[PATCH v9 09/21] ARM64 / ACPI: Introduce early_param "acpi=" to enable/disable ACPI

Olof Johansson olof at lixom.net
Thu Mar 5 10:11:31 PST 2015

On Wed, Feb 25, 2015 at 04:39:49PM +0800, Hanjun Guo wrote:
> From: Al Stone <al.stone at linaro.org>
> This implements the following policy to decide whether ACPI should
> be used to boot the system:
> - acpi=off: ACPI will not be used to boot the system, even if there is
>   no alternative available (e.g., device tree is empty)
> - acpi=force: only ACPI will be used to boot the system; if that fails,
>   there will be no fallback to alternative methods (such as device tree)
> - otherwise, ACPI will be used as a fallback if the device tree turns out
>   to lack a platform description; the heuristic to decide this is whether
>   /chosen is the only node present at depth 1
> CC: Catalin Marinas <catalin.marinas at arm.com>
> CC: Will Deacon <will.deacon at arm.com>
> CC: Rafael J. Wysocki <rjw at rjwysocki.net>
> Signed-off-by: Al Stone <al.stone at linaro.org>
> Signed-off-by: Graeme Gregory <graeme.gregory at linaro.org>
> Signed-off-by: Hanjun Guo <hanjun.guo at linaro.org>
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel at linaro.org>

Acked-by: Olof Johansson <olof at lixom.net>


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