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| author | Harsha <harsha.harsha@xilinx.com> | 2022-02-23 16:05:02 +0530 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2022-03-03 10:49:21 +1200 |
| commit | 80f940ef527efdd8e36c69f7b5ee8e07ac8891d9 (patch) | |
| tree | 362b24d34402c094f3664966d8a13e80dc9f09b6 /drivers/firmware | |
| parent | 52af29abffca9f091bb6e8f615d693b5380cbe7a (diff) | |
| download | lwn-80f940ef527efdd8e36c69f7b5ee8e07ac8891d9.tar.gz lwn-80f940ef527efdd8e36c69f7b5ee8e07ac8891d9.zip | |
firmware: xilinx: Add ZynqMP SHA API for SHA3 functionality
This patch adds zynqmp_pm_sha_hash API in the ZynqMP firmware to compute
SHA3 hash of given data.
Signed-off-by: Harsha <harsha.harsha@xilinx.com>
Signed-off-by: Kalyani Akula <kalyani.akula@xilinx.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/xilinx/zynqmp.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index 450c5f6a1cbf..5e5b0bb2e4e0 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -1121,6 +1121,32 @@ int zynqmp_pm_aes_engine(const u64 address, u32 *out) EXPORT_SYMBOL_GPL(zynqmp_pm_aes_engine); /** + * zynqmp_pm_sha_hash - Access the SHA engine to calculate the hash + * @address: Address of the data/ Address of output buffer where + * hash should be stored. + * @size: Size of the data. + * @flags: + * BIT(0) - for initializing csudma driver and SHA3(Here address + * and size inputs can be NULL). + * BIT(1) - to call Sha3_Update API which can be called multiple + * times when data is not contiguous. + * BIT(2) - to get final hash of the whole updated data. + * Hash will be overwritten at provided address with + * 48 bytes. + * + * Return: Returns status, either success or error code. + */ +int zynqmp_pm_sha_hash(const u64 address, const u32 size, const u32 flags) +{ + u32 lower_addr = lower_32_bits(address); + u32 upper_addr = upper_32_bits(address); + + return zynqmp_pm_invoke_fn(PM_SECURE_SHA, upper_addr, lower_addr, + size, flags, NULL); +} +EXPORT_SYMBOL_GPL(zynqmp_pm_sha_hash); + +/** * zynqmp_pm_register_notifier() - PM API for register a subsystem * to be notified about specific * event/error. |