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fpga: zynqmp: support loading encrypted bitfiles

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Add supporting new compatible string "u-boot,zynqmp-fpga-enc" to
handle loading encrypted bitfiles.

This feature requires encrypted FSBL, as according to UG1085:
"The CSU automatically locks out the AES key, stored in either BBRAM
 or eFUSEs, as a key source to the AES engine if the FSBL is not
 encrypted. This prevents using the BBRAM or eFUSE as the key source
 to the AES engine during run-time applications."

Signed-off-by: Adrian Fiergolski <adrian.fiergolski@fastree3d.com>
Co-developed-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io>
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io>
Tested-by: Adrian Fiergolski <adrian.fiergolski@fastree3d.com>
Link: https://lore.kernel.org/r/20220722141614.297383-14-oleksandr.suvorov@foundries.io
Signed-off-by: Michal Simek <michal.simek@amd.com>
This commit is contained in:
Adrian Fiergolski 2022-07-22 17:16:14 +03:00 • committed by Michal Simek
parent a3a1afb747
commit b524f8fb1e
5 changed files with 15 additions and 1 deletions
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1
include/fpga.h
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@ -20,6 +20,7 @@
/* device numbers must be non-negative */
#define FPGA_INVALID_DEVICE -1
#define FPGA_ENC_DEV_KEY 0
#define FPGA_ENC_USR_KEY 1
#define FPGA_NO_ENC_OR_NO_AUTH 2