61 lines
2.4 KiB
Markdown
61 lines
2.4 KiB
Markdown
Trusted Little Kernel (TLK) Dispatcher
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=======================================
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TLK dispatcher adds support for NVIDIA's Trusted Little Kernel (TLK) to work
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with the Trusted Firmware. TLK-D can be compiled by including it in the
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platform's makefile. TLK is primarily meant to work with Tegra SoCs, so until
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Trusted Firmware starts supporting Tegra, the dispatcher code can only be
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compiled for other platforms.
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In order to compile TLK-D, we need a BL32 image to be present. Since, TLKD
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just needs to compile, any BL32 image would do. To use TLK as the BL32, please
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refer to the "Build TLK" section.
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Once a BL32 is ready, TLKD can be included in the image using the following
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command:
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CROSS_COMPILE=<path_to_linaro_chain>/bin/aarch64-none-elf- make NEED_BL1=0
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NEED_BL2=0 BL32=<path_to_BL32_image> PLAT=<platform> SPD=tlkd all
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_
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Trusted Little Kernel (TLK)
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===========================
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TLK is a Trusted OS running as Secure EL1. It is a Free Open Source Software
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(FOSS) release of the NVIDIA® Trusted Little Kernel (TLK) technology, which
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extends technology made available with the development of the Little Kernel (LK).
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You can download the LK modular embedded preemptive kernel for use on ARM,
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x86, and AVR32 systems from https://github.com/travisg/lk
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NVIDIA implemented its Trusted Little Kernel (TLK) technology, designed as a
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free and open-source trusted execution environment (OTE).
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TLK features include:
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• Small, pre-emptive kernel
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• Supports multi-threading, IPCs, and thread scheduling
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• Added TrustZone features
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• Added Secure Storage
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• Under MIT/FreeBSD license
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NVIDIA extensions to Little Kernel (LK) include:
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• User mode
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• Address-space separation for TAs
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• TLK Client Application (CA) library
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• TLK TA library
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• Crypto library (encrypt/decrypt, key handling) via OpenSSL
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• Linux kernel driver
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• Cortex A9/A15 support
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• Power Management
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• TrustZone memory carve-out (reconfigurable)
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• Page table management
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• Debugging support over UART (USB planned)
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TLK is hosted by NVIDIA on http://nv-tegra.nvidia.com under the
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3rdparty/ote_partner/tlk.git repository. Detailed information about
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TLK and OTE can be found in the Tegra_BSP_for_Android_TLK_FOSS_Reference.pdf
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manual located under the "documentation" directory_.
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Build TLK
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=========
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To build and execute TLK, follow the instructions from "Building a TLK Device"
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section from Tegra_BSP_for_Android_TLK_FOSS_Reference.pdf manual.
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