On Fri, Sep 6, 2013 at 3:35 AM, Rob Herring <robherring2@xxxxxxxxx> wrote: > On 09/04/2013 10:27 PM, Alexandre Courbot wrote: >> Trusted Foundations is a TrustZone-based secure monitor for ARM that >> can be invoked using a consistent 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. >> >> Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxx> >> Reviewed-by: Tomasz Figa <t.figa@xxxxxxxxxxx> >> Reviewed-by: Stephen Warren <swarren@xxxxxxxxxx> >> --- >> .../arm/firmware/tl,trusted-foundations.txt | 17 +++++ >> .../devicetree/bindings/vendor-prefixes.txt | 1 + >> arch/arm/Kconfig | 2 + >> arch/arm/Makefile | 1 + >> arch/arm/firmware/Kconfig | 25 +++++++ >> arch/arm/firmware/Makefile | 1 + >> arch/arm/firmware/trusted_foundations.c | 82 ++++++++++++++++++++++ >> arch/arm/include/asm/trusted_foundations.h | 53 ++++++++++++++ >> 8 files changed, 182 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..3954bbd >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/arm/firmware/tl,trusted-foundations.txt >> @@ -0,0 +1,17 @@ >> +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 root 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 >> + >> +Example: >> + firmware { >> + compatible = "tl,trusted-foundations"; >> + version-major = <2>; >> + version-minor = <8>; >> + }; > > I'm wondering how we fit this in with PSCI bindings? Both are pieces of > firmware functionality and may co-exist. There's nothing incompatible > here, but there should be some commonality. Will future versions of > Trusted Foundations follow the SMC calling conventions doc? What about > armv8 support. I don't have any information about the future of TF unfortunately, excepted that it should remain backward-compatible. What is this SMC calling convention doc your are talking about btw? Is there a standard calling convention defined by ARM? Alex. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html