GKDmini
從MicroSD提取uImage
步驟如下：
$ sudo dd if=/dev/sdX of=gkdmini_microsd.bin bs=1M count=20 $ od -A d -t x1 gkdmini_microsd.bin | grep '1f 8b 08' 3145792 1f 8b 08 00 00 00 00 00 02 03 ec bd 0f 78 5c 47 7340096 1f 8b 08 00 00 00 00 00 02 03 ec bd 0f 74 1c d5 $ dd if=gkdmini_microsd.bin of=uImage bs=1 skip=3145728 $ file uImage uImage: u-boot legacy uImage, Linux-3.10.14, Linux/MIPS, OS Kernel Image (gzip), 4050288 bytes, Sat Jan 30 11:05:26 2021, Load Address: 0x80010000, Entry Point: 0x80444010, Header CRC: 0x3C36ED42, Data CRC: 0xE42C30E6 $ dd if=gkdmini_microsd.bin of=uImage_no_header bs=1 skip=3145792 $ file uImage_no_header uImage_no_header: gzip compressed data, max compression, from Unix, original size 0 $ zcat uImage_no_header > kernel $ strings kernel | grep Linux Linux version 3.10.14 (root@avrman-virtual-machine) (gcc version 5.2.0 (Ingenic r3.2.0-gcc520 2017.08-24) ) #10 PREEMPT Sat Jan 30 06:05:22 EST 2021 No init found. Try passing init= option to kernel. See Linux Documentation/init.txt for guidance. Linux [%s] Warning! Received an indication that the LUN assignments on this target have changed. The Linux SCSI layer does not automatically remap LUN assignments. Warning! Received an indication that the LUN assignments on this target have changed. The Linux SCSI layer does not automatically remap LUN assignments. [%s] Warning! Received an indication that the operating parameters on this target have changed. The Linux SCSI layer does not automatically adjust these parameters. Warning! Received an indication that the operating parameters on this target have changed. The Linux SCSI layer does not automatically adjust these parameters. 6Advanced Linux Sound Architecture Driver Initialized. Advanced Linux Sound Architecture Driver Version k%s. Linux