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SubjectRe: [PATCH 1/2] fpga: mgr: Adds secure BitStream loading support
On Mon, Jan 18, 2021 at 08:20:57AM +0530, Nava kishore Manne wrote:
> This commit adds secure flags to the framework to support
> secure BitStream Loading.
>
> Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
> ---
> drivers/fpga/of-fpga-region.c | 10 ++++++++++
> include/linux/fpga/fpga-mgr.h | 12 ++++++++++++
> 2 files changed, 22 insertions(+)
>
> diff --git a/drivers/fpga/of-fpga-region.c b/drivers/fpga/of-fpga-region.c
> index e405309baadc..3a5eb4808888 100644
> --- a/drivers/fpga/of-fpga-region.c
> +++ b/drivers/fpga/of-fpga-region.c
> @@ -228,6 +228,16 @@ static struct fpga_image_info *of_fpga_region_parse_ov(
> if (of_property_read_bool(overlay, "encrypted-fpga-config"))
> info->flags |= FPGA_MGR_ENCRYPTED_BITSTREAM;
>
> + if (of_property_read_bool(overlay, "userkey-encrypted-fpga-config"))
> + info->flags |= FPGA_MGR_USERKEY_ENCRYPTED_BITSTREAM;

Can this just be encrypted-fpga-config/FPGA_MGR_ENCRYPTED?
> +
> + if (of_property_read_bool(overlay, "ddrmem-authenticated-fpga-config"))
> + info->flags |= FPGA_MGR_DDR_MEM_AUTH_BITSTREAM;
> +
> + if (of_property_read_bool(overlay,
> + "securemem-authenticated-fpga-config"))
> + info->flags |= FPGA_MGR_SECURE_MEM_AUTH_BITSTREAM;
> +
> if (!of_property_read_string(overlay, "firmware-name",
> &firmware_name)) {
> info->firmware_name = devm_kstrdup(dev, firmware_name,
> diff --git a/include/linux/fpga/fpga-mgr.h b/include/linux/fpga/fpga-mgr.h
> index 2bc3030a69e5..2f7455a60666 100644
> --- a/include/linux/fpga/fpga-mgr.h
> +++ b/include/linux/fpga/fpga-mgr.h
> @@ -67,12 +67,24 @@ enum fpga_mgr_states {
> * %FPGA_MGR_BITSTREAM_LSB_FIRST: SPI bitstream bit order is LSB first
> *
> * %FPGA_MGR_COMPRESSED_BITSTREAM: FPGA bitstream is compressed
> + *
> + * %FPGA_MGR_USERKEY_ENCRYPTED_BITSTREAM: indicates bitstream is encrypted with
> + * user key
> + *
> + * %FPGA_MGR_DDR_MEM_AUTH_BITSTREAM: do bitstream authentication using DDR
> + * memory if supported
> + *
> + * %FPGA_MGR_SECURE_MEM_AUTH_BITSTREAM: do bitstream authentication using secure
> + * memory if supported
> */
> #define FPGA_MGR_PARTIAL_RECONFIG BIT(0)
> #define FPGA_MGR_EXTERNAL_CONFIG BIT(1)
> #define FPGA_MGR_ENCRYPTED_BITSTREAM BIT(2)
> #define FPGA_MGR_BITSTREAM_LSB_FIRST BIT(3)
> #define FPGA_MGR_COMPRESSED_BITSTREAM BIT(4)
> +#define FPGA_MGR_USERKEY_ENCRYPTED_BITSTREAM BIT(5)
> +#define FPGA_MGR_DDR_MEM_AUTH_BITSTREAM BIT(6)
> +#define FPGA_MGR_SECURE_MEM_AUTH_BITSTREAM BIT(7)
>
> /**
> * struct fpga_image_info - information specific to a FPGA image
> --
> 2.18.0
>

Thanks,
Moritz

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