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/*
* (C) Copyright 2008
* Heiko Schocher, DENX Software Engineering, hs@denx.de.
*
* 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>
#include <ioports.h>
#include <mpc8260.h>
#include "tqm8272.h"
/* UPM pattern for bus clock = 66.7 MHz */
static const uint upmTable67[] =
{
/* Offset UPM Read Single RAM array entry -> NAND Read Data */
/* 0x00 */ 0x0fa3f100, 0x0fa3b000, 0x0fa33100, 0x0fa33000,
/* 0x04 */ 0x0fa33000, 0x0fa33004, 0xfffffc01, 0xfffffc00,
/* UPM Read Burst RAM array entry -> unused */
/* 0x08 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x0C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* UPM Read Burst RAM array entry -> unused */
/* 0x10 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x14 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* UPM Write Single RAM array entry -> NAND Write Data, ADDR and CMD */
/* 0x18 */ 0x00a3fc00, 0x00a3fc00, 0x00a3fc00, 0x00a3fc00,
/* 0x1C */ 0x0fa3fc00, 0x0fa3fc04, 0xfffffc01, 0xfffffc00,
/* UPM Write Burst RAM array entry -> unused */
/* 0x20 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x24 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x28 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x2C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
/* UPM Refresh Timer RAM array entry -> unused */
/* 0x30 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x34 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x38 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
/* UPM Exception RAM array entry -> unsused */
/* 0x3C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
};
/* UPM pattern for bus clock = 100 MHz */
static const uint upmTable100[] =
{
/* Offset UPM Read Single RAM array entry -> NAND Read Data */
/* 0x00 */ 0x0fa3f200, 0x0fa3b000, 0x0fa33300, 0x0fa33000,
/* 0x04 */ 0x0fa33000, 0x0fa33004, 0xfffffc01, 0xfffffc00,
/* UPM Read Burst RAM array entry -> unused */
/* 0x08 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x0C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* UPM Read Burst RAM array entry -> unused */
/* 0x10 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x14 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* UPM Write Single RAM array entry -> NAND Write Data, ADDR and CMD */
/* 0x18 */ 0x00a3ff00, 0x00a3fc00, 0x00a3fc00, 0x0fa3fc00,
/* 0x1C */ 0x0fa3fc00, 0x0fa3fc04, 0xfffffc01, 0xfffffc00,
/* UPM Write Burst RAM array entry -> unused */
/* 0x20 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x24 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x28 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x2C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
/* UPM Refresh Timer RAM array entry -> unused */
/* 0x30 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x34 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x38 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
/* UPM Exception RAM array entry -> unsused */
/* 0x3C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
};
/* UPM pattern for bus clock = 133.3 MHz */
static const uint upmTable133[] =
{
/* Offset UPM Read Single RAM array entry -> NAND Read Data */
/* 0x00 */ 0x0fa3f300, 0x0fa3b000, 0x0fa33300, 0x0fa33000,
/* 0x04 */ 0x0fa33200, 0x0fa33004, 0xfffffc01, 0xfffffc00,
/* UPM Read Burst RAM array entry -> unused */
/* 0x08 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x0C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* UPM Read Burst RAM array entry -> unused */
/* 0x10 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x14 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* UPM Write Single RAM array entry -> NAND Write Data, ADDR and CMD */
/* 0x18 */ 0x00a3ff00, 0x00a3fc00, 0x00a3fd00, 0x0fa3fc00,
/* 0x1C */ 0x0fa3fd00, 0x0fa3fc04, 0xfffffc01, 0xfffffc00,
/* UPM Write Burst RAM array entry -> unused */
/* 0x20 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x24 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x28 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x2C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
/* UPM Refresh Timer RAM array entry -> unused */
/* 0x30 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x34 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
/* 0x38 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
/* UPM Exception RAM array entry -> unsused */
/* 0x3C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
};
static int chipsel = 0;
#if defined(CONFIG_CMD_NAND)
#include <nand.h>
#include <linux/mtd/mtd.h>
static u8 hwctl = 0;
static void upmnand_write_byte(struct mtd_info *mtdinfo, u_char byte)
{
struct nand_chip *this = mtdinfo->priv;
ulong base = (ulong) (this->IO_ADDR_W + chipsel * CFG_NAND_CS_DIST);
if (hwctl & 0x1) {
WRITE_NAND_UPM(byte, base, CFG_NAND_UPM_WRITE_CMD_OFS);
} else if (hwctl & 0x2) {
WRITE_NAND_UPM(byte, base, CFG_NAND_UPM_WRITE_ADDR_OFS);
} else {
WRITE_NAND(byte, base);
}
}
static void upmnand_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
{
if (ctrl & NAND_CTRL_CHANGE) {
if ( ctrl & NAND_CLE )
hwctl |= 0x1;
else
hwctl &= ~0x1;
if ( ctrl & NAND_ALE )
hwctl |= 0x2;
else
hwctl &= ~0x2;
}
if (cmd != NAND_CMD_NONE)
upmnand_write_byte (mtd, cmd);
}
static u_char upmnand_read_byte(struct mtd_info *mtdinfo)
{
struct nand_chip *this = mtdinfo->priv;
ulong base = (ulong) (this->IO_ADDR_W + chipsel * CFG_NAND_CS_DIST);
return READ_NAND(base);
}
static int tqm8272_dev_ready(struct mtd_info *mtdinfo)
{
/* constant delay (see also tR in the datasheet) */
udelay(12); \
return 1;
}
#ifndef CONFIG_NAND_SPL
static void tqm8272_read_buf(struct mtd_info *mtdinfo, uint8_t *buf, int len)
{
struct nand_chip *this = mtdinfo->priv;
unsigned char *base = (unsigned char *) (this->IO_ADDR_W + chipsel * CFG_NAND_CS_DIST);
int i;
for (i = 0; i< len; i++)
buf[i] = *base;
}
static void tqm8272_write_buf(struct mtd_info *mtdinfo, const uint8_t *buf, int len)
{
struct nand_chip *this = mtdinfo->priv;
unsigned char *base = (unsigned char *) (this->IO_ADDR_W + chipsel * CFG_NAND_CS_DIST);
int i;
for (i = 0; i< len; i++)
*base = buf[i];
}
static int tqm8272_verify_buf(struct mtd_info *mtdinfo, const uint8_t *buf, int len)
{
struct nand_chip *this = mtdinfo->priv;
unsigned char *base = (unsigned char *) (this->IO_ADDR_W + chipsel * CFG_NAND_CS_DIST);
int i;
for (i = 0; i < len; i++)
if (buf[i] != *base)
return -1;
return 0;
}
#endif /* #ifndef CONFIG_NAND_SPL */
void board_nand_select_device(struct nand_chip *nand, int chip)
{
chipsel = chip;
}
int board_nand_init(struct nand_chip *nand)
{
static int UpmInit = 0;
volatile immap_t * immr = (immap_t *)CFG_IMMR;
volatile memctl8260_t *memctl = &immr->im_memctl;
if (hwinf.nand == 0) return -1;
/* Setup the UPM */
if (UpmInit == 0) {
switch (hwinf.busclk_real) {
case 100000000:
upmconfig (UPMB, (uint *) upmTable100,
sizeof (upmTable100) / sizeof (uint));
break;
case 133333333:
upmconfig (UPMB, (uint *) upmTable133,
sizeof (upmTable133) / sizeof (uint));
break;
default:
upmconfig (UPMB, (uint *) upmTable67,
sizeof (upmTable67) / sizeof (uint));
break;
}
UpmInit = 1;
}
/* Setup the memctrl */
memctl->memc_or3 = CFG_NAND_OR;
memctl->memc_br3 = CFG_NAND_BR;
memctl->memc_mbmr = (MxMR_OP_NORM);
nand->ecc.mode = NAND_ECC_SOFT;
nand->cmd_ctrl = upmnand_hwcontrol;
nand->read_byte = upmnand_read_byte;
nand->dev_ready = tqm8272_dev_ready;
#ifndef CONFIG_NAND_SPL
nand->write_buf = tqm8272_write_buf;
nand->read_buf = tqm8272_read_buf;
nand->verify_buf = tqm8272_verify_buf;
#endif
/*
* Select required NAND chip
*/
board_nand_select_device(nand, 0);
return 0;
}
#endif
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