Hi, These patches are based on an old patch: https://review.trustedfirmware.org/c/trusted-firmware-m/+/1686 and the task: https://developer.trustedfirmware.org/T199

The existing idea is, app needs v8m veneer to go on the building, so make 'secure_fw' as sub-project of 'app'. While Dual-core is involved, this hierarchy does not make sense. 'secure_fw' should be a standalone sub-project of 'tfm' instead of 'app'. This would benefit the coming build configuration changes.

This patch has been put in master branch for quite a while and now call for review again, since in feature branch it has been merged and verified for quite a long time.

Thanks.

/Ken

-----Original Message----- From: TF-M tf-m-bounces@lists.trustedfirmware.org On Behalf Of Andrei Narkevitch via TF-M Sent: Thursday, August 15, 2019 2:59 AM To: tf-m@lists.trustedfirmware.org Subject: [TF-M] Build system changes for dual core platforms

Hi,

Please review the proposed build system changes. Intention of those is to lay groundwork for building TFM for dual core platforms (aka twincpu). The main problem of the existing build system is that it assumes that both tfm_s and tfm_ns run on the same core. In dual core systems secure and non-secure code runs on two independent cores. Each CPU core can be different in terms of architecture, configuration etc, and this adds the requirement of separating out secure and non-secure builds.. The patches basically do the following:

• Introduce TFM_MULTI_CORE_TOPOLOGY, that distinguish single core and

multicore builds.

• Split secure and non-secure builds and build both in single building execution.

https://review.trustedfirmware.org/c/trusted-firmware-m/+/1747 https://review.trustedfirmware.org/c/trusted-firmware-m/+/1748 https://review.trustedfirmware.org/c/trusted-firmware-m/+/1749

Thanks, Andrei

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