Skip tests which requires python elftools if the tool is not available.

Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

Binman lets us declare symbols in SPL/TPL that refer to other entries in
the same binman image as them. These symbols are filled in with the
correct values while binman assembles the images, but this is done
in-memory only. Symbols marked as optional can be filled with
BINMAN_SYM_MISSING as an error value if their referred entry is missing.

However, the unmodified SPL/TPL binaries are still available on disk,
and can be used by people. For these files, nothing ensures that the
symbols are set to this error value, and they will be considered valid
when they are not.

Empirically, all symbols show up as zero in a sandbox_vpl build when we
run e.g. tpl/u-boot-tpl directly. On the other hand, zero is a perfectly
fine value for a binman-written symbol, so we cannot say the symbols
have wrong values based on that.

Declare a magic symbol that binman always fills in with a fixed value.
Check this value as an indicator that symbols were filled in correctly.
Return the error value for all symbols when this magic symbol has the
wrong value.

For binman tests, we need to make room for the new symbol in the mocked
SPL/TPL data by extending them by four bytes. This messes up some test
image layouts. Fix the affected values, and check the magic symbol
wherever it makes sense.

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>

Rename this function to make it clear that it only reads loadable
segments. Also update the error for missing module to better match the
message emitted by Python.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Suggested-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>

Add coverage for the new elf functions needed for the event_dump.py
script.

Signed-off-by: Simon Glass <sjg@chromium.org>

Fix pylint errors that can be fixed and mask those that seem to be
incorrect.

A complication with binman is that it tries to avoid importing libfdt
(or anything that imports it) unless needed, so that things like help
still work if it is missing.

Note that two tests are duplicated in binman and two others have
duplicate names, so both of these issues are fixed also.

Signed-off-by: Simon Glass <sjg@chromium.org>

At present the 'args' property of the mkimage entry type is a string. This
makes it difficult to include CONFIG options in that property. In
particular, this does not work:

   args = "-n CONFIG_SYS_SOC -E"

since the preprocessor does not operate within strings, nor does this:

   args = "-n" CONFIG_SYS_SOC" "-E"

since the device tree compiler does not understand string concatenation.

With this new feature, we can do:

   args = "-n", CONFIG_SYS_SOC, "-E";

Signed-off-by: Simon Glass <sjg@chromium.org>

Add a function which reads the segments and the entry address.

Also fix a comment nit in the tests while we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>

Convert this file to snake case and update all files which use it.

Signed-off-by: Simon Glass <sjg@chromium.org>

Convert this file to snake case and update all files which use it.

Signed-off-by: Simon Glass <sjg@chromium.org>

Convert this file to snake case and update all files which use it.

Signed-off-by: Simon Glass <sjg@chromium.org>