flashop_intel160_.c

ADAM2 sources (modified by Oleg)

/*-----------------------------------------------------------------------------*/
/*                                                                             */
/*   Copyright (C) 1999-2003 by Texas Instruments, Inc.  All rights reserved.  */
/*   Copyright (C) 2001-2003 Telogy Networks.	    						   */
/*                                                                             */
/*   NOTE: THIS VERSION OF CODE IS MAINTAINED BY TELOGY NETWORKS AND NOT TI!   */
/*                                                                             */
/*     IMPORTANT - READ CAREFULLY BEFORE PROCEEDING TO USE SOFTWARE.           */
/*                                                                             */
/*  This document is displayed for you to read prior to using the software     */
/*  and documentation.  By using the software and documentation, or opening    */
/*  the sealed packet containing the software, or proceeding to download the   */
/*  software from a Bulletin Board System(BBS) or a WEB Server, you agree to   */
/*  abide by the following Texas Instruments License Agreement. If you choose  */ 
/*  not to agree with these provisions, promptly discontinue use of the        */
/*  software and documentation and return the material to the place you        */
/*  obtained it.                                                               */
/*                                                                             */
/*                               *** NOTE ***                                  */
/*                                                                             */
/*  The licensed materials contain MIPS Technologies, Inc. confidential        */
/*  information which is protected by the appropriate MIPS Technologies, Inc.  */
/*  license agreement.  It is your responsibility to comply with these         */
/*  licenses.                                                                  */
/*                                                                             */
/*                   Texas Instruments License Agreement                       */
/*                                                                             */
/*  1. License - Texas Instruments (hereinafter "TI"), grants you a license    */
/*  to use the software program and documentation in this package ("Licensed   */
/*  Materials") for Texas Instruments broadband products.                      */
/*                                                                             */
/*  2. Restrictions - You may not reverse-assemble or reverse-compile the      */
/*  Licensed Materials provided in object code or executable format.  You may  */
/*  not sublicense, transfer, assign, rent, or lease the Licensed Materials    */
/*  or this Agreement without written permission from TI.                      */
/*                                                                             */
/*  3. Copyright - The Licensed Materials are copyrighted. Accordingly, you    */
/*  may either make one copy of the Licensed Materials for backup and/or       */
/*  archival purposes or copy the Licensed Materials to another medium and     */
/*  keep the original Licensed Materials for backup and/or archival purposes.  */
/*                                                                             */
/*  4. Runtime and Applications Software - You may create modified or          */
/*  derivative programs of software identified as Runtime Libraries or         */
/*  Applications Software, which, in source code form, remain subject to this  */
/*  Agreement, but object code versions of such derivative programs are not    */
/*  subject to this Agreement.                                                 */
/*                                                                             */
/*  5. Warranty - TI warrants the media to be free from defects in material    */
/*  and workmanship and that the software will substantially conform to the    */
/*  related documentation for a period of ninety (90) days after the date of   */
/*  your purchase. TI does not warrant that the Licensed Materials will be     */
/*  free from error or will meet your specific requirements.                   */
/*                                                                             */
/*  6. Remedies - If you find defects in the media or that the software does   */
/*  not conform to the enclosed documentation, you may return the Licensed     */
/*  Materials along with the purchase receipt, postage prepaid, to the         */
/*  following address within the warranty period and receive a refund.         */
/*                                                                             */
/*  TEXAS INSTRUMENTS                                                          */
/*  Application Specific Products, MS 8650                                     */
/*  c/o ADAM2 Application Manager                                              */
/*  12500 TI Boulevard                                                         */
/*  Dallas, TX 75243  - U.S.A.                                                 */
/*                                                                             */
/*  7. Limitations - TI makes no warranty or condition, either expressed or    */
/*  implied, including, but not limited to, any implied warranties of          */
/*  merchantability and fitness for a particular purpose, regarding the        */
/*  licensed materials.                                                        */
/*                                                                             */
/*  Neither TI nor any applicable licensor will be liable for any indirect,    */
/*  incidental or consequential damages, including but not limited to loss of  */
/*  profits.                                                                   */
/*                                                                             */
/*  8. Term - The license is effective until terminated.   You may terminate   */
/*  it at any other time by destroying the program together with all copies,   */
/*  modifications and merged portions in any form. It also will terminate if   */
/*  you fail to comply with any term or condition of this Agreement.           */
/*                                                                             */
/*  9. Export Control - The re-export of United States origin software and     */
/*  documentation is subject to the U.S. Export Administration Regulations or  */
/*  your equivalent local regulations. Compliance with such regulations is     */
/*  your responsibility.                                                       */
/*                                                                             */
/*                         *** IMPORTANT NOTICE ***                            */
/*                                                                             */
/*  Texas Instruments (TI) reserves the right to make changes to or to         */
/*  discontinue any semiconductor product or service identified in this        */
/*  publication without notice. TI advises its customers to obtain the latest  */
/*  version of the relevant information to verify, before placing orders,      */
/*  that the information being relied upon is current.                         */
/*                                                                             */
/*  TI warrants performance of its semiconductor products and related          */
/*  software to current specifications in accordance with TI's standard        */
/*  warranty. Testing and other quality control techniques are utilized to     */
/*  the extent TI deems necessary to support this warranty. Unless mandated    */
/*  by government requirements, specific testing of all parameters of each     */
/*  device is not necessarily performed.                                       */
/*                                                                             */
/*  Please be aware that Texas Instruments products are not intended for use   */
/*  in life-support appliances, devices, or systems. Use of a TI product in    */
/*  such applications without the written approval of the appropriate TI       */
/*  officer is prohibited. Certain applications using semiconductor devices    */
/*  may involve potential risks of injury, property damage, or loss of life.   */
/*  In order to minimize these risks, adequate design and operating            */
/*  safeguards should be provided by the customer to minimize inherent or      */
/*  procedural hazards. Inclusion of TI products in such applications is       */
/*  understood to be fully at the risk of the customer using TI devices or     */
/*  systems.                                                                   */
/*                                                                             */
/*  TI assumes no liability for TI applications assistance, customer product   */
/*  design, software performance, or infringement of patents or services       */
/*  described herein. Nor does TI warrant or represent that license, either    */
/*  expressed or implied, is granted under any patent right, copyright, mask   */
/*  work right, or other intellectual property right of TI covering or         */
/*  relating to any combination, machine, or process in which such             */
/*  semiconductor products or services might be or are used.                   */
/*                                                                             */
/*  All company and/or product names are trademarks and/or registered          */
/*  trademarks of their respective manaufacturers.                             */
/*                                                                             */
/*-----------------------------------------------------------------------------*/
/*                                                                             */
/*  Now that you've gotten here you are probably serious about understanding   */
/*  the way Adam2 uses the flash. All flash operations are contained in this   */
/*  module. There are 7 interfaces to this module. FWBGetBlockSize, FWBErase,  */
/*  FWBOpen, FWBWriteByte, and FWBClose, FWBUnLock, FWBLock.                   */                                                                             
/*  FWBGetBlockSize(base);       - returns the Flash Block size for the        */
/*                                 requested region so that all users of the   */
/*                                 flash understand the blocking factor.       */
/*                                                                             */
/*  FWBErase(base,size,verbose); - Erases from base address of size in blocks. */
/*                                                                             */
/*  FWBOpen(Base);               - Will always be called prior to FWBWriteByte,*/
/*                                 and is responsible for unlocking the region */
/*                                 and preparing for flash writes.             */
/*                                                                             */
/*  FWBWriteByte(address,data);  - Is called to write data to the flash        */
/*                                 address, remember that a FWBClose will be   */
/*                                 called prior to any use of the written data.*/
/*                                                                             */
/*  FWBClose()                   - Will complete any pending flash writes to a */
/*                                 region, and lock the flash.                 */
/*                                                                             */
/*  FWBUnLock(base,size)         - Unlocks the blocks specified                */
/*                                                                             */
/*  FWBLock(base,size)           - Lock the blocks specified                   */
/*                                                                             */
/*  The use of FWBOpen, FWBWriteByte, and FWBClose allows for efficient block  */
/*  writes. Remember it is possible to only get One FWBWriteByte in-between a  */
/*  FWBOpen and a FWBClose.                                                    */
/*                                                                             */
/*  During the Boot process the FWBGetBlockSize is called. This block can be   */
/*  called at any time, and returns the size of the flash blocks for the       */
/*  requested region. It is possible to have different size flash blocks in    */
/*  different memory regions.                                                  */
/*                                                                             */
/*  Any time the Kernel wishes to erase a block of flash, it will call the     */
/*  FWBErase routine. The routine is assumed to erase in blocks. That is       */
/*  FWBErase(CS0_BASE,1,0); will erase the block at CS0_BASE. The same can be  */
/*  said for FWBErase(CS0_BASE,FWBGetBlockSize(CS0_BASE),0); So that           */
/*  FWBErase(CS0_BASE,FWBGetBlockSize(CS0_BASE)+1,0); and                      */
/*  FWBErase(CS0_BASE+1,FWBGetBlockSize(CS0_BASE),0); actually erases 2 blocks.*/
/*                                                                             */
/*  It is important to not that the FWBXxxxx routines must always leave the    */
/*  flash in a read mode. Failure to do this will result in a system hang.     */
/*  sys_printf () is also unuasable whilest the flash in not in a read mode    */
/*                                                                             */
/*  And last but not least, all FWB... routines return TRUE if successfull and */
/*  FALSE if unsuccessfull                                                     */
/*                                                                             */
/*-----------------------------------------------------------------------------*/
#include "_stdio.h"
#include "flashop.h"
#include "hw.h"

void _FlashErrorOut(char *str,int sts);
int _FWBWriteBlock(void);
int _FlashOperationComplete(bit32u adr, bit16u dat, int timeoutloops);

#define FLASH_MAX_WAIT 		125
#define MAXBUF 				2

/* The following are for the Intel 28FXXXC3 Flash Chips */
#define FLASH_READ_CMD		0x00FF
#define FLASH_READ_CFG_CMD	0x0090
#define FLASH_READ_STAT_CMD	0x0070
#define FLASH_ERROR_MASK	0x003A
#define FLASH_WRITE_CMD		0x0040
#define FLASH_CLEAR_SR_CMD	0x0050
#define FLASH_ERASE_SECTOR	0x0020 /* CMD 1 for erasing a sector */
#define FLASH_LOCK_CMD		0x0060
#define FLASH_UNLOCK		0x00D0
#define FLASH_LOCK			0x0001
#define FLASH_COMMIT_CMD	0x00D0
#define FLASH_WSMS			0x0080 /* Write state machine state */

bit32u FWBBaseAdr, FWBBaseUnLockAdr;
int    FWBvalid;
int    FWBopen=FALSE;
char   FWBwdata[MAXBUF];

int FWBValid(bit32u base)
{
	base&=0x1fffffff;
	base|=0xa0000000;

	if (base < (CS0_BASE + MIN_BOOT_BLOCK_SIZE))		
		return(0);
	
	if (base >= (CS0_BASE + CS0_SIZE))
		return(0);

	return (1);
}

int FWBUnLock(bit32u adr,bit32 size)
{
	return(TRUE);
}

/* Returns TRUE for success and FALSE for failure */