From patchwork Thu Sep 27 21:18:38 2012
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Subject: [U-Boot] nand: Extending the nand_ecclayout struct based on Linux 3.5
From: Charles Hardin <ckhardin@exablox.com>
X-Patchwork-Id: 187725
Message-Id: <1348780718-1082-1-git-send-email-ckhardin@exablox.com>
To: u-boot@lists.denx.de
Cc: Scott Wodd <scottwood@freescale.com>,
 Charles Hardin <ckhardin@exablox.com>, 
 Jeremy Fitzhardinge <jeremy@exablox.com>
Date: Thu, 27 Sep 2012 14:18:38 -0700

NANDs with large page sizes are getting oob ares of 218 and 224
so the eccpos field needs to support these larger areas since
BCH ECC correction with 24-bit over 1024 bytes will use 168 bytes
of the oob for ECC and is required for current MLC NAND parts
circa 2012.

Signed-off-by: Charles Hardin <ckhardin@exablox.com>


diff --git a/include/linux/mtd/mtd-abi.h b/include/linux/mtd/mtd-abi.h
index 1e7a18f..c321d6b 100644
--- a/include/linux/mtd/mtd-abi.h
+++ b/include/linux/mtd/mtd-abi.h
@@ -116,16 +116,17 @@ struct nand_oobfree {
 	uint32_t length;
 };
 
-#define MTD_MAX_OOBFREE_ENTRIES	8
+#define MTD_MAX_OOBFREE_ENTRIES_LARGE   32
+#define MTD_MAX_ECCPOS_ENTRIES_LARGE    448
 /*
  * ECC layout control structure. Exported to userspace for
  * diagnosis and to allow creation of raw images
  */
 struct nand_ecclayout {
 	uint32_t eccbytes;
-	uint32_t eccpos[128];
+	uint32_t eccpos[MTD_MAX_ECCPOS_ENTRIES_LARGE];
 	uint32_t oobavail;
-	struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES];
+	struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES_LARGE];
 };
 
 /**