1TARGET_ARCH=riscv32 2TARGET_BASE_ARCH=riscv 3TARGET_SUPPORTS_MTTCG=y 4TARGET_XML_FILES= gdb-xml/riscv-32bit-cpu.xml gdb-xml/riscv-32bit-fpu.xml gdb-xml/riscv-64bit-fpu.xml gdb-xml/riscv-32bit-virtual.xml 5# needed by boot.c 6TARGET_NEED_FDT=y 7TARGET_LONG_BITS=32 8