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authorRafał Miłecki <zajec5@gmail.com>2015-12-07 09:31:52 +0000
committerRafał Miłecki <zajec5@gmail.com>2015-12-07 09:31:52 +0000
commit3333f75cafc6d45491eeb2b104a01bf8cb90cd78 (patch)
tree14e93f25f45cff9c2282d267a54ee2a37d3a9a5c /target/linux/generic/patches-4.4
parente4fd0a41fd4653b22b9dda18c0073369ccae07b4 (diff)
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kernel: add bcm47xxpart patches sent for 4.5 merge window
This replaces old bcm53xx patch for scanning whole flash and makes bcm47xxpart compatible with NAND. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> SVN-Revision: 47800
Diffstat (limited to 'target/linux/generic/patches-4.4')
-rw-r--r--target/linux/generic/patches-4.4/143-mtd-bcm47xxpart-limit-scanned-flash-area-on-BCM47XX-.patch33
-rw-r--r--target/linux/generic/patches-4.4/144-mtd-bcm47xxpart-don-t-fail-because-of-bit-flips.patch97
-rw-r--r--target/linux/generic/patches-4.4/431-mtd-bcm47xxpart-support-for-Xiaomi-specific-board_da.patch2
-rw-r--r--target/linux/generic/patches-4.4/432-mtd-bcm47xxpart-detect-T_Meter-partition.patch2
4 files changed, 132 insertions, 2 deletions
diff --git a/target/linux/generic/patches-4.4/143-mtd-bcm47xxpart-limit-scanned-flash-area-on-BCM47XX-.patch b/target/linux/generic/patches-4.4/143-mtd-bcm47xxpart-limit-scanned-flash-area-on-BCM47XX-.patch
new file mode 100644
index 0000000..aa31514
--- /dev/null
+++ b/target/linux/generic/patches-4.4/143-mtd-bcm47xxpart-limit-scanned-flash-area-on-BCM47XX-.patch
@@ -0,0 +1,33 @@
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Sat, 5 Dec 2015 02:03:32 +0100
+Subject: [PATCH] mtd: bcm47xxpart: limit scanned flash area on BCM47XX (MIPS)
+ only
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+We allowed using bcm47xxpart on BCM5301X arch with commit:
+9e3afa5f5c7 ("mtd: bcm47xxpart: allow enabling on ARCH_BCM_5301X")
+
+BCM5301X devices may contain some partitions in higher memory, e.g.
+Netgear R8000 has board_data at 0x2600000. To detect them we should
+use size limit on MIPS only.
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+---
+ drivers/mtd/bcm47xxpart.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/mtd/bcm47xxpart.c
++++ b/drivers/mtd/bcm47xxpart.c
+@@ -118,8 +118,8 @@ static int bcm47xxpart_parse(struct mtd_info *master,
+ /* Parse block by block looking for magics */
+ for (offset = 0; offset <= master->size - blocksize;
+ offset += blocksize) {
+- /* Nothing more in higher memory */
+- if (offset >= 0x2000000)
++ /* Nothing more in higher memory on BCM47XX (MIPS) */
++ if (config_enabled(CONFIG_BCM47XX) && offset >= 0x2000000)
+ break;
+
+ if (curr_part >= BCM47XXPART_MAX_PARTS) {
diff --git a/target/linux/generic/patches-4.4/144-mtd-bcm47xxpart-don-t-fail-because-of-bit-flips.patch b/target/linux/generic/patches-4.4/144-mtd-bcm47xxpart-don-t-fail-because-of-bit-flips.patch
new file mode 100644
index 0000000..f9e81f9
--- /dev/null
+++ b/target/linux/generic/patches-4.4/144-mtd-bcm47xxpart-don-t-fail-because-of-bit-flips.patch
@@ -0,0 +1,97 @@
+From dfe4b4c732365fc1d83c2d2fd9cc18054ae850b7 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Sun, 6 Dec 2015 11:24:05 +0100
+Subject: [PATCH] mtd: bcm47xxpart: don't fail because of bit-flips
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Bit-flip errors may occur on NAND flashes and are harmless. Handle them
+gracefully as read content is still reliable and can be parsed.
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+---
+ drivers/mtd/bcm47xxpart.c | 38 ++++++++++++++++++++++----------------
+ 1 file changed, 22 insertions(+), 16 deletions(-)
+
+diff --git a/drivers/mtd/bcm47xxpart.c b/drivers/mtd/bcm47xxpart.c
+index 4450e74..1ab3451 100644
+--- a/drivers/mtd/bcm47xxpart.c
++++ b/drivers/mtd/bcm47xxpart.c
+@@ -66,11 +66,13 @@ static const char *bcm47xxpart_trx_data_part_name(struct mtd_info *master,
+ {
+ uint32_t buf;
+ size_t bytes_read;
++ int err;
+
+- if (mtd_read(master, offset, sizeof(buf), &bytes_read,
+- (uint8_t *)&buf) < 0) {
+- pr_err("mtd_read error while parsing (offset: 0x%X)!\n",
+- offset);
++ err = mtd_read(master, offset, sizeof(buf), &bytes_read,
++ (uint8_t *)&buf);
++ if (err && !mtd_is_bitflip(err)) {
++ pr_err("mtd_read error while parsing (offset: 0x%X): %d\n",
++ offset, err);
+ goto out_default;
+ }
+
+@@ -95,6 +97,7 @@ static int bcm47xxpart_parse(struct mtd_info *master,
+ int trx_part = -1;
+ int last_trx_part = -1;
+ int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
++ int err;
+
+ /*
+ * Some really old flashes (like AT45DB*) had smaller erasesize-s, but
+@@ -128,10 +131,11 @@ static int bcm47xxpart_parse(struct mtd_info *master,
+ }
+
+ /* Read beginning of the block */
+- if (mtd_read(master, offset, BCM47XXPART_BYTES_TO_READ,
+- &bytes_read, (uint8_t *)buf) < 0) {
+- pr_err("mtd_read error while parsing (offset: 0x%X)!\n",
+- offset);
++ err = mtd_read(master, offset, BCM47XXPART_BYTES_TO_READ,
++ &bytes_read, (uint8_t *)buf);
++ if (err && !mtd_is_bitflip(err)) {
++ pr_err("mtd_read error while parsing (offset: 0x%X): %d\n",
++ offset, err);
+ continue;
+ }
+
+@@ -254,10 +258,11 @@ static int bcm47xxpart_parse(struct mtd_info *master,
+ }
+
+ /* 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);
++ err = mtd_read(master, offset + 0x8000, 0x4, &bytes_read,
++ (uint8_t *)buf);
++ if (err && !mtd_is_bitflip(err)) {
++ pr_err("mtd_read error while parsing (offset: 0x%X): %d\n",
++ offset, err);
+ continue;
+ }
+
+@@ -277,10 +282,11 @@ static int bcm47xxpart_parse(struct mtd_info *master,
+ }
+
+ offset = master->size - possible_nvram_sizes[i];
+- if (mtd_read(master, offset, 0x4, &bytes_read,
+- (uint8_t *)buf) < 0) {
+- pr_err("mtd_read error while reading at offset 0x%X!\n",
+- offset);
++ err = mtd_read(master, offset, 0x4, &bytes_read,
++ (uint8_t *)buf);
++ if (err && !mtd_is_bitflip(err)) {
++ pr_err("mtd_read error while reading (offset 0x%X): %d\n",
++ offset, err);
+ continue;
+ }
+
+--
+1.8.4.5
+
diff --git a/target/linux/generic/patches-4.4/431-mtd-bcm47xxpart-support-for-Xiaomi-specific-board_da.patch b/target/linux/generic/patches-4.4/431-mtd-bcm47xxpart-support-for-Xiaomi-specific-board_da.patch
index a30e698..bc3e502 100644
--- a/target/linux/generic/patches-4.4/431-mtd-bcm47xxpart-support-for-Xiaomi-specific-board_da.patch
+++ b/target/linux/generic/patches-4.4/431-mtd-bcm47xxpart-support-for-Xiaomi-specific-board_da.patch
@@ -22,7 +22,7 @@ Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
#define CFE_MAGIC 0x43464531 /* 1EFC */
#define FACTORY_MAGIC 0x59544346 /* FCTY */
#define NVRAM_HEADER 0x48534C46 /* FLSH */
-@@ -262,7 +263,8 @@ static int bcm47xxpart_parse(struct mtd_
+@@ -267,7 +268,8 @@ static int bcm47xxpart_parse(struct mtd_
}
/* Some devices (ex. WNDR3700v3) don't have a standard 'MPFR' */
diff --git a/target/linux/generic/patches-4.4/432-mtd-bcm47xxpart-detect-T_Meter-partition.patch b/target/linux/generic/patches-4.4/432-mtd-bcm47xxpart-detect-T_Meter-partition.patch
index 1edc995..2b04286 100644
--- a/target/linux/generic/patches-4.4/432-mtd-bcm47xxpart-detect-T_Meter-partition.patch
+++ b/target/linux/generic/patches-4.4/432-mtd-bcm47xxpart-detect-T_Meter-partition.patch
@@ -24,7 +24,7 @@ Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
#define ML_MAGIC1 0x39685a42
#define ML_MAGIC2 0x26594131
#define TRX_MAGIC 0x30524448
-@@ -176,6 +177,15 @@ static int bcm47xxpart_parse(struct mtd_
+@@ -180,6 +181,15 @@ static int bcm47xxpart_parse(struct mtd_
MTD_WRITEABLE);
continue;
}