ubiformat: Cleanly umount and detach the ubi before formating ...

This was an open fixme for some time. ubiformat does not care about used
ubi volumes or attached ubis.

This patch adds functionality that umounts all filesystems that are
mounted from this nand device. After that the ubi is detached. Then the
normal ubiformat code reformats the ubi. If a ubi was detached
previously, the code tries to reattach the ubi. Filesystems are not
remounted.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: ubidetach: Allow mtd devices as argument ...

Instead of only allow ubi numbers make it possible to
detach a mtd device.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: ubi: Add function to get ubi number from mtd device ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: ubi: umount mounted volumes before detaching a ubi device ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: ubi: make ubi_detach_mtd_dev ubi internal ...

We want to extend the functionality of the ubi detach function,
but we don't want to change the original detach function to make
UBI updates easier. This adds a barebox specific detach function
which encapsulates the original UBI function. Also this makes the
original ubi detach function internal to ubi.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: ubi: rename cdev.c to barebox.c ...

cdev.c exists in the kernel UBI code, but barebox has completely
different content in this file. rename it to barebox.c to reduce the
number of merge conflicts. Also with the name barebox.c we now have
a place to put other barebox specific UBI code to.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fs: umount based on device path and mount path ...

umount on Linux can be used on a mount pathes and device pathes. This
patch adds this functionality to barebox.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>

fs: Add for_each_fs_device_safe() ...

We need to be able to umount specific filesystems while iterating all of
them. This helper gives us a safe macro to do so.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>

ubifs: update implementation from u-boot v2016.03 ...

This updated code supports recovering from unclean unmounts when write
buffer size is larger than 8. Linux uses takes information into
consideration when checking for writes.
The following list shows the changes for each file done compared to
u-boot v2016.03 code.

Makefile
* Add gc.o, do not include header as in u-boot

budget.c:
* Replace __UBOOT__ with __BAREBOX__

debug.c:
* Replace __UBOOT__ with __BAREBOX__
* Remove #include <linux/compat.h>
* Replace current->pid with 0

debug.h
* Replace __UBOOT__ with __BAREBOX__
* Add "0 &&" to ubifs_assert condition check
  U-Boot essentially disabled pr_crit output and dump_stack() is defined
  to do { } while (0), so ubifs_assert does nothing despite condition.

gc.c:
* Replace __UBOOT__ with __BAREBOX__

io.c:
* Replace __UBOOT__ with __BAREBOX__
* Remove #include <linux/compat.h>

key.h:
* No changes

log.c:
* No changes

lprops.c:
* Replace __UBOOT__ with __BAREBOX__

lpt.c
* Replace __UBOOT__ with __BAREBOX__
* Remove #include <linux/compat.h>
* Remove #include <ubi_uboot.h>

lpt_commit.c
* Replace __UBOOT__ with __BAREBOX__
* Remove #include <linux/compat.h>

master.c
* Replace __UBOOT__ with __BAREBOX__
* Remove #include <linux/compat.h>
* Remove #include <ubi_uboot.h>

misc.h
* Replace __UBOOT__ with __BAREBOX__
* Add #ifndef __BAREBOX__ around unneeded ubifs_current_time

orphan.c
* No changes

recovery.c
* Replace __UBOOT__ with __BAREBOX__

replay.c
* Replace __UBOOT__ with __BAREBOX__
* Remove #include <linux/compat.h>

sb.c
* Replace __UBOOT__ with __BAREBOX__
* Remove #include <linux/compat.h>
* Remove #include <ubi_uboot.h>
* rp_uid and rp_gid are still uid_t, not kuid_t, so remove .val

scan.c
* Replace __UBOOT__ with __BAREBOX__

super.c:
* Replaced current->pid with 0
* Replaced __UBOOT__ with __BAREBOX__
* Removed #include <ubi_uboot.h>
* Removed #include <memalign.h>
* Added #include <init.h>
* Replaced malloc_cache_aligned with kzalloc
* Replaced I_LOCK with I_SYNC
* i_uid and i_gid are still uid_t, not kuid_t, so remove .val
* Replaced string "U-Boot" with "Barebox"
* Add #ifndef __BAREBOX__ around open_ubi, sb_test, sb_set, ubifs_mount,
  kill_ubifs_super, ubifs_fs_type
* Do not call ubi_open_volume or ubi_close_volume in ubifs_fill_super
  Those will already be handled in ubifs_probe
* Replaced uboot_ubifs_mount with new ubifs_get_super implementation using
  existing functions alloc_super, alloc_ubifs_info

tnc.c
* Replace __UBOOT__ with __BAREBOX__
* Remove #include <linux/compat.h>

tnc_misc.c
* Replace __UBOOT__ with __BAREBOX__

ubifs-media.h
* Replace __UBOOT__ with __BAREBOX__

ubifs.c:
* Replaced __UBOOT__ with __BAREBOX__
* Adjusted header includes
* Removed DECLARE_GLOBAL_DATA_PTR
* Add static struct z_stream_s variable
* Add struct ubifs_priv delcaration
* Replaced zunzip with deflate_decompress call
* Add ifdef for disabling ZLIB and/or LZO support
* Replaced malloc_cache_aligned with kzalloc
* Added #ifndef __BAREBOX__ around filldir, ubifs_printdir,
  ubifs_set_blk_dev, ubifs_ls, ubifs_exists, ubifs_size, do_readpage,
  ubifs_read, ubifs_close, ubifs_load
* Make parameter filename const char* in ubifs_findfile
* Add UBIFS fs_driver_d implementation
* Add zlib_decomp_init, ubifs_init

ubifs.h:
* Replaced __UBOOT__ with __BAREBOX__
* Adjusted header includes
* Added old #define crc32
* Added helper around kmem*
* Added XATTR_LIST_MAX define
* Added #ifndef __BAREBOX__ around current_fs_time struct inode,
  struct super_block, file_system_type, dentry and friends which barebox
  already has
* Added #ifndef __BAREBOX__ around write_inode in super_operations to avoid
  declaration of writeback_control
* Change rp_uid and rp_gid to uid_t and gui_t
* Added struct device_d to struct ubifs_info
* Added forward declaration of ubifs_get_super

linux/fs.h:
* Make struct inode's i_nlink a union containing a non-const int __i_nlink
  while making i_nlink a const int

linux/fs.h:
* Add s_remove_count

linux/fs.h:
* Convert struct super_block.s_instances and
  struct file_system_type.fs_supers to hlist_head

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

barebox-wrapper: Add kcalloc and __vmalloc ...

They call xzalloc and malloc respectively.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

barebox-wrapper: Implement kfree and vfree as static inline functions ...

If kfree/vfree is called where free is a already variable name, code will
not compile.
Also both take a const* in Linux kernel code.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Move GFP_NOFS to barebox-wrapper ...

This will also be used by upcoming UBIFS update.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: Add atomic.h from u-boot v2016.03 ...

atomic-long.h:
* Replace __UBOOT__ with __BAREBOX__

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

module.h: Add THIS_MODULE ...

This is required by upcoming UBIFS update.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

compiler*.h: include/linux/compiler*.h with Linux 4.5 ...

Include <linux/types.h> instead of uapi/linux/types.h.

This is required for READ_ONCE and WRITE_ONCE for upcoming atomic_t.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

printk: Add pr_cont ...

This is needed by upcoming UBIFS update.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Add list_sort from u-boot v2016.03 ...

This is required by UBIFS update.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

printk: Add printk_once ...

This is needed by upcoming list_sort implementation.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

rbtree: Update to u-boot v2016.03 ...

This adds (among others) rbtree_postorder_for_each_entry_safe which is
required by the upcoming UBIFS update.
Changes to u-boot source:
* Adding include <module.h> for EXPORT_SYMBOL*

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: ubi: Set max_write_size to actual value read from flash ...

Currently max_write_size is set to minimal I/O size. Set to buffer size
read from flash. Required by UBIFS recovery which uses max_write_size
for error detection.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: cfi-flash: Set MTD's writebufsize ...

writebufsize is zero initialized, set actual value during init.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

decompressors: Use malloc/free wrappers ...

The decompressors are used both in a regular image and also for image
decompression. Both need different malloc implementations. Using
malloc/free directly in the decompressor code easily leads to include
file conflicts, so use MALLOC/FREE which can be defined correctly for
the two different usecases.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

PPC: atomic: remove non existing header include ...

linux/config.h does not exist. Remove its inclusion.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

PPC: discard unused functions ...

Use --gc-sections to discard unused functions. This makes the image
smaller.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: doc3: Fix wrong format specifier ...

Fixes: 1e009bf mtd: Make erase_info structs 64bit where necessary

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: nandtest: Fix wrong format specifier ...

Fixes: 1e009bf mtd: Make erase_info structs 64bit where necessary

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: i.MX27: Fix gpt compatible for latest device trees ...

In v4.2-rc3 the "fsl,imx1-gpt" compatible was replaced with
"fsl,imx21-gpt" so i.MX27 currently ends up without clocksource. Fix
this.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Release v2016.04.0 ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

defaultenv-2: add automount for nfs ...

Automatically mount the path that is also used for net booting by
default to /mnt/nfs.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

common: add dependency !SANDBOX on imd target tool ...

The build of bareboximd-target tool fails on sandbox architecture:

      CC      scripts/bareboximd-target
    /tmp/ccoGPulo.o: In function `imd_concat_strings':
    scripts/../common/imd.c:216: undefined reference to `barebox_malloc'
    /tmp/ccoGPulo.o: In function `read_file_2':
    scripts/bareboximd.c:68: undefined reference to `barebox_open'
    scripts/bareboximd.c:74: undefined reference to `barebox_lseek'
    scripts/bareboximd.c:84: undefined reference to `barebox_lseek'
    scripts/bareboximd.c:90: undefined reference to `barebox_malloc'
    scripts/bareboximd.c:99: undefined reference to `barebox_read'
    scripts/bareboximd.c:119: undefined reference to `barebox_free'
    scripts/bareboximd.c:121: undefined reference to `barebox_close'
    /tmp/ccoGPulo.o: In function `imd_command':
    scripts/../common/imd.c:292: undefined reference to `barebox_printf'
    scripts/../common/imd.c:319: undefined reference to `barebox_printf'
    scripts/../common/imd.c:322: undefined reference to `barebox_free'
    scripts/../common/imd.c:324: undefined reference to `barebox_printf'
    /tmp/ccoGPulo.o: In function `usage':
    scripts/bareboximd.c:134: undefined reference to `barebox_printf'
    collect2: error: ld returned 1 exit status
    scripts/Makefile:58: recipe for target 'scripts/bareboximd-target' failed

See also

    commit d4aa015
    Author: Alexander Aring <alex.aring@gmail.com>
    Date:   Tue Nov 19 02:08:13 2013 +0100

        common: add dependency !SANDBOX on target tools

        The build of target tools fails on sandbox architecture.
        We don't need any target tools in this case, so add a dependency.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>