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Altera_Forum's avatar
Altera_Forum
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20 years ago

building custom uClinux on DE2

hello,

i downloaded the prebuild uclinux from nioswiki and that worked fine for me, but i need to put my own software there to be run and so i got to compile myself everything.

i can compile, but i cant make it boot http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/sad.gif

i then look the prebuilt for some clues, but as mine, it passes no kernel comand line, it detects no devices ...

where to boot from ? where is my / mounted ?

is there any need to populate /dev before generating image ( i sometimes think this is the problem, even though i dont know how and where to do this http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/sad.gif

if someone knows, http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/wink.gif

thanks in advance

matheus

2 Replies

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

    just to put more info

    Uncompressing Linux... Ok, booting the kernel.

    Linux version 2.6.16-uc0 (matheus@microbio) (gcc version 3.4.6)# 23 PREEMPT Mon Aug 7 15:11:38 BRT 2006

    uClinux/Nios II

    Altera Nios II support © 2004 Microtronix Datacom Ltd.

    Built 1 zonelists

    Kernel command line: root=/dev/sdram ro

    PID hash table entries: 64 (order: 6, 1024 bytes)

    Dentry cache hash table entries: 2048 (order: 1, 8192 bytes)

    Inode-cache hash table entries: 1024 (order: 0, 4096 bytes)

    Memory available: 6480k/8192k RAM, 0k/0k ROM (1435k kernel code, 182k data)

    Mount-cache hash table entries: 512

    NET: Registered protocol family 16

    io scheduler noop registered

    io scheduler deadline registered (default)

    Serial: JTAG UART driver $Revision: 1.4 $

    ttyJ0 at MMIO 0x81004000 (irq = 1) is a jtag_uart

    RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize

    loop: loaded (max 8 devices)

    NFTL driver: nftlcore.c $Revision: 1.98 $, nftlmount.c $Revision: 1.41 $

    INFTL: inftlcore.c $Revision: 1.19 $, inftlmount.c $Revision: 1.18 $

    No recognised DiskOnChip devices found

    slram: not enough parameters.

    blkmtd: version $Revision: 1.27 $

    blkmtd: error: missing `device&#39; name

    block2mtd: version $Revision: 1.30 $

    No valid DiskOnChip devices found

    NET: Registered protocol family 2

    IP route cache hash table entries: 128 (order: -3, 512 bytes)

    TCP established hash table entries: 512 (order: -1, 2048 bytes)

    TCP bind hash table entries: 512 (order: -1, 2048 bytes)

    TCP: Hash tables configured (established 512 bind 512)

    TCP reno registered

    TCP bic registered

    NET: Registered protocol family 1

    NET: Registered protocol family 17

    ***

    VFS: test name = </dev/root>

    VFS: fs_name = <ext2>

    VFS: fs_name = <romfs>

    VFS: tried fs_name = <ext2> err= -6

    VFS: Cannot open root device "sdram" or unknown-block(0,0)

    Please append a correct "root=" boot option

    Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

    i have romfs and ext2 support in kernel, and i did make romfs as said in the wiki ...

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

    Matheus,

    Are you using the NIOS IDE? If that&#39;s the case, you should create a File System Project in order to it work.

    I recommend you to follow all steps presented in nios2colinux (http://nioswiki.jot.com/wikihome/operatingsystems/nios2colinux). It worked fine for me. I had some problems myself using NIOS IDE, but everything worked with this tutorial. After that, I could make the NIOS IDE work, too.

    Good Luck

    Alair