renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-21 11:44:01 +08:00
Code

firmware: smccc: Add SMCCC TRNG function call IDs

Browse Source 
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 <ardb@kernel.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Link: https://lore.kernel.org/r/20210106103453.152275-2-andre.przywara@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Ard Biesheuvel 2021-01-06 10:34:49 +00:00 committed by Will Deacon
parent 19c329f680
commit 67c6bb56b6
1 changed files with 31 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
include/linux/arm-smccc.h
View File

@ -102,6 +102,37 @@
ARM_SMCCC_OWNER_STANDARD_HYP, \ ARM_SMCCC_OWNER_STANDARD_HYP, \
0x21) 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 * Return codes defined in ARM DEN 0070A
* ARM DEN 0070A is now merged/consolidated into ARM DEN 0028 C * ARM DEN 0070A is now merged/consolidated into ARM DEN 0028 C