firmware: smccc: Add the definition for SMCCCv1.2 version/error codes (0441bfe7) · Commits · 戴 / test

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>

include/linux/arm-smccc.h

+7 −2

Original line number	Diff line number	Diff line
		@@ -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.

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