util_libs
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Add pine64 star64 platform
This adds a timer and serial driver to libplatsupport. Co-developed with @Ivan-Velickovic.
Purpose: Ready to merge. Context: Needed to allow sel4test to run on star64. Testing performed: Tested with WIP sel4test for the star64 platform on pinetab-v hardware.
It should be noted that due to there being no current documentation on the JH7110 timer, details such as the register map are taken from the JH7110 timer Linux kernel patch which can be found here: https://patchwork.kernel.org/project/linux-riscv/patch/[email protected]/.
It looks good, could you squash the commits?