Use 0xx prefix for accepted patches.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
--- /dev/null
+From b522d7b0ebe3539340c2a6d46d787ae3d33bcb92 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 10 Jan 2017 23:15:24 +0100
+Subject: [PATCH] mtd: bcm47xxpart: move TRX parsing code to separated function
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This change simplifies main parsing loop logic a bit. In future it may
+be useful for moving TRX support to separated module / parser (if we
+implement support for them at some point).
+Finally parsing TRX at the end puts us in a better position as we have
+better flash layout knowledge. It may be useful e.g. if it appears there
+is more than 1 TRX partition.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Acked-by: Marek Vasut <marek.vasut@gmail.com>
+Signed-off-by: Brian Norris <computersforpeace@gmail.com>
+---
+ drivers/mtd/bcm47xxpart.c | 121 ++++++++++++++++++++++++++++------------------
+ 1 file changed, 74 insertions(+), 47 deletions(-)
+
+--- a/drivers/mtd/bcm47xxpart.c
++++ b/drivers/mtd/bcm47xxpart.c
+@@ -83,6 +83,67 @@ out_default:
+ return "rootfs";
+ }
+
++static int bcm47xxpart_parse_trx(struct mtd_info *master,
++ struct mtd_partition *trx,
++ struct mtd_partition *parts,
++ size_t parts_len)
++{
++ struct trx_header header;
++ size_t bytes_read;
++ int curr_part = 0;
++ int i, err;
++
++ if (parts_len < 3) {
++ pr_warn("No enough space to add TRX partitions!\n");
++ return -ENOMEM;
++ }
++
++ err = mtd_read(master, trx->offset, sizeof(header), &bytes_read,
++ (uint8_t *)&header);
++ if (err && !mtd_is_bitflip(err)) {
++ pr_err("mtd_read error while reading TRX header: %d\n", err);
++ return err;
++ }
++
++ i = 0;
++
++ /* We have LZMA loader if offset[2] points to sth */
++ if (header.offset[2]) {
++ bcm47xxpart_add_part(&parts[curr_part++], "loader",
++ trx->offset + header.offset[i], 0);
++ i++;
++ }
++
++ if (header.offset[i]) {
++ bcm47xxpart_add_part(&parts[curr_part++], "linux",
++ trx->offset + header.offset[i], 0);
++ i++;
++ }
++
++ if (header.offset[i]) {
++ size_t offset = trx->offset + header.offset[i];
++ const char *name = bcm47xxpart_trx_data_part_name(master,
++ offset);
++
++ bcm47xxpart_add_part(&parts[curr_part++], name, offset, 0);
++ i++;
++ }
++
++ /*
++ * Assume that every partition ends at the beginning of the one it is
++ * followed by.
++ */
++ for (i = 0; i < curr_part; i++) {
++ u64 next_part_offset = (i < curr_part - 1) ?
++ parts[i + 1].offset :
++ trx->offset + trx->size;
++
++ parts[i].size = next_part_offset - parts[i].offset;
++ }
++
++ return curr_part;
++}
++
+ static int bcm47xxpart_parse(struct mtd_info *master,
+ struct mtd_partition **pparts,
+ struct mtd_part_parser_data *data)
+@@ -93,9 +154,7 @@ static int bcm47xxpart_parse(struct mtd_
+ size_t bytes_read;
+ uint32_t offset;
+ uint32_t blocksize = master->erasesize;
+- struct trx_header *trx;
+ int trx_part = -1;
+- int last_trx_part = -1;
+ int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
+ int err;
+
+@@ -182,54 +241,14 @@ static int bcm47xxpart_parse(struct mtd_
+
+ /* TRX */
+ if (buf[0x000 / 4] == TRX_MAGIC) {
+- if (BCM47XXPART_MAX_PARTS - curr_part < 4) {
+- pr_warn("Not enough partitions left to register trx, scanning stopped!\n");
+- break;
+- }
+-
+- trx = (struct trx_header *)buf;
++ struct trx_header *trx;
+
+ trx_part = curr_part;
+ bcm47xxpart_add_part(&parts[curr_part++], "firmware",
+ offset, 0);
+
+- i = 0;
+- /* We have LZMA loader if offset[2] points to sth */
+- if (trx->offset[2]) {
+- bcm47xxpart_add_part(&parts[curr_part++],
+- "loader",
+- offset + trx->offset[i],
+- 0);
+- i++;
+- }
+-
+- if (trx->offset[i]) {
+- bcm47xxpart_add_part(&parts[curr_part++],
+- "linux",
+- offset + trx->offset[i],
+- 0);
+- i++;
+- }
+-
+- /*
+- * Pure rootfs size is known and can be calculated as:
+- * trx->length - trx->offset[i]. We don't fill it as
+- * we want to have jffs2 (overlay) in the same mtd.
+- */
+- if (trx->offset[i]) {
+- const char *name;
+-
+- name = bcm47xxpart_trx_data_part_name(master, offset + trx->offset[i]);
+- bcm47xxpart_add_part(&parts[curr_part++],
+- name,
+- offset + trx->offset[i],
+- 0);
+- i++;
+- }
+-
+- last_trx_part = curr_part - 1;
+-
+ /* Jump to the end of TRX */
++ trx = (struct trx_header *)buf;
+ offset = roundup(offset + trx->length, blocksize);
+ /* Next loop iteration will increase the offset */
+ offset -= blocksize;
+@@ -307,9 +326,17 @@ static int bcm47xxpart_parse(struct mtd_
+ parts[i + 1].offset : master->size;
+
+ parts[i].size = next_part_offset - parts[i].offset;
+- if (i == last_trx_part && trx_part >= 0)
+- parts[trx_part].size = next_part_offset -
+- parts[trx_part].offset;
++ }
++
++ /* If there was TRX parse it now */
++ if (trx_part >= 0) {
++ int num_parts;
++
++ num_parts = bcm47xxpart_parse_trx(master, &parts[trx_part],
++ parts + curr_part,
++ BCM47XXPART_MAX_PARTS - curr_part);
++ if (num_parts > 0)
++ curr_part += num_parts;
+ }
+
+ *pparts = parts;
--- /dev/null
+From 89a0d9a9f1941a086a82bc7cd73d275cec98ba14 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 10 Jan 2017 23:15:25 +0100
+Subject: [PATCH] mtd: bcm47xxpart: support layouts with multiple TRX
+ partitions
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Some devices may have an extra TRX partition used as failsafe one. If
+we detect such partition we should set a proper name for it and don't
+parse it.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Acked-by: Marek Vasut <marek.vasut@gmail.com>
+Signed-off-by: Brian Norris <computersforpeace@gmail.com>
+---
+ drivers/mtd/bcm47xxpart.c | 56 ++++++++++++++++++++++++++++++++++++++---------
+ 1 file changed, 46 insertions(+), 10 deletions(-)
+
+--- a/drivers/mtd/bcm47xxpart.c
++++ b/drivers/mtd/bcm47xxpart.c
+@@ -9,6 +9,7 @@
+ *
+ */
+
++#include <linux/bcm47xx_nvram.h>
+ #include <linux/module.h>
+ #include <linux/kernel.h>
+ #include <linux/slab.h>
+@@ -144,6 +145,30 @@ static int bcm47xxpart_parse_trx(struct
+ return curr_part;
+ }
+
++/**
++ * bcm47xxpart_bootpartition - gets index of TRX partition used by bootloader
++ *
++ * Some devices may have more than one TRX partition. In such case one of them
++ * is the main one and another a failsafe one. Bootloader may fallback to the
++ * failsafe firmware if it detects corruption of the main image.
++ *
++ * This function provides info about currently used TRX partition. It's the one
++ * containing kernel started by the bootloader.
++ */
++static int bcm47xxpart_bootpartition(void)
++{
++ char buf[4];
++ int bootpartition;
++
++ /* Check CFE environment variable */
++ if (bcm47xx_nvram_getenv("bootpartition", buf, sizeof(buf)) > 0) {
++ if (!kstrtoint(buf, 0, &bootpartition))
++ return bootpartition;
++ }
++
++ return 0;
++}
++
+ static int bcm47xxpart_parse(struct mtd_info *master,
+ struct mtd_partition **pparts,
+ struct mtd_part_parser_data *data)
+@@ -154,7 +179,8 @@ static int bcm47xxpart_parse(struct mtd_
+ size_t bytes_read;
+ uint32_t offset;
+ uint32_t blocksize = master->erasesize;
+- int trx_part = -1;
++ int trx_parts[2]; /* Array with indexes of TRX partitions */
++ int trx_num = 0; /* Number of found TRX partitions */
+ int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
+ int err;
+
+@@ -243,7 +269,11 @@ static int bcm47xxpart_parse(struct mtd_
+ if (buf[0x000 / 4] == TRX_MAGIC) {
+ struct trx_header *trx;
+
+- trx_part = curr_part;
++ if (trx_num >= ARRAY_SIZE(trx_parts))
++ pr_warn("No enough space to store another TRX found at 0x%X\n",
++ offset);
++ else
++ trx_parts[trx_num++] = curr_part;
+ bcm47xxpart_add_part(&parts[curr_part++], "firmware",
+ offset, 0);
+
+@@ -329,14 +359,20 @@ static int bcm47xxpart_parse(struct mtd_
+ }
+
+ /* If there was TRX parse it now */
+- if (trx_part >= 0) {
+- int num_parts;
++ for (i = 0; i < trx_num; i++) {
++ struct mtd_partition *trx = &parts[trx_parts[i]];
+
+- num_parts = bcm47xxpart_parse_trx(master, &parts[trx_part],
+- parts + curr_part,
+- BCM47XXPART_MAX_PARTS - curr_part);
+- if (num_parts > 0)
+- curr_part += num_parts;
++ if (i == bcm47xxpart_bootpartition()) {
++ int num_parts;
++
++ num_parts = bcm47xxpart_parse_trx(master, trx,
++ parts + curr_part,
++ BCM47XXPART_MAX_PARTS - curr_part);
++ if (num_parts > 0)
++ curr_part += num_parts;
++ } else {
++ trx->name = "failsafe";
++ }
+ }
+
+ *pparts = parts;
+++ /dev/null
-From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
-Subject: [PATCH 1/2] mtd: bcm47xxpart: move TRX parsing code to separated
- function
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-This change simplifies main parsing loop logic a bit. In future it may
-be useful for moving TRX support to separated module / parser (if we
-implement support for them at some point).
-Finally parsing TRX at the end puts us in a better position as we have
-better flash layout knowledge. It may be useful e.g. if it appears there
-is more than 1 TRX partition.
-
-Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
----
- drivers/mtd/bcm47xxpart.c | 121 ++++++++++++++++++++++++++++------------------
- 1 file changed, 74 insertions(+), 47 deletions(-)
-
---- a/drivers/mtd/bcm47xxpart.c
-+++ b/drivers/mtd/bcm47xxpart.c
-@@ -83,6 +83,67 @@ out_default:
- return "rootfs";
- }
-
-+static int bcm47xxpart_parse_trx(struct mtd_info *master,
-+ struct mtd_partition *trx,
-+ struct mtd_partition *parts,
-+ size_t parts_len)
-+{
-+ struct trx_header header;
-+ size_t bytes_read;
-+ int curr_part = 0;
-+ int i, err;
-+
-+ if (parts_len < 3) {
-+ pr_warn("No enough space to add TRX partitions!\n");
-+ return -ENOMEM;
-+ }
-+
-+ err = mtd_read(master, trx->offset, sizeof(header), &bytes_read,
-+ (uint8_t *)&header);
-+ if (err && !mtd_is_bitflip(err)) {
-+ pr_err("mtd_read error while reading TRX header: %d\n", err);
-+ return err;
-+ }
-+
-+ i = 0;
-+
-+ /* We have LZMA loader if offset[2] points to sth */
-+ if (header.offset[2]) {
-+ bcm47xxpart_add_part(&parts[curr_part++], "loader",
-+ trx->offset + header.offset[i], 0);
-+ i++;
-+ }
-+
-+ if (header.offset[i]) {
-+ bcm47xxpart_add_part(&parts[curr_part++], "linux",
-+ trx->offset + header.offset[i], 0);
-+ i++;
-+ }
-+
-+ if (header.offset[i]) {
-+ size_t offset = trx->offset + header.offset[i];
-+ const char *name = bcm47xxpart_trx_data_part_name(master,
-+ offset);
-+
-+ bcm47xxpart_add_part(&parts[curr_part++], name, offset, 0);
-+ i++;
-+ }
-+
-+ /*
-+ * Assume that every partition ends at the beginning of the one it is
-+ * followed by.
-+ */
-+ for (i = 0; i < curr_part; i++) {
-+ u64 next_part_offset = (i < curr_part - 1) ?
-+ parts[i + 1].offset :
-+ trx->offset + trx->size;
-+
-+ parts[i].size = next_part_offset - parts[i].offset;
-+ }
-+
-+ return curr_part;
-+}
-+
- static int bcm47xxpart_parse(struct mtd_info *master,
- struct mtd_partition **pparts,
- struct mtd_part_parser_data *data)
-@@ -93,9 +154,7 @@ static int bcm47xxpart_parse(struct mtd_
- size_t bytes_read;
- uint32_t offset;
- uint32_t blocksize = master->erasesize;
-- struct trx_header *trx;
- int trx_part = -1;
-- int last_trx_part = -1;
- int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
- int err;
-
-@@ -182,54 +241,14 @@ static int bcm47xxpart_parse(struct mtd_
-
- /* TRX */
- if (buf[0x000 / 4] == TRX_MAGIC) {
-- if (BCM47XXPART_MAX_PARTS - curr_part < 4) {
-- pr_warn("Not enough partitions left to register trx, scanning stopped!\n");
-- break;
-- }
--
-- trx = (struct trx_header *)buf;
-+ struct trx_header *trx;
-
- trx_part = curr_part;
- bcm47xxpart_add_part(&parts[curr_part++], "firmware",
- offset, 0);
-
-- i = 0;
-- /* We have LZMA loader if offset[2] points to sth */
-- if (trx->offset[2]) {
-- bcm47xxpart_add_part(&parts[curr_part++],
-- "loader",
-- offset + trx->offset[i],
-- 0);
-- i++;
-- }
--
-- if (trx->offset[i]) {
-- bcm47xxpart_add_part(&parts[curr_part++],
-- "linux",
-- offset + trx->offset[i],
-- 0);
-- i++;
-- }
--
-- /*
-- * Pure rootfs size is known and can be calculated as:
-- * trx->length - trx->offset[i]. We don't fill it as
-- * we want to have jffs2 (overlay) in the same mtd.
-- */
-- if (trx->offset[i]) {
-- const char *name;
--
-- name = bcm47xxpart_trx_data_part_name(master, offset + trx->offset[i]);
-- bcm47xxpart_add_part(&parts[curr_part++],
-- name,
-- offset + trx->offset[i],
-- 0);
-- i++;
-- }
--
-- last_trx_part = curr_part - 1;
--
- /* Jump to the end of TRX */
-+ trx = (struct trx_header *)buf;
- offset = roundup(offset + trx->length, blocksize);
- /* Next loop iteration will increase the offset */
- offset -= blocksize;
-@@ -307,9 +326,17 @@ static int bcm47xxpart_parse(struct mtd_
- parts[i + 1].offset : master->size;
-
- parts[i].size = next_part_offset - parts[i].offset;
-- if (i == last_trx_part && trx_part >= 0)
-- parts[trx_part].size = next_part_offset -
-- parts[trx_part].offset;
-+ }
-+
-+ /* If there was TRX parse it now */
-+ if (trx_part >= 0) {
-+ int num_parts;
-+
-+ num_parts = bcm47xxpart_parse_trx(master, &parts[trx_part],
-+ parts + curr_part,
-+ BCM47XXPART_MAX_PARTS - curr_part);
-+ if (num_parts > 0)
-+ curr_part += num_parts;
- }
-
- *pparts = parts;
+++ /dev/null
-From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
-Subject: [PATCH 2/2] mtd: bcm47xxpart: support layouts with multiple TRX
- partitions
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Some devices may have an extra TRX partition used as failsafe one. If
-we detect such partition we should set a proper name for it and don't
-parse it.
-
-Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
----
- drivers/mtd/bcm47xxpart.c | 56 ++++++++++++++++++++++++++++++++++++++---------
- 1 file changed, 46 insertions(+), 10 deletions(-)
-
---- a/drivers/mtd/bcm47xxpart.c
-+++ b/drivers/mtd/bcm47xxpart.c
-@@ -9,6 +9,7 @@
- *
- */
-
-+#include <linux/bcm47xx_nvram.h>
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/slab.h>
-@@ -144,6 +145,30 @@ static int bcm47xxpart_parse_trx(struct
- return curr_part;
- }
-
-+/**
-+ * bcm47xxpart_bootpartition - gets index of TRX partition used by bootloader
-+ *
-+ * Some devices may have more than one TRX partition. In such case one of them
-+ * is the main one and another a failsafe one. Bootloader may fallback to the
-+ * failsafe firmware if it detects corruption of the main image.
-+ *
-+ * This function provides info about currently used TRX partition. It's the one
-+ * containing kernel started by the bootloader.
-+ */
-+static int bcm47xxpart_bootpartition(void)
-+{
-+ char buf[4];
-+ int bootpartition;
-+
-+ /* Check CFE environment variable */
-+ if (bcm47xx_nvram_getenv("bootpartition", buf, sizeof(buf)) > 0) {
-+ if (!kstrtoint(buf, 0, &bootpartition))
-+ return bootpartition;
-+ }
-+
-+ return 0;
-+}
-+
- static int bcm47xxpart_parse(struct mtd_info *master,
- struct mtd_partition **pparts,
- struct mtd_part_parser_data *data)
-@@ -154,7 +179,8 @@ static int bcm47xxpart_parse(struct mtd_
- size_t bytes_read;
- uint32_t offset;
- uint32_t blocksize = master->erasesize;
-- int trx_part = -1;
-+ int trx_parts[2]; /* Array with indexes of TRX partitions */
-+ int trx_num = 0; /* Number of found TRX partitions */
- int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
- int err;
-
-@@ -243,7 +269,11 @@ static int bcm47xxpart_parse(struct mtd_
- if (buf[0x000 / 4] == TRX_MAGIC) {
- struct trx_header *trx;
-
-- trx_part = curr_part;
-+ if (trx_num >= ARRAY_SIZE(trx_parts))
-+ pr_warn("No enough space to store another TRX found at 0x%X\n",
-+ offset);
-+ else
-+ trx_parts[trx_num++] = curr_part;
- bcm47xxpart_add_part(&parts[curr_part++], "firmware",
- offset, 0);
-
-@@ -329,14 +359,20 @@ static int bcm47xxpart_parse(struct mtd_
- }
-
- /* If there was TRX parse it now */
-- if (trx_part >= 0) {
-- int num_parts;
-+ for (i = 0; i < trx_num; i++) {
-+ struct mtd_partition *trx = &parts[trx_parts[i]];
-
-- num_parts = bcm47xxpart_parse_trx(master, &parts[trx_part],
-- parts + curr_part,
-- BCM47XXPART_MAX_PARTS - curr_part);
-- if (num_parts > 0)
-- curr_part += num_parts;
-+ if (i == bcm47xxpart_bootpartition()) {
-+ int num_parts;
-+
-+ num_parts = bcm47xxpart_parse_trx(master, trx,
-+ parts + curr_part,
-+ BCM47XXPART_MAX_PARTS - curr_part);
-+ if (num_parts > 0)
-+ curr_part += num_parts;
-+ } else {
-+ trx->name = "failsafe";
-+ }
- }
-
- *pparts = parts;
--- /dev/null
+From b522d7b0ebe3539340c2a6d46d787ae3d33bcb92 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 10 Jan 2017 23:15:24 +0100
+Subject: [PATCH] mtd: bcm47xxpart: move TRX parsing code to separated function
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This change simplifies main parsing loop logic a bit. In future it may
+be useful for moving TRX support to separated module / parser (if we
+implement support for them at some point).
+Finally parsing TRX at the end puts us in a better position as we have
+better flash layout knowledge. It may be useful e.g. if it appears there
+is more than 1 TRX partition.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Acked-by: Marek Vasut <marek.vasut@gmail.com>
+Signed-off-by: Brian Norris <computersforpeace@gmail.com>
+---
+ drivers/mtd/bcm47xxpart.c | 121 ++++++++++++++++++++++++++++------------------
+ 1 file changed, 74 insertions(+), 47 deletions(-)
+
+--- a/drivers/mtd/bcm47xxpart.c
++++ b/drivers/mtd/bcm47xxpart.c
+@@ -83,6 +83,67 @@ out_default:
+ return "rootfs";
+ }
+
++static int bcm47xxpart_parse_trx(struct mtd_info *master,
++ struct mtd_partition *trx,
++ struct mtd_partition *parts,
++ size_t parts_len)
++{
++ struct trx_header header;
++ size_t bytes_read;
++ int curr_part = 0;
++ int i, err;
++
++ if (parts_len < 3) {
++ pr_warn("No enough space to add TRX partitions!\n");
++ return -ENOMEM;
++ }
++
++ err = mtd_read(master, trx->offset, sizeof(header), &bytes_read,
++ (uint8_t *)&header);
++ if (err && !mtd_is_bitflip(err)) {
++ pr_err("mtd_read error while reading TRX header: %d\n", err);
++ return err;
++ }
++
++ i = 0;
++
++ /* We have LZMA loader if offset[2] points to sth */
++ if (header.offset[2]) {
++ bcm47xxpart_add_part(&parts[curr_part++], "loader",
++ trx->offset + header.offset[i], 0);
++ i++;
++ }
++
++ if (header.offset[i]) {
++ bcm47xxpart_add_part(&parts[curr_part++], "linux",
++ trx->offset + header.offset[i], 0);
++ i++;
++ }
++
++ if (header.offset[i]) {
++ size_t offset = trx->offset + header.offset[i];
++ const char *name = bcm47xxpart_trx_data_part_name(master,
++ offset);
++
++ bcm47xxpart_add_part(&parts[curr_part++], name, offset, 0);
++ i++;
++ }
++
++ /*
++ * Assume that every partition ends at the beginning of the one it is
++ * followed by.
++ */
++ for (i = 0; i < curr_part; i++) {
++ u64 next_part_offset = (i < curr_part - 1) ?
++ parts[i + 1].offset :
++ trx->offset + trx->size;
++
++ parts[i].size = next_part_offset - parts[i].offset;
++ }
++
++ return curr_part;
++}
++
+ static int bcm47xxpart_parse(struct mtd_info *master,
+ const struct mtd_partition **pparts,
+ struct mtd_part_parser_data *data)
+@@ -93,9 +154,7 @@ static int bcm47xxpart_parse(struct mtd_
+ size_t bytes_read;
+ uint32_t offset;
+ uint32_t blocksize = master->erasesize;
+- struct trx_header *trx;
+ int trx_part = -1;
+- int last_trx_part = -1;
+ int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
+ int err;
+
+@@ -182,54 +241,14 @@ static int bcm47xxpart_parse(struct mtd_
+
+ /* TRX */
+ if (buf[0x000 / 4] == TRX_MAGIC) {
+- if (BCM47XXPART_MAX_PARTS - curr_part < 4) {
+- pr_warn("Not enough partitions left to register trx, scanning stopped!\n");
+- break;
+- }
+-
+- trx = (struct trx_header *)buf;
++ struct trx_header *trx;
+
+ trx_part = curr_part;
+ bcm47xxpart_add_part(&parts[curr_part++], "firmware",
+ offset, 0);
+
+- i = 0;
+- /* We have LZMA loader if offset[2] points to sth */
+- if (trx->offset[2]) {
+- bcm47xxpart_add_part(&parts[curr_part++],
+- "loader",
+- offset + trx->offset[i],
+- 0);
+- i++;
+- }
+-
+- if (trx->offset[i]) {
+- bcm47xxpart_add_part(&parts[curr_part++],
+- "linux",
+- offset + trx->offset[i],
+- 0);
+- i++;
+- }
+-
+- /*
+- * Pure rootfs size is known and can be calculated as:
+- * trx->length - trx->offset[i]. We don't fill it as
+- * we want to have jffs2 (overlay) in the same mtd.
+- */
+- if (trx->offset[i]) {
+- const char *name;
+-
+- name = bcm47xxpart_trx_data_part_name(master, offset + trx->offset[i]);
+- bcm47xxpart_add_part(&parts[curr_part++],
+- name,
+- offset + trx->offset[i],
+- 0);
+- i++;
+- }
+-
+- last_trx_part = curr_part - 1;
+-
+ /* Jump to the end of TRX */
++ trx = (struct trx_header *)buf;
+ offset = roundup(offset + trx->length, blocksize);
+ /* Next loop iteration will increase the offset */
+ offset -= blocksize;
+@@ -307,9 +326,17 @@ static int bcm47xxpart_parse(struct mtd_
+ parts[i + 1].offset : master->size;
+
+ parts[i].size = next_part_offset - parts[i].offset;
+- if (i == last_trx_part && trx_part >= 0)
+- parts[trx_part].size = next_part_offset -
+- parts[trx_part].offset;
++ }
++
++ /* If there was TRX parse it now */
++ if (trx_part >= 0) {
++ int num_parts;
++
++ num_parts = bcm47xxpart_parse_trx(master, &parts[trx_part],
++ parts + curr_part,
++ BCM47XXPART_MAX_PARTS - curr_part);
++ if (num_parts > 0)
++ curr_part += num_parts;
+ }
+
+ *pparts = parts;
--- /dev/null
+From 89a0d9a9f1941a086a82bc7cd73d275cec98ba14 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 10 Jan 2017 23:15:25 +0100
+Subject: [PATCH] mtd: bcm47xxpart: support layouts with multiple TRX
+ partitions
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Some devices may have an extra TRX partition used as failsafe one. If
+we detect such partition we should set a proper name for it and don't
+parse it.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Acked-by: Marek Vasut <marek.vasut@gmail.com>
+Signed-off-by: Brian Norris <computersforpeace@gmail.com>
+---
+ drivers/mtd/bcm47xxpart.c | 56 ++++++++++++++++++++++++++++++++++++++---------
+ 1 file changed, 46 insertions(+), 10 deletions(-)
+
+--- a/drivers/mtd/bcm47xxpart.c
++++ b/drivers/mtd/bcm47xxpart.c
+@@ -9,6 +9,7 @@
+ *
+ */
+
++#include <linux/bcm47xx_nvram.h>
+ #include <linux/module.h>
+ #include <linux/kernel.h>
+ #include <linux/slab.h>
+@@ -144,6 +145,30 @@ static int bcm47xxpart_parse_trx(struct
+ return curr_part;
+ }
+
++/**
++ * bcm47xxpart_bootpartition - gets index of TRX partition used by bootloader
++ *
++ * Some devices may have more than one TRX partition. In such case one of them
++ * is the main one and another a failsafe one. Bootloader may fallback to the
++ * failsafe firmware if it detects corruption of the main image.
++ *
++ * This function provides info about currently used TRX partition. It's the one
++ * containing kernel started by the bootloader.
++ */
++static int bcm47xxpart_bootpartition(void)
++{
++ char buf[4];
++ int bootpartition;
++
++ /* Check CFE environment variable */
++ if (bcm47xx_nvram_getenv("bootpartition", buf, sizeof(buf)) > 0) {
++ if (!kstrtoint(buf, 0, &bootpartition))
++ return bootpartition;
++ }
++
++ return 0;
++}
++
+ static int bcm47xxpart_parse(struct mtd_info *master,
+ const struct mtd_partition **pparts,
+ struct mtd_part_parser_data *data)
+@@ -154,7 +179,8 @@ static int bcm47xxpart_parse(struct mtd_
+ size_t bytes_read;
+ uint32_t offset;
+ uint32_t blocksize = master->erasesize;
+- int trx_part = -1;
++ int trx_parts[2]; /* Array with indexes of TRX partitions */
++ int trx_num = 0; /* Number of found TRX partitions */
+ int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
+ int err;
+
+@@ -243,7 +269,11 @@ static int bcm47xxpart_parse(struct mtd_
+ if (buf[0x000 / 4] == TRX_MAGIC) {
+ struct trx_header *trx;
+
+- trx_part = curr_part;
++ if (trx_num >= ARRAY_SIZE(trx_parts))
++ pr_warn("No enough space to store another TRX found at 0x%X\n",
++ offset);
++ else
++ trx_parts[trx_num++] = curr_part;
+ bcm47xxpart_add_part(&parts[curr_part++], "firmware",
+ offset, 0);
+
+@@ -329,14 +359,20 @@ static int bcm47xxpart_parse(struct mtd_
+ }
+
+ /* If there was TRX parse it now */
+- if (trx_part >= 0) {
+- int num_parts;
++ for (i = 0; i < trx_num; i++) {
++ struct mtd_partition *trx = &parts[trx_parts[i]];
+
+- num_parts = bcm47xxpart_parse_trx(master, &parts[trx_part],
+- parts + curr_part,
+- BCM47XXPART_MAX_PARTS - curr_part);
+- if (num_parts > 0)
+- curr_part += num_parts;
++ if (i == bcm47xxpart_bootpartition()) {
++ int num_parts;
++
++ num_parts = bcm47xxpart_parse_trx(master, trx,
++ parts + curr_part,
++ BCM47XXPART_MAX_PARTS - curr_part);
++ if (num_parts > 0)
++ curr_part += num_parts;
++ } else {
++ trx->name = "failsafe";
++ }
+ }
+
+ *pparts = parts;
+++ /dev/null
-From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
-Subject: [PATCH 1/2] mtd: bcm47xxpart: move TRX parsing code to separated
- function
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-This change simplifies main parsing loop logic a bit. In future it may
-be useful for moving TRX support to separated module / parser (if we
-implement support for them at some point).
-Finally parsing TRX at the end puts us in a better position as we have
-better flash layout knowledge. It may be useful e.g. if it appears there
-is more than 1 TRX partition.
-
-Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
----
- drivers/mtd/bcm47xxpart.c | 121 ++++++++++++++++++++++++++++------------------
- 1 file changed, 74 insertions(+), 47 deletions(-)
-
---- a/drivers/mtd/bcm47xxpart.c
-+++ b/drivers/mtd/bcm47xxpart.c
-@@ -83,6 +83,67 @@ out_default:
- return "rootfs";
- }
-
-+static int bcm47xxpart_parse_trx(struct mtd_info *master,
-+ struct mtd_partition *trx,
-+ struct mtd_partition *parts,
-+ size_t parts_len)
-+{
-+ struct trx_header header;
-+ size_t bytes_read;
-+ int curr_part = 0;
-+ int i, err;
-+
-+ if (parts_len < 3) {
-+ pr_warn("No enough space to add TRX partitions!\n");
-+ return -ENOMEM;
-+ }
-+
-+ err = mtd_read(master, trx->offset, sizeof(header), &bytes_read,
-+ (uint8_t *)&header);
-+ if (err && !mtd_is_bitflip(err)) {
-+ pr_err("mtd_read error while reading TRX header: %d\n", err);
-+ return err;
-+ }
-+
-+ i = 0;
-+
-+ /* We have LZMA loader if offset[2] points to sth */
-+ if (header.offset[2]) {
-+ bcm47xxpart_add_part(&parts[curr_part++], "loader",
-+ trx->offset + header.offset[i], 0);
-+ i++;
-+ }
-+
-+ if (header.offset[i]) {
-+ bcm47xxpart_add_part(&parts[curr_part++], "linux",
-+ trx->offset + header.offset[i], 0);
-+ i++;
-+ }
-+
-+ if (header.offset[i]) {
-+ size_t offset = trx->offset + header.offset[i];
-+ const char *name = bcm47xxpart_trx_data_part_name(master,
-+ offset);
-+
-+ bcm47xxpart_add_part(&parts[curr_part++], name, offset, 0);
-+ i++;
-+ }
-+
-+ /*
-+ * Assume that every partition ends at the beginning of the one it is
-+ * followed by.
-+ */
-+ for (i = 0; i < curr_part; i++) {
-+ u64 next_part_offset = (i < curr_part - 1) ?
-+ parts[i + 1].offset :
-+ trx->offset + trx->size;
-+
-+ parts[i].size = next_part_offset - parts[i].offset;
-+ }
-+
-+ return curr_part;
-+}
-+
- static int bcm47xxpart_parse(struct mtd_info *master,
- const struct mtd_partition **pparts,
- struct mtd_part_parser_data *data)
-@@ -93,9 +154,7 @@ static int bcm47xxpart_parse(struct mtd_
- size_t bytes_read;
- uint32_t offset;
- uint32_t blocksize = master->erasesize;
-- struct trx_header *trx;
- int trx_part = -1;
-- int last_trx_part = -1;
- int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
- int err;
-
-@@ -182,54 +241,14 @@ static int bcm47xxpart_parse(struct mtd_
-
- /* TRX */
- if (buf[0x000 / 4] == TRX_MAGIC) {
-- if (BCM47XXPART_MAX_PARTS - curr_part < 4) {
-- pr_warn("Not enough partitions left to register trx, scanning stopped!\n");
-- break;
-- }
--
-- trx = (struct trx_header *)buf;
-+ struct trx_header *trx;
-
- trx_part = curr_part;
- bcm47xxpart_add_part(&parts[curr_part++], "firmware",
- offset, 0);
-
-- i = 0;
-- /* We have LZMA loader if offset[2] points to sth */
-- if (trx->offset[2]) {
-- bcm47xxpart_add_part(&parts[curr_part++],
-- "loader",
-- offset + trx->offset[i],
-- 0);
-- i++;
-- }
--
-- if (trx->offset[i]) {
-- bcm47xxpart_add_part(&parts[curr_part++],
-- "linux",
-- offset + trx->offset[i],
-- 0);
-- i++;
-- }
--
-- /*
-- * Pure rootfs size is known and can be calculated as:
-- * trx->length - trx->offset[i]. We don't fill it as
-- * we want to have jffs2 (overlay) in the same mtd.
-- */
-- if (trx->offset[i]) {
-- const char *name;
--
-- name = bcm47xxpart_trx_data_part_name(master, offset + trx->offset[i]);
-- bcm47xxpart_add_part(&parts[curr_part++],
-- name,
-- offset + trx->offset[i],
-- 0);
-- i++;
-- }
--
-- last_trx_part = curr_part - 1;
--
- /* Jump to the end of TRX */
-+ trx = (struct trx_header *)buf;
- offset = roundup(offset + trx->length, blocksize);
- /* Next loop iteration will increase the offset */
- offset -= blocksize;
-@@ -307,9 +326,17 @@ static int bcm47xxpart_parse(struct mtd_
- parts[i + 1].offset : master->size;
-
- parts[i].size = next_part_offset - parts[i].offset;
-- if (i == last_trx_part && trx_part >= 0)
-- parts[trx_part].size = next_part_offset -
-- parts[trx_part].offset;
-+ }
-+
-+ /* If there was TRX parse it now */
-+ if (trx_part >= 0) {
-+ int num_parts;
-+
-+ num_parts = bcm47xxpart_parse_trx(master, &parts[trx_part],
-+ parts + curr_part,
-+ BCM47XXPART_MAX_PARTS - curr_part);
-+ if (num_parts > 0)
-+ curr_part += num_parts;
- }
-
- *pparts = parts;
+++ /dev/null
-From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
-Subject: [PATCH 2/2] mtd: bcm47xxpart: support layouts with multiple TRX
- partitions
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Some devices may have an extra TRX partition used as failsafe one. If
-we detect such partition we should set a proper name for it and don't
-parse it.
-
-Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
----
- drivers/mtd/bcm47xxpart.c | 56 ++++++++++++++++++++++++++++++++++++++---------
- 1 file changed, 46 insertions(+), 10 deletions(-)
-
---- a/drivers/mtd/bcm47xxpart.c
-+++ b/drivers/mtd/bcm47xxpart.c
-@@ -9,6 +9,7 @@
- *
- */
-
-+#include <linux/bcm47xx_nvram.h>
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/slab.h>
-@@ -144,6 +145,30 @@ static int bcm47xxpart_parse_trx(struct
- return curr_part;
- }
-
-+/**
-+ * bcm47xxpart_bootpartition - gets index of TRX partition used by bootloader
-+ *
-+ * Some devices may have more than one TRX partition. In such case one of them
-+ * is the main one and another a failsafe one. Bootloader may fallback to the
-+ * failsafe firmware if it detects corruption of the main image.
-+ *
-+ * This function provides info about currently used TRX partition. It's the one
-+ * containing kernel started by the bootloader.
-+ */
-+static int bcm47xxpart_bootpartition(void)
-+{
-+ char buf[4];
-+ int bootpartition;
-+
-+ /* Check CFE environment variable */
-+ if (bcm47xx_nvram_getenv("bootpartition", buf, sizeof(buf)) > 0) {
-+ if (!kstrtoint(buf, 0, &bootpartition))
-+ return bootpartition;
-+ }
-+
-+ return 0;
-+}
-+
- static int bcm47xxpart_parse(struct mtd_info *master,
- const struct mtd_partition **pparts,
- struct mtd_part_parser_data *data)
-@@ -154,7 +179,8 @@ static int bcm47xxpart_parse(struct mtd_
- size_t bytes_read;
- uint32_t offset;
- uint32_t blocksize = master->erasesize;
-- int trx_part = -1;
-+ int trx_parts[2]; /* Array with indexes of TRX partitions */
-+ int trx_num = 0; /* Number of found TRX partitions */
- int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
- int err;
-
-@@ -243,7 +269,11 @@ static int bcm47xxpart_parse(struct mtd_
- if (buf[0x000 / 4] == TRX_MAGIC) {
- struct trx_header *trx;
-
-- trx_part = curr_part;
-+ if (trx_num >= ARRAY_SIZE(trx_parts))
-+ pr_warn("No enough space to store another TRX found at 0x%X\n",
-+ offset);
-+ else
-+ trx_parts[trx_num++] = curr_part;
- bcm47xxpart_add_part(&parts[curr_part++], "firmware",
- offset, 0);
-
-@@ -329,14 +359,20 @@ static int bcm47xxpart_parse(struct mtd_
- }
-
- /* If there was TRX parse it now */
-- if (trx_part >= 0) {
-- int num_parts;
-+ for (i = 0; i < trx_num; i++) {
-+ struct mtd_partition *trx = &parts[trx_parts[i]];
-
-- num_parts = bcm47xxpart_parse_trx(master, &parts[trx_part],
-- parts + curr_part,
-- BCM47XXPART_MAX_PARTS - curr_part);
-- if (num_parts > 0)
-- curr_part += num_parts;
-+ if (i == bcm47xxpart_bootpartition()) {
-+ int num_parts;
-+
-+ num_parts = bcm47xxpart_parse_trx(master, trx,
-+ parts + curr_part,
-+ BCM47XXPART_MAX_PARTS - curr_part);
-+ if (num_parts > 0)
-+ curr_part += num_parts;
-+ } else {
-+ trx->name = "failsafe";
-+ }
- }
-
- *pparts = parts;
projects / openwrt / openwrt.git / commitdiff