dfe64e2c89
This patch is essentially an update of u-boot MTD subsystem to the state of Linux-3.7.1 with exclusion of some bits: - the update is concentrated on NAND, no onenand or CFI/NOR/SPI flashes interfaces are updated EXCEPT for API changes. - new large NAND chips support is there, though some updates have got in Linux-3.8.-rc1, (which will follow on top of this patch). To produce this update I used tag v3.7.1 of linux-stable repository. The update was made using application of relevant patches, with changes relevant to U-Boot-only stuff sticked together to keep bisectability. Then all changes were grouped together to this patch. Signed-off-by: Sergey Lapin <slapin@ossfans.org> [scottwood@freescale.com: some eccstrength and build fixes] Signed-off-by: Scott Wood <scottwood@freescale.com>
166 lines
4.1 KiB
C
166 lines
4.1 KiB
C
/*
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* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
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*
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* Copyright (C) 2002-2007 Aleph One Ltd.
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* for Toby Churchill Ltd and Brightstar Engineering
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*
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* Created by Charles Manning <charles@aleph1.co.uk>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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/* XXX U-BOOT XXX */
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#include <common.h>
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#include "yportenv.h"
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#include "yaffs_mtdif.h"
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#include "linux/mtd/mtd.h"
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#include "linux/types.h"
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#include "linux/time.h"
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#include "linux/mtd/nand.h"
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static inline void translate_spare2oob(const struct yaffs_spare *spare, u8 *oob)
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{
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oob[0] = spare->tb0;
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oob[1] = spare->tb1;
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oob[2] = spare->tb2;
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oob[3] = spare->tb3;
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oob[4] = spare->tb4;
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oob[5] = spare->tb5 & 0x3f;
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oob[5] |= spare->block_status == 'Y' ? 0 : 0x80;
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oob[5] |= spare->page_status == 0 ? 0 : 0x40;
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oob[6] = spare->tb6;
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oob[7] = spare->tb7;
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}
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static inline void translate_oob2spare(struct yaffs_spare *spare, u8 *oob)
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{
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struct yaffs_nand_spare *nspare = (struct yaffs_nand_spare *)spare;
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spare->tb0 = oob[0];
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spare->tb1 = oob[1];
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spare->tb2 = oob[2];
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spare->tb3 = oob[3];
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spare->tb4 = oob[4];
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spare->tb5 = oob[5] == 0xff ? 0xff : oob[5] & 0x3f;
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spare->block_status = oob[5] & 0x80 ? 0xff : 'Y';
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spare->page_status = oob[5] & 0x40 ? 0xff : 0;
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spare->ecc1[0] = spare->ecc1[1] = spare->ecc1[2] = 0xff;
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spare->tb6 = oob[6];
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spare->tb7 = oob[7];
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spare->ecc2[0] = spare->ecc2[1] = spare->ecc2[2] = 0xff;
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nspare->eccres1 = nspare->eccres2 = 0; /* FIXME */
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}
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int nandmtd_WriteChunkToNAND(struct yaffs_dev *dev, int chunkInNAND,
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const u8 *data, const struct yaffs_spare *spare)
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{
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struct mtd_info *mtd = (struct mtd_info *)(dev->driver_context);
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struct mtd_oob_ops ops;
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size_t dummy;
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int retval = 0;
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loff_t addr = ((loff_t) chunkInNAND) * dev->data_bytes_per_chunk;
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u8 spareAsBytes[8]; /* OOB */
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if (data && !spare)
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retval = mtd_write(mtd, addr, dev->data_bytes_per_chunk,
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&dummy, data);
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else if (spare) {
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if (dev->param.use_nand_ecc) {
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translate_spare2oob(spare, spareAsBytes);
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ops.mode = MTD_OPS_AUTO_OOB;
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ops.ooblen = 8; /* temp hack */
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} else {
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ops.mode = MTD_OPS_RAW;
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ops.ooblen = YAFFS_BYTES_PER_SPARE;
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}
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ops.len = data ? dev->data_bytes_per_chunk : ops.ooblen;
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ops.datbuf = (u8 *)data;
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ops.ooboffs = 0;
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ops.oobbuf = spareAsBytes;
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retval = mtd_write_oob(mtd, addr, &ops);
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}
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if (retval == 0)
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return YAFFS_OK;
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else
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return YAFFS_FAIL;
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}
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int nandmtd_ReadChunkFromNAND(struct yaffs_dev *dev, int chunkInNAND, u8 *data,
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struct yaffs_spare *spare)
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{
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struct mtd_info *mtd = (struct mtd_info *)(dev->driver_context);
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struct mtd_oob_ops ops;
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size_t dummy;
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int retval = 0;
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loff_t addr = ((loff_t) chunkInNAND) * dev->data_bytes_per_chunk;
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u8 spareAsBytes[8]; /* OOB */
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if (data && !spare)
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retval = mtd_read(mtd, addr, dev->data_bytes_per_chunk,
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&dummy, data);
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else if (spare) {
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if (dev->param.use_nand_ecc) {
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ops.mode = MTD_OPS_AUTO_OOB;
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ops.ooblen = 8; /* temp hack */
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} else {
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ops.mode = MTD_OPS_RAW;
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ops.ooblen = YAFFS_BYTES_PER_SPARE;
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}
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ops.len = data ? dev->data_bytes_per_chunk : ops.ooblen;
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ops.datbuf = data;
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ops.ooboffs = 0;
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ops.oobbuf = spareAsBytes;
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retval = mtd_read_oob(mtd, addr, &ops);
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if (dev->param.use_nand_ecc)
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translate_oob2spare(spare, spareAsBytes);
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}
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if (retval == 0)
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return YAFFS_OK;
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else
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return YAFFS_FAIL;
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}
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int nandmtd_EraseBlockInNAND(struct yaffs_dev *dev, int blockNumber)
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{
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struct mtd_info *mtd = (struct mtd_info *)(dev->driver_context);
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__u32 addr =
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((loff_t) blockNumber) * dev->data_bytes_per_chunk
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* dev->param.chunks_per_block;
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struct erase_info ei;
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int retval = 0;
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ei.mtd = mtd;
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ei.addr = addr;
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ei.len = dev->data_bytes_per_chunk * dev->param.chunks_per_block;
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ei.time = 1000;
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ei.retries = 2;
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ei.callback = NULL;
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ei.priv = (u_long) dev;
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/* Todo finish off the ei if required */
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retval = mtd_erase(mtd, &ei);
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if (retval == 0)
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return YAFFS_OK;
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else
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return YAFFS_FAIL;
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}
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int nandmtd_InitialiseNAND(struct yaffs_dev *dev)
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{
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return YAFFS_OK;
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}
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