Re: [PATCH v3] powerpc/pseries: detect secure and trusted boot state of the system.

Mimi Zohar
2020-07-15T16:54:53Z

On Wed, 2020-07-15 at 07:52 -0400, Nayna Jain wrote:
> The device-tree property to check secure and trusted boot state is
> different for guests(pseries) compared to baremetal(powernv).
>
> This patch updates the existing is_ppc_secureboot_enabled() and
> is_ppc_trustedboot_enabled() functions to add support for pseries.
>
> The secureboot and trustedboot state are exposed via device-tree property:
> /proc/device-tree/ibm,secure-boot and /proc/device-tree/ibm,trusted-boot
>
> The values of ibm,secure-boot under pseries are interpreted as:
>
> 0 - Disabled
> 1 - Enabled in Log-only mode. This patch interprets this value as
> disabled, since audit mode is currently not supported for Linux.
> 2 - Enabled and enforced.
> 3-9 - Enabled and enforcing; requirements are at the discretion of the
> operating system.
>
> The values of ibm,trusted-boot under pseries are interpreted as:
> 0 - Disabled
> 1 - Enabled
>
> Signed-off-by: Nayna Jain <nayna@linux.ibm.com>
> Reviewed-by: Daniel Axtens <dja@axtens.net>

Thanks for updating the patch description.

Reviewed-by: Mimi Zohar <zohar@linux.ibm.com>