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kernel: backport mtd implementation for "compatible" in "partitions" subnode

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This backports upstream support for "compatible" DT property set for the
"partitions" subnode of flash node. It allows specifying how partitions
should be created/parsed. Right now only "fixed-partitions" is
supported.

It should eventually replace our downstream "linux,part-probe" solution.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki 2018-01-11 11:59:39 +01:00
parent ef27f15330
commit bde5e7a632
18 changed files with 386 additions and 56 deletions
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121
target/linux/generic/backport-4.14/041-v4.16-0001-mtd-partitions-add-of_match_table-parser-matching.patch Normal file
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@ -0,0 +1,121 @@
From bb2192123ec70470d6ea33f138846b175403a968 Mon Sep 17 00:00:00 2001
From: Brian Norris <computersforpeace@gmail.com>
Date: Thu, 4 Jan 2018 08:05:33 +0100
Subject: [PATCH] mtd: partitions: add of_match_table parser matching
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Partition parsers can now provide an of_match_table to enable
flash<-->parser matching via device tree as documented in the
mtd/partition.txt.
It works by looking for a matching parser for every string in the
"compatibility" property (starting with the most specific one).
This support is currently limited to built-in parsers as it uses
request_module() and friends. This should be sufficient for most cases
though as compiling parsers as modules isn't a common choice.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
---
drivers/mtd/mtdpart.c | 59 ++++++++++++++++++++++++++++++++++++++++++
include/linux/mtd/partitions.h | 1 +
2 files changed, 60 insertions(+)
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -30,6 +30,7 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/err.h>
+#include <linux/of.h>
#include "mtdcore.h"
@@ -894,6 +895,45 @@ static int mtd_part_do_parse(struct mtd_
}
/**
+ * mtd_part_get_compatible_parser - find MTD parser by a compatible string
+ *
+ * @compat: compatible string describing partitions in a device tree
+ *
+ * MTD parsers can specify supported partitions by providing a table of
+ * compatibility strings. This function finds a parser that advertises support
+ * for a passed value of "compatible".
+ */
+static struct mtd_part_parser *mtd_part_get_compatible_parser(const char *compat)
+{
+ struct mtd_part_parser *p, *ret = NULL;
+
+ spin_lock(&part_parser_lock);
+
+ list_for_each_entry(p, &part_parsers, list) {
+ const struct of_device_id *matches;
+
+ matches = p->of_match_table;
+ if (!matches)
+ continue;
+
+ for (; matches->compatible[0]; matches++) {
+ if (!strcmp(matches->compatible, compat) &&
+ try_module_get(p->owner)) {
+ ret = p;
+ break;
+ }
+ }
+
+ if (ret)
+ break;
+ }
+
+ spin_unlock(&part_parser_lock);
+
+ return ret;
+}
+
+/**
* parse_mtd_partitions - parse MTD partitions
* @master: the master partition (describes whole MTD device)
* @types: names of partition parsers to try or %NULL
@@ -919,8 +959,27 @@ int parse_mtd_partitions(struct mtd_info
struct mtd_part_parser_data *data)
{
struct mtd_part_parser *parser;
+ struct device_node *np;
+ struct property *prop;
+ const char *compat;
int ret, err = 0;
+ np = of_get_child_by_name(mtd_get_of_node(master), "partitions");
+ of_property_for_each_string(np, "compatible", prop, compat) {
+ parser = mtd_part_get_compatible_parser(compat);
+ if (!parser)
+ continue;
+ ret = mtd_part_do_parse(parser, master, pparts, data);
+ if (ret > 0) {
+ of_node_put(np);
+ return 0;
+ }
+ mtd_part_parser_put(parser);
+ if (ret < 0 && !err)
+ err = ret;
+ }
+ of_node_put(np);
+
if (!types)
types = default_mtd_part_types;
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -77,6 +77,7 @@ struct mtd_part_parser {
struct list_head list;
struct module *owner;
const char *name;
+ const struct of_device_id *of_match_table;
int (*parse_fn)(struct mtd_info *, const struct mtd_partition **,
struct mtd_part_parser_data *);
void (*cleanup)(const struct mtd_partition *pparts, int nr_parts);

43
target/linux/generic/backport-4.14/041-v4.16-0002-mtd-ofpart-add-of_match_table-with-fixed-partitions.patch Normal file
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@ -0,0 +1,43 @@
From 4ac9222778478a00c7fc9d347b7ed1e0e595120d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Thu, 4 Jan 2018 08:05:34 +0100
Subject: [PATCH] mtd: ofpart: add of_match_table with "fixed-partitions"
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This allows using this parser with any flash driver that takes care of
setting of_node (using mtd_set_of_node helper) correctly. Up to now
support for "fixed-partitions" DT compatibility string was working only
with flash drivers that were specifying "ofpart" (manually or by letting
mtd use the default set of parsers).
This matches existing bindings documentation.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Brian Norris <computersforpeace@gmail.com>
Tested-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
---
drivers/mtd/ofpart.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/drivers/mtd/ofpart.c
+++ b/drivers/mtd/ofpart.c
@@ -140,9 +140,16 @@ ofpart_none:
return ret;
}
+static const struct of_device_id parse_ofpart_match_table[] = {
+ { .compatible = "fixed-partitions" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, parse_ofpart_match_table);
+
static struct mtd_part_parser ofpart_parser = {
.parse_fn = parse_ofpart_partitions,
.name = "ofpart",
+ .of_match_table = parse_ofpart_match_table,
};
static int parse_ofoldpart_partitions(struct mtd_info *master,

121
target/linux/generic/backport-4.9/066-v4.16-0001-mtd-partitions-add-of_match_table-parser-matching.patch Normal file
View file

@ -0,0 +1,121 @@
From bb2192123ec70470d6ea33f138846b175403a968 Mon Sep 17 00:00:00 2001
From: Brian Norris <computersforpeace@gmail.com>
Date: Thu, 4 Jan 2018 08:05:33 +0100
Subject: [PATCH] mtd: partitions: add of_match_table parser matching
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Partition parsers can now provide an of_match_table to enable
flash<-->parser matching via device tree as documented in the
mtd/partition.txt.
It works by looking for a matching parser for every string in the
"compatibility" property (starting with the most specific one).
This support is currently limited to built-in parsers as it uses
request_module() and friends. This should be sufficient for most cases
though as compiling parsers as modules isn't a common choice.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
---
drivers/mtd/mtdpart.c | 59 ++++++++++++++++++++++++++++++++++++++++++
include/linux/mtd/partitions.h | 1 +
2 files changed, 60 insertions(+)
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -30,6 +30,7 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/err.h>
+#include <linux/of.h>
#include "mtdcore.h"
@@ -886,6 +887,45 @@ static int mtd_part_do_parse(struct mtd_
}
/**
+ * mtd_part_get_compatible_parser - find MTD parser by a compatible string
+ *
+ * @compat: compatible string describing partitions in a device tree
+ *
+ * MTD parsers can specify supported partitions by providing a table of
+ * compatibility strings. This function finds a parser that advertises support
+ * for a passed value of "compatible".
+ */
+static struct mtd_part_parser *mtd_part_get_compatible_parser(const char *compat)
+{
+ struct mtd_part_parser *p, *ret = NULL;
+
+ spin_lock(&part_parser_lock);
+
+ list_for_each_entry(p, &part_parsers, list) {
+ const struct of_device_id *matches;
+
+ matches = p->of_match_table;
+ if (!matches)
+ continue;
+
+ for (; matches->compatible[0]; matches++) {
+ if (!strcmp(matches->compatible, compat) &&
+ try_module_get(p->owner)) {
+ ret = p;
+ break;
+ }
+ }
+
+ if (ret)
+ break;
+ }
+
+ spin_unlock(&part_parser_lock);
+
+ return ret;
+}
+
+/**
* parse_mtd_partitions - parse MTD partitions
* @master: the master partition (describes whole MTD device)
* @types: names of partition parsers to try or %NULL
@@ -911,8 +951,27 @@ int parse_mtd_partitions(struct mtd_info
struct mtd_part_parser_data *data)
{
struct mtd_part_parser *parser;
+ struct device_node *np;
+ struct property *prop;
+ const char *compat;
int ret, err = 0;
+ np = of_get_child_by_name(mtd_get_of_node(master), "partitions");
+ of_property_for_each_string(np, "compatible", prop, compat) {
+ parser = mtd_part_get_compatible_parser(compat);
+ if (!parser)
+ continue;
+ ret = mtd_part_do_parse(parser, master, pparts, data);
+ if (ret > 0) {
+ of_node_put(np);
+ return 0;
+ }
+ mtd_part_parser_put(parser);
+ if (ret < 0 && !err)
+ err = ret;
+ }
+ of_node_put(np);
+
if (!types)
types = default_mtd_part_types;
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -77,6 +77,7 @@ struct mtd_part_parser {
struct list_head list;
struct module *owner;
const char *name;
+ const struct of_device_id *of_match_table;
int (*parse_fn)(struct mtd_info *, const struct mtd_partition **,
struct mtd_part_parser_data *);
void (*cleanup)(const struct mtd_partition *pparts, int nr_parts);

43
target/linux/generic/backport-4.9/066-v4.16-0002-mtd-ofpart-add-of_match_table-with-fixed-partitions.patch Normal file
View file

@ -0,0 +1,43 @@
From 4ac9222778478a00c7fc9d347b7ed1e0e595120d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Thu, 4 Jan 2018 08:05:34 +0100
Subject: [PATCH] mtd: ofpart: add of_match_table with "fixed-partitions"
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This allows using this parser with any flash driver that takes care of
setting of_node (using mtd_set_of_node helper) correctly. Up to now
support for "fixed-partitions" DT compatibility string was working only
with flash drivers that were specifying "ofpart" (manually or by letting
mtd use the default set of parsers).
This matches existing bindings documentation.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Brian Norris <computersforpeace@gmail.com>
Tested-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
---
drivers/mtd/ofpart.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/drivers/mtd/ofpart.c
+++ b/drivers/mtd/ofpart.c
@@ -140,9 +140,16 @@ ofpart_none:
return ret;
}
+static const struct of_device_id parse_ofpart_match_table[] = {
+ { .compatible = "fixed-partitions" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, parse_ofpart_match_table);
+
static struct mtd_part_parser ofpart_parser = {
.parse_fn = parse_ofpart_partitions,
.name = "ofpart",
+ .of_match_table = parse_ofpart_match_table,
};
static int parse_ofoldpart_partitions(struct mtd_info *master,

16
target/linux/generic/pending-4.14/160-mtd-part-add-generic-parsing-of-linux-part-probe.patch
View file

@ -102,9 +102,9 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
#include <linux/mtd/partitions.h>
+#include <linux/of.h>
#include <linux/err.h>
#include <linux/of.h>
#include "mtdcore.h"
@@ -863,6 +864,32 @@ void deregister_mtd_parser(struct mtd_pa
@@ -864,6 +865,32 @@ void deregister_mtd_parser(struct mtd_pa
EXPORT_SYMBOL_GPL(deregister_mtd_parser);
/*
@ -137,9 +137,9 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
* Do not forget to update 'parse_mtd_partitions()' kerneldoc comment if you
* are changing this array!
*/
@@ -920,6 +947,13 @@ int parse_mtd_partitions(struct mtd_info
{
struct mtd_part_parser *parser;
@@ -963,6 +990,13 @@ int parse_mtd_partitions(struct mtd_info
struct property *prop;
const char *compat;
int ret, err = 0;
+ const char *const *types_of = NULL;
+
@ -149,9 +149,9 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+ types = types_of;
+ }
if (!types)
types = default_mtd_part_types;
@@ -945,6 +979,7 @@ int parse_mtd_partitions(struct mtd_info
np = of_get_child_by_name(mtd_get_of_node(master), "partitions");
of_property_for_each_string(np, "compatible", prop, compat) {
@@ -1004,6 +1038,7 @@ int parse_mtd_partitions(struct mtd_info
if (ret < 0 && !err)
err = ret;
}

13
target/linux/generic/pending-4.14/400-mtd-add-rootfs-split-support.patch
View file

@ -37,20 +37,21 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
depends on m
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -29,10 +29,12 @@
@@ -29,11 +29,13 @@
#include <linux/kmod.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
+#include <linux/magic.h>
#include <linux/of.h>
#include <linux/err.h>
#include <linux/of.h>
#include "mtdcore.h"
+#include "mtdsplit/mtdsplit.h"
/* Our partition linked list */
static LIST_HEAD(mtd_partitions);
@@ -52,6 +54,8 @@ struct mtd_part {
@@ -53,6 +55,8 @@ struct mtd_part {
struct list_head list;
};
@ -59,7 +60,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
/*
* Given a pointer to the MTD object in the mtd_part structure, we can retrieve
* the pointer to that structure.
@@ -686,6 +690,7 @@ int mtd_add_partition(struct mtd_info *p
@@ -687,6 +691,7 @@ int mtd_add_partition(struct mtd_info *p
mutex_unlock(&mtd_partitions_mutex);
add_mtd_device(&new->mtd);
@ -67,7 +68,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
mtd_add_partition_attrs(new);
@@ -764,6 +769,35 @@ int mtd_del_partition(struct mtd_info *m
@@ -765,6 +770,35 @@ int mtd_del_partition(struct mtd_info *m
}
EXPORT_SYMBOL_GPL(mtd_del_partition);
@ -103,7 +104,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
/*
* This function, given a master MTD object and a partition table, creates
* and registers slave MTD objects which are bound to the master according to
@@ -795,6 +829,7 @@ int add_mtd_partitions(struct mtd_info *
@@ -796,6 +830,7 @@ int add_mtd_partitions(struct mtd_info *
mutex_unlock(&mtd_partitions_mutex);
add_mtd_device(&slave->mtd);
@ -113,7 +114,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
mtd_parse_part(slave, parts[i].types);
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -109,5 +109,7 @@ int mtd_add_partition(struct mtd_info *m
@@ -110,5 +110,7 @@ int mtd_add_partition(struct mtd_info *m
long long offset, long long length);
int mtd_del_partition(struct mtd_info *master, int partno);
uint64_t mtd_get_device_size(const struct mtd_info *mtd);

6
target/linux/generic/pending-4.14/401-mtd-add-support-for-different-partition-parser-types.patch
View file

@ -9,7 +9,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -1034,6 +1034,62 @@ void mtd_part_parser_cleanup(struct mtd_
@@ -1093,6 +1093,62 @@ void mtd_part_parser_cleanup(struct mtd_
}
}
@ -90,7 +90,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
struct mtd_part_parser {
struct list_head list;
struct module *owner;
@@ -80,6 +83,7 @@ struct mtd_part_parser {
@@ -81,6 +84,7 @@ struct mtd_part_parser {
int (*parse_fn)(struct mtd_info *, const struct mtd_partition **,
struct mtd_part_parser_data *);
void (*cleanup)(const struct mtd_partition *pparts, int nr_parts);
@ -98,7 +98,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
};
/* Container for passing around a set of parsed partitions */
@@ -112,4 +116,9 @@ uint64_t mtd_get_device_size(const struc
@@ -113,4 +117,9 @@ uint64_t mtd_get_device_size(const struc
extern void __weak arch_split_mtd_part(struct mtd_info *master,
const char *name, int offset, int size);

6
target/linux/generic/pending-4.14/402-mtd-use-typed-mtd-parsers-for-rootfs-and-firmware-split.patch
View file

@ -10,7 +10,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -769,6 +769,36 @@ int mtd_del_partition(struct mtd_info *m
@@ -770,6 +770,36 @@ int mtd_del_partition(struct mtd_info *m
}
EXPORT_SYMBOL_GPL(mtd_del_partition);
@ -47,7 +47,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
#ifdef CONFIG_MTD_SPLIT_FIRMWARE_NAME
#define SPLIT_FIRMWARE_NAME CONFIG_MTD_SPLIT_FIRMWARE_NAME
#else
@@ -777,6 +807,7 @@ EXPORT_SYMBOL_GPL(mtd_del_partition);
@@ -778,6 +808,7 @@ EXPORT_SYMBOL_GPL(mtd_del_partition);
static void split_firmware(struct mtd_info *master, struct mtd_part *part)
{
@ -55,7 +55,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
}
void __weak arch_split_mtd_part(struct mtd_info *master, const char *name,
@@ -791,6 +822,12 @@ static void mtd_partition_split(struct m
@@ -792,6 +823,12 @@ static void mtd_partition_split(struct m
if (rootfs_found)
return;

6
target/linux/generic/pending-4.14/404-mtd-add-more-helper-functions.patch
View file

@ -11,7 +11,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -799,6 +799,17 @@ run_parsers_by_type(struct mtd_part *sla
@@ -800,6 +800,17 @@ run_parsers_by_type(struct mtd_part *sla
return nr_parts;
}
@ -29,7 +29,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
#ifdef CONFIG_MTD_SPLIT_FIRMWARE_NAME
#define SPLIT_FIRMWARE_NAME CONFIG_MTD_SPLIT_FIRMWARE_NAME
#else
@@ -1144,6 +1155,24 @@ int mtd_is_partition(const struct mtd_in
@@ -1203,6 +1214,24 @@ int mtd_is_partition(const struct mtd_in
}
EXPORT_SYMBOL_GPL(mtd_is_partition);
@ -83,7 +83,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
if (mtd->writesize_shift)
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -114,6 +114,8 @@ int mtd_is_partition(const struct mtd_in
@@ -115,6 +115,8 @@ int mtd_is_partition(const struct mtd_in
int mtd_add_partition(struct mtd_info *master, const char *name,
long long offset, long long length);
int mtd_del_partition(struct mtd_info *master, int partno);

8
target/linux/generic/pending-4.14/411-mtd-partial_eraseblock_write.patch
View file

@ -10,7 +10,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -36,6 +36,8 @@
@@ -37,6 +37,8 @@
#include "mtdcore.h"
#include "mtdsplit/mtdsplit.h"
@ -19,7 +19,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
/* Our partition linked list */
static LIST_HEAD(mtd_partitions);
static DEFINE_MUTEX(mtd_partitions_mutex);
@@ -241,13 +243,61 @@ static int part_erase(struct mtd_info *m
@@ -242,13 +244,61 @@ static int part_erase(struct mtd_info *m
struct mtd_part *part = mtd_to_part(mtd);
int ret;
@ -81,7 +81,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
return ret;
}
@@ -255,6 +305,25 @@ void mtd_erase_callback(struct erase_inf
@@ -256,6 +306,25 @@ void mtd_erase_callback(struct erase_inf
{
if (instr->mtd->_erase == part_erase) {
struct mtd_part *part = mtd_to_part(instr->mtd);
@ -107,7 +107,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
instr->fail_addr -= part->offset;
@@ -598,19 +667,22 @@ static struct mtd_part *allocate_partiti
@@ -599,19 +668,22 @@ static struct mtd_part *allocate_partiti
remainder = do_div(tmp, wr_alignment);
if ((slave->mtd.flags & MTD_WRITEABLE) && remainder) {
/* Doesn't start on a boundary of major erase size */

2
target/linux/generic/pending-4.14/412-mtd-partial_eraseblock_unlock.patch
View file

@ -20,7 +20,7 @@ Signed-off-by: Tim Harvey <tharvey@gateworks.com>
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -343,7 +343,16 @@ static int part_lock(struct mtd_info *mt
@@ -344,7 +344,16 @@ static int part_lock(struct mtd_info *mt
static int part_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
struct mtd_part *part = mtd_to_part(mtd);

16
target/linux/generic/pending-4.9/160-mtd-part-add-generic-parsing-of-linux-part-probe.patch
View file

@ -112,9 +112,9 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
#include <linux/mtd/partitions.h>
+#include <linux/of.h>
#include <linux/err.h>
#include <linux/of.h>
#include "mtdcore.h"
@@ -855,6 +856,42 @@ void deregister_mtd_parser(struct mtd_pa
@@ -856,6 +857,42 @@ void deregister_mtd_parser(struct mtd_pa
EXPORT_SYMBOL_GPL(deregister_mtd_parser);
/*
@ -157,9 +157,9 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
* Do not forget to update 'parse_mtd_partitions()' kerneldoc comment if you
* are changing this array!
*/
@@ -912,6 +949,13 @@ int parse_mtd_partitions(struct mtd_info
{
struct mtd_part_parser *parser;
@@ -955,6 +992,13 @@ int parse_mtd_partitions(struct mtd_info
struct property *prop;
const char *compat;
int ret, err = 0;
+ const char *const *types_of = NULL;
+
@ -169,9 +169,9 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+ types = types_of;
+ }
if (!types)
types = default_mtd_part_types;
@@ -937,6 +981,7 @@ int parse_mtd_partitions(struct mtd_info
np = of_get_child_by_name(mtd_get_of_node(master), "partitions");
of_property_for_each_string(np, "compatible", prop, compat) {
@@ -996,6 +1040,7 @@ int parse_mtd_partitions(struct mtd_info
if (ret < 0 && !err)
err = ret;
}

13
target/linux/generic/pending-4.9/400-mtd-add-rootfs-split-support.patch
View file

@ -37,20 +37,21 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
depends on m
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -29,10 +29,12 @@
@@ -29,11 +29,13 @@
#include <linux/kmod.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
+#include <linux/magic.h>
#include <linux/of.h>
#include <linux/err.h>
#include <linux/of.h>
#include "mtdcore.h"
+#include "mtdsplit/mtdsplit.h"
/* Our partition linked list */
static LIST_HEAD(mtd_partitions);
@@ -52,6 +54,8 @@ struct mtd_part {
@@ -53,6 +55,8 @@ struct mtd_part {
struct list_head list;
};
@ -59,7 +60,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
/*
* Given a pointer to the MTD object in the mtd_part structure, we can retrieve
* the pointer to that structure.
@@ -678,6 +682,7 @@ int mtd_add_partition(struct mtd_info *p
@@ -679,6 +683,7 @@ int mtd_add_partition(struct mtd_info *p
mutex_unlock(&mtd_partitions_mutex);
add_mtd_device(&new->mtd);
@ -67,7 +68,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
mtd_add_partition_attrs(new);
@@ -756,6 +761,35 @@ int mtd_del_partition(struct mtd_info *m
@@ -757,6 +762,35 @@ int mtd_del_partition(struct mtd_info *m
}
EXPORT_SYMBOL_GPL(mtd_del_partition);
@ -103,7 +104,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
/*
* This function, given a master MTD object and a partition table, creates
* and registers slave MTD objects which are bound to the master according to
@@ -787,6 +821,7 @@ int add_mtd_partitions(struct mtd_info *
@@ -788,6 +822,7 @@ int add_mtd_partitions(struct mtd_info *
mutex_unlock(&mtd_partitions_mutex);
add_mtd_device(&slave->mtd);
@ -113,7 +114,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
mtd_parse_part(slave, parts[i].types);
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -109,5 +109,7 @@ int mtd_add_partition(struct mtd_info *m
@@ -110,5 +110,7 @@ int mtd_add_partition(struct mtd_info *m
long long offset, long long length);
int mtd_del_partition(struct mtd_info *master, int partno);
uint64_t mtd_get_device_size(const struct mtd_info *mtd);

6
target/linux/generic/pending-4.9/401-mtd-add-support-for-different-partition-parser-types.patch
View file

@ -9,7 +9,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -1036,6 +1036,62 @@ void mtd_part_parser_cleanup(struct mtd_
@@ -1095,6 +1095,62 @@ void mtd_part_parser_cleanup(struct mtd_
}
}
@ -90,7 +90,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
struct mtd_part_parser {
struct list_head list;
struct module *owner;
@@ -80,6 +83,7 @@ struct mtd_part_parser {
@@ -81,6 +84,7 @@ struct mtd_part_parser {
int (*parse_fn)(struct mtd_info *, const struct mtd_partition **,
struct mtd_part_parser_data *);
void (*cleanup)(const struct mtd_partition *pparts, int nr_parts);
@ -98,7 +98,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
};
/* Container for passing around a set of parsed partitions */
@@ -112,4 +116,9 @@ uint64_t mtd_get_device_size(const struc
@@ -113,4 +117,9 @@ uint64_t mtd_get_device_size(const struc
extern void __weak arch_split_mtd_part(struct mtd_info *master,
const char *name, int offset, int size);

6
target/linux/generic/pending-4.9/402-mtd-use-typed-mtd-parsers-for-rootfs-and-firmware-split.patch
View file

@ -10,7 +10,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -761,6 +761,36 @@ int mtd_del_partition(struct mtd_info *m
@@ -762,6 +762,36 @@ int mtd_del_partition(struct mtd_info *m
}
EXPORT_SYMBOL_GPL(mtd_del_partition);
@ -47,7 +47,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
#ifdef CONFIG_MTD_SPLIT_FIRMWARE_NAME
#define SPLIT_FIRMWARE_NAME CONFIG_MTD_SPLIT_FIRMWARE_NAME
#else
@@ -769,6 +799,7 @@ EXPORT_SYMBOL_GPL(mtd_del_partition);
@@ -770,6 +800,7 @@ EXPORT_SYMBOL_GPL(mtd_del_partition);
static void split_firmware(struct mtd_info *master, struct mtd_part *part)
{
@ -55,7 +55,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
}
void __weak arch_split_mtd_part(struct mtd_info *master, const char *name,
@@ -783,6 +814,12 @@ static void mtd_partition_split(struct m
@@ -784,6 +815,12 @@ static void mtd_partition_split(struct m
if (rootfs_found)
return;

6
target/linux/generic/pending-4.9/404-mtd-add-more-helper-functions.patch
View file

@ -11,7 +11,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -791,6 +791,17 @@ run_parsers_by_type(struct mtd_part *sla
@@ -792,6 +792,17 @@ run_parsers_by_type(struct mtd_part *sla
return nr_parts;
}
@ -29,7 +29,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
#ifdef CONFIG_MTD_SPLIT_FIRMWARE_NAME
#define SPLIT_FIRMWARE_NAME CONFIG_MTD_SPLIT_FIRMWARE_NAME
#else
@@ -1146,6 +1157,24 @@ int mtd_is_partition(const struct mtd_in
@@ -1205,6 +1216,24 @@ int mtd_is_partition(const struct mtd_in
}
EXPORT_SYMBOL_GPL(mtd_is_partition);
@ -83,7 +83,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
if (mtd->writesize_shift)
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -114,6 +114,8 @@ int mtd_is_partition(const struct mtd_in
@@ -115,6 +115,8 @@ int mtd_is_partition(const struct mtd_in
int mtd_add_partition(struct mtd_info *master, const char *name,
long long offset, long long length);
int mtd_del_partition(struct mtd_info *master, int partno);

8
target/linux/generic/pending-4.9/411-mtd-partial_eraseblock_write.patch
View file

@ -10,7 +10,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -36,6 +36,8 @@
@@ -37,6 +37,8 @@
#include "mtdcore.h"
#include "mtdsplit/mtdsplit.h"
@ -19,7 +19,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
/* Our partition linked list */
static LIST_HEAD(mtd_partitions);
static DEFINE_MUTEX(mtd_partitions_mutex);
@@ -241,13 +243,61 @@ static int part_erase(struct mtd_info *m
@@ -242,13 +244,61 @@ static int part_erase(struct mtd_info *m
struct mtd_part *part = mtd_to_part(mtd);
int ret;
@ -81,7 +81,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
return ret;
}
@@ -255,6 +305,25 @@ void mtd_erase_callback(struct erase_inf
@@ -256,6 +306,25 @@ void mtd_erase_callback(struct erase_inf
{
if (instr->mtd->_erase == part_erase) {
struct mtd_part *part = mtd_to_part(instr->mtd);
@ -107,7 +107,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
instr->fail_addr -= part->offset;
@@ -590,19 +659,22 @@ static struct mtd_part *allocate_partiti
@@ -591,19 +660,22 @@ static struct mtd_part *allocate_partiti
remainder = do_div(tmp, wr_alignment);
if ((slave->mtd.flags & MTD_WRITEABLE) && remainder) {
/* Doesn't start on a boundary of major erase size */

2
target/linux/generic/pending-4.9/412-mtd-partial_eraseblock_unlock.patch
View file

@ -20,7 +20,7 @@ Signed-off-by: Tim Harvey <tharvey@gateworks.com>
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -343,7 +343,16 @@ static int part_lock(struct mtd_info *mt
@@ -344,7 +344,16 @@ static int part_lock(struct mtd_info *mt
static int part_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
struct mtd_part *part = mtd_to_part(mtd);