firmware/psci: Expose PSCI conduit

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Commit 09a8d6d484 upstream.

In order to call into the firmware to apply workarounds, it is
useful to find out whether we're using HVC or SMC. Let's expose
this through the psci_ops.

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>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Marc Zyngier 2018-02-06 17:56:16 +00:00 • committed by Greg Kroah-Hartman

parent 6db26ad1dc

commit 906a9f396c

2 changed files with 30 additions and 5 deletions

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28

drivers/firmware/psci.c

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7

include/linux/psci.h

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