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git.ipfire.org Git - people/ms/u-boot.git/blob - board/freescale/m5373evb/nand.c
2 * (C) Copyright 2000-2003
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
6 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30 #include <asm/immap.h>
32 DECLARE_GLOBAL_DATA_PTR
;
34 #if defined(CONFIG_CMD_NAND)
36 #include <linux/mtd/mtd.h>
41 static void nand_hwcontrol(struct mtd_info
*mtdinfo
, int cmd
, unsigned int ctrl
)
43 struct nand_chip
*this = mtdinfo
->priv
;
44 volatile fbcs_t
*fbcs
= (fbcs_t
*) MMAP_FBCS
;
45 u32 nand_baseaddr
= (u32
) this->IO_ADDR_W
;
47 if (ctrl
& NAND_CTRL_CHANGE
) {
48 ulong IO_ADDR_W
= (ulong
) this->IO_ADDR_W
;
49 IO_ADDR_W
&= ~(SET_ALE
| SE_CLE
);
56 at91_set_gpio_value(AT91_PIN_PD15
, !(ctrl
& NAND_NCE
));
57 this->IO_ADDR_W
= (void *)IO_ADDR_W
;
61 if (cmd
!= NAND_CMD_NONE
)
62 writeb(cmd
, this->IO_ADDR_W
);
65 int board_nand_init(struct nand_chip
*nand
)
67 volatile gpio_t
*gpio
= (gpio_t
*) MMAP_GPIO
;
68 volatile fbcs_t
*fbcs
= (fbcs_t
*) MMAP_FBCS
;
70 *((volatile u16
*)CONFIG_SYS_LATCH_ADDR
) |= 0x0004;
71 fbcs
->csmr2
&= ~FBCS_CSMR_WP
;
73 /* set up pin configuration */
74 gpio
->par_timer
&= ~GPIO_PAR_TIN3_TIN3
;
75 gpio
->pddr_timer
|= 0x08;
76 gpio
->ppd_timer
|= 0x08;
77 gpio
->pclrr_timer
= 0;
80 nand
->chip_delay
= 50;
81 nand
->ecc
.mode
= NAND_ECC_SOFT
;
82 nand
->cmd_ctrl
= nand_hwcontrol
;