Alexandre Courbot <acourbot@xxxxxxxxxx> writes:
> Trusted Foundations is a TrustZone-based secure monitor for ARM that
> can be invoked using the same SMC-based API on all supported
> platforms. This patch adds initial basic support for Trusted
> Foundations using the ARM firmware API. Current features are limited
> to the ability to boot secondary processors.
>
> Note: The API followed by Trusted Foundations does *not* follow the SMC
> calling conventions. It has nothing to do with PSCI neither and is only
> relevant to devices that use Trusted Foundations (like most Tegra-based
> retail devices).
>
> Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxx>
> Reviewed-by: Tomasz Figa <t.figa@xxxxxxxxxxx>
> Reviewed-by: Stephen Warren <swarren@xxxxxxxxxx>
[...]
> +void register_trusted_foundations(struct trusted_foundations_platform_data *pd)
> +{
> + /* we are not using version information for now since currently
> + * supported SMCs are compatible with all TF releases */
nit: multi-line comment style...
[...]
> +static inline void register_trusted_foundations(
> + struct trusted_foundations_platform_data *pd)
> +{
> + /* If we try to register TF, this means the system needs it to continue.
> + * Its absence if thus a fatal error. */
...and here...
> + panic("No support for Trusted Foundations, stopping...\n");
> +}
> +
> +static inline void of_register_trusted_foundations(void)
> +{
> + /* If we find the target should enable TF but does not support it,
> + * fail as the system won't be able to do much anyway */
...and here.
> + if (of_find_compatible_node(NULL, NULL, "tl,trusted-foundations"))
> + register_trusted_foundations(NULL);
> +}
> +#endif /* CONFIG_TRUSTED_FOUNDATIONS */
> +
> +#endif
Kevin
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