Jetson Nano Serial-Number修改
2021-07-24
admin
Serial Number 获取 (默认为13位十进制数）
sudo lshw | grep serial 或 sudo cat /sys/firmware/devicetree/base/serial-number 1423219012968
Jetson Serial Number 存储在核心板的EEPROM中
Jetson Module EEPROM Layout
Jetson Nano EEPROM --- I2C总线2，设备地址0x50
nvidia@nano:~$ sudo i2cdump -f -y 2 0x50 No size specified (using byte-data access) 0123456789abcdef0123456789abcdef00: 01 00 fc 00 78 0d 02 00 04 46 00 00 00 00 00 00?.?.x??.?F...... 10: 00 00 00 00 36 39 39 2d 31 33 34 34 38 2d 30 30....699-13448-00 20: 30 32 2d 34 30 30 20 46 2e 30 00 00 00 00 00 0002-400 F.0...... 30: 00 00 ff ff ff ff ff ff ff ff ff ff ff ff ff ff................ 40: ff ff ff ff 14 f1 e9 4b 04 00 31 34 32 33 32 31....???K?.142321 50: 39 30 31 32 39 36 38 00 00 00 00 00 00 00 00 009012968......... 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00................ 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00................ 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00................ 90: 00 00 00 00 00 00 4e 56 43 42 1c 00 4d 31 00 00......NVCB?.M1.. a0: ff ff ff ff ff ff ff ff ff ff ff ff 14 f1 e9 4b............???K b0: 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00?............... c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00................ d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00................ e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00................ f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 b2...............?
手动修改，必须重新计算CRC8并写入到EEPROM 0xFF地址，否则无法开机也无法再次烧录核心板
将0x31[0x4a地址] 改为 0x54
sudo i2cset -f -y 2 0x50 0x4a 0x54
同时修改0xb2[0xff地址] 改为 0xd8 即前254字节的CRC-8 结果
255CRC-8 computed for bytes 0–254.
作者：秦风_无衣
链接：https://www.jianshu.com/p/b1c3cd7b2906
来源：简书
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