firmware: arm_sdei: Discover SDEI support via ACPI

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SDEI defines a new ACPI table to indicate the presence of the interface.
The conduit is discovered in the same way as PSCI.

For ACPI we need to create the platform device ourselves as SDEI doesn't
have an entry in the DSDT.

The SDEI platform device should be created after ACPI has been initialised
so that we can parse the table, but before GHES devices are created, which
may register SDE events if they use SDEI as their notification type.

Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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James Morse 2018-01-08 15:38:16 +00:00 • committed by Catalin Marinas

parent fa31ab77ce

commit 677a60bd20

1 changed files with 40 additions and 1 deletions

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drivers/firmware/arm_sdei.c

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