core: add core_count to thread_init_thread_core_local()

Add a core_count parameter to thread_init_thread_core_local() to enable
dynamic configuration of the number of supported cores when configured

core: add core_count to thread_init_thread_core_local()

Add a core_count parameter to thread_init_thread_core_local() to enable
dynamic configuration of the number of supported cores when configured
with CFG_DYN_STACK_CONFIG=y, or it must be equal to
CFG_TEE_CORE_NB_CORE. This is needed in later patches where the number
of cores is configured dynamically.

The array thread_core_local[] is changed into a pointer to allow dynamic
allocation in later patches. The assembly code is updated accordingly to
handle a pointer instead of an array.

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Acked-by: Alvin Chang <alvinga@andestech.com>
Tested-by: Alvin Chang <alvinga@andestech.com>
Acked-by: Etienne Carriere <etienne.carriere@foss.st.com>

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arm32: add suspend/resume support for cortex-A5

Cortex-A5 has the same set of registers to be saved than cortex-A7. Use the
same code to save them and restore them.

Reviewed-by: Etienne Carriere <e

arm32: add suspend/resume support for cortex-A5

Cortex-A5 has the same set of registers to be saved than cortex-A7. Use the
same code to save them and restore them.

Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Jerome Forissier <jerome@forissier.org>
Signed-off-by: Clément Léger <clement.leger@bootlin.com>

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arm32: fold UNWIND(.fnstart/.fnend) into the FUNC macros

This change applies to arm32 assembler sources.

Instead of using UNWIND(.fnstart) after FUNC or LOCAL_FUNC and
UNWIND(.fnend) before END_FUN

arm32: fold UNWIND(.fnstart/.fnend) into the FUNC macros

This change applies to arm32 assembler sources.

Instead of using UNWIND(.fnstart) after FUNC or LOCAL_FUNC and
UNWIND(.fnend) before END_FUNC, let's fold these statements into the
FUNC macros.

The .fnstart/.fnend directives mark the start and end of a function
with an unwind table entry (.ARM.exidx) and therefore a function
without them has no entry and cannot be unwound. This means that a
stack dump (on abort or panic) would stop when reaching such a
function.

As a result of this patch, a small number of functions now have an
entry in the unwind table when they had none before (the functions
which were using FUNC or LOCAL_FUNC but had no .fnstart/.fnend). It was
almost always a bug and this pacth only increases the size of the
.ARM.exidx section by a few bytes (tested on QEMU).

Signed-off-by: Jerome Forissier <jerome@forissier.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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arm32: move the UNWIND() macro to <asm.S>

All the users of the UNWIND() macro include <asm.S> already, which is
therefore a good place to define this macro. Let's move it from
<kernel/unwind.h> to <

arm32: move the UNWIND() macro to <asm.S>

All the users of the UNWIND() macro include <asm.S> already, which is
therefore a good place to define this macro. Let's move it from
<kernel/unwind.h> to <asm.S>, remove a couple of duplicates in
assembler files, and drop the useless includes.

Signed-off-by: Jerome Forissier <jerome@forissier.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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sm: pm_a32: typo fix

typo fix: do->pm

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

build: include <generated/asm-defines.h> instead of <asm-defines.h>

Make it clear that asm-defines.h is not to be found in the sources
since it is generated.

Signed-off-by: Jerome Forissier <jerome

build: include <generated/asm-defines.h> instead of <asm-defines.h>

Make it clear that asm-defines.h is not to be found in the sources
since it is generated.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Tested-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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core: arm: sm: cleanup license

Cleanup license header to only have
"SPDX-License-Identifier: BSD-2-Clause"

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Etienne Carriere <etienne.carriere@li

core: arm: sm: cleanup license

Cleanup license header to only have
"SPDX-License-Identifier: BSD-2-Clause"

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>

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core: assert foreign interrupts are masked in get_core_pos()

This change modifies get_core_pos() so that calling the routine
from C source asserts the foreign interrupts are masked when
the function

core: assert foreign interrupts are masked in get_core_pos()

This change modifies get_core_pos() so that calling the routine
from C source asserts the foreign interrupts are masked when
the function is called, preventing a cpu migration while reading
current core position.

There is no assertion of foreign interrupt masking for such calls to
get_core_pos() from assembly sources.

Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Jerome Forissier <jerome.forissier@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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Keep assembly functions in separate sections

To get a more fine grained selection of which area (init, paged,
unpaged) an assembly function is assigned do the equivalent of
-ffunction-sections but i

Keep assembly functions in separate sections

To get a more fine grained selection of which area (init, paged,
unpaged) an assembly function is assigned do the equivalent of
-ffunction-sections but in assembly.

Some functions has to be in specific places in the binary for a
successful boot, link script is updated accordingly.

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

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core: arm: psci: add suspend resume common functions

Add cpu suspend/resume common functions.

Platform psci suspend functions need to call
sm_pm_cpu_suspend(arg, platform_suspend) to runs into susp

core: arm: psci: add suspend resume common functions

Add cpu suspend/resume common functions.

Platform psci suspend functions need to call
sm_pm_cpu_suspend(arg, platform_suspend) to runs into suspend.

The i.MX flow is:
psci_cpu_suspend->imx7_cpu_suspend->sm_pm_cpu_suspend(arg, func)
The "func" runs in on-chip ram that not losing power when
system runs into suspend or low power state. Argument "arg" is
passed to function "func" as argument through register "r0".

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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