diff options
| author | Ard Biesheuvel <[email protected]> | 2021-01-06 10:34:49 +0000 |
|---|---|---|
| committer | Will Deacon <[email protected]> | 2021-01-20 12:31:43 +0000 |
| commit | 67c6bb56b649590a3f59c2a92331aa4e83d4534c (patch) | |
| tree | bbd35f801f72edd099b5c51a9f724073df81be48 | |
| parent | 19c329f6808995b142b3966301f217c831e7cf31 (diff) | |
firmware: smccc: Add SMCCC TRNG function call IDs
The ARM architected TRNG firmware interface, described in ARM spec
DEN0098, define an ARM SMCCC based interface to a true random number
generator, provided by firmware.
Add the definitions of the SMCCC functions as defined by the spec.
Signed-off-by: Ard Biesheuvel <[email protected]>
Signed-off-by: Andre Przywara <[email protected]>
Reviewed-by: Linus Walleij <[email protected]>
Reviewed-by: Sudeep Holla <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>
| -rw-r--r-- | include/linux/arm-smccc.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index f860645f6512..62c54234576c 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -102,6 +102,37 @@ ARM_SMCCC_OWNER_STANDARD_HYP, \ 0x21) +/* TRNG entropy source calls (defined by ARM DEN0098) */ +#define ARM_SMCCC_TRNG_VERSION \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + ARM_SMCCC_OWNER_STANDARD, \ + 0x50) + +#define ARM_SMCCC_TRNG_FEATURES \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + ARM_SMCCC_OWNER_STANDARD, \ + 0x51) + +#define ARM_SMCCC_TRNG_GET_UUID \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + ARM_SMCCC_OWNER_STANDARD, \ + 0x52) + +#define ARM_SMCCC_TRNG_RND32 \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + ARM_SMCCC_OWNER_STANDARD, \ + 0x53) + +#define ARM_SMCCC_TRNG_RND64 \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_STANDARD, \ + 0x53) + /* * Return codes defined in ARM DEN 0070A * ARM DEN 0070A is now merged/consolidated into ARM DEN 0028 C |