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kernel: move old "rootfs" splitter into separated file

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This will simplify removing it in the future.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 42828
This commit is contained in:
Rafał Miłecki 2014-10-07 07:35:17 +00:00
parent 2818493e82
commit b9d3767ada
7 changed files with 95 additions and 73 deletions
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59
target/linux/generic/patches-3.14/400-mtd-add-rootfs-split-support.patch
View file

@ -1,6 +1,6 @@
--- a/drivers/mtd/Kconfig
+++ b/drivers/mtd/Kconfig
@@ -12,6 +12,33 @@ menuconfig MTD
@@ -12,6 +12,28 @@ menuconfig MTD
if MTD
@ -10,11 +10,6 @@
+ bool "Automatically set 'rootfs' partition to be root filesystem"
+ default y
+
+config MTD_ROOTFS_SPLIT
+ bool "Automatically split 'rootfs' partition for squashfs"
+ select MTD_SPLIT
+ default y
+
+config MTD_SPLIT_FIRMWARE
+ bool "Automatically split firmware partition for kernel+rootfs"
+ default y
@ -125,7 +120,7 @@
int mtd_del_partition(struct mtd_info *master, int partno)
{
struct mtd_part *slave, *next;
@@ -614,6 +628,122 @@ int mtd_del_partition(struct mtd_info *m
@@ -614,6 +628,74 @@ int mtd_del_partition(struct mtd_info *m
}
EXPORT_SYMBOL_GPL(mtd_del_partition);
@ -140,47 +135,6 @@
+ return len;
+}
+
+static int split_squashfs(struct mtd_info *master, int offset, int *split_offset)
+{
+ size_t squashfs_len;
+ int len, ret;
+
+ ret = mtd_get_squashfs_len(master, offset, &squashfs_len);
+ if (ret)
+ return ret;
+
+ len = mtd_pad_erasesize(master, offset, squashfs_len);
+ *split_offset = offset + len;
+
+ return 0;
+}
+
+static void split_rootfs_data(struct mtd_info *master, struct mtd_part *part)
+{
+ unsigned int split_offset = 0;
+ unsigned int split_size;
+ int ret;
+
+ ret = split_squashfs(master, part->offset, &split_offset);
+ if (ret)
+ return;
+
+ if (split_offset <= 0)
+ return;
+
+ if (config_enabled(CONFIG_MTD_SPLIT_SQUASHFS_ROOT))
+ pr_err("Dedicated partitioner didn't create \"rootfs_data\" partition, please fill a bug report!\n");
+ else
+ pr_warn("Support for built-in \"rootfs_data\" splitter will be removed, please use CONFIG_MTD_SPLIT_SQUASHFS_ROOT\n");
+
+ split_size = part->mtd.size - (split_offset - part->offset);
+ printk(KERN_INFO "mtd: partition \"%s\" created automatically, ofs=0x%x, len=0x%x\n",
+ ROOTFS_SPLIT_NAME, split_offset, split_size);
+
+ __mtd_add_partition(master, ROOTFS_SPLIT_NAME, split_offset,
+ split_size, false);
+}
+
+#define UBOOT_MAGIC 0x27051956
+
+static void split_uimage(struct mtd_info *master, struct mtd_part *part)
@ -231,13 +185,6 @@
+ if (rootfs_found)
+ return;
+
+ if (!strcmp(part->mtd.name, "rootfs")) {
+ rootfs_found = 1;
+
+ if (config_enabled(CONFIG_MTD_ROOTFS_SPLIT))
+ split_rootfs_data(master, part);
+ }
+
+ if (!strcmp(part->mtd.name, SPLIT_FIRMWARE_NAME) &&
+ config_enabled(CONFIG_MTD_SPLIT_FIRMWARE))
+ split_firmware(master, part);
@ -248,7 +195,7 @@
/*
* 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
@@ -643,6 +773,7 @@ int add_mtd_partitions(struct mtd_info *
@@ -643,6 +725,7 @@ int add_mtd_partitions(struct mtd_info *
mutex_unlock(&mtd_partitions_mutex);
add_mtd_device(&slave->mtd);

4
target/linux/generic/patches-3.14/401-mtd-add-support-for-different-partition-parser-types.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
@@ -803,6 +803,30 @@ static struct mtd_part_parser *get_parti
@@ -755,6 +755,30 @@ static struct mtd_part_parser *get_parti
#define put_partition_parser(p) do { module_put((p)->owner); } while (0)
@ -42,7 +42,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
void register_mtd_parser(struct mtd_part_parser *p)
{
spin_lock(&part_parser_lock);
@@ -876,6 +900,38 @@ int parse_mtd_partitions(struct mtd_info
@@ -828,6 +852,38 @@ int parse_mtd_partitions(struct mtd_info
return ret;
}

23
target/linux/generic/patches-3.14/402-mtd-use-typed-mtd-parsers-for-rootfs-and-firmware-split.patch
View file

@ -38,7 +38,7 @@
static inline unsigned long
mtd_pad_erasesize(struct mtd_info *mtd, int offset, int len)
{
@@ -714,6 +745,12 @@ static void split_uimage(struct mtd_info
@@ -673,6 +704,12 @@ static void split_uimage(struct mtd_info
static void split_firmware(struct mtd_info *master, struct mtd_part *part)
{
@ -51,20 +51,19 @@
if (config_enabled(CONFIG_MTD_UIMAGE_SPLIT))
split_uimage(master, part);
}
@@ -731,9 +768,12 @@ static void mtd_partition_split(struct m
@@ -689,6 +726,12 @@ static void mtd_partition_split(struct m
if (rootfs_found)
return;
if (!strcmp(part->mtd.name, "rootfs")) {
+ int ret;
+ if (!strcmp(part->mtd.name, "rootfs")) {
+ run_parsers_by_type(part, MTD_PARSER_TYPE_ROOTFS);
+
rootfs_found = 1;
- if (config_enabled(CONFIG_MTD_ROOTFS_SPLIT))
+ ret = run_parsers_by_type(part, MTD_PARSER_TYPE_ROOTFS);
+ if (ret <= 0 && config_enabled(CONFIG_MTD_ROOTFS_SPLIT))
split_rootfs_data(master, part);
}
+ rootfs_found = 1;
+ }
+
if (!strcmp(part->mtd.name, SPLIT_FIRMWARE_NAME) &&
config_enabled(CONFIG_MTD_SPLIT_FIRMWARE))
split_firmware(master, part);
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -70,6 +70,8 @@ struct mtd_part_parser_data {

2
target/linux/generic/patches-3.14/403-mtd-hook-mtdsplit-to-Kbuild.patch
View file

@ -1,6 +1,6 @@
--- a/drivers/mtd/Kconfig
+++ b/drivers/mtd/Kconfig
@@ -37,6 +37,11 @@ config MTD_UIMAGE_SPLIT
@@ -32,6 +32,11 @@ config MTD_UIMAGE_SPLIT
depends on MTD_SPLIT_FIRMWARE
default y

2
target/linux/generic/patches-3.14/405-mtd-add-more-helper-functions.patch
View file

@ -18,7 +18,7 @@
}
if (slave->offset == MTDPART_OFS_RETAIN) {
slave->offset = cur_offset;
@@ -989,6 +987,24 @@ int mtd_is_partition(const struct mtd_in
@@ -944,6 +942,24 @@ int mtd_is_partition(const struct mtd_in
}
EXPORT_SYMBOL_GPL(mtd_is_partition);

2
target/linux/generic/patches-3.14/406-mtd-hook-mtdsplit-into-Kbuild.patch
View file

@ -1,6 +1,6 @@
--- a/drivers/mtd/Kconfig
+++ b/drivers/mtd/Kconfig
@@ -37,6 +37,8 @@ config MTD_UIMAGE_SPLIT
@@ -32,6 +32,8 @@ config MTD_UIMAGE_SPLIT
depends on MTD_SPLIT_FIRMWARE
default y

76
target/linux/generic/patches-3.14/408-mtd-old-rootfs-squashfs-splitter.patch Normal file
View file

@ -0,0 +1,76 @@
--- a/drivers/mtd/Kconfig
+++ b/drivers/mtd/Kconfig
@@ -18,6 +18,11 @@ config MTD_ROOTFS_ROOT_DEV
bool "Automatically set 'rootfs' partition to be root filesystem"
default y
+config MTD_ROOTFS_SPLIT
+ bool "Automatically split 'rootfs' partition for squashfs"
+ select MTD_SPLIT
+ default y
+
config MTD_SPLIT_FIRMWARE
bool "Automatically split firmware partition for kernel+rootfs"
default y
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -668,6 +668,47 @@ mtd_pad_erasesize(struct mtd_info *mtd,
return len;
}
+static int split_squashfs(struct mtd_info *master, int offset, int *split_offset)
+{
+ size_t squashfs_len;
+ int len, ret;
+
+ ret = mtd_get_squashfs_len(master, offset, &squashfs_len);
+ if (ret)
+ return ret;
+
+ len = mtd_pad_erasesize(master, offset, squashfs_len);
+ *split_offset = offset + len;
+
+ return 0;
+}
+
+static void split_rootfs_data(struct mtd_info *master, struct mtd_part *part)
+{
+ unsigned int split_offset = 0;
+ unsigned int split_size;
+ int ret;
+
+ ret = split_squashfs(master, part->offset, &split_offset);
+ if (ret)
+ return;
+
+ if (split_offset <= 0)
+ return;
+
+ if (config_enabled(CONFIG_MTD_SPLIT_SQUASHFS_ROOT))
+ pr_err("Dedicated partitioner didn't create \"rootfs_data\" partition, please fill a bug report!\n");
+ else
+ pr_warn("Support for built-in \"rootfs_data\" splitter will be removed, please use CONFIG_MTD_SPLIT_SQUASHFS_ROOT\n");
+
+ split_size = part->mtd.size - (split_offset - part->offset);
+ printk(KERN_INFO "mtd: partition \"%s\" created automatically, ofs=0x%x, len=0x%x\n",
+ ROOTFS_SPLIT_NAME, split_offset, split_size);
+
+ __mtd_add_partition(master, ROOTFS_SPLIT_NAME, split_offset,
+ split_size, false);
+}
+
#define UBOOT_MAGIC 0x27051956
static void split_uimage(struct mtd_info *master, struct mtd_part *part)
@@ -725,7 +766,10 @@ static void mtd_partition_split(struct m
return;
if (!strcmp(part->mtd.name, "rootfs")) {
- run_parsers_by_type(part, MTD_PARSER_TYPE_ROOTFS);
+ int num = run_parsers_by_type(part, MTD_PARSER_TYPE_ROOTFS);
+
+ if (num <= 0 && config_enabled(CONFIG_MTD_ROOTFS_SPLIT))
+ split_rootfs_data(master, part);
rootfs_found = 1;
}