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Maniphest T563

Enable platform specific extensions to the core set of SVC handlers.
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Description

We have APIs for our SP services that must be executed in Secure Privileged mode.
Currently, the set of SVC handlers is entirely within the tfm core code base.
I propose a simple mechanism for extending the set of SVCs to include platform specific functions.
To enable platform specific SVC handlers, add “–DPLATFORM_SVC_HANDLERS=True” to the CMAKE command line.

When PLATFORM_SVC_HANDLERS is defined, the user must then provide an implementation of:

int32_t platform_svc_handlers(tfm_svc_number_t svc_num, uint32_t *ctx, uint32_t lr);

The platform specific SVC handler enumerations will begin with the new enumeration value "TFM_SVC_PLATFORM_BASE".

Event Timeline

ademars triaged this task as Normal priority.Oct 22 2019, 3:21 PM
ademars created this task.
ademars updated the task description. (Show Details)Nov 11 2019, 9:30 PM
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