for debug uart was used as i2c funtion, and i need to configure application uart0 as a console,i do this as the steps listed below
boot from sdcard
1.run ./ltib -m config, change default kernel command line from "noinitrd console=ttyAM0" to "noinitrd console=ttySP0"
2.change inittab startup line from "::respawn:/sbin/getty -L ttyAM0" to "::respawn:/sbin/getty -L ttySP0"
3.enter kernel menuconfig, and enable "support for console on i.MXS application serial port"
4.run ./ltib -p boot_stream.spec -f and ./mk_mx_sdcard
5.then insert sdcard ,and power on. it stop after "booting the kernel"
PowerPrep start initialize power...
Battery Voltage = 4.20V
boot from battery. 5v input not detected
Dec 20 201220:33:03
FRAC 0x92925A52
Wait for ddr ready 1power 0x00820616
Frac 0x92925A52
start change cpu freq
hbus 0x00000003
cpu 0x00010001
start test memory accress
ddr2 0x40000000
finish simple test
Uncompressing kernel................................................................done,booting the kernel
Solved! Go to Solution.
thanks for your reply.this problem had been resolved.
app uart 0 was not initialized before used as a console.
The next thing being printed from console should be "Linux version 2.6.35...", did you see it from the debug uart (instead of application uart)?
thanks for your reply.this problem had been resolved.
app uart 0 was not initialized before used as a console.