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authorRichard Purdie <rpurdie@rpsys.net>2005-11-03 11:36:45 +0000
committerThomas Gleixner <tglx@mtd.linutronix.de>2005-11-06 23:34:39 +0100
commit87c146dc1a8552d7ad431a41b37ba8168e51e50e (patch)
tree217eb9cbbc8f415be6d4eea9573c5aaefb81e035
parent6f6ed056d2d5de7af9f0c14cf5bc73707eeb0a88 (diff)
[MTD] NAND sharpsl.c: Add support for akita and borzoi models
The Sharp Zaurus akita and borzoi models are large page flash devices. This patch adds support for them to the sharpsl MTD NAND driver but keeps the oob layout and bad block positions compatible with the Sharp Zaurus 2.4 kernel and ROM bootloader. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-rw-r--r--drivers/mtd/nand/sharpsl.c27
1 files changed, 24 insertions, 3 deletions
diff --git a/drivers/mtd/nand/sharpsl.c b/drivers/mtd/nand/sharpsl.c
index 88b5b5b40b4..6def3d33b06 100644
--- a/drivers/mtd/nand/sharpsl.c
+++ b/drivers/mtd/nand/sharpsl.c
@@ -3,7 +3,7 @@
*
* Copyright (C) 2004 Richard Purdie
*
- * $Id: sharpsl.c,v 1.4 2005/01/23 11:09:19 rpurdie Exp $
+ * $Id: sharpsl.c,v 1.6 2005/11/03 11:36:42 rpurdie Exp $
*
* Based on Sharp's NAND driver sharp_sl.c
*
@@ -115,6 +115,23 @@ static struct nand_bbt_descr sharpsl_bbt = {
.pattern = scan_ff_pattern
};
+static struct nand_bbt_descr sharpsl_akita_bbt = {
+ .options = 0,
+ .offs = 4,
+ .len = 1,
+ .pattern = scan_ff_pattern
+};
+
+static struct nand_oobinfo akita_oobinfo = {
+ .useecc = MTD_NANDECC_AUTOPLACE,
+ .eccbytes = 24,
+ .eccpos = {
+ 0x5, 0x1, 0x2, 0x3, 0x6, 0x7, 0x15, 0x11,
+ 0x12, 0x13, 0x16, 0x17, 0x25, 0x21, 0x22, 0x23,
+ 0x26, 0x27, 0x35, 0x31, 0x32, 0x33, 0x36, 0x37},
+ .oobfree = { {0x08, 0x09} }
+};
+
static int
sharpsl_nand_dev_ready(struct mtd_info* mtd)
{
@@ -194,10 +211,14 @@ sharpsl_nand_init(void)
this->chip_delay = 15;
/* set eccmode using hardware ECC */
this->eccmode = NAND_ECC_HW3_256;
+ this->badblock_pattern = &sharpsl_bbt;
+ if (machine_is_akita() || machine_is_borzoi()) {
+ this->badblock_pattern = &sharpsl_akita_bbt;
+ this->autooob = &akita_oobinfo;
+ }
this->enable_hwecc = sharpsl_nand_enable_hwecc;
this->calculate_ecc = sharpsl_nand_calculate_ecc;
this->correct_data = nand_correct_data;
- this->badblock_pattern = &sharpsl_bbt;
/* Scan to find existence of the device */
err=nand_scan(sharpsl_mtd,1);
@@ -230,7 +251,7 @@ sharpsl_nand_init(void)
}
}
- if (machine_is_husky() || machine_is_borzoi()) {
+ if (machine_is_husky() || machine_is_borzoi() || machine_is_akita()) {
/* Need to use small eraseblock size for backward compatibility */
sharpsl_mtd->flags |= MTD_NO_VIRTBLOCKS;
}