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277 lines
8.6 KiB
C
277 lines
8.6 KiB
C
/*
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* (C) Copyright 2008
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* Heiko Schocher, DENX Software Engineering, hs@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <ioports.h>
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#include <mpc8260.h>
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#include "tqm8272.h"
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/* UPM pattern for bus clock = 66.7 MHz */
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static const uint upmTable67[] =
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{
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/* Offset UPM Read Single RAM array entry -> NAND Read Data */
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/* 0x00 */ 0x0fa3f100, 0x0fa3b000, 0x0fa33100, 0x0fa33000,
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/* 0x04 */ 0x0fa33000, 0x0fa33004, 0xfffffc01, 0xfffffc00,
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/* UPM Read Burst RAM array entry -> unused */
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/* 0x08 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x0C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* UPM Read Burst RAM array entry -> unused */
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/* 0x10 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x14 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* UPM Write Single RAM array entry -> NAND Write Data, ADDR and CMD */
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/* 0x18 */ 0x00a3fc00, 0x00a3fc00, 0x00a3fc00, 0x00a3fc00,
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/* 0x1C */ 0x0fa3fc00, 0x0fa3fc04, 0xfffffc01, 0xfffffc00,
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/* UPM Write Burst RAM array entry -> unused */
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/* 0x20 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x24 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x28 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x2C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
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/* UPM Refresh Timer RAM array entry -> unused */
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/* 0x30 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x34 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x38 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
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/* UPM Exception RAM array entry -> unsused */
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/* 0x3C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
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};
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/* UPM pattern for bus clock = 100 MHz */
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static const uint upmTable100[] =
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{
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/* Offset UPM Read Single RAM array entry -> NAND Read Data */
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/* 0x00 */ 0x0fa3f200, 0x0fa3b000, 0x0fa33300, 0x0fa33000,
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/* 0x04 */ 0x0fa33000, 0x0fa33004, 0xfffffc01, 0xfffffc00,
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/* UPM Read Burst RAM array entry -> unused */
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/* 0x08 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x0C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* UPM Read Burst RAM array entry -> unused */
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/* 0x10 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x14 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* UPM Write Single RAM array entry -> NAND Write Data, ADDR and CMD */
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/* 0x18 */ 0x00a3ff00, 0x00a3fc00, 0x00a3fc00, 0x0fa3fc00,
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/* 0x1C */ 0x0fa3fc00, 0x0fa3fc04, 0xfffffc01, 0xfffffc00,
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/* UPM Write Burst RAM array entry -> unused */
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/* 0x20 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x24 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x28 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x2C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
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/* UPM Refresh Timer RAM array entry -> unused */
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/* 0x30 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x34 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x38 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
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/* UPM Exception RAM array entry -> unsused */
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/* 0x3C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
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};
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/* UPM pattern for bus clock = 133.3 MHz */
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static const uint upmTable133[] =
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{
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/* Offset UPM Read Single RAM array entry -> NAND Read Data */
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/* 0x00 */ 0x0fa3f300, 0x0fa3b000, 0x0fa33300, 0x0fa33000,
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/* 0x04 */ 0x0fa33200, 0x0fa33004, 0xfffffc01, 0xfffffc00,
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/* UPM Read Burst RAM array entry -> unused */
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/* 0x08 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x0C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* UPM Read Burst RAM array entry -> unused */
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/* 0x10 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x14 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* UPM Write Single RAM array entry -> NAND Write Data, ADDR and CMD */
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/* 0x18 */ 0x00a3ff00, 0x00a3fc00, 0x00a3fd00, 0x0fa3fc00,
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/* 0x1C */ 0x0fa3fd00, 0x0fa3fc04, 0xfffffc01, 0xfffffc00,
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/* UPM Write Burst RAM array entry -> unused */
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/* 0x20 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x24 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x28 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x2C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
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/* UPM Refresh Timer RAM array entry -> unused */
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/* 0x30 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x34 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00,
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/* 0x38 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
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/* UPM Exception RAM array entry -> unsused */
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/* 0x3C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01,
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};
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static int chipsel = 0;
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#if defined(CONFIG_CMD_NAND)
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#include <nand.h>
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#include <linux/mtd/mtd.h>
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static u8 hwctl = 0;
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static void upmnand_write_byte(struct mtd_info *mtdinfo, u_char byte)
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{
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struct nand_chip *this = mtdinfo->priv;
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ulong base = (ulong) (this->IO_ADDR_W + chipsel * CONFIG_SYS_NAND_CS_DIST);
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if (hwctl & 0x1) {
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WRITE_NAND_UPM(byte, base, CONFIG_SYS_NAND_UPM_WRITE_CMD_OFS);
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} else if (hwctl & 0x2) {
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WRITE_NAND_UPM(byte, base, CONFIG_SYS_NAND_UPM_WRITE_ADDR_OFS);
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} else {
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WRITE_NAND(byte, base);
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}
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}
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static void upmnand_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
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{
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if (ctrl & NAND_CTRL_CHANGE) {
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if ( ctrl & NAND_CLE )
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hwctl |= 0x1;
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else
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hwctl &= ~0x1;
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if ( ctrl & NAND_ALE )
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hwctl |= 0x2;
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else
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hwctl &= ~0x2;
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}
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if (cmd != NAND_CMD_NONE)
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upmnand_write_byte (mtd, cmd);
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}
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static u_char upmnand_read_byte(struct mtd_info *mtdinfo)
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{
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struct nand_chip *this = mtdinfo->priv;
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ulong base = (ulong) (this->IO_ADDR_W + chipsel * CONFIG_SYS_NAND_CS_DIST);
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return READ_NAND(base);
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}
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static int tqm8272_dev_ready(struct mtd_info *mtdinfo)
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{
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/* constant delay (see also tR in the datasheet) */
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udelay(12); \
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return 1;
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}
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#ifndef CONFIG_NAND_SPL
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static void tqm8272_read_buf(struct mtd_info *mtdinfo, uint8_t *buf, int len)
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{
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struct nand_chip *this = mtdinfo->priv;
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unsigned char *base = (unsigned char *) (this->IO_ADDR_W + chipsel * CONFIG_SYS_NAND_CS_DIST);
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int i;
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for (i = 0; i< len; i++)
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buf[i] = *base;
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}
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static void tqm8272_write_buf(struct mtd_info *mtdinfo, const uint8_t *buf, int len)
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{
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struct nand_chip *this = mtdinfo->priv;
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unsigned char *base = (unsigned char *) (this->IO_ADDR_W + chipsel * CONFIG_SYS_NAND_CS_DIST);
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int i;
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for (i = 0; i< len; i++)
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*base = buf[i];
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}
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static int tqm8272_verify_buf(struct mtd_info *mtdinfo, const uint8_t *buf, int len)
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{
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struct nand_chip *this = mtdinfo->priv;
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unsigned char *base = (unsigned char *) (this->IO_ADDR_W + chipsel * CONFIG_SYS_NAND_CS_DIST);
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int i;
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for (i = 0; i < len; i++)
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if (buf[i] != *base)
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return -1;
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return 0;
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}
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#endif /* #ifndef CONFIG_NAND_SPL */
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void board_nand_select_device(struct nand_chip *nand, int chip)
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{
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chipsel = chip;
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}
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int board_nand_init(struct nand_chip *nand)
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{
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static int UpmInit = 0;
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volatile immap_t * immr = (immap_t *)CONFIG_SYS_IMMR;
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volatile memctl8260_t *memctl = &immr->im_memctl;
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if (hwinf.nand == 0) return -1;
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/* Setup the UPM */
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if (UpmInit == 0) {
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switch (hwinf.busclk_real) {
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case 100000000:
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upmconfig (UPMB, (uint *) upmTable100,
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sizeof (upmTable100) / sizeof (uint));
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break;
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case 133333333:
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upmconfig (UPMB, (uint *) upmTable133,
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sizeof (upmTable133) / sizeof (uint));
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break;
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default:
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upmconfig (UPMB, (uint *) upmTable67,
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sizeof (upmTable67) / sizeof (uint));
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break;
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}
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UpmInit = 1;
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}
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/* Setup the memctrl */
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memctl->memc_or3 = CONFIG_SYS_NAND_OR;
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memctl->memc_br3 = CONFIG_SYS_NAND_BR;
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memctl->memc_mbmr = (MxMR_OP_NORM);
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nand->ecc.mode = NAND_ECC_SOFT;
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nand->cmd_ctrl = upmnand_hwcontrol;
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nand->read_byte = upmnand_read_byte;
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nand->dev_ready = tqm8272_dev_ready;
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#ifndef CONFIG_NAND_SPL
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nand->write_buf = tqm8272_write_buf;
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nand->read_buf = tqm8272_read_buf;
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nand->verify_buf = tqm8272_verify_buf;
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#endif
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/*
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* Select required NAND chip
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*/
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board_nand_select_device(nand, 0);
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return 0;
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}
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#endif
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