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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
Download Patch File Download Diff File Expand all files Collapse all files

1
include/fpga.h
View File

@@ -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

1
include/xilinx.h
View File

@@ -40,6 +40,7 @@ typedef enum { /* typedef xilinx_family */
/* FPGA bitstream supported types */
#define FPGA_LEGACY BIT(0)
#define FPGA_XILINX_ZYNQMP_DDRAUTH BIT(1)
#define FPGA_XILINX_ZYNQMP_ENC BIT(2)
typedef struct { /* typedef xilinx_desc */
xilinx_family family; /* part type */

4
include/zynqmppl.h
View File

@@ -26,7 +26,9 @@
extern struct xilinx_fpga_op zynqmp_op;
#if CONFIG_IS_ENABLED(FPGA_LOAD_SECURE)
#define ZYNQMP_FPGA_FLAGS (FPGA_LEGACY | FPGA_XILINX_ZYNQMP_DDRAUTH)
#define ZYNQMP_FPGA_FLAGS (FPGA_LEGACY | \
FPGA_XILINX_ZYNQMP_DDRAUTH | \
FPGA_XILINX_ZYNQMP_ENC)
#else
#define ZYNQMP_FPGA_FLAGS (FPGA_LEGACY)
#endif