TQM8272: move NAND part in seperate File

I didn't try to use drivers/mtd/nand/fsl_upm.c for the NAND driver,
because I have no longer access to the hardware.

Signed-off-by: Heiko Schocher <hs@denx.de>

1 files changed, 276 insertions, 0 deletions

diff --git a/board/tqc/tqm8272/nand.c b/board/tqc/tqm8272/nand.c
new file mode 100644
index 0000000..b988ffa
--- /dev/null
+++ b/board/tqc/tqm8272/nand.c
@@ -0,0 +1,276 @@
+/*
+ * (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