From: Sudeep Holla <redacted>

Hi,

This patch series adds support for SMCCCv1.2 ARCH_SOC_ID.
This doesn't add other changes added in SMCCC v1.2 yet. They will
follow these soon along with its first user SPCI/PSA-FF.

This is tested using upstream TF-A + the patch[2] fixing the original
implementation there.


v1[0]->v2[1]:
- Incorporated comments from Steven Price in patch 5/5
- Fixed build for CONFIG_PSCI_FW=n on some arm32 platforms
- Added Steven Price's review tags

v2[1]->v3:
- Incorporated additional comments from Steven Price in patch 5/5
 and added his review tags
- Refactored SMCCC code from PSCI and moved it under
 drivers/firmware/smccc/smccc.c
- Also moved soc_id.c under drivers/firmware/smccc

Regards,
Sudeep

Hello Sudeep,

In case it helps. I have successfully tested the 7 patches series
on some platforms, playing a bit with few configurations.
Qemu emulator for arm64/cortex-a57 with TF-A (v2.x) as secure firmware.
Qemu emulator for arm/cortex-a15. OP-TEE (v3.x) as secure firmware.
A stm32mp15 device (arm/cortex-a7), tested both TF-A (v2.x) and
OP-TEE (3.7.0, 3.9.0-rc) as runtime secure firmware.

Helper functions arm_smccc_1_1_get_conduit()/arm_smccc_1_1_invoke() 
works as expected AFAICT. No regression seen with older secure
firmwares.

For the patches 1 to 6, as I poorly tested [v3,7/7] soc ids,
based on tag next-20200505 [1]:
Tested-by: Etienne Carriere <redacted>
Reviewed-by: Etienne Carriere <redacted>

For [v3,7/7] firmware: smccc: Add ARCH_SOC_ID support
Acked-by: Etienne Carriere <redacted>

[1] 7def1ef0f72c ("Add linux-next specific files for 20200505")

Regards,
Etienne

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