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kernel/3.1[02]: move MTD root device setup code to mtdcore

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The current code only allows to automatically set
root device on MTD partitions. Move the code to MTD
core to allow to use it with all MTD devices.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 38643
This commit is contained in:
Gabor Juhos 2013-11-04 18:37:05 +00:00
parent 866dd2a378
commit 5dba0a237e
16 changed files with 94 additions and 58 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
target/linux/generic/patches-3.10/400-mtd-add-rootfs-split-support.patch
View File

@ -35,16 +35,15 @@
depends on m
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -29,6 +29,8 @@
@@ -29,6 +29,7 @@
#include <linux/kmod.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
+#include <linux/root_dev.h>
+#include <linux/magic.h>
#include <linux/err.h>
#include "mtdcore.h"
@@ -45,13 +47,14 @@ struct mtd_part {
@@ -45,13 +46,14 @@ struct mtd_part {
struct list_head list;
};
@ -60,7 +59,7 @@
/*
* MTD methods which simply translate the effective address and pass through
* to the _real_ device.
@@ -533,8 +536,10 @@ out_register:
@@ -533,8 +535,10 @@ out_register:
return slave;
}
@ -73,7 +72,7 @@
{
struct mtd_partition part;
struct mtd_part *p, *new;
@@ -566,21 +571,24 @@ int mtd_add_partition(struct mtd_info *m
@@ -566,21 +570,24 @@ int mtd_add_partition(struct mtd_info *m
end = offset + length;
mutex_lock(&mtd_partitions_mutex);
@ -108,7 +107,7 @@
return ret;
err_inv:
@@ -590,6 +598,12 @@ err_inv:
@@ -590,6 +597,12 @@ err_inv:
}
EXPORT_SYMBOL_GPL(mtd_add_partition);
@ -121,7 +120,7 @@
int mtd_del_partition(struct mtd_info *master, int partno)
{
struct mtd_part *slave, *next;
@@ -613,6 +627,151 @@ int mtd_del_partition(struct mtd_info *m
@@ -613,6 +626,144 @@ int mtd_del_partition(struct mtd_info *m
}
EXPORT_SYMBOL_GPL(mtd_del_partition);
@ -252,13 +251,6 @@
+ if (!strcmp(part->mtd.name, "rootfs")) {
+ rootfs_found = 1;
+
+ if (config_enabled(CONFIG_MTD_ROOTFS_ROOT_DEV) &&
+ ROOT_DEV == 0) {
+ printk(KERN_NOTICE "mtd: partition \"rootfs\" "
+ "set to be root filesystem\n");
+ ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, part->mtd.index);
+ }
+
+ if (config_enabled(CONFIG_MTD_ROOTFS_SPLIT))
+ split_rootfs_data(master, part);
+ }
@ -273,7 +265,7 @@
/*
* 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
@@ -642,6 +801,7 @@ int add_mtd_partitions(struct mtd_info *
@@ -642,6 +793,7 @@ int add_mtd_partitions(struct mtd_info *
mutex_unlock(&mtd_partitions_mutex);
add_mtd_device(&slave->mtd);

4
target/linux/generic/patches-3.10/401-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
@@ -831,6 +831,30 @@ static struct mtd_part_parser *get_parti
@@ -823,6 +823,30 @@ 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>
int register_mtd_parser(struct mtd_part_parser *p)
{
spin_lock(&part_parser_lock);
@@ -907,6 +931,38 @@ int parse_mtd_partitions(struct mtd_info
@@ -899,6 +923,38 @@ int parse_mtd_partitions(struct mtd_info
return ret;
}

6
target/linux/generic/patches-3.10/402-mtd-use-typed-mtd-parsers-for-rootfs-and-firmware-split.patch
View File

@ -1,6 +1,6 @@
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -627,6 +627,37 @@ int mtd_del_partition(struct mtd_info *m
@@ -626,6 +626,37 @@ int mtd_del_partition(struct mtd_info *m
}
EXPORT_SYMBOL_GPL(mtd_del_partition);
@ -38,7 +38,7 @@
static inline unsigned long
mtd_pad_erasesize(struct mtd_info *mtd, int offset, int len)
{
@@ -686,6 +717,10 @@ static void split_rootfs_data(struct mtd
@@ -685,6 +716,10 @@ static void split_rootfs_data(struct mtd
unsigned int split_size;
int ret;
@ -49,7 +49,7 @@
ret = split_squashfs(master, part->offset, &split_offset);
if (ret)
return;
@@ -735,6 +770,12 @@ static void split_uimage(struct mtd_info
@@ -734,6 +769,12 @@ static void split_uimage(struct mtd_info
static void split_firmware(struct mtd_info *master, struct mtd_part *part)
{

4
target/linux/generic/patches-3.10/404-mtd-use-mtd_get_squashfs_len-in-split_squasfh.patch
View File

@ -1,6 +1,6 @@
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -34,6 +34,7 @@
@@ -33,6 +33,7 @@
#include <linux/err.h>
#include "mtdcore.h"
@ -8,7 +8,7 @@
/* Our partition linked list */
static LIST_HEAD(mtd_partitions);
@@ -669,43 +670,16 @@ mtd_pad_erasesize(struct mtd_info *mtd,
@@ -668,43 +669,16 @@ mtd_pad_erasesize(struct mtd_info *mtd,
return len;
}

4
target/linux/generic/patches-3.10/405-mtd-add-more-helper-functions.patch
View File

@ -1,6 +1,6 @@
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -435,14 +435,12 @@ static struct mtd_part *allocate_partiti
@@ -434,14 +434,12 @@ static struct mtd_part *allocate_partiti
if (slave->offset == MTDPART_OFS_APPEND)
slave->offset = cur_offset;
if (slave->offset == MTDPART_OFS_NXTBLK) {
@ -18,7 +18,7 @@
}
if (slave->offset == MTDPART_OFS_RETAIN) {
slave->offset = cur_offset;
@@ -995,6 +993,24 @@ int mtd_is_partition(const struct mtd_in
@@ -987,6 +985,24 @@ int mtd_is_partition(const struct mtd_in
}
EXPORT_SYMBOL_GPL(mtd_is_partition);

8
target/linux/generic/patches-3.10/411-mtd-partial_eraseblock_write.patch
View File

@ -1,6 +1,6 @@
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -36,6 +36,8 @@
@@ -35,6 +35,8 @@
#include "mtdcore.h"
#include "mtdsplit.h"
@ -9,7 +9,7 @@
/* Our partition linked list */
static LIST_HEAD(mtd_partitions);
static DEFINE_MUTEX(mtd_partitions_mutex);
@@ -232,13 +234,60 @@ static int part_erase(struct mtd_info *m
@@ -231,13 +233,60 @@ static int part_erase(struct mtd_info *m
struct mtd_part *part = PART(mtd);
int ret;
@ -70,7 +70,7 @@
return ret;
}
@@ -246,7 +295,25 @@ void mtd_erase_callback(struct erase_inf
@@ -245,7 +294,25 @@ void mtd_erase_callback(struct erase_inf
{
if (instr->mtd->_erase == part_erase) {
struct mtd_part *part = PART(instr->mtd);
@ -96,7 +96,7 @@
if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
instr->fail_addr -= part->offset;
instr->addr -= part->offset;
@@ -504,18 +571,24 @@ static struct mtd_part *allocate_partiti
@@ -503,18 +570,24 @@ static struct mtd_part *allocate_partiti
if ((slave->mtd.flags & MTD_WRITEABLE) &&
mtd_mod_by_eb(slave->offset, &slave->mtd)) {
/* Doesn't start on a boundary of major erase size */

2
target/linux/generic/patches-3.10/412-mtd-partial_eraseblock_unlock.patch
View File

@ -1,6 +1,6 @@
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -332,7 +332,14 @@ static int part_lock(struct mtd_info *mt
@@ -331,7 +331,14 @@ 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 = PART(mtd);

26
target/linux/generic/patches-3.10/480-mtd-set-rootfs-to-be-root-dev.patch Normal file
View File

@ -0,0 +1,26 @@
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -37,6 +37,7 @@
#include <linux/backing-dev.h>
#include <linux/gfp.h>
#include <linux/slab.h>
+#include <linux/root_dev.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
@@ -408,6 +409,15 @@ int add_mtd_device(struct mtd_info *mtd)
of this try_ nonsense, and no bitching about it
either. :) */
__module_get(THIS_MODULE);
+
+ if (!strcmp(mtd->name, "rootfs") &&
+ config_enabled(CONFIG_MTD_ROOTFS_ROOT_DEV) &&
+ ROOT_DEV == 0) {
+ pr_notice("mtd: device %d (%s) set to be root filesystem\n",
+ mtd->index, mtd->name);
+ ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, mtd->index);
+ }
+
return 0;
fail_added:

22
target/linux/generic/patches-3.12/400-mtd-add-rootfs-split-support.patch
View File

@ -35,16 +35,15 @@
depends on m
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -29,6 +29,8 @@
@@ -29,6 +29,7 @@
#include <linux/kmod.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
+#include <linux/root_dev.h>
+#include <linux/magic.h>
#include <linux/err.h>
#include "mtdcore.h"
@@ -45,13 +47,14 @@ struct mtd_part {
@@ -45,13 +46,14 @@ struct mtd_part {
struct list_head list;
};
@ -60,7 +59,7 @@
/*
* MTD methods which simply translate the effective address and pass through
* to the _real_ device.
@@ -534,8 +537,10 @@ out_register:
@@ -534,8 +536,10 @@ out_register:
return slave;
}
@ -73,7 +72,7 @@
{
struct mtd_partition part;
struct mtd_part *p, *new;
@@ -567,21 +572,24 @@ int mtd_add_partition(struct mtd_info *m
@@ -567,21 +571,24 @@ int mtd_add_partition(struct mtd_info *m
end = offset + length;
mutex_lock(&mtd_partitions_mutex);
@ -108,7 +107,7 @@
return ret;
err_inv:
@@ -591,6 +599,12 @@ err_inv:
@@ -591,6 +598,12 @@ err_inv:
}
EXPORT_SYMBOL_GPL(mtd_add_partition);
@ -121,7 +120,7 @@
int mtd_del_partition(struct mtd_info *master, int partno)
{
struct mtd_part *slave, *next;
@@ -614,6 +628,151 @@ int mtd_del_partition(struct mtd_info *m
@@ -614,6 +627,144 @@ int mtd_del_partition(struct mtd_info *m
}
EXPORT_SYMBOL_GPL(mtd_del_partition);
@ -252,13 +251,6 @@
+ if (!strcmp(part->mtd.name, "rootfs")) {
+ rootfs_found = 1;
+
+ if (config_enabled(CONFIG_MTD_ROOTFS_ROOT_DEV) &&
+ ROOT_DEV == 0) {
+ printk(KERN_NOTICE "mtd: partition \"rootfs\" "
+ "set to be root filesystem\n");
+ ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, part->mtd.index);
+ }
+
+ if (config_enabled(CONFIG_MTD_ROOTFS_SPLIT))
+ split_rootfs_data(master, part);
+ }
@ -273,7 +265,7 @@
/*
* 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 +802,7 @@ int add_mtd_partitions(struct mtd_info *
@@ -643,6 +794,7 @@ int add_mtd_partitions(struct mtd_info *
mutex_unlock(&mtd_partitions_mutex);
add_mtd_device(&slave->mtd);

4
target/linux/generic/patches-3.12/401-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
@@ -832,6 +832,30 @@ static struct mtd_part_parser *get_parti
@@ -824,6 +824,30 @@ 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>
int register_mtd_parser(struct mtd_part_parser *p)
{
spin_lock(&part_parser_lock);
@@ -908,6 +932,38 @@ int parse_mtd_partitions(struct mtd_info
@@ -900,6 +924,38 @@ int parse_mtd_partitions(struct mtd_info
return ret;
}

6
target/linux/generic/patches-3.12/402-mtd-use-typed-mtd-parsers-for-rootfs-and-firmware-split.patch
View File

@ -1,6 +1,6 @@
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -628,6 +628,37 @@ int mtd_del_partition(struct mtd_info *m
@@ -627,6 +627,37 @@ int mtd_del_partition(struct mtd_info *m
}
EXPORT_SYMBOL_GPL(mtd_del_partition);
@ -38,7 +38,7 @@
static inline unsigned long
mtd_pad_erasesize(struct mtd_info *mtd, int offset, int len)
{
@@ -687,6 +718,10 @@ static void split_rootfs_data(struct mtd
@@ -686,6 +717,10 @@ static void split_rootfs_data(struct mtd
unsigned int split_size;
int ret;
@ -49,7 +49,7 @@
ret = split_squashfs(master, part->offset, &split_offset);
if (ret)
return;
@@ -736,6 +771,12 @@ static void split_uimage(struct mtd_info
@@ -735,6 +770,12 @@ static void split_uimage(struct mtd_info
static void split_firmware(struct mtd_info *master, struct mtd_part *part)
{

4
target/linux/generic/patches-3.12/404-mtd-use-mtd_get_squashfs_len-in-split_squasfh.patch
View File

@ -1,6 +1,6 @@
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -34,6 +34,7 @@
@@ -33,6 +33,7 @@
#include <linux/err.h>
#include "mtdcore.h"
@ -8,7 +8,7 @@
/* Our partition linked list */
static LIST_HEAD(mtd_partitions);
@@ -670,43 +671,16 @@ mtd_pad_erasesize(struct mtd_info *mtd,
@@ -669,43 +670,16 @@ mtd_pad_erasesize(struct mtd_info *mtd,
return len;
}

4
target/linux/generic/patches-3.12/405-mtd-add-more-helper-functions.patch
View File

@ -1,6 +1,6 @@
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -435,14 +435,12 @@ static struct mtd_part *allocate_partiti
@@ -434,14 +434,12 @@ static struct mtd_part *allocate_partiti
if (slave->offset == MTDPART_OFS_APPEND)
slave->offset = cur_offset;
if (slave->offset == MTDPART_OFS_NXTBLK) {
@ -18,7 +18,7 @@
}
if (slave->offset == MTDPART_OFS_RETAIN) {
slave->offset = cur_offset;
@@ -996,6 +994,24 @@ int mtd_is_partition(const struct mtd_in
@@ -988,6 +986,24 @@ int mtd_is_partition(const struct mtd_in
}
EXPORT_SYMBOL_GPL(mtd_is_partition);

8
target/linux/generic/patches-3.12/411-mtd-partial_eraseblock_write.patch
View File

@ -1,6 +1,6 @@
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -36,6 +36,8 @@
@@ -35,6 +35,8 @@
#include "mtdcore.h"
#include "mtdsplit.h"
@ -9,7 +9,7 @@
/* Our partition linked list */
static LIST_HEAD(mtd_partitions);
static DEFINE_MUTEX(mtd_partitions_mutex);
@@ -232,13 +234,60 @@ static int part_erase(struct mtd_info *m
@@ -231,13 +233,60 @@ static int part_erase(struct mtd_info *m
struct mtd_part *part = PART(mtd);
int ret;
@ -70,7 +70,7 @@
return ret;
}
@@ -246,7 +295,25 @@ void mtd_erase_callback(struct erase_inf
@@ -245,7 +294,25 @@ void mtd_erase_callback(struct erase_inf
{
if (instr->mtd->_erase == part_erase) {
struct mtd_part *part = PART(instr->mtd);
@ -96,7 +96,7 @@
if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
instr->fail_addr -= part->offset;
instr->addr -= part->offset;
@@ -504,18 +571,24 @@ static struct mtd_part *allocate_partiti
@@ -503,18 +570,24 @@ static struct mtd_part *allocate_partiti
if ((slave->mtd.flags & MTD_WRITEABLE) &&
mtd_mod_by_eb(slave->offset, &slave->mtd)) {
/* Doesn't start on a boundary of major erase size */

2
target/linux/generic/patches-3.12/412-mtd-partial_eraseblock_unlock.patch
View File

@ -1,6 +1,6 @@
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -332,7 +332,14 @@ static int part_lock(struct mtd_info *mt
@@ -331,7 +331,14 @@ 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 = PART(mtd);

26
target/linux/generic/patches-3.12/480-mtd-set-rootfs-to-be-root-dev.patch Normal file
View File

@ -0,0 +1,26 @@
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -37,6 +37,7 @@
#include <linux/backing-dev.h>
#include <linux/gfp.h>
#include <linux/slab.h>
+#include <linux/root_dev.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
@@ -419,6 +420,15 @@ int add_mtd_device(struct mtd_info *mtd)
of this try_ nonsense, and no bitching about it
either. :) */
__module_get(THIS_MODULE);
+
+ if (!strcmp(mtd->name, "rootfs") &&
+ config_enabled(CONFIG_MTD_ROOTFS_ROOT_DEV) &&
+ ROOT_DEV == 0) {
+ pr_notice("mtd: device %d (%s) set to be root filesystem\n",
+ mtd->index, mtd->name);
+ ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, mtd->index);
+ }
+
return 0;
fail_added: