You are using PXE with legacy BIOS as you use pxelinux.0 . To configure PXE
with legacy BIOS follow these instruction
Note: PXE server IP = 192.168.1.2
Target IP = 192.168.1.1
On PXE server
1. make sure DHCP, NFS & TFTP services are up and running.
2. change the filename "pxelinux.0"; in /etc/dhcp/dhcpd.conf. Then
restart your DHCP service.
3. Put your kernel to /path/to/tftpboot/image/ and extract your rootfs to
/srv/rootfs/.
4. Create a file in /path/to/tftpboot/pxelinux.cfg/default. The content
should like this
include menu.cfg
default vesamenu.c32
prompt 0
timeout 5
label Manual Netboot genericx86-64
menu label Netboot genericx86-64
linux image/bzImage
append root=/dev/nfs rw nfsroot=192.168.1.2:/srv/rootfs,hard,tcp,intr ip=dhcp
if you want to use PXE with GRUB, bootx64.efi, you need to enable UEFI instead
of legacy BIOS in BIOS configuration. Follow these instruction.
on PXE server
1. make sure DHCP, NFS & TFTP services are up and running.
2. change the filename "bootx64.efi"; in /etc/dhcp/dhcpd.conf. Then
restart your DHCP service.
3. Put your kernel to /path/to/tftpboot/image/ and extract your rootfs to
/srv/rootfs/.
4. If you want to get into GRUB,
a. comment the commands from /path/to/tftpboot/grub/grub.cfg to avoid
grub automatically load the kernel from network.
b. On GRUB, press "TAB" key to list available command. Or you can try use
this command
i. net_bootp
ii. linux
(tftp,pxeserverip)/image/bzImage root=/dev/nfs rw
nfsroot=192.168.1.2:/srv/rootfs,hard,tcp,intr ip=dhcp
iii. boot
5. if you want boot automatically to NFS, create a file called grub.cfg
in /path/to/tftpboot/grub.cfg. your grub.cfg should look like this
Set timeout 5
menuentry " genericx86-64" {
linux image/bzImage root=/dev/nfs rw
nfsroot=192.168.1.2:/srv/rootfs,hard,tcp,intr ip=dhcp
initrd image/initrd
}
6. When your device boot, it will download bootx64.efi and the message
something like this
>>Start PXE over IPv4.
Station IP address is 192.168.1.1
Server IP address is 192.168.1.2
NBP filename is bootx64.efi
NBP filesize is 1137016 Bytes
Downloading NBP file...
NBP file downloaded successfully.
Please note that I did not use initramfs or initrd as my kernel already have
network module build-in. To build your kernel with network module, you need to
know which module need to build-in into your kernel. Simply boot your device
using *.hhdimg from USB stick. Then check loaded kernel module from your device.
$ lsmod
Find the module something with network. Yes it is a little bit tricky.
Build your kernel in host machine.
$ bitbake virtual/kernel -c menuconfig
A menu will popup and search your kernel module using key "/". Make sure symbol
module [*] indicate build-in.
$ bitbake virtual/kernel
You also can create a kernel bundle with initramfs. Read this
https://www.yoctoproject.org/docs/2.5/mega-manual/mega-manual.html#building-an-initramfs-image.
Maybe need to ask someone who are expert on kernel development on how to enable
build-in kernel module.
Regards,
Alim Hussin
From: Raymond Yeung [mailto:rksye...@hotmail.com]
Sent: Friday, April 27, 2018 1:12 AM
To: Hussin, Mohamad Noor Alim <mohamad.noor.alim.hus...@intel.com>;
yocto@yoctoproject.org
Subject: Re: PXE Boot NFS not working
Follow-up to my previous post, after seeing the reply below suggesting me not
to use initramfs (but initrd is usable, right?). BTW, I don't use bootx64.efi.
Instead, I use pxelinux.0 along with the other lib***.c32 files.
1. Is there a way to verify if GRUB (that I'm using) supports networking or
not? It seems to have very limited user commands available.
2. How do I get into GRUB? I'd been into GRUB, more like accidentally. The
reply below refers to grub.cfg. Is this cfg file stored on target, or on host
(like pxelinux.cfg)?
3. How do I configure my build (and what yocto tool to use, if any) in order
to get my network driver part of kernel, instead of being a LKM that isn't
there when I need it for NFS boot?
________________________________
From: Hussin, Mohamad Noor Alim
<mohamad.noor.alim.hus...@intel.com<mailto:mohamad.noor.alim.hus...@intel.com>>
Sent: Thursday, April 26, 2018 12:26 AM
To: Raymond Yeung; yocto@yoctoproject.org<mailto:yocto@yoctoproject.org>
Subject: RE: PXE Boot NFS not working
Refer to my post here
https://lists.yoctoproject.org/pipermail/yocto/2018-April/040860.html
Don't use initramfs/initrd as it not working.
Regards,
Alim Hussin
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