openwrt/target/linux/generic/patches-3.18/432-mtd-bcm47xxpart-detect-T_Meter-partition.patch

From fd54aa583296f9adfb1f519affbc10ba521eb809 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Wed, 28 Jan 2015 22:14:41 +0100
Subject: [PATCH] mtd: bcm47xxpart: detect T_Meter partition
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It can be found on many Netgear devices. It consists of many 0x30 blocks
starting with 4D 54.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
---
 drivers/mtd/bcm47xxpart.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

--- a/drivers/mtd/bcm47xxpart.c
+++ b/drivers/mtd/bcm47xxpart.c
@@ -39,6 +39,7 @@
 #define NVRAM_HEADER			0x48534C46	/* FLSH */
 #define POT_MAGIC1			0x54544f50	/* POTT */
 #define POT_MAGIC2			0x504f		/* OP */
+#define T_METER_MAGIC			0x4D540000	/* MT */
 #define ML_MAGIC1			0x39685a42
 #define ML_MAGIC2			0x26594131
 #define TRX_MAGIC			0x30524448
@@ -180,6 +181,15 @@ static int bcm47xxpart_parse(struct mtd_
 					     MTD_WRITEABLE);
 			continue;
 		}
+
+		/* T_Meter */
+		if ((le32_to_cpu(buf[0x000 / 4]) & 0xFFFF0000) == T_METER_MAGIC &&
+		    (le32_to_cpu(buf[0x030 / 4]) & 0xFFFF0000) == T_METER_MAGIC &&
+		    (le32_to_cpu(buf[0x060 / 4]) & 0xFFFF0000) == T_METER_MAGIC) {
+			bcm47xxpart_add_part(&parts[curr_part++], "T_Meter", offset,
+					     MTD_WRITEABLE);
+			continue;
+		}
 
 		/* TRX */
 		if (buf[0x000 / 4] == TRX_MAGIC) {