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SubjectRe: [PATCH v2 3/3] fpga: region: Add fpga-region property 'encrypted-fpga-config'
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On 20.2.2017 21:55, mdf@kernel.org wrote:
> From: Moritz Fischer <mdf@kernel.org>
>
> Add fpga-region property to allow passing the fact that the bitstream is
> encrypted to the fpga-region and ultimately to the low-level driver.
>
> Signed-off-by: Moritz Fischer <mdf@kernel.org>
> Cc: Alan Tull <atull@kernel.org>
> Cc: Michal Simek <michal.simek@xilinx.com>
> Cc: Sören Brinkmann <soren.brinkmann@xilinx.com>
> Cc: linux-kernel@vger.kernel.org
> Cc: linux-fpga@vger.kernel.org
> ---
> Documentation/devicetree/bindings/fpga/fpga-region.txt | 1 +
> drivers/fpga/fpga-region.c | 8 ++++++--
> 2 files changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/fpga/fpga-region.txt b/Documentation/devicetree/bindings/fpga/fpga-region.txt
> index 3b32ba1..81bf3ad 100644
> --- a/Documentation/devicetree/bindings/fpga/fpga-region.txt
> +++ b/Documentation/devicetree/bindings/fpga/fpga-region.txt
> @@ -186,6 +186,7 @@ Optional properties:
> otherwise full reconfiguration is done.
> - external-fpga-config : boolean, set if the FPGA has already been configured
> prior to OS boot up.
> +- encrypted-fpga-config : boolean, set if the bitstream is encrypted
> - region-unfreeze-timeout-us : The maximum time in microseconds to wait for
> bridges to successfully become enabled after the region has been
> programmed.
> diff --git a/drivers/fpga/fpga-region.c b/drivers/fpga/fpga-region.c
> index 3222fdb..2fe2a52 100644
> --- a/drivers/fpga/fpga-region.c
> +++ b/drivers/fpga/fpga-region.c
> @@ -337,8 +337,9 @@ static int child_regions_with_firmware(struct device_node *overlay)
> * The overlay must add either firmware-name or external-fpga-config property
> * to the FPGA Region.
> *
> - * firmware-name : program the FPGA
> - * external-fpga-config : FPGA is already programmed
> + * firmware-name : program the FPGA
> + * external-fpga-config : FPGA is already programmed
> + * encrypted-fpga-config : FPGA bitstream is encrypted
> *
> * The overlay can add other FPGA regions, but child FPGA regions cannot have a
> * firmware-name property since those regions don't exist yet.
> @@ -373,6 +374,9 @@ static int fpga_region_notify_pre_apply(struct fpga_region *region,
> if (of_property_read_bool(nd->overlay, "external-fpga-config"))
> info->flags |= FPGA_MGR_EXTERNAL_CONFIG;
>
> + if (of_property_read_bool(nd->overlay, "encrypted-fpga-config"))
> + info->flags |= FPGA_MGR_ENCRYPTED_BITSTREAM;
> +
> of_property_read_string(nd->overlay, "firmware-name", &firmware_name);
>
> of_property_read_u32(nd->overlay, "region-unfreeze-timeout-us",
>

Acked-by: Michal Simek <michal.simek@xilinx.com>

Thanks,
Michal

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