envctrl_read_cpu_info
if (0 < envctrl_read_cpu_info(whichcpu, cputemp,
ret = envctrl_read_cpu_info(read_cpu, pchild, ENVCTRL_CPUTEMP_MON, data);
ret = envctrl_read_cpu_info(read_cpu, pchild, ENVCTRL_CPUVOLTAGE_MON, data);