------------------------------------------------------------------------------ -- File name : s29al016j.vhd ------------------------------------------------------------------------------- -- Copyright (C) 2007-2010 Free Model Foundry; http://www.FreeModelFoundry.com -- -- This program is free software; you can redistribute it and/or modify -- it under the terms of the GNU General Public License version 2 as -- published by the Free Software Foundation. -- -- MODIFICATION HISTORY : -- -- version: | author: | mod date: | changes made: -- V1.0 I.Milutinovic 07 Mar 30 Initial version -- V1.1 S.Petrovic 10 Nov 05 First read after completion of -- embedded program/erase operation on -- programmed address/erased sector -- is status read -- ------------------------------------------------------------------------------- -- PART DESCRIPTION: -- -- Library: AMD -- Technology: Flash Memory -- Part: S29AL016J -- -- Description: 16 Megabit Floating Gate NOR Boot Sector Flash Memory -- Boot sector determined by TimingModel generic -- ------------------------------------------------------------------------------- -- Comments : -- When testing with NCSim 05.82-p002 default value for TimingModel in -- generic list should be removed, otherwise backannotation of this value -- will not be done properly ------------------------------------------------------------------------------- -- Known Bugs: -- ------------------------------------------------------------------------------- LIBRARY IEEE; USE IEEE.std_logic_1164.ALL; USE IEEE.VITAL_timing.ALL; USE IEEE.VITAL_primitives.ALL; USE STD.textio.ALL; LIBRARY FMF; USE FMF.gen_utils.all; USE FMF.conversions.all; ------------------------------------------------------------------------------- -- ENTITY DECLARATION ------------------------------------------------------------------------------- ENTITY s29al016j IS GENERIC ( -- tipd delays: interconnect path delays tipd_A0 : VitalDelayType01 := VitalZeroDelay01; -- tipd_A1 : VitalDelayType01 := VitalZeroDelay01; -- tipd_A2 : VitalDelayType01 := VitalZeroDelay01; -- tipd_A3 : VitalDelayType01 := VitalZeroDelay01; -- tipd_A4 : VitalDelayType01 := VitalZeroDelay01; -- tipd_A5 : VitalDelayType01 := VitalZeroDelay01; -- tipd_A6 : VitalDelayType01 := VitalZeroDelay01; -- tipd_A7 : VitalDelayType01 := VitalZeroDelay01; -- tipd_A8 : VitalDelayType01 := VitalZeroDelay01; -- tipd_A9 : VitalDelayType01 := VitalZeroDelay01; --address tipd_A10 : VitalDelayType01 := VitalZeroDelay01; --lines tipd_A11 : VitalDelayType01 := VitalZeroDelay01; -- tipd_A12 : VitalDelayType01 := VitalZeroDelay01; -- tipd_A13 : VitalDelayType01 := VitalZeroDelay01; -- tipd_A14 : VitalDelayType01 := VitalZeroDelay01; -- tipd_A15 : VitalDelayType01 := VitalZeroDelay01; -- tipd_A16 : VitalDelayType01 := VitalZeroDelay01; -- tipd_A17 : VitalDelayType01 := VitalZeroDelay01; -- tipd_A18 : VitalDelayType01 := VitalZeroDelay01; -- tipd_A19 : VitalDelayType01 := VitalZeroDelay01; -- tipd_DQ0 : VitalDelayType01 := VitalZeroDelay01; -- tipd_DQ1 : VitalDelayType01 := VitalZeroDelay01; -- tipd_DQ2 : VitalDelayType01 := VitalZeroDelay01; -- tipd_DQ3 : VitalDelayType01 := VitalZeroDelay01; -- tipd_DQ4 : VitalDelayType01 := VitalZeroDelay01; -- tipd_DQ5 : VitalDelayType01 := VitalZeroDelay01; -- tipd_DQ6 : VitalDelayType01 := VitalZeroDelay01; -- data tipd_DQ7 : VitalDelayType01 := VitalZeroDelay01; -- lines tipd_DQ8 : VitalDelayType01 := VitalZeroDelay01; -- tipd_DQ9 : VitalDelayType01 := VitalZeroDelay01; -- tipd_DQ10 : VitalDelayType01 := VitalZeroDelay01; -- tipd_DQ11 : VitalDelayType01 := VitalZeroDelay01; -- tipd_DQ12 : VitalDelayType01 := VitalZeroDelay01; -- tipd_DQ13 : VitalDelayType01 := VitalZeroDelay01; -- tipd_DQ14 : VitalDelayType01 := VitalZeroDelay01; -- tipd_DQ15 : VitalDelayType01 := VitalZeroDelay01; -- DQ15/A-1 tipd_CENeg : VitalDelayType01 := VitalZeroDelay01; tipd_OENeg : VitalDelayType01 := VitalZeroDelay01; tipd_WENeg : VitalDelayType01 := VitalZeroDelay01; tipd_WPNeg : VitalDelayType01 := VitalZeroDelay01; tipd_RESETNeg : VitalDelayType01 := VitalZeroDelay01; tipd_BYTENeg : VitalDelayType01 := VitalZeroDelay01; -- tpd delays tpd_A0_DQ0 : VitalDelayType01 := UnitDelay01;--tACC tpd_CENeg_DQ0 : VitalDelayType01Z := UnitDelay01Z; --(tCE,tCE,tDF,-,tDF,-) tpd_OENeg_DQ0 : VitalDelayType01Z := UnitDelay01Z; --(tOE,tOE,tDF,-,tDF,-) tpd_BYTENeg_DQ15 : VitalDelayType01Z := UnitDelay01Z; -- (tFHQV, tFHQV, tFLQZ, tFHQV, tFLQZ, tFHQV) tpd_RESETNeg_DQ0 : VitalDelayType01Z := UnitDelay01Z; tpd_WENeg_RY : VitalDelayType01 := UnitDelay01;--tBUSY --tsetup values tsetup_A0_CENeg : VitalDelayType := UnitDelay; --tAS edge \ tsetup_DQ0_CENeg : VitalDelayType := UnitDelay; --tDS edge / tsetup_CENeg_WENeg : VitalDelayType := UnitDelay; -- tCS / --thold values thold_A0_CENeg : VitalDelayType := UnitDelay; --tAH edge \ thold_DQ0_CENeg : VitalDelayType := UnitDelay; --tDH edge / thold_OENeg_WENeg : VitalDelayType := UnitDelay; --tOEH,edge / thold_CENeg_WENeg : VitalDelayType := UnitDelay; --tCH edge / thold_CENeg_RESETNeg: VitalDelayType := UnitDelay; --tRH edge / thold_BYTENeg_CENeg : VitalDelayType := UnitDelay; --tELFH, tEHFL \ thold_WENeg_OENeg : VitalDelayType := UnitDelay; --tGHWL edge / --tpw values: pulse width tpw_RESETNeg_negedge: VitalDelayType := UnitDelay; --tRP -- tpw_WENeg_negedge : VitalDelayType := UnitDelay; --tWP -- tpw_WENeg_posedge : VitalDelayType := UnitDelay; --tWPH -- tpw_A0_negedge : VitalDelayType := UnitDelay; --tWC tRC -- tdevice values: values for internal delays --Program Operation --byte write tdevice_POB : VitalDelayType := 4 us; --word write tdevice_POW : VitalDelayType := 5 us; --Sector Erase Operation tWHWH2 tdevice_SEO : VitalDelayType := 400 ms; --erase suspend timeout tdevice_START_T1 : VitalDelayType := 20 us; --sector erase command sequence timeout tdevice_CTMOUT : VitalDelayType := 50 us; --device ready after Hardware reset(during embeded algorithm) tdevice_READY : VitalDelayType := 20 us; --tReady -- generic control parameters InstancePath : STRING := DefaultInstancePath; TimingChecksOn : BOOLEAN := DefaultTimingChecks; MsgOn : BOOLEAN := DefaultMsgOn; XOn : BOOLEAN := DefaultXon; -- memory file to be loaded mem_file_name : STRING := "none";--"s29al016j.mem"; prot_file_name : STRING := "none";--"s29al016j_prot.mem"; secsi_file_name : STRING := "none";--"s29al_secsi.mem"; UserPreload : BOOLEAN := FALSE; LongTimming : BOOLEAN := TRUE; -- For FMF SDF technology file usage TimingModel : STRING -- := DefaultTimingModel ); PORT ( A19 : IN std_ulogic := 'U'; -- A18 : IN std_ulogic := 'U'; -- A17 : IN std_ulogic := 'U'; -- A16 : IN std_ulogic := 'U'; -- A15 : IN std_ulogic := 'U'; -- A14 : IN std_ulogic := 'U'; -- A13 : IN std_ulogic := 'U'; --address A12 : IN std_ulogic := 'U'; --lines A11 : IN std_ulogic := 'U'; -- A10 : IN std_ulogic := 'U'; -- A9 : IN std_ulogic := 'U'; -- A8 : IN std_ulogic := 'U'; -- A7 : IN std_ulogic := 'U'; -- A6 : IN std_ulogic := 'U'; -- A5 : IN std_ulogic := 'U'; -- A4 : IN std_ulogic := 'U'; -- A3 : IN std_ulogic := 'U'; -- A2 : IN std_ulogic := 'U'; -- A1 : IN std_ulogic := 'U'; -- A0 : IN std_ulogic := 'U'; -- DQ15 : INOUT std_ulogic := 'U'; -- DQ15/A-1 DQ14 : INOUT std_ulogic := 'U'; -- DQ13 : INOUT std_ulogic := 'U'; -- DQ12 : INOUT std_ulogic := 'U'; -- DQ11 : INOUT std_ulogic := 'U'; -- DQ10 : INOUT std_ulogic := 'U'; -- DQ9 : INOUT std_ulogic := 'U'; -- data DQ8 : INOUT std_ulogic := 'U'; -- lines DQ7 : INOUT std_ulogic := 'U'; -- DQ6 : INOUT std_ulogic := 'U'; -- DQ5 : INOUT std_ulogic := 'U'; -- DQ4 : INOUT std_ulogic := 'U'; -- DQ3 : INOUT std_ulogic := 'U'; -- DQ2 : INOUT std_ulogic := 'U'; -- DQ1 : INOUT std_ulogic := 'U'; -- DQ0 : INOUT std_ulogic := 'U'; -- CENeg : IN std_ulogic := 'U'; OENeg : IN std_ulogic := 'U'; WENeg : IN std_ulogic := 'U'; RESETNeg : IN std_ulogic := 'U'; BYTENeg : IN std_ulogic := 'U'; WPNeg : IN std_ulogic := 'U'; RY : OUT std_ulogic := 'U' --RY/BY# ); ATTRIBUTE VITAL_LEVEL0 of s29al016j : ENTITY IS TRUE; END s29al016j; ------------------------------------------------------------------------------- -- ARCHITECTURE DECLARATION ------------------------------------------------------------------------------- ARCHITECTURE vhdl_behavioral of s29al016j IS ATTRIBUTE VITAL_LEVEL0 of vhdl_behavioral : ARCHITECTURE IS TRUE; CONSTANT PartID : STRING := "s29al016j"; CONSTANT MaxData : NATURAL := 16#FF#; --255; CONSTANT SecSize : NATURAL := 16#FFFF#; --65535 CONSTANT SecSiSize : NATURAL := 16#FF#; --255 CONSTANT MemSize : NATURAL := 16#1FFFFF#; CONSTANT SecNum : NATURAL := 31; CONSTANT SubSecNum : NATURAL := 3; CONSTANT HiAddrBit : NATURAL := 19; -- interconnect path delay signals SIGNAL A19_ipd : std_ulogic := 'U'; SIGNAL A18_ipd : std_ulogic := 'U'; SIGNAL A17_ipd : std_ulogic := 'U'; SIGNAL A16_ipd : std_ulogic := 'U'; SIGNAL A15_ipd : std_ulogic := 'U'; SIGNAL A14_ipd : std_ulogic := 'U'; SIGNAL A13_ipd : std_ulogic := 'U'; SIGNAL A12_ipd : std_ulogic := 'U'; SIGNAL A11_ipd : std_ulogic := 'U'; SIGNAL A10_ipd : std_ulogic := 'U'; SIGNAL A9_ipd : std_ulogic := 'U'; SIGNAL A8_ipd : std_ulogic := 'U'; SIGNAL A7_ipd : std_ulogic := 'U'; SIGNAL A6_ipd : std_ulogic := 'U'; SIGNAL A5_ipd : std_ulogic := 'U'; SIGNAL A4_ipd : std_ulogic := 'U'; SIGNAL A3_ipd : std_ulogic := 'U'; SIGNAL A2_ipd : std_ulogic := 'U'; SIGNAL A1_ipd : std_ulogic := 'U'; SIGNAL A0_ipd : std_ulogic := 'U'; SIGNAL DQ15_ipd : std_ulogic := 'U'; SIGNAL DQ14_ipd : std_ulogic := 'U'; SIGNAL DQ13_ipd : std_ulogic := 'U'; SIGNAL DQ12_ipd : std_ulogic := 'U'; SIGNAL DQ11_ipd : std_ulogic := 'U'; SIGNAL DQ10_ipd : std_ulogic := 'U'; SIGNAL DQ9_ipd : std_ulogic := 'U'; SIGNAL DQ8_ipd : std_ulogic := 'U'; SIGNAL DQ7_ipd : std_ulogic := 'U'; SIGNAL DQ6_ipd : std_ulogic := 'U'; SIGNAL DQ5_ipd : std_ulogic := 'U'; SIGNAL DQ4_ipd : std_ulogic := 'U'; SIGNAL DQ3_ipd : std_ulogic := 'U'; SIGNAL DQ2_ipd : std_ulogic := 'U'; SIGNAL DQ1_ipd : std_ulogic := 'U'; SIGNAL DQ0_ipd : std_ulogic := 'U'; SIGNAL CENeg_ipd : std_ulogic := 'U'; SIGNAL OENeg_ipd : std_ulogic := 'U'; SIGNAL WENeg_ipd : std_ulogic := 'U'; SIGNAL WPNeg_ipd : std_ulogic := 'U'; SIGNAL RESETNeg_ipd : std_ulogic := 'U'; SIGNAL BYTENeg_ipd : std_ulogic := 'U'; --- internal delays SIGNAL POB_in : std_ulogic := '0'; SIGNAL POB_out : std_ulogic := '0'; SIGNAL POW_in : std_ulogic := '0'; SIGNAL POW_out : std_ulogic := '0'; SIGNAL SEO_in : std_ulogic := '0'; SIGNAL SEO_out : std_ulogic := '0'; SIGNAL START_T1_out : std_ulogic := '0'; --Start TimeOut; SUSPEND SIGNAL START_T1_in : std_ulogic := '0'; SIGNAL CTMOUT_out : std_ulogic := '0'; --Sector Erase TimeOut SIGNAL CTMOUT_in : std_ulogic := '0'; SIGNAL READY_in : std_ulogic := '0'; SIGNAL READY_out : std_ulogic := '0'; -- Device ready after reset BEGIN --------------------------------------------------------------------------- -- Internal Delays --------------------------------------------------------------------------- -- Artificial VITAL primitives to incorporate internal delays POB :VitalBuf(POB_out, POB_in, (tdevice_POB ,UnitDelay)); POW :VitalBuf(POW_out, POW_in, (tdevice_POW ,UnitDelay)); SEO :VitalBuf(SEO_out, SEO_in, (tdevice_SEO ,UnitDelay)); START_T1 :VitalBuf(START_T1_out,START_T1_in,(tdevice_START_T1,UnitDelay)); CTMOUT :VitalBuf(CTMOUT_out, CTMOUT_in, (tdevice_CTMOUT-5 ns, UnitDelay)); READY :VitalBuf(READY_out, READY_in, (tdevice_READY ,UnitDelay)); --------------------------------------------------------------------------- -- Wire Delays --------------------------------------------------------------------------- WireDelay : BLOCK BEGIN w_0 : VitalWireDelay (A19_ipd, A19, tipd_A19); w_1 : VitalWireDelay (A18_ipd, A18, tipd_A18); w_2 : VitalWireDelay (A17_ipd, A17, tipd_A17); w_3 : VitalWireDelay (A16_ipd, A16, tipd_A16); w_4 : VitalWireDelay (A15_ipd, A15, tipd_A15); w_5 : VitalWireDelay (A14_ipd, A14, tipd_A14); w_6 : VitalWireDelay (A13_ipd, A13, tipd_A13); w_7 : VitalWireDelay (A12_ipd, A12, tipd_A12); w_8 : VitalWireDelay (A11_ipd, A11, tipd_A11); w_9 : VitalWireDelay (A10_ipd, A10, tipd_A10); w_10 : VitalWireDelay (A9_ipd, A9, tipd_A9); w_11 : VitalWireDelay (A8_ipd, A8, tipd_A8); w_12 : VitalWireDelay (A7_ipd, A7, tipd_A7); w_13 : VitalWireDelay (A6_ipd, A6, tipd_A6); w_14 : VitalWireDelay (A5_ipd, A5, tipd_A5); w_15 : VitalWireDelay (A4_ipd, A4, tipd_A4); w_16 : VitalWireDelay (A3_ipd, A3, tipd_A3); w_17 : VitalWireDelay (A2_ipd, A2, tipd_A2); w_18 : VitalWireDelay (A1_ipd, A1, tipd_A1); w_19 : VitalWireDelay (A0_ipd, A0, tipd_A0); w_20 : VitalWireDelay (DQ15_ipd, DQ15, tipd_DQ15); w_21 : VitalWireDelay (DQ14_ipd, DQ14, tipd_DQ14); w_22 : VitalWireDelay (DQ13_ipd, DQ13, tipd_DQ13); w_23 : VitalWireDelay (DQ12_ipd, DQ12, tipd_DQ12); w_24 : VitalWireDelay (DQ11_ipd, DQ11, tipd_DQ11); w_25 : VitalWireDelay (DQ10_ipd, DQ10, tipd_DQ10); w_26 : VitalWireDelay (DQ9_ipd, DQ9, tipd_DQ9); w_27 : VitalWireDelay (DQ8_ipd, DQ8, tipd_DQ8); w_28 : VitalWireDelay (DQ7_ipd, DQ7, tipd_DQ7); w_29 : VitalWireDelay (DQ6_ipd, DQ6, tipd_DQ6); w_30 : VitalWireDelay (DQ5_ipd, DQ5, tipd_DQ5); w_31 : VitalWireDelay (DQ4_ipd, DQ4, tipd_DQ4); w_32 : VitalWireDelay (DQ3_ipd, DQ3, tipd_DQ3); w_33 : VitalWireDelay (DQ2_ipd, DQ2, tipd_DQ2); w_34 : VitalWireDelay (DQ1_ipd, DQ1, tipd_DQ1); w_35 : VitalWireDelay (DQ0_ipd, DQ0, tipd_DQ0); w_36 : VitalWireDelay (OENeg_ipd, OENeg, tipd_OENeg); w_37 : VitalWireDelay (WENeg_ipd, WENeg, tipd_WENeg); w_38 : VitalWireDelay (RESETNeg_ipd, RESETNeg, tipd_RESETNeg); w_39 : VitalWireDelay (CENeg_ipd, CENeg, tipd_CENeg); w_40 : VitalWireDelay (BYTENeg_ipd, BYTENeg, tipd_BYTENeg); w_41 : VitalWireDelay (WPNeg_ipd, WPNeg, tipd_WPNeg); END BLOCK; --------------------------------------------------------------------------- -- Main Behavior Block --------------------------------------------------------------------------- Behavior: BLOCK PORT ( A : IN std_logic_vector(HiAddrBit downto 0) := (OTHERS => 'U'); DIn : IN std_logic_vector(15 downto 0) := (OTHERS => 'U'); DOut : OUT std_ulogic_vector(15 downto 0) := (OTHERS => 'Z'); CENeg : IN std_ulogic := 'U'; OENeg : IN std_ulogic := 'U'; WENeg : IN std_ulogic := 'U'; WPNeg : IN std_ulogic := 'U'; RESETNeg : IN std_ulogic := 'U'; BYTENeg : IN std_ulogic := 'U'; RY : OUT std_ulogic := 'U' ); PORT MAP ( A(19) => A19_ipd, A(18) => A18_ipd, A(17) => A17_ipd, A(16) => A16_ipd, A(15) => A15_ipd, A(14) => A14_ipd, A(13) => A13_ipd, A(12) => A12_ipd, A(11) => A11_ipd, A(10) => A10_ipd, A(9) => A9_ipd, A(8) => A8_ipd, A(7) => A7_ipd, A(6) => A6_ipd, A(5) => A5_ipd, A(4) => A4_ipd, A(3) => A3_ipd, A(2) => A2_ipd, A(1) => A1_ipd, A(0) => A0_ipd, DIn(15) => DQ15_ipd, DIn(14) => DQ14_ipd, DIn(13) => DQ13_ipd, DIn(12) => DQ12_ipd, DIn(11) => DQ11_ipd, DIn(10) => DQ10_ipd, DIn(9) => DQ9_ipd, DIn(8) => DQ8_ipd, DIn(7) => DQ7_ipd, DIn(6) => DQ6_ipd, DIn(5) => DQ5_ipd, DIn(4) => DQ4_ipd, DIn(3) => DQ3_ipd, DIn(2) => DQ2_ipd, DIn(1) => DQ1_ipd, DIn(0) => DQ0_ipd, DOut(15) => DQ15, DOut(14) => DQ14, DOut(13) => DQ13, DOut(12) => DQ12, DOut(11) => DQ11, DOut(10) => DQ10, DOut(9) => DQ9, DOut(8) => DQ8, DOut(7) => DQ7, DOut(6) => DQ6, DOut(5) => DQ5, DOut(4) => DQ4, DOut(3) => DQ3, DOut(2) => DQ2, DOut(1) => DQ1, DOut(0) => DQ0, CENeg => CENeg_ipd, OENeg => OENeg_ipd, WENeg => WENeg_ipd, RESETNeg => RESETNeg_ipd, BYTENeg => BYTENeg_ipd, WPNeg => WPNeg_ipd, RY => RY ); -- State Machine : State_Type TYPE state_type IS ( RESET, Z001, PREL_SETBWB, PREL_ULBYPASS, PREL_ULBYPASS_Z001, CFI, AS, A0SEEN, OTP, OTP_Z001, OTP_PREL, OTP_AS, OTP_A0SEEN, C8, C8_Z001, C8_PREL, ERS, SERS, ESPS, SERS_EXEC, ESP, ESP_Z001, ESP_PREL, ESP_CFI, ESP_A0SEEN, ESP_AS, PGMS ); --Array of Sub sector start-end address within sector TYPE SubSecSEAddr IS ARRAY (0 TO SubSecNum) OF NATURAL; --Addresses of all Sectors devided to sub sectors TYPE SubSecAddr IS ARRAY (0 TO 1) OF SubSecSEAddr; --Flash Memory Array TYPE SecType IS ARRAY (0 TO SecSize) OF INTEGER RANGE -1 TO MaxData; TYPE MemArray IS ARRAY (0 TO SecNum) OF SecType; --SecSi Sector TYPE SecSiType IS ARRAY (0 TO SecSiSize) OF INTEGER RANGE -1 TO MaxData; -- states SIGNAL current_state : state_type; -- SIGNAL next_state : state_type; -- SIGNAL prev_state : state_type; -- powerup SIGNAL PoweredUp : std_logic := '0'; --zero delay signals SIGNAL DOut_zd : std_logic_vector(15 downto 0):=(OTHERS=>'Z'); SIGNAL DOut_Pass : std_logic_vector(15 downto 0):=(OTHERS=>'Z'); SIGNAL RY_zd : std_logic := 'Z'; --FSM control signals SIGNAL ULBYPASS : std_logic := '0'; --Unlock Bypass Active SIGNAL ESP_ACT : std_logic := '0'; --Erase Suspend SIGNAL OTP_ACT : std_logic := '0'; --SecSi access SIGNAL PDONE : std_logic := '1'; --Prog. Done SIGNAL PSTART : std_logic := '0'; --Start Programming --Program location is in protected sector SIGNAL PERR : std_logic := '0'; SIGNAL EDONE : std_logic := '1'; --Ers. Done SIGNAL ESTART : std_logic := '0'; --Start Erase SIGNAL ESUSP : std_logic := '0'; --Suspend Erase SIGNAL ERES : std_logic := '0'; --Resume Erase --All sectors selected for erasure are protected SIGNAL EERR : std_logic := '0'; --Sectors selected for erasure SIGNAL ERS_QUEUE : std_logic_vector(SecNum downto 0) := (OTHERS => '0'); SIGNAL ERS_SUB_QUEUE : std_logic_vector(SubSecNum downto 0) := (OTHERS => '0'); --Command Register SIGNAL write : std_logic := '0'; SIGNAL read : std_logic := '0'; --Sector Address SIGNAL SecAddr : NATURAL RANGE 0 TO SecNum := 0; SIGNAL SubSect : NATURAL RANGE 0 TO SubSecNum := 0; SIGNAL SA : NATURAL RANGE 0 TO SecNum := 0; SIGNAL SSA : NATURAL RANGE 0 TO SubSecNum := 0; --Address within sector SIGNAL Address : NATURAL RANGE 0 TO SecSize := 0; SIGNAL D_tmp0 : NATURAL RANGE 0 TO MaxData; SIGNAL D_tmp1 : NATURAL RANGE 0 TO MaxData; --A19:A11 Don't Care SIGNAL Addr : NATURAL RANGE 0 TO 16#7FF# := 0; --glitch protection SIGNAL gWE_n : std_logic; SIGNAL gCE_n : std_logic; SIGNAL gOE_n : std_logic; SIGNAL RST : std_logic := '1'; SIGNAL reseted : std_logic := '0'; -- Mem(SecAddr)(Address).... SHARED VARIABLE Mem : MemArray := (OTHERS =>(OTHERS=> MaxData)); SHARED VARIABLE Sec_Prot : std_logic_vector(SecNum downto 0) := (OTHERS => '0'); SHARED VARIABLE SubSec_Prot : std_logic_vector(SubSecNum downto 0) := (OTHERS => '0'); SHARED VARIABLE SecSi : SecSiType := (OTHERS => 0); SHARED VARIABLE OTP_Err : BOOLEAN := FALSE; SHARED VARIABLE sssa : SubSecAddr := ((16#0000#, 16#4000#, 16#6000#, 16#8000#), (16#0000#, 16#8000#, 16#A000#, 16#C000#)); SHARED VARIABLE ssea : SubSecAddr:= ((16#3FFF#, 16#5FFF#, 16#7FFF#, 16#FFFF#), (16#7FFF#, 16#9FFF#, 16#BFFF#, 16#FFFF#)); --SecSi Protection Status SIGNAL FactoryProt : std_logic := '1'; -- timing check violation SIGNAL Viol : X01 := '0'; --Address of variable size sector (bottom or top boot sector) SIGNAL VarSect : INTEGER := -1; SIGNAL vs : INTEGER; SHARED VARIABLE WrongSecSiAddrNeg : BOOLEAN ; -- Access time variables SHARED VARIABLE OPENLATCH : BOOLEAN; SHARED VARIABLE FROMCE : BOOLEAN; SHARED VARIABLE FROMOE : BOOLEAN; PROCEDURE RestoreSectAddr ( VARIABLE A : IN NATURAL RANGE 0 TO MemSize; VARIABLE SecAddr : INOUT NATURAL RANGE 0 TO SecNum; VARIABLE A_tmp : INOUT NATURAL RANGE 0 TO SecSize ) IS VARIABLE SA_tmp : NATURAL RANGE 0 TO SecNum; BEGIN FOR i IN 0 TO SecNum LOOP IF A >= i*(SecSize+1) AND A <= i*(SecSize+1) + SecSize THEN SecAddr := i; A_tmp := A - i*(SecSize + 1); END IF; END LOOP; END RestoreSectAddr; PROCEDURE SecSiRead ( SIGNAL SecAddr : IN NATURAL RANGE 0 TO SecNum; SIGNAL Address : IN NATURAL RANGE 0 TO SecSize; SIGNAL BYTENeg : IN std_ulogic; SIGNAL DOut_zd : INOUT std_logic_vector(15 downto 0) ) IS VARIABLE SecSiAddr : NATURAL RANGE 0 TO SecSiSize; BEGIN WrongSecSiAddrNeg := TRUE; IF ((vs = 1) AND ( SecAddr = VarSect ) AND (Address >= 16#FF00#) AND (Address <= 16#FFFF#)) OR ((vs = 0) AND ( SecAddr = VarSect ) AND (Address >= 0) AND (Address <= 16#FF#)) THEN SecSiAddr := Address MOD (SecSiSize + 1); IF SecSi(SecSiAddr) = -1 THEN DOut_zd(7 downto 0) <= (OTHERS => 'X'); ELSE DOut_zd(7 downto 0) <= to_slv(SecSi(SecSiAddr),8); END IF; IF BYTENeg = '1' THEN IF SecSi(SecSiAddr + 1) = -1 THEN DOut_zd(15 downto 8) <= (OTHERS => 'X'); ELSE DOut_zd(15 downto 8) <= to_slv(SecSi(SecSiAddr + 1),8); END IF; END IF; ELSE WrongSecSiAddrNeg := FALSE; END IF; ASSERT WrongSecSiAddrNeg REPORT "Secure Sillicon Address out of range =" & to_int_str(Address) SEVERITY warning; END SecSiRead; PROCEDURE AsRead ( SIGNAL Address : IN NATURAL RANGE 0 TO SecSize; SIGNAL BYTENeg : IN std_ulogic; SIGNAL vs : IN INTEGER; SIGNAL SecAddr : IN NATURAL RANGE 0 TO SecNum; SIGNAL DOut_zd : INOUT std_logic_vector(15 downto 0) ) IS BEGIN IF BYTENeg = '1' THEN IF Address = 0 THEN DOut_zd(15 downto 8)<=to_slv(0,8); ELSE DOut_zd(15 downto 8)<=to_slv(16#22#,8); END IF; ELSE DOut_zd(15 downto 8) <= "ZZZZZZZZ"; END IF; IF Addr = 0 THEN DOut_zd(7 downto 0) <= to_slv(1,8); ELSIF Addr = 1 THEN IF vs = 1 THEN DOut_zd(7 downto 0) <= to_slv(16#C4#,8); ELSE DOut_zd(7 downto 0) <= to_slv(16#49#,8); END IF; ELSIF Addr = 2 THEN DOut_zd(7 downto 1) <= to_slv(0,7); IF (SecAddr = VarSect) THEN DOut_zd(0) <= SubSec_Prot(SubSect); ELSE DOut_zd(0) <= Sec_Prot(SecAddr); END IF; ELSIF Addr = 3 THEN IF VarSect > 0 THEN DOut_zd(7 downto 0) <= to_slv(16#0E#,8); IF FactoryProt = '1' THEN DOut_zd(7) <= '1'; END IF; ELSE DOut_zd(7 downto 0) <= to_slv(16#16#,8); IF FactoryProt = '1' THEN DOut_zd(7) <= '1'; END IF; END IF; END IF; END AsRead; PROCEDURE MemRead ( SIGNAL SecAddr : IN NATURAL RANGE 0 TO SecNum; SIGNAL Address : IN NATURAL RANGE 0 TO SecSize; SIGNAL BYTENeg : IN std_ulogic; SIGNAL DOut_zd : INOUT std_logic_vector(15 downto 0) ) IS BEGIN IF Mem(SecAddr)(Address) = -1 THEN DOut_zd(7 downto 0) <= (OTHERS => 'X'); ELSE DOut_zd(7 downto 0) <= to_slv(Mem(SecAddr)(Address),8); END IF; IF BYTENeg = '1' THEN IF Mem(SecAddr)(Address+1) = -1 THEN DOut_zd(15 downto 8) <= (OTHERS => 'X'); ELSE DOut_zd(15 downto 8) <= to_slv(Mem(SecAddr)(Address+1),8); END IF; END IF; END MemRead; BEGIN --------------------------------------------------------------------------- --VarSect --------------------------------------------------------------------------- VarSect <= SecNum WHEN TimingModel(10)='T' ELSE 0; vs <= 1 WHEN TimingModel(10)='T' ELSE 0; ---------------------------------------------------------------------------- --Power Up time 100 ns; --------------------------------------------------------------------------- PoweredUp <= '1' AFTER 100 ns; RST <= RESETNeg AFTER 500 ns; --------------------------------------------------------------------------- -- VITAL Timing Checks Procedures --------------------------------------------------------------------------- VITALTimingCheck: PROCESS(A, Din, CENeg, OENeg, WENeg, RESETNeg) -- Timing Check Variables VARIABLE Tviol_A0_CENeg : X01 := '0'; VARIABLE TD_A0_CENeg : VitalTimingDataType; VARIABLE Tviol_A0_WENeg : X01 := '0'; VARIABLE TD_A0_WENeg : VitalTimingDataType; VARIABLE Tviol_BYTENeg_WENeg : X01 := '0'; VARIABLE TD_BYTENeg_WENeg : VitalTimingDataType; VARIABLE Tviol_DQ0_CENeg : X01 := '0'; VARIABLE TD_DQ0_CENeg : VitalTimingDataType; VARIABLE Tviol_DQ0_WENeg : X01 := '0'; VARIABLE TD_DQ0_WENeg : VitalTimingDataType; VARIABLE Tviol_CENeg_RESETNeg : X01 := '0'; VARIABLE TD_CENeg_RESETNeg : VitalTimingDataType; VARIABLE Tviol_OENeg_RESETNeg : X01 := '0'; VARIABLE TD_OENeg_RESETNeg : VitalTimingDataType; VARIABLE Tviol_WENeg_RESETNeg : X01 := '0'; VARIABLE TD_WENeg_RESETNeg : VitalTimingDataType; VARIABLE Tviol_CENeg_WENeg_F : X01 := '0'; VARIABLE TD_CENeg_WENeg_F : VitalTimingDataType; VARIABLE Tviol_WENeg_OENeg_R : X01 := '0'; VARIABLE TD_WENeg_OENeg_R : VitalTimingDataType; VARIABLE Tviol_OENeg_WENeg_R : X01 := '0'; VARIABLE TD_OENeg_WENeg_R : VitalTimingDataType; VARIABLE Tviol_WENeg_CENeg_F : X01 := '0'; VARIABLE TD_WENeg_CENeg_F : VitalTimingDataType; VARIABLE Tviol_WENeg_CENeg_R : X01 := '0'; VARIABLE TD_WENeg_CENeg_R : VitalTimingDataType; VARIABLE Tviol_CENeg_WENeg : X01 := '0'; VARIABLE TD_CENeg_WENeg : VitalTimingDataType; VARIABLE Tviol_BYTENeg_CENeg : X01 := '0'; VARIABLE TD_BYTENeg_CENeg : VitalTimingDataType; VARIABLE Pviol_RESETNeg : X01 := '0'; VARIABLE PD_RESETNeg : VitalPeriodDataType := VitalPeriodDataInit; VARIABLE Pviol_CENeg : X01 := '0'; VARIABLE PD_CENeg : VitalPeriodDataType := VitalPeriodDataInit; VARIABLE Pviol_WENeg : X01 := '0'; VARIABLE PD_WENeg : VitalPeriodDataType := VitalPeriodDataInit; VARIABLE Pviol_A0 : X01 := '0'; VARIABLE PD_A0 : VitalPeriodDataType := VitalPeriodDataInit; VARIABLE Violation : X01 := '0'; BEGIN --------------------------------------------------------------------------- -- Timing Check Section --------------------------------------------------------------------------- IF (TimingChecksOn) THEN -- Setup/Hold Check between A and CENeg VitalSetupHoldCheck ( TestSignal => A, TestSignalName => "A", RefSignal => CENeg, RefSignalName => "CE#", SetupHigh => tsetup_A0_CENeg, SetupLow => tsetup_A0_CENeg, HoldHigh => thold_A0_CENeg, HoldLow => thold_A0_CENeg, CheckEnabled => TRUE, RefTransition => '\', HeaderMsg => InstancePath & PartID, TimingData => TD_A0_CENeg, Violation => Tviol_A0_CENeg ); -- Setup/Hold Check between A and WENeg VitalSetupHoldCheck ( TestSignal => A, TestSignalName => "A", RefSignal => WENeg, RefSignalName => "WE#", SetupHigh => tsetup_A0_CENeg, SetupLow => tsetup_A0_CENeg, HoldHigh => thold_A0_CENeg, HoldLow => thold_A0_CENeg, CheckEnabled => TRUE, RefTransition => '\', HeaderMsg => InstancePath & PartID, TimingData => TD_A0_WENeg, Violation => Tviol_A0_WENeg ); -- Setup/Hold Check between DQ and CENeg VitalSetupHoldCheck ( TestSignal => DQ0, TestSignalName => "DQ", RefSignal => CENeg, RefSignalName => "CE#", SetupHigh => tsetup_DQ0_CENeg, SetupLow => tsetup_DQ0_CENeg, HoldHigh => thold_DQ0_CENeg, HoldLow => thold_DQ0_CENeg, CheckEnabled => TRUE, RefTransition => '/', HeaderMsg => InstancePath & PartID, TimingData => TD_DQ0_CENeg, Violation => Tviol_DQ0_CENeg ); -- Setup/Hold Check between DQ and WENeg VitalSetupHoldCheck ( TestSignal => DQ0, TestSignalName => "DQ", RefSignal => WENeg, RefSignalName => "WE#", SetupHigh => tsetup_DQ0_CENeg, SetupLow => tsetup_DQ0_CENeg, HoldHigh => thold_DQ0_CENeg, HoldLow => thold_DQ0_CENeg, CheckEnabled => TRUE, RefTransition => '/', HeaderMsg => InstancePath & PartID, TimingData => TD_DQ0_WENeg, Violation => Tviol_DQ0_WENeg ); -- Setup/Hold Check between CENeg and WENeg -- VitalSetupHoldCheck ( TestSignal => WENeg, TestSignalName => "WE#", RefSignal => CENeg, RefSignalName => "CE#", SetupLow => tsetup_CENeg_WENeg, CheckEnabled => TRUE, RefTransition => '\', HeaderMsg => InstancePath & PartID, TimingData => TD_WENeg_CENeg_F, Violation => Tviol_WENeg_CENeg_F ); -- Setup/Hold Check between CENeg and WENeg VitalSetupHoldCheck ( TestSignal => CENeg, TestSignalName => "CE#", RefSignal => WENeg, RefSignalName => "WE#", SetupLow => tsetup_CENeg_WENeg, CheckEnabled => TRUE, RefTransition => '\', HeaderMsg => InstancePath & PartID, TimingData => TD_CENeg_WENeg_F, Violation => Tviol_CENeg_WENeg_F ); -- Setup/Hold Check between BYTENeg and WENeg VitalSetupHoldCheck ( TestSignal => BYTENeg, TestSignalName => "BYTENeg", RefSignal => WENeg, RefSignalName => "WE#", SetupHigh => tsetup_A0_CENeg, SetupLow => tsetup_A0_CENeg, HoldHigh => thold_A0_CENeg, HoldLow => thold_A0_CENeg, CheckEnabled => TRUE, RefTransition => '\', HeaderMsg => InstancePath & PartID, TimingData => TD_BYTENeg_WENeg, Violation => Tviol_BYTENeg_WENeg ); -- Setup/Hold Check between BYTENeg and WENeg VitalSetupHoldCheck ( TestSignal => BYTENeg, TestSignalName => "BYTE#", RefSignal => CENeg, RefSignalName => "CE#", HoldHigh => thold_BYTENeg_CENeg, HoldLow => thold_BYTENeg_CENeg, CheckEnabled => TRUE, RefTransition => '\', HeaderMsg => InstancePath & PartID, TimingData => TD_BYTENeg_CENeg, Violation => Tviol_BYTENeg_CENeg ); -- Hold Check between OENeg and WENeg VitalSetupHoldCheck ( TestSignal => OENeg, TestSignalName => "OE#", RefSignal => WENeg, RefSignalName => "WE#", HoldHigh => thold_OENeg_WENeg, CheckEnabled => PDONE = '0' OR EDONE = '0', RefTransition => '/', HeaderMsg => InstancePath & PartID, TimingData => TD_OENeg_WENeg_R, Violation => Tviol_OENeg_WENeg_R ); -- Hold Check between CENeg and WENeg VitalSetupHoldCheck ( TestSignal => CENeg, TestSignalName => "CE#", RefSignal => WENeg, RefSignalName => "WE#", HoldLow => thold_CENeg_WENeg, CheckEnabled => TRUE, RefTransition => '/', HeaderMsg => InstancePath & PartID, TimingData => TD_CENeg_WENeg, Violation => Tviol_CENeg_WENeg ); -- Setup/Hold Check between CENeg and WENeg VitalSetupHoldCheck ( TestSignal => WENeg, TestSignalName => "WE#", RefSignal => CENeg, RefSignalName => "CE#", HoldLow => thold_CENeg_WENeg, CheckEnabled => TRUE, RefTransition => '/', HeaderMsg => InstancePath & PartID, TimingData => TD_WENeg_CENeg_R, Violation => Tviol_WENeg_CENeg_R ); -- Hold Check between CENeg and RESETNeg VitalSetupHoldCheck ( TestSignal => CENeg, TestSignalName => "CE#", RefSignal => RESETNeg, RefSignalName => "RESET#", HoldHigh => thold_CENeg_RESETNeg, CheckEnabled => TRUE, RefTransition => '/', HeaderMsg => InstancePath & PartID, TimingData => TD_CENeg_RESETNeg, Violation => Tviol_CENeg_RESETNeg ); -- Hold Check between OENeg and RESETNeg VitalSetupHoldCheck ( TestSignal => OENeg, TestSignalName => "OE#", RefSignal => RESETNeg, RefSignalName => "RESET#", HoldHigh => thold_CENeg_RESETNeg, CheckEnabled => TRUE, RefTransition => '/', HeaderMsg => InstancePath & PartID, TimingData => TD_OENeg_RESETNeg, Violation => Tviol_OENeg_RESETNeg ); -- Hold Check between WENeg and RESETNeg VitalSetupHoldCheck ( TestSignal => WENeg, TestSignalName => "WE#", RefSignal => RESETNeg, RefSignalName => "RESET#", HoldHigh => thold_CENeg_RESETNeg, CheckEnabled => TRUE, RefTransition => '/', HeaderMsg => InstancePath & PartID, TimingData => TD_WENeg_RESETNeg, Violation => Tviol_WENeg_RESETNeg ); -- Hold Check between OENeg and WENeg VitalSetupHoldCheck ( TestSignal => WENeg, TestSignalName => "WE#", RefSignal => OENeg, RefSignalName => "OE#", HoldHigh => thold_WENeg_OENeg, CheckEnabled => TRUE, RefTransition => '/', HeaderMsg => InstancePath & PartID, TimingData => TD_WENeg_OENeg_R, Violation => Tviol_WENeg_OENeg_R ); -- PulseWidth Check for RESETNeg VitalPeriodPulseCheck ( TestSignal => RESETNeg, TestSignalName => "RESET#", PulseWidthLow => tpw_RESETNeg_negedge, CheckEnabled => TRUE, HeaderMsg => InstancePath & PartID, PeriodData => PD_RESETNeg, Violation => Pviol_RESETNeg ); -- PulseWidth Check for WENeg VitalPeriodPulseCheck ( TestSignal => WENeg, TestSignalName => "WE#", PulseWidthHigh => tpw_WENeg_posedge, PulseWidthLow => tpw_WENeg_negedge, CheckEnabled => TRUE, HeaderMsg => InstancePath & PartID, PeriodData => PD_WENeg, Violation => Pviol_WENeg ); -- PulseWidth Check for CENeg VitalPeriodPulseCheck ( TestSignal => CENeg, TestSignalName => "CE#", PulseWidthHigh => tpw_WENeg_posedge, PulseWidthLow => tpw_WENeg_negedge, CheckEnabled => TRUE, HeaderMsg => InstancePath & PartID, PeriodData => PD_CENeg, Violation => Pviol_CENeg ); -- PulseWidth Check for A VitalPeriodPulseCheck ( TestSignal => A(0), TestSignalName => "A", PulseWidthHigh => tpw_A0_negedge, PulseWidthLow => tpw_A0_negedge, CheckEnabled => TRUE, HeaderMsg => InstancePath & PartID, PeriodData => PD_A0, Violation => Pviol_A0 ); Violation := Tviol_A0_CENeg OR Tviol_A0_WENeg OR Tviol_BYTENeg_WENeg OR Tviol_DQ0_CENeg OR Tviol_DQ0_WENeg OR Tviol_CENeg_RESETNeg OR Tviol_OENeg_RESETNeg OR Tviol_WENeg_RESETNeg OR Tviol_BYTENeg_CENeg OR Tviol_WENeg_OENeg_R OR Tviol_OENeg_WENeg_R OR Tviol_CENeg_WENeg OR Tviol_WENeg_CENeg_F OR Tviol_WENeg_CENeg_R OR Tviol_CENeg_WENeg_F OR Pviol_RESETNeg OR Pviol_WENeg OR Pviol_CENeg OR Pviol_A0 ; Viol <= Violation; ASSERT Violation = '0' REPORT InstancePath & partID & ": simulation may be" & " inaccurate due to timing violations" SEVERITY WARNING; END IF; END PROCESS VITALTimingCheck; --------------------------------------------------------------------------- -- sequential process for reset control and FSM state transition --------------------------------------------------------------------------- StateTransition : PROCESS(next_state, RESETNeg, RST, READY_out, PDone, EDone, PoweredUp) VARIABLE R : std_logic := '0'; --prog or erase in progress VARIABLE E : std_logic := '0'; --reset timming error BEGIN IF PoweredUp='1' THEN --Hardware reset timing control IF falling_edge(RESETNeg) THEN E := '0'; IF (PDONE='0' OR EDONE='0') THEN --if program or erase in progress READY_in <= '1'; R :='1'; ELSE READY_in <= '0'; R:='0'; --prog or erase not in progress END IF; ELSIF rising_edge(RESETNeg) AND RST='1' THEN --RESET# pulse < tRP READY_in <= '0'; R := '0'; E := '1'; END IF; IF RESETNeg='1' AND ( R='0' OR (R='1' AND READY_out='1')) THEN current_state <= next_state; READY_in <= '0'; E := '0'; R := '0'; reseted <= '1'; ELSIF (R='0' AND RESETNeg='0' AND RST='0')OR (R='1' AND RESETNeg='0' AND RST='0' AND READY_out='0')OR (R='1' AND RESETNeg='1' AND RST='0' AND READY_out='0')OR (R='1' AND RESETNeg='1' AND RST='1' AND READY_out='0') THEN --no state transition while RESET# low current_state <= RESET; --reset start reseted <= '0'; END IF; ELSE current_state <= RESET; -- reset reseted <= '0'; E := '0'; R := '0'; END IF; END PROCESS StateTransition; --------------------------------------------------------------------------- --Glitch Protection: Inertial Delay does not propagate pulses <5ns --------------------------------------------------------------------------- gWE_n <= WENeg AFTER 5 ns; gCE_n <= CENeg AFTER 5 ns; gOE_n <= OENeg AFTER 5 ns; --latch address on rising edge and data on falling edge of write write_dc: PROCESS (gWE_n, gCE_n, gOE_n, RESETNeg, reseted) BEGIN IF RESETNeg /= '0' AND reseted = '1' THEN IF (gWE_n = '0') AND (gCE_n = '0') AND (gOE_n = '1') THEN write <= '1'; ELSIF (gWE_n = '1' OR gCE_n = '1') AND gOE_n = '1' THEN write <= '0'; ELSE write <= 'X'; END IF; END IF; IF ((gWE_n = '1') AND (gCE_n = '0') AND (gOE_n = '0') )THEN read <= '1'; ELSE read <= '0'; END IF; END PROCESS write_dc; --------------------------------------------------------------------------- --Process that reports warning when changes on signals WE#, CE#, OE# are --discarded --------------------------------------------------------------------------- PulseWatch : PROCESS (WENeg, CENeg, OENeg, gWE_n, gCE_n, gOE_n) BEGIN IF (WENeg'EVENT AND (gWE_n = WENeg)) OR (CENeg'EVENT AND (gCE_n = CENeg)) OR (OENeg'EVENT AND (gOE_n = OENeg)) THEN ASSERT false REPORT "Glitch detected on write control signals" SEVERITY warning; END IF; END PROCESS PulseWatch; --------------------------------------------------------------------------- --Latch address on falling edge of WE# or CE# what ever comes later --Latches data on rising edge of WE# or CE# what ever comes first -- also Write cycle decode --------------------------------------------------------------------------- BusCycleDecode : PROCESS(A, Din, write, WENeg, CENeg, OENeg, BYTENeg, reseted) VARIABLE A_tmp : NATURAL RANGE 0 TO 16#7FF#; VARIABLE SA_tmp : NATURAL RANGE 0 TO SecNum; VARIABLE A_tmp1 : NATURAL RANGE 0 TO SecSize; VARIABLE i : NATURAL; BEGIN IF reseted='1' THEN IF (falling_edge(WENeg) AND CENeg='0' AND OENeg = '1' ) OR (falling_edge(CENeg) AND WENeg /= OENeg ) OR (falling_edge(OENeg) AND WENeg='1' AND CENeg = '0' ) OR ((A'EVENT OR (Din(15)'EVENT AND BYTENeg='0' AND Din(15) /= Dout_zd(15)) OR BYTENeg'EVENT ) AND WENeg = '1' AND CENeg = '0' AND OENeg = '0') THEN A_tmp := to_nat( A(10 downto 0) ); SA_tmp:= to_nat( A(HiAddrBit downto 15)); IF (BYTENeg = '0') THEN A_tmp1 := to_nat( A(14 downto 0) & Din(15) ); ELSE A_tmp1 := to_nat( A(14 downto 0) & '0' ); END IF; ELSIF (rising_edge(WENeg) OR rising_edge(CENeg)) AND write = '1' THEN D_tmp0 <= to_nat(Din(7 downto 0)); IF BYTENeg = '1' THEN D_tmp1 <= to_nat(Din(15 downto 8)); END IF; END IF; IF rising_edge(write) OR falling_edge(OENeg) OR ((A'EVENT OR (Din(15)'EVENT AND BYTENeg = '0') OR BYTENeg'EVENT ) AND WENeg = '1' AND CENeg = '0' AND OENeg = '0') THEN SecAddr <= SA_tmp; Address <= A_tmp1; FOR i IN 0 TO SubSecNum LOOP IF A_tmp1 >= sssa(vs)(i) AND A_tmp1 <= ssea(vs)(i) THEN SubSect <= i; END IF; END LOOP; Addr <= A_tmp; END IF; END IF; END PROCESS BusCycleDecode; --------------------------------------------------------------------------- -- Timing control for the Program Operations -- start --------------------------------------------------------------------------- ProgTime :PROCESS(PSTART, BYTENeg, ESP_ACT, reseted) VARIABLE duration : time; VARIABLE pob : time; VARIABLE pow : time; BEGIN IF LongTimming THEN pob := tdevice_POB; pow := tdevice_POW; ELSE pob := tdevice_POB / 1; pow := tdevice_POW / 1; END IF; IF rising_edge(reseted) THEN PDONE <= '1'; -- reset done, programming terminated ELSIF reseted = '1' THEN IF rising_edge(PSTART) AND PDONE='1' THEN IF ( (SA /= VarSect AND Sec_Prot(SA) = '0' AND (Ers_queue(SA) = '0' OR ESP_ACT = '0') AND (FactoryProt = '0' OR OTP_ACT = '0') ) OR (SA = VarSect AND SubSec_Prot(SSA) = '0' AND (Ers_Sub_queue(SSA) = '0' OR ESP_ACT = '0') AND (FactoryProt = '0' OR OTP_ACT = '0') ) ) THEN IF BYTENeg = '1' THEN duration := pow;--tdevice_POW; ELSE duration := pob;--tdevice_POB; END IF; PDONE <= '0', '1' AFTER duration; ELSE PERR <= '1', '0' AFTER 1 us; END IF; END IF; END IF; END PROCESS ProgTime; --------------------------------------------------------------------------- -- Timing control for the Erase Operations --------------------------------------------------------------------------- ErsTime :PROCESS(ESTART, ESUSP, ERES, Ers_Queue, Ers_Sub_Queue, reseted) VARIABLE cnt : NATURAL RANGE 0 TO SecNum+SubSecNum+2 := 0; VARIABLE elapsed : time; VARIABLE duration : time; VARIABLE start : time; VARIABLE seo : time; BEGIN IF LongTimming THEN seo := tdevice_SEO; ELSE seo := tdevice_SEO/1000; END IF; IF rising_edge(reseted) THEN EDONE <= '1'; -- reset done, ERASE terminated ELSIF reseted = '1' THEN IF rising_edge(ESTART) AND EDONE = '1' THEN cnt := 0; FOR i IN Ers_Queue'RANGE LOOP IF i = VarSect THEN FOR j IN 0 TO SubSecNum LOOP IF Ers_Sub_Queue(j) = '1' AND SubSec_Prot(j) /= '1' THEN cnt := cnt + 1; END IF; END LOOP; ELSIF Ers_Queue(i) = '1' AND Sec_Prot(i) /= '1' THEN cnt := cnt +1; END IF; END LOOP; IF cnt > 0 THEN elapsed := 0 ns; duration := cnt* seo; EDONE <= '0', '1' AFTER duration; start := NOW; ELSE EERR <= '1', '0' AFTER 100 us; END IF; ELSIF rising_edge(ESUSP) AND EDONE = '0' THEN elapsed := NOW - start; duration := duration - elapsed; EDONE <= '0'; ELSIF rising_edge(ERES) AND EDONE = '0' THEN start := NOW; EDONE <= '0', '1' AFTER duration; END IF; END IF; END PROCESS; --------------------------------------------------------------------------- -- Main Behavior Process -- combinational process for next state generation --------------------------------------------------------------------------- StateGen :PROCESS(write, Addr, D_tmp0, ULBYPASS, PDONE, EDONE, CTMOUT_out, START_T1_out, reseted, READY_out, PERR, EERR) VARIABLE PATTERN_1 : boolean := FALSE; VARIABLE PATTERN_2 : boolean := FALSE; VARIABLE A_PAT_1 : boolean := FALSE; --DATA High Byte VARIABLE DataHi : NATURAL RANGE 0 TO MaxData := 0; --DATA Low Byte VARIABLE DataLo : NATURAL RANGE 0 TO MaxData := 0; BEGIN ----------------------------------------------------------------------- -- Functionality Section ----------------------------------------------------------------------- IF falling_edge(write) THEN DataLo := D_tmp0; PATTERN_1 := (Addr = 16#555#) AND (DataLo = 16#AA#) ; PATTERN_2 := (Addr = 16#2AA#) AND (DataLo = 16#55#) ; A_PAT_1 := ((Addr = 16#555#) AND (ULBYPASS = '0')) OR (ULBYPASS = '1'); END IF; IF reseted /= '1' THEN next_state <= current_state; ELSE CASE current_state IS WHEN RESET => IF falling_edge(write) THEN IF (PATTERN_1)THEN next_state <= Z001; ELSIF ((Addr=16#55#) AND (DataLo=16#98#))THEN next_state <= CFI; ELSE next_state <= RESET; END IF; END IF; WHEN Z001 => IF falling_edge(write) THEN IF (PATTERN_2) THEN next_state <= PREL_SETBWB; ELSE next_state <= RESET; END IF; END IF; WHEN PREL_SETBWB => IF falling_edge(write) THEN IF (A_PAT_1 AND (DataLo = 16#20#)) THEN next_state <= PREL_ULBYPASS; ELSIF (A_PAT_1 AND (DataLo = 16#90#)) THEN next_state <= AS; ELSIF (A_PAT_1 AND (DataLo = 16#A0#)) THEN next_state <= A0SEEN; -- Enter program ELSIF (A_PAT_1 AND (DataLo=16#88#)) THEN next_state <= OTP; --Enter SecSi ELSIF (A_PAT_1 AND (DataLo = 16#80#)) THEN next_state <= C8; ELSE next_state <= RESET; END IF; END IF; WHEN PREL_ULBYPASS => IF falling_edge(write) THEN IF (A_PAT_1 AND (DataLo = 16#90#)) THEN next_state <= PREL_ULBYPASS_Z001; ELSIF (A_PAT_1 AND (DataLo = 16#A0#)) THEN next_state <= A0SEEN; ELSIF (A_PAT_1 AND (DataLo = 16#80#)) THEN next_state <= C8_PREL; ELSE next_state <= PREL_ULBYPASS; END IF; END IF; WHEN PREL_ULBYPASS_Z001 => IF falling_edge(write) THEN IF DataLo = 16#00# THEN IF ESP_ACT='1' THEN next_state <= ESP; ELSE next_state <= RESET; END IF; ELSE next_state <= PREL_ULBYPASS; END IF; END IF; WHEN CFI => IF falling_edge(write) THEN IF (DataLo = 16#F0#) THEN next_state <= RESET; ELSE next_state <= CFI; END IF; END IF; WHEN AS => IF falling_edge(write) THEN IF (DataLo = 16#F0#) THEN next_state <= RESET; ELSIF (Addr = 16#55#) AND (DataLo = 16#98#) THEN next_state <= CFI; ELSE next_state <= AS; END IF; END IF; WHEN A0SEEN => IF falling_edge(write) THEN next_state <= PGMS; ELSE next_state <= A0SEEN; END IF; WHEN OTP => IF falling_edge(write) THEN IF PATTERN_1 THEN next_state <= OTP_Z001; ELSE next_state <= OTP; END IF; END IF; WHEN OTP_Z001 => IF falling_edge(write) THEN IF PATTERN_2 THEN next_state <= OTP_PREL; ELSE next_state <= OTP; END IF; END IF; WHEN OTP_PREL => IF falling_edge(write) THEN IF (A_PAT_1 AND (DataLo = 16#90#))THEN next_state <= OTP_AS; ELSIF (A_PAT_1 AND (DataLo = 16#A0#))THEN next_state <= OTP_A0SEEN; ELSE next_state <= OTP; END IF; END IF; WHEN OTP_AS => IF falling_edge(write) THEN IF DataLo=16#00# THEN IF ESP_ACT = '1' THEN next_state <= ESP; ELSE next_state <= RESET; END IF; ELSIF DataLo=16#F0# THEN next_state <= OTP; ELSE next_state <= OTP_AS; END IF; END IF; WHEN OTP_A0SEEN => IF falling_edge(write) THEN IF ((vs = 1) AND ( SecAddr = VarSect ) AND (Address >= 16#FF00#) AND (Address <= 16#FFFF#)) OR ((vs = 0) AND ( SecAddr = VarSect ) AND (Address >= 0) AND (Address <= 16#FF#)) THEN next_state <= PGMS; ELSE next_state <= OTP; END IF; END IF; WHEN C8 => IF falling_edge(write) THEN IF PATTERN_1 THEN next_state <= C8_Z001; ELSE next_state <= RESET; END IF; END IF; WHEN C8_Z001 => IF falling_edge(write) THEN IF PATTERN_2 THEN next_state <= C8_PREL; ELSE next_state <= RESET; END IF; END IF; WHEN C8_PREL => IF falling_edge(write) THEN IF A_PAT_1 AND DataLo = 16#10# THEN next_state <= ERS; ELSIF DataLo = 16#30# THEN next_state <= SERS; ELSIF ULBYPASS = '1' THEN next_state <= PREL_ULBYPASS; ELSE next_state <= RESET; END IF; END IF; WHEN ERS => IF rising_edge(EDONE) OR falling_edge(EERR) THEN IF ULBYPASS = '1' THEN next_state <= PREL_ULBYPASS; ELSE next_state <= RESET; END IF; END IF; WHEN SERS => IF CTMOUT_out = '1' AND CTMOUT_out'EVENT THEN next_state <= SERS_EXEC; ELSIF falling_edge(write) THEN IF (DataLo = 16#B0#) THEN next_state <= ESP; ELSIF (DataLo = 16#30#) THEN next_state <= SERS; ELSIF ULBYPASS = '1' THEN next_state <= PREL_ULBYPASS; ELSE next_state <= RESET; END IF; END IF; WHEN ESPS => IF (START_T1_out = '1') THEN next_state <= ESP; END IF; WHEN SERS_EXEC => IF rising_edge(EDONE) OR falling_edge(EERR) THEN IF ULBYPASS = '1' THEN next_state <= PREL_ULBYPASS; ELSE next_state <= RESET; END IF; ELSIF EERR /= '1' THEN IF falling_edge(write) THEN IF DataLo = 16#B0# THEN next_state <= ESPS; END IF; END IF; END IF; WHEN ESP => IF falling_edge(write) THEN IF DataLo = 16#30# THEN next_state <= SERS_EXEC; ELSIF A_PAT_1 AND DataLo = 16#90# THEN next_state <= ESP_AS; END IF; IF Addr = 16#55# AND DataLo = 16#98# THEN next_state <= ESP_CFI; ELSIF PATTERN_1 THEN next_state <= ESP_Z001; END IF; END IF; WHEN ESP_Z001 => IF falling_edge(write) THEN IF PATTERN_2 THEN next_state <= ESP_PREL; ELSE next_state <= ESP; END IF; END IF; WHEN ESP_PREL => IF falling_edge(write) THEN IF A_PAT_1 AND DataLo = 16#20# THEN next_state <= PREL_ULBYPASS; ELSIF A_PAT_1 AND DataLo = 16#A0# THEN next_state <= ESP_A0SEEN; ELSIF A_PAT_1 AND DataLo = 16#88# THEN next_state <= OTP; ELSIF A_PAT_1 AND DataLo = 16#90# THEN next_state <= ESP_AS; ELSE next_state <= ESP; END IF; END IF; WHEN ESP_CFI => IF falling_edge(write) THEN IF Addr = 16#55# AND DataLo = 16#98# THEN null; ELSIF DataLo = 16#F0# THEN next_state <= ESP; ELSE next_state <= ESP_CFI; END IF; END IF; WHEN ESP_A0SEEN => IF falling_edge(write) THEN next_state <= PGMS; END IF; WHEN ESP_AS => IF falling_edge(write) THEN IF DataLo = 16#F0# THEN next_state <= ESP; END IF; END IF; WHEN PGMS => IF rising_edge(PDONE) OR falling_edge(PERR) THEN IF ESP_ACT = '1' THEN next_state <= ESP; ELSIF ULBYPASS = '1' THEN next_state <= PREL_ULBYPASS; ELSIF OTP_ACT = '1' THEN next_state <= OTP; ELSE next_state <= RESET; END IF; END IF; END CASE; END IF; END PROCESS StateGen; --------------------------------------------------------------------------- --FSM Output generation and general funcionality --------------------------------------------------------------------------- Functional : PROCESS(write, read, Addr, D_tmp0, D_tmp1, Address, SecAddr, PDONE, EDONE, START_T1_out, CTMOUT_out, RST, reseted, READY_out, gOE_n, current_state, BYTENeg) --Common Flash Interface Query codes TYPE CFItype IS ARRAY (16#10# TO 16#50#) OF NATURAL RANGE 0 TO 16#FF#; --Program TYPE WDataType IS ARRAY (0 TO 1) OF INTEGER RANGE -1 TO MaxData; TYPE WAddrType IS ARRAY (0 TO 1) OF INTEGER RANGE -1 TO SecSize; VARIABLE CFI_array : CFItype :=(OTHERS=>0); VARIABLE WData : WDataType:=(OTHERS=>0); VARIABLE WAddr : WAddrType:=(OTHERS=>-1); VARIABLE cnt : NATURAL RANGE 0 TO 31 := 0; VARIABLE PATTERN_1 : boolean := FALSE; VARIABLE PATTERN_2 : boolean := FALSE; VARIABLE A_PAT_1 : boolean := FALSE; VARIABLE oe : boolean := FALSE; --Status reg. VARIABLE Status : std_logic_vector(7 downto 0) := (OTHERS=>'0'); VARIABLE old_bit : std_logic_vector(7 downto 0); VARIABLE new_bit : std_logic_vector(7 downto 0); VARIABLE old_int : INTEGER RANGE -1 to MaxData; VARIABLE new_int : INTEGER RANGE -1 to MaxData; VARIABLE wr_cnt : NATURAL RANGE 0 TO 31; --DATA High Byte VARIABLE DataHi : NATURAL RANGE 0 TO MaxData := 0; --DATA Low Byte VARIABLE DataLo : NATURAL RANGE 0 TO MaxData := 0; VARIABLE temp : std_logic_vector(7 downto 0); VARIABLE CORRUPT : std_ulogic := '0'; VARIABLE STAT_ACT : BOOLEAN := FALSE; VARIABLE Status7_valid : std_logic; VARIABLE pgm_addr : INTEGER RANGE 0 TO (SecNum+1)*(SecSize+1); BEGIN ----------------------------------------------------------------------- -- Functionality Section ----------------------------------------------------------------------- IF falling_edge(write) THEN DataLo := D_tmp0; DataHi := D_tmp1; PATTERN_1 := (Addr = 16#555#) AND (DataLo = 16#AA#) ; PATTERN_2 := (Addr = 16#2AA#) AND (DataLo = 16#55#) ; A_PAT_1 := ((Addr = 16#555#)AND (ULBYPASS = '0')) OR (ULBYPASS = '1'); END IF; oe := rising_edge(read) OR (read = '1' AND (Address'EVENT OR SecAddr'EVENT OR BYTENEg'EVENT)); IF reseted = '1' THEN CASE current_state IS WHEN RESET => ESP_ACT <= '0'; OTP_ACT <= '0'; ULBYPASS <= '0'; CTMOUT_in <= '0'; IF falling_edge(write) THEN STAT_ACT := FALSE; END IF; IF oe THEN IF STAT_ACT AND (((prev_state=ERS OR prev_state=SERS_EXEC) AND (Ers_Queue(SecAddr) = '1' OR Ers_Sub_queue(SubSect) = '1')) OR (prev_state=PGMS AND (SecAddr*(SecSize+1)+Address = pgm_addr))) THEN Status(3) := '0'; Status(7) := Status7_valid; DOut_zd(7 downto 0) <= Status; IF BYTENeg = '1' THEN DOut_zd(15 downto 8) <= (OTHERS => '0'); END IF; ELSE MemRead(SecAddr, Address, BYTENeg, DOut_zd); END IF; STAT_ACT := FALSE; END IF; --ready signal active RY_zd <= '1'; WHEN Z001 => null; WHEN PREL_SETBWB => IF falling_edge(write) THEN IF (A_PAT_1 AND (DataLo = 16#20#)) THEN ULBYPASS <= '1'; ELSIF (A_PAT_1 AND (DataLo = 16#90#)) THEN ULBYPASS <= '0'; ELSIF (A_PAT_1 AND (DataLo = 16#88#)) THEN ULBYPASS <= '0'; OTP_ACT <= '1'; END IF; END IF; WHEN PREL_ULBYPASS => IF falling_edge(write) THEN IF (DataLo = 16#20#) THEN ULBYPASS <= '1'; ELSIF (A_PAT_1 AND (DataLo = 16#90#)) THEN ULBYPASS <= '0'; ESP_ACT <= '0'; END IF; STAT_ACT := FALSE; END IF; IF STAT_ACT AND (((prev_state=ERS OR prev_state=SERS_EXEC) AND (Ers_Queue(SecAddr) = '1' OR Ers_Sub_queue(SubSect) = '1')) OR (prev_state=PGMS AND (SecAddr*(SecSize+1)+Address = pgm_addr))) THEN Status(3) := '0'; Status(7) := Status7_valid; DOut_zd(7 downto 0) <= Status; IF BYTENeg = '1' THEN DOut_zd(15 downto 8) <= (OTHERS => '0'); END IF; STAT_ACT := FALSE; END IF; --ready signal active RY_zd <= '1'; WHEN PREL_ULBYPASS_Z001 => IF falling_edge(write) THEN IF DataLo=16#00# THEN ULBYPASS <= '0'; END IF; END IF; RY_zd <= '1'; WHEN CFI => IF falling_edge(write) THEN IF (DataLo = 16#F0#) THEN ULBYPASS <= '0'; END IF; ELSIF oe THEN DOut_zd(15 downto 0) <= (OTHERS=>'0'); IF ((Addr >= 16#10#) AND (Addr <= 16#50#)) THEN DOut_zd(7 downto 0) <= to_slv(CFI_array(Addr), 8); ELSE ASSERT FALSE REPORT "Invalid CFI query address" SEVERITY warning; END IF; END IF; WHEN AS => IF oe THEN AsRead(Address, BYTENeg, vs, SecAddr, Dout_zd); END IF; WHEN A0SEEN => IF falling_edge(write) THEN PSTART <= '1', '0' AFTER 1 ns; WData(0) := -1; WData(1) := -1; IF Viol = '0' THEN WData(0) := DataLo; WData(1) := DataHi; END IF; WAddr(0) := Address; SA <= SecAddr; SSA <= SubSect; temp := to_slv(DataLo, 8); Status(7) := NOT temp(7); IF BYTENeg = '1' THEN WAddr(1) := WAddr(0) + 1; ELSE WAddr(1) := -1; END IF; END IF; WHEN OTP => OTP_ACT <= '1'; IF falling_edge(write) THEN STAT_ACT := FALSE; END IF; IF oe THEN IF STAT_ACT AND prev_state=PGMS AND (pgm_addr = (Address MOD (SecSiSize + 1))) THEN Status(7) := Status7_valid; DOut_zd(7 downto 0) <= Status; IF BYTENeg = '1' THEN DOut_zd(15 downto 8) <= (OTHERS => '0'); END IF; ELSE --read SecSi Sector Region SecSiRead(SecAddr, Address, BYTENeg, Dout_zd); END IF; STAT_ACT := FALSE; END IF; --ready signal active RY_zd <= '1'; WHEN OTP_Z001 => null; WHEN OTP_PREL => null; WHEN OTP_AS => IF falling_edge(write) THEN IF DataLo=16#00# THEN OTP_ACT <= '0'; END IF; END IF; WHEN OTP_A0SEEN => IF falling_edge(write) THEN OTP_ACT <= '1'; WData(0) := -1; WData(1) := -1; IF Viol = '0' THEN WData(0) := DataLo; WData(1) := DataHi; END IF; WAddr(0) := Address MOD (SecSiSize+1); SA <= SecAddr; SSA <= SubSect; temp := to_slv(DataLo, 8); Status(7) := NOT temp(7); IF BYTENeg = '1' THEN WAddr(1) := WAddr(0) + 1; ELSE WAddr(1) := -1; END IF; IF ((vs = 1) AND ( SecAddr = VarSect ) AND (Address >= 16#FF00#) AND (Address <= 16#FFFF#)) OR ((vs = 0) AND ( SecAddr = VarSect ) AND (Address >= 0) AND (Address <= 16#FF#)) THEN PSTART <= '1', '0' AFTER 1 ns; END IF; END IF; WHEN C8 => null; WHEN C8_Z001 => null; WHEN C8_PREL => IF falling_edge(write) THEN IF A_PAT_1 AND DataLo = 16#10# THEN --Start Chip Erase ESTART <= '1', '0' AFTER 1 ns; ESUSP <= '0'; ERES <= '0'; Ers_Queue <= (OTHERS => '1'); Ers_Sub_Queue <= (OTHERS => '1'); Status := "00001000"; ELSIF DataLo = 16#30# THEN --put selected sector to sec. ers. queue --start timeout Ers_Queue <= (OTHERS => '0'); Ers_Sub_Queue <= (OTHERS => '0'); IF SecAddr = VarSect THEN Ers_Sub_Queue(SubSect) <= '1'; ELSE Ers_Queue(SecAddr) <= '1'; END IF; CTMOUT_in <= '0', '1' AFTER 1 ns; END IF; END IF; WHEN ERS => IF oe THEN ----------------------------------------------------------- -- read status / embeded erase algorithm - Chip Erase ----------------------------------------------------------- Status(7) := '0'; Status(6) := NOT Status(6); --toggle Status(5) := '0'; Status(3) := '1'; Status(2) := NOT Status(2); --toggle DOut_zd(7 downto 0) <= Status; END IF; IF EERR /= '1' THEN IF (CORRUPT = '0') THEN FOR i IN 0 TO SecNum LOOP IF i = VarSect THEN FOR j IN 0 TO SubSecNum LOOP IF SubSec_Prot(j) /= '1' THEN Mem(i)(sssa(vs)(j) TO ssea(vs)(j)) := (OTHERS => -1); END IF; END LOOP; ELSIF Sec_Prot(i) /= '1' THEN Mem(i):= (OTHERS => -1); END IF; END LOOP; CORRUPT := '1'; STAT_ACT := FALSE; END IF; IF EDONE = '1' THEN CORRUPT := '0'; FOR i IN 0 TO SecNum LOOP IF i = VarSect THEN FOR j IN 0 TO SubSecNum LOOP IF SubSec_prot(j) /= '1' THEN Mem(i)(sssa(vs)(j) TO ssea(vs)(j)) := (OTHERS => MaxData); END IF; END LOOP; ELSIF Sec_Prot(i) /= '1' THEN Mem(i):= (OTHERS => MaxData); END IF; END LOOP; STAT_ACT := TRUE; Status(3) := '0'; Status7_valid := '1'; prev_state <= current_state; END IF; END IF; -- busy signal active RY_zd <= '0'; WHEN SERS => IF CTMOUT_out = '1' AND CTMOUT_out'EVENT THEN CTMOUT_in <= '0'; START_T1_in <= '0'; ESTART <= '1', '0' AFTER 1 ns; ESUSP <= '0'; ERES <= '0'; ELSIF falling_edge(write) THEN IF (DataLo = 16#B0#) THEN --need to start erase process prior to suspend ESTART <= '1', '0' AFTER 1 ns; ESUSP <= '0'; ERES <= '0'; ESP_ACT <= '1'; ESUSP <= '1' AFTER 2 ns, '0' AFTER 3 ns; ELSIF (DataLo = 16#30#) THEN CTMOUT_in <= '0', '1' AFTER 1 ns; IF SecAddr = VarSect THEN Ers_Sub_Queue(SubSect) <= '1'; ELSE Ers_Queue(SecAddr) <= '1'; END IF; END IF; ELSIF oe THEN ----------------------------------------------------------- --read status - sector erase timeout ----------------------------------------------------------- Status(3) := '0'; DOut_zd(7 downto 0) <= Status; END IF; --ready signal active RY_zd <= '0'; WHEN ESPS => ESUSP <= '1'; IF (START_T1_out = '1') THEN ESP_ACT <= '1'; START_T1_in <= '0'; ELSIF oe THEN ----------------------------------------------------------- --read status / erase suspend timeout - stil erasing ----------------------------------------------------------- --read is modified so status 2 toggles only if sector -- selected for erasure is read -- if sector that is not selected for erasure is read -- Status 2 stays does not change vaule IF (SecAddr /= VarSect AND Ers_Queue(SecAddr) = '1') OR (SecAddr = VarSect AND Ers_Sub_Queue(SubSect) = '1') THEN Status(2) := NOT Status(2); --toggle END IF; Status(7) := '0'; Status(6) := NOT Status(6); --toggle Status(5) := '0'; Status(3) := '1'; DOut_zd(7 downto 0) <= Status; END IF; --busy signal active RY_zd <= '0'; WHEN SERS_EXEC => IF oe THEN ----------------------------------------------------------- --read status Erase Busy ----------------------------------------------------------- --read is modified so status 2 toggles only if sector -- selected for erasure is read -- if sector that is not selected for erasure is read -- Status 2 stays does not change vaule IF (SecAddr /= VarSect AND Ers_Queue(SecAddr) = '1') OR (SecAddr = VarSect AND Ers_Sub_Queue(SubSect) = '1') THEN Status(2) := NOT Status(2); --toggle END IF; Status(7) := '0'; Status(6) := NOT Status(6); --toggle Status(5) := '0'; Status(3) := '1'; DOut_zd(7 downto 0) <= Status; END IF; IF EERR /= '1' THEN FOR i IN Ers_Queue'RANGE LOOP IF i = VarSect THEN FOR j IN 0 TO SubSecNum LOOP IF Ers_Sub_Queue(j) = '1' AND SubSec_Prot(j) /= '1' THEN Mem(i)(sssa(vs)(j) TO ssea(vs)(j)) := (OTHERS => -1); END IF; END LOOP; ELSIF Ers_Queue(i) = '1' AND Sec_Prot(i) /= '1' THEN Mem(i) := (OTHERS => -1); END IF; END LOOP; STAT_ACT := FALSE; IF EDONE = '1' THEN FOR i IN Ers_Queue'RANGE LOOP IF i = VarSect THEN FOR j IN 0 TO SubSecNum LOOP IF Ers_Sub_Queue(j) = '1' AND SubSec_Prot(j) /= '1' THEN Mem(i)(sssa(vs)(j) TO ssea(vs)(j)):= (OTHERS => MaxData); END IF; END LOOP; ELSIF Ers_Queue(i) = '1' AND Sec_Prot(i) /= '1' THEN Mem(i) := (OTHERS => MaxData); END IF; END LOOP; STAT_ACT := TRUE; Status(3) := '1'; Status7_valid := '1'; prev_state <= current_state; ELSIF falling_edge(write) THEN IF DataLo = 16#B0# THEN START_T1_in <= '1'; END IF; END IF; END IF; --busy signal active RY_zd <= '0'; WHEN ESP => ESUSP <= '0'; IF falling_edge(write) THEN IF DataLo = 16#30# THEN --resume erase ERES <= '1', '0' AFTER 1 ns; ESP_ACT <= '0'; END IF; ELSIF oe THEN ----------------------------------------------------------- --read ----------------------------------------------------------- IF (SecAddr /= VarSect AND Ers_Queue(SecAddr) /= '1') OR (SecAddr = VarSect AND Ers_Sub_Queue(SubSect) /= '1') THEN MemRead(SecAddr, Address, BYTENeg, DOut_zd); ELSE ------------------------------------------------------- --read status ------------------------------------------------------- Status(7) := '1'; -- Status(6) No toggle Status(5) := '0'; Status(2) := NOT Status(2); --toggle DOut_zd(7 downto 0) <= Status; END IF; END IF; --ready signal active RY_zd <= '1'; WHEN ESP_Z001 => null; WHEN ESP_PREL => IF falling_edge(write) THEN IF A_PAT_1 AND DataLo = 16#20# THEN ULBYPASS <= '1'; END IF; END IF; WHEN ESP_CFI => IF falling_edge(write) THEN IF Addr = 16#55# AND DataLo = 16#98# THEN null; ELSIF DataLo = 16#F0# THEN ESP_ACT <= '1'; ELSE ESP_ACT <= '1'; END IF; ELSIF oe THEN DOut_zd(15 downto 0) <= (OTHERS=>'0'); IF ((Addr >= 16#10#) AND (Addr <= 16#50#)) THEN DOut_zd(7 downto 0) <= to_slv(CFI_array(Addr) ,8); ELSE ASSERT FALSE REPORT "Invalid CFI query address" SEVERITY warning; END IF; END IF; WHEN ESP_A0SEEN => IF falling_edge(write) THEN ESP_ACT <= '1'; PSTART <= '1', '0' AFTER 1 ns; WData(0) := -1; WData(1) := -1; IF Viol = '0' THEN WData(0) := DataLo; WData(1) := DataHi; END IF; WAddr(0) := Address; SA <= SecAddr; SSA <= SubSect; temp := to_slv(DataLo, 8); Status(7) := NOT temp(7); IF BYTENeg = '1' THEN WAddr(1) := WAddr(0) +1; ELSE WAddr(1) := -1; END IF; END IF; WHEN ESP_AS => IF falling_edge(write) THEN IF DataLo = 16#F0# THEN -- resret ULBYPASS ULBYPASS <= '0'; END IF; ELSIF oe THEN AsRead(Address, BYTENeg, vs, SecAddr, Dout_zd); END IF; WHEN PGMS => IF oe THEN ----------------------------------------------------------- --read status ----------------------------------------------------------- Status(6) := NOT Status(6); --toggle Status(5) := '0'; --Status(2) no toggle Status(1) := '0'; DOut_zd(7 downto 0) <= Status; END IF; IF PERR/='1' THEN IF WAddr(1) < 0 THEN wr_cnt := 0; --if any of WAddr is equal to -1, ELSE --here is where this problem is handled wr_cnt := 1; --no need to handle it separately! END IF; FOR i IN wr_cnt downto 0 LOOP new_int:= WData(i); IF OTP_ACT /= '1' THEN old_int:=Mem(SA)(WAddr(i)); ELSE old_int := SecSi(WAddr(i)); END IF; IF new_int>-1 THEN new_bit:=to_slv(new_int,8); IF old_int>-1 THEN old_bit:=to_slv(old_int,8); FOR j IN 0 TO 7 LOOP IF old_bit(j) = '0' THEN new_bit(j):='0'; END IF; END LOOP; new_int:=to_nat(new_bit); END IF; WData(i):= new_int; ELSE WData(i):= -1; END IF; END LOOP; FOR i IN wr_cnt downto 0 LOOP IF OTP_ACT /= '1' THEN Mem(SA)(WAddr(i)) := -1; ELSE SecSi(WAddr(i)) := -1; END IF; END LOOP; IF PDONE = '1' AND (NOT PERR'EVENT) THEN FOR i IN wr_cnt downto 0 LOOP IF OTP_ACT /= '1' THEN --mem write Mem(SA)(WAddr(i)) := WData(i); pgm_addr:=SA*(SecSize+1)+WAddr(i); ELSE --SecSi write SecSi(WAddr(i)) := WData(i); pgm_addr:=WAddr(i); END IF; WData(i):= -1; END LOOP; STAT_ACT := TRUE; Status7_valid := not Status(7); prev_state <= current_state; END IF; END IF; --busy signal active RY_zd <= '0'; END CASE; END IF; --Output Disable Control IF (gOE_n = '1') OR (RESETNeg = '0' AND RST = '0') THEN DOut_zd <= (OTHERS=>'Z'); ELSE IF (BYTENeg = '0') THEN DOut_zd(15 downto 8) <= (OTHERS =>'Z'); END IF; END IF; IF NOW = 0 ns THEN ------------------------------------------------------------------- --CFI array data / s29al016j !!! DEVICE SPECIFIC ------------------------------------------------------------------- --CFI query identification string -- !!!!!! WORD ADDRESSES (x16) - for x8 addressing double addr CFI_array(16#10#) := 16#51#; CFI_array(16#11#) := 16#52#; CFI_array(16#12#) := 16#59#; CFI_array(16#13#) := 16#02#; CFI_array(16#14#) := 16#00#; CFI_array(16#15#) := 16#40#; CFI_array(16#16#) := 16#00#; CFI_array(16#17#) := 16#00#; CFI_array(16#18#) := 16#00#; CFI_array(16#19#) := 16#00#; CFI_array(16#1A#) := 16#00#; --system interface string CFI_array(16#1B#) := 16#27#; CFI_array(16#1C#) := 16#36#; CFI_array(16#1D#) := 16#00#; CFI_array(16#1E#) := 16#00#; CFI_array(16#1F#) := 16#03#; CFI_array(16#20#) := 16#00#; CFI_array(16#21#) := 16#09#; CFI_array(16#22#) := 16#00#; CFI_array(16#23#) := 16#05#; CFI_array(16#24#) := 16#00#; CFI_array(16#25#) := 16#04#; CFI_array(16#26#) := 16#00#; --device geometry definition CFI_array(16#27#) := 16#15#; -- 16Mb CFI_array(16#28#) := 16#02#; CFI_array(16#29#) := 16#02#; CFI_array(16#2A#) := 16#00#; CFI_array(16#2B#) := 16#00#; CFI_array(16#2C#) := 16#02#; CFI_array(16#2D#) := 16#00#; CFI_array(16#2E#) := 16#00#; CFI_array(16#2F#) := 16#40#; CFI_array(16#30#) := 16#00#; CFI_array(16#31#) := 16#01#; CFI_array(16#32#) := 16#00#; CFI_array(16#33#) := 16#20#; CFI_array(16#34#) := 16#00#; CFI_array(16#35#) := 16#00#; CFI_array(16#36#) := 16#00#; CFI_array(16#37#) := 16#80#; CFI_array(16#38#) := 16#00#; CFI_array(16#39#) := 16#1E#;--16Mb CFI_array(16#3A#) := 16#00#; CFI_array(16#3B#) := 16#00#; CFI_array(16#3C#) := 16#01#; --primary vendor-specific extended query CFI_array(16#40#) := 16#50#; CFI_array(16#41#) := 16#52#; CFI_array(16#42#) := 16#49#; CFI_array(16#43#) := 16#31#; CFI_array(16#44#) := 16#33#; CFI_array(16#45#) := 16#0C#; CFI_array(16#46#) := 16#02#; CFI_array(16#47#) := 16#01#; CFI_array(16#48#) := 16#01#; CFI_array(16#49#) := 16#04#; CFI_array(16#4A#) := 16#00#; CFI_array(16#4B#) := 16#00#; CFI_array(16#4C#) := 16#00#; CFI_array(16#4D#) := 16#04#; CFI_array(16#4E#) := 16#00#; IF TimingModel(10) = 'T' THEN CFI_array(16#4F#) := 16#03#; ELSIF TimingModel(10) = 'B' THEN CFI_array(16#4F#) := 16#02#; END IF; CFI_array(16#50#) := 16#00#; END IF; END PROCESS Functional; WP_CTRL: PROCESS(WPNeg) VARIABLE Sec_Prot0_reg : std_logic := '0'; VARIABLE Sec_Prot1_reg : std_logic := '0'; BEGIN --Hardware Write Protection IF falling_edge(WPNeg) THEN Sec_Prot1_reg := SubSec_Prot(vs*SubSecNum) ; Sec_Prot0_reg := SubSec_Prot(vs*(SubSecNum-2)+1); SubSec_Prot(vs*SubSecNum) := '1'; SubSec_Prot(vs*(SubSecNum-2)+1) := '1'; ELSIF rising_edge(WPNeg) THEN SubSec_Prot(vs*SubSecNum) := Sec_Prot1_reg ; SubSec_Prot(vs*(SubSecNum-2)+1) := Sec_Prot0_reg ; END IF; END PROCESS WP_CTRL; --------------------------------------------------------------------------- ---- File Read Section - Preload Control --------------------------------------------------------------------------- MemPreload : PROCESS -- text file input variables FILE mem_file : text is mem_file_name; FILE prot_file : text is prot_file_name; FILE secsi_file : text is secsi_file_name; VARIABLE SS_ind : NATURAL RANGE 0 TO SubSecNum:= 0; VARIABLE ind : NATURAL RANGE 0 TO MemSize:= 0; VARIABLE ind_sect : NATURAL RANGE 0 TO SecNum:= 0; VARIABLE ind_addr : NATURAL RANGE 0 TO SecSize:= 0; VARIABLE buf : line; BEGIN WAIT ON VarSect; IF (mem_file_name /= "none" AND UserPreload ) THEN ind := 0; Mem := (OTHERS => (OTHERS => MaxData)); WHILE (not ENDFILE (mem_file)) LOOP READLINE (mem_file, buf); IF buf(1) = '/' THEN --comment NEXT; ELSIF buf(1) = '@' THEN --address ind := h(buf(2 to 7)); ELSE IF ind <= MemSize THEN RestoreSectAddr(ind, ind_sect, ind_addr); Mem(ind_sect)(ind_addr) := h(buf(1 to 2)); END IF; IF ind < MemSize THEN ind := ind + 1; END IF; END IF; END LOOP; END IF; IF (prot_file_name /= "none" AND UserPreload) THEN ind := 0; FactoryProt <= '0'; SS_ind := 0; Sec_Prot := (OTHERS => '0'); SubSec_Prot := (OTHERS => '0'); WHILE (not ENDFILE (prot_file)) LOOP READLINE (prot_file, buf); IF buf(1) = '/' THEN --comment NEXT; ELSIF buf(1) = '@' THEN --address ind := h(buf(2 to 3)); ELSE IF (buf(1) = '1') THEN IF ind > (SecNum + SubSecNum) THEN FactoryProt <= '1'; ELSIF (ind >= VarSect) THEN IF (ind <= VarSect + SubSecNum) THEN SS_ind := ind - VarSect; SubSec_Prot(SS_ind) := '1'; Sec_Prot(VarSect) := '0'; ELSE Sec_Prot(ind - SubSecNum) := '1'; END IF; ELSE Sec_Prot(ind) := '1'; END IF; END IF; IF ind <= (SubSecNum + secNum) THEN ind := ind + 1; END IF; END IF; END LOOP; END IF; -- Secure Silicon Sector Region preload IF (SecSi_file_name /= "none" AND UserPreload ) THEN SecSi := (OTHERS => MaxData); ind := 0; WHILE (not ENDFILE (SecSi_file)) LOOP READLINE (SecSi_file, buf); IF buf(1) = '/' THEN NEXT; ELSIF buf(1) = '@' THEN ind := h(buf(2 TO 3)); ELSE IF ind <= SecSiSize THEN SecSi(ind) := h(buf(1 TO 2)); ind := ind + 1; END IF; END IF; END LOOP; END IF; END PROCESS MemPreload; DOutPassThrough : PROCESS(DOut_zd) VARIABLE ValidData : std_logic_vector(15 downto 0); VARIABLE CEDQ_t : TIME; VARIABLE OEDQ_t : TIME; VARIABLE ADDRDQ_t : TIME; BEGIN IF DOut_zd(0) /= 'Z' THEN OPENLATCH := TRUE; CEDQ_t := -CENeg'LAST_EVENT + tpd_CENeg_DQ0(trz0); OEDQ_t := -OENeg'LAST_EVENT + tpd_OENeg_DQ0(trz0); ADDRDQ_t := -A'LAST_EVENT + tpd_A0_DQ0(tr01);-- IF ( BYTENeg = '0' ) AND (DIn(15)'LAST_EVENT < A'LAST_EVENT) THEN ADDRDQ_t := -DIn(15)'LAST_EVENT + tpd_A0_DQ0(tr01);-- END IF; FROMOE := (OEDQ_t >= CEDQ_t) AND (OEDQ_t > 0 ns); FROMCE := (CEDQ_t > OEDQ_t) AND (CEDQ_t > 0 ns); IF BYTENeg = '0' THEN ValidData := "ZZZZZZZZXXXXXXXX"; ELSE ValidData := "XXXXXXXXXXXXXXXX"; END IF; IF ((ADDRDQ_t > 0 ns) AND (((ADDRDQ_t > CEDQ_t) AND FROMCE) OR ((ADDRDQ_t > OEDQ_t) AND FROMOE))) THEN DOut_Pass <= ValidData, DOut_zd AFTER ADDRDQ_t; ELSE DOut_Pass <= DOut_zd; END IF; ELSE CEDQ_t := -CENeg'LAST_EVENT + tpd_CENeg_DQ0(tr0z); OEDQ_t := -OENeg'LAST_EVENT + tpd_OENeg_DQ0(tr0z); FROMOE := (OEDQ_t <= CEDQ_t) AND (OEDQ_t > 0 ns); FROMCE := (CEDQ_t < OEDQ_t) AND (CEDQ_t > 0 ns); DOut_Pass <= DOut_zd; OPENLATCH := FALSE; DOut_Pass <= DOut_zd; END IF; END PROCESS DOutPassThrough; ----------------------------------------------------------------------- -- Path Delay Section ----------------------------------------------------------------------- RY_OUT: PROCESS(RY_zd) VARIABLE RY_GlitchData : VitalGlitchDataType; VARIABLE RY_DATA : std_logic; BEGIN IF RY_zd = '0' THEN RY_DATA := '0'; ELSE RY_DATA := 'Z'; END IF; VitalPathDelay01( OutSignal => RY, OutSignalName => "RY/BY#", OutTemp => RY_DATA, Mode => VitalTransport, GlitchData => RY_GlitchData, Paths => ( 0 => (InputChangeTime => CENeg'LAST_EVENT, PathDelay => tpd_WENeg_RY, PathCondition => TRUE), 1 => (InputChangeTime => WENeg'LAST_EVENT, PathDelay => tpd_WENeg_RY, PathCondition => TRUE), 2 => (InputChangeTime => READY_out'LAST_EVENT, PathDelay => VitalZeroDelay01, PathCondition => EDONE = '1'), 3 => (InputChangeTime => EDONE'LAST_EVENT, PathDelay => VitalZeroDelay01, PathCondition => EDONE = '1'), 4 => (InputChangeTime => PDONE'LAST_EVENT, PathDelay => VitalZeroDelay01, PathCondition => PDONE = '1') ) ); END PROCESS RY_Out; --------------------------------------------------------------------------- -- Path Delay Section for DOut signal --------------------------------------------------------------------------- D_Out_PathDelay_Gen : FOR i IN 0 TO 7 GENERATE PROCESS(DOut_Pass(i)) VARIABLE D0_GlitchData : VitalGlitchDataType; BEGIN VitalPathDelay01Z( OutSignal => DOut(i), OutSignalName => "DOut", OutTemp => DOut_Pass(i), GlitchData => D0_GlitchData, Mode => VitalTransport, Paths => ( 0 => (InputChangeTime => CENeg'LAST_EVENT, PathDelay => tpd_CENeg_DQ0, PathCondition => (NOT OPENLATCH AND NOT FROMOE) OR (OPENLATCH AND FROMCE)), 1 => (InputChangeTime => OENeg'LAST_EVENT, PathDelay => tpd_OENeg_DQ0, PathCondition => (NOT OPENLATCH AND NOT FROMCE) OR (OPENLATCH AND FROMOE)), 2 => (InputChangeTime => A'LAST_EVENT, PathDelay => VitalExtendToFillDelay(tpd_A0_DQ0), PathCondition => NOT FROMOE AND NOT FROMCE), 3 => (InputChangeTime => Din(15)'LAST_EVENT, PathDelay => VitalExtendToFillDelay(tpd_A0_DQ0), PathCondition => BYTENeg = '0' AND DOut_pass(i) /= 'X'), 4 => (InputChangeTime => BYTENeg'LAST_EVENT, PathDelay => VitalExtendToFillDelay(tpd_BYTENeg_DQ15), PathCondition => BYTENeg = '1'), 5 => (InputChangeTime => RESETNeg'LAST_EVENT, PathDelay => tpd_RESETNeg_DQ0, PathCondition => RESETNeg='0') ) ); END PROCESS; END GENERATE D_Out_PathDelay_Gen; --------------------------------------------------------------------------- -- Path Delay Section for DOut signal --------------------------------------------------------------------------- D_Out_15_7_PathDelay_Gen : FOR i IN 8 TO 15 GENERATE PROCESS(DOut_Pass(i)) VARIABLE D0_GlitchData : VitalGlitchDataType; BEGIN VitalPathDelay01Z( OutSignal => DOut(i), OutSignalName => "DOut", OutTemp => DOut_Pass(i), GlitchData => D0_GlitchData, Mode => VitalTransport, Paths => ( 0 => (InputChangeTime => CENeg'LAST_EVENT, PathDelay => tpd_CENeg_DQ0, PathCondition => (NOT OPENLATCH AND NOT FROMOE) OR (OPENLATCH AND FROMCE)), 1 => (InputChangeTime => OENeg'LAST_EVENT, PathDelay => tpd_OENeg_DQ0, PathCondition => (NOT OPENLATCH AND NOT FROMCE) OR (OPENLATCH AND FROMOE)), 2 => (InputChangeTime => A'LAST_EVENT, PathDelay => VitalExtendToFillDelay(tpd_A0_DQ0), PathCondition => NOT FROMOE AND NOT FROMCE), 3 => (InputChangeTime => Din(15)'LAST_EVENT, PathDelay => VitalExtendToFillDelay(tpd_A0_DQ0), PathCondition => BYTENeg = '0' AND DOut_pass(i) /= 'X'), 4 => (InputChangeTime => BYTENeg'LAST_EVENT, PathDelay => VitalExtendToFillDelay(tpd_BYTENeg_DQ15), PathCondition => BYTENeg = '1'), 5 => (InputChangeTime => BYTENeg'LAST_EVENT, PathDelay => VitalExtendToFillDelay(tpd_BYTENeg_DQ15), PathCondition => BYTENeg = '0'), 6 => (InputChangeTime => RESETNeg'LAST_EVENT, PathDelay => tpd_RESETNeg_DQ0, PathCondition => RESETNeg='0') ) ); END PROCESS; END GENERATE D_Out_15_7_PathDelay_Gen; END BLOCK behavior; END vhdl_behavioral;