u-boot/include/linux/mtd/jffs2-user.h
William Juul cfa460adfd Update MTD to that of Linux 2.6.22.1
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>
2008-08-12 11:31:15 -05:00

35 lines
897 B
C

/*
* $Id: jffs2-user.h,v 1.1 2004/05/05 11:57:54 dwmw2 Exp $
*
* JFFS2 definitions for use in user space only
*/
#ifndef __JFFS2_USER_H__
#define __JFFS2_USER_H__
/* This file is blessed for inclusion by userspace */
#include <linux/jffs2.h>
#include <endian.h>
#include <byteswap.h>
#undef cpu_to_je16
#undef cpu_to_je32
#undef cpu_to_jemode
#undef je16_to_cpu
#undef je32_to_cpu
#undef jemode_to_cpu
extern int target_endian;
#define t16(x) ({ uint16_t __b = (x); (target_endian==__BYTE_ORDER)?__b:bswap_16(__b); })
#define t32(x) ({ uint32_t __b = (x); (target_endian==__BYTE_ORDER)?__b:bswap_32(__b); })
#define cpu_to_je16(x) ((jint16_t){t16(x)})
#define cpu_to_je32(x) ((jint32_t){t32(x)})
#define cpu_to_jemode(x) ((jmode_t){t32(x)})
#define je16_to_cpu(x) (t16((x).v16))
#define je32_to_cpu(x) (t32((x).v32))
#define jemode_to_cpu(x) (t32((x).m))
#endif /* __JFFS2_USER_H__ */