Update of new NAND code

[karo-tx-uboot.git] / board / netstar / nand.c

diff --git a/board/netstar/nand.c b/board/netstar/nand.c
new file mode 100644 (file)
index 0000000..e5b7f33
--- /dev/null
+++ b/board/netstar/nand.c
@@ -0,0 +1,64 @@
+/*
+ * (C) Copyright 2005 2N TELEKOMUNIKACE, Ladislav Michl
+ *
+ * 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>
+
+#if (CONFIG_COMMANDS & CFG_CMD_NAND)
+
+#include <nand.h>
+
+/*
+ *     hardware specific access to control-lines
+ */
+#define        MASK_CLE        0x02
+#define        MASK_ALE        0x04
+
+static void netstar_nand_hwcontrol(struct mtd_info *mtd, int cmd)
+{
+       struct nand_chip *this = mtd->priv;
+       ulong IO_ADDR_W = (ulong) this->IO_ADDR_W;
+
+       IO_ADDR_W &= ~(MASK_ALE|MASK_CLE);
+       switch (cmd) {
+               case NAND_CTL_SETCLE: IO_ADDR_W |= MASK_CLE; break;
+               case NAND_CTL_SETALE: IO_ADDR_W |= MASK_ALE; break;
+       }
+       this->IO_ADDR_W = (void *) IO_ADDR_W;
+}
+
+/*
+ *     chip R/B detection
+ */
+static int netstar_nand_ready(struct mtd_info *mtd)
+{
+       return (*(volatile ushort *)GPIO_DATA_INPUT_REG) & 0x02;
+}
+
+void board_nand_init(struct nand_chip *nand)
+{
+       nand->options = NAND_SAMSUNG_LP_OPTIONS;
+       nand->eccmode = NAND_ECC_SOFT;
+       nand->hwcontrol = netstar_nand_hwcontrol;
+/*     nand->dev_ready = netstar_nand_ready; */
+       nand->chip_delay = 18;
+}
+#endif