diff options
| author | Etienne Carriere <[email protected]> | 2022-06-01 10:27:31 +0200 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2022-06-23 13:12:56 -0400 |
| commit | f7f124001540878b68b50c6d7ca188a9872a3cb5 (patch) | |
| tree | 2a887f880f62c5fc3ff31a315739326dc9e261a2 /include/linux | |
| parent | c08decd29ec44b38262eaa93e0e66d3965d26232 (diff) | |
smccc: define generic IDs for feature discovery
Defines function IDs ARM_SMCCC_ARCH_FEATURES used to query SMCCC feature
support, applicable from Arm SMCCC v1.1 specification.
Defines macro ARM_SMCCC_RET_NOT_SUPPORTED as generic return identifier
for when a SMCCC feature is not supported.
Signed-off-by: Etienne Carriere <[email protected]>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/arm-smccc.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index 7f2be233947..94a20c97937 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -51,6 +51,10 @@ #define ARM_SMCCC_QUIRK_NONE 0 #define ARM_SMCCC_QUIRK_QCOM_A6 1 /* Save/restore register a6 */ +#define ARM_SMCCC_ARCH_FEATURES 0x80000001 + +#define ARM_SMCCC_RET_NOT_SUPPORTED ((unsigned long)-1) + #ifndef __ASSEMBLY__ #include <linux/linkage.h> |