Xilinx changes for v2018.01-rc2-v2

fpga:
- Enable loading bitstream via fit image for !xilinx platforms

zynq:
- Fix SPL SD boot mode

zynqmp:
- Not not reset in panic
- Do not use simple allocator because of fat changes
- Various dt chagnes
- modeboot variable setup
- Fix fpga loading on automotive devices
- Fix coverity issues

test:
- Fix env test for !hush case - Stephen's patch

Check all return values from file functions.
In case of negative return exit immediately.
Also change fsize return value which can't be negative.

Reported-by: Coverity (CID: 23276, 23304, 169357)
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Add this feature to the README.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Lukasz Majewski <lukma@denx.de>

Binman construct images consisting of multiple binary files. These files
sometimes need to know (at run timme) where their peers are located. For
example, SPL may want to know where U-Boot is located in the image, so
that it can jump to U-Boot correctly on boot.

In general the positions where the binaries end up after binman has
finished packing them cannot be known at compile time. One reason for
this is that binman does not know the size of the binaries until
everything is compiled, linked and converted to binaries with objcopy.

To make this work, we add a feature to binman which checks each binary
for symbol names starting with '_binman'. These are then decoded to figure
out which entry and property they refer to. Then binman writes the value
of this symbol into the appropriate binary. With this, the symbol will
have the correct value at run time.

Macros are used to make this easier to use. As an example, this declares
a symbol that will access the 'u-boot-spl' entry to find the 'pos' value
(i.e. the position of SPL in the image):

   binman_sym_declare(unsigned long, u_boot_spl, pos);

This converts to a symbol called '_binman_u_boot_spl_prop_pos' in any
binary that includes it. Binman then updates the value in that binary,
ensuring that it can be accessed at runtime with:

   ulong u_boot_pos = binman_sym(ulong, u_boot_spl, pos);

This assigns the variable u_boot_pos to the position of SPL in the image.

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

The elf module can provide some debugging information to assist with
figuring out what is going wrong. This is also useful in tests. Update the
-D option so that it is passed through to tests as well.

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

This is only 3 bytes long which is not enough to hold two symbol values,
needed to test the binman symbols feature. Increase it to 15 bytes.

Using very small regions is useful since we can easily compare them in
tests and errors are fairly easy to diagnose.

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

For testing we need to build some ELF files containing binman symbols. Add
these to the Makefile and check in the binaries:

   u_boot_binman_syms - normal, valid ELF file
   u_boot_binman_syms_bad - missing the __image_copy_start symbol
   u_boot_binman_syms_size - has a binman symbol with an invalid size

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

This feature is now supported. Drop the incorrect comment.

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

This file contains SPL image without a device tree. Add support for
including this in images.

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

This file contains the SPL device tree. Add support for including this by
itself in images.

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