From: mark.rutland@arm.com (Mark Rutland)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/2] efi/arm64: use UEFI for system poweroff
Date: Fri, 29 Aug 2014 17:01:51 +0100 [thread overview]
Message-ID: <20140829160151.GA18555@leverpostej> (raw)
In-Reply-To: <1409324757-12607-1-git-send-email-ard.biesheuvel@linaro.org>
Hi Ard,
On Fri, Aug 29, 2014 at 04:05:56PM +0100, Ard Biesheuvel wrote:
> If UEFI Runtime Services are available, they are preferred over direct
> PSCI calls or other methods to power down the system.
Could you elaborate on why they should be preferred?
Mark.
> Enable the existing efi_reboot() code by supplying a definition of
> efi_poweroff_required() that returns true.
>
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> ---
> arch/arm64/kernel/efi.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c
> index e72f3100958f..78c85c4252bc 100644
> --- a/arch/arm64/kernel/efi.c
> +++ b/arch/arm64/kernel/efi.c
> @@ -475,3 +475,11 @@ err_unmap:
> return -1;
> }
> early_initcall(arm64_enter_virtual_mode);
> +
> +/*
> + * Override the weak definition in drivers/firmware/efi/reboot.c
> + */
> +bool efi_poweroff_required(void)
> +{
> + return true;
> +}
> --
> 1.8.3.2
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
prev parent reply other threads:[~2014-08-29 16:01 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-29 15:05 [PATCH 1/2] efi/arm64: use UEFI for system poweroff Ard Biesheuvel
2014-08-29 15:05 ` [PATCH 2/2] efi/arm64: use UEFI for system reset Ard Biesheuvel
2014-08-29 15:57 ` Mark Salter
2014-08-29 16:04 ` Catalin Marinas
2014-08-29 16:12 ` Ard Biesheuvel
2014-08-29 16:25 ` Catalin Marinas
2014-08-29 16:43 ` Ard Biesheuvel
2014-08-30 2:17 ` Leif Lindholm
2014-08-29 17:57 ` Mark Rutland
2014-08-29 16:06 ` Mark Rutland
2014-08-29 16:01 ` Mark Rutland [this message]
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