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Commit 9b65f5e0 authored by Frederik Pfautsch (MLE)'s avatar Frederik Pfautsch (MLE)
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modules/xilinx/generic_dpram_inst_7series.vhd: Load initial content from file 


Signed-off-by: default avatarFrederik Pfautsch <frederik.pfautsch@missinglinkelectronics.com>
parent 1f085a75
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1 merge request!66Add macro-based dpram for Xilinx/AMD 7Series FPGA
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modules/genrams/xilinx/generic_dpram_inst_7series.vhd
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− 1
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......@@ -30,6 +30,9 @@ library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
library std;
use std.textio.all;
library unisim;
use unisim.vcomponents.all;
......@@ -72,12 +75,79 @@ entity generic_dpram_inst_7series is
end generic_dpram_inst_7series;
architecture syn of generic_dpram_inst_7series is
type t_bv_array is array (integer range <>) of bit_vector(g_data_width-1 downto 0);
impure function f_load_bv_from_file(
file_name : in string;
mem_size : in integer;
mem_width : in integer;
fail_if_notfound : boolean)
return t_bv_array is
FILE f_in : text;
variable l : line;
variable tmp_bv : bit_vector(mem_width-1 downto 0);
variable tmp_sv : std_logic_vector(mem_width-1 downto 0);
variable mem: t_bv_array(0 to mem_size-1) := (others => to_bitvector(std_logic_vector(to_unsigned(0, g_data_width))));
variable status : file_open_status;
begin
if f_empty_file_name(file_name) then
return mem;
end if;
file_open(status, f_in, file_name, read_mode);
f_file_open_check(file_name, status, fail_if_notfound);
for I in 0 to mem_size-1 loop
if not endfile(f_in) then
readline (f_in, l);
-- read function gives us bit_vector
read (l, tmp_bv);
else
tmp_bv := (others => '0');
end if;
mem(I) := tmp_bv;
end loop;
if not endfile(f_in) then
report "f_load_mem_from_file(): file '"&file_name&"' is bigger than available memory" severity FAILURE;
end if;
file_close(f_in);
return mem;
end f_load_bv_from_file;
impure function f_file_to_bitvector256(
mem : in t_bv_array(0 to g_size-1);
ram_idx : in integer;
idx : in integer)
return bit_vector is
variable vec : bit_vector(255 downto 0) := (others => '0');
begin
-- If no file was given, there is nothing to convert, just return
if (g_init_file = "" or g_init_file = "none") then
return vec;
end if;
if 256 mod g_data_width > 0 then
report "f_file_to_bitvector256(): 256 is not a multiple of g_data_width" severity FAILURE;
end if;
for J in 0 to (256 / g_data_width) - 1 loop
vec((J+1) * g_data_width - 1 downto J * g_data_width) := mem((ram_idx * 128 + idx) * 256 / g_data_width + J);
end loop;
return vec;
end f_file_to_bitvector256;
constant c_num_bytes : integer := (g_data_width+7)/8;
constant c_ram_depth : integer := 4096 / c_num_bytes;
constant c_ram_count : integer := (g_size + (c_ram_depth - 1))/c_ram_depth;
type t_do is array(0 to c_ram_count-1) of std_logic_vector(g_data_width-1 downto 0);
constant mem : t_bv_array(0 to g_size-1) := f_load_bv_from_file(g_init_file, g_size, g_data_width, g_fail_if_file_not_found);
signal mux_doa : t_do;
signal mux_dob : t_do;
......@@ -166,7 +236,137 @@ begin
WRITE_MODE_A => to_upper(g_addr_conflict_resolution), -- "WRITE_FIRST", "READ_FIRST" or "NO_CHANGE"
WRITE_MODE_B => to_upper(g_addr_conflict_resolution), -- "WRITE_FIRST", "READ_FIRST" or "NO_CHANGE"
WRITE_WIDTH_A => g_data_width, -- Valid values are 1-36 (19-36 only valid when BRAM_SIZE="36Kb")
WRITE_WIDTH_B => g_data_width -- Valid values are 1-36 (19-36 only valid when BRAM_SIZE="36Kb")
WRITE_WIDTH_B => g_data_width, -- Valid values are 1-36 (19-36 only valid when BRAM_SIZE="36Kb")
INIT_00 => f_file_to_bitvector256(mem, I, 0),
INIT_01 => f_file_to_bitvector256(mem, I, 1),
INIT_02 => f_file_to_bitvector256(mem, I, 2),
INIT_03 => f_file_to_bitvector256(mem, I, 3),
INIT_04 => f_file_to_bitvector256(mem, I, 4),
INIT_05 => f_file_to_bitvector256(mem, I, 5),
INIT_06 => f_file_to_bitvector256(mem, I, 6),
INIT_07 => f_file_to_bitvector256(mem, I, 7),
INIT_08 => f_file_to_bitvector256(mem, I, 8),
INIT_09 => f_file_to_bitvector256(mem, I, 9),
INIT_0A => f_file_to_bitvector256(mem, I, 10),
INIT_0B => f_file_to_bitvector256(mem, I, 11),
INIT_0C => f_file_to_bitvector256(mem, I, 12),
INIT_0D => f_file_to_bitvector256(mem, I, 13),
INIT_0E => f_file_to_bitvector256(mem, I, 14),
INIT_0F => f_file_to_bitvector256(mem, I, 15),
INIT_10 => f_file_to_bitvector256(mem, I, 16),
INIT_11 => f_file_to_bitvector256(mem, I, 17),
INIT_12 => f_file_to_bitvector256(mem, I, 18),
INIT_13 => f_file_to_bitvector256(mem, I, 19),
INIT_14 => f_file_to_bitvector256(mem, I, 20),
INIT_15 => f_file_to_bitvector256(mem, I, 21),
INIT_16 => f_file_to_bitvector256(mem, I, 22),
INIT_17 => f_file_to_bitvector256(mem, I, 23),
INIT_18 => f_file_to_bitvector256(mem, I, 24),
INIT_19 => f_file_to_bitvector256(mem, I, 25),
INIT_1A => f_file_to_bitvector256(mem, I, 26),
INIT_1B => f_file_to_bitvector256(mem, I, 27),
INIT_1C => f_file_to_bitvector256(mem, I, 28),
INIT_1D => f_file_to_bitvector256(mem, I, 29),
INIT_1E => f_file_to_bitvector256(mem, I, 30),
INIT_1F => f_file_to_bitvector256(mem, I, 31),
INIT_20 => f_file_to_bitvector256(mem, I, 32),
INIT_21 => f_file_to_bitvector256(mem, I, 33),
INIT_22 => f_file_to_bitvector256(mem, I, 34),
INIT_23 => f_file_to_bitvector256(mem, I, 35),
INIT_24 => f_file_to_bitvector256(mem, I, 36),
INIT_25 => f_file_to_bitvector256(mem, I, 37),
INIT_26 => f_file_to_bitvector256(mem, I, 38),
INIT_27 => f_file_to_bitvector256(mem, I, 39),
INIT_28 => f_file_to_bitvector256(mem, I, 40),
INIT_29 => f_file_to_bitvector256(mem, I, 41),
INIT_2A => f_file_to_bitvector256(mem, I, 42),
INIT_2B => f_file_to_bitvector256(mem, I, 43),
INIT_2C => f_file_to_bitvector256(mem, I, 44),
INIT_2D => f_file_to_bitvector256(mem, I, 45),
INIT_2E => f_file_to_bitvector256(mem, I, 46),
INIT_2F => f_file_to_bitvector256(mem, I, 47),
INIT_30 => f_file_to_bitvector256(mem, I, 48),
INIT_31 => f_file_to_bitvector256(mem, I, 49),
INIT_32 => f_file_to_bitvector256(mem, I, 50),
INIT_33 => f_file_to_bitvector256(mem, I, 51),
INIT_34 => f_file_to_bitvector256(mem, I, 52),
INIT_35 => f_file_to_bitvector256(mem, I, 53),
INIT_36 => f_file_to_bitvector256(mem, I, 54),
INIT_37 => f_file_to_bitvector256(mem, I, 55),
INIT_38 => f_file_to_bitvector256(mem, I, 56),
INIT_39 => f_file_to_bitvector256(mem, I, 57),
INIT_3A => f_file_to_bitvector256(mem, I, 58),
INIT_3B => f_file_to_bitvector256(mem, I, 59),
INIT_3C => f_file_to_bitvector256(mem, I, 60),
INIT_3D => f_file_to_bitvector256(mem, I, 61),
INIT_3E => f_file_to_bitvector256(mem, I, 62),
INIT_3F => f_file_to_bitvector256(mem, I, 63),
-- The next set of INIT_xx are valid when configured as 36Kb
INIT_40 => f_file_to_bitvector256(mem, I, 64),
INIT_41 => f_file_to_bitvector256(mem, I, 65),
INIT_42 => f_file_to_bitvector256(mem, I, 66),
INIT_43 => f_file_to_bitvector256(mem, I, 67),
INIT_44 => f_file_to_bitvector256(mem, I, 68),
INIT_45 => f_file_to_bitvector256(mem, I, 69),
INIT_46 => f_file_to_bitvector256(mem, I, 70),
INIT_47 => f_file_to_bitvector256(mem, I, 71),
INIT_48 => f_file_to_bitvector256(mem, I, 72),
INIT_49 => f_file_to_bitvector256(mem, I, 73),
INIT_4A => f_file_to_bitvector256(mem, I, 74),
INIT_4B => f_file_to_bitvector256(mem, I, 75),
INIT_4C => f_file_to_bitvector256(mem, I, 76),
INIT_4D => f_file_to_bitvector256(mem, I, 77),
INIT_4E => f_file_to_bitvector256(mem, I, 78),
INIT_4F => f_file_to_bitvector256(mem, I, 79),
INIT_50 => f_file_to_bitvector256(mem, I, 80),
INIT_51 => f_file_to_bitvector256(mem, I, 81),
INIT_52 => f_file_to_bitvector256(mem, I, 82),
INIT_53 => f_file_to_bitvector256(mem, I, 83),
INIT_54 => f_file_to_bitvector256(mem, I, 84),
INIT_55 => f_file_to_bitvector256(mem, I, 85),
INIT_56 => f_file_to_bitvector256(mem, I, 86),
INIT_57 => f_file_to_bitvector256(mem, I, 87),
INIT_58 => f_file_to_bitvector256(mem, I, 88),
INIT_59 => f_file_to_bitvector256(mem, I, 89),
INIT_5A => f_file_to_bitvector256(mem, I, 90),
INIT_5B => f_file_to_bitvector256(mem, I, 91),
INIT_5C => f_file_to_bitvector256(mem, I, 92),
INIT_5D => f_file_to_bitvector256(mem, I, 93),
INIT_5E => f_file_to_bitvector256(mem, I, 94),
INIT_5F => f_file_to_bitvector256(mem, I, 95),
INIT_60 => f_file_to_bitvector256(mem, I, 96),
INIT_61 => f_file_to_bitvector256(mem, I, 97),
INIT_62 => f_file_to_bitvector256(mem, I, 98),
INIT_63 => f_file_to_bitvector256(mem, I, 99),
INIT_64 => f_file_to_bitvector256(mem, I, 100),
INIT_65 => f_file_to_bitvector256(mem, I, 101),
INIT_66 => f_file_to_bitvector256(mem, I, 102),
INIT_67 => f_file_to_bitvector256(mem, I, 103),
INIT_68 => f_file_to_bitvector256(mem, I, 104),
INIT_69 => f_file_to_bitvector256(mem, I, 105),
INIT_6A => f_file_to_bitvector256(mem, I, 106),
INIT_6B => f_file_to_bitvector256(mem, I, 107),
INIT_6C => f_file_to_bitvector256(mem, I, 108),
INIT_6D => f_file_to_bitvector256(mem, I, 109),
INIT_6E => f_file_to_bitvector256(mem, I, 110),
INIT_6F => f_file_to_bitvector256(mem, I, 111),
INIT_70 => f_file_to_bitvector256(mem, I, 112),
INIT_71 => f_file_to_bitvector256(mem, I, 113),
INIT_72 => f_file_to_bitvector256(mem, I, 114),
INIT_73 => f_file_to_bitvector256(mem, I, 115),
INIT_74 => f_file_to_bitvector256(mem, I, 116),
INIT_75 => f_file_to_bitvector256(mem, I, 117),
INIT_76 => f_file_to_bitvector256(mem, I, 118),
INIT_77 => f_file_to_bitvector256(mem, I, 119),
INIT_78 => f_file_to_bitvector256(mem, I, 120),
INIT_79 => f_file_to_bitvector256(mem, I, 121),
INIT_7A => f_file_to_bitvector256(mem, I, 122),
INIT_7B => f_file_to_bitvector256(mem, I, 123),
INIT_7C => f_file_to_bitvector256(mem, I, 124),
INIT_7D => f_file_to_bitvector256(mem, I, 125),
INIT_7E => f_file_to_bitvector256(mem, I, 126),
INIT_7F => f_file_to_bitvector256(mem, I, 127)
)
port map (
DOA => mux_doa(I), -- Output port-A data, width defined by READ_WIDTH_A parameter
......
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