u-boot/include/asm-arm/arch-davinci/nand_defs.h
David Brownell 6e29ed8e57 davinci_nand: cleanup II (CONFIG_SYS_DAVINCI_BROKEN_ECC)
Remove CONFIG_SYS_DAVINCI_BROKEN_ECC option.  It's not just nasty;
it's also unused by any current boards, and doesn't even match the
main U-Boot distributions from TI (which use soft ECC, or 4-bit ECC
on newer chips that support it).

DaVinci GIT kernels since 2.6.24, and mainline Linux since 2.6.30,
match non-BROKEN code paths for 1-bit HW ECC.  The BROKEN code paths
do seem to partially match what MontaVista/TI kernels (4.0/2.6.10,
and 5.0/2.6.18) do ... but only for small pages.  Large page support
is really broken (and it's unclear just what software it was trying
to match!), and the ECC layout was making three more bytes available
for use by filesystem (or whatever) code.

Since this option itself seems broken, remove it.  Add a comment
about the MV/TI compat issue, and the most straightforward way to
address it (should someone really need to solve it).

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Scott Wood <scottwood@freescale.com>
2009-07-07 17:58:01 -05:00

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C

/*
* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
*
* Parts shamelesly stolen from Linux Kernel source tree.
*
* ------------------------------------------------------------
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef _NAND_DEFS_H_
#define _NAND_DEFS_H_
#include <asm/arch/hardware.h>
#define MASK_CLE 0x10
#define MASK_ALE 0x0a
#define NAND_READ_START 0x00
#define NAND_READ_END 0x30
#define NAND_STATUS 0x70
#endif