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/*
* MPC8360E-RDK support for the NAND on FSL UPM
*
* Copyright (C) 2007 MontaVista Software, Inc.
* Anton Vorontsov <avorontsov@ru.mvista.com>
*
* 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.
*/
#include <config.h>
#include <common.h>
#include <asm/io.h>
#include <asm/immap_83xx.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/fsl_upm.h>
#include <nand.h>
static struct immap *im = (struct immap *)CONFIG_SYS_IMMR;
static const u32 upm_array[] = {
0x0ff03c30, 0x0ff03c30, 0x0ff03c34, 0x0ff33c30, /* Words 0 to 3 */
0xfff33c31, 0xfffffc30, 0xfffffc30, 0xfffffc30, /* Words 4 to 7 */
0x0faf3c30, 0x0faf3c30, 0x0faf3c30, 0x0fff3c34, /* Words 8 to 11 */
0xffff3c31, 0xfffffc30, 0xfffffc30, 0xfffffc30, /* Words 12 to 15 */
0x0fa3fc30, 0x0fa3fc30, 0x0fa3fc30, 0x0ff3fc34, /* Words 16 to 19 */
0xfff3fc31, 0xfffffc30, 0xfffffc30, 0xfffffc30, /* Words 20 to 23 */
0x0ff33c30, 0x0fa33c30, 0x0fa33c34, 0x0ff33c30, /* Words 24 to 27 */
0xfff33c31, 0xfff0fc30, 0xfff0fc30, 0xfff0fc30, /* Words 28 to 31 */
0xfff3fc30, 0xfff3fc30, 0xfff6fc30, 0xfffcfc30, /* Words 32 to 35 */
0xfffcfc30, 0xfffcfc30, 0xfffcfc30, 0xfffcfc30, /* Words 36 to 39 */
0xfffcfc30, 0xfffcfc30, 0xfffcfc30, 0xfffcfc30, /* Words 40 to 43 */
0xfffdfc30, 0xfffffc30, 0xfffffc30, 0xfffffc31, /* Words 44 to 47 */
0xfffffc30, 0xfffffc00, 0xfffffc00, 0xfffffc00, /* Words 48 to 51 */
0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, /* Words 52 to 55 */
0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01, /* Words 56 to 59 */
0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01, /* Words 60 to 63 */
};
static void upm_setup(struct fsl_upm *upm)
{
int i;
/* write upm array */
out_be32(upm->mxmr, MxMR_OP_WARR);
for (i = 0; i < 64; i++) {
out_be32(upm->mdr, upm_array[i]);
out_8(upm->io_addr, 0x0);
}
/* normal operation */
out_be32(upm->mxmr, MxMR_OP_NORM);
while (in_be32(upm->mxmr) != MxMR_OP_NORM)
eieio();
}
static int dev_ready(void)
{
if (in_be32(&im->qepio.ioport[4].pdat) & 0x00002000) {
debug("nand ready\n");
return 1;
}
debug("nand busy\n");
return 0;
}
static struct fsl_upm_nand fun = {
.upm = {
.io_addr = (void *)CONFIG_SYS_NAND_BASE,
},
.width = 8,
.upm_cmd_offset = 8,
.upm_addr_offset = 16,
.dev_ready = dev_ready,
.wait_pattern = 1,
.chip_delay = 50,
};
int board_nand_init(struct nand_chip *nand)
{
fun.upm.mxmr = &im->lbus.mamr;
fun.upm.mdr = &im->lbus.mdr;
fun.upm.mar = &im->lbus.mar;
upm_setup(&fun.upm);
return fsl_upm_nand_init(nand, &fun);
}
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