gxm_q201_v1#store dtb read $dtb_mem_addr
[store]To run cmd[emmc dtb_read 0x1000000 0x40000]
dtb_read_shortcut()-975: short cut in...
      Amlogic multi-dtb tool
      Multi dtb detected
      Multi dtb tool version: v2 .
      Support 3 dtbs.
        aml_dt soc: gxm platform: q201 variant: 3g
        dtb 0 soc: gxm   plat: q201   vari: 1g
        dtb 1 soc: gxm   plat: q201   vari: 2g
        dtb 2 soc: gxm   plat: q201   vari: 3g
      Find match dtb: 2
gxm_q201_v1#fdt addr $dtb_mem_addr
gxm_q201_v1#fdt resize
gxm_q201_v1#fdt print /memory@00000000
memory@00000000 {
        device_type = "memory";
        linux,usable-memory = <0x00000000 0x00100000 0x00000000 0x7ff00000>;
};