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2c792cb780
This patch adds support for Armv8-R AArch64. Armv8-R AArch64 has no EL3, so we don't set vbar_el3, and adjust the code to set up the MPU for Armv8-R. So build a different flavour of the startup code to support that. We also add a specs file that uses this alternative startup code which can be used with Armv8-R AArch64 models.