how to print debug messages of uboot

[srinivas_123]

@Dhruvit

i have myhello.c file 

in this myhello.c content is like

int main()

{

  if(i2c_read()==true)

{

     debug(" read success\n");

}

}

this i2c_read function is called at the start of uboot , before DRAM initialization, I want to print the debug message on the console at the time of booting.

is anyone know how to do it please help me

Thanks&Regads

srinivas

[pengyong_zhang]

Hi, @srinivas_123 

You can refre from the below link:

https://wiki.st.com/stm32mpu/index.php?title=U-Boot_-_How_to_debug&oldid=81073

[pengyong_zhang]

Hi， @srinivas_123 

try using printk(); function

B.R

[srinivas_123]

There are debug messages present in uboot receipe  how can i change debug to printk. 

because every time it is overriden by default files right. is there any other option to print or enable to display debug messages at the time of booting

B.R