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Functions provided by stdio.h such as printf and sprintf are available
in the codebase, but they add a lot of code to the final image if they
are used:

- AArch64: ~4KB
- AArch32: ~2KB in T32, ~3KB in A32

tf_printf and tf_snprintf are a lot more simple, but it is preferable
to use them when possible because they are also used in common code.

Change-Id: Id09fd2b486198fe3d79276e2c27931595b7ba60e
Acked-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Fix the types of the arguments of trusty_generic_platform_smc()
to match the expected prototype of a runtime service handler
(see rt_svc_handle_t type).

Change-Id: Ie839d116ca924b4b018ea2abbef72a1073da2a32
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>

Change-Id: I9f9a8a159b41be1c865a20801d03a1b2934c3cac

Signed-off-by: Arve Hjønnevåg <arve@android.com>

Add smc calls to return gic base address and print to the debug
console. Allows running a generic trusty binary.

Change-Id: I4b6540f140f11432cdff43c3f5a2097df09dc9d1
Signed-off-by: Arve Hjønnevåg <arve@android.com>