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57 lines
1.8 KiB
57 lines
1.8 KiB
7 months ago
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QEMU SBSA Target
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================
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Trusted Firmware-A (TF-A) implements the EL3 firmware layer for QEMU SBSA
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Armv8-A. While running Qemu from command line, we need to supply two Flash
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images. First Secure BootRom is supplied by -pflash argument. This Flash image
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is made by EDK2 build system by composing BL1 and FIP. Second parameter for Qemu
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is responsible for Non-secure rom which also given with -pflash argument and
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contains of UEFI and EFI variables (also made by EDK2 build system). Semihosting
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is not used
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When QEMU starts all CPUs are released simultaneously, BL1 selects a
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primary CPU to handle the boot and the secondaries are placed in a polling
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loop to be released by normal world via PSCI.
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BL2 edits the FDT, generated by QEMU at run-time to add a node describing PSCI
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and also enable methods for the CPUs.
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Current limitations:
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- Only cold boot is supported
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To build TF-A:
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::
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git clone https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git tfa
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cd tfa
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export CROSS_COMPILE=aarch64-none-elf-
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make PLAT=qemu_sbsa all fip
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To build TF-A with BL32 and SPM enabled(StandaloneMM as a Secure Payload):
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::
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git clone https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git tfa
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cd tfa
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export CROSS_COMPILE=aarch64-none-elf-
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make PLAT=qemu_sbsa BL32=../STANDALONE_MM.fd SPM_MM=1 EL3_EXCEPTION_HANDLING=1 all fip
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Images will be placed at build/qemu_sbsa/release (bl1.bin and fip.bin).
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Need to copy them into top directory for EDK2 compilation.
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::
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cp build/qemu_sbsa/release/bl1.bin ../
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cp build/qemu_sbsa/release/fip.bin ../
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Those images cannot be used by itself (no semihosing support). Flash images are built by
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EDK2 build system, refer to edk2-platform repo for full build instructions.
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::
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git clone https://github.com/tianocore/edk2-platforms.git
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Platform/Qemu/SbsaQemu/Readme.md
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