arm32: libutils, libutee, ta: add .note.GNU-stack section to .S files

When building for arm32 with GNU binutils 2.39, the linker outputs
warnings when linking Trusted Applications:

arm-unknown-lin

arm32: libutils, libutee, ta: add .note.GNU-stack section to .S files

When building for arm32 with GNU binutils 2.39, the linker outputs
warnings when linking Trusted Applications:

arm-unknown-linux-uclibcgnueabihf-ld.bfd: warning: utee_syscalls_a32.o: missing .note.GNU-stack section implies executable stack
arm-unknown-linux-uclibcgnueabihf-ld.bfd: NOTE: This behaviour is deprecated and will be removed in a future version of the linker

We could silence the warning by adding the '--no-warn-execstack' option
to the TA link flags, like we did in the parent commit for the TEE core
and ldelf. Indeed, ldelf always allocates a non-executable piece of
memory for the TA to use as a stack.

However it seems preferable to comply with the common ELF practices in
this case. A better fix is therefore to add the missing .note.GNU-stack
sections in the assembler files.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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Remove 'All rights reserved' from Linaro files

The text 'All rights reserved' is useless [1]. The Free Software
Foundation's REUSE Initiative best practices document [2] does not
contain these words

Remove 'All rights reserved' from Linaro files

The text 'All rights reserved' is useless [1]. The Free Software
Foundation's REUSE Initiative best practices document [2] does not
contain these words. Therefore, we can safely remove the text from the
files that are owned by Linaro.

Generated by:
spdxify.py --linaro-only --strip-arr optee_os/

Link: [1] https://en.wikipedia.org/wiki/All_rights_reserved
Link: [2] https://reuse.software/practices/
Link: [3] https://github.com/jforissier/misc/blob/f7b56c8/spdxify.py
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Joakim Bech <joakim.bech@linaro.org>

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Remove license notice from Linaro files

Now that we have added SPDX identifiers, we can safely remove the
verbose license text from the files that are owned by Linaro.

Generated by [1]:
spdxify.p

Remove license notice from Linaro files

Now that we have added SPDX identifiers, we can safely remove the
verbose license text from the files that are owned by Linaro.

Generated by [1]:
spdxify.py --linaro-only --strip-license-text optee_os/

Link: [1] https://github.com/jforissier/misc/blob/f7b56c8/spdxify.py
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Joakim Bech <joakim.bech@linaro.org>

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Add SPDX license identifiers

Adds one SPDX-License-Identifier line [1] to each source files that
contains license text.

Generated by [2]:
spdxify.py --add-spdx optee_os/

The scancode tool [3] wa

Add SPDX license identifiers

Adds one SPDX-License-Identifier line [1] to each source files that
contains license text.

Generated by [2]:
spdxify.py --add-spdx optee_os/

The scancode tool [3] was used to double check the license matching
code in the Python script. All the licenses detected by scancode are
either detected by spdxify.py, or have no SPDX identifier, or are false
matches.

Link: [1] https://spdx.org/licenses/
Link: [2] https://github.com/jforissier/misc/blob/f7b56c8/spdxify.py
Link: [3] https://github.com/nexB/scancode-toolkit
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Joakim Bech <joakim.bech@linaro.org>

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libutils: add atomic_inc32() and atomic_dec32()

Adds atomic increment and decrement for uint32_t implemented without
privileged instructions.

Reviewed-by: Pascal Brand <pascal.brand@linaro.org>
Tes

libutils: add atomic_inc32() and atomic_dec32()

Adds atomic increment and decrement for uint32_t implemented without
privileged instructions.

Reviewed-by: Pascal Brand <pascal.brand@linaro.org>
Tested-by: Jens Wiklander <jens.wiklander@linaro.org> (QEMU, FVP, Juno)
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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