1. 1240cd6 riscv: Rename cpu/qemu to cpu/generic by Anup Patel · Mon Feb 25 08:14:10 2019 +0000[Renamed from arch/riscv/cpu/qemu/dram.c]
  2. 8a8694d riscv: Add QEMU virt board support by Bin Meng · Wed Sep 26 06:55:21 2018 -0700