I will do it as soon as I get all the necessary tools to turn on the Raspberry Pi 4b. I was thinking that L4 worked like the old project coLinux,where Linux ran as a list of processes under WIndows. In my sick mind I'd thought that L4 allows FreeBSD to run as a list of processes with the L4 microkernel itself on "top" of it. Do you know if something like this exists ?
On Sun, Feb 11, 2024 at 9:01 PM Mark Millard <mark...@yahoo.com> wrote: > [Only replying to what I've subscribed to --and I dropped > Warner as well.] > > On Feb 11, 2024, at 11:43, Mario Marietto <marietto2...@gmail.com> wrote: > > > ok. But what does this mean ? That I can use whatever Linux distro I > want ? Or even the FreeBSD world ? > > Only to build L4Re. > > The LR4e built will not contain any Linux userland materials, > nor any FreeBSD userland materials. LR4e has its own userland > materials that will be present instead. > > http://os.inf.tu-dresden.de/download/snapshots/pre-built-images/arm64/ > > already contains pre-built .elf and .uimage files Why not use one > of those on the RPi4B? > > By size (larger), the most complete ones for the RPi4B seem to be > (both formats): > > > http://os.inf.tu-dresden.de/download/snapshots/pre-built-images/arm64/bootstrap_vm-multi_rpi4.elf > > http://os.inf.tu-dresden.de/download/snapshots/pre-built-images/arm64/bootstrap_vm-multi_rpi4.uimage > > > http://os.inf.tu-dresden.de/download/snapshots/pre-built-images/arm64/bootstrap_vm-basic_rpi4.elf > > http://os.inf.tu-dresden.de/download/snapshots/pre-built-images/arm64/bootstrap_vm-basic_rpi4.uimage > > > > On Sun, Feb 11, 2024 at 7:59 PM Mark Millard <mark...@yahoo.com> wrote: > > > > > > On Feb 11, 2024, at 05:44, Mario Marietto <marietto2...@gmail.com> > wrote: > > > > > I'm trying to understand how to use the L4 Microkernel with a FreeBSD > userland. I've asked the same to a L4 developer,but he told me that he does > not know FreeBSD,so I'm here to ask the same question. First of all I'm > sure that it can be done,because it is written clearly on their website : > > > > > > > > > http://os.inf.tu-dresden.de/L4Re/download/snapshots/ > > > > > > > > > on the section : > > > Host system requirements > > > The host system shall be a 64bit-based system with a recent Linux > distribution installed and at least 2GB of free disk space. > > > All necessary tools required by the build are available from the > provided packages of the Linux distributions, including cross compilers. > But there are also other cross compiler packages available (see below). You > might want to run make check_build_tools in the src/l4 directory to verify > the common tools are installed. > > > You are free to use any Linux distribution you like, or even BSDs or > any of its derivatives. But then you should know the game. Especially tool > versions should be recent, as installed on the listed distributions below. > > > We are confident that the snapshot works on the following > distributions: > > > • Debian 11 or later > > > • Ubuntu 22.04 or later > > > > > > Let's say I want to use the L4 microkernel + FreeBSD 14 on my > Raspberry Pi 4,the first step I did was to build L4Re for the Rpi,according > with this instructions : > > > > > > > > > http://os.inf.tu-dresden.de/L4Re/rpi.html > > > > > > This is the log file of the compilation,that hasn't given any error : > > > > > > > > > https://pastebin.ubuntu.com/p/6SwN2mpJBM/ > > > > > > > > > Or I could have taken a pre built image of the L4 microkernel here : > > > > > > > > > http://os.inf.tu-dresden.de/download/snapshots/pre-built-images/arm64/ > > > > > > > > > > > > At this point the tutorial says that I should use a Linux distro. They > suggest the official distro for the Raspberry Pi 4,that's RaspBian. But I > don't want to use Linux as a userland,I want to use FreeBSD. The question > now is : what should I do to achieve that goal ? How can I link the L4 > microkernel with the ubldr bootloader of FreeBSD ? Or should I link it to > the kernel of FreeBSD ? Can someone explain to me the missing step ? thanks. > > > > QUOTING the "Configuring yourself" section: > > The make setup step configures predefined setups for both the L4Re > microkernel (Fiasco) and the L4Re user-level software, and connects both > together so the images for the target system can be built. > > END QUOTE > > > > So L4Re has its own user-level software, not just a kernel. There is no > use of a Linux or FreeBSD user-level software > > when L4Re is booted. (They are just used for building.) > > > > "The host system" is just a host for building the L4Re parts and > assembling the image from the parts. The "Pulling it together" section is > about combining the parts (including the microkernel and the user-level > software) to make the overall image that does not include Linux or FreeBSD > code. > > > === > Mark Millard > marklmi at yahoo.com > > -- Mario.
