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Subsequently, x-boot loads the images of TF-A (BL31), OP-TEE (BL32), and U-Boot (BL33) from a storage device into DRAM. The CPU (core 0) then switches itself from 32-bit mode to 64-bit by triggering a software reset. It proceeds to awaken other cores (core 1, 2, 3) and transitions them to 64-bit mode. Finally, all cores execute TF-A.
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Features
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