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brcm47xx: update mtd drivers

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This backports some patches from linux upstream.

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

SVN-Revision: 39249
This commit is contained in:
Hauke Mehrtens 2014-01-12 18:50:45 +00:00
parent 9821ce8ed6
commit e585841044
7 changed files with 154 additions and 35 deletions
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30
target/linux/brcm47xx/patches-3.10/020-mtd-bcm47xxpart-handle-malloc-failures.patch Normal file
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@ -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;

16
target/linux/brcm47xx/patches-3.10/029-mtd-bcm47xxpart_detect_block_aligned_Squashfs_partition.patch → target/linux/brcm47xx/patches-3.10/021-mtd-bcm47xxpart-detect-block-aligned-Squashfs-partit.patch
View File

@ -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;
}

18
target/linux/brcm47xx/patches-3.10/030-mtd-bcm47xxpart_detect_factory_partition.patch → target/linux/brcm47xx/patches-3.10/022-mtd-bcm47xxpart-detect-factory-partition.patch
View File

@ -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;
}

43
target/linux/brcm47xx/patches-3.10/023-mtd-bcm47xxpart-find-boot-partition-by-CFE-magic.patch Normal file
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@ -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;

52
target/linux/brcm47xx/patches-3.10/024-mtd-bcm47xxpart-alternative-MAGIC-for-board_data-par.patch Normal file
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@ -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. */

26
target/linux/brcm47xx/patches-3.10/026-mtd-bcm47xxpart-find-boot-partition-by-CFE-magic.patch
View File

@ -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;

4
target/linux/brcm47xx/patches-3.10/027-mtd-bcm47xxpart-get-nvram.patch
View File

@ -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);