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diff --git a/docs/plat/qti.rst b/docs/plat/qti.rst new file mode 100644 index 0000000..1d483e7 --- /dev/null +++ b/docs/plat/qti.rst @@ -0,0 +1,43 @@ +Qualcomm Technologies, Inc. +=========================== + +Trusted Firmware-A (TF-A) implements the EL3 firmware layer for QTI SC7180, +SC7280. + +Boot Trace +------------- + +Bootrom --> BL1/BL2 --> BL31 --> BL33 --> Linux kernel + +BL1/2 and BL33 can currently be supplied from Coreboot + Depthcharge + +How to build +------------ + +Code Locations +~~~~~~~~~~~~~~ + +- Trusted Firmware-A: + `link <https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git>`__ + +Build Procedure +~~~~~~~~~~~~~~~ + +QTI SoC expects TF-A's BL31 to get integrated with other boot software +Coreboot, so only bl31.elf need to get build from the TF-A repository. + +The build command looks like + + make CROSS_COMPILE=aarch64-linux-gnu- PLAT=sc7180 COREBOOT=1 + +update value of CROSS_COMPILE argument with your cross-compilation toolchain. + +Additional QTISECLIB_PATH=<path to qtiseclib> can be added in build command. +if QTISECLIB_PATH is not added in build command stub implementation of qtiseclib +is picked. qtiseclib with stub implementation doesn't boot device. This was +added to satisfy compilation. + +QTISELIB for SC7180 is available at +`link <https://github.com/coreboot/qc_blobs/blob/master/sc7180/qtiseclib/libqtisec.a?raw=true>`__ +QTISELIB for SC7280 is available at +`link <https://github.com/coreboot/qc_blobs/blob/master/sc7280/qtiseclib/libqtisec.a?raw=true>`__ |