/* * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. * * Copyright (C) 2002-2007 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning <charles@aleph1.co.uk> * * 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. */ /* XXX U-BOOT XXX */ #include <common.h> const char *yaffs_mtdif_c_version = "$Id: yaffs_mtdif.c,v 1.19 2007/02/14 01:09:06 wookey Exp $"; #include "yportenv.h" #include "yaffs_mtdif.h" #include "linux/mtd/mtd.h" #include "linux/types.h" #include "linux/time.h" #include "linux/mtd/nand.h" #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)) static struct nand_oobinfo yaffs_oobinfo = { .useecc = 1, .eccbytes = 6, .eccpos = {8, 9, 10, 13, 14, 15} }; static struct nand_oobinfo yaffs_noeccinfo = { .useecc = 0, }; #endif #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) static inline void translate_spare2oob(const yaffs_Spare *spare, __u8 *oob) { oob[0] = spare->tagByte0; oob[1] = spare->tagByte1; oob[2] = spare->tagByte2; oob[3] = spare->tagByte3; oob[4] = spare->tagByte4; oob[5] = spare->tagByte5 & 0x3f; oob[5] |= spare->blockStatus == 'Y' ? 0: 0x80; oob[5] |= spare->pageStatus == 0 ? 0: 0x40; oob[6] = spare->tagByte6; oob[7] = spare->tagByte7; } static inline void translate_oob2spare(yaffs_Spare *spare, __u8 *oob) { struct yaffs_NANDSpare *nspare = (struct yaffs_NANDSpare *)spare; spare->tagByte0 = oob[0]; spare->tagByte1 = oob[1]; spare->tagByte2 = oob[2]; spare->tagByte3 = oob[3]; spare->tagByte4 = oob[4]; spare->tagByte5 = oob[5] == 0xff ? 0xff : oob[5] & 0x3f; spare->blockStatus = oob[5] & 0x80 ? 0xff : 'Y'; spare->pageStatus = oob[5] & 0x40 ? 0xff : 0; spare->ecc1[0] = spare->ecc1[1] = spare->ecc1[2] = 0xff; spare->tagByte6 = oob[6]; spare->tagByte7 = oob[7]; spare->ecc2[0] = spare->ecc2[1] = spare->ecc2[2] = 0xff; nspare->eccres1 = nspare->eccres2 = 0; /* FIXME */ } #endif int nandmtd_WriteChunkToNAND(yaffs_Device * dev, int chunkInNAND, const __u8 * data, const yaffs_Spare * spare) { struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) struct mtd_oob_ops ops; #endif size_t dummy; int retval = 0; loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) __u8 spareAsBytes[8]; /* OOB */ if (data && !spare) retval = mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy, data); else if (spare) { if (dev->useNANDECC) { translate_spare2oob(spare, spareAsBytes); ops.mode = MTD_OOB_AUTO; ops.ooblen = 8; /* temp hack */ } else { ops.mode = MTD_OOB_RAW; ops.ooblen = YAFFS_BYTES_PER_SPARE; } ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen; ops.datbuf = (u8 *)data; ops.ooboffs = 0; ops.oobbuf = spareAsBytes; retval = mtd->write_oob(mtd, addr, &ops); } #else __u8 *spareAsBytes = (__u8 *) spare; if (data && spare) { if (dev->useNANDECC) retval = mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, &dummy, data, spareAsBytes, &yaffs_oobinfo); else retval = mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, &dummy, data, spareAsBytes, &yaffs_noeccinfo); } else { if (data) retval = mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy, data); if (spare) retval = mtd->write_oob(mtd, addr, YAFFS_BYTES_PER_SPARE, &dummy, spareAsBytes); } #endif if (retval == 0) return YAFFS_OK; else return YAFFS_FAIL; } int nandmtd_ReadChunkFromNAND(yaffs_Device * dev, int chunkInNAND, __u8 * data, yaffs_Spare * spare) { struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) struct mtd_oob_ops ops; #endif size_t dummy; int retval = 0; loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) __u8 spareAsBytes[8]; /* OOB */ if (data && !spare) retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy, data); else if (spare) { if (dev->useNANDECC) { ops.mode = MTD_OOB_AUTO; ops.ooblen = 8; /* temp hack */ } else { ops.mode = MTD_OOB_RAW; ops.ooblen = YAFFS_BYTES_PER_SPARE; } ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen; ops.datbuf = data; ops.ooboffs = 0; ops.oobbuf = spareAsBytes; retval = mtd->read_oob(mtd, addr, &ops); if (dev->useNANDECC) translate_oob2spare(spare, spareAsBytes); } #else __u8 *spareAsBytes = (__u8 *) spare; if (data && spare) { if (dev->useNANDECC) { /* Careful, this call adds 2 ints */ /* to the end of the spare data. Calling function */ /* should allocate enough memory for spare, */ /* i.e. [YAFFS_BYTES_PER_SPARE+2*sizeof(int)]. */ retval = mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, &dummy, data, spareAsBytes, &yaffs_oobinfo); } else { retval = mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, &dummy, data, spareAsBytes, &yaffs_noeccinfo); } } else { if (data) retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy, data); if (spare) retval = mtd->read_oob(mtd, addr, YAFFS_BYTES_PER_SPARE, &dummy, spareAsBytes); } #endif if (retval == 0) return YAFFS_OK; else return YAFFS_FAIL; } int nandmtd_EraseBlockInNAND(yaffs_Device * dev, int blockNumber) { struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); __u32 addr = ((loff_t) blockNumber) * dev->nDataBytesPerChunk * dev->nChunksPerBlock; struct erase_info ei; int retval = 0; ei.mtd = mtd; ei.addr = addr; ei.len = dev->nDataBytesPerChunk * dev->nChunksPerBlock; ei.time = 1000; ei.retries = 2; ei.callback = NULL; ei.priv = (u_long) dev; /* Todo finish off the ei if required */ /* XXX U-BOOT XXX */ #if 0 sema_init(&dev->sem, 0); #endif retval = mtd->erase(mtd, &ei); if (retval == 0) return YAFFS_OK; else return YAFFS_FAIL; } int nandmtd_InitialiseNAND(yaffs_Device * dev) { return YAFFS_OK; }