[patch v11 08/23] ARM64 / ACPI: Introduce early_param "acpi=" to enable/disable ACPI
Catalin Marinas
catalin.marinas at arm.com
Wed Mar 25 09:57:50 PDT 2015
On Tue, Mar 24, 2015 at 10:02:41PM +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>
> Acked-by: Olof Johansson <olof at lixom.net>
> Acked-by: Grant Likely <grant.likely at linaro.org>
> Tested-by: Timur Tabi <timur at codeaurora.org>
> 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: Catalin Marinas <catalin.marinas at arm.com>
But we should also merge Lorenzo's patch which gets read of the forced
param (on top of this series, I really think we should stop rebasing at
this point).
--
Catalin
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