diff options
| author | Adrian Fiergolski <[email protected]> | 2022-07-22 17:16:14 +0300 |
|---|---|---|
| committer | Michal Simek <[email protected]> | 2022-07-26 09:34:21 +0200 |
| commit | b524f8fb1e94a8e649ba06a7cb87e6dcaa96ebc3 (patch) | |
| tree | 11c1dfb7b63801bf0686162c7a079fd8ab0e668b /drivers | |
| parent | a3a1afb747d4d71c3dd5ba01b2796cebd65c65cd (diff) | |
fpga: zynqmp: support loading encrypted bitfiles
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 <[email protected]>
Co-developed-by: Oleksandr Suvorov <[email protected]>
Signed-off-by: Oleksandr Suvorov <[email protected]>
Tested-by: Adrian Fiergolski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Michal Simek <[email protected]>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/fpga/zynqmppl.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/fpga/zynqmppl.c b/drivers/fpga/zynqmppl.c index fc55d7a388f..d1491da02c3 100644 --- a/drivers/fpga/zynqmppl.c +++ b/drivers/fpga/zynqmppl.c @@ -257,6 +257,11 @@ static int zynqmp_load(xilinx_desc *desc, const void *buf, size_t bsize, info.authflag = ZYNQMP_FPGA_AUTH_DDR; info.encflag = FPGA_NO_ENC_OR_NO_AUTH; return desc->operations->loads(desc, buf, bsize, &info); + case FPGA_XILINX_ZYNQMP_ENC: + /* Encryption using device key */ + info.authflag = FPGA_NO_ENC_OR_NO_AUTH; + info.encflag = FPGA_ENC_DEV_KEY; + return desc->operations->loads(desc, buf, bsize, &info); #endif default: printf("Unsupported bitstream type %d\n", flags); @@ -360,6 +365,9 @@ static int __maybe_unused zynqmp_str2flag(xilinx_desc *desc, const char *str) #if CONFIG_IS_ENABLED(FPGA_LOAD_SECURE) if (!strncmp(str, "u-boot,zynqmp-fpga-ddrauth", 26)) return FPGA_XILINX_ZYNQMP_DDRAUTH; + + if (!strncmp(str, "u-boot,zynqmp-fpga-enc", 22)) + return FPGA_XILINX_ZYNQMP_ENC; #endif return 0; } |