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42 lines
1.2 KiB
42 lines
1.2 KiB
4 months ago
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Qualcomm Technologies, Inc.
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===========================
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Trusted Firmware-A (TF-A) implements the EL3 firmware layer for QTI SC7180.
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Boot Trace
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-------------
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Bootrom --> BL1/BL2 --> BL31 --> BL33 --> Linux kernel
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BL1/2 and BL33 can currently be supplied from Coreboot + Depthcharge
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How to build
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------------
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Code Locations
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~~~~~~~~~~~~~~
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- Trusted Firmware-A:
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`link <https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git>`__
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Build Procedure
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~~~~~~~~~~~~~~~
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QTI SoC expects TF-A's BL31 to get integrated with other boot software
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Coreboot, so only bl31.elf need to get build from the TF-A repository.
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The build command looks like
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make CROSS_COMPILE=aarch64-linux-gnu- PLAT=sc7180 COREBOOT=1
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update value of CROSS_COMPILE argument with your cross-compilation toolchain.
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Additional QTISECLIB_PATH=<path to qtiseclib> can be added in build command.
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if QTISECLIB_PATH is not added in build command stub implementation of qtiseclib
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is picked. qtiseclib with stub implementation doesn't boot device. This was
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added to satisfy compilation.
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QTISELIB for SC7180 is available at
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`link <https://review.coreboot.org/cgit/qc_blobs.git/plain/sc7180/qtiseclib/libqtisec.a>`__
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