Stack memory is pre-allocated. U-Boot must therefore know the
maximum number of CPUs that may be present.
+config SBI
+ bool
+ default y if RISCV_SMODE || SPL_RISCV_SMODE
+
config SBI_IPI
bool
+ depends on SBI
default y if RISCV_SMODE || SPL_RISCV_SMODE
depends on SMP