During power, It shows below message from Console.
It does NOT boot up the kernel, and likely even not the uboot (?).
rock@sg-rock-415d:~$
/*** I did a hard power cycle here ***/
G12A:BL:0253b8:61aa2d;FEAT:E0F83180:2000;POC:F;RCY:0;EMMC:0;READ:800;READ:800;READ:800;SD?:20000;USB:8;LOOP:1;EMMC:0;READ:800;READ:800;READ:800;SD?:20000;USB:8;LOOP:2;EMMC:0;READ:800;READ:800;READ:800;SD?:20000;USB:8;LOOP:3;EMMC:0;READ:800;READ:800;READ:800;SD?:20000;USB:8;LOOP:4;EMMC:0;READ:800;READ:800;READ:800;SD?:20000;USB:8;LOOP:5;EMMC:0;READ:800;READ:800;READ:800;SD?:20000;USB:8;LOOP:6;EMMC:0;READ:800;READ:800;READ:800;SD?:20000;USB:8;LOOP:7;EMMC:0;READ:800;READ:800;READ:800;SD?:20000;USB:8;LOOP:8;EMMC:0;READ:800;READ:800;READ:800;SD?:20000;USB:8;LOOP:9;EMMC:0;READ:800;READ:800;READ:800;SD?:20000;USB:8;G12A:BL:0253b8:61aa2d;FEAT:E0F83180:2000;POC:F;RCY:0;EMMC:0;READ:800;READ:800;READ:800;SD?:20000;USB:8;LOOP:1;EMMC:0;READ:800;READ:800;READ:800;SD?:20000;USB:8;LOOP:2;EMMC:0;READ:800;READ:800;READ:800;SD?:20000;USB:8;