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Migrate esd 405EP boards to new NAND subsystem

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This patch prepares the migration from the legacy NAND driver
to U-Boot's new NAND subsystem for esd boards.

Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
This commit is contained in:
Matthias Fuchs 2007-07-09 10:10:04 +02:00 committed by Stefan Roese
parent 10e038932f
commit e09f7ab574
2 changed files with 91 additions and 0 deletions
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4
board/esd/common/auto_update.c
View File

@ -31,7 +31,9 @@
#include <command.h>
#include <image.h>
#include <asm/byteorder.h>
#if defined(CFG_NAND_LEGACY)
#include <linux/mtd/nand_legacy.h>
#endif
#include <fat.h>
#include <part.h>
@ -294,6 +296,8 @@ int au_do_update(int i, long sz)
rc = nand_legacy_rw(nand_dev_desc, NANDRW_WRITE | NANDRW_JFFS2,
start, nbytes, (size_t *)&total, (uchar *)addr);
debug ("nand_legacy_rw: ret=%x total=%d nbytes=%d\n", rc, total, nbytes);
#else
rc = -1;
#endif
}
if (rc != 0) {

87
board/esd/common/esd405ep_nand.c Normal file
View File

@ -0,0 +1,87 @@
/*
* (C) Copyright 2007
* Matthias Fuchs, esd gmbh germany, matthias.fuchs@esd-electronics.com
*
* 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
*/
#include <common.h>
#if (CONFIG_COMMANDS & CFG_CMD_NAND)
#include <asm/io.h>
#include <nand.h>
/*
* hardware specific access to control-lines
*/
static void esd405ep_nand_hwcontrol(struct mtd_info *mtdinfo, int cmd)
{
switch(cmd) {
case NAND_CTL_SETCLE:
out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CFG_NAND_CLE);
break;
case NAND_CTL_CLRCLE:
out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~CFG_NAND_CLE);
break;
case NAND_CTL_SETALE:
out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CFG_NAND_ALE);
break;
case NAND_CTL_CLRALE:
out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~CFG_NAND_ALE);
break;
case NAND_CTL_SETNCE:
out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~CFG_NAND_CE);
break;
case NAND_CTL_CLRNCE:
out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CFG_NAND_CE);
break;
}
}
/*
* read device ready pin
*/
static int esd405ep_nand_device_ready(struct mtd_info *mtdinfo)
{
if (in_be32((void *)GPIO0_IR) & CFG_NAND_RDY)
return 1;
return 0;
}
int board_nand_init(struct nand_chip *nand)
{
/*
* Set NAND-FLASH GPIO signals to defaults
*/
out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~(CFG_NAND_CLE | CFG_NAND_ALE));
out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CFG_NAND_CE);
/*
* Initialize nand_chip structure
*/
nand->hwcontrol = esd405ep_nand_hwcontrol;
nand->dev_ready = esd405ep_nand_device_ready;
nand->eccmode = NAND_ECC_SOFT;
nand->chip_delay = NAND_BIG_DELAY_US;
nand->options = NAND_SAMSUNG_LP_OPTIONS;
return 0;
}
#endif /* (CONFIG_COMMANDS & CFG_CMD_NAND) */