summaryrefslogtreecommitdiff
path: root/include/linux/mtd/nand.h
diff options
context:
space:
mode:
authorwdenk <wdenk>2002-11-02 23:30:20 +0000
committerwdenk <wdenk>2002-11-02 23:30:20 +0000
commite221174377d7e3ee848e014b96430d4c97023e93 (patch)
treecfaa85f367bc58b8770b3dabf4e9fd64121127bf /include/linux/mtd/nand.h
parent7ebf7443ad018a0647f549a835a55f0c08d7a15d (diff)
downloadu-boot-imx-e221174377d7e3ee848e014b96430d4c97023e93.zip
u-boot-imx-e221174377d7e3ee848e014b96430d4c97023e93.tar.gz
u-boot-imx-e221174377d7e3ee848e014b96430d4c97023e93.tar.bz2
Initial revision
Diffstat (limited to 'include/linux/mtd/nand.h')
-rw-r--r--include/linux/mtd/nand.h87
1 files changed, 87 insertions, 0 deletions
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
new file mode 100644
index 0000000..a3a7ec3
--- /dev/null
+++ b/include/linux/mtd/nand.h
@@ -0,0 +1,87 @@
+/*
+ * u-boot/include/linux/mtd/nand.h
+ *
+ * Copyright (c) 2000 David Woodhouse <dwmw2@mvhi.com>
+ * Steven J. Hill <sjhill@cotw.com>
+ *
+ * $Id: nand.h,v 1.8 2000/10/30 17:16:17 sjhill Exp $
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Info:
+ * Contains standard defines and IDs for NAND flash devices
+ *
+ * Changelog:
+ * 01-31-2000 DMW Created
+ * 09-18-2000 SJH Moved structure out of the Disk-On-Chip drivers
+ * so it can be used by other NAND flash device
+ * drivers. I also changed the copyright since none
+ * of the original contents of this file are specific
+ * to DoC devices. David can whack me with a baseball
+ * bat later if I did something naughty.
+ * 10-11-2000 SJH Added private NAND flash structure for driver
+ * 10-24-2000 SJH Added prototype for 'nand_scan' function
+ */
+#ifndef __LINUX_MTD_NAND_H
+#define __LINUX_MTD_NAND_H
+
+/*
+ * Standard NAND flash commands
+ */
+#define NAND_CMD_READ0 0
+#define NAND_CMD_READ1 1
+#define NAND_CMD_PAGEPROG 0x10
+#define NAND_CMD_READOOB 0x50
+#define NAND_CMD_ERASE1 0x60
+#define NAND_CMD_STATUS 0x70
+#define NAND_CMD_SEQIN 0x80
+#define NAND_CMD_READID 0x90
+#define NAND_CMD_ERASE2 0xd0
+#define NAND_CMD_RESET 0xff
+
+/*
+ * NAND Flash Manufacturer ID Codes
+ */
+#define NAND_MFR_TOSHIBA 0x98
+#define NAND_MFR_SAMSUNG 0xec
+
+/*
+ * NAND Flash Device ID Structure
+ *
+ * Structure overview:
+ *
+ * name - Complete name of device
+ *
+ * manufacture_id - manufacturer ID code of device.
+ *
+ * model_id - model ID code of device.
+ *
+ * chipshift - total number of address bits for the device which
+ * is used to calculate address offsets and the total
+ * number of bytes the device is capable of.
+ *
+ * page256 - denotes if flash device has 256 byte pages or not.
+ *
+ * pageadrlen - number of bytes minus one needed to hold the
+ * complete address into the flash array. Keep in
+ * mind that when a read or write is done to a
+ * specific address, the address is input serially
+ * 8 bits at a time. This structure member is used
+ * by the read/write routines as a loop index for
+ * shifting the address out 8 bits at a time.
+ *
+ * erasesize - size of an erase block in the flash device.
+ */
+struct nand_flash_dev {
+ char * name;
+ int manufacture_id;
+ int model_id;
+ int chipshift;
+ char page256;
+ char pageadrlen;
+ unsigned long erasesize;
+};
+
+#endif /* __LINUX_MTD_NAND_H */