-Trusted Firmware-A for QEMU SBSA target
-========================================
-
-Trusted Firmware-A (TF-A) implements the EL3 firmware layer for QEMU SBSA
-Armv8-A. While running Qemu from command line, we need to supply two Flash
-images. First Secure BootRom is supplied by -pflash argument. This Flash image
-is made by EDK2 build system by composing BL1 and FIP. Second parameter for Qemu
-is responsible for Non-secure rom which also given with -pflash argument and
-contains of UEFI and EFI variables (also made by EDK2 build system). Semihosting
-is not used
-
-When QEMU starts all CPUs are released simultaneously, BL1 selects a
-primary CPU to handle the boot and the secondaries are placed in a polling
-loop to be released by normal world via PSCI.
-
-BL2 edits the FDT, generated by QEMU at run-time to add a node describing PSCI
-and also enable methods for the CPUs.
-
-Current limitations:
-
-- Only cold boot is supported
-- No instructions for how to load a BL32 (Secure Payload)
-
-To build TF-A:
-
-::
-
- git clone https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git tfa
- cd tfa
- export CROSS_COMPILE=aarch64-linux-gnu-
- make PLAT=qemu_sbsa all fip
-
-Images will be placed at build/qemu_sbsa/release (bl1.bin and fip.bin).
-Need to copy them into top directory for EDK2 compilation.
-
-::
-
- cp build/qemu_sbsa/release/bl1.bin ../
- cp build/qemu_sbsa/release/fip.bin ../
-
-Those images cannot be used by itself (no semihosing support). Flash images are built by
-EDK2 build system, refer to edk2-platform repo for full build instructions.
-
-::
-
- git clone https://github.com/tianocore/edk2-platforms.git
- Platform/Qemu/SbsaQemu/Readme.md
-