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https://github.com/brain-hackers/u-boot-brain
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cfa460adfd
A lot changed in the Linux MTD code, since it was last ported from Linux to U-Boot. This patch takes U-Boot NAND support to the level of Linux 2.6.22.1 and will enable support for very large NAND devices (4KB pages) and ease the compatibility between U-Boot and Linux filesystems. This patch is tested on two custom boards with PPC and ARM processors running YAFFS in U-Boot and Linux using gcc-4.1.2 cross compilers. MAKEALL ppc/arm has some issues: * DOC/OneNand/nand_spl is not building (I have not tried porting these parts, and since I do not have any HW and I am not familiar with this code/HW I think its best left to someone else.) Except for the issues mentioned above, I have ported all drivers necessary to run MAKEALL ppc/arm without errors and warnings. Many drivers were trivial to port, but some were not so trivial. The following drivers must be examined carefully and maybe rewritten to some degree: cpu/ppc4xx/ndfc.c cpu/arm926ejs/davinci/nand.c board/delta/nand.c board/zylonite/nand.c Signed-off-by: William Juul <william.juul@tandberg.com> Signed-off-by: Stig Olsen <stig.olsen@tandberg.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
/*
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* $Id: nftl.h,v 1.16 2004/06/30 14:49:00 dbrown Exp $
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*
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* (C) 1999-2003 David Woodhouse <dwmw2@infradead.org>
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*/
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#ifndef __MTD_NFTL_H__
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#define __MTD_NFTL_H__
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/blktrans.h>
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#include <linux/mtd/nftl-user.h>
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/* these info are used in ReplUnitTable */
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#define BLOCK_NIL 0xffff /* last block of a chain */
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#define BLOCK_FREE 0xfffe /* free block */
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#define BLOCK_NOTEXPLORED 0xfffd /* non explored block, only used during mounting */
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#define BLOCK_RESERVED 0xfffc /* bios block or bad block */
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struct NFTLrecord {
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struct mtd_blktrans_dev mbd;
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__u16 MediaUnit, SpareMediaUnit;
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__u32 EraseSize;
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struct NFTLMediaHeader MediaHdr;
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int usecount;
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unsigned char heads;
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unsigned char sectors;
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unsigned short cylinders;
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__u16 numvunits;
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__u16 lastEUN; /* should be suppressed */
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__u16 numfreeEUNs;
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__u16 LastFreeEUN; /* To speed up finding a free EUN */
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int head,sect,cyl;
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__u16 *EUNtable; /* [numvunits]: First EUN for each virtual unit */
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__u16 *ReplUnitTable; /* [numEUNs]: ReplUnitNumber for each */
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unsigned int nb_blocks; /* number of physical blocks */
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unsigned int nb_boot_blocks; /* number of blocks used by the bios */
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struct erase_info instr;
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struct nand_ecclayout oobinfo;
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};
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int NFTL_mount(struct NFTLrecord *s);
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int NFTL_formatblock(struct NFTLrecord *s, int block);
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#ifndef NFTL_MAJOR
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#define NFTL_MAJOR 93
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#endif
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#define MAX_NFTLS 16
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#define MAX_SECTORS_PER_UNIT 64
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#define NFTL_PARTN_BITS 4
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#endif /* __MTD_NFTL_H__ */
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