linux-kernel - Re: [PATCH v9 1/5] ARM: add basic support for Trusted Foundations

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Message-Id: <D49A3E92-54FD-4275-82F5-DBB476086B03@codeaurora.org>
Date:	Mon, 28 Oct 2013 05:57:04 -0500
From:	Kumar Gala <galak@...eaurora.org>
To:	Alexandre Courbot <acourbot@...dia.com>
Cc:	Stephen Warren <swarren@...dotorg.org>,
	Russell King <linux@....linux.org.uk>,
	Tomasz Figa <t.figa@...sung.com>,
	Olof Johansson <olof@...om.net>,
	Dave Martin <Dave.Martin@....com>,
	Arnd Bergmann <arnd@...db.de>,
	Kevin Hilman <khilman@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <Mark.Rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-tegra@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v9 1/5] ARM: add basic support for Trusted Foundations


On Oct 28, 2013, at 5:28 AM, Alexandre Courbot wrote:

> Trusted Foundations is a TrustZone-based secure monitor for ARM that
> can be invoked using the same SMC-based API on all supported
> platforms. This patch adds initial basic support for Trusted
> Foundations using the ARM firmware API. Current features are limited
> to the ability to boot secondary processors.
> 
> Note: The API followed by Trusted Foundations does *not* follow the SMC
> calling conventions. It has nothing to do with PSCI neither and is only
> relevant to devices that use Trusted Foundations (like most Tegra-based
> retail devices).
> 
> Signed-off-by: Alexandre Courbot <acourbot@...dia.com>
> Reviewed-by: Tomasz Figa <t.figa@...sung.com>
> Reviewed-by: Stephen Warren <swarren@...dia.com>
> ---
> .../arm/firmware/tl,trusted-foundations.txt        | 20 ++++++
> .../devicetree/bindings/vendor-prefixes.txt        |  1 +
> arch/arm/Kconfig                                   |  2 +
> arch/arm/Makefile                                  |  1 +
> arch/arm/firmware/Kconfig                          | 28 ++++++++
> arch/arm/firmware/Makefile                         |  1 +
> arch/arm/firmware/trusted_foundations.c            | 79 ++++++++++++++++++++++
> arch/arm/include/asm/trusted_foundations.h         | 67 ++++++++++++++++++
> 8 files changed, 199 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/arm/firmware/tl,trusted-foundations.txt
> create mode 100644 arch/arm/firmware/Kconfig
> create mode 100644 arch/arm/firmware/Makefile
> create mode 100644 arch/arm/firmware/trusted_foundations.c
> create mode 100644 arch/arm/include/asm/trusted_foundations.h
> 
> diff --git a/Documentation/devicetree/bindings/arm/firmware/tl,trusted-foundations.txt b/Documentation/devicetree/bindings/arm/firmware/tl,trusted-foundations.txt
> new file mode 100644
> index 0000000..2ec75c9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/firmware/tl,trusted-foundations.txt
> @@ -0,0 +1,20 @@
> +Trusted Foundations
> +-------------------
> +
> +Boards that use the Trusted Foundations secure monitor can signal its
> +presence by declaring a node compatible with "tl,trusted-foundations"
> +under the /firmware/ node
> +
> +Required properties:
> +- compatible : "tl,trusted-foundations"
> +- version-major : major version number of Trusted Foundations firmware
> +- version-minor: minor version number of Trusted Foundations firmware

vendor prefix version.

> +
> +Example:
> +	firmware {
> +		trusted-foundations {
> +			compatible = "tl,trusted-foundations";
> +			version-major = <2>;
> +			version-minor = <8>;
> +		};
> +	};
> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
> index 2956800..a374eaa 100644
> --- a/Documentation/devicetree/bindings/vendor-prefixes.txt
> +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
> @@ -66,6 +66,7 @@ ste	ST-Ericsson
> stericsson	ST-Ericsson
> toumaz	Toumaz
> ti	Texas Instruments
> +tl	Trusted Logic

Should this be Trusted Logic Mobility (tlm)?


> toshiba	Toshiba Corporation
> v3	V3 Semiconductor
> via	VIA Technologies, Inc.

- k

-- 
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation

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