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Updated optee_utils.c to fix ARM-software/tf-issues#603 related to the
tee-validate-header bug.

Minor updates to the header valid checking logic. It would never make
sense to have less than 1 image to load so this is now checked.

Changed OPTEE_MAX_IMAGE_NUM to OPTEE_MAX_NUM_IMAGES to clarify its
definition. OPTEE_MAX_IMAGE_NUM sounds like an ID assigned to the last
image to load. OPTEE_MAX_NUM_IMAGES sounds like the maximum number of
images to load.
Signed-off-by: Nathan Menhorn <nathan.menhorn@xilinx.com>

Rule 5.7: A tag name shall be a unique identifier

Follow convention of shorter names for smaller scope to fix
violations of MISRA rule 5.7

Fixed For:
    make ARM_TSP_RAM_LOCATION=tdram LOG_LEVEL=50 PLAT=fvp SPD=opteed

Change-Id: I5fbb5d6ebddf169550eddb07ed880f5c8076bb76
Signed-off-by: Daniel Boulby <daniel.boulby@arm.com>

Currently optee header info is only printed after it is validated,
but this does not help with debugging in case of error, so print it
before.
Signed-off-by: Victor Chong <victor.chong@linaro.org>

AArch32 only platforms can boot the OP-TEE secure firmware as
a BL32 secure payload. Such configuration can be defined through
AARCH32_SP=optee.

The source files can rely on AARCH32_SP_OPTEE to condition
OP-TEE boot specific instruction sequences.

OP-TEE does not expect ARM Trusted Firmware formatted structure
as boot argument. Load sequence is expected to have already loaded
to OP-TEE boot arguments into the bl32 entrypoint info structure.

Last, AArch32 platform can only boot AArch32 OP-TEE images.

Change-Id: Ic28eec5004315fc9111051add6bb1a1d607fc815
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>

Trusted OS may have extra images to be loaded. Load them one by one
and do the parsing. In this patch, ARM TF need to load up to 3 images
for optee os: header, pager and paged images. Header image is the info
about optee os and images. Pager image include pager code and data.
Paged image include the paging parts using virtual memory.

Change-Id: Ia3bcfa6d8a3ed7850deb5729654daca7b00be394
Signed-off-by: Summer Qin <summer.qin@arm.com>