Re: [PATCH v2 3/3] fpga: region: Add fpga-region property 'encrypted-fpga-config'
From: Alan Tull
Date: Tue Feb 21 2017 - 11:36:59 EST
On Tue, Feb 21, 2017 at 7:55 AM, Michal Simek <michal.simek@xxxxxxxxxx> wrote:
> On 20.2.2017 21:55, mdf@xxxxxxxxxx wrote:
>> From: Moritz Fischer <mdf@xxxxxxxxxx>
>>
>> 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@xxxxxxxxxx>
>> Cc: Alan Tull <atull@xxxxxxxxxx>
>> Cc: Michal Simek <michal.simek@xxxxxxxxxx>
>> Cc: SÃren Brinkmann <soren.brinkmann@xxxxxxxxxx>
>> Cc: linux-kernel@xxxxxxxxxxxxxxx
>> Cc: linux-fpga@xxxxxxxxxxxxxxx
>> ---
>> 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@xxxxxxxxxx>
Acked-by: Alan Tull <atull@xxxxxxxxxx>
>
> Thanks,
> Michal
>