aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-davinci
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-davinci')
-rw-r--r--arch/arm/mach-davinci/include/mach/nand.h80
1 files changed, 80 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/include/mach/nand.h b/arch/arm/mach-davinci/include/mach/nand.h
new file mode 100644
index 00000000000..aa482841270
--- /dev/null
+++ b/arch/arm/mach-davinci/include/mach/nand.h
@@ -0,0 +1,80 @@
+/*
+ * mach-davinci/nand.h
+ *
+ * Copyright © 2006 Texas Instruments.
+ *
+ * Ported to 2.6.23 Copyright © 2008 by
+ * Sander Huijsen <Shuijsen@optelecom-nkf.com>
+ * Troy Kisky <troy.kisky@boundarydevices.com>
+ * Dirk Behme <Dirk.Behme@gmail.com>
+ *
+ * --------------------------------------------------------------------------
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __ARCH_ARM_DAVINCI_NAND_H
+#define __ARCH_ARM_DAVINCI_NAND_H
+
+#include <linux/mtd/nand.h>
+
+#define NRCSR_OFFSET 0x00
+#define AWCCR_OFFSET 0x04
+#define A1CR_OFFSET 0x10
+#define NANDFCR_OFFSET 0x60
+#define NANDFSR_OFFSET 0x64
+#define NANDF1ECC_OFFSET 0x70
+
+/* 4-bit ECC syndrome registers */
+#define NAND_4BIT_ECC_LOAD_OFFSET 0xbc
+#define NAND_4BIT_ECC1_OFFSET 0xc0
+#define NAND_4BIT_ECC2_OFFSET 0xc4
+#define NAND_4BIT_ECC3_OFFSET 0xc8
+#define NAND_4BIT_ECC4_OFFSET 0xcc
+#define NAND_ERR_ADD1_OFFSET 0xd0
+#define NAND_ERR_ADD2_OFFSET 0xd4
+#define NAND_ERR_ERRVAL1_OFFSET 0xd8
+#define NAND_ERR_ERRVAL2_OFFSET 0xdc
+
+/* NOTE: boards don't need to use these address bits
+ * for ALE/CLE unless they support booting from NAND.
+ * They're used unless platform data overrides them.
+ */
+#define MASK_ALE 0x08
+#define MASK_CLE 0x10
+
+struct davinci_nand_pdata { /* platform_data */
+ uint32_t mask_ale;
+ uint32_t mask_cle;
+
+ /* for packages using two chipselects */
+ uint32_t mask_chipsel;
+
+ /* board's default static partition info */
+ struct mtd_partition *parts;
+ unsigned nr_parts;
+
+ /* none == NAND_ECC_NONE (strongly *not* advised!!)
+ * soft == NAND_ECC_SOFT
+ * 1-bit == NAND_ECC_HW
+ * 4-bit == NAND_ECC_HW_SYNDROME (not on all chips)
+ */
+ nand_ecc_modes_t ecc_mode;
+
+ /* e.g. NAND_BUSWIDTH_16 or NAND_USE_FLASH_BBT */
+ unsigned options;
+};
+
+#endif /* __ARCH_ARM_DAVINCI_NAND_H */