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体验新版 GitCode,发现更多精彩内容 >>
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56a4a63c
编写于
4月 19, 2006
作者:
D
dzu@denx.de
提交者:
Detlev Zundel
4月 19, 2006
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差异文件
Added missing nand.c for NC650 board
Signed-off-by:
N
dzu@denx.de
<
dzu@eddie.localdomain
>
上级
a367d426
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1
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1 changed file
with
117 addition
and
0 deletion
+117
-0
board/nc650/nand.c
board/nc650/nand.c
+117
-0
未找到文件。
board/nc650/nand.c
0 → 100644
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56a4a63c
/*
* (C) Copyright 2006 Detlev Zundel, dzu@denx.de
* (C) Copyright 2006 DENX Software Engineering
*
* 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 <nand.h>
#if defined(CONFIG_IDS852_REV1)
/*
* hardware specific access to control-lines
*/
static
void
nc650_hwcontrol
(
struct
mtd_info
*
mtd
,
int
cmd
)
{
struct
nand_chip
*
this
=
mtd
->
priv
;
switch
(
cmd
)
{
case
NAND_CTL_SETCLE
:
this
->
IO_ADDR_W
+=
2
;
break
;
case
NAND_CTL_CLRCLE
:
this
->
IO_ADDR_W
-=
2
;
break
;
case
NAND_CTL_SETALE
:
this
->
IO_ADDR_W
+=
1
;
break
;
case
NAND_CTL_CLRALE
:
this
->
IO_ADDR_W
-=
1
;
break
;
case
NAND_CTL_SETNCE
:
case
NAND_CTL_CLRNCE
:
/* nop */
break
;
}
}
#elif defined(CONFIG_IDS852_REV2)
/*
* hardware specific access to control-lines
*/
static
void
nc650_hwcontrol
(
struct
mtd_info
*
mtd
,
int
cmd
)
{
struct
nand_chip
*
this
=
mtd
->
priv
;
switch
(
cmd
)
{
case
NAND_CTL_SETCLE
:
*
(((
volatile
__u8
*
)
this
->
IO_ADDR_W
)
+
0xa
)
=
0
;
break
;
case
NAND_CTL_CLRCLE
:
*
(((
volatile
__u8
*
)
this
->
IO_ADDR_W
)
+
0x8
)
=
0
;
break
;
case
NAND_CTL_SETALE
:
*
(((
volatile
__u8
*
)
this
->
IO_ADDR_W
)
+
0x9
)
=
0
;
break
;
case
NAND_CTL_CLRALE
:
*
(((
volatile
__u8
*
)
this
->
IO_ADDR_W
)
+
0x8
)
=
0
;
break
;
case
NAND_CTL_SETNCE
:
*
(((
volatile
__u8
*
)
this
->
IO_ADDR_W
)
+
0x8
)
=
0
;
break
;
case
NAND_CTL_CLRNCE
:
*
(((
volatile
__u8
*
)
this
->
IO_ADDR_W
)
+
0xc
)
=
0
;
break
;
}
}
#else
#error Unknown IDS852 module revision
#endif
/*
* Board-specific NAND initialization. The following members of the
* argument are board-specific (per include/linux/mtd/nand.h):
* - IO_ADDR_R?: address to read the 8 I/O lines of the flash device
* - IO_ADDR_W?: address to write the 8 I/O lines of the flash device
* - hwcontrol: hardwarespecific function for accesing control-lines
* - dev_ready: hardwarespecific function for accesing device ready/busy line
* - enable_hwecc?: function to enable (reset) hardware ecc generator. Must
* only be provided if a hardware ECC is available
* - eccmode: mode of ecc, see defines
* - chip_delay: chip dependent delay for transfering data from array to
* read regs (tR)
* - options: various chip options. They can partly be set to inform
* nand_scan about special functionality. See the defines for further
* explanation
* Members with a "?" were not set in the merged testing-NAND branch,
* so they are not set here either.
*/
void
board_nand_init
(
struct
nand_chip
*
nand
)
{
nand
->
hwcontrol
=
nc650_hwcontrol
;
nand
->
eccmode
=
NAND_ECC_SOFT
;
nand
->
chip_delay
=
12
;
/* nand->options = NAND_SAMSUNG_LP_OPTIONS;*/
}
#endif
/* (CONFIG_COMMANDS & CFG_CMD_NAND) */
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