SCU_INV_ALL_REG
bus_space_write_4(bst, bsh_scu, SCU_INV_ALL_REG, 0xff);
bus_space_write_4(bst, scu_bsh, SCU_INV_ALL_REG, 0xffff);
bus_space_write_4(bst, bsh, SCU_INV_ALL_REG, 0xff);
bus_space_write_4(bst, scu_bsh, SCU_INV_ALL_REG, 0xffff);
bus_space_write_4(bst, bsh, SCU_INV_ALL_REG, 0xffff);
ARMCORE_SCU_BASE + SCU_INV_ALL_REG, 0xffff);