cores
/
microwatt
mirror of https://github.com/antonblanchard/microwatt
3
1
Fork 1
Code Issues Projects Releases Wiki Activity

Merge pull request #178 from antonblanchard/intercon

Browse Source 
Interconnect timing improvements from Ben
pull/185/head
Anton Blanchard 5 years ago committed by GitHub
parent 4c1a73131b 12f36b4a35
commit 84ab28b3d2
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
30 changed files with 1074 additions and 628 deletions
Show Stats Download Patch File Download Diff File

4
common.vhdl
Unescape Escape View File

@ -399,10 +399,6 @@ package common is
write_cr_mask => (others => '0'), write_cr_mask => (others => '0'),
write_cr_data => (others => '0')); write_cr_data => (others => '0'));


type XicsToExecute1Type is record
irq : std_ulogic;
end record;

end common; end common;


package body common is package body common is

4
core.vhdl
Unescape Escape View File

@ -34,7 +34,7 @@ entity core is
dmi_wr : in std_ulogic; dmi_wr : in std_ulogic;
dmi_ack : out std_ulogic; dmi_ack : out std_ulogic;


xics_in : in XicsToExecute1Type; ext_irq : in std_ulogic;


terminated_out : out std_logic terminated_out : out std_logic
); );
@ -291,8 +291,8 @@ begin
flush_out => flush, flush_out => flush,
stall_out => ex1_stall_out, stall_out => ex1_stall_out,
e_in => decode2_to_execute1, e_in => decode2_to_execute1,
i_in => xics_in,
l_in => loadstore1_to_execute1, l_in => loadstore1_to_execute1,
ext_irq_in => ext_irq,
l_out => execute1_to_loadstore1, l_out => execute1_to_loadstore1,
f_out => execute1_to_fetch1, f_out => execute1_to_fetch1,
e_out => execute1_to_writeback, e_out => execute1_to_writeback,

9
core_tb.vhdl
Unescape Escape View File

@ -18,6 +18,8 @@ architecture behave of core_tb is
-- Dummy DRAM -- Dummy DRAM
signal wb_dram_in : wishbone_master_out; signal wb_dram_in : wishbone_master_out;
signal wb_dram_out : wishbone_slave_out; signal wb_dram_out : wishbone_slave_out;
signal wb_dram_ctrl_in : wb_io_master_out;
signal wb_dram_ctrl_out : wb_io_slave_out;
begin begin


soc0: entity work.soc soc0: entity work.soc
@ -35,6 +37,8 @@ begin
uart0_txd => open, uart0_txd => open,
wb_dram_in => wb_dram_in, wb_dram_in => wb_dram_in,
wb_dram_out => wb_dram_out, wb_dram_out => wb_dram_out,
wb_dram_ctrl_in => wb_dram_ctrl_in,
wb_dram_ctrl_out => wb_dram_ctrl_out,
alt_reset => '0' alt_reset => '0'
); );


@ -59,6 +63,9 @@ begin
-- Dummy DRAM -- Dummy DRAM
wb_dram_out.ack <= wb_dram_in.cyc and wb_dram_in.stb; wb_dram_out.ack <= wb_dram_in.cyc and wb_dram_in.stb;
wb_dram_out.dat <= x"FFFFFFFFFFFFFFFF"; wb_dram_out.dat <= x"FFFFFFFFFFFFFFFF";
wb_dram_out.stall <= wb_dram_in.cyc and not wb_dram_out.ack; wb_dram_out.stall <= '0';
wb_dram_ctrl_out.ack <= wb_dram_ctrl_in.cyc and wb_dram_ctrl_in.stb;
wb_dram_ctrl_out.dat <= x"FFFFFFFF";
wb_dram_ctrl_out.stall <= '0';


end; end;

4
execute1.vhdl
Unescape Escape View File

@ -25,7 +25,7 @@ entity execute1 is
e_in : in Decode2ToExecute1Type; e_in : in Decode2ToExecute1Type;
l_in : in Loadstore1ToExecute1Type; l_in : in Loadstore1ToExecute1Type;


i_in : in XicsToExecute1Type; ext_irq_in : std_ulogic;


-- asynchronous -- asynchronous
l_out : out Execute1ToLoadstore1Type; l_out : out Execute1ToLoadstore1Type;
@ -419,7 +419,7 @@ begin
ctrl_tmp.irq_nia <= std_logic_vector(to_unsigned(16#900#, 64)); ctrl_tmp.irq_nia <= std_logic_vector(to_unsigned(16#900#, 64));
report "IRQ valid: DEC"; report "IRQ valid: DEC";
irq_valid := '1'; irq_valid := '1';
elsif i_in.irq = '1' then elsif ext_irq_in = '1' then
ctrl_tmp.irq_nia <= std_logic_vector(to_unsigned(16#500#, 64)); ctrl_tmp.irq_nia <= std_logic_vector(to_unsigned(16#500#, 64));
report "IRQ valid: External"; report "IRQ valid: External";
irq_valid := '1'; irq_valid := '1';

26
fpga/top-arty.vhdl
Unescape Escape View File

@ -65,11 +65,15 @@ architecture behaviour of toplevel is
signal system_clk : std_ulogic; signal system_clk : std_ulogic;
signal system_clk_locked : std_ulogic; signal system_clk_locked : std_ulogic;


-- DRAM wishbone connection -- DRAM main data wishbone connection
signal wb_dram_in : wishbone_master_out; signal wb_dram_in : wishbone_master_out;
signal wb_dram_out : wishbone_slave_out; signal wb_dram_out : wishbone_slave_out;
signal wb_dram_ctrl : std_ulogic;
signal wb_dram_init : std_ulogic; -- DRAM control wishbone connection
signal wb_dram_ctrl_in : wb_io_master_out;
signal wb_dram_ctrl_out : wb_io_slave_out;
signal wb_dram_is_csr : std_ulogic;
signal wb_dram_is_init : std_ulogic;


-- Control/status -- Control/status
signal core_alt_reset : std_ulogic; signal core_alt_reset : std_ulogic;
@ -104,8 +108,10 @@ begin
uart0_rxd => uart_main_rx, uart0_rxd => uart_main_rx,
wb_dram_in => wb_dram_in, wb_dram_in => wb_dram_in,
wb_dram_out => wb_dram_out, wb_dram_out => wb_dram_out,
wb_dram_ctrl => wb_dram_ctrl, wb_dram_ctrl_in => wb_dram_ctrl_in,
wb_dram_init => wb_dram_init, wb_dram_ctrl_out => wb_dram_ctrl_out,
wb_dram_is_csr => wb_dram_is_csr,
wb_dram_is_init => wb_dram_is_init,
alt_reset => core_alt_reset alt_reset => core_alt_reset
); );


@ -195,8 +201,10 @@ begin


wb_in => wb_dram_in, wb_in => wb_dram_in,
wb_out => wb_dram_out, wb_out => wb_dram_out,
wb_is_ctrl => wb_dram_ctrl, wb_ctrl_in => wb_dram_ctrl_in,
wb_is_init => wb_dram_init, wb_ctrl_out => wb_dram_ctrl_out,
wb_ctrl_is_csr => wb_dram_is_csr,
wb_ctrl_is_init => wb_dram_is_init,


serial_tx => uart_pmod_tx, serial_tx => uart_pmod_tx,
serial_rx => uart_pmod_rx, serial_rx => uart_pmod_rx,

20
fpga/top-generic.vhdl
Unescape Escape View File

@ -33,9 +33,15 @@ architecture behaviour of toplevel is
signal system_clk : std_ulogic; signal system_clk : std_ulogic;
signal system_clk_locked : std_ulogic; signal system_clk_locked : std_ulogic;


-- Dummy DRAM -- DRAM main data wishbone connection
signal wb_dram_in : wishbone_master_out; signal wb_dram_in : wishbone_master_out;
signal wb_dram_out : wishbone_slave_out; signal wb_dram_out : wishbone_slave_out;

-- DRAM control wishbone connection
signal wb_dram_ctrl_in : wb_io_master_out;
signal wb_dram_ctrl_out : wb_io_slave_out;
signal wb_dram_is_csr : std_ulogic;
signal wb_dram_is_init : std_ulogic;


begin begin


@ -79,7 +85,12 @@ begin
rst => soc_rst, rst => soc_rst,
uart0_txd => uart0_txd, uart0_txd => uart0_txd,
uart0_rxd => uart0_rxd, uart0_rxd => uart0_rxd,
wb_dram_in => wb_dram_in,
wb_dram_out => wb_dram_out, wb_dram_out => wb_dram_out,
wb_dram_ctrl_in => wb_dram_ctrl_in,
wb_dram_ctrl_out => wb_dram_ctrl_out,
wb_dram_is_csr => wb_dram_is_csr,
wb_dram_is_init => wb_dram_is_init,
alt_reset => '0' alt_reset => '0'
); );


@ -87,5 +98,8 @@ begin
wb_dram_out.ack <= wb_dram_in.cyc and wb_dram_in.stb; wb_dram_out.ack <= wb_dram_in.cyc and wb_dram_in.stb;
wb_dram_out.dat <= x"FFFFFFFFFFFFFFFF"; wb_dram_out.dat <= x"FFFFFFFFFFFFFFFF";
wb_dram_out.stall <= wb_dram_in.cyc and not wb_dram_out.ack; wb_dram_out.stall <= wb_dram_in.cyc and not wb_dram_out.ack;
wb_dram_ctrl_out.ack <= wb_dram_in.cyc and wb_dram_in.stb;
wb_dram_ctrl_out.dat <= x"FFFFFFFF";
wb_dram_ctrl_out.stall <= wb_dram_in.cyc and not wb_dram_out.ack;


end architecture behaviour; end architecture behaviour;

26
fpga/top-nexys-video.vhdl
Unescape Escape View File

@ -57,11 +57,15 @@ architecture behaviour of toplevel is
signal system_clk : std_ulogic; signal system_clk : std_ulogic;
signal system_clk_locked : std_ulogic; signal system_clk_locked : std_ulogic;


-- DRAM wishbone connection -- DRAM main data wishbone connection
signal wb_dram_in : wishbone_master_out; signal wb_dram_in : wishbone_master_out;
signal wb_dram_out : wishbone_slave_out; signal wb_dram_out : wishbone_slave_out;
signal wb_dram_ctrl : std_ulogic;
signal wb_dram_init : std_ulogic; -- DRAM control wishbone connection
signal wb_dram_ctrl_in : wb_io_master_out;
signal wb_dram_ctrl_out : wb_io_slave_out;
signal wb_dram_is_csr : std_ulogic;
signal wb_dram_is_init : std_ulogic;


-- Control/status -- Control/status
signal core_alt_reset : std_ulogic; signal core_alt_reset : std_ulogic;
@ -87,8 +91,10 @@ begin
uart0_rxd => uart_main_rx, uart0_rxd => uart_main_rx,
wb_dram_in => wb_dram_in, wb_dram_in => wb_dram_in,
wb_dram_out => wb_dram_out, wb_dram_out => wb_dram_out,
wb_dram_ctrl => wb_dram_ctrl, wb_dram_ctrl_in => wb_dram_ctrl_in,
wb_dram_init => wb_dram_init, wb_dram_ctrl_out => wb_dram_ctrl_out,
wb_dram_is_csr => wb_dram_is_csr,
wb_dram_is_init => wb_dram_is_init,
alt_reset => core_alt_reset alt_reset => core_alt_reset
); );


@ -176,8 +182,10 @@ begin


wb_in => wb_dram_in, wb_in => wb_dram_in,
wb_out => wb_dram_out, wb_out => wb_dram_out,
wb_is_ctrl => wb_dram_ctrl, wb_ctrl_in => wb_dram_ctrl_in,
wb_is_init => wb_dram_init, wb_ctrl_out => wb_dram_ctrl_out,
wb_ctrl_is_csr => wb_dram_is_csr,
wb_ctrl_is_init => wb_dram_is_init,


serial_tx => open, serial_tx => open,
serial_rx => '0', serial_rx => '0',

25
include/microwatt_soc.h
Unescape Escape View File

@ -2,9 +2,22 @@
#define __MICROWATT_SOC_H #define __MICROWATT_SOC_H


/* /*
* Definitions for the syscon registers * Microwatt SoC memory map
*/

#define MEMORY_BASE 0x00000000 /* "Main" memory alias, either BRAM or DRAM */
#define DRAM_BASE 0x40000000 /* DRAM if present */
#define BRAM_BASE 0x80000000 /* Internal BRAM */

#define SYSCON_BASE 0xc0000000 /* System control regs */
#define UART_BASE 0xc0002000 /* UART */
#define XICS_BASE 0xc0004000 /* Interrupt controller */
#define DRAM_CTRL_BASE 0xc0100000 /* LiteDRAM control registers */
#define DRAM_INIT_BASE 0xf0000000 /* Internal DRAM init firmware */

/*
* Register definitions for the syscon registers
*/ */
#define SYSCON_BASE 0xc0000000


#define SYS_REG_SIGNATURE 0x00 #define SYS_REG_SIGNATURE 0x00
#define SYS_REG_INFO 0x08 #define SYS_REG_INFO 0x08
@ -18,9 +31,9 @@
#define SYS_REG_CTRL_CORE_RESET (1ull << 1) #define SYS_REG_CTRL_CORE_RESET (1ull << 1)
#define SYS_REG_CTRL_SOC_RESET (1ull << 2) #define SYS_REG_CTRL_SOC_RESET (1ull << 2)


/* Definition for the "Potato" UART */ /*
#define UART_BASE 0xc0002000 * Register definitions for the potato UART

*/
#define POTATO_CONSOLE_TX 0x00 #define POTATO_CONSOLE_TX 0x00
#define POTATO_CONSOLE_RX 0x08 #define POTATO_CONSOLE_RX 0x08
#define POTATO_CONSOLE_STATUS 0x10 #define POTATO_CONSOLE_STATUS 0x10
@ -31,7 +44,5 @@
#define POTATO_CONSOLE_CLOCK_DIV 0x18 #define POTATO_CONSOLE_CLOCK_DIV 0x18
#define POTATO_CONSOLE_IRQ_EN 0x20 #define POTATO_CONSOLE_IRQ_EN 0x20


/* Definition for the LiteDRAM control registers */
#define DRAM_CTRL_BASE 0xc0100000


#endif /* __MICROWATT_SOC_H */ #endif /* __MICROWATT_SOC_H */

2
litedram/extras/fusesoc-add-files.py
Unescape Escape View File

@ -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
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;

4
litedram/gen-src/generate.py
Unescape Escape View File

@ -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
Unescape Escape View File

@ -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;

6
litedram/gen-src/sdram_init/Makefile
Unescape Escape View File

@ -26,7 +26,7 @@ CPPFLAGS += -I$(SRC_DIR)/libc/include -I$(LXSRC_DIR) -I$(LXINC_DIR) -I$(GENINC_D
CPPFLAGS += -isystem $(shell $(CC) -print-file-name=include) CPPFLAGS += -isystem $(shell $(CC) -print-file-name=include)
CFLAGS = -Os -g -Wall -std=c99 -m64 -mabi=elfv2 -msoft-float -mno-string -mno-multiple -mno-vsx -mno-altivec -mlittle-endian -fno-stack-protector -mstrict-align -ffreestanding -fdata-sections -ffunction-sections -fno-delete-null-pointer-checks CFLAGS = -Os -g -Wall -std=c99 -m64 -mabi=elfv2 -msoft-float -mno-string -mno-multiple -mno-vsx -mno-altivec -mlittle-endian -fno-stack-protector -mstrict-align -ffreestanding -fdata-sections -ffunction-sections -fno-delete-null-pointer-checks
ASFLAGS = $(CPPFLAGS) $(CFLAGS) ASFLAGS = $(CPPFLAGS) $(CFLAGS)
LDFLAGS = -static -nostdlib -Ttext-segment=0xffff0000 -T $(SRC_DIR)/$(PROGRAM).lds --gc-sections LDFLAGS = -static -nostdlib -T $(OBJ)/$(PROGRAM).lds --gc-sections


#### Pretty print #### Pretty print


@ -58,13 +58,15 @@ $(OBJ)/%.o : $(SRC_DIR)/%.S
$(call Q,AS, $(CC) $(ASFLAGS) -c $< -o $@, $@) $(call Q,AS, $(CC) $(ASFLAGS) -c $< -o $@, $@)
$(OBJ)/%.o : $(SRC_DIR)/libc/src/%.c $(OBJ)/%.o : $(SRC_DIR)/libc/src/%.c
$(call Q,CC, $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@, $@) $(call Q,CC, $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@, $@)
$(OBJ)/%.lds : $(SRC_DIR)/%.lds.S
$(call Q,CC, $(CC) $(CPPFLAGS) -P -E $< -o $@, $@)


LIBC_SRC := $(wildcard $(SRC_DIR)/libc/src/*.c) LIBC_SRC := $(wildcard $(SRC_DIR)/libc/src/*.c)
LIBC_OBJ := $(patsubst $(SRC_DIR)/libc/src/%.c, $(OBJ)/%.o,$(LIBC_SRC)) LIBC_OBJ := $(patsubst $(SRC_DIR)/libc/src/%.c, $(OBJ)/%.o,$(LIBC_SRC))
$(OBJ)/libc.o: $(LIBC_OBJ) $(OBJ)/libc.o: $(LIBC_OBJ)
$(call Q,LD, $(LD) -r -o $@ $^, $@) $(call Q,LD, $(LD) -r -o $@ $^, $@)


$(OBJ)/$(PROGRAM).elf: $(OBJECTS) $(OBJ)/libc.o $(OBJ)/$(PROGRAM).elf: $(OBJECTS) $(OBJ)/libc.o $(OBJ)/$(PROGRAM).lds
$(call Q,LD, $(LD) $(LDFLAGS) -o $@ $^, $@) $(call Q,LD, $(LD) $(LDFLAGS) -o $@ $^, $@)


$(OBJ)/$(PROGRAM).bin: $(OBJ)/$(PROGRAM).elf $(OBJ)/$(PROGRAM).bin: $(OBJ)/$(PROGRAM).elf

2
litedram/gen-src/sdram_init/head.S
Unescape Escape View File

@ -14,7 +14,7 @@
* limitations under the License. * limitations under the License.
*/ */


#define STACK_TOP 0xffff4000 #define STACK_TOP 0xf0004000


#define FIXUP_ENDIAN \ #define FIXUP_ENDIAN \
tdi 0,0,0x48; /* Reverse endian of b . + 8 */ \ tdi 0,0,0x48; /* Reverse endian of b . + 8 */ \

9
litedram/gen-src/sdram_init/sdram_init.lds → litedram/gen-src/sdram_init/sdram_init.lds.S
Unescape Escape View File

@ -1,11 +1,14 @@
#include "microwatt_soc.h"

SECTIONS SECTIONS
{ {
. = 0xffff0000; . = DRAM_INIT_BASE;
start = .; start = .;
.head : { .head : {
KEEP(*(.head)) KEEP(*(.head))
} }
. = 0xffff1000; . = DRAM_INIT_BASE | 0x1000;

.text : { *(.text*) *(.sfpr) *(.rodata*) } .text : { *(.text*) *(.sfpr) *(.rodata*) }
.data : { *(.data*) } .data : { *(.data*) }
.bss : { *(.bss*) } .bss : { *(.bss*) }

163
litedram/gen-src/wrapper-mw-init.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 (
@ -15,18 +14,20 @@ entity litedram_wrapper is
port( port(
-- LiteDRAM generates the system clock and reset -- LiteDRAM generates the system clock and reset
-- from the input clkin -- from the input clkin
clk_in : in std_ulogic; clk_in : in std_ulogic;
rst : in std_ulogic; rst : in std_ulogic;
system_clk : out std_ulogic; system_clk : out std_ulogic;
system_reset : out std_ulogic; system_reset : out std_ulogic;
core_alt_reset : out std_ulogic; core_alt_reset : out std_ulogic;
pll_locked : out std_ulogic; pll_locked : out std_ulogic;


-- Wishbone ports: -- Wishbone ports:
wb_in : in wishbone_master_out; wb_in : in wishbone_master_out;
wb_out : out wishbone_slave_out; wb_out : out wishbone_slave_out;
wb_is_ctrl : in std_ulogic; wb_ctrl_in : in wb_io_master_out;
wb_is_init : in std_ulogic; wb_ctrl_out : out wb_io_slave_out;
wb_ctrl_is_csr : in std_ulogic;
wb_ctrl_is_init : in std_ulogic;


-- Init core serial debug -- Init core serial debug
serial_tx : out std_ulogic; serial_tx : out std_ulogic;
@ -128,113 +129,85 @@ architecture behaviour of litedram_wrapper is
signal wb_ctrl_ack : std_ulogic; signal wb_ctrl_ack : std_ulogic;
signal wb_ctrl_we : std_ulogic; signal wb_ctrl_we : std_ulogic;


signal wb_init_in : wishbone_master_out; signal wb_init_in : wb_io_master_out;
signal wb_init_out : wishbone_slave_out; signal wb_init_out : wb_io_slave_out;


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

type ram_t is array(0 to (INIT_RAM_SIZE / 8) - 1) of std_logic_vector(63 downto 0);


impure function init_load_ram(name : string) return ram_t is -- alternate core reset address set when DRAM is not initialized.
file ram_file : text open read_mode is name; core_alt_reset <= not init_done;
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) := temp_word;
end loop;
return temp_ram;
end function;


signal init_ram : ram_t := init_load_ram(INIT_RAM_FILE); -- Init code BRAM memory slave
init_ram_0: entity work.dram_init_mem
port map(
clk => system_clk,
wb_in => wb_init_in,
wb_out => wb_init_out
);


attribute ram_style : string; --
attribute ram_style of init_ram: signal is "block"; -- Control bus wishbone: This muxes the wishbone to the CSRs
-- and an internal small one to the init BRAM
--


begin -- Init DRAM wishbone IN signals
wb_init_in.adr <= wb_ctrl_in.adr;
wb_init_in.dat <= wb_ctrl_in.dat;
wb_init_in.sel <= wb_ctrl_in.sel;
wb_init_in.we <= wb_ctrl_in.we;
wb_init_in.stb <= wb_ctrl_in.stb;
wb_init_in.cyc <= wb_ctrl_in.cyc and wb_ctrl_is_init;


-- BRAM Memory slave -- DRAM CSR IN signals
init_ram_0: process(system_clk) wb_ctrl_adr <= x"0000" & wb_ctrl_in.adr(15 downto 2);
variable adr : integer; wb_ctrl_dat_w <= wb_ctrl_in.dat;
begin wb_ctrl_sel <= wb_ctrl_in.sel;
if rising_edge(system_clk) then wb_ctrl_we <= wb_ctrl_in.we;
wb_init_out.ack <= '0'; wb_ctrl_cyc <= wb_ctrl_in.cyc and wb_ctrl_is_csr;
if (wb_init_in.cyc and wb_init_in.stb) = '1' then wb_ctrl_stb <= wb_ctrl_in.stb and wb_ctrl_is_csr;
adr := to_integer((unsigned(wb_init_in.adr(INIT_RAM_ABITS-1 downto 3))));
if wb_init_in.we = '0' then
wb_init_out.dat <= init_ram(adr);
else
for i in 0 to 7 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 <= not wb_init_out.ack;
end if;
end if;
end process;


wb_init_in.adr <= wb_in.adr; -- Ctrl bus wishbone OUT signals
wb_init_in.dat <= wb_in.dat; wb_ctrl_out.ack <= wb_ctrl_ack when wb_ctrl_is_csr = '1'
wb_init_in.sel <= wb_in.sel; else wb_init_out.ack;
wb_init_in.we <= wb_in.we; wb_ctrl_out.dat <= wb_ctrl_dat_r when wb_ctrl_is_csr = '1'
wb_init_in.stb <= wb_in.stb; else wb_init_out.dat;
wb_init_in.cyc <= wb_in.cyc and wb_is_init; wb_ctrl_out.stall <= wb_init_out.stall when wb_ctrl_is_init else
'0' when wb_ctrl_in.cyc = '0' else not wb_ctrl_ack;


-- Address bit 3 selects the top or bottom half of the data --
-- Data bus wishbone to LiteDRAM native port
--
-- Address bit 3 selects the top or bottom half of the data
-- bus (64-bit wishbone vs. 128-bit DRAM interface) -- bus (64-bit wishbone vs. 128-bit DRAM interface)
-- --
-- XXX TODO: Figure out how to pipeline this
--
ad3 <= wb_in.adr(3); ad3 <= wb_in.adr(3);


-- DRAM data interface signals -- Wishbone port IN signals
user_port0_cmd_valid <= (wb_in.cyc and wb_in.stb and not wb_is_ctrl and not wb_is_init) user_port0_cmd_valid <= wb_in.cyc and wb_in.stb when state = CMD else '0';
when state = CMD else '0'; user_port0_cmd_we <= wb_in.we when state = CMD else '0';
user_port0_cmd_we <= wb_in.we when state = CMD else '0';
user_port0_wdata_valid <= '1' when state = MWRITE else '0'; user_port0_wdata_valid <= '1' when state = MWRITE else '0';
user_port0_rdata_ready <= '1' when state = MREAD else '0'; user_port0_rdata_ready <= '1' when state = MREAD else '0';
user_port0_cmd_addr <= wb_in.adr(DRAM_ABITS+3 downto 4); user_port0_cmd_addr <= wb_in.adr(DRAM_ABITS+3 downto 4);
user_port0_wdata_data <= wb_in.dat & wb_in.dat; user_port0_wdata_data <= wb_in.dat & wb_in.dat;
user_port0_wdata_we <= wb_in.sel & "00000000" when ad3 = '1' else user_port0_wdata_we <= wb_in.sel & "00000000" when ad3 = '1' else
"00000000" & wb_in.sel; "00000000" & wb_in.sel;


-- DRAM ctrl interface signals -- Wishbone OUT signals
wb_ctrl_adr <= x"0000" & wb_in.adr(15 downto 2); wb_out.ack <= user_port0_wdata_ready when state = MWRITE else
wb_ctrl_dat_w <= wb_in.dat(31 downto 0);
wb_ctrl_sel <= wb_in.sel(3 downto 0);
wb_ctrl_cyc <= wb_in.cyc and wb_is_ctrl;
wb_ctrl_stb <= wb_in.stb and wb_is_ctrl;
wb_ctrl_we <= wb_in.we;

-- Wishbone out signals
wb_out.ack <= wb_ctrl_ack when wb_is_ctrl ='1' else
wb_init_out.ack when wb_is_init = '1' else
user_port0_wdata_ready when state = MWRITE else
user_port0_rdata_valid when state = MREAD else '0'; user_port0_rdata_valid when state = MREAD else '0';


wb_out.dat <= (x"00000000" & wb_ctrl_dat_r) when wb_is_ctrl = '1' else wb_out.dat <= user_port0_rdata_data(127 downto 64) when ad3 = '1' else
wb_init_out.dat when wb_is_init = '1' else
user_port0_rdata_data(127 downto 64) when ad3 = '1' else
user_port0_rdata_data(63 downto 0); user_port0_rdata_data(63 downto 0);

-- We don't do pipelining yet. -- We don't do pipelining yet.
wb_out.stall <= '0' when wb_in.cyc = '0' else not wb_out.ack; wb_out.stall <= '0' when wb_in.cyc = '0' else not wb_out.ack;


-- Reset ignored, the reset controller use the pll lock signal, -- DRAM user port State machine
-- and alternate core reset address set when DRAM is not initialized.
--
core_alt_reset <= not init_done;

-- State machine
sm: process(system_clk) sm: process(system_clk)
begin begin
@ -255,7 +228,7 @@ begin
if user_port0_rdata_valid = '1' then if user_port0_rdata_valid = '1' then
state <= CMD; state <= CMD;
end if; end if;
end case; end case;
end if; end if;
end if; end if;
end process; end process;

73
litedram/gen-src/wrapper-self-init.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 (
@ -15,18 +14,20 @@ entity litedram_wrapper is
port( port(
-- LiteDRAM generates the system clock and reset -- LiteDRAM generates the system clock and reset
-- from the input clkin -- from the input clkin
clk_in : in std_ulogic; clk_in : in std_ulogic;
rst : in std_ulogic; rst : in std_ulogic;
system_clk : out std_ulogic; system_clk : out std_ulogic;
system_reset : out std_ulogic; system_reset : out std_ulogic;
core_alt_reset : out std_ulogic; core_alt_reset : out std_ulogic;
pll_locked : out std_ulogic; pll_locked : out std_ulogic;


-- Wishbone ports: -- Wishbone ports:
wb_in : in wishbone_master_out; wb_in : in wishbone_master_out;
wb_out : out wishbone_slave_out; wb_out : out wishbone_slave_out;
wb_is_ctrl : in std_ulogic; wb_ctrl_in : in wb_io_master_out;
wb_is_init : in std_ulogic; wb_ctrl_out : out wb_io_slave_out;
wb_ctrl_is_csr : in std_ulogic;
wb_ctrl_is_init : in std_ulogic;


-- Init core serial debug -- Init core serial debug
serial_tx : out std_ulogic; serial_tx : out std_ulogic;
@ -52,7 +53,6 @@ entity litedram_wrapper is
ddram_cke : out std_ulogic; ddram_cke : out std_ulogic;
ddram_odt : out std_ulogic; ddram_odt : out std_ulogic;
ddram_reset_n : out std_ulogic ddram_reset_n : out std_ulogic
);
end entity litedram_wrapper; end entity litedram_wrapper;


architecture behaviour of litedram_wrapper is architecture behaviour of litedram_wrapper is
@ -117,36 +117,47 @@ architecture behaviour of litedram_wrapper is


begin begin


-- Reset, lift it when init done, no alt core reset
system_reset <= dram_user_reset or not init_done;
core_alt_reset <= '0';

-- Control bus is unused
wb_ctrl_out.ack <= (wb_is_ctrl = '1' or wb_is_init = '1') and wb_ctrl_in.cyc;
else wb_init_out.ack;
wb_ctrl_out.dat <= (others => '0');
wb_ctrl_out.stall <= '0';

--
-- Data bus wishbone to LiteDRAM native port
--
-- Address bit 3 selects the top or bottom half of the data -- Address bit 3 selects the top or bottom half of the data
-- bus (64-bit wishbone vs. 128-bit DRAM interface) -- bus (64-bit wishbone vs. 128-bit DRAM interface)
-- --
-- XXX TODO: Figure out how to pipeline this
--
ad3 <= wb_in.adr(3); ad3 <= wb_in.adr(3);


-- DRAM interface signals -- Wishbone port IN signals
user_port0_cmd_valid <= (wb_in.cyc and wb_in.stb and not wb_is_ctrl and not wb_is_init) user_port0_cmd_valid <= wb_in.cyc and wb_in.stb when state = CMD else '0';
when state = CMD else '0'; user_port0_cmd_we <= wb_in.we when state = CMD else '0';
user_port0_cmd_we <= wb_in.we when state = CMD else '0';
user_port0_wdata_valid <= '1' when state = MWRITE else '0'; user_port0_wdata_valid <= '1' when state = MWRITE else '0';
user_port0_rdata_ready <= '1' when state = MREAD else '0'; user_port0_rdata_ready <= '1' when state = MREAD else '0';
user_port0_cmd_addr <= wb_in.adr(DRAM_ABITS+3 downto 4); user_port0_cmd_addr <= wb_in.adr(DRAM_ABITS+3 downto 4);
user_port0_wdata_data <= wb_in.dat & wb_in.dat; user_port0_wdata_data <= wb_in.dat & wb_in.dat;
user_port0_wdata_we <= wb_in.sel & "00000000" when ad3 = '1' else user_port0_wdata_we <= wb_in.sel & "00000000" when ad3 = '1' else
"00000000" & wb_in.sel; "00000000" & wb_in.sel;


-- Wishbone out signals. CSR and init memory do nothing, just ack -- Wishbone OUT signals
wb_out.ack <= '1' when (wb_is_ctrl = '1' or wb_is_init = '1') else wb_out.ack <= user_port0_wdata_ready when state = MWRITE else
user_port0_wdata_ready when state = MWRITE else
user_port0_rdata_valid when state = MREAD else '0'; user_port0_rdata_valid when state = MREAD else '0';
wb_out.dat <= (others => '0') when (wb_is_ctrl = '1' or wb_is_init = '1') else
user_port0_rdata_data(127 downto 64) when ad3 = '1' else wb_out.dat <= user_port0_rdata_data(127 downto 64) when ad3 = '1' else
user_port0_rdata_data(63 downto 0); user_port0_rdata_data(63 downto 0);
wb_out.stall <= '0' when wb_in.cyc = '0' else not wb_out.ack;


-- Reset, lift it when init done, no alt core reset -- We don't do pipelining yet.
system_reset <= dram_user_reset or not init_done; wb_out.stall <= '0' when wb_in.cyc = '0' else not wb_out.ack;
core_alt_reset <= '0';


-- State machine -- DRAM user port State machine
sm: process(system_clk) sm: process(system_clk)
begin begin

72
litedram/generated/arty/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;

163
litedram/generated/arty/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 (
@ -15,18 +14,20 @@ entity litedram_wrapper is
port( port(
-- LiteDRAM generates the system clock and reset -- LiteDRAM generates the system clock and reset
-- from the input clkin -- from the input clkin
clk_in : in std_ulogic; clk_in : in std_ulogic;
rst : in std_ulogic; rst : in std_ulogic;
system_clk : out std_ulogic; system_clk : out std_ulogic;
system_reset : out std_ulogic; system_reset : out std_ulogic;
core_alt_reset : out std_ulogic; core_alt_reset : out std_ulogic;
pll_locked : out std_ulogic; pll_locked : out std_ulogic;


-- Wishbone ports: -- Wishbone ports:
wb_in : in wishbone_master_out; wb_in : in wishbone_master_out;
wb_out : out wishbone_slave_out; wb_out : out wishbone_slave_out;
wb_is_ctrl : in std_ulogic; wb_ctrl_in : in wb_io_master_out;
wb_is_init : in std_ulogic; wb_ctrl_out : out wb_io_slave_out;
wb_ctrl_is_csr : in std_ulogic;
wb_ctrl_is_init : in std_ulogic;


-- Init core serial debug -- Init core serial debug
serial_tx : out std_ulogic; serial_tx : out std_ulogic;
@ -128,113 +129,85 @@ architecture behaviour of litedram_wrapper is
signal wb_ctrl_ack : std_ulogic; signal wb_ctrl_ack : std_ulogic;
signal wb_ctrl_we : std_ulogic; signal wb_ctrl_we : std_ulogic;


signal wb_init_in : wishbone_master_out; signal wb_init_in : wb_io_master_out;
signal wb_init_out : wishbone_slave_out; signal wb_init_out : wb_io_slave_out;


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

type ram_t is array(0 to (INIT_RAM_SIZE / 8) - 1) of std_logic_vector(63 downto 0);


impure function init_load_ram(name : string) return ram_t is -- alternate core reset address set when DRAM is not initialized.
file ram_file : text open read_mode is name; core_alt_reset <= not init_done;
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) := temp_word;
end loop;
return temp_ram;
end function;


signal init_ram : ram_t := init_load_ram(INIT_RAM_FILE); -- Init code BRAM memory slave
init_ram_0: entity work.dram_init_mem
port map(
clk => system_clk,
wb_in => wb_init_in,
wb_out => wb_init_out
);


attribute ram_style : string; --
attribute ram_style of init_ram: signal is "block"; -- Control bus wishbone: This muxes the wishbone to the CSRs
-- and an internal small one to the init BRAM
--


begin -- Init DRAM wishbone IN signals
wb_init_in.adr <= wb_ctrl_in.adr;
wb_init_in.dat <= wb_ctrl_in.dat;
wb_init_in.sel <= wb_ctrl_in.sel;
wb_init_in.we <= wb_ctrl_in.we;
wb_init_in.stb <= wb_ctrl_in.stb;
wb_init_in.cyc <= wb_ctrl_in.cyc and wb_ctrl_is_init;


-- BRAM Memory slave -- DRAM CSR IN signals
init_ram_0: process(system_clk) wb_ctrl_adr <= x"0000" & wb_ctrl_in.adr(15 downto 2);
variable adr : integer; wb_ctrl_dat_w <= wb_ctrl_in.dat;
begin wb_ctrl_sel <= wb_ctrl_in.sel;
if rising_edge(system_clk) then wb_ctrl_we <= wb_ctrl_in.we;
wb_init_out.ack <= '0'; wb_ctrl_cyc <= wb_ctrl_in.cyc and wb_ctrl_is_csr;
if (wb_init_in.cyc and wb_init_in.stb) = '1' then wb_ctrl_stb <= wb_ctrl_in.stb and wb_ctrl_is_csr;
adr := to_integer((unsigned(wb_init_in.adr(INIT_RAM_ABITS-1 downto 3))));
if wb_init_in.we = '0' then
wb_init_out.dat <= init_ram(adr);
else
for i in 0 to 7 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 <= not wb_init_out.ack;
end if;
end if;
end process;


wb_init_in.adr <= wb_in.adr; -- Ctrl bus wishbone OUT signals
wb_init_in.dat <= wb_in.dat; wb_ctrl_out.ack <= wb_ctrl_ack when wb_ctrl_is_csr = '1'
wb_init_in.sel <= wb_in.sel; else wb_init_out.ack;
wb_init_in.we <= wb_in.we; wb_ctrl_out.dat <= wb_ctrl_dat_r when wb_ctrl_is_csr = '1'
wb_init_in.stb <= wb_in.stb; else wb_init_out.dat;
wb_init_in.cyc <= wb_in.cyc and wb_is_init; wb_ctrl_out.stall <= wb_init_out.stall when wb_ctrl_is_init else
'0' when wb_ctrl_in.cyc = '0' else not wb_ctrl_ack;


-- Address bit 3 selects the top or bottom half of the data --
-- Data bus wishbone to LiteDRAM native port
--
-- Address bit 3 selects the top or bottom half of the data
-- bus (64-bit wishbone vs. 128-bit DRAM interface) -- bus (64-bit wishbone vs. 128-bit DRAM interface)
-- --
-- XXX TODO: Figure out how to pipeline this
--
ad3 <= wb_in.adr(3); ad3 <= wb_in.adr(3);


-- DRAM data interface signals -- Wishbone port IN signals
user_port0_cmd_valid <= (wb_in.cyc and wb_in.stb and not wb_is_ctrl and not wb_is_init) user_port0_cmd_valid <= wb_in.cyc and wb_in.stb when state = CMD else '0';
when state = CMD else '0'; user_port0_cmd_we <= wb_in.we when state = CMD else '0';
user_port0_cmd_we <= wb_in.we when state = CMD else '0';
user_port0_wdata_valid <= '1' when state = MWRITE else '0'; user_port0_wdata_valid <= '1' when state = MWRITE else '0';
user_port0_rdata_ready <= '1' when state = MREAD else '0'; user_port0_rdata_ready <= '1' when state = MREAD else '0';
user_port0_cmd_addr <= wb_in.adr(DRAM_ABITS+3 downto 4); user_port0_cmd_addr <= wb_in.adr(DRAM_ABITS+3 downto 4);
user_port0_wdata_data <= wb_in.dat & wb_in.dat; user_port0_wdata_data <= wb_in.dat & wb_in.dat;
user_port0_wdata_we <= wb_in.sel & "00000000" when ad3 = '1' else user_port0_wdata_we <= wb_in.sel & "00000000" when ad3 = '1' else
"00000000" & wb_in.sel; "00000000" & wb_in.sel;


-- DRAM ctrl interface signals -- Wishbone OUT signals
wb_ctrl_adr <= x"0000" & wb_in.adr(15 downto 2); wb_out.ack <= user_port0_wdata_ready when state = MWRITE else
wb_ctrl_dat_w <= wb_in.dat(31 downto 0);
wb_ctrl_sel <= wb_in.sel(3 downto 0);
wb_ctrl_cyc <= wb_in.cyc and wb_is_ctrl;
wb_ctrl_stb <= wb_in.stb and wb_is_ctrl;
wb_ctrl_we <= wb_in.we;

-- Wishbone out signals
wb_out.ack <= wb_ctrl_ack when wb_is_ctrl ='1' else
wb_init_out.ack when wb_is_init = '1' else
user_port0_wdata_ready when state = MWRITE else
user_port0_rdata_valid when state = MREAD else '0'; user_port0_rdata_valid when state = MREAD else '0';


wb_out.dat <= (x"00000000" & wb_ctrl_dat_r) when wb_is_ctrl = '1' else wb_out.dat <= user_port0_rdata_data(127 downto 64) when ad3 = '1' else
wb_init_out.dat when wb_is_init = '1' else
user_port0_rdata_data(127 downto 64) when ad3 = '1' else
user_port0_rdata_data(63 downto 0); user_port0_rdata_data(63 downto 0);

-- We don't do pipelining yet. -- We don't do pipelining yet.
wb_out.stall <= '0' when wb_in.cyc = '0' else not wb_out.ack; wb_out.stall <= '0' when wb_in.cyc = '0' else not wb_out.ack;


-- Reset ignored, the reset controller use the pll lock signal, -- DRAM user port State machine
-- and alternate core reset address set when DRAM is not initialized.
--
core_alt_reset <= not init_done;

-- State machine
sm: process(system_clk) sm: process(system_clk)
begin begin
@ -255,7 +228,7 @@ begin
if user_port0_rdata_valid = '1' then if user_port0_rdata_valid = '1' then
state <= CMD; state <= CMD;
end if; end if;
end case; end case;
end if; end if;
end if; end if;
end process; end process;

4
litedram/generated/arty/litedram_core.init
Unescape Escape View File

@ -4,10 +4,10 @@ a602487d05009f42
a64b5a7d14004a39 a64b5a7d14004a39
2402004ca64b7b7d 2402004ca64b7b7d
602100003c200000 602100003c200000
6421ffff782107c6 6421f000782107c6
3d80000060213f00 3d80000060213f00
798c07c6618c0000 798c07c6618c0000
618c108c658cffff 618c108c658cf000
4e8004217d8903a6 4e8004217d8903a6
0000000048000002 0000000048000002
0000000000000000 0000000000000000

110
litedram/generated/arty/litedram_core.v
Unescape Escape View File

@ -1,5 +1,5 @@
//-------------------------------------------------------------------------------- //--------------------------------------------------------------------------------
// Auto-generated by Migen (0d16e03) & LiteX (3391398a) on 2020-05-15 13:30:46 // 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;

163
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 (
@ -15,18 +14,20 @@ entity litedram_wrapper is
port( port(
-- LiteDRAM generates the system clock and reset -- LiteDRAM generates the system clock and reset
-- from the input clkin -- from the input clkin
clk_in : in std_ulogic; clk_in : in std_ulogic;
rst : in std_ulogic; rst : in std_ulogic;
system_clk : out std_ulogic; system_clk : out std_ulogic;
system_reset : out std_ulogic; system_reset : out std_ulogic;
core_alt_reset : out std_ulogic; core_alt_reset : out std_ulogic;
pll_locked : out std_ulogic; pll_locked : out std_ulogic;


-- Wishbone ports: -- Wishbone ports:
wb_in : in wishbone_master_out; wb_in : in wishbone_master_out;
wb_out : out wishbone_slave_out; wb_out : out wishbone_slave_out;
wb_is_ctrl : in std_ulogic; wb_ctrl_in : in wb_io_master_out;
wb_is_init : in std_ulogic; wb_ctrl_out : out wb_io_slave_out;
wb_ctrl_is_csr : in std_ulogic;
wb_ctrl_is_init : in std_ulogic;


-- Init core serial debug -- Init core serial debug
serial_tx : out std_ulogic; serial_tx : out std_ulogic;
@ -128,113 +129,85 @@ architecture behaviour of litedram_wrapper is
signal wb_ctrl_ack : std_ulogic; signal wb_ctrl_ack : std_ulogic;
signal wb_ctrl_we : std_ulogic; signal wb_ctrl_we : std_ulogic;


signal wb_init_in : wishbone_master_out; signal wb_init_in : wb_io_master_out;
signal wb_init_out : wishbone_slave_out; signal wb_init_out : wb_io_slave_out;


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

type ram_t is array(0 to (INIT_RAM_SIZE / 8) - 1) of std_logic_vector(63 downto 0);


impure function init_load_ram(name : string) return ram_t is -- alternate core reset address set when DRAM is not initialized.
file ram_file : text open read_mode is name; core_alt_reset <= not init_done;
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) := temp_word;
end loop;
return temp_ram;
end function;


signal init_ram : ram_t := init_load_ram(INIT_RAM_FILE); -- Init code BRAM memory slave
init_ram_0: entity work.dram_init_mem
port map(
clk => system_clk,
wb_in => wb_init_in,
wb_out => wb_init_out
);


attribute ram_style : string; --
attribute ram_style of init_ram: signal is "block"; -- Control bus wishbone: This muxes the wishbone to the CSRs
-- and an internal small one to the init BRAM
--


begin -- Init DRAM wishbone IN signals
wb_init_in.adr <= wb_ctrl_in.adr;
wb_init_in.dat <= wb_ctrl_in.dat;
wb_init_in.sel <= wb_ctrl_in.sel;
wb_init_in.we <= wb_ctrl_in.we;
wb_init_in.stb <= wb_ctrl_in.stb;
wb_init_in.cyc <= wb_ctrl_in.cyc and wb_ctrl_is_init;


-- BRAM Memory slave -- DRAM CSR IN signals
init_ram_0: process(system_clk) wb_ctrl_adr <= x"0000" & wb_ctrl_in.adr(15 downto 2);
variable adr : integer; wb_ctrl_dat_w <= wb_ctrl_in.dat;
begin wb_ctrl_sel <= wb_ctrl_in.sel;
if rising_edge(system_clk) then wb_ctrl_we <= wb_ctrl_in.we;
wb_init_out.ack <= '0'; wb_ctrl_cyc <= wb_ctrl_in.cyc and wb_ctrl_is_csr;
if (wb_init_in.cyc and wb_init_in.stb) = '1' then wb_ctrl_stb <= wb_ctrl_in.stb and wb_ctrl_is_csr;
adr := to_integer((unsigned(wb_init_in.adr(INIT_RAM_ABITS-1 downto 3))));
if wb_init_in.we = '0' then
wb_init_out.dat <= init_ram(adr);
else
for i in 0 to 7 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 <= not wb_init_out.ack;
end if;
end if;
end process;


wb_init_in.adr <= wb_in.adr; -- Ctrl bus wishbone OUT signals
wb_init_in.dat <= wb_in.dat; wb_ctrl_out.ack <= wb_ctrl_ack when wb_ctrl_is_csr = '1'
wb_init_in.sel <= wb_in.sel; else wb_init_out.ack;
wb_init_in.we <= wb_in.we; wb_ctrl_out.dat <= wb_ctrl_dat_r when wb_ctrl_is_csr = '1'
wb_init_in.stb <= wb_in.stb; else wb_init_out.dat;
wb_init_in.cyc <= wb_in.cyc and wb_is_init; wb_ctrl_out.stall <= wb_init_out.stall when wb_ctrl_is_init else
'0' when wb_ctrl_in.cyc = '0' else not wb_ctrl_ack;


-- Address bit 3 selects the top or bottom half of the data --
-- Data bus wishbone to LiteDRAM native port
--
-- Address bit 3 selects the top or bottom half of the data
-- bus (64-bit wishbone vs. 128-bit DRAM interface) -- bus (64-bit wishbone vs. 128-bit DRAM interface)
-- --
-- XXX TODO: Figure out how to pipeline this
--
ad3 <= wb_in.adr(3); ad3 <= wb_in.adr(3);


-- DRAM data interface signals -- Wishbone port IN signals
user_port0_cmd_valid <= (wb_in.cyc and wb_in.stb and not wb_is_ctrl and not wb_is_init) user_port0_cmd_valid <= wb_in.cyc and wb_in.stb when state = CMD else '0';
when state = CMD else '0'; user_port0_cmd_we <= wb_in.we when state = CMD else '0';
user_port0_cmd_we <= wb_in.we when state = CMD else '0';
user_port0_wdata_valid <= '1' when state = MWRITE else '0'; user_port0_wdata_valid <= '1' when state = MWRITE else '0';
user_port0_rdata_ready <= '1' when state = MREAD else '0'; user_port0_rdata_ready <= '1' when state = MREAD else '0';
user_port0_cmd_addr <= wb_in.adr(DRAM_ABITS+3 downto 4); user_port0_cmd_addr <= wb_in.adr(DRAM_ABITS+3 downto 4);
user_port0_wdata_data <= wb_in.dat & wb_in.dat; user_port0_wdata_data <= wb_in.dat & wb_in.dat;
user_port0_wdata_we <= wb_in.sel & "00000000" when ad3 = '1' else user_port0_wdata_we <= wb_in.sel & "00000000" when ad3 = '1' else
"00000000" & wb_in.sel; "00000000" & wb_in.sel;


-- DRAM ctrl interface signals -- Wishbone OUT signals
wb_ctrl_adr <= x"0000" & wb_in.adr(15 downto 2); wb_out.ack <= user_port0_wdata_ready when state = MWRITE else
wb_ctrl_dat_w <= wb_in.dat(31 downto 0);
wb_ctrl_sel <= wb_in.sel(3 downto 0);
wb_ctrl_cyc <= wb_in.cyc and wb_is_ctrl;
wb_ctrl_stb <= wb_in.stb and wb_is_ctrl;
wb_ctrl_we <= wb_in.we;

-- Wishbone out signals
wb_out.ack <= wb_ctrl_ack when wb_is_ctrl ='1' else
wb_init_out.ack when wb_is_init = '1' else
user_port0_wdata_ready when state = MWRITE else
user_port0_rdata_valid when state = MREAD else '0'; user_port0_rdata_valid when state = MREAD else '0';


wb_out.dat <= (x"00000000" & wb_ctrl_dat_r) when wb_is_ctrl = '1' else wb_out.dat <= user_port0_rdata_data(127 downto 64) when ad3 = '1' else
wb_init_out.dat when wb_is_init = '1' else
user_port0_rdata_data(127 downto 64) when ad3 = '1' else
user_port0_rdata_data(63 downto 0); user_port0_rdata_data(63 downto 0);

-- We don't do pipelining yet. -- We don't do pipelining yet.
wb_out.stall <= '0' when wb_in.cyc = '0' else not wb_out.ack; wb_out.stall <= '0' when wb_in.cyc = '0' else not wb_out.ack;


-- Reset ignored, the reset controller use the pll lock signal, -- DRAM user port State machine
-- and alternate core reset address set when DRAM is not initialized.
--
core_alt_reset <= not init_done;

-- State machine
sm: process(system_clk) sm: process(system_clk)
begin begin
@ -255,7 +228,7 @@ begin
if user_port0_rdata_valid = '1' then if user_port0_rdata_valid = '1' then
state <= CMD; state <= CMD;
end if; end if;
end case; end case;
end if; end if;
end if; end if;
end process; end process;

4
litedram/generated/nexys-video/litedram_core.init
Unescape Escape View File

@ -4,10 +4,10 @@ a602487d05009f42
a64b5a7d14004a39 a64b5a7d14004a39
2402004ca64b7b7d 2402004ca64b7b7d
602100003c200000 602100003c200000
6421ffff782107c6 6421f000782107c6
3d80000060213f00 3d80000060213f00
798c07c6618c0000 798c07c6618c0000
618c108c658cffff 618c108c658cf000
4e8004217d8903a6 4e8004217d8903a6
0000000048000002 0000000048000002
0000000000000000 0000000000000000

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

@ -1,5 +1,5 @@
//-------------------------------------------------------------------------------- //--------------------------------------------------------------------------------
// Auto-generated by Migen (0d16e03) & LiteX (3391398a) on 2020-05-15 13:30:49 // 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;

376
soc.vhdl
Unescape Escape View File

@ -10,16 +10,19 @@ use work.common.all;
use work.wishbone_types.all; use work.wishbone_types.all;




-- Memory map: -- Memory map. *** Keep include/microwatt_soc.h updated on changes ***
-- --
-- Main bus:
-- 0x00000000: Block RAM (MEMORY_SIZE) or DRAM depending on syscon -- 0x00000000: Block RAM (MEMORY_SIZE) or DRAM depending on syscon
-- 0x40000000: DRAM (when present) -- 0x40000000: DRAM (when present)
-- 0x80000000: Block RAM (aliased & repeated)

-- IO Bus:
-- 0xc0000000: SYSCON -- 0xc0000000: SYSCON
-- 0xc0002000: UART0 -- 0xc0002000: UART0
-- 0xc0004000: XICS ICP -- 0xc0004000: XICS ICP
-- 0xc0100000: LiteDRAM control (CSRs) -- 0xc0100000: LiteDRAM control (CSRs)
-- 0xf0000000: Block RAM (aliased & repeated) -- 0xf0000000: DRAM init code (if any)
-- 0xffff0000: DRAM init code (if any)


entity soc is entity soc is
generic ( generic (
@ -37,10 +40,12 @@ entity soc is
system_clk : in std_ulogic; system_clk : in std_ulogic;


-- DRAM controller signals -- DRAM controller signals
wb_dram_in : out wishbone_master_out; wb_dram_in : out wishbone_master_out;
wb_dram_out : in wishbone_slave_out; wb_dram_out : in wishbone_slave_out;
wb_dram_ctrl : out std_ulogic; wb_dram_ctrl_in : out wb_io_master_out;
wb_dram_init : out std_ulogic; wb_dram_ctrl_out : in wb_io_slave_out;
wb_dram_is_csr : out std_ulogic;
wb_dram_is_init : out std_ulogic;


-- UART0 signals: -- UART0 signals:
uart0_txd : out std_ulogic; uart0_txd : out std_ulogic;
@ -71,23 +76,31 @@ architecture behaviour of soc is
signal wb_master_in : wishbone_slave_out; signal wb_master_in : wishbone_slave_out;
signal wb_master_out : wishbone_master_out; signal wb_master_out : wishbone_master_out;


-- Main "IO" bus, from main slave decoder to the latch
signal wb_io_in : wishbone_master_out;
signal wb_io_out : wishbone_slave_out;

-- Secondary (smaller) IO bus after the IO bus latch
signal wb_sio_out : wb_io_master_out;
signal wb_sio_in : wb_io_slave_out;

-- Syscon signals -- Syscon signals
signal dram_at_0 : std_ulogic; signal dram_at_0 : std_ulogic;
signal do_core_reset : std_ulogic; signal do_core_reset : std_ulogic;
signal wb_syscon_in : wishbone_master_out; signal wb_syscon_in : wb_io_master_out;
signal wb_syscon_out : wishbone_slave_out; signal wb_syscon_out : wb_io_slave_out;


-- UART0 signals: -- UART0 signals:
signal wb_uart0_in : wishbone_master_out; signal wb_uart0_in : wb_io_master_out;
signal wb_uart0_out : wishbone_slave_out; signal wb_uart0_out : wb_io_slave_out;
signal uart_dat8 : std_ulogic_vector(7 downto 0); signal uart_dat8 : std_ulogic_vector(7 downto 0);


-- XICS0 signals: -- XICS0 signals:
signal wb_xics0_in : wishbone_master_out; signal wb_xics0_in : wb_io_master_out;
signal wb_xics0_out : wishbone_slave_out; signal wb_xics0_out : wb_io_slave_out;
signal int_level_in : std_ulogic_vector(15 downto 0); signal int_level_in : std_ulogic_vector(15 downto 0);


signal xics_to_execute1 : XicsToExecute1Type; signal core_ext_irq : std_ulogic;


-- Main memory signals: -- Main memory signals:
signal wb_bram_in : wishbone_master_out; signal wb_bram_in : wishbone_master_out;
@ -141,7 +154,7 @@ begin
generic map( generic map(
SIM => SIM, SIM => SIM,
DISABLE_FLATTEN => DISABLE_FLATTEN_CORE, DISABLE_FLATTEN => DISABLE_FLATTEN_CORE,
ALT_RESET_ADDRESS => (15 downto 0 => '0', others => '1') ALT_RESET_ADDRESS => (27 downto 0 => '0', others => '1')
) )
port map( port map(
clk => system_clk, clk => system_clk,
@ -157,7 +170,7 @@ begin
dmi_wr => dmi_wr, dmi_wr => dmi_wr,
dmi_ack => dmi_core_ack, dmi_ack => dmi_core_ack,
dmi_req => dmi_core_req, dmi_req => dmi_core_req,
xics_in => xics_to_execute1 ext_irq => core_ext_irq
); );


-- Wishbone bus master arbiter & mux -- Wishbone bus master arbiter & mux
@ -180,90 +193,271 @@ begin
wb_slave_in => wb_master_in wb_slave_in => wb_master_in
); );


-- Wishbone slaves address decoder & mux -- Top level Wishbone slaves address decoder & mux
slave_intercon: process(wb_master_out, wb_bram_out, wb_uart0_out, wb_dram_out, wb_syscon_out) --
-- Selected slave -- From CPU to BRAM, DRAM, IO, selected on top 3 bits and dram_at_0
type slave_type is (SLAVE_SYSCON, -- 0000 - BRAM
SLAVE_UART, -- 0001 - DRAM
SLAVE_BRAM, -- 01xx - DRAM
SLAVE_DRAM, -- 10xx - BRAM
SLAVE_DRAM_INIT, -- 11xx - IO
SLAVE_DRAM_CTRL, --
SLAVE_ICP_0, slave_top_intercon: process(wb_master_out, wb_bram_out, wb_dram_out, wb_io_out, dram_at_0)
SLAVE_NONE); type slave_top_type is (SLAVE_TOP_BRAM,
variable slave : slave_type; SLAVE_TOP_DRAM,
SLAVE_TOP_IO);
variable slave_top : slave_top_type;
variable top_decode : std_ulogic_vector(3 downto 0);
begin begin
-- Simple address decoder. -- Top-level address decoder
slave := SLAVE_NONE; top_decode := wb_master_out.adr(31 downto 29) & dram_at_0;
-- Simple address decoder. Ignore top bits to save silicon for now slave_top := SLAVE_TOP_BRAM;
slave := SLAVE_NONE; if std_match(top_decode, "0000") then
if std_match(wb_master_out.adr, x"0-------") then slave_top := SLAVE_TOP_BRAM;
slave := SLAVE_DRAM when HAS_DRAM and dram_at_0 = '1' else elsif std_match(top_decode, "0001") then
SLAVE_BRAM; slave_top := SLAVE_TOP_DRAM;
elsif std_match(wb_master_out.adr, x"FFFF----") then elsif std_match(top_decode, "01--") then
slave := SLAVE_DRAM_INIT; slave_top := SLAVE_TOP_DRAM;
elsif std_match(wb_master_out.adr, x"F-------") then elsif std_match(top_decode, "10--") then
slave := SLAVE_BRAM; slave_top := SLAVE_TOP_BRAM;
elsif std_match(wb_master_out.adr, x"4-------") and HAS_DRAM then elsif std_match(top_decode, "11--") then
slave := SLAVE_DRAM; slave_top := SLAVE_TOP_IO;
elsif std_match(wb_master_out.adr, x"C0000---") then
slave := SLAVE_SYSCON;
elsif std_match(wb_master_out.adr, x"C0002---") then
slave := SLAVE_UART;
elsif std_match(wb_master_out.adr, x"C01-----") then
slave := SLAVE_DRAM_CTRL;
elsif std_match(wb_master_out.adr, x"C0004---") then
slave := SLAVE_ICP_0;
end if; end if;


-- Wishbone muxing. Defaults: -- Top level wishbone muxing.
wb_bram_in <= wb_master_out; wb_bram_in <= wb_master_out;
wb_bram_in.cyc <= '0'; wb_bram_in.cyc <= '0';
wb_uart0_in <= wb_master_out; wb_dram_in <= wb_master_out;
wb_dram_in.cyc <= '0';
wb_io_in <= wb_master_out;
wb_io_in.cyc <= '0';
case slave_top is
when SLAVE_TOP_BRAM =>
wb_bram_in.cyc <= wb_master_out.cyc;
wb_master_in <= wb_bram_out;
when SLAVE_TOP_DRAM =>
wb_dram_in.cyc <= wb_master_out.cyc;
wb_master_in <= wb_dram_out;
when SLAVE_TOP_IO =>
wb_io_in.cyc <= wb_master_out.cyc;
wb_master_in <= wb_io_out;
end case;
end process slave_top_intercon;

-- IO wishbone slave 64->32 bits converter
--
-- For timing reasons, this adds a one cycle latch on the way both
-- in and out. This relaxes timing and routing pressure on the "main"
-- memory bus by moving all simple IOs to a slower 32-bit bus.
--
-- This implementation is rather dumb at the moment, no stash buffer,
-- so we stall whenever that latch is busy. This can be improved.
--
slave_io_latch: process(system_clk)
-- State
type state_t is (IDLE, WAIT_ACK_BOT, WAIT_ACK_TOP);
variable state : state_t;

-- Misc
variable has_top : boolean;
variable has_bot : boolean;
begin
if rising_edge(system_clk) then
if (rst) then
state := IDLE;
wb_io_out.ack <= '0';
wb_io_out.stall <= '0';
wb_sio_out.cyc <= '0';
wb_sio_out.stb <= '0';
has_top := false;
has_bot := false;
else
case state is
when IDLE =>
-- Clear ACK in case it was set
wb_io_out.ack <= '0';

-- Do we have a cycle ?
if wb_io_in.cyc = '1' and wb_io_in.stb = '1' then
-- Stall master until we are done, we are't (yet) pipelining
-- this, it's all slow IOs.
wb_io_out.stall <= '1';

-- Start cycle downstream
wb_sio_out.cyc <= '1';
wb_sio_out.stb <= '1';

-- Copy write enable to IO out, copy address as well
wb_sio_out.we <= wb_io_in.we;
wb_sio_out.adr <= wb_io_in.adr(wb_sio_out.adr'left downto 3) & "000";

-- Do we have a top word and/or a bottom word ?
has_top := wb_io_in.sel(7 downto 4) /= "0000";
has_bot := wb_io_in.sel(3 downto 0) /= "0000";

-- If we have a bottom word, handle it first, otherwise
-- send the top word down. XXX Split the actual mux out
-- and only generate a control signal.
if has_bot then
if wb_io_in.we = '1' then
wb_sio_out.dat <= wb_io_in.dat(31 downto 0);
end if;
wb_sio_out.sel <= wb_io_in.sel(3 downto 0);

-- Wait for ack
state := WAIT_ACK_BOT;
else
if wb_io_in.we = '1' then
wb_sio_out.dat <= wb_io_in.dat(63 downto 32);
end if;
wb_sio_out.sel <= wb_io_in.sel(7 downto 4);

-- Bump address
wb_sio_out.adr(2) <= '1';

-- Wait for ack
state := WAIT_ACK_TOP;
end if;
end if;
when WAIT_ACK_BOT =>
-- If we aren't stalled by the device, clear stb
if wb_sio_in.stall = '0' then
wb_sio_out.stb <= '0';
end if;

-- Handle ack
if wb_sio_in.ack = '1' then
-- If it's a read, latch the data
if wb_sio_out.we = '0' then
wb_io_out.dat(31 downto 0) <= wb_sio_in.dat;
end if;

-- Do we have a "top" part as well ?
if has_top then
-- Latch data & sel
if wb_io_in.we = '1' then
wb_sio_out.dat <= wb_io_in.dat(63 downto 32);
end if;
wb_sio_out.sel <= wb_io_in.sel(7 downto 4);

-- Bump address and set STB
wb_sio_out.adr(2) <= '1';
wb_sio_out.stb <= '1';

-- Wait for new ack
state := WAIT_ACK_TOP;
else
-- We are done, ack up, clear cyc downstram
wb_sio_out.cyc <= '0';

-- And ack & unstall upstream
wb_io_out.ack <= '1';
wb_io_out.stall <= '0';

-- Wait for next one
state := IDLE;
end if;
end if;
when WAIT_ACK_TOP =>
-- If we aren't stalled by the device, clear stb
if wb_sio_in.stall = '0' then
wb_sio_out.stb <= '0';
end if;

-- Handle ack
if wb_sio_in.ack = '1' then
-- If it's a read, latch the data
if wb_sio_out.we = '0' then
wb_io_out.dat(63 downto 32) <= wb_sio_in.dat;
end if;

-- We are done, ack up, clear cyc downstram
wb_sio_out.cyc <= '0';

-- And ack & unstall upstream
wb_io_out.ack <= '1';
wb_io_out.stall <= '0';

-- Wait for next one
state := IDLE;
end if;
end case;
end if;
end if;
end process;
-- IO wishbone slave intercon.
--
slave_io_intercon: process(wb_sio_out, wb_syscon_out, wb_uart0_out,
wb_dram_ctrl_out, wb_xics0_out)
-- IO branch split:
type slave_io_type is (SLAVE_IO_SYSCON,
SLAVE_IO_UART,
SLAVE_IO_DRAM_INIT,
SLAVE_IO_DRAM_CSR,
SLAVE_IO_ICP_0,
SLAVE_IO_NONE);
variable slave_io : slave_io_type;

variable match : std_ulogic_vector(31 downto 12);
begin

-- Simple address decoder.
slave_io := SLAVE_IO_NONE;
match := "11" & wb_sio_out.adr(29 downto 12);
if std_match(match, x"F----") then
slave_io := SLAVE_IO_DRAM_INIT;
elsif std_match(match, x"C0000") then
slave_io := SLAVE_IO_SYSCON;
elsif std_match(match, x"C0002") then
slave_io := SLAVE_IO_UART;
elsif std_match(match, x"C01--") then
slave_io := SLAVE_IO_DRAM_CSR;
elsif std_match(match, x"C0004") then
slave_io := SLAVE_IO_ICP_0;
end if;
wb_uart0_in <= wb_sio_out;
wb_uart0_in.cyc <= '0'; wb_uart0_in.cyc <= '0';


-- Only give xics 8 bits of wb addr -- Only give xics 8 bits of wb addr
wb_xics0_in <= wb_master_out; wb_xics0_in <= wb_sio_out;
wb_xics0_in.adr <= (others => '0'); wb_xics0_in.adr <= (others => '0');
wb_xics0_in.adr(7 downto 0) <= wb_master_out.adr(7 downto 0); wb_xics0_in.adr(7 downto 0) <= wb_sio_out.adr(7 downto 0);
wb_xics0_in.cyc <= '0'; wb_xics0_in.cyc <= '0';


wb_dram_in <= wb_master_out; wb_dram_ctrl_in <= wb_sio_out;
wb_dram_in.cyc <= '0'; wb_dram_ctrl_in.cyc <= '0';
wb_dram_ctrl <= '0'; wb_dram_is_csr <= '0';
wb_dram_init <= '0'; wb_dram_is_init <= '0';
wb_syscon_in <= wb_master_out;
wb_syscon_in <= wb_sio_out;
wb_syscon_in.cyc <= '0'; wb_syscon_in.cyc <= '0';
case slave is
when SLAVE_BRAM => case slave_io is
wb_bram_in.cyc <= wb_master_out.cyc; when SLAVE_IO_DRAM_INIT =>
wb_master_in <= wb_bram_out; wb_dram_ctrl_in.cyc <= wb_sio_out.cyc;
when SLAVE_DRAM => wb_sio_in <= wb_dram_ctrl_out;
wb_dram_in.cyc <= wb_master_out.cyc; wb_dram_is_init <= '1';
wb_master_in <= wb_dram_out; when SLAVE_IO_DRAM_CSR =>
when SLAVE_DRAM_INIT => wb_dram_ctrl_in.cyc <= wb_sio_out.cyc;
wb_dram_in.cyc <= wb_master_out.cyc; wb_sio_in <= wb_dram_ctrl_out;
wb_master_in <= wb_dram_out; wb_dram_is_csr <= '1';
wb_dram_init <= '1'; when SLAVE_IO_SYSCON =>
when SLAVE_DRAM_CTRL => wb_syscon_in.cyc <= wb_sio_out.cyc;
wb_dram_in.cyc <= wb_master_out.cyc; wb_sio_in <= wb_syscon_out;
wb_master_in <= wb_dram_out; when SLAVE_IO_UART =>
wb_dram_ctrl <= '1'; wb_uart0_in.cyc <= wb_sio_out.cyc;
when SLAVE_SYSCON => wb_sio_in <= wb_uart0_out;
wb_syscon_in.cyc <= wb_master_out.cyc; when SLAVE_IO_ICP_0 =>
wb_master_in <= wb_syscon_out; wb_xics0_in.cyc <= wb_sio_out.cyc;
when SLAVE_UART => wb_sio_in <= wb_xics0_out;
wb_uart0_in.cyc <= wb_master_out.cyc;
wb_master_in <= wb_uart0_out;
when SLAVE_ICP_0 =>
wb_xics0_in.cyc <= wb_master_out.cyc;
wb_master_in <= wb_xics0_out;
when others => when others =>
wb_master_in.dat <= (others => '1'); wb_sio_in.dat <= (others => '1');
wb_master_in.ack <= wb_master_out.stb and wb_master_out.cyc; wb_sio_in.ack <= wb_sio_out.stb and wb_sio_out.cyc;
wb_master_in.stall <= '0'; wb_sio_in.stall <= '0';
end case; end case;
end process slave_intercon;
end process;


-- Syscon slave -- Syscon slave
syscon0: entity work.syscon syscon0: entity work.syscon
@ -287,10 +481,6 @@ begin
-- Simulated memory and UART -- Simulated memory and UART


-- UART0 wishbone slave -- UART0 wishbone slave
-- XXX FIXME: Need a proper wb64->wb8 adapter that
-- converts SELs into low address bits and muxes
-- data accordingly (either that or rejects large
-- cycles).
uart0: entity work.pp_soc_uart uart0: entity work.pp_soc_uart
generic map( generic map(
FIFO_DEPTH => 32 FIFO_DEPTH => 32
@ -309,7 +499,7 @@ begin
wb_we_in => wb_uart0_in.we, wb_we_in => wb_uart0_in.we,
wb_ack_out => wb_uart0_out.ack wb_ack_out => wb_uart0_out.ack
); );
wb_uart0_out.dat <= x"00000000000000" & uart_dat8; wb_uart0_out.dat <= x"000000" & uart_dat8;
wb_uart0_out.stall <= '0' when wb_uart0_in.cyc = '0' else not wb_uart0_out.ack; wb_uart0_out.stall <= '0' when wb_uart0_in.cyc = '0' else not wb_uart0_out.ack;


xics0: entity work.xics xics0: entity work.xics
@ -322,7 +512,7 @@ begin
wb_in => wb_xics0_in, wb_in => wb_xics0_in,
wb_out => wb_xics0_out, wb_out => wb_xics0_out,
int_level_in => int_level_in, int_level_in => int_level_in,
e_out => xics_to_execute1 core_irq_out => core_ext_irq
); );


-- BRAM Memory slave -- BRAM Memory slave

15
syscon.vhdl
Unescape Escape View File

@ -20,8 +20,8 @@ entity syscon is
rst : in std_ulogic; rst : in std_ulogic;


-- Wishbone ports: -- Wishbone ports:
wishbone_in : in wishbone_master_out; wishbone_in : in wb_io_master_out;
wishbone_out : out wishbone_slave_out; wishbone_out : out wb_io_slave_out;


-- System control ports -- System control ports
dram_at_0 : out std_ulogic; dram_at_0 : out std_ulogic;
@ -43,6 +43,9 @@ architecture behaviour of syscon is
constant SYS_REG_CLKINFO : std_ulogic_vector(SYS_REG_BITS-1 downto 0) := "100"; constant SYS_REG_CLKINFO : std_ulogic_vector(SYS_REG_BITS-1 downto 0) := "100";
constant SYS_REG_CTRL : std_ulogic_vector(SYS_REG_BITS-1 downto 0) := "101"; constant SYS_REG_CTRL : std_ulogic_vector(SYS_REG_BITS-1 downto 0) := "101";


-- Muxed reg read signal
signal reg_out : std_ulogic_vector(63 downto 0);

-- INFO register bits -- INFO register bits
constant SYS_REG_INFO_HAS_UART : integer := 0; constant SYS_REG_INFO_HAS_UART : integer := 0;
constant SYS_REG_INFO_HAS_DRAM : integer := 1; constant SYS_REG_INFO_HAS_DRAM : integer := 1;
@ -99,7 +102,7 @@ begin
SYS_REG_CTRL_BITS-1 downto 0 => reg_ctrl); SYS_REG_CTRL_BITS-1 downto 0 => reg_ctrl);


-- Register read mux -- Register read mux
with wishbone_in.adr(SYS_REG_BITS+2 downto 3) select wishbone_out.dat <= with wishbone_in.adr(SYS_REG_BITS+2 downto 3) select reg_out <=
SIG_VALUE when SYS_REG_SIG, SIG_VALUE when SYS_REG_SIG,
reg_info when SYS_REG_INFO, reg_info when SYS_REG_INFO,
reg_braminfo when SYS_REG_BRAMINFO, reg_braminfo when SYS_REG_BRAMINFO,
@ -107,6 +110,8 @@ begin
reg_clkinfo when SYS_REG_CLKINFO, reg_clkinfo when SYS_REG_CLKINFO,
reg_ctrl_out when SYS_REG_CTRL, reg_ctrl_out when SYS_REG_CTRL,
(others => '0') when others; (others => '0') when others;
wishbone_out.dat <= reg_out(63 downto 32) when wishbone_in.adr(2) = '1' else
reg_out(31 downto 0);


-- Register writes -- Register writes
regs_write: process(clk) regs_write: process(clk)
@ -116,7 +121,9 @@ begin
reg_ctrl <= (others => '0'); reg_ctrl <= (others => '0');
else else
if wishbone_in.cyc and wishbone_in.stb and wishbone_in.we then if wishbone_in.cyc and wishbone_in.stb and wishbone_in.we then
if wishbone_in.adr(SYS_REG_BITS+2 downto 3) = SYS_REG_CTRL then -- Change this if CTRL ever has more than 32 bits
if wishbone_in.adr(SYS_REG_BITS+2 downto 3) = SYS_REG_CTRL and
wishbone_in.adr(2) = '0' then
reg_ctrl(SYS_REG_CTRL_BITS-1 downto 0) <= reg_ctrl(SYS_REG_CTRL_BITS-1 downto 0) <=
wishbone_in.dat(SYS_REG_CTRL_BITS-1 downto 0); wishbone_in.dat(SYS_REG_CTRL_BITS-1 downto 0);
end if; end if;

19
tests/xics/xics.h
Unescape Escape View File

@ -1,8 +1,7 @@
#include <stdint.h> #include <stdint.h>


#define XICS_BASE 0xc0004000 #include "microwatt_soc.h"

#include "io.h"
static uint64_t xics_base = XICS_BASE;


#define XICS_XIRR_POLL 0x0 #define XICS_XIRR_POLL 0x0
#define XICS_XIRR 0x4 #define XICS_XIRR 0x4
@ -11,26 +10,20 @@ static uint64_t xics_base = XICS_BASE;


uint8_t xics_read8(int offset) uint8_t xics_read8(int offset)
{ {
uint32_t val; return readb(XICS_BASE + offset);

__asm__ volatile("lbzcix %0,%1,%2" : "=r" (val) : "b" (xics_base), "r" (offset));
return val;
} }


void xics_write8(int offset, uint8_t val) void xics_write8(int offset, uint8_t val)
{ {
__asm__ volatile("stbcix %0,%1,%2" : : "r" (val), "b" (xics_base), "r" (offset)); writeb(val, XICS_BASE + offset);
} }


uint32_t xics_read32(int offset) uint32_t xics_read32(int offset)
{ {
uint32_t val; return readl(XICS_BASE + offset);

__asm__ volatile("lwzcix %0,%1,%2" : "=r" (val) : "b" (xics_base), "r" (offset));
return val;
} }


void xics_write32(int offset, uint32_t val) void xics_write32(int offset, uint32_t val)
{ {
__asm__ volatile("stwcix %0,%1,%2" : : "r" (val), "b" (xics_base), "r" (offset)); writel(val, XICS_BASE + offset);
} }

21
wishbone_types.vhdl
Unescape Escape View File

@ -2,6 +2,9 @@ library ieee;
use ieee.std_logic_1164.all; use ieee.std_logic_1164.all;


package wishbone_types is package wishbone_types is
--
-- Main CPU bus. 32-bit address, 64-bit data
--
constant wishbone_addr_bits : integer := 32; constant wishbone_addr_bits : integer := 32;
constant wishbone_data_bits : integer := 64; constant wishbone_data_bits : integer := 64;
constant wishbone_sel_bits : integer := wishbone_data_bits/8; constant wishbone_sel_bits : integer := wishbone_data_bits/8;
@ -30,4 +33,22 @@ package wishbone_types is
type wishbone_master_out_vector is array (natural range <>) of wishbone_master_out; type wishbone_master_out_vector is array (natural range <>) of wishbone_master_out;
type wishbone_slave_out_vector is array (natural range <>) of wishbone_slave_out; type wishbone_slave_out_vector is array (natural range <>) of wishbone_slave_out;


--
-- IO Bus to a device, 30-bit address, 32-bits data
--
type wb_io_master_out is record
adr : std_ulogic_vector(29 downto 0);
dat : std_ulogic_vector(31 downto 0);
sel : std_ulogic_vector(3 downto 0);
cyc : std_ulogic;
stb : std_ulogic;
we : std_ulogic;
end record;

type wb_io_slave_out is record
dat : std_ulogic_vector(31 downto 0);
ack : std_ulogic;
stall : std_ulogic;
end record;
end package wishbone_types; end package wishbone_types;

101
xics.vhdl
Unescape Escape View File

@ -30,12 +30,12 @@ entity xics is
clk : in std_logic; clk : in std_logic;
rst : in std_logic; rst : in std_logic;


wb_in : in wishbone_master_out; wb_in : in wb_io_master_out;
wb_out : out wishbone_slave_out; wb_out : out wb_io_slave_out;


int_level_in : in std_ulogic_vector(LEVEL_NUM - 1 downto 0); int_level_in : in std_ulogic_vector(LEVEL_NUM - 1 downto 0);


e_out : out XicsToExecute1Type core_irq_out : out std_ulogic
); );
end xics; end xics;


@ -47,7 +47,7 @@ architecture behaviour of xics is
mfrr : std_ulogic_vector(7 downto 0); mfrr : std_ulogic_vector(7 downto 0);
mfrr_pending : std_ulogic; mfrr_pending : std_ulogic;
irq : std_ulogic; irq : std_ulogic;
wb_rd_data : wishbone_data_type; wb_rd_data : std_ulogic_vector(31 downto 0);
wb_ack : std_ulogic; wb_ack : std_ulogic;
end record; end record;
constant reg_internal_init : reg_internal_t := constant reg_internal_init : reg_internal_t :=
@ -62,11 +62,11 @@ architecture behaviour of xics is
-- hardwire the hardware IRQ priority -- hardwire the hardware IRQ priority
constant HW_PRIORITY : std_ulogic_vector(7 downto 0) := x"80"; constant HW_PRIORITY : std_ulogic_vector(7 downto 0) := x"80";


-- 32 bit offsets for each presentation -- 8 bit offsets for each presentation
constant XIRR_POLL : std_ulogic_vector(31 downto 0) := x"00000000"; constant XIRR_POLL : std_ulogic_vector(7 downto 0) := x"00";
constant XIRR : std_ulogic_vector(31 downto 0) := x"00000004"; constant XIRR : std_ulogic_vector(7 downto 0) := x"04";
constant RESV0 : std_ulogic_vector(31 downto 0) := x"00000008"; constant RESV0 : std_ulogic_vector(7 downto 0) := x"08";
constant MFRR : std_ulogic_vector(31 downto 0) := x"0000000c"; constant MFRR : std_ulogic_vector(7 downto 0) := x"0c";


begin begin


@ -80,7 +80,7 @@ begin
wb_out.dat <= r.wb_rd_data; wb_out.dat <= r.wb_rd_data;
wb_out.ack <= r.wb_ack; wb_out.ack <= r.wb_ack;
wb_out.stall <= '0'; -- never stall wishbone wb_out.stall <= '0'; -- never stall wishbone
e_out.irq <= r.irq; core_irq_out <= r.irq;


comb : process(all) comb : process(all)
variable v : reg_internal_t; variable v : reg_internal_t;
@ -95,62 +95,73 @@ begin
irq_eoi := '0'; irq_eoi := '0';


if wb_in.cyc = '1' and wb_in.stb = '1' then if wb_in.cyc = '1' and wb_in.stb = '1' then
-- wishbone addresses we get are 64 bit alligned, so we
-- need to use the sel bits to get 32 bit chunks.
v.wb_ack := '1'; -- always ack v.wb_ack := '1'; -- always ack
if wb_in.we = '1' then -- write if wb_in.we = '1' then -- write
-- writes to both XIRR are the same -- writes to both XIRR are the same
if wb_in.adr = XIRR_POLL then case wb_in.adr(7 downto 0) is
report "XICS XIRR_POLL/XIRR write"; when XIRR_POLL =>
if wb_in.sel = x"0f" then -- 4 bytes report "XICS XIRR_POLL write";
if wb_in.sel = x"f" then -- 4 bytes
v.cppr := wb_in.dat(31 downto 24);
elsif wb_in.sel = x"1" then -- 1 byte
v.cppr := wb_in.dat(7 downto 0);
end if;
when XIRR =>
if wb_in.sel = x"f" then -- 4 byte
report "XICS XIRR write word:" & to_hstring(wb_in.dat);
v.cppr := wb_in.dat(31 downto 24); v.cppr := wb_in.dat(31 downto 24);
elsif wb_in.sel = x"f0" then -- 4 byte
v.cppr := wb_in.dat(63 downto 56);
irq_eoi := '1'; irq_eoi := '1';
elsif wb_in.sel = x"01" then -- 1 byte elsif wb_in.sel = x"1" then -- 1 byte
report "XICS XIRR write byte:" & to_hstring(wb_in.dat(7 downto 0));
v.cppr := wb_in.dat(7 downto 0); v.cppr := wb_in.dat(7 downto 0);
elsif wb_in.sel = x"10" then -- 1 byte else
v.cppr := wb_in.dat(39 downto 32); report "XICS XIRR UNSUPPORTED write ! sel=" & to_hstring(wb_in.sel);
end if; end if;

when MFRR =>
elsif wb_in.adr = RESV0 then if wb_in.sel = x"f" then -- 4 bytes
report "XICS MFRR write"; report "XICS MFRR write word:" & to_hstring(wb_in.dat);
if wb_in.sel = x"f0" then -- 4 bytes
v.mfrr_pending := '1'; v.mfrr_pending := '1';
v.mfrr := wb_in.dat(63 downto 56); v.mfrr := wb_in.dat(31 downto 24);
elsif wb_in.sel = x"10" then -- 1 byte elsif wb_in.sel = x"1" then -- 1 byte
report "XICS MFRR write byte:" & to_hstring(wb_in.dat(7 downto 0));
v.mfrr_pending := '1'; v.mfrr_pending := '1';
v.mfrr := wb_in.dat(39 downto 32); v.mfrr := wb_in.dat(7 downto 0);
else
report "XICS MFRR UNSUPPORTED write ! sel=" & to_hstring(wb_in.sel);
end if; end if;

when others =>
end if; end case;


else -- read else -- read
v.wb_rd_data := (others => '0'); v.wb_rd_data := (others => '0');


if wb_in.adr = XIRR_POLL then case wb_in.adr(7 downto 0) is
report "XICS XIRR_POLL/XIRR read"; when XIRR_POLL =>
if wb_in.sel = x"0f" then report "XICS XIRR_POLL read";
if wb_in.sel = x"f" then
v.wb_rd_data(23 downto 0) := r.xisr; v.wb_rd_data(23 downto 0) := r.xisr;
v.wb_rd_data(31 downto 24) := r.cppr; v.wb_rd_data(31 downto 24) := r.cppr;
elsif wb_in.sel = x"f0" then elsif wb_in.sel = x"1" then
v.wb_rd_data(55 downto 32) := r.xisr;
v.wb_rd_data(63 downto 56) := r.cppr;
xirr_accept_rd := '1';
elsif wb_in.sel = x"01" then
v.wb_rd_data(7 downto 0) := r.cppr; v.wb_rd_data(7 downto 0) := r.cppr;
elsif wb_in.sel = x"10" then end if;
v.wb_rd_data(39 downto 32) := r.cppr; when XIRR =>
report "XICS XIRR read";
if wb_in.sel = x"f" then
v.wb_rd_data(23 downto 0) := r.xisr;
v.wb_rd_data(31 downto 24) := r.cppr;
xirr_accept_rd := '1';
elsif wb_in.sel = x"1" then
v.wb_rd_data(7 downto 0) := r.cppr;
end if; end if;

when MFRR =>
elsif wb_in.adr = RESV0 then
report "XICS MFRR read"; report "XICS MFRR read";
if wb_in.sel = x"f0" then -- 4 bytes if wb_in.sel = x"f" then -- 4 bytes
v.wb_rd_data(63 downto 56) := r.mfrr; v.wb_rd_data(31 downto 24) := r.mfrr;
elsif wb_in.sel = x"10" then -- 1 byte elsif wb_in.sel = x"1" then -- 1 byte
v.wb_rd_data( 7 downto 0) := r.mfrr; v.wb_rd_data( 7 downto 0) := r.mfrr;
end if; end if;
end if; when others =>
end case;
end if; end if;
end if; end if;



Write Preview
Loading…
Cancel
Save