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Warning Unable To Open An Initial Console. Mdev

Also check out initramfs-tools(8) for an introduction to writing scripts for mkinitramfs(8). Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] On 27/03/15 05:14, Steve Kenton wrote: > On 03/26/2015 02:51 PM, Rob Landley wrote: >> On If so, rebuilding your nfsroot with an old compiler could work for the old kernel. Apr 17, 2007 - 09:09 AM 12345Total votes: 0 I think I drunk too much coffee. click site

When the NFS server tells "insecure" in this context it practically means "I'm not sure that the request comes from someone who has root access to their machine" because even non-root You can also run QEMU with its -s option and then connecting with arm gdb to port 1234 and vmlinux as debugging file to check where the execution stopped. Raz When I execute the last qemu command I get some message like the following when the kernel boots up and the execution stalls there… Freeing init memory: 112K rcS: applet not Which ever the case, the kernel attempts to execute /init from rootfs.

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 I could not open the initial console. All works now.

Freeing init memory: 104k Warning: unable to open an initial console What is worse for me is that it freezes after that. I will post the answer in case anyone else has this issue. Try passing init= option to kernel. Any insights would be appreciated.

the need for superuser priviledges in some of the steps. Put another way, using initramfs just means supplying the kernel with an /init program in a cpio archive. All postings and use of the content on this site are subject to the Terms and Conditions of Use of the site. The details of the default connection can be found in the documentation; briefly, a virtual LAN is created where the guest virtual system is given address while the host workstation

This can cause problems when a > program (e.g ldso with early debugging enabled) opens a standard file > descriptor for read/write before these descriptors are actually created by > the You seem to have CSS turned off. Dan Balau 2011/07/17 I suspect there could be something wrong in the "/etc/init.d/rcS" file or "/etc/inittab" files. It seems I have everything in place: the nfs server is running (and the export is working - checked with mount on localhost).

i2c /dev entries driver at91_i2c at91_i2c: AT91 i2c bus driver. I have busybox compiled and I linked /linuxrc to /bin/busybox. These include issues such as mounting the final root filesystems which may be encrypted, across a network network (e.g. Any idea!

I did encounter a problem, though. get redirected here Valid values for type are virtio, i82551, i82557b, i82559er, ne2k_pci, ne2k_isa, pcnet, rtl8139, e1000, smc91c111, lance and mcf_fec. However: > > - this is also true for mdev/udev; > - it is only relevant in a cpio/initramfs rootfs; > - it's cleaner to use the device table. > > Please help or send rogaine (r).

But for the purpose of the contents of the rootfs, that doesn't make a difference. Copy the _install directory that is generated with Busybox build into the NFS share, in order to have the /srv/nfs/_install folder containing the roof filesystem. Next message: [Buildroot] Where is /dev/console created when using devtmpfs? navigate to this website if [ "${mountstatus}" = "0" ]; then echo "Succeeded mounting ${root}" else echo "Failed to mount ${root}" return fi if [[ -x "${rootmnt}/${init}" ]]; then umount /sys /proc exec switch_root ${rootmnt}

That's why buildroot adds it explicitly in fs/cpio/cpio.mk: PACKAGES_PERMISSIONS_TABLE += /dev/console c 622 0 0 5 1 - - -$(sep) >> >> And then init/main.c does: >> >> /* Open the Jetzt neu: Arcor- Online Butler 5.0 als kostenfreier Download! However, with the embedded configurations, inclusion of device file, /dev/console, was also necessary in order to provide a system console.

Executing the folowing commands from within the /dev directory of initramfs on the kernel build machine will generate the required device nodes: mknod -m 622 console c 5 1 mknod -m

I noticed that the kernel is not executing the /etc/init.d/rcS file in Qemu 0.12.3. If I don't include this option the mounting does not succeed, and by looking at the system log I see that the NFS server complains that using a high port is You probably need '/dev' to exist for udev to do its stuff, but I'm not sure yet. Easiest way to do all this is make install DESTDIR=/path/to/sd/card in your busybox drectory.


Total pages: 8128 Kernel command line: mem=32M console=ttyS0,115200 initrd=0x20410000,5242880 root =/dev/ram0 rw AT91: 128 gpio irqs in 4 banks PID hash table entries: 128 (order: 7, 512 bytes) Console: colour dummy Pleas ehelp. asked 4 years ago viewed 8227 times active 4 years ago Blog Stack Overflow Gives Back 2016 Linked 2 Booting linux kernel using a simple char driver as console? my review here Top jramak Post subject: Posted: Mon May 21, 2007 9:02 pm Joined: Fri Feb 02, 2007 9:33 pmPosts: 16 yes, that's the most common issue, if a console

Related Tagged: ARM, debian, embedded, kernel, linux, nfs, qemu, ubuntu Posted in: Embedded ← Booting Linux with U-Boot on QEMUARM qemu-system-arm segmentation fault in UbuntuLucid → 46 Responses "Linux NFS Root This means your directory "/dev" is empty. 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, Create a free website or blog at WordPress.com.

Futher Reading This link covers several issues involved in building a custom and usable initramfs. Use -net nic,model=? Next message: [Buildroot] Where is /dev/console created when using devtmpfs? Qemu can emulate several different models of network card.

Proceeding: $ cd $LINUXDIR ### run "make menuconfig" and set "CONFIG_INITRAMFS_SOURCE" such that $ cat .config | grep CONFIG_INITRAMFS_SOURCE CONFIG_INITRAMFS_SOURCE="${INITRAMFSTMP}/initramfs_config.txt" $ make (...) CHK include/generated/compile.h GEN usr/initramfs_data.cpio AS usr/initramfs_data.o LD usr/built-in.o Recall that kernel image still contains the default skeleton initramfs embedded in it. Or you could try this to try and debug some more. Dung 2014/04/18 I am using qemu to simulate the target: realview-pbx-a9. Try also to add the line "#!/bin/sh" at the beginning of rcS. Chai 2011/03/10 Hi Balau, Your tutorials are very intriguing .

Notify me of new posts via email. Externally i.e. Patch hide | download patch | download mbox diff --git a/fs/common.mk b/fs/common.mk index debf7db..d7383d1 100644 --- a/fs/common.mk +++ b/fs/common.mk @@ -55,6 +55,12 @@ endif echo "$(HOST_DIR)/usr/bin/makedevs -d $(FULL_DEVICE_TABLE) $(TARGET_DIR)" >> $(FAKEROOT_SCRIPT) The development platform used was Ubuntu 12.04 AMD64.

Tags: linux Intramfs Format Expand and Extract Archive and Compress Initramfs Mechanism /init switch_root Embedded vs.