280 lines
9.8 KiB
C
280 lines
9.8 KiB
C
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/*******************************************************************************
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Copyright (C) Marvell International Ltd. and its affiliates
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This software file (the "File") is owned and distributed by Marvell
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International Ltd. and/or its affiliates ("Marvell") under the following
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alternative licensing terms. Once you have made an election to distribute the
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File under one of the following license alternatives, please (i) delete this
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introductory statement regarding license alternatives, (ii) delete the two
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license alternatives that you have not elected to use and (iii) preserve the
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Marvell copyright notice above.
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********************************************************************************
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Marvell Commercial License Option
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If you received this File from Marvell and you have entered into a commercial
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license agreement (a "Commercial License") with Marvell, the File is licensed
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to you under the terms of the applicable Commercial License.
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********************************************************************************
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Marvell GPL License Option
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If you received this File from Marvell, you may opt to use, redistribute and/or
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modify this File in accordance with the terms and conditions of the General
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Public License Version 2, June 1991 (the "GPL License"), a copy of which is
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available along with the File in the license.txt file or by writing to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 or
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on the worldwide web at http://www.gnu.org/licenses/gpl.txt.
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THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE IMPLIED
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WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY
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DISCLAIMED. The GPL License provides additional details about this warranty
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disclaimer.
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********************************************************************************
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Marvell BSD License Option
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If you received this File from Marvell, you may opt to use, redistribute and/or
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modify this File under the following licensing terms.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Marvell nor the names of its contributors may be
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used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*******************************************************************************/
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#include "mvFlash.h"
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#ifdef MV_DEBUG
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#define DB(x) x
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#else
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#define DB(x)
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#endif
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static MV_BOOL amdFlashStsIsRdy(MV_FLASH_INFO *pFlash, MV_U32 offset,
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MV_U32 excepted);
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static MV_VOID amdFlashUnlock(MV_FLASH_INFO *pFlash);
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/*******************************************************************************
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* reset the flash
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*******************************************************************************/
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MV_VOID amdFlashReset(MV_FLASH_INFO *pFlash)
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{
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flashCmdSet(pFlash, 0, 0, AMD_CHIP_CMD_RST);
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return;
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}
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/*******************************************************************************
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* amdFlashSecErase - Erase a sector.
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*
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* DESCRIPTION:
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* Erase a Flash sector.
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*
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* INPUT:
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* secNum - sector Number.
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* pFlash - flash information.
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*
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* OUTPUT:
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* None
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*
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* RETURN:
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* MV_OK if program completed successfully,
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* MV_TIMEOUT if timeout reached,
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* MV_FAIL otherwise.
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*
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*******************************************************************************/
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MV_STATUS amdFlashSecErase(MV_FLASH_INFO *pFlash, MV_U32 secNum)
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{
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MV_U32 i;
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DB(mvOsPrintf("Flash: amdFlashSecErase\n"));
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/* erase sequence */
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amdFlashUnlock(pFlash);
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switch (pFlash->flashSpec.flashVen)
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{
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case AMD_MANUF:
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case STM_MANUF:
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flashCmdSet(pFlash, AMD_CHIP_ADDR_ERASE1, 0, AMD_CHIP_CMD_ERASE1);
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flashCmdSet(pFlash, AMD_CHIP_ADDR_ERASE2, 0, AMD_CHIP_CMD_ERASE2);
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flashCmdSet(pFlash, AMD_CHIP_ADDR_ERASE3, 0, AMD_CHIP_CMD_ERASE3);
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flashCmdSet(pFlash, 0, secNum, AMD_CHIP_CMD_ERASE4);
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break;
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case SST_MANUF:
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flashCmdSet(pFlash, SST_CHIP_ADDR_ERASE1, 0, AMD_CHIP_CMD_ERASE1);
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flashCmdSet(pFlash, SST_CHIP_ADDR_ERASE2, 0, AMD_CHIP_CMD_ERASE2);
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flashCmdSet(pFlash, SST_CHIP_ADDR_ERASE3, 0, AMD_CHIP_CMD_ERASE3);
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flashCmdSet(pFlash, 0, secNum, AMD_CHIP_CMD_ERASE4);
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break;
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}
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/* wait for erase to complete */
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for(i = 0; i < AMD_EARASE_MILI_TIMEOUT; i++)
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{
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mvOsDelay(1);
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if(MV_TRUE == amdFlashStsIsRdy(pFlash, mvFlashSecOffsGet(pFlash,secNum)
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+ mvFlashBaseAddrGet(pFlash), AMD_CHIP_STAT_DQ7_MASK))
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{
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DB(mvOsPrintf("Flash: amdFlashSecErase erase PASS !!\n"));
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return MV_OK;
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}
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}
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mvOsPrintf("Flash: ERROR amdFlashSecErase timeout \n");
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return MV_TIMEOUT;
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}
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/*******************************************************************************
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* amdFlashProg - Prog busWidth Bits into the address offest in the flash.
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*
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* DESCRIPTION:
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* This function writes busWidth data to a given flash offset.
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*
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* INPUT:
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* pFlash - Flash identifier structure (flash cockie).
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* offset - Offset from flash base address.
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* data - 32bit data to be written to flash.
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*
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* OUTPUT:
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* None.
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*
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* RETURN:
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* MV_OK if program completed successfully,
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* MV_TIMEOUT otherwise.
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*
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*******************************************************************************/
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MV_STATUS amdFlashProg(MV_FLASH_INFO *pFlash,MV_U32 offset, MV_U32 data)
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{
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MV_U32 i;
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MV_U32 statusExpectedData;
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DB(mvOsPrintf("Flash: amdFlashProg offset %x data %x\n",offset,data));
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/* write sequence */
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amdFlashUnlock(pFlash);
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switch (pFlash->flashSpec.flashVen)
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{
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case AMD_MANUF:
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case STM_MANUF:
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flashCmdSet(pFlash, AMD_CHIP_ADDR_PROG, 0, AMD_CHIP_CMD_PROG);
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break;
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case SST_MANUF:
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flashCmdSet(pFlash, SST_CHIP_ADDR_PROG, 0, AMD_CHIP_CMD_PROG);
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break;
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}
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flashBusWidthDataWr(pFlash, offset + mvFlashBaseAddrGet(pFlash), data);
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/* To check status we need to be sure that the data is in the same endianess
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of the status, the status is always little endian and the data is big endian
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, so we will convert the data to little endian before calling the amdFlashStsIsRdy
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function*/
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switch(pFlash->busWidth)
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{
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case 1:
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statusExpectedData = data;
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break;
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case 2:
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statusExpectedData = MV_16BIT_LE(data);
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break;
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case 4:
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statusExpectedData = MV_32BIT_LE(data);
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break;
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default:
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mvOsPrintf("%s ERROR: Bus Width %d Bytes isn't supported.\n",
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__FUNCTION__, pFlash->busWidth);
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return MV_TIMEOUT;
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}
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/* wait for write to complete */
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for(i = 0; i < AMD_PROG_TIMEOUT; i++)
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{
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if(MV_TRUE == amdFlashStsIsRdy(pFlash,offset +
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mvFlashBaseAddrGet(pFlash),
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statusExpectedData))
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{
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DB(mvOsPrintf("Flash: amdFlashProg prog PASS !!\n"));
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return MV_OK;
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}
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}
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mvOsPrintf("Flash: ERROR amdFlashSecErase timeout \n");
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return MV_TIMEOUT;
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}
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/*******************************************************************************
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* There are few ways to check if the AMD flash is busy or not:
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* 1) by checking DQ7 [and 5 - optional ]
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* 2) by checking toggle bit DQ7 (linux implementation)
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* here we used the first option:
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* after write/erase the flash push not(DQ7) until the opertion is completed.
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*******************************************************************************/
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static MV_BOOL amdFlashStsIsRdy(MV_FLASH_INFO *pFlash, MV_U32 addr,
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MV_U32 expected)
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{
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MV_U32 status;
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status = flashBusWidthRd(pFlash, addr);
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/* if DQ7 == Datum 7 */
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if((status & flashDataExt(pFlash, AMD_CHIP_STAT_DQ7_MASK )) ==
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(flashDataExt(pFlash,expected) &
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flashDataExt(pFlash, AMD_CHIP_STAT_DQ7_MASK)))
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{
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DB(mvOsPrintf("Flash: amdFlashStatusChk value is ready \n"));
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return MV_TRUE;
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}
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DB(mvOsPrintf("Flash: amdFlashStatusChk staus not ready \n"));
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return MV_FALSE;
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}
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/*******************************************************************************
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* Sequence for Unlocking the flash before accessing the flash.
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*******************************************************************************/
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static MV_VOID amdFlashUnlock(MV_FLASH_INFO *pFlash)
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{
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switch (pFlash->flashSpec.flashVen)
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{
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case AMD_MANUF:
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case STM_MANUF:
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flashCmdSet(pFlash, AMD_CHIP_UNLOCK_ADDR1, 0, AMD_CHIP_UNLOCK_CMD1);
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flashCmdSet(pFlash, AMD_CHIP_UNLOCK_ADDR2, 0, AMD_CHIP_UNLOCK_CMD2);
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break;
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case SST_MANUF:
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flashCmdSet(pFlash, SST_CHIP_UNLOCK_ADDR1, 0, AMD_CHIP_UNLOCK_CMD1);
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flashCmdSet(pFlash, SST_CHIP_UNLOCK_ADDR2, 0, AMD_CHIP_UNLOCK_CMD2);
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break;
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}
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return;
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}
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