl")
else: else:
write_to_file(os.path.join(t_dir, "init-cpu.txt"), cpu) write_to_file(os.path.join(t_dir, "init-cpu.txt"), cpu)
src_wrap_file = os.path.join(gen_src_dir, "wrapper-self-init.vhdl") src_wrap_file = os.path.join(gen_src_dir, "wrapper-self-init.vhdl")
src_init_file = os.path.join(gw_dir, "mem.init") src_init_file = os.path.join(gw_dir, "mem.init")
src_initram_file = os.path.join(gen_src_dir, "no-init-mem.vhdl")


# Copy generated files to target dir, amend them if necessary # Copy generated files to target dir, amend them if necessary
core_file = os.path.join(gw_dir, "litedram_core.v") core_file = os.path.join(gw_dir, "litedram_core.v")
dst_init_file = os.path.join(t_dir, "litedram_core.init") dst_init_file = os.path.join(t_dir, "litedram_core.init")
dst_wrap_file = os.path.join(t_dir, "litedram-wrapper.vhdl") dst_wrap_file = os.path.join(t_dir, "litedram-wrapper.vhdl")
dst_initram_file = os.path.join(t_dir, "litedram-initmem.vhdl")
replace_in_file(core_file, "mem.init", "litedram_core.init") replace_in_file(core_file, "mem.init", "litedram_core.init")
shutil.copy(core_file, t_dir) shutil.copy(core_file, t_dir)
shutil.copyfile(src_init_file, dst_init_file) shutil.copyfile(src_init_file, dst_init_file)
shutil.copyfile(src_wrap_file, dst_wrap_file) shutil.copyfile(src_wrap_file, dst_wrap_file)
shutil.copyfile(src_initram_file, dst_initram_file)


def main(): def main():



23
litedram/gen-src/no-init-mem.vhdl
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@ -0,0 +1,23 @@
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use std.textio.all;

library work;
use work.wishbone_types.all;

entity dram_init_mem is
port (
clk : in std_ulogic;
wb_in : in wb_io_master_out;
wb_out : out wb_io_slave_out
);
end entity dram_init_mem;

architecture rtl of dram_init_mem is

wb_out.dat <= (others => '0');
wb_out.stall <= '0';
wb_out.ack <= wb_in.stb and wb_in.cyc;

end architecture rtl;

58
litedram/gen-src/wrapper-mw-init.vhdl
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@ -5,7 +5,6 @@ use std.textio.all;


library work; library work;
use work.wishbone_types.all; use work.wishbone_types.all;
use work.sim_console.all;


entity litedram_wrapper is entity litedram_wrapper is
generic ( generic (
@ -136,61 +135,18 @@ architecture behaviour of litedram_wrapper is
type state_t is (CMD, MWRITE, MREAD); type state_t is (CMD, MWRITE, MREAD);
signal state : state_t; signal state : state_t;


constant INIT_RAM_SIZE : integer := 16384;
constant INIT_RAM_ABITS :integer := 14;
constant INIT_RAM_FILE : string := "litedram_core.init";

type ram_t is array(0 to (INIT_RAM_SIZE / 4) - 1) of std_logic_vector(31 downto 0);

impure function init_load_ram(name : string) return ram_t is
file ram_file : text open read_mode is name;
variable temp_word : std_logic_vector(63 downto 0);
variable temp_ram : ram_t := (others => (others => '0'));
variable ram_line : line;
begin
for i in 0 to (INIT_RAM_SIZE/8)-1 loop
exit when endfile(ram_file);
readline(ram_file, ram_line);
hread(ram_line, temp_word);
temp_ram(i*2) := temp_word(31 downto 0);
temp_ram(i*2+1) := temp_word(63 downto 32);
end loop;
return temp_ram;
end function;

signal init_ram : ram_t := init_load_ram(INIT_RAM_FILE);

attribute ram_style : string;
attribute ram_style of init_ram: signal is "block";

begin begin


-- alternate core reset address set when DRAM is not initialized. -- alternate core reset address set when DRAM is not initialized.
core_alt_reset <= not init_done; core_alt_reset <= not init_done;


-- BRAM Memory slave. TODO: Pipeline it with an output buffer -- Init code BRAM memory slave
-- to improve timing init_ram_0: entity work.dram_init_mem
init_ram_0: process(system_clk) port map(
variable adr : integer; clk => system_clk,
begin wb_in => wb_init_in,
if rising_edge(system_clk) then wb_out => wb_init_out
wb_init_out.ack <= '0'; );
if (wb_init_in.cyc and wb_init_in.stb) = '1' then
adr := to_integer((unsigned(wb_init_in.adr(INIT_RAM_ABITS-1 downto 2))));
if wb_init_in.we = '0' then
wb_init_out.dat <= init_ram(adr);
else
for i in 0 to 3 loop
if wb_init_in.sel(i) = '1' then
init_ram(adr)(((i + 1) * 8) - 1 downto i * 8) <=
wb_init_in.dat(((i + 1) * 8) - 1 downto i * 8);
end if;
end loop;
end if;
wb_init_out.ack <= '1';
end if;
end if;
end process;


-- --
-- Control bus wishbone: This muxes the wishbone to the CSRs -- Control bus wishbone: This muxes the wishbone to the CSRs

1
litedram/gen-src/wrapper-self-init.vhdl
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@ -5,7 +5,6 @@ use std.textio.all;


library work; library work;
use work.wishbone_types.all; use work.wishbone_types.all;
use work.sim_console.all;


entity litedram_wrapper is entity litedram_wrapper is
generic ( generic (

72
litedram/generated/arty/litedram-initmem.vhdl
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@ -0,0 +1,72 @@
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use std.textio.all;

library work;
use work.wishbone_types.all;

entity dram_init_mem is
port (
clk : in std_ulogic;
wb_in : in wb_io_master_out;
wb_out : out wb_io_slave_out
);
end entity dram_init_mem;

architecture rtl of dram_init_mem is

constant INIT_RAM_SIZE : integer := 16384;
constant INIT_RAM_ABITS :integer := 14;
constant INIT_RAM_FILE : string := "litedram_core.init";

type ram_t is array(0 to (INIT_RAM_SIZE / 4) - 1) of std_logic_vector(31 downto 0);

impure function init_load_ram(name : string) return ram_t is
file ram_file : text open read_mode is name;
variable temp_word : std_logic_vector(63 downto 0);
variable temp_ram : ram_t := (others => (others => '0'));
variable ram_line : line;
begin
for i in 0 to (INIT_RAM_SIZE/8)-1 loop
exit when endfile(ram_file);
readline(ram_file, ram_line);
hread(ram_line, temp_word);
temp_ram(i*2) := temp_word(31 downto 0);
temp_ram(i*2+1) := temp_word(63 downto 32);
end loop;
return temp_ram;
end function;

signal init_ram : ram_t := init_load_ram(INIT_RAM_FILE);

attribute ram_style : string;
attribute ram_style of init_ram: signal is "block";

begin

init_ram_0: process(clk)
variable adr : integer;
begin
if rising_edge(clk) then
wb_out.ack <= '0';
if (wb_in.cyc and wb_in.stb) = '1' then
adr := to_integer((unsigned(wb_in.adr(INIT_RAM_ABITS-1 downto 2))));
if wb_in.we = '0' then
wb_out.dat <= init_ram(adr);
else
for i in 0 to 3 loop
if wb_in.sel(i) = '1' then
init_ram(adr)(((i + 1) * 8) - 1 downto i * 8) <=
wb_in.dat(((i + 1) * 8) - 1 downto i * 8);
end if;
end loop;
end if;
wb_out.ack <= '1';
end if;
end if;
end process;

wb_out.stall <= '0';

end architecture rtl;

58
litedram/generated/arty/litedram-wrapper.vhdl
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@ -5,7 +5,6 @@ use std.textio.all;


library work; library work;
use work.wishbone_types.all; use work.wishbone_types.all;
use work.sim_console.all;


entity litedram_wrapper is entity litedram_wrapper is
generic ( generic (
@ -136,61 +135,18 @@ architecture behaviour of litedram_wrapper is
type state_t is (CMD, MWRITE, MREAD); type state_t is (CMD, MWRITE, MREAD);
signal state : state_t; signal state : state_t;


constant INIT_RAM_SIZE : integer := 16384;
constant INIT_RAM_ABITS :integer := 14;
constant INIT_RAM_FILE : string := "litedram_core.init";

type ram_t is array(0 to (INIT_RAM_SIZE / 4) - 1) of std_logic_vector(31 downto 0);

impure function init_load_ram(name : string) return ram_t is
file ram_file : text open read_mode is name;
variable temp_word : std_logic_vector(63 downto 0);
variable temp_ram : ram_t := (others => (others => '0'));
variable ram_line : line;
begin
for i in 0 to (INIT_RAM_SIZE/8)-1 loop
exit when endfile(ram_file);
readline(ram_file, ram_line);
hread(ram_line, temp_word);
temp_ram(i*2) := temp_word(31 downto 0);
temp_ram(i*2+1) := temp_word(63 downto 32);
end loop;
return temp_ram;
end function;

signal init_ram : ram_t := init_load_ram(INIT_RAM_FILE);

attribute ram_style : string;
attribute ram_style of init_ram: signal is "block";

begin begin


-- alternate core reset address set when DRAM is not initialized. -- alternate core reset address set when DRAM is not initialized.
core_alt_reset <= not init_done; core_alt_reset <= not init_done;


-- BRAM Memory slave. TODO: Pipeline it with an output buffer -- Init code BRAM memory slave
-- to improve timing init_ram_0: entity work.dram_init_mem
init_ram_0: process(system_clk) port map(
variable adr : integer; clk => system_clk,
begin wb_in => wb_init_in,
if rising_edge(system_clk) then wb_out => wb_init_out
wb_init_out.ack <= '0'; );
if (wb_init_in.cyc and wb_init_in.stb) = '1' then
adr := to_integer((unsigned(wb_init_in.adr(INIT_RAM_ABITS-1 downto 2))));
if wb_init_in.we = '0' then
wb_init_out.dat <= init_ram(adr);
else
for i in 0 to 3 loop
if wb_init_in.sel(i) = '1' then
init_ram(adr)(((i + 1) * 8) - 1 downto i * 8) <=
wb_init_in.dat(((i + 1) * 8) - 1 downto i * 8);
end if;
end loop;
end if;
wb_init_out.ack <= '1';
end if;
end if;
end process;


-- --
-- Control bus wishbone: This muxes the wishbone to the CSRs -- Control bus wishbone: This muxes the wishbone to the CSRs

110
litedram/generated/arty/litedram_core.v
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@ -1,5 +1,5 @@
//-------------------------------------------------------------------------------- //--------------------------------------------------------------------------------
// Auto-generated by Migen (0d16e03) & LiteX (3391398a) on 2020-05-16 19:06:01 // Auto-generated by Migen (0d16e03) & LiteX (3391398a) on 2020-05-21 19:21:27
//-------------------------------------------------------------------------------- //--------------------------------------------------------------------------------
module litedram_core( module litedram_core(
input wire clk, input wire clk,
@ -831,13 +831,13 @@ reg litedramcore_bankmachine0_row_open = 1'd0;
reg litedramcore_bankmachine0_row_close = 1'd0; reg litedramcore_bankmachine0_row_close = 1'd0;
reg litedramcore_bankmachine0_row_col_n_addr_sel = 1'd0; reg litedramcore_bankmachine0_row_col_n_addr_sel = 1'd0;
wire litedramcore_bankmachine0_twtpcon_valid; wire litedramcore_bankmachine0_twtpcon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine0_twtpcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine0_twtpcon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine0_twtpcon_count = 3'd0; reg [2:0] litedramcore_bankmachine0_twtpcon_count = 3'd0;
wire litedramcore_bankmachine0_trccon_valid; wire litedramcore_bankmachine0_trccon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine0_trccon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine0_trccon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine0_trccon_count = 3'd0; reg [2:0] litedramcore_bankmachine0_trccon_count = 3'd0;
wire litedramcore_bankmachine0_trascon_valid; wire litedramcore_bankmachine0_trascon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine0_trascon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine0_trascon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine0_trascon_count = 3'd0; reg [2:0] litedramcore_bankmachine0_trascon_count = 3'd0;
wire litedramcore_bankmachine1_req_valid; wire litedramcore_bankmachine1_req_valid;
wire litedramcore_bankmachine1_req_ready; wire litedramcore_bankmachine1_req_ready;
@ -915,13 +915,13 @@ reg litedramcore_bankmachine1_row_open = 1'd0;
reg litedramcore_bankmachine1_row_close = 1'd0; reg litedramcore_bankmachine1_row_close = 1'd0;
reg litedramcore_bankmachine1_row_col_n_addr_sel = 1'd0; reg litedramcore_bankmachine1_row_col_n_addr_sel = 1'd0;
wire litedramcore_bankmachine1_twtpcon_valid; wire litedramcore_bankmachine1_twtpcon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine1_twtpcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine1_twtpcon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine1_twtpcon_count = 3'd0; reg [2:0] litedramcore_bankmachine1_twtpcon_count = 3'd0;
wire litedramcore_bankmachine1_trccon_valid; wire litedramcore_bankmachine1_trccon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine1_trccon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine1_trccon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine1_trccon_count = 3'd0; reg [2:0] litedramcore_bankmachine1_trccon_count = 3'd0;
wire litedramcore_bankmachine1_trascon_valid; wire litedramcore_bankmachine1_trascon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine1_trascon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine1_trascon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine1_trascon_count = 3'd0; reg [2:0] litedramcore_bankmachine1_trascon_count = 3'd0;
wire litedramcore_bankmachine2_req_valid; wire litedramcore_bankmachine2_req_valid;
wire litedramcore_bankmachine2_req_ready; wire litedramcore_bankmachine2_req_ready;
@ -999,13 +999,13 @@ reg litedramcore_bankmachine2_row_open = 1'd0;
reg litedramcore_bankmachine2_row_close = 1'd0; reg litedramcore_bankmachine2_row_close = 1'd0;
reg litedramcore_bankmachine2_row_col_n_addr_sel = 1'd0; reg litedramcore_bankmachine2_row_col_n_addr_sel = 1'd0;
wire litedramcore_bankmachine2_twtpcon_valid; wire litedramcore_bankmachine2_twtpcon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine2_twtpcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine2_twtpcon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine2_twtpcon_count = 3'd0; reg [2:0] litedramcore_bankmachine2_twtpcon_count = 3'd0;
wire litedramcore_bankmachine2_trccon_valid; wire litedramcore_bankmachine2_trccon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine2_trccon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine2_trccon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine2_trccon_count = 3'd0; reg [2:0] litedramcore_bankmachine2_trccon_count = 3'd0;
wire litedramcore_bankmachine2_trascon_valid; wire litedramcore_bankmachine2_trascon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine2_trascon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine2_trascon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine2_trascon_count = 3'd0; reg [2:0] litedramcore_bankmachine2_trascon_count = 3'd0;
wire litedramcore_bankmachine3_req_valid; wire litedramcore_bankmachine3_req_valid;
wire litedramcore_bankmachine3_req_ready; wire litedramcore_bankmachine3_req_ready;
@ -1083,13 +1083,13 @@ reg litedramcore_bankmachine3_row_open = 1'd0;
reg litedramcore_bankmachine3_row_close = 1'd0; reg litedramcore_bankmachine3_row_close = 1'd0;
reg litedramcore_bankmachine3_row_col_n_addr_sel = 1'd0; reg litedramcore_bankmachine3_row_col_n_addr_sel = 1'd0;
wire litedramcore_bankmachine3_twtpcon_valid; wire litedramcore_bankmachine3_twtpcon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine3_twtpcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine3_twtpcon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine3_twtpcon_count = 3'd0; reg [2:0] litedramcore_bankmachine3_twtpcon_count = 3'd0;
wire litedramcore_bankmachine3_trccon_valid; wire litedramcore_bankmachine3_trccon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine3_trccon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine3_trccon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine3_trccon_count = 3'd0; reg [2:0] litedramcore_bankmachine3_trccon_count = 3'd0;
wire litedramcore_bankmachine3_trascon_valid; wire litedramcore_bankmachine3_trascon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine3_trascon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine3_trascon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine3_trascon_count = 3'd0; reg [2:0] litedramcore_bankmachine3_trascon_count = 3'd0;
wire litedramcore_bankmachine4_req_valid; wire litedramcore_bankmachine4_req_valid;
wire litedramcore_bankmachine4_req_ready; wire litedramcore_bankmachine4_req_ready;
@ -1167,13 +1167,13 @@ reg litedramcore_bankmachine4_row_open = 1'd0;
reg litedramcore_bankmachine4_row_close = 1'd0; reg litedramcore_bankmachine4_row_close = 1'd0;
reg litedramcore_bankmachine4_row_col_n_addr_sel = 1'd0; reg litedramcore_bankmachine4_row_col_n_addr_sel = 1'd0;
wire litedramcore_bankmachine4_twtpcon_valid; wire litedramcore_bankmachine4_twtpcon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine4_twtpcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine4_twtpcon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine4_twtpcon_count = 3'd0; reg [2:0] litedramcore_bankmachine4_twtpcon_count = 3'd0;
wire litedramcore_bankmachine4_trccon_valid; wire litedramcore_bankmachine4_trccon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine4_trccon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine4_trccon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine4_trccon_count = 3'd0; reg [2:0] litedramcore_bankmachine4_trccon_count = 3'd0;
wire litedramcore_bankmachine4_trascon_valid; wire litedramcore_bankmachine4_trascon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine4_trascon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine4_trascon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine4_trascon_count = 3'd0; reg [2:0] litedramcore_bankmachine4_trascon_count = 3'd0;
wire litedramcore_bankmachine5_req_valid; wire litedramcore_bankmachine5_req_valid;
wire litedramcore_bankmachine5_req_ready; wire litedramcore_bankmachine5_req_ready;
@ -1251,13 +1251,13 @@ reg litedramcore_bankmachine5_row_open = 1'd0;
reg litedramcore_bankmachine5_row_close = 1'd0; reg litedramcore_bankmachine5_row_close = 1'd0;
reg litedramcore_bankmachine5_row_col_n_addr_sel = 1'd0; reg litedramcore_bankmachine5_row_col_n_addr_sel = 1'd0;
wire litedramcore_bankmachine5_twtpcon_valid; wire litedramcore_bankmachine5_twtpcon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine5_twtpcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine5_twtpcon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine5_twtpcon_count = 3'd0; reg [2:0] litedramcore_bankmachine5_twtpcon_count = 3'd0;
wire litedramcore_bankmachine5_trccon_valid; wire litedramcore_bankmachine5_trccon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine5_trccon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine5_trccon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine5_trccon_count = 3'd0; reg [2:0] litedramcore_bankmachine5_trccon_count = 3'd0;
wire litedramcore_bankmachine5_trascon_valid; wire litedramcore_bankmachine5_trascon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine5_trascon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine5_trascon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine5_trascon_count = 3'd0; reg [2:0] litedramcore_bankmachine5_trascon_count = 3'd0;
wire litedramcore_bankmachine6_req_valid; wire litedramcore_bankmachine6_req_valid;
wire litedramcore_bankmachine6_req_ready; wire litedramcore_bankmachine6_req_ready;
@ -1335,13 +1335,13 @@ reg litedramcore_bankmachine6_row_open = 1'd0;
reg litedramcore_bankmachine6_row_close = 1'd0; reg litedramcore_bankmachine6_row_close = 1'd0;
reg litedramcore_bankmachine6_row_col_n_addr_sel = 1'd0; reg litedramcore_bankmachine6_row_col_n_addr_sel = 1'd0;
wire litedramcore_bankmachine6_twtpcon_valid; wire litedramcore_bankmachine6_twtpcon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine6_twtpcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine6_twtpcon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine6_twtpcon_count = 3'd0; reg [2:0] litedramcore_bankmachine6_twtpcon_count = 3'd0;
wire litedramcore_bankmachine6_trccon_valid; wire litedramcore_bankmachine6_trccon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine6_trccon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine6_trccon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine6_trccon_count = 3'd0; reg [2:0] litedramcore_bankmachine6_trccon_count = 3'd0;
wire litedramcore_bankmachine6_trascon_valid; wire litedramcore_bankmachine6_trascon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine6_trascon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine6_trascon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine6_trascon_count = 3'd0; reg [2:0] litedramcore_bankmachine6_trascon_count = 3'd0;
wire litedramcore_bankmachine7_req_valid; wire litedramcore_bankmachine7_req_valid;
wire litedramcore_bankmachine7_req_ready; wire litedramcore_bankmachine7_req_ready;
@ -1419,13 +1419,13 @@ reg litedramcore_bankmachine7_row_open = 1'd0;
reg litedramcore_bankmachine7_row_close = 1'd0; reg litedramcore_bankmachine7_row_close = 1'd0;
reg litedramcore_bankmachine7_row_col_n_addr_sel = 1'd0; reg litedramcore_bankmachine7_row_col_n_addr_sel = 1'd0;
wire litedramcore_bankmachine7_twtpcon_valid; wire litedramcore_bankmachine7_twtpcon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine7_twtpcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine7_twtpcon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine7_twtpcon_count = 3'd0; reg [2:0] litedramcore_bankmachine7_twtpcon_count = 3'd0;
wire litedramcore_bankmachine7_trccon_valid; wire litedramcore_bankmachine7_trccon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine7_trccon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine7_trccon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine7_trccon_count = 3'd0; reg [2:0] litedramcore_bankmachine7_trccon_count = 3'd0;
wire litedramcore_bankmachine7_trascon_valid; wire litedramcore_bankmachine7_trascon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine7_trascon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine7_trascon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine7_trascon_count = 3'd0; reg [2:0] litedramcore_bankmachine7_trascon_count = 3'd0;
wire litedramcore_ras_allowed; wire litedramcore_ras_allowed;
wire litedramcore_cas_allowed; wire litedramcore_cas_allowed;
@ -1480,17 +1480,17 @@ reg litedramcore_steerer5 = 1'd1;
reg litedramcore_steerer6 = 1'd1; reg litedramcore_steerer6 = 1'd1;
reg litedramcore_steerer7 = 1'd1; reg litedramcore_steerer7 = 1'd1;
wire litedramcore_trrdcon_valid; wire litedramcore_trrdcon_valid;
(* dont_touch = "true" *) reg litedramcore_trrdcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_trrdcon_ready = 1'd0;
reg litedramcore_trrdcon_count = 1'd0; reg litedramcore_trrdcon_count = 1'd0;
wire litedramcore_tfawcon_valid; wire litedramcore_tfawcon_valid;
(* dont_touch = "true" *) reg litedramcore_tfawcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_tfawcon_ready = 1'd1;
wire [2:0] litedramcore_tfawcon_count; wire [2:0] litedramcore_tfawcon_count;
reg [4:0] litedramcore_tfawcon_window = 5'd0; reg [4:0] litedramcore_tfawcon_window = 5'd0;
wire litedramcore_tccdcon_valid; wire litedramcore_tccdcon_valid;
(* dont_touch = "true" *) reg litedramcore_tccdcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_tccdcon_ready = 1'd0;
reg litedramcore_tccdcon_count = 1'd0; reg litedramcore_tccdcon_count = 1'd0;
wire litedramcore_twtrcon_valid; wire litedramcore_twtrcon_valid;
(* dont_touch = "true" *) reg litedramcore_twtrcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_twtrcon_ready = 1'd0;
reg [2:0] litedramcore_twtrcon_count = 3'd0; reg [2:0] litedramcore_twtrcon_count = 3'd0;
wire litedramcore_read_available; wire litedramcore_read_available;
wire litedramcore_write_available; wire litedramcore_write_available;
@ -14764,11 +14764,11 @@ always @(posedge sys_clk) begin
litedramcore_bankmachine0_cmd_buffer_source_valid <= 1'd0; litedramcore_bankmachine0_cmd_buffer_source_valid <= 1'd0;
litedramcore_bankmachine0_row <= 14'd0; litedramcore_bankmachine0_row <= 14'd0;
litedramcore_bankmachine0_row_opened <= 1'd0; litedramcore_bankmachine0_row_opened <= 1'd0;
litedramcore_bankmachine0_twtpcon_ready <= 1'd1; litedramcore_bankmachine0_twtpcon_ready <= 1'd0;
litedramcore_bankmachine0_twtpcon_count <= 3'd0; litedramcore_bankmachine0_twtpcon_count <= 3'd0;
litedramcore_bankmachine0_trccon_ready <= 1'd1; litedramcore_bankmachine0_trccon_ready <= 1'd0;
litedramcore_bankmachine0_trccon_count <= 3'd0; litedramcore_bankmachine0_trccon_count <= 3'd0;
litedramcore_bankmachine0_trascon_ready <= 1'd1; litedramcore_bankmachine0_trascon_ready <= 1'd0;
litedramcore_bankmachine0_trascon_count <= 3'd0; litedramcore_bankmachine0_trascon_count <= 3'd0;
litedramcore_bankmachine1_cmd_buffer_lookahead_level <= 5'd0; litedramcore_bankmachine1_cmd_buffer_lookahead_level <= 5'd0;
litedramcore_bankmachine1_cmd_buffer_lookahead_produce <= 4'd0; litedramcore_bankmachine1_cmd_buffer_lookahead_produce <= 4'd0;
@ -14776,11 +14776,11 @@ always @(posedge sys_clk) begin
litedramcore_bankmachine1_cmd_buffer_source_valid <= 1'd0; litedramcore_bankmachine1_cmd_buffer_source_valid <= 1'd0;
litedramcore_bankmachine1_row <= 14'd0; litedramcore_bankmachine1_row <= 14'd0;
litedramcore_bankmachine1_row_opened <= 1'd0; litedramcore_bankmachine1_row_opened <= 1'd0;
litedramcore_bankmachine1_twtpcon_ready <= 1'd1; litedramcore_bankmachine1_twtpcon_ready <= 1'd0;
litedramcore_bankmachine1_twtpcon_count <= 3'd0; litedramcore_bankmachine1_twtpcon_count <= 3'd0;
litedramcore_bankmachine1_trccon_ready <= 1'd1; litedramcore_bankmachine1_trccon_ready <= 1'd0;
litedramcore_bankmachine1_trccon_count <= 3'd0; litedramcore_bankmachine1_trccon_count <= 3'd0;
litedramcore_bankmachine1_trascon_ready <= 1'd1; litedramcore_bankmachine1_trascon_ready <= 1'd0;
litedramcore_bankmachine1_trascon_count <= 3'd0; litedramcore_bankmachine1_trascon_count <= 3'd0;
litedramcore_bankmachine2_cmd_buffer_lookahead_level <= 5'd0; litedramcore_bankmachine2_cmd_buffer_lookahead_level <= 5'd0;
litedramcore_bankmachine2_cmd_buffer_lookahead_produce <= 4'd0; litedramcore_bankmachine2_cmd_buffer_lookahead_produce <= 4'd0;
@ -14788,11 +14788,11 @@ always @(posedge sys_clk) begin
litedramcore_bankmachine2_cmd_buffer_source_valid <= 1'd0; litedramcore_bankmachine2_cmd_buffer_source_valid <= 1'd0;
litedramcore_bankmachine2_row <= 14'd0; litedramcore_bankmachine2_row <= 14'd0;
litedramcore_bankmachine2_row_opened <= 1'd0; litedramcore_bankmachine2_row_opened <= 1'd0;
litedramcore_bankmachine2_twtpcon_ready <= 1'd1; litedramcore_bankmachine2_twtpcon_ready <= 1'd0;
litedramcore_bankmachine2_twtpcon_count <= 3'd0; litedramcore_bankmachine2_twtpcon_count <= 3'd0;
litedramcore_bankmachine2_trccon_ready <= 1'd1; litedramcore_bankmachine2_trccon_ready <= 1'd0;
litedramcore_bankmachine2_trccon_count <= 3'd0; litedramcore_bankmachine2_trccon_count <= 3'd0;
litedramcore_bankmachine2_trascon_ready <= 1'd1; litedramcore_bankmachine2_trascon_ready <= 1'd0;
litedramcore_bankmachine2_trascon_count <= 3'd0; litedramcore_bankmachine2_trascon_count <= 3'd0;
litedramcore_bankmachine3_cmd_buffer_lookahead_level <= 5'd0; litedramcore_bankmachine3_cmd_buffer_lookahead_level <= 5'd0;
litedramcore_bankmachine3_cmd_buffer_lookahead_produce <= 4'd0; litedramcore_bankmachine3_cmd_buffer_lookahead_produce <= 4'd0;
@ -14800,11 +14800,11 @@ always @(posedge sys_clk) begin
litedramcore_bankmachine3_cmd_buffer_source_valid <= 1'd0; litedramcore_bankmachine3_cmd_buffer_source_valid <= 1'd0;
litedramcore_bankmachine3_row <= 14'd0; litedramcore_bankmachine3_row <= 14'd0;
litedramcore_bankmachine3_row_opened <= 1'd0; litedramcore_bankmachine3_row_opened <= 1'd0;
litedramcore_bankmachine3_twtpcon_ready <= 1'd1; litedramcore_bankmachine3_twtpcon_ready <= 1'd0;
litedramcore_bankmachine3_twtpcon_count <= 3'd0; litedramcore_bankmachine3_twtpcon_count <= 3'd0;
litedramcore_bankmachine3_trccon_ready <= 1'd1; litedramcore_bankmachine3_trccon_ready <= 1'd0;
litedramcore_bankmachine3_trccon_count <= 3'd0; litedramcore_bankmachine3_trccon_count <= 3'd0;
litedramcore_bankmachine3_trascon_ready <= 1'd1; litedramcore_bankmachine3_trascon_ready <= 1'd0;
litedramcore_bankmachine3_trascon_count <= 3'd0; litedramcore_bankmachine3_trascon_count <= 3'd0;
litedramcore_bankmachine4_cmd_buffer_lookahead_level <= 5'd0; litedramcore_bankmachine4_cmd_buffer_lookahead_level <= 5'd0;
litedramcore_bankmachine4_cmd_buffer_lookahead_produce <= 4'd0; litedramcore_bankmachine4_cmd_buffer_lookahead_produce <= 4'd0;
@ -14812,11 +14812,11 @@ always @(posedge sys_clk) begin
litedramcore_bankmachine4_cmd_buffer_source_valid <= 1'd0; litedramcore_bankmachine4_cmd_buffer_source_valid <= 1'd0;
litedramcore_bankmachine4_row <= 14'd0; litedramcore_bankmachine4_row <= 14'd0;
litedramcore_bankmachine4_row_opened <= 1'd0; litedramcore_bankmachine4_row_opened <= 1'd0;
litedramcore_bankmachine4_twtpcon_ready <= 1'd1; litedramcore_bankmachine4_twtpcon_ready <= 1'd0;
litedramcore_bankmachine4_twtpcon_count <= 3'd0; litedramcore_bankmachine4_twtpcon_count <= 3'd0;
litedramcore_bankmachine4_trccon_ready <= 1'd1; litedramcore_bankmachine4_trccon_ready <= 1'd0;
litedramcore_bankmachine4_trccon_count <= 3'd0; litedramcore_bankmachine4_trccon_count <= 3'd0;
litedramcore_bankmachine4_trascon_ready <= 1'd1; litedramcore_bankmachine4_trascon_ready <= 1'd0;
litedramcore_bankmachine4_trascon_count <= 3'd0; litedramcore_bankmachine4_trascon_count <= 3'd0;
litedramcore_bankmachine5_cmd_buffer_lookahead_level <= 5'd0; litedramcore_bankmachine5_cmd_buffer_lookahead_level <= 5'd0;
litedramcore_bankmachine5_cmd_buffer_lookahead_produce <= 4'd0; litedramcore_bankmachine5_cmd_buffer_lookahead_produce <= 4'd0;
@ -14824,11 +14824,11 @@ always @(posedge sys_clk) begin
litedramcore_bankmachine5_cmd_buffer_source_valid <= 1'd0; litedramcore_bankmachine5_cmd_buffer_source_valid <= 1'd0;
litedramcore_bankmachine5_row <= 14'd0; litedramcore_bankmachine5_row <= 14'd0;
litedramcore_bankmachine5_row_opened <= 1'd0; litedramcore_bankmachine5_row_opened <= 1'd0;
litedramcore_bankmachine5_twtpcon_ready <= 1'd1; litedramcore_bankmachine5_twtpcon_ready <= 1'd0;
litedramcore_bankmachine5_twtpcon_count <= 3'd0; litedramcore_bankmachine5_twtpcon_count <= 3'd0;
litedramcore_bankmachine5_trccon_ready <= 1'd1; litedramcore_bankmachine5_trccon_ready <= 1'd0;
litedramcore_bankmachine5_trccon_count <= 3'd0; litedramcore_bankmachine5_trccon_count <= 3'd0;
litedramcore_bankmachine5_trascon_ready <= 1'd1; litedramcore_bankmachine5_trascon_ready <= 1'd0;
litedramcore_bankmachine5_trascon_count <= 3'd0; litedramcore_bankmachine5_trascon_count <= 3'd0;
litedramcore_bankmachine6_cmd_buffer_lookahead_level <= 5'd0; litedramcore_bankmachine6_cmd_buffer_lookahead_level <= 5'd0;
litedramcore_bankmachine6_cmd_buffer_lookahead_produce <= 4'd0; litedramcore_bankmachine6_cmd_buffer_lookahead_produce <= 4'd0;
@ -14836,11 +14836,11 @@ always @(posedge sys_clk) begin
litedramcore_bankmachine6_cmd_buffer_source_valid <= 1'd0; litedramcore_bankmachine6_cmd_buffer_source_valid <= 1'd0;
litedramcore_bankmachine6_row <= 14'd0; litedramcore_bankmachine6_row <= 14'd0;
litedramcore_bankmachine6_row_opened <= 1'd0; litedramcore_bankmachine6_row_opened <= 1'd0;
litedramcore_bankmachine6_twtpcon_ready <= 1'd1; litedramcore_bankmachine6_twtpcon_ready <= 1'd0;
litedramcore_bankmachine6_twtpcon_count <= 3'd0; litedramcore_bankmachine6_twtpcon_count <= 3'd0;
litedramcore_bankmachine6_trccon_ready <= 1'd1; litedramcore_bankmachine6_trccon_ready <= 1'd0;
litedramcore_bankmachine6_trccon_count <= 3'd0; litedramcore_bankmachine6_trccon_count <= 3'd0;
litedramcore_bankmachine6_trascon_ready <= 1'd1; litedramcore_bankmachine6_trascon_ready <= 1'd0;
litedramcore_bankmachine6_trascon_count <= 3'd0; litedramcore_bankmachine6_trascon_count <= 3'd0;
litedramcore_bankmachine7_cmd_buffer_lookahead_level <= 5'd0; litedramcore_bankmachine7_cmd_buffer_lookahead_level <= 5'd0;
litedramcore_bankmachine7_cmd_buffer_lookahead_produce <= 4'd0; litedramcore_bankmachine7_cmd_buffer_lookahead_produce <= 4'd0;
@ -14848,21 +14848,21 @@ always @(posedge sys_clk) begin
litedramcore_bankmachine7_cmd_buffer_source_valid <= 1'd0; litedramcore_bankmachine7_cmd_buffer_source_valid <= 1'd0;
litedramcore_bankmachine7_row <= 14'd0; litedramcore_bankmachine7_row <= 14'd0;
litedramcore_bankmachine7_row_opened <= 1'd0; litedramcore_bankmachine7_row_opened <= 1'd0;
litedramcore_bankmachine7_twtpcon_ready <= 1'd1; litedramcore_bankmachine7_twtpcon_ready <= 1'd0;
litedramcore_bankmachine7_twtpcon_count <= 3'd0; litedramcore_bankmachine7_twtpcon_count <= 3'd0;
litedramcore_bankmachine7_trccon_ready <= 1'd1; litedramcore_bankmachine7_trccon_ready <= 1'd0;
litedramcore_bankmachine7_trccon_count <= 3'd0; litedramcore_bankmachine7_trccon_count <= 3'd0;
litedramcore_bankmachine7_trascon_ready <= 1'd1; litedramcore_bankmachine7_trascon_ready <= 1'd0;
litedramcore_bankmachine7_trascon_count <= 3'd0; litedramcore_bankmachine7_trascon_count <= 3'd0;
litedramcore_choose_cmd_grant <= 3'd0; litedramcore_choose_cmd_grant <= 3'd0;
litedramcore_choose_req_grant <= 3'd0; litedramcore_choose_req_grant <= 3'd0;
litedramcore_trrdcon_ready <= 1'd1; litedramcore_trrdcon_ready <= 1'd0;
litedramcore_trrdcon_count <= 1'd0; litedramcore_trrdcon_count <= 1'd0;
litedramcore_tfawcon_ready <= 1'd1; litedramcore_tfawcon_ready <= 1'd1;
litedramcore_tfawcon_window <= 5'd0; litedramcore_tfawcon_window <= 5'd0;
litedramcore_tccdcon_ready <= 1'd1; litedramcore_tccdcon_ready <= 1'd0;
litedramcore_tccdcon_count <= 1'd0; litedramcore_tccdcon_count <= 1'd0;
litedramcore_twtrcon_ready <= 1'd1; litedramcore_twtrcon_ready <= 1'd0;
litedramcore_twtrcon_count <= 3'd0; litedramcore_twtrcon_count <= 3'd0;
litedramcore_time0 <= 5'd0; litedramcore_time0 <= 5'd0;
litedramcore_time1 <= 4'd0; litedramcore_time1 <= 4'd0;

72
litedram/generated/nexys-video/litedram-initmem.vhdl
Unescape Escape View File

@ -0,0 +1,72 @@
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use std.textio.all;

library work;
use work.wishbone_types.all;

entity dram_init_mem is
port (
clk : in std_ulogic;
wb_in : in wb_io_master_out;
wb_out : out wb_io_slave_out
);
end entity dram_init_mem;

architecture rtl of dram_init_mem is

constant INIT_RAM_SIZE : integer := 16384;
constant INIT_RAM_ABITS :integer := 14;
constant INIT_RAM_FILE : string := "litedram_core.init";

type ram_t is array(0 to (INIT_RAM_SIZE / 4) - 1) of std_logic_vector(31 downto 0);

impure function init_load_ram(name : string) return ram_t is
file ram_file : text open read_mode is name;
variable temp_word : std_logic_vector(63 downto 0);
variable temp_ram : ram_t := (others => (others => '0'));
variable ram_line : line;
begin
for i in 0 to (INIT_RAM_SIZE/8)-1 loop
exit when endfile(ram_file);
readline(ram_file, ram_line);
hread(ram_line, temp_word);
temp_ram(i*2) := temp_word(31 downto 0);
temp_ram(i*2+1) := temp_word(63 downto 32);
end loop;
return temp_ram;
end function;

signal init_ram : ram_t := init_load_ram(INIT_RAM_FILE);

attribute ram_style : string;
attribute ram_style of init_ram: signal is "block";

begin

init_ram_0: process(clk)
variable adr : integer;
begin
if rising_edge(clk) then
wb_out.ack <= '0';
if (wb_in.cyc and wb_in.stb) = '1' then
adr := to_integer((unsigned(wb_in.adr(INIT_RAM_ABITS-1 downto 2))));
if wb_in.we = '0' then
wb_out.dat <= init_ram(adr);
else
for i in 0 to 3 loop
if wb_in.sel(i) = '1' then
init_ram(adr)(((i + 1) * 8) - 1 downto i * 8) <=
wb_in.dat(((i + 1) * 8) - 1 downto i * 8);
end if;
end loop;
end if;
wb_out.ack <= '1';
end if;
end if;
end process;

wb_out.stall <= '0';

end architecture rtl;

58
litedram/generated/nexys-video/litedram-wrapper.vhdl
Unescape Escape View File

@ -5,7 +5,6 @@ use std.textio.all;


library work; library work;
use work.wishbone_types.all; use work.wishbone_types.all;
use work.sim_console.all;


entity litedram_wrapper is entity litedram_wrapper is
generic ( generic (
@ -136,61 +135,18 @@ architecture behaviour of litedram_wrapper is
type state_t is (CMD, MWRITE, MREAD); type state_t is (CMD, MWRITE, MREAD);
signal state : state_t; signal state : state_t;


constant INIT_RAM_SIZE : integer := 16384;
constant INIT_RAM_ABITS :integer := 14;
constant INIT_RAM_FILE : string := "litedram_core.init";

type ram_t is array(0 to (INIT_RAM_SIZE / 4) - 1) of std_logic_vector(31 downto 0);

impure function init_load_ram(name : string) return ram_t is
file ram_file : text open read_mode is name;
variable temp_word : std_logic_vector(63 downto 0);
variable temp_ram : ram_t := (others => (others => '0'));
variable ram_line : line;
begin
for i in 0 to (INIT_RAM_SIZE/8)-1 loop
exit when endfile(ram_file);
readline(ram_file, ram_line);
hread(ram_line, temp_word);
temp_ram(i*2) := temp_word(31 downto 0);
temp_ram(i*2+1) := temp_word(63 downto 32);
end loop;
return temp_ram;
end function;

signal init_ram : ram_t := init_load_ram(INIT_RAM_FILE);

attribute ram_style : string;
attribute ram_style of init_ram: signal is "block";

begin begin


-- alternate core reset address set when DRAM is not initialized. -- alternate core reset address set when DRAM is not initialized.
core_alt_reset <= not init_done; core_alt_reset <= not init_done;


-- BRAM Memory slave. TODO: Pipeline it with an output buffer -- Init code BRAM memory slave
-- to improve timing init_ram_0: entity work.dram_init_mem
init_ram_0: process(system_clk) port map(
variable adr : integer; clk => system_clk,
begin wb_in => wb_init_in,
if rising_edge(system_clk) then wb_out => wb_init_out
wb_init_out.ack <= '0'; );
if (wb_init_in.cyc and wb_init_in.stb) = '1' then
adr := to_integer((unsigned(wb_init_in.adr(INIT_RAM_ABITS-1 downto 2))));
if wb_init_in.we = '0' then
wb_init_out.dat <= init_ram(adr);
else
for i in 0 to 3 loop
if wb_init_in.sel(i) = '1' then
init_ram(adr)(((i + 1) * 8) - 1 downto i * 8) <=
wb_init_in.dat(((i + 1) * 8) - 1 downto i * 8);
end if;
end loop;
end if;
wb_init_out.ack <= '1';
end if;
end if;
end process;


-- --
-- Control bus wishbone: This muxes the wishbone to the CSRs -- Control bus wishbone: This muxes the wishbone to the CSRs

110
litedram/generated/nexys-video/litedram_core.v
Unescape Escape View File

@ -1,5 +1,5 @@
//-------------------------------------------------------------------------------- //--------------------------------------------------------------------------------
// Auto-generated by Migen (0d16e03) & LiteX (3391398a) on 2020-05-16 19:06:03 // Auto-generated by Migen (0d16e03) & LiteX (3391398a) on 2020-05-21 19:21:29
//-------------------------------------------------------------------------------- //--------------------------------------------------------------------------------
module litedram_core( module litedram_core(
input wire clk, input wire clk,
@ -831,13 +831,13 @@ reg litedramcore_bankmachine0_row_open = 1'd0;
reg litedramcore_bankmachine0_row_close = 1'd0; reg litedramcore_bankmachine0_row_close = 1'd0;
reg litedramcore_bankmachine0_row_col_n_addr_sel = 1'd0; reg litedramcore_bankmachine0_row_col_n_addr_sel = 1'd0;
wire litedramcore_bankmachine0_twtpcon_valid; wire litedramcore_bankmachine0_twtpcon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine0_twtpcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine0_twtpcon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine0_twtpcon_count = 3'd0; reg [2:0] litedramcore_bankmachine0_twtpcon_count = 3'd0;
wire litedramcore_bankmachine0_trccon_valid; wire litedramcore_bankmachine0_trccon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine0_trccon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine0_trccon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine0_trccon_count = 3'd0; reg [2:0] litedramcore_bankmachine0_trccon_count = 3'd0;
wire litedramcore_bankmachine0_trascon_valid; wire litedramcore_bankmachine0_trascon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine0_trascon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine0_trascon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine0_trascon_count = 3'd0; reg [2:0] litedramcore_bankmachine0_trascon_count = 3'd0;
wire litedramcore_bankmachine1_req_valid; wire litedramcore_bankmachine1_req_valid;
wire litedramcore_bankmachine1_req_ready; wire litedramcore_bankmachine1_req_ready;
@ -915,13 +915,13 @@ reg litedramcore_bankmachine1_row_open = 1'd0;
reg litedramcore_bankmachine1_row_close = 1'd0; reg litedramcore_bankmachine1_row_close = 1'd0;
reg litedramcore_bankmachine1_row_col_n_addr_sel = 1'd0; reg litedramcore_bankmachine1_row_col_n_addr_sel = 1'd0;
wire litedramcore_bankmachine1_twtpcon_valid; wire litedramcore_bankmachine1_twtpcon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine1_twtpcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine1_twtpcon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine1_twtpcon_count = 3'd0; reg [2:0] litedramcore_bankmachine1_twtpcon_count = 3'd0;
wire litedramcore_bankmachine1_trccon_valid; wire litedramcore_bankmachine1_trccon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine1_trccon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine1_trccon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine1_trccon_count = 3'd0; reg [2:0] litedramcore_bankmachine1_trccon_count = 3'd0;
wire litedramcore_bankmachine1_trascon_valid; wire litedramcore_bankmachine1_trascon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine1_trascon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine1_trascon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine1_trascon_count = 3'd0; reg [2:0] litedramcore_bankmachine1_trascon_count = 3'd0;
wire litedramcore_bankmachine2_req_valid; wire litedramcore_bankmachine2_req_valid;
wire litedramcore_bankmachine2_req_ready; wire litedramcore_bankmachine2_req_ready;
@ -999,13 +999,13 @@ reg litedramcore_bankmachine2_row_open = 1'd0;
reg litedramcore_bankmachine2_row_close = 1'd0; reg litedramcore_bankmachine2_row_close = 1'd0;
reg litedramcore_bankmachine2_row_col_n_addr_sel = 1'd0; reg litedramcore_bankmachine2_row_col_n_addr_sel = 1'd0;
wire litedramcore_bankmachine2_twtpcon_valid; wire litedramcore_bankmachine2_twtpcon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine2_twtpcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine2_twtpcon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine2_twtpcon_count = 3'd0; reg [2:0] litedramcore_bankmachine2_twtpcon_count = 3'd0;
wire litedramcore_bankmachine2_trccon_valid; wire litedramcore_bankmachine2_trccon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine2_trccon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine2_trccon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine2_trccon_count = 3'd0; reg [2:0] litedramcore_bankmachine2_trccon_count = 3'd0;
wire litedramcore_bankmachine2_trascon_valid; wire litedramcore_bankmachine2_trascon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine2_trascon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine2_trascon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine2_trascon_count = 3'd0; reg [2:0] litedramcore_bankmachine2_trascon_count = 3'd0;
wire litedramcore_bankmachine3_req_valid; wire litedramcore_bankmachine3_req_valid;
wire litedramcore_bankmachine3_req_ready; wire litedramcore_bankmachine3_req_ready;
@ -1083,13 +1083,13 @@ reg litedramcore_bankmachine3_row_open = 1'd0;
reg litedramcore_bankmachine3_row_close = 1'd0; reg litedramcore_bankmachine3_row_close = 1'd0;
reg litedramcore_bankmachine3_row_col_n_addr_sel = 1'd0; reg litedramcore_bankmachine3_row_col_n_addr_sel = 1'd0;
wire litedramcore_bankmachine3_twtpcon_valid; wire litedramcore_bankmachine3_twtpcon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine3_twtpcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine3_twtpcon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine3_twtpcon_count = 3'd0; reg [2:0] litedramcore_bankmachine3_twtpcon_count = 3'd0;
wire litedramcore_bankmachine3_trccon_valid; wire litedramcore_bankmachine3_trccon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine3_trccon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine3_trccon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine3_trccon_count = 3'd0; reg [2:0] litedramcore_bankmachine3_trccon_count = 3'd0;
wire litedramcore_bankmachine3_trascon_valid; wire litedramcore_bankmachine3_trascon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine3_trascon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine3_trascon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine3_trascon_count = 3'd0; reg [2:0] litedramcore_bankmachine3_trascon_count = 3'd0;
wire litedramcore_bankmachine4_req_valid; wire litedramcore_bankmachine4_req_valid;
wire litedramcore_bankmachine4_req_ready; wire litedramcore_bankmachine4_req_ready;
@ -1167,13 +1167,13 @@ reg litedramcore_bankmachine4_row_open = 1'd0;
reg litedramcore_bankmachine4_row_close = 1'd0; reg litedramcore_bankmachine4_row_close = 1'd0;
reg litedramcore_bankmachine4_row_col_n_addr_sel = 1'd0; reg litedramcore_bankmachine4_row_col_n_addr_sel = 1'd0;
wire litedramcore_bankmachine4_twtpcon_valid; wire litedramcore_bankmachine4_twtpcon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine4_twtpcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine4_twtpcon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine4_twtpcon_count = 3'd0; reg [2:0] litedramcore_bankmachine4_twtpcon_count = 3'd0;
wire litedramcore_bankmachine4_trccon_valid; wire litedramcore_bankmachine4_trccon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine4_trccon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine4_trccon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine4_trccon_count = 3'd0; reg [2:0] litedramcore_bankmachine4_trccon_count = 3'd0;
wire litedramcore_bankmachine4_trascon_valid; wire litedramcore_bankmachine4_trascon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine4_trascon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine4_trascon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine4_trascon_count = 3'd0; reg [2:0] litedramcore_bankmachine4_trascon_count = 3'd0;
wire litedramcore_bankmachine5_req_valid; wire litedramcore_bankmachine5_req_valid;
wire litedramcore_bankmachine5_req_ready; wire litedramcore_bankmachine5_req_ready;
@ -1251,13 +1251,13 @@ reg litedramcore_bankmachine5_row_open = 1'd0;
reg litedramcore_bankmachine5_row_close = 1'd0; reg litedramcore_bankmachine5_row_close = 1'd0;
reg litedramcore_bankmachine5_row_col_n_addr_sel = 1'd0; reg litedramcore_bankmachine5_row_col_n_addr_sel = 1'd0;
wire litedramcore_bankmachine5_twtpcon_valid; wire litedramcore_bankmachine5_twtpcon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine5_twtpcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine5_twtpcon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine5_twtpcon_count = 3'd0; reg [2:0] litedramcore_bankmachine5_twtpcon_count = 3'd0;
wire litedramcore_bankmachine5_trccon_valid; wire litedramcore_bankmachine5_trccon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine5_trccon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine5_trccon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine5_trccon_count = 3'd0; reg [2:0] litedramcore_bankmachine5_trccon_count = 3'd0;
wire litedramcore_bankmachine5_trascon_valid; wire litedramcore_bankmachine5_trascon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine5_trascon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine5_trascon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine5_trascon_count = 3'd0; reg [2:0] litedramcore_bankmachine5_trascon_count = 3'd0;
wire litedramcore_bankmachine6_req_valid; wire litedramcore_bankmachine6_req_valid;
wire litedramcore_bankmachine6_req_ready; wire litedramcore_bankmachine6_req_ready;
@ -1335,13 +1335,13 @@ reg litedramcore_bankmachine6_row_open = 1'd0;
reg litedramcore_bankmachine6_row_close = 1'd0; reg litedramcore_bankmachine6_row_close = 1'd0;
reg litedramcore_bankmachine6_row_col_n_addr_sel = 1'd0; reg litedramcore_bankmachine6_row_col_n_addr_sel = 1'd0;
wire litedramcore_bankmachine6_twtpcon_valid; wire litedramcore_bankmachine6_twtpcon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine6_twtpcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine6_twtpcon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine6_twtpcon_count = 3'd0; reg [2:0] litedramcore_bankmachine6_twtpcon_count = 3'd0;
wire litedramcore_bankmachine6_trccon_valid; wire litedramcore_bankmachine6_trccon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine6_trccon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine6_trccon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine6_trccon_count = 3'd0; reg [2:0] litedramcore_bankmachine6_trccon_count = 3'd0;
wire litedramcore_bankmachine6_trascon_valid; wire litedramcore_bankmachine6_trascon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine6_trascon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine6_trascon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine6_trascon_count = 3'd0; reg [2:0] litedramcore_bankmachine6_trascon_count = 3'd0;
wire litedramcore_bankmachine7_req_valid; wire litedramcore_bankmachine7_req_valid;
wire litedramcore_bankmachine7_req_ready; wire litedramcore_bankmachine7_req_ready;
@ -1419,13 +1419,13 @@ reg litedramcore_bankmachine7_row_open = 1'd0;
reg litedramcore_bankmachine7_row_close = 1'd0; reg litedramcore_bankmachine7_row_close = 1'd0;
reg litedramcore_bankmachine7_row_col_n_addr_sel = 1'd0; reg litedramcore_bankmachine7_row_col_n_addr_sel = 1'd0;
wire litedramcore_bankmachine7_twtpcon_valid; wire litedramcore_bankmachine7_twtpcon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine7_twtpcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine7_twtpcon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine7_twtpcon_count = 3'd0; reg [2:0] litedramcore_bankmachine7_twtpcon_count = 3'd0;
wire litedramcore_bankmachine7_trccon_valid; wire litedramcore_bankmachine7_trccon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine7_trccon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine7_trccon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine7_trccon_count = 3'd0; reg [2:0] litedramcore_bankmachine7_trccon_count = 3'd0;
wire litedramcore_bankmachine7_trascon_valid; wire litedramcore_bankmachine7_trascon_valid;
(* dont_touch = "true" *) reg litedramcore_bankmachine7_trascon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_bankmachine7_trascon_ready = 1'd0;
reg [2:0] litedramcore_bankmachine7_trascon_count = 3'd0; reg [2:0] litedramcore_bankmachine7_trascon_count = 3'd0;
wire litedramcore_ras_allowed; wire litedramcore_ras_allowed;
wire litedramcore_cas_allowed; wire litedramcore_cas_allowed;
@ -1480,17 +1480,17 @@ reg litedramcore_steerer5 = 1'd1;
reg litedramcore_steerer6 = 1'd1; reg litedramcore_steerer6 = 1'd1;
reg litedramcore_steerer7 = 1'd1; reg litedramcore_steerer7 = 1'd1;
wire litedramcore_trrdcon_valid; wire litedramcore_trrdcon_valid;
(* dont_touch = "true" *) reg litedramcore_trrdcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_trrdcon_ready = 1'd0;
reg litedramcore_trrdcon_count = 1'd0; reg litedramcore_trrdcon_count = 1'd0;
wire litedramcore_tfawcon_valid; wire litedramcore_tfawcon_valid;
(* dont_touch = "true" *) reg litedramcore_tfawcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_tfawcon_ready = 1'd1;
wire [2:0] litedramcore_tfawcon_count; wire [2:0] litedramcore_tfawcon_count;
reg [4:0] litedramcore_tfawcon_window = 5'd0; reg [4:0] litedramcore_tfawcon_window = 5'd0;
wire litedramcore_tccdcon_valid; wire litedramcore_tccdcon_valid;
(* dont_touch = "true" *) reg litedramcore_tccdcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_tccdcon_ready = 1'd0;
reg litedramcore_tccdcon_count = 1'd0; reg litedramcore_tccdcon_count = 1'd0;
wire litedramcore_twtrcon_valid; wire litedramcore_twtrcon_valid;
(* dont_touch = "true" *) reg litedramcore_twtrcon_ready = 1'd1; (* dont_touch = "true" *) reg litedramcore_twtrcon_ready = 1'd0;
reg [2:0] litedramcore_twtrcon_count = 3'd0; reg [2:0] litedramcore_twtrcon_count = 3'd0;
wire litedramcore_read_available; wire litedramcore_read_available;
wire litedramcore_write_available; wire litedramcore_write_available;
@ -14764,11 +14764,11 @@ always @(posedge sys_clk) begin
litedramcore_bankmachine0_cmd_buffer_source_valid <= 1'd0; litedramcore_bankmachine0_cmd_buffer_source_valid <= 1'd0;
litedramcore_bankmachine0_row <= 15'd0; litedramcore_bankmachine0_row <= 15'd0;
litedramcore_bankmachine0_row_opened <= 1'd0; litedramcore_bankmachine0_row_opened <= 1'd0;
litedramcore_bankmachine0_twtpcon_ready <= 1'd1; litedramcore_bankmachine0_twtpcon_ready <= 1'd0;
litedramcore_bankmachine0_twtpcon_count <= 3'd0; litedramcore_bankmachine0_twtpcon_count <= 3'd0;
litedramcore_bankmachine0_trccon_ready <= 1'd1; litedramcore_bankmachine0_trccon_ready <= 1'd0;
litedramcore_bankmachine0_trccon_count <= 3'd0; litedramcore_bankmachine0_trccon_count <= 3'd0;
litedramcore_bankmachine0_trascon_ready <= 1'd1; litedramcore_bankmachine0_trascon_ready <= 1'd0;
litedramcore_bankmachine0_trascon_count <= 3'd0; litedramcore_bankmachine0_trascon_count <= 3'd0;
litedramcore_bankmachine1_cmd_buffer_lookahead_level <= 5'd0; litedramcore_bankmachine1_cmd_buffer_lookahead_level <= 5'd0;
litedramcore_bankmachine1_cmd_buffer_lookahead_produce <= 4'd0; litedramcore_bankmachine1_cmd_buffer_lookahead_produce <= 4'd0;
@ -14776,11 +14776,11 @@ always @(posedge sys_clk) begin
litedramcore_bankmachine1_cmd_buffer_source_valid <= 1'd0; litedramcore_bankmachine1_cmd_buffer_source_valid <= 1'd0;
litedramcore_bankmachine1_row <= 15'd0; litedramcore_bankmachine1_row <= 15'd0;
litedramcore_bankmachine1_row_opened <= 1'd0; litedramcore_bankmachine1_row_opened <= 1'd0;
litedramcore_bankmachine1_twtpcon_ready <= 1'd1; litedramcore_bankmachine1_twtpcon_ready <= 1'd0;
litedramcore_bankmachine1_twtpcon_count <= 3'd0; litedramcore_bankmachine1_twtpcon_count <= 3'd0;
litedramcore_bankmachine1_trccon_ready <= 1'd1; litedramcore_bankmachine1_trccon_ready <= 1'd0;
litedramcore_bankmachine1_trccon_count <= 3'd0; litedramcore_bankmachine1_trccon_count <= 3'd0;
litedramcore_bankmachine1_trascon_ready <= 1'd1; litedramcore_bankmachine1_trascon_ready <= 1'd0;
litedramcore_bankmachine1_trascon_count <= 3'd0; litedramcore_bankmachine1_trascon_count <= 3'd0;
litedramcore_bankmachine2_cmd_buffer_lookahead_level <= 5'd0; litedramcore_bankmachine2_cmd_buffer_lookahead_level <= 5'd0;
litedramcore_bankmachine2_cmd_buffer_lookahead_produce <= 4'd0; litedramcore_bankmachine2_cmd_buffer_lookahead_produce <= 4'd0;
@ -14788,11 +14788,11 @@ always @(posedge sys_clk) begin
litedramcore_bankmachine2_cmd_buffer_source_valid <= 1'd0; litedramcore_bankmachine2_cmd_buffer_source_valid <= 1'd0;
litedramcore_bankmachine2_row <= 15'd0; litedramcore_bankmachine2_row <= 15'd0;
litedramcore_bankmachine2_row_opened <= 1'd0; litedramcore_bankmachine2_row_opened <= 1'd0;
litedramcore_bankmachine2_twtpcon_ready <= 1'd1; litedramcore_bankmachine2_twtpcon_ready <= 1'd0;
litedramcore_bankmachine2_twtpcon_count <= 3'd0; litedramcore_bankmachine2_twtpcon_count <= 3'd0;
litedramcore_bankmachine2_trccon_ready <= 1'd1; litedramcore_bankmachine2_trccon_ready <= 1'd0;
litedramcore_bankmachine2_trccon_count <= 3'd0; litedramcore_bankmachine2_trccon_count <= 3'd0;
litedramcore_bankmachine2_trascon_ready <= 1'd1; litedramcore_bankmachine2_trascon_ready <= 1'd0;
litedramcore_bankmachine2_trascon_count <= 3'd0; litedramcore_bankmachine2_trascon_count <= 3'd0;
litedramcore_bankmachine3_cmd_buffer_lookahead_level <= 5'd0; litedramcore_bankmachine3_cmd_buffer_lookahead_level <= 5'd0;
litedramcore_bankmachine3_cmd_buffer_lookahead_produce <= 4'd0; litedramcore_bankmachine3_cmd_buffer_lookahead_produce <= 4'd0;
@ -14800,11 +14800,11 @@ always @(posedge sys_clk) begin
litedramcore_bankmachine3_cmd_buffer_source_valid <= 1'd0; litedramcore_bankmachine3_cmd_buffer_source_valid <= 1'd0;
litedramcore_bankmachine3_row <= 15'd0; litedramcore_bankmachine3_row <= 15'd0;
litedramcore_bankmachine3_row_opened <= 1'd0; litedramcore_bankmachine3_row_opened <= 1'd0;
litedramcore_bankmachine3_twtpcon_ready <= 1'd1; litedramcore_bankmachine3_twtpcon_ready <= 1'd0;
litedramcore_bankmachine3_twtpcon_count <= 3'd0; litedramcore_bankmachine3_twtpcon_count <= 3'd0;
litedramcore_bankmachine3_trccon_ready <= 1'd1; litedramcore_bankmachine3_trccon_ready <= 1'd0;
litedramcore_bankmachine3_trccon_count <= 3'd0; litedramcore_bankmachine3_trccon_count <= 3'd0;
litedramcore_bankmachine3_trascon_ready <= 1'd1; litedramcore_bankmachine3_trascon_ready <= 1'd0;
litedramcore_bankmachine3_trascon_count <= 3'd0; litedramcore_bankmachine3_trascon_count <= 3'd0;
litedramcore_bankmachine4_cmd_buffer_lookahead_level <= 5'd0; litedramcore_bankmachine4_cmd_buffer_lookahead_level <= 5'd0;
litedramcore_bankmachine4_cmd_buffer_lookahead_produce <= 4'd0; litedramcore_bankmachine4_cmd_buffer_lookahead_produce <= 4'd0;
@ -14812,11 +14812,11 @@ always @(posedge sys_clk) begin
litedramcore_bankmachine4_cmd_buffer_source_valid <= 1'd0; litedramcore_bankmachine4_cmd_buffer_source_valid <= 1'd0;
litedramcore_bankmachine4_row <= 15'd0; litedramcore_bankmachine4_row <= 15'd0;
litedramcore_bankmachine4_row_opened <= 1'd0; litedramcore_bankmachine4_row_opened <= 1'd0;
litedramcore_bankmachine4_twtpcon_ready <= 1'd1; litedramcore_bankmachine4_twtpcon_ready <= 1'd0;
litedramcore_bankmachine4_twtpcon_count <= 3'd0; litedramcore_bankmachine4_twtpcon_count <= 3'd0;
litedramcore_bankmachine4_trccon_ready <= 1'd1; litedramcore_bankmachine4_trccon_ready <= 1'd0;
litedramcore_bankmachine4_trccon_count <= 3'd0; litedramcore_bankmachine4_trccon_count <= 3'd0;
litedramcore_bankmachine4_trascon_ready <= 1'd1; litedramcore_bankmachine4_trascon_ready <= 1'd0;
litedramcore_bankmachine4_trascon_count <= 3'd0; litedramcore_bankmachine4_trascon_count <= 3'd0;
litedramcore_bankmachine5_cmd_buffer_lookahead_level <= 5'd0; litedramcore_bankmachine5_cmd_buffer_lookahead_level <= 5'd0;
litedramcore_bankmachine5_cmd_buffer_lookahead_produce <= 4'd0; litedramcore_bankmachine5_cmd_buffer_lookahead_produce <= 4'd0;
@ -14824,11 +14824,11 @@ always @(posedge sys_clk) begin
litedramcore_bankmachine5_cmd_buffer_source_valid <= 1'd0; litedramcore_bankmachine5_cmd_buffer_source_valid <= 1'd0;
litedramcore_bankmachine5_row <= 15'd0; litedramcore_bankmachine5_row <= 15'd0;
litedramcore_bankmachine5_row_opened <= 1'd0; litedramcore_bankmachine5_row_opened <= 1'd0;
litedramcore_bankmachine5_twtpcon_ready <= 1'd1; litedramcore_bankmachine5_twtpcon_ready <= 1'd0;
litedramcore_bankmachine5_twtpcon_count <= 3'd0; litedramcore_bankmachine5_twtpcon_count <= 3'd0;
litedramcore_bankmachine5_trccon_ready <= 1'd1; litedramcore_bankmachine5_trccon_ready <= 1'd0;
litedramcore_bankmachine5_trccon_count <= 3'd0; litedramcore_bankmachine5_trccon_count <= 3'd0;
litedramcore_bankmachine5_trascon_ready <= 1'd1; litedramcore_bankmachine5_trascon_ready <= 1'd0;
litedramcore_bankmachine5_trascon_count <= 3'd0; litedramcore_bankmachine5_trascon_count <= 3'd0;
litedramcore_bankmachine6_cmd_buffer_lookahead_level <= 5'd0; litedramcore_bankmachine6_cmd_buffer_lookahead_level <= 5'd0;
litedramcore_bankmachine6_cmd_buffer_lookahead_produce <= 4'd0; litedramcore_bankmachine6_cmd_buffer_lookahead_produce <= 4'd0;
@ -14836,11 +14836,11 @@ always @(posedge sys_clk) begin
litedramcore_bankmachine6_cmd_buffer_source_valid <= 1'd0; litedramcore_bankmachine6_cmd_buffer_source_valid <= 1'd0;
litedramcore_bankmachine6_row <= 15'd0; litedramcore_bankmachine6_row <= 15'd0;
litedramcore_bankmachine6_row_opened <= 1'd0; litedramcore_bankmachine6_row_opened <= 1'd0;
litedramcore_bankmachine6_twtpcon_ready <= 1'd1; litedramcore_bankmachine6_twtpcon_ready <= 1'd0;
litedramcore_bankmachine6_twtpcon_count <= 3'd0; litedramcore_bankmachine6_twtpcon_count <= 3'd0;
litedramcore_bankmachine6_trccon_ready <= 1'd1; litedramcore_bankmachine6_trccon_ready <= 1'd0;
litedramcore_bankmachine6_trccon_count <= 3'd0; litedramcore_bankmachine6_trccon_count <= 3'd0;
litedramcore_bankmachine6_trascon_ready <= 1'd1; litedramcore_bankmachine6_trascon_ready <= 1'd0;
litedramcore_bankmachine6_trascon_count <= 3'd0; litedramcore_bankmachine6_trascon_count <= 3'd0;
litedramcore_bankmachine7_cmd_buffer_lookahead_level <= 5'd0; litedramcore_bankmachine7_cmd_buffer_lookahead_level <= 5'd0;
litedramcore_bankmachine7_cmd_buffer_lookahead_produce <= 4'd0; litedramcore_bankmachine7_cmd_buffer_lookahead_produce <= 4'd0;
@ -14848,21 +14848,21 @@ always @(posedge sys_clk) begin
litedramcore_bankmachine7_cmd_buffer_source_valid <= 1'd0; litedramcore_bankmachine7_cmd_buffer_source_valid <= 1'd0;
litedramcore_bankmachine7_row <= 15'd0; litedramcore_bankmachine7_row <= 15'd0;
litedramcore_bankmachine7_row_opened <= 1'd0; litedramcore_bankmachine7_row_opened <= 1'd0;
litedramcore_bankmachine7_twtpcon_ready <= 1'd1; litedramcore_bankmachine7_twtpcon_ready <= 1'd0;
litedramcore_bankmachine7_twtpcon_count <= 3'd0; litedramcore_bankmachine7_twtpcon_count <= 3'd0;
litedramcore_bankmachine7_trccon_ready <= 1'd1; litedramcore_bankmachine7_trccon_ready <= 1'd0;
litedramcore_bankmachine7_trccon_count <= 3'd0; litedramcore_bankmachine7_trccon_count <= 3'd0;
litedramcore_bankmachine7_trascon_ready <= 1'd1; litedramcore_bankmachine7_trascon_ready <= 1'd0;
litedramcore_bankmachine7_trascon_count <= 3'd0; litedramcore_bankmachine7_trascon_count <= 3'd0;
litedramcore_choose_cmd_grant <= 3'd0; litedramcore_choose_cmd_grant <= 3'd0;
litedramcore_choose_req_grant <= 3'd0; litedramcore_choose_req_grant <= 3'd0;
litedramcore_trrdcon_ready <= 1'd1; litedramcore_trrdcon_ready <= 1'd0;
litedramcore_trrdcon_count <= 1'd0; litedramcore_trrdcon_count <= 1'd0;
litedramcore_tfawcon_ready <= 1'd1; litedramcore_tfawcon_ready <= 1'd1;
litedramcore_tfawcon_window <= 5'd0; litedramcore_tfawcon_window <= 5'd0;
litedramcore_tccdcon_ready <= 1'd1; litedramcore_tccdcon_ready <= 1'd0;
litedramcore_tccdcon_count <= 1'd0; litedramcore_tccdcon_count <= 1'd0;
litedramcore_twtrcon_ready <= 1'd1; litedramcore_twtrcon_ready <= 1'd0;
litedramcore_twtrcon_count <= 3'd0; litedramcore_twtrcon_count <= 3'd0;
litedramcore_time0 <= 5'd0; litedramcore_time0 <= 5'd0;
litedramcore_time1 <= 4'd0; litedramcore_time1 <= 4'd0;

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