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Diffstat (limited to 'board/tqc/tqm8272/nand.c')
-rw-r--r--board/tqc/tqm8272/nand.c276
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
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--- /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 * CONFIG_SYS_NAND_CS_DIST);
+
+ if (hwctl & 0x1) {
+ WRITE_NAND_UPM(byte, base, CONFIG_SYS_NAND_UPM_WRITE_CMD_OFS);
+ } else if (hwctl & 0x2) {
+ WRITE_NAND_UPM(byte, base, CONFIG_SYS_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 * CONFIG_SYS_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 * CONFIG_SYS_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 * CONFIG_SYS_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 * CONFIG_SYS_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 *)CONFIG_SYS_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 = CONFIG_SYS_NAND_OR;
+ memctl->memc_br3 = CONFIG_SYS_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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