mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-30 16:39:35 +00:00
89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
/*
|
|
* (C) Copyright 2000-2003
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
|
|
* TsiChung Liew (Tsi-Chung.Liew@freescale.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 <config.h>
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/immap.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
#if defined(CONFIG_CMD_NAND)
|
|
#include <nand.h>
|
|
#include <linux/mtd/mtd.h>
|
|
|
|
#define SET_CLE 0x10
|
|
#define SET_ALE 0x08
|
|
|
|
static void nand_hwcontrol(struct mtd_info *mtdinfo, int cmd, unsigned int ctrl)
|
|
{
|
|
struct nand_chip *this = mtdinfo->priv;
|
|
volatile u16 *nCE = (u16 *) CONFIG_SYS_LATCH_ADDR;
|
|
|
|
if (ctrl & NAND_CTRL_CHANGE) {
|
|
ulong IO_ADDR_W = (ulong) this->IO_ADDR_W;
|
|
|
|
IO_ADDR_W &= ~(SET_ALE | SET_CLE);
|
|
|
|
if (ctrl & NAND_NCE)
|
|
*nCE &= 0xFFFB;
|
|
else
|
|
*nCE |= 0x0004;
|
|
|
|
if (ctrl & NAND_CLE)
|
|
IO_ADDR_W |= SET_CLE;
|
|
if (ctrl & NAND_ALE)
|
|
IO_ADDR_W |= SET_ALE;
|
|
|
|
this->IO_ADDR_W = (void *)IO_ADDR_W;
|
|
}
|
|
|
|
if (cmd != NAND_CMD_NONE)
|
|
writeb(cmd, this->IO_ADDR_W);
|
|
}
|
|
|
|
int board_nand_init(struct nand_chip *nand)
|
|
{
|
|
gpio_t *gpio = (gpio_t *) MMAP_GPIO;
|
|
|
|
/*
|
|
* set up pin configuration - enabled 2nd output buffer's signals
|
|
* (nand_ngpio - nCE USB1/2_PWR_EN, LATCH_GPIOs, LCD_VEEEN, etc)
|
|
* to use nCE signal
|
|
*/
|
|
clrbits_8(&gpio->par_timer, GPIO_PAR_TIN3_TIN3);
|
|
setbits_8(&gpio->pddr_timer, 0x08);
|
|
setbits_8(&gpio->ppd_timer, 0x08);
|
|
out_8(&gpio->pclrr_timer, 0);
|
|
out_8(&gpio->podr_timer, 0);
|
|
|
|
nand->chip_delay = 60;
|
|
nand->ecc.mode = NAND_ECC_SOFT;
|
|
nand->cmd_ctrl = nand_hwcontrol;
|
|
|
|
return 0;
|
|
}
|
|
#endif
|