bootm: add initial FIT support ...

This implementation is inspired by U-Boot's FIT support. Instead of
using libfdt (which does not exist in barebox), configuration signatures
are verified by using a simplified DT parser based on barebox's own
code.

Currently, only signed configurations with hashed images are supported,
as the other variants are less useful for verified boot. Compatible FIT
images can be created using U-Boot's mkimage tool.

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

bootm: make verifying/hashing configurable ...

So long struct bootm_data.verify is a bool which enables CRC checking
(hashing). Extend this to a enum and add support for signature checking
in the same option. This also adds the corresponding globalvar and a
-s option to bootm.

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

crypto: add RSA support ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

crypto: add digest_alloc_by_algo() ...

In barebox the function digest_alloc() allocates a digest based on a string.
When a subsystem already uses an integer value to identify a digest it makes no
sense to create a string and pass it to digest_alloc(), where it is parsed
again. This patch adds the possibility to get a digest by an enum.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

bootm: Initialize bootm_data defaults in single place ...

Both the bootm and the boot code initialize the struct bootm_data
with defaults from the bootm global variables. Create a common
function for doing this.

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

bootm: move oftree code together ...

The device tree code is distributed in several places in the bootm code.
Move it all together in bootm_load_devicetree().

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

bootm: move initrd code together ...

The initrd code is distributed in several places in the bootm code.
Move it all together in bootm_load_initrd().

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

bootm: Push dryrun to handlers ...

We can make the dryrun option more useful by calling into the handlers.
With this we can detect more cases that can go wrong during boot.

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

ARM: bootm: Use kernel handler to start barebox image ...

barebox can be called with the kernel calling convention, so
we can reuse the handler instead of creating a barebox specific
handler.

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

bootm: use names instead of numbers for image parts ...

The uImage format uses numbers for to identify the different
parts of a image, but the FIT image format uses names. To better
integrate the FIT image format into bootm always use names and
convert them to numbers when necessary.

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

bootm: introduce bootm_get_os_size ...

ARM do_bootm_linux is not only called with uImages but also with
raw images, so we can't use uimage_get_size() here. Introduce
bootm_get_os_size() which handles the different image types.

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

bootm: Do not call uimage_close twice ...

uimage_close() is called on bootm cleanup, so do not close it
in the failure path in bootm_open_os_uimage().

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

ARM: zImage: add missing free() in appended device tree code ...

oftree must be freed when the tree is successfully unflattened.

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

imx233-olinuxino: Fix mx23_power_init() arguments ...

Commit 4d70da6 ("ARM: MXS: power-init: Add parameters to
mx28_power_init()") causes imx233-olinuxino to not boot anymore.

imx233-olinuxino is commonly powered from external input supply,
so adjust the mx23_power_init() arguments to reflect that.

Reported-by: Peter Mamonov <pmamonov@gmail.com>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Tested-by: Peter Mamonov <pmamonov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

hush: Initialize struct p_context ...

The hush context must be initialized before it is used. Add
initialization where necessary.

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

Merge branch 'for-next/socfpga'

Merge branch 'for-next/rtc'

Merge branch 'for-next/pstore'

Merge branch 'for-next/net'

Merge branch 'for-next/mtd'

Merge branch 'for-next/misc'

Merge branch 'for-next/imx'

Merge branch 'for-next/gcc5'

Merge branch 'for-next/dts'

Merge branch 'for-next/arm'

Release v2016.01.0 ...

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

ARM: Fix exception table setup in MMU-less mode ...

Add code necessary for correct initialization of exception vector
table when MMU is disabled.

Note: Only ARMv7 support is implemented

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: mmu: Add VBAR setup ...

Add code to make sure that normal vector exception table, when it is
used due to unavailability of the high vector table, was not re-mapped
from 0x0 via VBAR by someone else before us.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: asm: Add convenience fucntions to access VBAR ...

Add two functions to get/set VBAR register.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

reset: fix non GPIO reset ...

The reset controller structure is zero initialized in the OF
reset case, but as 0 is also a valid GPIO number the current
code tries to assert/deassert the GPIO instead of calling into
the reset controller device.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>