brcm47xx: update mtd drivers

This backports some patches from linux upstream.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39249 3c298f89-4303-0410-b956-a3cf2f4a3e73

7 files changed, 154 insertions, 35 deletions

diff --git a/target/linux/brcm47xx/patches-3.10/020-mtd-bcm47xxpart-handle-malloc-failures.patch b/target/linux/brcm47xx/patches-3.10/020-mtd-bcm47xxpart-handle-malloc-failures.patch
new file mode 100644
index 0000000000..ad24b5993d
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.10/020-mtd-bcm47xxpart-handle-malloc-failures.patch
@@ -0,0 +1,30 @@
+From 99b1d1887fee36ef9ff5d2ee24f0cf3e8c172104 Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sun, 13 Oct 2013 22:53:49 +0200
+Subject: [PATCH] mtd: bcm47xxpart: handle malloc failures
+
+Handle return NULL in malloc.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+Signed-off-by: Brian Norris <computersforpeace@gmail.com>
+---
+ drivers/mtd/bcm47xxpart.c |    7 +++++++
+ 1 file changed, 7 insertions(+)
+
+--- a/drivers/mtd/bcm47xxpart.c
++++ b/drivers/mtd/bcm47xxpart.c
+@@ -71,7 +71,14 @@ static int bcm47xxpart_parse(struct mtd_
+ 	/* Alloc */
+ 	parts = kzalloc(sizeof(struct mtd_partition) * BCM47XXPART_MAX_PARTS,
+ 			GFP_KERNEL);
++	if (!parts)
++		return -ENOMEM;
++
+ 	buf = kzalloc(BCM47XXPART_BYTES_TO_READ, GFP_KERNEL);
++	if (!buf) {
++		kfree(parts);
++		return -ENOMEM;
++	}
+ 
+ 	/* Parse block by block looking for magics */
+ 	for (offset = 0; offset <= master->size - blocksize;
diff --git a/target/linux/brcm47xx/patches-3.10/029-mtd-bcm47xxpart_detect_block_aligned_Squashfs_partition.patch b/target/linux/brcm47xx/patches-3.10/021-mtd-bcm47xxpart-detect-block-aligned-Squashfs-partit.patch
index 0efe16f9d4..72891b2c6a 100644
--- a/target/linux/brcm47xx/patches-3.10/029-mtd-bcm47xxpart_detect_block_aligned_Squashfs_partition.patch
+++ b/target/linux/brcm47xx/patches-3.10/021-mtd-bcm47xxpart-detect-block-aligned-Squashfs-partit.patch
@@ -1,4 +1,10 @@
-mtd: bcm47xxpart: detect block aligned Squashfs partition
+From 020c6bcfbeabee72c18d862769d72cf9241b9004 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Mon, 21 Oct 2013 22:34:37 +0200
+Subject: [PATCH] mtd: bcm47xxpart: detect block aligned Squashfs partition
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
 
 Most of the bcm47xx devices use TRX format for storing kernel and some
 partition like Squashfs or JFFS2. This is pretty flexible solution, CFE
@@ -13,10 +19,14 @@ This patch allows Linux find a rootfs partition after installing custom
 image with a CFE bootloader.
 
 Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+Signed-off-by: Brian Norris <computersforpeace@gmail.com>
+---
+ drivers/mtd/bcm47xxpart.c |    8 ++++++++
+ 1 file changed, 8 insertions(+)
 
 --- a/drivers/mtd/bcm47xxpart.c
 +++ b/drivers/mtd/bcm47xxpart.c
-@@ -33,6 +33,7 @@
+@@ -32,6 +32,7 @@
  #define ML_MAGIC1			0x39685a42
  #define ML_MAGIC2			0x26594131
  #define TRX_MAGIC			0x30524448
@@ -24,7 +34,7 @@ Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
  
  struct trx_header {
  	uint32_t magic;
-@@ -170,6 +171,13 @@ static int bcm47xxpart_parse(struct mtd_
+@@ -174,6 +175,13 @@ static int bcm47xxpart_parse(struct mtd_
  			offset = rounddown(offset + trx->length, blocksize);
  			continue;
  		}
diff --git a/target/linux/brcm47xx/patches-3.10/030-mtd-bcm47xxpart_detect_factory_partition.patch b/target/linux/brcm47xx/patches-3.10/022-mtd-bcm47xxpart-detect-factory-partition.patch
index 6630700e87..389976cb85 100644
--- a/target/linux/brcm47xx/patches-3.10/030-mtd-bcm47xxpart_detect_factory_partition.patch
+++ b/target/linux/brcm47xx/patches-3.10/022-mtd-bcm47xxpart-detect-factory-partition.patch
@@ -1,21 +1,31 @@
-mtd: bcm47xxpart: detect "factory" partition
+From 33094c736cd36a6cecadae6bce4daba89dabc326 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Mon, 21 Oct 2013 22:35:34 +0200
+Subject: [PATCH] mtd: bcm47xxpart: detect "factory" partition
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
 
 A new type of partition with magic FCTY was found on Huawei E970:
 46 43 54 59 4b 51 37 4e  41 42 31 38 41 32 39 30  |FCTYKQ7NAB18A290|
 
 Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+Signed-off-by: Brian Norris <computersforpeace@gmail.com>
+---
+ drivers/mtd/bcm47xxpart.c |    8 ++++++++
+ 1 file changed, 8 insertions(+)
 
 --- a/drivers/mtd/bcm47xxpart.c
 +++ b/drivers/mtd/bcm47xxpart.c
-@@ -28,6 +28,7 @@
+@@ -27,6 +27,7 @@
+ 
  /* Magics */
- #define CFE_MAGIC			0x43464531	/* 1EFC */
  #define BOARD_DATA_MAGIC		0x5246504D	/* MPFR */
 +#define FACTORY_MAGIC			0x59544346	/* FCTY */
  #define POT_MAGIC1			0x54544f50	/* POTT */
  #define POT_MAGIC2			0x504f		/* OP */
  #define ML_MAGIC1			0x39685a42
-@@ -113,6 +114,13 @@ static int bcm47xxpart_parse(struct mtd_
+@@ -117,6 +118,13 @@ static int bcm47xxpart_parse(struct mtd_
  					     offset, MTD_WRITEABLE);
  			continue;
  		}
diff --git a/target/linux/brcm47xx/patches-3.10/023-mtd-bcm47xxpart-find-boot-partition-by-CFE-magic.patch b/target/linux/brcm47xx/patches-3.10/023-mtd-bcm47xxpart-find-boot-partition-by-CFE-magic.patch
new file mode 100644
index 0000000000..599114bf52
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.10/023-mtd-bcm47xxpart-find-boot-partition-by-CFE-magic.patch
@@ -0,0 +1,43 @@
+From 4f8aaf72287578c846ed7ac8c6114aacbf416e45 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Sat, 21 Dec 2013 19:39:11 +0100
+Subject: [PATCH] mtd: bcm47xxpart: find boot partition by CFE magic
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Some devices have even nicer-to-recognize CFE thanks to the magic.
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+Signed-off-by: Brian Norris <computersforpeace@gmail.com>
+---
+ drivers/mtd/bcm47xxpart.c |    8 +++++---
+ 1 file changed, 5 insertions(+), 3 deletions(-)
+
+--- a/drivers/mtd/bcm47xxpart.c
++++ b/drivers/mtd/bcm47xxpart.c
+@@ -23,10 +23,11 @@
+  * Amount of bytes we read when analyzing each block of flash memory.
+  * Set it big enough to allow detecting partition and reading important data.
+  */
+-#define BCM47XXPART_BYTES_TO_READ	0x404
++#define BCM47XXPART_BYTES_TO_READ	0x4e8
+ 
+ /* Magics */
+ #define BOARD_DATA_MAGIC		0x5246504D	/* MPFR */
++#define CFE_MAGIC			0x43464531	/* 1EFC */
+ #define FACTORY_MAGIC			0x59544346	/* FCTY */
+ #define POT_MAGIC1			0x54544f50	/* POTT */
+ #define POT_MAGIC2			0x504f		/* OP */
+@@ -102,8 +103,9 @@ static int bcm47xxpart_parse(struct mtd_
+ 			continue;
+ 		}
+ 
+-		/* CFE has small NVRAM at 0x400 */
+-		if (buf[0x400 / 4] == NVRAM_HEADER) {
++		/* Magic or small NVRAM at 0x400 */
++		if ((buf[0x4e0 / 4] == CFE_MAGIC && buf[0x4e4 / 4] == CFE_MAGIC) ||
++		    (buf[0x400 / 4] == NVRAM_HEADER)) {
+ 			bcm47xxpart_add_part(&parts[curr_part++], "boot",
+ 					     offset, MTD_WRITEABLE);
+ 			continue;
diff --git a/target/linux/brcm47xx/patches-3.10/024-mtd-bcm47xxpart-alternative-MAGIC-for-board_data-par.patch b/target/linux/brcm47xx/patches-3.10/024-mtd-bcm47xxpart-alternative-MAGIC-for-board_data-par.patch
new file mode 100644
index 0000000000..5f9a5b9078
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.10/024-mtd-bcm47xxpart-alternative-MAGIC-for-board_data-par.patch
@@ -0,0 +1,52 @@
+From f0501e81fbaa51cfc8c28c60bc3fc7965fde94f4 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Sat, 21 Dec 2013 19:39:12 +0100
+Subject: [PATCH] mtd: bcm47xxpart: alternative MAGIC for board_data partition
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Some devices (like WNDR3700v3) have board_data without MPFR magic, some
+extra header or extra NVRAM around 0x100. In such case we have to look
+for another magic which is BD 0B 0D BD (BD probably stands for Board
+Data). It's located "far far away", so instead of extending buffer add
+another mtd_read.
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+Signed-off-by: Brian Norris <computersforpeace@gmail.com>
+---
+ drivers/mtd/bcm47xxpart.c |   16 ++++++++++++++++
+ 1 file changed, 16 insertions(+)
+
+--- a/drivers/mtd/bcm47xxpart.c
++++ b/drivers/mtd/bcm47xxpart.c
+@@ -27,6 +27,7 @@
+ 
+ /* Magics */
+ #define BOARD_DATA_MAGIC		0x5246504D	/* MPFR */
++#define BOARD_DATA_MAGIC2		0xBD0D0BBD
+ #define CFE_MAGIC			0x43464531	/* 1EFC */
+ #define FACTORY_MAGIC			0x59544346	/* FCTY */
+ #define POT_MAGIC1			0x54544f50	/* POTT */
+@@ -192,6 +193,21 @@ static int bcm47xxpart_parse(struct mtd_
+ 					     offset, 0);
+ 			continue;
+ 		}
++
++		/* Read middle of the block */
++		if (mtd_read(master, offset + 0x8000, 0x4,
++			     &bytes_read, (uint8_t *)buf) < 0) {
++			pr_err("mtd_read error while parsing (offset: 0x%X)!\n",
++			       offset);
++			continue;
++		}
++
++		/* Some devices (ex. WNDR3700v3) don't have a standard 'MPFR' */
++		if (buf[0x000 / 4] == BOARD_DATA_MAGIC2) {
++			bcm47xxpart_add_part(&parts[curr_part++], "board_data",
++					     offset, MTD_WRITEABLE);
++			continue;
++		}
+ 	}
+ 
+ 	/* Look for NVRAM at the end of the last block. */
diff --git a/target/linux/brcm47xx/patches-3.10/026-mtd-bcm47xxpart-find-boot-partition-by-CFE-magic.patch b/target/linux/brcm47xx/patches-3.10/026-mtd-bcm47xxpart-find-boot-partition-by-CFE-magic.patch
deleted file mode 100644
index d3fb9d3a66..0000000000
--- a/target/linux/brcm47xx/patches-3.10/026-mtd-bcm47xxpart-find-boot-partition-by-CFE-magic.patch
+++ /dev/null
@@ -1,26 +0,0 @@
---- a/drivers/mtd/bcm47xxpart.c
-+++ b/drivers/mtd/bcm47xxpart.c
-@@ -23,9 +23,10 @@
-  * Amount of bytes we read when analyzing each block of flash memory.
-  * Set it big enough to allow detecting partition and reading important data.
-  */
--#define BCM47XXPART_BYTES_TO_READ	0x404
-+#define BCM47XXPART_BYTES_TO_READ	0x4e8
- 
- /* Magics */
-+#define CFE_MAGIC			0x43464531	/* 1EFC */
- #define BOARD_DATA_MAGIC		0x5246504D	/* MPFR */
- #define POT_MAGIC1			0x54544f50	/* POTT */
- #define POT_MAGIC2			0x504f		/* OP */
-@@ -93,8 +94,9 @@ static int bcm47xxpart_parse(struct mtd_
- 			continue;
- 		}
- 
--		/* CFE has small NVRAM at 0x400 */
--		if (buf[0x400 / 4] == NVRAM_HEADER) {
-+		/* Magic or small NVRAM at 0x400 */
-+		if (buf[0x4e0 / 4] == CFE_MAGIC ||
-+		    buf[0x400 / 4] == NVRAM_HEADER) {
- 			bcm47xxpart_add_part(&parts[curr_part++], "boot",
- 					     offset, MTD_WRITEABLE);
- 			continue;
diff --git a/target/linux/brcm47xx/patches-3.10/027-mtd-bcm47xxpart-get-nvram.patch b/target/linux/brcm47xx/patches-3.10/027-mtd-bcm47xxpart-get-nvram.patch
index 4cd78c2011..086d7b3a4d 100644
--- a/target/linux/brcm47xx/patches-3.10/027-mtd-bcm47xxpart-get-nvram.patch
+++ b/target/linux/brcm47xx/patches-3.10/027-mtd-bcm47xxpart-get-nvram.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/bcm47xxpart.c
 +++ b/drivers/mtd/bcm47xxpart.c
-@@ -65,6 +65,7 @@ static int bcm47xxpart_parse(struct mtd_
+@@ -68,6 +68,7 @@ static int bcm47xxpart_parse(struct mtd_
  	int trx_part = -1;
  	int last_trx_part = -1;
  	int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
@@ -8,7 +8,7 @@
  
  	if (blocksize <= 0x10000)
  		blocksize = 0x10000;
-@@ -190,12 +191,23 @@ static int bcm47xxpart_parse(struct mtd_
+@@ -229,12 +230,23 @@ static int bcm47xxpart_parse(struct mtd_
  		if (buf[0] == NVRAM_HEADER) {
  			bcm47xxpart_add_part(&parts[curr_part++], "nvram",
  					     master->size - blocksize, 0);