1*4882a593SmuzhiyunBR2_riscv=y 2*4882a593SmuzhiyunBR2_RISCV_ABI_LP64=y 3*4882a593SmuzhiyunBR2_TOOLCHAIN_EXTERNAL=y 4*4882a593SmuzhiyunBR2_TOOLCHAIN_EXTERNAL_BOOTLIN_RISCV64_MUSL_BLEEDING_EDGE=y 5