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92e02b01ec
Update the generic entry point code to support the ACPI parking protocol. The ACPI parking protocol can be used when PSCI is not available to bring up secondary CPU cores. When enabled secondary CPUs will enter U-Boot proper and spin in their own 4KiB reserved memory page, which also acts as mailbox with the OS to release the CPU. TEST: Boots all CPUs on qemu-system-aarch64 -machine raspi4b Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-by: Simon Glass <sjg@chromium.org>