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firmware/psci: Expose SMCCC version through psci_ops

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Since PSCI 1.0 allows the SMCCC version to be (indirectly) probed,
let's do that at boot time, and expose the version of the calling
convention as part of the psci_ops structure.

Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Marc Zyngier 2018-02-06 17:56:17 +00:00 • committed by Catalin Marinas
parent 09a8d6d484
commit e78eef554a
2 changed files with 33 additions and 0 deletions
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6
include/linux/psci.h
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@ -31,6 +31,11 @@ enum psci_conduit {
PSCI_CONDUIT_HVC,
};
enum smccc_version {
SMCCC_VERSION_1_0,
SMCCC_VERSION_1_1,
};
struct psci_operations {
u32 (*get_version)(void);
int (*cpu_suspend)(u32 state, unsigned long entry_point);
@ -41,6 +46,7 @@ struct psci_operations {
unsigned long lowest_affinity_level);
int (*migrate_info_type)(void);
enum psci_conduit conduit;
enum smccc_version smccc_version;
};
extern struct psci_operations psci_ops;