打印出u-boot的启动信息:
复制代码
U-Boot 2015.07-rc3-00092-gf3edfd3-dirty (Dec 05 2015 - 22:00:46 -0800)
DRAM: 512 MiB
WARNING: Caches not enabled
Flash: 128 MiB
MMC: MMC: 0
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
Net: smc911x-0
Warning: smc911x-0 using MAC address from net device
Hit any key to stop autoboot: 0