nv: Do not create globalvars from nvvars ...

When we create a new nvvar there's no need to create the corresponding
globalvar, because whoever wants to use the corresponding globalvar
will create it before usage anyway. Doing this means that we have to
test for existence of a corresponding nvvar when we create a globalvar,
and if it does, set the value of the globalvar from the nvvar.

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

globalvar: remove unused globalvar_add() ...

globalvar_add() is unused in the tree. Remove it.

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

nvvar: Fix creation without value ...

When a new nvvar is added without a value we want to get the value
from the corresponding globalvar. We do this by using nv_set which
ends up freeing the exact string that we passed into nv_set as
value. This results in a corrupt value. Fix this by assigning a
value manually without calling nv_set.

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

bootchooser: export bootchooser_boot ...

Some boards that boot directly from C code do already know that
they want to boot from bootchooser and nothing else. For these
it's easiest to call bootchooser_boot directly, so export this
function.

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

bootchooser: register as bootentry provider ...

Instead of using a global function called by
bootentry_create_from_name(), register the bootchooser as bootentry
provider.

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

blspec: register as bootentry provider ...

Instead of using a global function called by
bootentry_create_from_name(), register blspec as bootentry
provider.

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

boot: Allow to register boot entry providers ...

bootentry_create_from_name() takes a name and creates bootentries
for it. It tries different providers that interpret the name:
blspec, bootchooser or script pathes. Instead of hardcoding the
different providers in the function, allow the providers to register
themselves.

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

sandbox_defconfig: enable squashfs support ...

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

commands: digest: show area info only if necessary ...

Area info "0x00000000 ... 0xffffffffffffffff" in digest
commands output is something strange and misleading, e.g.

  barebox@barebox sandbox:/ md5sum logo/barebox-logo-240.png
  d3226a0eba3fd49af6bd190b077a3466  logo/barebox-logo-240.png 0x00000000 ... 0xffffffffffffffff

Also skipping area info in the barebox digets commands
output for every file makes it more similar to traditional
*nix digest commands output.

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

usb: gadget: set otg to peripheral mode on autostart ...

we won't be able to start if otg is not properly configured.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

state: remove unused variable type ...

enum state_variable_type is never used. Remove it.

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

ARM Kindle3 defconfig: add clock manipulation command ...

The clock manipulation command provides usefull information for a
potential kernel developper. Just add it for kindle3 defconfig.

Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i.MX: hab: Add HAB fusebox related convenience functions / command ...

Secure boot with HAB requires handling of the super root key hash
and actually locking down the device. The related information is
stored in the i.MX fusebox device (IIM on older SoCs, OCOTP on newer
SoCs). This patch adds several convenience functions to store and
read the super root key hash and to lock down a SoC. Also we add
a command to do this from the command line.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

global command: print info about variables ...

The info contains useful information at least for enums, for these the
possible values are printed. This makes the output of the "global"
command more useful and similar to "devinfo global"

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

video: ipu: register framebuffer, even when no modes are found ...

When no monitor is connected it might be normal that no modes are found.
Do not bail out with an error in this case, which gives an ugly error
message, but instead still register the framebuffer. This gives the
user a chance to examine it and see that the framebuffer has no modes.

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

video: ipu: convert "failed to get modes" message to dev_dbg ...

When no monitor is connected the it's normal for some outputs
that no modes can be found. Convert dev_err to dev_dbg to decrease
the visibility of this message.

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

ARM: i.MX: GuF Santaro: Detect and enable touch controller ...

The Santaro has two different possible Touchscreen controllers.
Both are on different I2C addresses.  Let's probe both of them
and enable in the device tree the one that's actually found on
the hardware.

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

state: find device node from device path, not from device node path ...

The device node path may change from the internal device tree to the
one Linux is started with, so using this path to fixup the tree is
not very robust. Instead, use of_find_node_by_devpath() which has
been created for exactly this purpose.

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

state: Remove -EUCLEAN check from userspace tool ...

The state code is used for the userspace tool aswell, kept in sync
manually. This patch only introduces a change for the userspace
tool, not for barebox.

In Linux userspace there is no direct possibility to check for -EUCLEAN.
To indirectly check for -EUCLEAN the state tool reads the number of
corrected bits before and after reading a block. Unfortunately it does
not take the number of acceptable bitflips into account, but instead
returns -EUCLEAN even when only a single bitflip occurred on a whole
page. To be correct the algorithm must be more complicated: We would
have to read the bitflip_threshold from sysfs. This value is per ECC
step (often 512 byte), not per page. We would have to read the page
in ECC step size chunks, testing for bitflips lower than the threshold
for each chunk. Even if we would do that, there's still another issue.
The eccstats ioctl delivers the eccstats for the whole device, so a
concurrent reader would falsify the result.

Let's decide that this is not worth the hassle and assume that no
device has enough uptime that a cleanup in barebox is not sufficient.

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

state: Do not load state during state_new_from_node ...

The caller of state_new_from_node() may have it's own ideas what to
do when loading the state fails, so do not load it in the initialization
function, but instead let the caller do it.

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

state: Update documentation ...

- explain what buckets are
- rework text about storage backends
- explain redundancy concept

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

state: Allow to load without authentification ...

Sometimes it's useful to be able to load a state even when it
can't be authentificated. Add an option for this.

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

state: backend bucket circular: Explain metadata ...

Explain why we have metadata and where it is used.

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

state: backend_circular: Set minumum writesize to 8 ...

NOR flashes have a write size of 1. With this the metadata may
end up on non-4-byte-aligned offsets. Force the minimum writesize
to 8 so that the metadata is always at aligned offsets.

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

state: backend_raw: alloc digest only when needed ...

Instead of deferring probe just allocate the digest when
it's needed. This way the credentials can be added later,
possibly on the commandline.

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

crypto: digest: initialize earlier ...

Digests have dependencies and are needed for state which initializes
at device_initcall level. To make sure the digests are available
for state register them earlier, at coredevice_initcall level.

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

commands: state: allow loading state with -l ...

At least for testing purposes it's useful to be able to
manually load a state. Add -l option for this.

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

commands: implement keystore command ...

The keystore command provides access to the barebox keystore.

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

keystore: implement forgetting secrets ...

To be able to change secrets add a function to forget secrets.

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

state: backend_storage: rename more variables ...

Use "buckets" rather than "copies" in variable names.

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