core: arm: add guards to sm/psci.h

Adds missing header guards in sm/psci.h.

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

core: arm: add notice to sm/psci.h and sm/std_smc.h

Adds missing notice in sm/psci.h and sm/std_smc.h that was not stated
when these header files were initially merged [1]. License is set
to BSD-2-C

core: arm: add notice to sm/psci.h and sm/std_smc.h

Adds missing notice in sm/psci.h and sm/std_smc.h that was not stated
when these header files were initially merged [1]. License is set
to BSD-2-Clause as per OP-TEE OS license model at the time of [1] and
up to now. Copyright is set to Linaro as per being the maintainer of
OP-TEE.

CC: Peng Fan <peng.fan@nxp.com>
Link: https://github.com/OP-TEE/optee_os/commit/319556cdc38514d0261bec0abf87627d0782f8e [1]
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

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core: arm: sm: upgrade to PSCI 1.1

Add support for new functions, introduced in PSCI v1.1 spec [1] (all
are optional):
* SYSTEM_RESET2 - extends existing SYSTEM_RESET. It provides

core: arm: sm: upgrade to PSCI 1.1

Add support for new functions, introduced in PSCI v1.1 spec [1] (all
are optional):
* SYSTEM_RESET2 - extends existing SYSTEM_RESET. It provides
architectural reset definitions and vendor-specific
resets.
* MEM_PROTECT - provides protection against cold reboot attacks,
by ensuring that memory is overwritten before it is
handed over to an operating system loader.
* MEM_PROTECT_CHECK_RANGE - used to check whether a memory range is
protected by MEM_PROTECT.

[1] https://developer.arm.com/documentation/den0022/latest/

Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Igor Opaniuk <igor.opaniuk@foundries.io>

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core: arm: sm: replace function ids with hex values

Replace PSCI function id defines with full hex values, so it's easier
to validate existing values/add new one from PSCI spec updates.

Reviewed-by

core: arm: sm: replace function ids with hex values

Replace PSCI function id defines with full hex values, so it's easier
to validate existing values/add new one from PSCI spec updates.

Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Igor Opaniuk <igor.opaniuk@foundries.io>

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core/arch/arm/include/*.h: use U() for unsigned constants

Updates with the U() macro as described in the recently updated
coding guidelines.

Acked-by: Ruchika Gupta <ruchika.gupta@linaro.org>
Acked

core/arch/arm/include/*.h: use U() for unsigned constants

Updates with the U() macro as described in the recently updated
coding guidelines.

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

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core: psci.h: add PSCI_CPU_ON_SMC64

Adds PSCI_CPU_ON_SMC64 which is using the 64-bit calling convention as a
complement to define PSCI_CPU_ON using the 32-bit calling convention.

Acked-by: Etienne

core: psci.h: add PSCI_CPU_ON_SMC64

Adds PSCI_CPU_ON_SMC64 which is using the 64-bit calling convention as a
complement to define PSCI_CPU_ON using the 32-bit calling convention.

Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: arm: psci: pass nsec ctx to system_suspend

In the commit 732fc43(core: arm: psci: pass nsec ctx to psci), we have
done the job, but we forgot to follow it in the later commit 1d40eb8
(core: ar

core: arm: psci: pass nsec ctx to system_suspend

In the commit 732fc43(core: arm: psci: pass nsec ctx to psci), we have
done the job, but we forgot to follow it in the later commit 1d40eb8
(core: arm: sm: add PSCI system suspend), fix it in this patch.

Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Zeng Tao <prime.zeng@hisilicon.com>

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core: arm: sm: add psci power state macros

Add PSCI_POWER_STATE_X macros

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

core: arm: sm: add psci power state macros

Add PSCI_POWER_STATE_X macros

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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core: arm: psci: pass nsec ctx to psci

Pass non-secure context to psci functions. When cpu/system suspends,
cpu may loose power, so when back to linux from tee, tee
needs to return to a linux resume

core: arm: psci: pass nsec ctx to psci

Pass non-secure context to psci functions. When cpu/system suspends,
cpu may loose power, so when back to linux from tee, tee
needs to return to a linux resume point, not the usual return address
after "smc" instruction. So we need to modify the mon_lr
value in non-secure context.

Psci runs in monitor mode, sm_get_nsec_ctx can not be used,
so pass the non-secure context pointer to the psci suspend function.

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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core: arm: sm: add PSCI system suspend

Add __weak property for the function, developers
could have their own implementation.

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Acked-by: Jerome Fori

core: arm: sm: add PSCI system suspend

Add __weak property for the function, developers
could have their own implementation.

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>

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core: arm: psci: add helper functions

Add helper function psci_armv7_cpu_off.
This function will be used when use psci to offline a cpu.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Etie

core: arm: psci: add helper functions

Add helper function psci_armv7_cpu_off.
This function will be used when use psci to offline a cpu.

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

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core: arm: add PSCI support

Introduce basic PSCI support.
When CFG_PSCI_ARM32 is defined, PSCI functions will be enabled.
Add __weak property for the PSCI functions, developers could
have their own

core: arm: add PSCI support

Introduce basic PSCI support.
When CFG_PSCI_ARM32 is defined, PSCI functions will be enabled.
Add __weak property for the PSCI functions, developers could
have their own implementation.

PSCI is handled in monitor mode, and when finished, directly returns
to nsec world.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
[s/psci/PSCI/ in commit log. Rebase on top of master.]
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>

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