linux-kernel - [PATCH 29/47] mtd: nand: stm_nand

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Date:	Thu,  1 May 2014 10:56:36 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	linux-kernel@...r.kernel.org
Cc:	computersforpeace@...il.com, linux-mtd@...ts.infradead.org,
	kernel@...inux.com, Lee Jones <lee.jones@...aro.org>
Subject: [PATCH 29/47] mtd: nand: stm_nand_bch: populate IBBT BCH Header

The STM NAND BCH Controller driver has extended the IBBT header with
some extra convenience properties. This function populates both those
and the standard header specified by 'struct nand_ibbt_header'.

Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 drivers/mtd/nand/stm_nand_bch.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/mtd/nand/stm_nand_bch.c b/drivers/mtd/nand/stm_nand_bch.c
index 27a87a3..bf8669b 100644
--- a/drivers/mtd/nand/stm_nand_bch.c
+++ b/drivers/mtd/nand/stm_nand_bch.c
@@ -26,6 +26,7 @@
 #include <linux/mtd/nand.h>
 #include <linux/mtd/stm_nand.h>
 #include <linux/mtd/partitions.h>
+#include <generated/utsrelease.h>
 
 #include "stm_nand_regs.h"
 #include "stm_nand_dt.h"
@@ -741,6 +742,22 @@ static int bbt_is_block_bad(uint8_t *bbt, uint32_t block)
 	return bbt_get_block_mark(bbt, block) == BBT_MARK_GOOD ? 0 : 1;
 }
 
+/* Populate IBBT BCH Header */
+static void bch_fill_ibbt_header(struct nandi_controller *nandi,
+				 struct nand_ibbt_bch_header *ibbt_header,
+				 int bak, uint8_t vers)
+{
+	const char author[] = "STLinux " UTS_RELEASE " (stm-nand-bch)";
+
+	memcpy(ibbt_header->base.signature, ibbt_sigs[bak], NAND_IBBT_SIGLEN);
+	ibbt_header->base.version = vers;
+	memset(ibbt_header->base.schema, NAND_IBBT_SCHEMA, 4);
+
+	memset(ibbt_header->schema, NAND_IBBT_SCHEMA, 4);
+	memset(ibbt_header->ecc_size, bch_ecc_sizes[nandi->bch_ecc_mode], 4);
+	memcpy(ibbt_header->author, author, sizeof(author));
+}
+
 /* Scan block for IBBT signature */
 static int bch_find_ibbt_sig(struct nandi_controller *nandi,
 			     uint32_t block, int *bak, uint8_t *vers,
-- 
1.8.3.2

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