Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

U-Boot to boot without any tty console [Nios II MMU]

I have a 3c120 board running linux with the help of http://www.rocketboards.org/foswiki/documentation/niosiilinuxusermanual#how_to_debug_kernel_47drivers_with_gdb

But what I see is that U-Boot does not boot until I connect via nios2-terminal, I can see there are several configurations and env I can set in U-Boot. But not clear what variable I can set / modify to boot U-Boot without any user interaction.

U-Boot config looks like this

/* added environment to ease user usage */

#define config_auto_complete

#define config_bootargs "console=ttyj0,115200"

#define config_extra_env_settings \

"fdtaddr=0xd5000000\0" \

"loadaddr=0xd6000000\0" \

"fdtimagesize=0x1000\0" \

"bootimagesize=0x200000\0" \

"cfifdtaddr=0xe0200000\0" \

"cfibootaddr=0xe0300000\0" \

"cfiroot=/dev/mtdblock0 rootfstype=jffs2 rw\0" \

"cfiload=cp.b ${cfifdtaddr} ${fdtaddr} ${fdtimagesize};" \

"cp.b ${cfibootaddr} ${loadaddr} ${bootimagesize}\0" \

"cfiboot=setenv bootargs " config_bootargs " root=${cfiroot};" \

"bootm ${loadaddr} - ${fdtaddr}\0" \

"nfsdhcpboot=setenv bootargs " config_bootargs " root=/dev/nfs " \

"rw nfsroot=${serverip}:${rootpath},tcp " \

"ip=dhcp;bootm ${loadaddr} - ${fdtaddr}\0" \

"nfsstaticboot=setenv bootargs " config_bootargs " root=/dev/nfs " \

"rw nfsroot=${serverip}:${rootpath},tcp " \

"ip=${ipaddr}:${serverip}:${gatewayip}:${netmask};" \

"bootm ${loadaddr} - ${fdtaddr}\0" \

"serverip=196.168.96.11\0" \

"rootpath=/home/nios2/nfs\0" \

"ipaddr=196.168.96.10\0" \

"gatewayip=196.168.96.254\0" \

"netmask=255.255.255.0\0" \

"ethaddr=22:33:44:55:66:77\0"

#define config_cmd_run

/* boot command will automatically executed */

#define config_bootcommand "run cfiload; run cfiboot"

/* delay before automatically booting the default image */

You can see there is boot arg defined as console=ttyj0,115200 .Is that where the magic happens why it waits for the nios2-terminal before it boots? Thanks!

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    12 years ago

    Hi

    --- Quote Start ---

    But what I see is that U-Boot does not boot until I connect via nios2-terminal, I can see there are several configurations and env I can set in U-Boot.

    --- Quote End ---

    Please confirm it as follows once.

    make menuconfig

    Kernel/Library/Defaults Selection ---> [*] Customize Kernel Settings <Exit>

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

    [*] Bypass output when no connection

    .config - Linux Kernel v2.6.30 Configuration

    &#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;

    &#9484;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472; Serial drivers &#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9488;

    &#9474; Arrow keys navigate the menu. <Enter> selects submenus --->. &#9474;

    &#9474; Highlighted letters are hotkeys. Pressing <Y> includes, <N> excludes, &#9474;

    &#9474; <M> modularizes features. Press <Esc><Esc> to exit, <?> for Help, </> &#9474;

    &#9474; for Search. Legend: [*] built-in [ ] excluded <M> module < > &#9474;

    &#9474; &#9484;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9488; &#9474;

    &#9474; &#9474; < > 8250/16550 and compatible serial support &#9474; &#9474;

    &#9474; &#9474; *** Non-8250 serial port support *** &#9474; &#9474;

    &#9474; &#9474; < > MAX3100 support &#9474; &#9474;

    &#9474; &#9474; [*] Altera JTAG UART support &#9474; &#9474;

    &#9474; &#9474; [*] Altera JTAG UART console support &#9474; &#9474;

    &#9474; &#9474; [ ] Bypass output when no connection &#9474; &#9474;

    &#9474; &#9474; [*] Altera UART support &#9474; &#9474;

    &#9474; &#9474; (4) Maximum number of Altera UART ports &#9474; &#9474;

    &#9474; &#9474; (115200) Default baudrate for Altera UART ports &#9474; &#9474;

    &#9474; &#9474; [ ] Altera UART console support &#9474; &#9474;

    &#9474; &#9492;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9496; &#9474;

    &#9500;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9508;

    &#9474; <Select> < Exit > < Help > &#9474;

    &#9492;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9472;&#9496;

    Did you select it?

    Kazu
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    12 years ago

    Thanks kazuyasu!

    I assume all these configs are done in Linux kernel, right? I dont think there is any configs I could do in U-Boot. All I could do there was "make <boardname>_config" and make.

    And in kernel settings, I couldnt find

    Kernel/Library/Defaults Selection --->[*] Customize Kernel Settings <Exit>

    But I could modify the rest of the settings regarding the "Bypass output when no connection" for the serial connection.