Keep binary compatilities TEECore <--> TA

In case the core is compiled with
CFG_TEE_TA_LOG_LEVEL=0
then TA cannot be compiled with CFG_TEE_TA_LOG_LEVEL!=0 because of the trace
function.

This pa

Keep binary compatilities TEECore <--> TA

In case the core is compiled with
CFG_TEE_TA_LOG_LEVEL=0
then TA cannot be compiled with CFG_TEE_TA_LOG_LEVEL!=0 because of the trace
function.

This patch implements stub trace functions in case of unsufficient trace level.
It also check
- TRACE_LEVEL < 0 instead of TRACE_LEVEL == 0
- TRACE_LEVEL >= 0 instead of TRACE_LEVEL != 0
to take into account negative trae levels

Change-Id: I7b4d2d576c50e103d9cf6f5b22f9f99a1ab96d6a
Signed-off-by: Pascal Brand <pascal.brand@st.com>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

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Add MSG() macro for traces

MSG() and MSG_RAW() macros are added.
They are the same as xMSG() and xMSG_RAW() existing macros, but are not
subject to dynamic trace level

Note that when the core trace

Add MSG() macro for traces

MSG() and MSG_RAW() macros are added.
They are the same as xMSG() and xMSG_RAW() existing macros, but are not
subject to dynamic trace level

Note that when the core trace level is 0, these macros are void.

This patch also fixes an issue with "printf" level.

Change-Id: Ibff6058d7e35d728a46878b345b6e0833c18aec1
Reviewed-on: https://gerrit.st.com/18102
Reviewed-by: Emmanuel MICHEL <emmanuel.michel@st.com>
Signed-off-by: Pascal Brand <pascal.brand@st.com>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

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Move bget to libutils replacing dlmalloc

* Moves bget to libutils replacing dlmalloc as kernel memory allocator
* Restores the code formatting of bget.{c,h} to the original state as
parts of the c

Move bget to libutils replacing dlmalloc

* Moves bget to libutils replacing dlmalloc as kernel memory allocator
* Restores the code formatting of bget.{c,h} to the original state as
parts of the current code was unreadable
* Adds malloc_add_pool() to make use of previously unused memory
* Moves call to malloc_init() into platform specific code
* Restores MDBG into working condition
* Adds memalign function to bget.

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Tested-by: Jens Wiklander <jens.wiklander@linaro.org> (QEMU virt platform)
Tested-by: Jerome Forissier <jerome.forissier@linaro.org> (FVP)
Reviewed-by: Etienne Carriere <etienne.carriere@st.com>
Tested-by: Pascal Brand <pascal.brand@linaro.org> (STM platform)

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Merge tee_{core,uta}_trace.h into libutil

Merges tee_core_trace.h and tee_uta_trace.h into a common trace.h
in libutil. Since the trace functions now resides libutil they have
to rely on core and li

Merge tee_{core,uta}_trace.h into libutil

Merges tee_core_trace.h and tee_uta_trace.h into a common trace.h
in libutil. Since the trace functions now resides libutil they have
to rely on core and libutee to provide functions to print to the
log device.

* Keeps compatible interface from tee_kta_trace.h
* Adds TAMSG() and TAMSG_RAW() to log TA related events
* Removes the TRACE_ALWAYS level

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Tested-by: Jens Wiklander <jens.wiklander@linaro.org> (QEMU virt platform)
Reviewed-by: Etienne Carriere <etienne.carriere@st.com>
Reviewed-by: Pascal Brand <pascal.brand@linaro.org>
Tested-by: Pascal Brand <pascal.brand@linaro.org> (STM platform)

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Move util.h from core into libutil

Moves util.h from core into libutil to make it available anywhere.

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Pascal Brand <pascal.bra

Move util.h from core into libutil

Moves util.h from core into libutil to make it available anywhere.

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Pascal Brand <pascal.brand@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@st.com>

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Reentrancy fixes

Before this patch: The normal world was only allowed to enter
secure world with one thread at a time.

After this patch: The normal world may try to enter secure world
with as many

Reentrancy fixes

Before this patch: The normal world was only allowed to enter
secure world with one thread at a time.

After this patch: The normal world may try to enter secure world
with as many threads as it likes, secure world will return busy
when no more threads can be allowed. Secure world still only allows
one active thread at a time, but during RPC another thread may enter
and do some work. This is needed for cancellation to work.

* Adds a mutex that waits in normal world if busy
* Adds a new RPC service to wait in normal world
* Imports bitstring.h from FreeBSD to aid mutex implementation
* Adds a critical section in tee_ta_init_session
* Unmaps TA before RPC exit and maps it again on return to handle
rescheduling of threads during RPC
* Doesn't clear a1-a3 when returning busy
* Bugfixes vector_std_smc_entry

This patch depends on the "Allow parallel entries to secure world"
patch in optee_linuxdriver.

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Remove core dependencies from generic part

This concerns:
- Communication Non-Secure <--> Secure
- sys/types.h contains some types not defined on all compilers

Signed-off-by: Pascal Brand <pascal.b

Remove core dependencies from generic part

This concerns:
- Communication Non-Secure <--> Secure
- sys/types.h contains some types not defined on all compilers

Signed-off-by: Pascal Brand <pascal.brand@st.com>

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Fix warning in sta_helloworld

* Fixes a couple of printf warnings visible on higher log levels.
* Cleans up core/arch/arm32/sta/sub.mk
* Adds a compiler.h to provide the __unused macro to avoid warn

Fix warning in sta_helloworld

* Fixes a couple of printf warnings visible on higher log levels.
* Cleans up core/arch/arm32/sta/sub.mk
* Adds a compiler.h to provide the __unused macro to avoid warnings
about unused parameters.

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Add constant time buf_compare_ct function

This patch adds a constant time memory compare function that mitigates
timing attacks. This patch also fixes three locations where this could
be a problem.

Add constant time buf_compare_ct function

This patch adds a constant time memory compare function that mitigates
timing attacks. This patch also fixes three locations where this could
be a problem.

Signed-off-by: Joakim Bech <joakim.bech@linaro.org>

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Open-source the TEE Core

Signed-off-by: Pascal Brand <pascal.brand@st.com>