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libcache.vhd
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Mise a jour Projets blanc
 r100 ------------------------------------------------------------------------------
-- This file is a part of the GRLIB VHDL IP LIBRARY
-- Copyright (C) 2003 - 2008, Gaisler Research
-- Copyright (C) 2008 - 2010, Aeroflex Gaisler
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; either version 2 of the License, or
-- (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-----------------------------------------------------------------------------
-- Entity: libcache
-- File: libcache.vhd
-- Author: Jiri Gaisler, Edvin Catovic, Gaisler Research
-- Description: Cache-related types and components
------------------------------------------------------------------------------
library ieee;
use ieee.std_logic_1164.all;
library grlib;
use grlib.amba.all;
use grlib.stdlib.all;
library techmap;
use techmap.gencomp.all;
library gaisler;
use gaisler.libiu.all;
use gaisler.mmuconfig.all;
use gaisler.mmuiface.all;
package libcache is
constant TAG_HIGH : integer := 31;
constant CTAG_LRRPOS : integer := 9;
constant CTAG_LOCKPOS : integer := 8;
constant MAXSETS : integer := 4;
-- 3-way set permutations
-- s012 => set 0 - least recently used
-- set 2 - most recently used
constant s012 : std_logic_vector(2 downto 0) := "000";
constant s021 : std_logic_vector(2 downto 0) := "001";
constant s102 : std_logic_vector(2 downto 0) := "010";
constant s120 : std_logic_vector(2 downto 0) := "011";
constant s201 : std_logic_vector(2 downto 0) := "100";
constant s210 : std_logic_vector(2 downto 0) := "101";
-- 4-way set permutations
-- s0123 => set 0 - least recently used
-- set 3 - most recently used
constant s0123 : std_logic_vector(4 downto 0) := "00000";
constant s0132 : std_logic_vector(4 downto 0) := "00001";
constant s0213 : std_logic_vector(4 downto 0) := "00010";
constant s0231 : std_logic_vector(4 downto 0) := "00011";
constant s0312 : std_logic_vector(4 downto 0) := "00100";
constant s0321 : std_logic_vector(4 downto 0) := "00101";
constant s1023 : std_logic_vector(4 downto 0) := "00110";
constant s1032 : std_logic_vector(4 downto 0) := "00111";
constant s1203 : std_logic_vector(4 downto 0) := "01000";
constant s1230 : std_logic_vector(4 downto 0) := "01001";
constant s1302 : std_logic_vector(4 downto 0) := "01010";
constant s1320 : std_logic_vector(4 downto 0) := "01011";
constant s2013 : std_logic_vector(4 downto 0) := "01100";
constant s2031 : std_logic_vector(4 downto 0) := "01101";
constant s2103 : std_logic_vector(4 downto 0) := "01110";
constant s2130 : std_logic_vector(4 downto 0) := "01111";
constant s2301 : std_logic_vector(4 downto 0) := "10000";
constant s2310 : std_logic_vector(4 downto 0) := "10001";
constant s3012 : std_logic_vector(4 downto 0) := "10010";
constant s3021 : std_logic_vector(4 downto 0) := "10011";
constant s3102 : std_logic_vector(4 downto 0) := "10100";
constant s3120 : std_logic_vector(4 downto 0) := "10101";
constant s3201 : std_logic_vector(4 downto 0) := "10110";
constant s3210 : std_logic_vector(4 downto 0) := "10111";
type lru_3set_table_vector_type is array(0 to 2) of std_logic_vector(2 downto 0);
type lru_3set_table_type is array (0 to 7) of lru_3set_table_vector_type;
constant lru_3set_table : lru_3set_table_type :=
( (s120, s021, s012), -- s012
(s210, s021, s012), -- s021
(s120, s021, s102), -- s102
(s120, s201, s102), -- s120
(s210, s201, s012), -- s201
(s210, s201, s102), -- s210
(s210, s201, s102), -- dummy
(s210, s201, s102) -- dummy
);
type lru_4set_table_vector_type is array(0 to 3) of std_logic_vector(4 downto 0);
type lru_4set_table_type is array(0 to 31) of lru_4set_table_vector_type;
constant lru_4set_table : lru_4set_table_type :=
( (s1230, s0231, s0132, s0123), -- s0123
(s1320, s0321, s0132, s0123), -- s0132
(s2130, s0231, s0132, s0213), -- s0213
(s2310, s0231, s0312, s0213), -- s0231
(s3120, s0321, s0312, s0123), -- s0312
(s3210, s0321, s0312, s0213), -- s0321
(s1230, s0231, s1032, s1023), -- s1023
(s1320, s0321, s1032, s1023), -- s1032
(s1230, s2031, s1032, s1203), -- s1203
(s1230, s2301, s1302, s1203), -- s1230
(s1320, s3021, s1302, s1023), -- s1302
(s1320, s3201, s1302, s1203), -- s1320
(s2130, s2031, s0132, s2013), -- s2013
(s2310, s2031, s0312, s2013), -- s2031
(s2130, s2031, s1032, s2103), -- s2103
(s2130, s2301, s1302, s2103), -- s2130
(s2310, s2301, s3012, s2013), -- s2301
(s2310, s2301, s3102, s2103), -- s2310
(s3120, s3021, s3012, s0123), -- s3012
(s3210, s3021, s3012, s0213), -- s3021
(s3120, s3021, s3102, s1023), -- s3102
(s3120, s3201, s3102, s1203), -- s3120
(s3210, s3201, s3012, s2013), -- s3201
(s3210, s3201, s3102, s2103), -- s3210
(s3210, s3201, s3102, s2103), -- dummy
(s3210, s3201, s3102, s2103), -- dummy
(s3210, s3201, s3102, s2103), -- dummy
(s3210, s3201, s3102, s2103), -- dummy
(s3210, s3201, s3102, s2103), -- dummy
(s3210, s3201, s3102, s2103), -- dummy
(s3210, s3201, s3102, s2103), -- dummy
(s3210, s3201, s3102, s2103) -- dummy
);
type lru3_repl_table_single_type is array(0 to 2) of integer range 0 to 2;
type lru3_repl_table_type is array(0 to 7) of lru3_repl_table_single_type;
constant lru3_repl_table : lru3_repl_table_type :=
( (0, 1, 2), -- s012
(0, 2, 2), -- s021
(1, 1, 2), -- s102
(1, 1, 2), -- s120
(2, 2, 2), -- s201
(2, 2, 2), -- s210
(2, 2, 2), -- dummy
(2, 2, 2) -- dummy
);
type lru4_repl_table_single_type is array(0 to 3) of integer range 0 to 3;
type lru4_repl_table_type is array(0 to 31) of lru4_repl_table_single_type;
constant lru4_repl_table : lru4_repl_table_type :=
( (0, 1, 2, 3), -- s0123
(0, 1, 3, 3), -- s0132
(0, 2, 2, 3), -- s0213
(0, 2, 2, 3), -- s0231
(0, 3, 3, 3), -- s0312
(0, 3, 3, 3), -- s0321
(1, 1, 2, 3), -- s1023
(1, 1, 3, 3), -- s1032
(1, 1, 2, 3), -- s1203
(1, 1, 2, 3), -- s1230
(1, 1, 3, 3), -- s1302
(1, 1, 3, 3), -- s1320
(2, 2, 2, 3), -- s2013
(2, 2, 2, 3), -- s2031
(2, 2, 2, 3), -- s2103
(2, 2, 2, 3), -- s2130
(2, 2, 2, 3), -- s2301
(2, 2, 2, 3), -- s2310
(3, 3, 3, 3), -- s3012
(3, 3, 3, 3), -- s3021
(3, 3, 3, 3), -- s3102
(3, 3, 3, 3), -- s3120
(3, 3, 3, 3), -- s3201
(3, 3, 3, 3), -- s3210
(0, 0, 0, 0), -- dummy
(0, 0, 0, 0), -- dummy
(0, 0, 0, 0), -- dummy
(0, 0, 0, 0), -- dummy
(0, 0, 0, 0), -- dummy
(0, 0, 0, 0), -- dummy
(0, 0, 0, 0), -- dummy
(0, 0, 0, 0) -- dummy
);
type ildram_in_type is record
enable : std_ulogic;
read : std_ulogic;
write : std_ulogic;
end record;
subtype ctxword is std_logic_vector(M_CTX_SZ-1 downto 0);
type ctxdatatype is array (0 to 3) of ctxword;
type icram_in_type is record
address : std_logic_vector(19 downto 0);
tag : cdatatype;
twrite : std_logic_vector(0 to 3);
tenable : std_ulogic;
flush : std_ulogic;
data : std_logic_vector(31 downto 0);
denable : std_ulogic;
dwrite : std_logic_vector(0 to 3);
ldramin : ildram_in_type;
ctx : std_logic_vector(M_CTX_SZ-1 downto 0);
tpar : cpartype;
dpar : std_logic_vector(3 downto 0);
end record;
type icram_out_type is record
tag : cdatatype;
data : cdatatype;
ctx : ctxdatatype;
tpar : cpartype;
dpar : cpartype;
end record;
type ldram_in_type is record
address : std_logic_vector(23 downto 2);
enable : std_ulogic;
read : std_ulogic;
write : std_ulogic;
end record;
type dcram_in_type is record
address : std_logic_vector(19 downto 0);
tag : cdatatype; --std_logic_vector(31 downto 0);
ptag : cdatatype; --std_logic_vector(31 downto 0);
twrite : std_logic_vector(0 to 3);
tpwrite : std_logic_vector(0 to 3);
tenable : std_logic_vector(0 to 3);
flush : std_ulogic;
data : cdatatype;
denable : std_logic_vector(0 to 3);
dwrite : std_logic_vector(0 to 3);
senable : std_logic_vector(0 to 3);
swrite : std_logic_vector(0 to 3);
saddress : std_logic_vector(19 downto 0);
faddress : std_logic_vector(19 downto 0);
spar : std_logic;
ldramin : ldram_in_type;
ctx : ctxdatatype;
tpar : cpartype;
dpar : cpartype;
tdiag : std_logic_vector(3 downto 0);
ddiag : std_logic_vector(3 downto 0);
sdiag : std_logic_vector(3 downto 0);
end record;
type dcram_out_type is record
tag : cdatatype;
data : cdatatype;
stag : cdatatype;
ctx : ctxdatatype;
tpar : cpartype; -- tag parity
dpar : cpartype; -- data parity
spar : std_logic_vector(3 downto 0); -- snoop tag parity
end record;
type cram_in_type is record
icramin : icram_in_type;
dcramin : dcram_in_type;
end record;
type cram_out_type is record
icramo : icram_out_type;
dcramo : dcram_out_type;
end record;
type memory_ic_in_type is record
address : std_logic_vector(31 downto 0); -- memory address
burst : std_ulogic; -- burst request
req : std_ulogic; -- memory cycle request
su : std_ulogic; -- supervisor address space
flush : std_ulogic; -- flush in progress
end record;
type memory_ic_out_type is record
data : std_logic_vector(31 downto 0); -- memory data
ready : std_ulogic; -- cycle ready
grant : std_ulogic; --
retry : std_ulogic; --
mexc : std_ulogic; -- memory exception
cache : std_ulogic; -- cacheable data
par : std_logic_vector(3 downto 0); -- parity
scanen : std_ulogic;
end record;
type memory_dc_in_type is record
address : std_logic_vector(31 downto 0);
data : std_logic_vector(31 downto 0);
asi : std_logic_vector(3 downto 0); -- ASI for load/store
size : std_logic_vector(1 downto 0);
burst : std_ulogic;
read : std_ulogic;
req : std_ulogic;
lock : std_ulogic;
cache : std_ulogic;
end record;
type memory_dc_out_type is record
data : std_logic_vector(31 downto 0); -- memory data
ready : std_ulogic; -- cycle ready
grant : std_ulogic;
retry : std_ulogic;
mexc : std_ulogic; -- memory exception
werr : std_ulogic; -- memory write error
cache : std_ulogic; -- cacheable data
ba : std_ulogic; -- bus active (used for snooping)
bg : std_ulogic; -- bus grant (used for snooping)
par : std_logic_vector(3 downto 0); -- parity
scanen : std_ulogic;
testen : std_ulogic;
end record;
constant dir : integer := 3;
constant rnd : integer := 2;
constant lrr : integer := 1;
constant lru : integer := 0;
type cache_replalgbits_type is array (0 to 3) of integer;
constant creplalg_tbl : cache_replalgbits_type := (0, 1, 0, 0);
type lru_bits_type is array(1 to 4) of integer;
constant lru_table : lru_bits_type := (1,1,3,5);
component acache
generic (
hindex : integer range 0 to NAHBMST-1 := 0;
ilinesize : integer range 4 to 8 := 4;
cached : integer := 0;
clk2x : integer := 0;
scantest : integer := 0);
port (
rst : in std_ulogic;
clk : in std_ulogic;
mcii : in memory_ic_in_type;
mcio : out memory_ic_out_type;
mcdi : in memory_dc_in_type;
mcdo : out memory_dc_out_type;
ahbi : in ahb_mst_in_type;
ahbo : out ahb_mst_out_type;
ahbso : in ahb_slv_out_vector;
hclken : in std_ulogic
);
end component;
component dcache
generic (
dsu : integer range 0 to 1 := 0;
dcen : integer range 0 to 1 := 0;
drepl : integer range 0 to 3 := 0;
dsets : integer range 1 to 4 := 1;
dlinesize : integer range 4 to 8 := 4;
dsetsize : integer range 1 to 256 := 1;
dsetlock : integer range 0 to 1 := 0;
dsnoop : integer range 0 to 6 := 0;
dlram : integer range 0 to 1 := 0;
dlramsize : integer range 1 to 512 := 1;
dlramstart : integer range 0 to 255 := 16#8f#;
ilram : integer range 0 to 1 := 0;
ilramstart : integer range 0 to 255 := 16#8e#;
memtech : integer range 0 to NTECH := 0;
cached : integer := 0);
port (
rst : in std_ulogic;
clk : in std_ulogic;
dci : in dcache_in_type;
dco : out dcache_out_type;
ico : in icache_out_type;
mcdi : out memory_dc_in_type;
mcdo : in memory_dc_out_type;
ahbsi : in ahb_slv_in_type;
dcrami : out dcram_in_type;
dcramo : in dcram_out_type;
fpuholdn : in std_ulogic;
sclk : in std_ulogic
);
end component;
component icache
generic (
icen : integer range 0 to 1 := 0;
irepl : integer range 0 to 3 := 0;
isets : integer range 1 to 4 := 1;
ilinesize : integer range 4 to 8 := 4;
isetsize : integer range 1 to 256 := 1;
isetlock : integer range 0 to 1 := 0;
lram : integer range 0 to 1 := 0;
lramsize : integer range 1 to 512 := 1;
lramstart : integer range 0 to 255 := 16#8e#);
port (
rst : in std_ulogic;
clk : in std_ulogic;
ici : in icache_in_type;
ico : out icache_out_type;
dci : in dcache_in_type;
dco : in dcache_out_type;
mcii : out memory_ic_in_type;
mcio : in memory_ic_out_type;
icrami : out icram_in_type;
icramo : in icram_out_type;
fpuholdn : in std_ulogic);
end component;
component cache
generic (
hindex : integer := 0;
dsu : integer range 0 to 1 := 0;
icen : integer range 0 to 1 := 0;
irepl : integer range 0 to 3 := 0;
isets : integer range 1 to 4 := 1;
ilinesize : integer range 4 to 8 := 4;
isetsize : integer range 1 to 256:= 1;
isetlock : integer range 0 to 1 := 0;
dcen : integer range 0 to 1 := 0;
drepl : integer range 0 to 3 := 0;
dsets : integer range 1 to 4 := 1;
dlinesize : integer range 4 to 8 := 4;
dsetsize : integer range 1 to 256:= 1;
dsetlock : integer range 0 to 1 := 0;
dsnoop : integer range 0 to 6 := 0;
ilram : integer range 0 to 1 := 0;
ilramsize : integer range 1 to 512 := 1;
ilramstart : integer range 0 to 255 := 16#8e#;
dlram : integer range 0 to 1 := 0;
dlramsize : integer range 1 to 512 := 1;
dlramstart : integer range 0 to 255 := 16#8f#;
cached : integer := 0;
clk2x : integer := 0;
memtech : integer range 0 to NTECH := 0;
scantest : integer := 0);
port (
rst : in std_ulogic;
clk : in std_ulogic;
ici : in icache_in_type;
ico : out icache_out_type;
dci : in dcache_in_type;
dco : out dcache_out_type;
ahbi : in ahb_mst_in_type;
ahbo : out ahb_mst_out_type;
ahbsi : in ahb_slv_in_type;
ahbso : in ahb_slv_out_vector;
crami : out cram_in_type;
cramo : in cram_out_type;
fpuholdn : in std_ulogic;
hclk, sclk : in std_ulogic;
hclken : in std_ulogic
);
end component;
component cachemem
generic (
tech : integer range 0 to NTECH := 0;
icen : integer range 0 to 1 := 0;
irepl : integer range 0 to 3 := 0;
isets : integer range 1 to 4 := 1;
ilinesize : integer range 4 to 8 := 4;
isetsize : integer range 1 to 256 := 1;
isetlock : integer range 0 to 1 := 0;
dcen : integer range 0 to 1 := 0;
drepl : integer range 0 to 3 := 0;
dsets : integer range 1 to 4 := 1;
dlinesize : integer range 4 to 8 := 4;
dsetsize : integer range 1 to 256 := 1;
dsetlock : integer range 0 to 1 := 0;
dsnoop : integer range 0 to 6 := 0;
ilram : integer range 0 to 1 := 0;
ilramsize : integer range 1 to 512 := 1;
dlram : integer range 0 to 1 := 0;
dlramsize : integer range 1 to 512 := 1;
mmuen : integer range 0 to 1 := 0;
testen : integer range 0 to 3 := 0
);
port (
clk : in std_ulogic;
crami : in cram_in_type;
cramo : out cram_out_type;
sclk : in std_ulogic
);
end component;
-- mmu versions
component mmu_acache
generic (
hindex : integer range 0 to NAHBMST-1 := 0;
ilinesize : integer range 4 to 8 := 4;
cached : integer := 0;
clk2x : integer := 0;
scantest : integer := 0);
port (
rst : in std_logic;
clk : in std_logic;
mcii : in memory_ic_in_type;
mcio : out memory_ic_out_type;
mcdi : in memory_dc_in_type;
mcdo : out memory_dc_out_type;
mcmmi : in memory_mm_in_type;
mcmmo : out memory_mm_out_type;
ahbi : in ahb_mst_in_type;
ahbo : out ahb_mst_out_type;
ahbso : in ahb_slv_out_vector;
hclken : in std_ulogic
);
end component;
component mmu_icache
generic (
icen : integer range 0 to 1 := 0;
irepl : integer range 0 to 3 := 0;
isets : integer range 1 to 4 := 1;
ilinesize : integer range 4 to 8 := 4;
isetsize : integer range 1 to 256 := 1;
isetlock : integer range 0 to 1 := 0;
lram : integer range 0 to 1 := 0;
lramsize : integer range 1 to 512 := 1;
lramstart : integer range 0 to 255 := 16#8e#;
mmuen : integer := 0
);
port (
rst : in std_logic;
clk : in std_logic;
ici : in icache_in_type;
ico : out icache_out_type;
dci : in dcache_in_type;
dco : in dcache_out_type;
mcii : out memory_ic_in_type;
mcio : in memory_ic_out_type;
icrami : out icram_in_type;
icramo : in icram_out_type;
fpuholdn : in std_logic;
mmudci : in mmudc_in_type;
mmuici : out mmuic_in_type;
mmuico : in mmuic_out_type
);
end component;
component mmu_dcache
generic (
dsu : integer range 0 to 1 := 0;
dcen : integer range 0 to 1 := 0;
drepl : integer range 0 to 3 := 0;
dsets : integer range 1 to 4 := 1;
dlinesize : integer range 4 to 8 := 4;
dsetsize : integer range 1 to 256 := 1;
dsetlock : integer range 0 to 1 := 0;
dsnoop : integer range 0 to 6 := 0;
dlram : integer range 0 to 1 := 0;
dlramsize : integer range 1 to 512 := 1;
dlramstart : integer range 0 to 255 := 16#8f#;
ilram : integer range 0 to 1 := 0;
ilramstart : integer range 0 to 255 := 16#8e#;
itlbnum : integer range 2 to 64 := 8;
dtlbnum : integer range 2 to 64 := 8;
tlb_type : integer range 0 to 3 := 1;
memtech : integer range 0 to NTECH := 0;
cached : integer := 0;
mmupgsz : integer range 0 to 5 := 0;
smp : integer := 0;
mmuen : integer := 0
);
port (
rst : in std_logic;
clk : in std_logic;
dci : in dcache_in_type;
dco : out dcache_out_type;
ico : in icache_out_type;
mcdi : out memory_dc_in_type;
mcdo : in memory_dc_out_type;
ahbsi : in ahb_slv_in_type;
dcrami : out dcram_in_type;
dcramo : in dcram_out_type;
fpuholdn : in std_logic;
mmudci : out mmudc_in_type;
mmudco : in mmudc_out_type;
sclk : in std_ulogic
);
end component;
component mmu_cache
generic (
hindex : integer := 0;
memtech : integer range 0 to NTECH := 0;
dsu : integer range 0 to 1 := 0;
icen : integer range 0 to 1 := 0;
irepl : integer range 0 to 3 := 0;
isets : integer range 1 to 4 := 1;
ilinesize : integer range 4 to 8 := 4;
isetsize : integer range 1 to 256 := 1;
isetlock : integer range 0 to 1 := 0;
dcen : integer range 0 to 1 := 0;
drepl : integer range 0 to 3 := 0;
dsets : integer range 1 to 4 := 1;
dlinesize : integer range 4 to 8 := 4;
dsetsize : integer range 1 to 256 := 1;
dsetlock : integer range 0 to 1 := 0;
dsnoop : integer range 0 to 6 := 0;
ilram : integer range 0 to 1 := 0;
ilramsize : integer range 1 to 512 := 1;
ilramstart : integer range 0 to 255 := 16#8e#;
dlram : integer range 0 to 1 := 0;
dlramsize : integer range 1 to 512 := 1;
dlramstart : integer range 0 to 255 := 16#8f#;
itlbnum : integer range 2 to 64 := 8;
dtlbnum : integer range 2 to 64 := 8;
tlb_type : integer range 0 to 3 := 1;
tlb_rep : integer range 0 to 1 := 0;
cached : integer := 0;
clk2x : integer := 0;
scantest : integer := 0;
mmupgsz : integer range 0 to 5 := 0;
smp : integer := 0;
mmuen : integer range 0 to 1 := 0
);
port (
rst : in std_ulogic;
clk : in std_ulogic;
ici : in icache_in_type;
ico : out icache_out_type;
dci : in dcache_in_type;
dco : out dcache_out_type;
ahbi : in ahb_mst_in_type;
ahbo : out ahb_mst_out_type;
ahbsi : in ahb_slv_in_type;
ahbso : in ahb_slv_out_vector;
crami : out cram_in_type;
cramo : in cram_out_type;
fpuholdn : in std_ulogic;
hclk, sclk : in std_ulogic;
hclken : in std_ulogic
);
end component;
component clk2xqual
port (
rst : in std_ulogic;
clk : in std_ulogic;
clk2 : in std_ulogic;
clken : out std_ulogic);
end component;
component clk2xsync
generic (hindex : integer := 0;
clk2x : integer := 1);
port (
rst : in std_ulogic;
hclk : in std_ulogic;
clk : in std_ulogic;
ahbi : in ahb_mst_in_type;
ahbi2 : out ahb_mst_in_type;
ahbo : in ahb_mst_out_type;
ahbo2 : out ahb_mst_out_type;
ahbsi : in ahb_slv_in_type;
ahbsi2 : out ahb_slv_in_type;
mcii : in memory_ic_in_type;
mcdi : in memory_dc_in_type;
mcdo : in memory_dc_out_type;
mmreq : in std_ulogic;
mmgrant: in std_ulogic;
hclken : in std_ulogic
);
end component;
function cache_cfg(repl, sets, linesize, setsize, lock, snoop,
lram, lramsize, lramstart, mmuen : integer) return std_logic_vector;
end;
package body libcache is
function cache_cfg(repl, sets, linesize, setsize, lock, snoop,
lram, lramsize, lramstart, mmuen : integer) return std_logic_vector is
variable cfg : std_logic_vector(31 downto 0);
begin
cfg := (others => '0');
cfg(31 downto 31) := conv_std_logic_vector(lock, 1);
cfg(30 downto 28) := conv_std_logic_vector(repl+1, 3);
if snoop /= 0 then cfg(27) := '1'; end if;
--cfg(27 downto 27) := conv_std_logic_vector(snoop, 1);
cfg(26 downto 24) := conv_std_logic_vector(sets-1, 3);
cfg(23 downto 20) := conv_std_logic_vector(log2(setsize), 4);
cfg(19 downto 19) := conv_std_logic_vector(lram, 1);
cfg(18 downto 16) := conv_std_logic_vector(log2(linesize), 3);
cfg(15 downto 12) := conv_std_logic_vector(log2(lramsize), 4);
cfg(11 downto 4) := conv_std_logic_vector(lramstart, 8);
cfg(3 downto 3) := conv_std_logic_vector(mmuen, 1);
return(cfg);
end;
end;