implicit declaraton of function readl

Hi,

I had a working uclinux kernel that I tried to make run without the nios2terminal. I selected the " Bypass output when no connection " in menuconfig like shown below.

After doing this the make fails trying to resolve the readl function in altjuart.c

Has anyone else run into this same issue?

Thanks,

This is what I have my kernel config set as:

In kernel menuconfig, you should usually select either jtag uart or serial uart for console device (but not both).

You should use exactly only one of them for console.

Device Drivers ---> Character devices ---> Serial drivers --->

[ ] 8250/16550 and compatible serial support

*** Non-8250 serial port support ***

[*] Altera JTAG UART support

[*] Altera JTAG UART console support # if you use a USB (Blaster) cable on a nios2-terminal

[ ] Bypass output when no connection # go without a nios2-terminal

[*] Altera UART support

(4) Maximum number of Altera UART ports

(115200) Default baudrate for Altera UART ports

[ ] Altera UART console support # if you use a 9-pin RS-232C cable on a terminal emulator such as minicom or ckermit or hyperterminal

The jtag uart will freeze if there is no nios2-terminal connected. You can keep the system working without a jtag connection, by turn on

[*] Bypass output when no connection

The jtag uart will connect again when there is a nios2-terminal on jtag connection.

The init prog will start a shell on the console device. So if you want to run app which use uart, then you should not enable uart console.