In this device, the C7x boots from
system memory instead of booting from ROM. A 1KB boot RAM (PSRAM1KECC) is used to
store boot vectors for the C7x CPU.
Note: By default, the C7x
CPU boots in C7x ISA mode but if riscv_mode bit is set in the corepac cfg
regiseter, then CPU boots in RISVC ISA mode