* Remove symlinking of files located outside api_examples/

* Auto generate dependencies for files located outside api_examples/

* Update names of variables to be similar to those in tools/Makefile

* Fix out of tree build error
  Dependencies are calculated for all files in the SRCS variable.
  Previously, the SRCS variable contained files which were symlinked
  into the api_examples/ directory.  These symlinked files did not exist
  when dependencies were calculated when building out of tree.  This
  resulted in errors such as:
    make[1]: *** No rule to make target `/work/wd/tmp-ppc/api_examples/.depend', needed by `_depend'.  Stop.
    make[1]: Leaving directory `/home/wd/git/u-boot/work/api_examples'
    make: *** [depend] Error 2

  Since symlinked source files are no longer used, this bug no longer
  exists.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Acked-by: Rafal Jaworowski <raj@semihalf.com>

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Acked-by: Rafal Jaworowski <raj@semihalf.com>

Combining the two rules cleans up the Makefile a bit

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Acked-by: Rafal Jaworowski <raj@semihalf.com>

This cleans up the Makefile a bit and simplifies future changes

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Acked-by: Rafal Jaworowski <raj@semihalf.com>

Add .gitignore for generated files in api_examples directory

Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
Signed-off-by: Wolfgang Denk <wd@denx.de>

- Extend ub_dev_read() and ub_dev_recv() so they return the length actually
read, which allows for better control and error handling (this introduces
additional error code API_ESYSC returned by the glue mid-layer).

- Clean up definitions naming and usage.

- Other minor cosmetics.

Note these changes do not touch the API proper, so the interface between
U-Boot and standalone applications remains unchanged.

Signed-off-by: Rafal Jaworowski <raj@semihalf.com>

Signed-off-by: Rafal Czubak <rcz@semihalf.com>

Signed-off-by: Rafal Czubak <rcz@semihalf.com>
Acked-by: Rafal Jaworowski <raj@semihalf.com>

De-hardcode range in RAM we search for the API signature. Instead use the stack
pointer as a hint to narrow down the range in which the signature could reside
(it is malloc'ed on the U-Boot heap, and is hoped to remain in some proximity
from stack area). Adjust PowerPC code in API demo to the new scheme.

Signed-off-by: Rafal Czubak <rcz@semihalf.com>
Signed-off-by: Rafal Jaworowski <raj@semihalf.com>

Signed-off-by: Stefan Roese <sr@denx.de>

Signed-off-by: Rafal Czubak <rcz@semihalf.com>
Acked-by: Rafal Jaworowski <raj@semihalf.com>

Signed-off-by: Rafal Czubak <rcz@semihalf.com>
Acked-by: Rafal Jaworowski <raj@semihalf.com>

Signed-off-by: Rafal Czubak <rcz@semihalf.com>

This fixes a demo app link failure on platforms configured with CONFIG_PANIC_HANG.

Signed-off-by: Rafal Jaworowski <raj@semihalf.com>

This fixes a build breakage with CONFIG_API enabled, which appeared after
the recent changes in the U-Boot build system.

Signed-off-by: Rafal Jaworowski <raj@semihalf.com>

Signed-off-by: Wolfgang Denk <wd@denx.de>

This is an API for external (standalone) applications running on top of
U-Boot, and is meant to be more extensible and robust than the existing
jumptable mechanism. It is similar to UNIX syscall approach. See api/README
for more details.

Included is the demo application using this new framework (api_examples).

Please note this is still an experimental feature, and is turned off by
default.

Signed-off-by: Rafal Jaworowski <raj@semihalf.com>