[patch v11 08/23] ARM64 / ACPI: Introduce early_param "acpi=" to enable/disable ACPI

On Tue, Mar 24, 2015 at 10:02:41PM +0800, Hanjun Guo wrote:

From: Al Stone <redacted>

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@arm.com>
CC: Will Deacon <redacted>
CC: Rafael J. Wysocki <redacted>
Acked-by: Olof Johansson <redacted>
Acked-by: Grant Likely <redacted>
Tested-by: Timur Tabi <redacted>
Signed-off-by: Al Stone <redacted>
Signed-off-by: Graeme Gregory <redacted>
Signed-off-by: Hanjun Guo <redacted>
Signed-off-by: Ard Biesheuvel <redacted>

Acked-by: Catalin Marinas <catalin.marinas@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