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Warning Unable To Open An Initial Console. Initramfs

In addition, the presence of the corresponding kernel modules will be required in the initramfs. Browse other questions tagged linux linux-kernel or ask your own question. Note that registered members see fewer ads, and ContentLink is completely disabled once you log in. What does the linux,stdout-path property in /chosen look like after U-Boot has modified the device tree? click site

OKWARNING: could not find compatible node fsl-usb2-dr: FDT_ERR_NOTFOUND.## Transferring control to Linux (at address 00000000) ... As the name implies, it's supposed to be a path, not a compatible string.That newcon stuff looks like you're overwriting the proper serial driver's methods to point at udbg's methods, in Also note that for embedded initramfs configurations, it may be advisable to first delete usr/initramfs_data.cpio after making changes to CONFIG_INITRAMFS_SOURCE and before re-running make. My uboot environment variables are:baudrate=115200bootargs=console=ttyCPM0,115200 root=/dev/ram rw init=/linuxrcbootcmd=bootm 2000000 10000000 3000000bootdelay=10bootfile=uImageconsoledev=ttyCPM0eth1addr=00:50:2b:4c:ab:55eth2addr=00:50:2b:4c:ab:56ethact=eTSEC2ethaddr=00:50:2b:4c:ab:54ethprime=eTSEC2fileaddr=3000000filesize=3a25ipaddr= size: 382/8188 bytesand console output is:=> bootWARNING: adjusting available memory to 30000000## Booting kernel from Legacy Image at 02000000 ...

Also, when I supply the kernel that was compiled with the embedded initramfs with an external one, the warning appears, even though the external should overwrite the embedded (kernel.org/doc/Documentation/filesystems/…). Terms Privacy Opt Out Choices Advertise Get latest updates about Open Source Projects, Conferences and News. Succeeded mounting /dev/sda2 INIT: version 2.88 booting Starting logging: OK Starting rsyslog daemon: OK Starting portmap: done (...) Starting atd: OK INIT: Entering runlevel: 1 Welcome to Buildroot buildroot login: root Total vram 1572864 planes 1 [ 86.578857] omapfb: Pixclock 48000 kHz hfreq 44.7 kHz vfreq 57.7 Hz [ 86.599395] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 86.621612] serial8250.0: ttyS0

Screenshot instructions: Windows Mac Red Hat Linux Ubuntu Click URL instructions: Right-click on ad, choose "Copy Link", then paste here → (This may not be possible with some types of Various people suggested running this, which looked promising: mknod -m 600 dev/console c 5 1 mknod -m 666 dev/null c 1 3 mknod -m 666 dev/zero c 1 5 I have Therefore, the console device must be in the initramfs filesystem directly, and we cannot rely on the devtmpfs mount to create that. Could anyone give me some pointers as to what I may have incorrect?

Note that for a truly versatile initramfs, logic to find/detect the final root filesystem and its filesystem type, provisions to allow specifying a root filesystem partition via UUID or partition LABEL, In my opinionen the error message just states this.... Unfortunately, the problem is that in this case, the init process runs without any 0, 1 and 2 file descriptors, so none of the messages/errors printed by the various initialization scripts Building a custom initramfs A custom and usable initramfs is a complete self-contained root filesystem for Linux.

Not the answer you're looking for? so I believe the filesystem/libraries are sane. The first two methods described below will require superuser priviledges in some of the steps. The Baum-Sweet Sequence How much effort (and why) should consumers put into protecting their credit card numbers?

OK Loading Device Tree to 03ff9000, end 03fff62b ... Method 2: Supplying a directory of files for embedded archive build $ cd $WORKDIR $ sudo rm -r $INITRAMFSTMP/* $ cd $INITRAMFSTMP $ sudo sh -c "cat ${LINUXDIR}/usr/initramfs_data.cpio | cpio -idv" External Initramfs Embedded initramfs External initramfs Building initramfs Helloworld Example External initramfs test Embedded initramfs test Method 1: Embedding an existing cpio.gz archive Method 2: Supplying a directory of files for why do they give the same output?

Also, according to uboot fdt command, the device tree has been modified with the following information:[email protected] { cell-index = <0x00000000>; device_type = "serial"; compatible = "fsl,ns16550", "ns16550"; reg = <0x00004500 0x00000100>; get redirected here But depends on how you boot the kernel. They have been tested on Ubuntu 12.04 and 13.04: $ WORKDIR=$PWD $ cp -a /etc/initramfs-tools initramfs-tools-nfs ## edit 'initramfs-tools-nfs/initramfs.conf' such that $ cat initramfs-tools-nfs/initramfs.conf MODULES=netboot BUSYBOX=y COMPCACHE_SIZE="" COMPRESS=gzip BOOT=nfs DEVICE= NFSROOT=auto more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed

If, on the other hand, an existing gzip'd cpio archive is specified against CONFIG_INITRAMFS_SOURCE, then the user will require external cpio utilities to build the archive. Check the root option of the kernel boot line. Some embedded system configurations even use an initramfs as the final, memory resident root filesytem. navigate to this website At this time, the only progress I had is that I managed to remove the "unable to open an initial console." warning.

Reply Cancel Cancel Reply Suggest as Answer Use rich formatting TI E2E™ Community Support Forums Blogs Videos Groups Site Support & Feedback Settings TI E2E™ Community Groups TI University Program Make External initramfs An external initramfs is a separate compressed cpio archive that is not linked into the kernel image. The kernel then expands and extracts a compressed cpio archive into it.

Firmware bus number: 0->0PCI host bridge /[email protected] ranges: MEM 0x00000000a0000000..0x00000000bfffffff -> 0x00000000a0000000 IO 0x00000000ffc10000..0x00000000ffc1ffff -> 0x0000000000000000/[email protected]: PCICSRBAR @ 0xfff00000Found FSL PCI host bridge at 0x00000000ff70a000.

OK Loading Ramdisk to 2fc21000, end 2fffff41 ... All rights reserved. © 2016 Jive Software | Powered by Jive SoftwareHome | Top of page | HelpJive Software Version: 2016.3.4.0, revision: 20161130091729.efc1903.release_2016.3.4 more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed I added "rdinit=/sbin/init" to the bootargs and this fixed the issue.

Thanks, Alister Re: [coLinux-users] Warning: unable to open an initial console. Valid archive formats for initramfs include newc and crc. View solution in original post Message 3 of 3 (7,094 Views) Reply 0 Kudos All Replies linnj Voyager Posts: 1,533 Registered: ‎09-10-2008 Re: Boot halts at "Warning: unable to open an my review here A thing that I noticed after rereading your original post: Code: [ 87.318389] drivers/rtc/hctosys.c: unable to open rtc device (rtc0) It's the fifth line from bottom up.

Consult this link for more usage examples and a description of available keywords. Our initrd does this also for you. > Oh, sorry, have not seen your mail completely. :-( You had that checked alright. This ultimately had to do with how the ram disk was initialized. This option can point to an existing gzip'd cpio archive, a directory containing files to be archived, or a configuration (text) file specification.

The kernel image and the initramfs archive are loaded separately into memory by a bootloader. Is there something that makes an initrd to work only with a specific kenrel/target? I found that contrary to the specification, this is indeed not empty, but contains a dev folder, a root folder and the /dev/console device.