RAMINDEX and the Cortex-A76 L1I Cache
Summary
An in-depth experimental post examining RAMINDEX on ARM Cortex-A76 cores, exploring how to read L1I cache data via the RAMINDEX interface using a Raspberry Pi 5. The author describes setting up a CMSIS-DAP/ debugger workflow, attempts to observe instruction encodings in L1I, and discusses potential pre-decoding or rearranged bitfields, plus methods to influence instruction fetch for testing.