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firmware: smccc: Add the definition for SMCCCv1.2 version/error codes 

Add the definition for SMCCC v1.2 version and new error code added.
While at it, also add a note that ARM DEN 0070A is deprecated and is
now merged into the main SMCCC specification(ARM DEN 0028C).

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Tested-by: Etienne Carriere <etienne.carriere@st.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Etienne Carriere <etienne.carriere@st.com>
Link: https://lore.kernel.org/r/20200518091222.27467-4-sudeep.holla@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Sudeep Holla 2020-05-18 10:12:18 +01:00 committed by Will Deacon
parent 15c704ab62
commit 0441bfe7f0
1 changed files with 7 additions and 2 deletions
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9
include/linux/arm-smccc.h
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@ -12,7 +12,7 @@
* specified in
* https://developer.arm.com/docs/den0028/latest
*
* This code is up-to-date with version DEN 0028 B
* This code is up-to-date with version DEN 0028 C
*/
#define ARM_SMCCC_STD_CALL _AC(0,U)
@ -58,6 +58,7 @@
#define ARM_SMCCC_VERSION_1_0 0x10000
#define ARM_SMCCC_VERSION_1_1 0x10001
#define ARM_SMCCC_VERSION_1_2 0x10002
#define ARM_SMCCC_VERSION_FUNC_ID \
ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
@ -316,10 +317,14 @@ asmlinkage void __arm_smccc_hvc(unsigned long a0, unsigned long a1,
*/
#define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
/* 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
*/
#define SMCCC_RET_SUCCESS 0
#define SMCCC_RET_NOT_SUPPORTED -1
#define SMCCC_RET_NOT_REQUIRED -2
#define SMCCC_RET_INVALID_PARAMETER -3
/*
* Like arm_smccc_1_1* but always returns SMCCC_RET_NOT_SUPPORTED.