Now that am335x_evm boots OK on the Beaglebone black, drop the latter
and update the docs to cover the change.

Also add a few updates about 'make fit' and drop the note about the
security review, as U-Boot's verified boot has had quite extensive
review now.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

Fixes: ad29e08b79fd ("doc: Bring in FIT signature files")
Signed-off-by: Alexander Dahl <ada@thorsis.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

We currently only describe the process to enable measured boot using
bootm. Describe the UEFI requirements as well which predate bootm.

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

Fix a trivial typo in the bootmeth documentation.

Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

Stderr was missing from the initial description and example.

As I understand the env command documentation the subcommand style is
preferred, though the old format is still fully supported.

Signed-off-by: Fiona Klute <fiona.klute@gmx.de>
Reviewed-by: Tony Dinh <mibodhi@gmail.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

This adds details that I would have liked to have readily available,
in particular how to activate the network interface before enabling
netconsole, and how to integrate netconsole so you can use the U-Boot
prompt.

Signed-off-by: Fiona Klute <fiona.klute@gmx.de>
Reviewed-by: Tony Dinh <mibodhi@gmail.com>

Update fit documentation to clarify that FPGA images are vendor specific and opaque bitstreams.

Signed-off-by: Sam Povilus <sam.povilus@amd.com>

Update documentation to remove un-needed curly braces.

Signed-off-by: Sam Povilus <sam.povilus@amd.com>

If 'env print -e' is invoked without variable name, all UEFI variables are
listed.

Describe that 'env print -e' requires CONFIG_HEXDUMP=y to print content of
UEFI variables.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

* add link to askenv man-page
* add printenv

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>