; --------------------------------------------------------------------------------
; @Title: AM3715 NAND FLASH Programming Script (with Hamming ECC)
; @Description:
;   NAND FLASH(MT29F4G16ABA) is connected to CS0
;   MISTRAL OMAP EVM Board
;
;   Internal SRAM    : 0x40200000
;   Command Register : 0x6E00007C  
;   Address Register : 0x6E000080
;   Data Register    : 0x6E000084
;
; @Author: jjeong
; @Chip: AM3715
; @Keywords: NAND
; @Copyright: (C) 1989-2022 Lauterbach GmbH, licensed for use with TRACE32(R) only
; --------------------------------------------------------------------------------
; $Id: am3715eccham-nand2g16.cmm 10516 2022-02-02 11:39:30Z bschroefel $

LOCAL &arg1
ENTRY &arg1
&arg1=STRing.UPpeR("&arg1")  // for example "PREPAREONLY"


 
 PRINT "initializing..."
 SYStem.RESet
 SYStem.CPU AM3715
 SYStem.JtagClock 1Mhz          ; start with a fix JTAG clock,
                                ; otherwise every second system.up fails with an RTCK error
 SYStem.Option DACR ON          ; give Debugger global write permissions
 SYStem.Option ResBreak OFF     ; hardware dependent (see manual)
 SYStem.Option WaitReset ON     ; hardware dependent (see manual)
 SYStem.Up
 SYStem.JtagClock RTCK

PER.Set.simple C15:0x1 %Long  (Data.Long(C15:0x1)&~(0x1005))   ; disable MMU and cache

GOSUB disable_watchdog

; --------------------------------------------------------------------------------
; Initialize General Purpose Memory Controller
; --------------------------------------------------------------------------------

; GPMC_SYSCONFIG
Data.Set 0x6E000010 %LE %Long 0x00000010

; GPMC_IRQENABLE
Data.Set 0x6E00001C %LE %Long 0x00000000

; GPMC_TIMEOUT_CONTROL
Data.Set 0x6E000040 %LE %Long 0x00000000

; GPMC_CONFIG
Data.Set 0x6E000050 %LE %Long 0x00000011

; --------------------------------------------------------------------------------
; Initialize CS0
; --------------------------------------------------------------------------------
; GPMC_CONFIG1_0
;    WRAPBURST		not supported
;    READMULTIPLE	single
;    READTYPE		asynchronous
;    WRITEMULTIPLE	single
;    WRITETYPE		asynchronous
;    CLKACTIVATIONTIME	at start access
;    ATTACHEDDEVPAGELEN	4 words
;    WAITREADMONITORING	not monitored
;    WAITWRITEMONITOR	not monitored
;    WAITMONITORTIME	with valid data
;    WAITPINSELECT	WAIT0
;    DEVICESIZE		16 bit
;    DEVICETYPE		NAND flash like
;    MUXADDDATA		disabled
;    TIMEPARAGRANULARIT	x1 latencies
;    GPMCFCLKDIVIDER	1

Data.Set 0x6E000060 %LE %Long 0x00001800   ;16bit
;DATA.SET 0x6E000060 %LE %LONG 0x00000800  ;8bit

; GPMC_CONFIG2_0
Data.Set 0x6E000064 %LE %Long 0x00060600

; GPMC_CONFIG3_0
Data.Set 0x6E000068 %LE %Long 0x00060401

; GPMC_CONFIG4_0
Data.Set 0x6E00006C %LE %Long 0x05010801

; GPMC_CONFIG5_0
Data.Set 0x6E000070 %LE %Long 0x00080909

; GPMC_CONFIG6_0
Data.Set 0x6E000074 %LE %Long 0x1F0F0A80

; GPMC_CONFIG7_0
Data.Set 0x6E000078 %LE %Long 0x00000F48

; --------------------------------------------------------------------------------
; Flash programming
; --------------------------------------------------------------------------------

Data.Set   0x6E0001F8 %LE %Long 0x101     ;Enable  HW-ECC engine, GPMI_ECC_CONTROL
;DATA.SET  0x6E0001F8 %LE %LONG 0x0       ;Disable HW-ECC engine, GPMI_ECC_CONFIG

; the ecc result is same when I access 16bit or 8bit 
Data.Set   0x6E0001F4 %LE %Long 0x006B1   ; Hamming ECC

  FLASHFILE.RESet

//FLASHFILE.config <Cmd_reg>   <Addr_reg>  <Data_reg>
  FLASHFILE.CONFIG 0x6E00007C  0x6E000080  0x6E000084

//FLASHFILE.target <Code_range> <Data_range> <Algorithm file>
  FLASHFILE.TARGET 0x40200000++0x1FFF 0x40202000++0x1FFF ~~/demo/arm/flash/word/nand2g16_tigpmcham.bin /KEEP

//Read FLASH Manufacture and Device ID
  FLASHFILE.GETID

//End of the test prepareonly
IF "&arg1"=="PREPAREONLY"
ENDDO


//Open NAND FLASH Dump window
  FLASHFILE.DUMP 0x0

//Check bad blocks into area window
  ;FLASHFILE.GETBADBLOCK 0x0--0xFFFFFF

//Erase NAND
  ;FLASHFILE.ERASE 0x0--0xFFFFFF 

//Program NAND
  ;FLASHFILE.LOAD  * 0x0  /WriteBadBlocks
  

ENDDO

disable_watchdog:
   ; Enable Interface Clock
   Data.Set 0x48004C10 %Long 0x20
  
   ; Enable functional clock
   Data.Set 0x48004C00 %Long 0x20
  
   ; Check that module is IDLE
   WAIT (Data.Long(SD:0x48004C20)&0x20)==0 
    
   ; Disable watchdog timer
   Data.Set SD:0x48314048 %LE %Long 0x0000AAAA
   WAIT (Data.Long(SD:0x48314034)&0x10)==0
  
   Data.Set SD:0x48314048 %LE %Long 0x00005555
   WAIT (Data.Long(SD:0x48314034)&0x10)==0
  
   ; Check if the watchdog timer is running
   IF (Data.Long(SD:0x48314048)!=0x00005555)
   (
     ; Disable Watchdog 2
     ; Wait until reset complete
     WAIT (Data.Long(SD:0x48314014)&0x01)!=0
  
     ; Disable 32Khz watchdog timer
     Data.Set 0x48314048 %Long 0x0000AAAA
  
     WAIT (Data.Long(SD:0x48314034)&0x10)==0
            
     ; Disable 32Khz watchdog timer
     Data.Set 0x48314048 %Long 0x00005555
    
     WAIT (Data.Long(SD:0x48314034)&0x10)==0 
   )

RETURN